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Journal articles on the topic 'Polypropylene Composites'

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1

Panumati, S., T. Amornsakchai, and C. Ramesh. "F-9 HIGH STRENGTH POLYPROPYLENE FIBER FROM POLYPROPYLENE/CLAY COMPOSITE(Session: Composites II)." Proceedings of the Asian Symposium on Materials and Processing 2006 (2006): 124. http://dx.doi.org/10.1299/jsmeasmp.2006.124.

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2

Jang, Myung Geun, Choonglai Cho, and Woo Nyon Kim. "Synergistic effects of hybrid conductive fillers on the electrical properties of carbon fiber pultruded polypropylene/polycarbonate composites prepared by injection molding." Journal of Composite Materials 51, no. 7 (2016): 1005–17. http://dx.doi.org/10.1177/0021998316658536.

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In this study, the effects of filler characteristics and composite preparation methods on the morphology, mechanical property, electrical conductivity, and electromagnetic interference shielding effectiveness of the polypropylene/polycarbonate (70/30, wt%)/hybrid conductive filler composites were investigated. Nickel-coated carbon fiber (NCCF) was used as main filler and TiO2, multi-walled carbon nanotube, and graphite were used as second fillers in the composites. The pultruded NCCF/polypropylene composite was used in the preparation of the polypropylene/polycarbonate/NCCF/second filler compo
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3

Kaushik, Nitish, Ch Sandeep, P. Jayaraman, J. Justin Maria Hillary, V. P. Srinivasan, and M. Abisha Meji. "Finite Element Method-Based Spherical Indentation Analysis of Jute/Sisal/Banana-Polypropylene Fiber-Reinforced Composites." Adsorption Science & Technology 2022 (September 20, 2022): 1–19. http://dx.doi.org/10.1155/2022/1668924.

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Material hardness of natural fiber composites depends upon the orientation of fibers, ratio of fiber to matrix, and their mechanical and physical properties. Experimentally finding the material hardness of composites is an involved task. The present work attempts to explore the deformation mechanism of natural fiber composites subjected to post-yield indentation by a spherical indenter through a two-dimensional finite element analysis. In the present work, jute-polypropylene, sisal-polypropylene, and banana-polypropylene composites are considered. The analysis is attempted by varying the prope
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4

Jeencham, Rachasit, Nitinat Suppakarn, and Kasama Jarukumjorn. "Effect of Flame Retardant on Flame Retardancy and Mechanical Properties of Glass Fiber/Polypropylene Composites." Advanced Materials Research 264-265 (June 2011): 652–56. http://dx.doi.org/10.4028/www.scientific.net/amr.264-265.652.

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Composites based on polypropylene and glass fiber were prepared by melt mixing. The effect of magnesium hydroxide as a flame retardant on flammability and thermal behavior of glass fiber/polypropylene composites was studied. Ratio of glass fiber to magnesium hydroxide in each composite sample was varied. Maleic anhydride grafted polypropylene (MAPP) was used to improve the interfacial adhesion between polypropylene and fillers. Flammability and thermal behavior of the composites were examined using a horizontal burning test and a thermogravimetric analyzer, respectively. Morphology and mechani
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5

Mansor, Muhd Ridzuan, Mohd Sapuan Salit, Edi Syams Zainudin, Nuraini Abd Aziz, Hambali Arep, and Mohd Fuad Alias. "A Simplified Life Cycle Analysis of an Automotive Parking Brake Lever Using Polymer Composites." Applied Mechanics and Materials 699 (November 2014): 395–400. http://dx.doi.org/10.4028/www.scientific.net/amm.699.395.

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This paper presents a simplified life cycle analysis case study of a new developed automotive parking brake lever using polymer composites. Two composite materials were analysed for the component construction, namely glass fiber/polypropylene composites and hybrid kenaf/glass fiber/polypropylene composites. The rule of mixture and hybrid rule of mixture composite’s micromechanical models were utilized to determine the functional unit in the life cycle analysis. Later, the life cycle inventory data were defined for the production, use and end-of-life stages for the component. The Eco-indicator
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6

Yunus, Robiah Bt, N. H. Zahari, M. A. M. Salleh, and Nor Azowa Ibrahim. "Mechanical Properties of Carbon Fiber-Reinforced Polypropylene Composites." Key Engineering Materials 471-472 (February 2011): 652–57. http://dx.doi.org/10.4028/www.scientific.net/kem.471-472.652.

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In this paper, the mechanical properties of carbon fiber polypropylene composites prepared under various process conditions were investigated. Two different types of polypropylene composites were produced by mixing and compressing the mixtures using hot press. The mixture was prepared by mixing polypropylene with chopped carbon fiber and carbon fiber percentage (wt%) was varied. Mechanical properties investigated were tensile test, impact test, bending test and density test. The Scanning Electron Microscopy (SEM) was employed to study the morphology of the composites. The highest tensile stren
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7

Butylina, Svetlana, Marko Hyvärinen, and Timo Kärki. "Weathering of wood-polypropylene and wood-wollastonite-polypropylene composites containing pigments in Finnish climatic conditions." Pigment & Resin Technology 44, no. 5 (2015): 313–21. http://dx.doi.org/10.1108/prt-08-2014-0066.

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Purpose – The purpose of this paper is to study the resistance of wood-polypropylene and wood-wollastonite-polypropylene composites containing pigments to natural weathering. Design/methodology/approach – Natural weathering of composites was conducted in Finnish climatic conditions for one year. The colour of the composites was determined with a spectrophotometer, the morphology of the composite surface was analysed by scanning electron microscopy (SEM), and the changes in the polymer structure in surface layer of the composites were analysed with differential scanning calorimetry (DSC). Charp
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8

Homkhiew, Chatree, Thanate Ratanawilai, and Wiriya Thongruang. "Flexural Creep Behavior of Composites from Polypropylene and Rubberwood Flour." Applied Mechanics and Materials 368-370 (August 2013): 736–40. http://dx.doi.org/10.4028/www.scientific.net/amm.368-370.736.

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The effects of plastic grades and composition contents on creep behavior of extruded composites from polypropylene and rubberwood flour were investigated. Virgin polypropylene gave lower creep strain than recycled polypropylene, both in composites and as unfilled plastic. An increase of rubberwood flour content reduced the creep deformation of the composites, both virgin and recycled plastics. Maleic anhydride-grafted polypropylene as a coupling, 5 wt% addition increased the creep strain of the composite materials. Likewise, an addition of 1 wt% ultraviolet (UV) stabilizer content significantl
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9

Lebedev, Oleg V., Olga I. Bogdanova, Galina P. Goncharuk, and Alexander N. Ozerin. "Tribological and percolation properties of polypropylene/nanodiamond soot composites." Polymers and Polymer Composites 28, no. 6 (2019): 369–77. http://dx.doi.org/10.1177/0967391119879280.

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The relationship between surface- and bulk-related physical and mechanical characteristics of polypropylene (PP)-based composites filled with nanodiamond soot (NDS) particles was investigated. The tribological properties of a composite were considered as surface properties. Wear and friction coefficient values were measured using a steel pin-on-composite disk testing procedure under the justified set of test parameters. Loading of NDS particles to the PP matrix resulted in a drastic increase in the composite’s wear resistance. A significant increase in friction coefficient and contact temperat
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10

Zhang, P., Q. Li, and Z. Sun. "Effect of polypropylene fibre on flexural properties of concrete composites containing fly ash and silica fume." Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 226, no. 2 (2012): 177–81. http://dx.doi.org/10.1177/1464420712437637.

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The application of fly ash and silica fume in concrete composites by blending synchronously can improve the mechanical properties of concrete composites. However, the concrete composite becomes much brittle with the usage of fly ash and silica fume. Polypropylene fibre is often used to improve the ductility of concrete composites. This article discusses the effect of polypropylene fibre on the flexural properties of concrete composites containing fly ash and silica fume. Results reveal that the addition of polypropylene fibre can increase the flexural strength and decrease the flexural modulus
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11

Lin, Tao, Zheng Wang, and Wen Jing Guo. "Cotton Fiber-Reinforced Polypropylene Composites." Applied Mechanics and Materials 138-139 (November 2011): 581–87. http://dx.doi.org/10.4028/www.scientific.net/amm.138-139.581.

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Cotton stalk is a by-product of cotton planting process, and a great resource as a raw biomass material for manufacturing value-added composite products. The fine structure and fiber size of the cortex, xylem of the cotton stalk were studied in this paper. In addition, a new method for the processing of cotton stalk filament was developed. Composites consisting of polypropylene (PP) and cotton stalk filament were prepared by hot pressing. The effects of PP content and compressing temperature on the mechanical properties of cotton stalk filament /PP composites were studied. The results show tha
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12

López, Joan P., José A. Méndez, Francesc X. Espinach, Fernando Julián, Pere Mutjé, and Fabiola Vilaseca. "Tensile strength characteristics of polypropylene composites reinforced with stone groundwood fibers from softwood." BioResources 7, no. 3 (2012): 3188–200. http://dx.doi.org/10.15376/biores.7.3.3188-3200.

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The behavior of stone groundwood / polypropylene injection-molded composites was evaluated with and without coupling agent. Stone groundwood (SGW) is a fibrous material commonly prepared in a high yield process and mainly used for papermaking applications. In this work, the use of SGW fibers was explored as a reinforcing element of polypropylene (PP) composites. The surface charge density of the composite components was evaluated, as well as the fiber’s length and diameter inside the composite material. Two mixing extrusion processes were evaluated, and the use of a kinetic mixer, instead of a
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13

Dunyamalieva, A. I. "FULLERENCE-CONTAINING COMPOSITES BASED ON ISOTACTIC POLYPROPYLENE." Azerbaijan Chemical Journal, no. 2 (June 29, 2021): 24–28. http://dx.doi.org/10.32737/0005-2531-2021-2-24-28.

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In recent years much attention is paid to elaboration of polymer nanocomposites doped with functional nanofillers. Carbon nanoparticles including fullerenes are among them and they are considered as promising fillers bearing antiradical functionality. However the bad compatibility one of the constraining factors for wider use of these advanced polymeric materials. Compositions based on isotactic polypropylene (PP), fullerene soot (FS) and maleinized high density polyethylene (MA-g-PE) were prepared by the melt blending technique. Mechanical and thermal properties of the obtained PP/FS/MA-g-PE
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14

Wu, Yu Jiao, and Chun Ping Yang. "The Outdoor Aging Properties of Polypropylene/Mica Composite." Applied Mechanics and Materials 670-671 (October 2014): 177–81. http://dx.doi.org/10.4028/www.scientific.net/amm.670-671.177.

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In this paper, In this paper, polypropylene / mica composites were prepared by blending, using polypropylene (PP) as matrix, mica as filler. In order to study the anti-aging properties of polypropylene / mica composite materials, the above polypropylene / mica composite materials were placed outside to study the influence of natural aging time on the anti-aging properties and to explore the natural aging mechanism of polypropylene / mica composites. Natural aging research results show that:with the extension of the natural aging time the surface of materials will appear cracks and sheddings. T
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15

Mezey, Zoltán, and Tibor Czigány. "Mechanical Investigation of Hemp Fiber Reinforced Polypropylene with Different Types of MAPP Compatibilizer." Materials Science Forum 537-538 (February 2007): 223–30. http://dx.doi.org/10.4028/www.scientific.net/msf.537-538.223.

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Mechanical properties of hemp fiber reinforced polypropylene were investigated. Hemp fibers were carded together with polypropylene fibers, and needle punched. Composites were prepared by hot pressing of the PP/hemp mats. Hemp content was varied between 0 and 50 % by weight, in 10% steps. A treatment with two different maleic anhydride grafted polypropylenes was applied in order to increase the fiber/matrix surface adhesion. Tensile, three-point bending and Charpy tests were carried out on the treated and untreated composites.
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16

Dhanalakshmi, Sampathkumar, Punyamoorthy Ramadevi, and Bennehalli Basavaraju. "A study of the effect of chemical treatments on areca fiber reinforced polypropylene composite properties." Science and Engineering of Composite Materials 24, no. 4 (2017): 501–20. http://dx.doi.org/10.1515/secm-2015-0292.

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AbstractAreca fibers have a great prospect in the polymer composite field since they possess superior properties like being light weight, strong and having high strength-to-weight ratio. In addition, areca fibers are biodegradable, non-toxic and eco-friendly and have low maintenance cost. In this research work, areca fibers were subjected to chemical treatments such as NaOH, KMnO4, C6H5COCl and H2C=CHCOOH to reduce the hydrophilic nature of areca fibers and to improve interfacial adhesion between areca fibers and thermoplastic polypropylene matrix, so that areca-polypropylene composites with i
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17

Balogun, Oluwayomi Peter, Adeolu Adesoji Adediran, Joseph Ajibade Omotoyinbo, Kenneth Kanayo Alaneme, and Isiaka Oluwole Oladele. "Evaluation of Water Diffusion Mechanism on Mechanical Properties of Polypropylene Composites." International Journal of Polymer Science 2020 (October 17, 2020): 1–12. http://dx.doi.org/10.1155/2020/8865748.

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This study evaluates the water diffusion mechanism on mechanical properties of polypropylene reinforced composites. Compounding of the composites into sheets was carried out using the compression moulding techniques by incorporating varying weight percentage of fibers and polypropylene. Mechanical properties of the composites were assessed according to ASTM standards, while the composite fracture surface was examined using a scanning electron microscope. The water absorption behaviour and diffusion mechanisms on mechanical properties of fabricated composites were analysed using a water immersi
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18

Zabihzadeh, Seyed Majid. "Flexural properties and orthotropic swelling behavior of bagasse/thermoplastic composites." BioResources 5, no. 2 (2010): 650–60. http://dx.doi.org/10.15376/biores.5.2.650-660.

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The flexural properties of commercial bagasse-filled polyethylene (PE) and polypropylene (PP) composites were determined as a function of strain rate at room temperature. The applied strain rates were 1.5 ×10-4, 3.75×10-4, 7.5×10-4, and 1.5×10-3 s-1. The flexural modulus tended to increase linearly for the two types of composites with the logarithm of strain rate. The bending strength of polypropylene composite also behaved in a similar manner, but the polyethylene composite exhibited different behavior in which the MOR values of polyethylene composite didn’t alter appreciably as a function of
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19

Shimels, Hailu G., Sisay Ketema, Tomasz Trzepieciński, and Temesgen Batu. "Experimental Investigation of Aloe Vera-Treated False Banana (Ensete Ventricosum) Fibre-Reinforced Polypropylene Composite." Journal of Composites Science 7, no. 7 (2023): 288. http://dx.doi.org/10.3390/jcs7070288.

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This research work investigates the effects of the concentration and treatment of chopped false banana (Ensete ventricosum) fibres on the mechanical properties of a polypropylene matrix. The chopped false banana fibres (FBFs) were modified using Aloe Vera gel following treatment with 5% NaOH for 12 h at room temperature, with 1% acetic acid used to neutralise the remaining NaOH. FBF-reinforced polypropylene composite plates were then manufactured with 10, 20, 30, and 40 wt.% of chopped FBF. The mechanical properties were investigated using the compressive, impact, and three-point bending tests
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20

Bas, Ayse B., Oktay Yilmaz, Anil Ibis, Mustafa Dogu, Kadir Kirkkopru, and Fatma S. Guner. "Melt flow properties of graphite nanoplatelets-filled polypropylene." Journal of Composite Materials 51, no. 19 (2016): 2793–804. http://dx.doi.org/10.1177/0021998316675502.

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Rheological behavior of polypropylene/graphite nanoplatelet composites of varying content, temperature, and filler shape was investigated by capillary and rotational rheometers. Scanning electron microscope images were taken in order to examine the filler shape and interaction between fillers and polymer matrix. Viscosity measurements of polypropylene/graphite composites showed shear thinning behavior like neat polypropylene. Filler inclusion resulted in increase in shear viscosity and shear thinning behavior of composites. The effect of filler concentration on viscosity is more appreciable in
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21

Etaati, Amir, Selvan Pather, Moloud Rahman, and Hao Wang. "Ground Hemp Fibers as Filler/Reinforcement for Thermoplastic Biocomposites." Advances in Materials Science and Engineering 2015 (2015): 1–11. http://dx.doi.org/10.1155/2015/513590.

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Mechanical properties (tensile, flexural, and impact) of ground hemp fibre polypropylene composites were investigated. Ground alkali-treated hemp fibre and noil hemp fibres with various initial fibre lengths were utilized to reinforce polypropylene matrix. Firstly, the microstructural and tensile characterizations of the two types of fibres were characterized using scanning electron microscope (SEM), Fourier transform infrared analysis (FTIR), and Dynamic Mechanical Analyser (DMA). Then, the fibres were ground into different lengths of 0.2, 0.5, 1, and 2 mm; composites containing 40 wt% short
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22

Han, Zhi Jia, Sheng Fei Shen, and Zai Yuan Li. "Study on Preparation of Nanocarbon Black-Polypropylene Electric Conduction Composite Materials." Advanced Materials Research 785-786 (September 2013): 183–86. http://dx.doi.org/10.4028/www.scientific.net/amr.785-786.183.

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The paper has learned on the preparation of nanometer carbon black and polypropylene nanocarbon black-polypropylene composite material by using the small extrusion blending mixer which has been designed by our team. The results show that: Resistance of nanometer carbon black - polypropylene composites decreases with increasing carbon black content and extrusion mixing times. Through single factor experiment and orthogonal experiment to determine the optimum process conditions are at 260°C, nanocarbon black content 60%, extrusion mixing times 5. Under these conditions the resistance of nanomete
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23

Chen, Tianran, Dana Kazerooni, Lin Ju, David A. Okonski, and Donald G. Baird. "Development of Recyclable and High-Performance In Situ Hybrid TLCP/Glass Fiber Composites." Journal of Composites Science 4, no. 3 (2020): 125. http://dx.doi.org/10.3390/jcs4030125.

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By combining the concepts of in situ thermotropic liquid crystalline polymer (TLCP) composites and conventional fiber composites, a recyclable and high-performance in situ hybrid polypropylene-based composite was successfully developed. The recycled hybrid composite was prepared by injection molding and grinding processes. Rheological and thermal analyses were utilized to optimize the processing temperature of the injection molding process to reduce the melt viscosity and minimize the degradation of polypropylene. The ideal temperature for blending the hybrid composite was found to be 305 °C.
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Bujjibabu, Gunturu, Vemulapalli Chittaranjan Das, Malkapuram Ramakrishna, and Konduru Nagarjuna. "Development of Banana/Coir Natural Fibers Reinforced Polypropylene Hybrid Composites: The Effect of MA-g-PP (Maleic Anhydride Grafted Polypropylene) on Mechanical Properties and Thermal Properties." Nano Hybrids and Composites 32 (April 2021): 85–97. http://dx.doi.org/10.4028/www.scientific.net/nhc.32.85.

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Banana/Coir fiber reinforced polypropylene hybrid composites was formulated by using twin screw extruder and injection molding machine. Specimens were prepared untreated and treated B/C Hybrid composites with 4% and 8% of MA-g-PP to increase its compatibility with the polypropylene matrix. Both the without MA-g-PP and with MA-g-PP B/C hybrid composites was utilized and three levels of B/C fiber loadings 15/5, 10/10 and 5/15 % were used during manufacturing of B/C reinforced polypropylene hybrid composites. In this work mechanical performance (tensile, flexural and impact strengths) of untreate
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25

JOLLY, MARC, and KRISHNAN JAYARAMAN. "MANUFACTURING FLAX FIBRE-REINFORCED POLYPROPYLENE COMPOSITES BY HOT-PRESSING." International Journal of Modern Physics B 20, no. 25n27 (2006): 4601–6. http://dx.doi.org/10.1142/s0217979206041756.

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The renewable characteristic of natural fibres, such as flax, and the recyclable nature of thermoplastic polymers, such as polypropylene, provide an attractive eco-friendly quality to the resulting composite materials. Common methods for manufacturing natural fibre-reinforced thermoplastic composites, injection moulding and extrusion, tend to degrade the fibres during processing. Development of a simple manufacturing technique for these composites, that minimises fibre degradation, is the main objective of this study. Flax fibres were conditioned, cut into lengths ranging from 1 mm to 30 mm wi
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Lei, Wen, and Xiao Ming Jin. "Effects of Modification on Structure and Properties of Ramie Fiber/Polypropylene Composites." Advanced Materials Research 146-147 (October 2010): 441–44. http://dx.doi.org/10.4028/www.scientific.net/amr.146-147.441.

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Ramie fiber and polypropylene were used as raw materials,ramie fiber/polypropylene composites were prepared by compression molding process,the effects of treating the ramie fiber with silane coupling agent and compatibilizing the composite with maleic anhydride gafted polypropylene(MAPP) on the structure, melting and mechanical properties of the composites were studied,the effects of immersion time in water on the mechanical properties of the composites were also investigated.The results show that,both the modification with coupling agent and by means of compatibilizing agent can strengthen th
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Zulkifli, Nur Izzati, and Noorasikin Samat. "Mechanical Properties of Green Recycled Polypropylene Composites: Effect of Maleic Anhydride Grafted Polypropylene (MAPP) Coupling Agent." Advanced Materials Research 812 (September 2013): 187–91. http://dx.doi.org/10.4028/www.scientific.net/amr.812.187.

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Recycled polypropylene/microcrystalline cellulose (rPP/MCC) composites were prepared by adding different loadings of maleic anhydride grafted polypropylene (MAPP) coupling agent. The tensile, impact and morphological properties of the composites were investigated. The obtained results show that the tensile and impact strengths of the composites were significantly enhanced with the addition of MAPP loading from 2 to 5 wt%, as compared with unfilled rPP/MCC composites. However, it was found that at low filler content, different amounts of MAPP resulted in no appreciable change in the tensile str
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Jeencham, Rachasit, Nitinat Suppakarn, and Kasama Jarukumjorn. "Flammability and Mechanical Properties of Sisal Fiber/Polypropylene Composites: Effect of Combination of Flame Retardants." Advanced Materials Research 123-125 (August 2010): 85–88. http://dx.doi.org/10.4028/www.scientific.net/amr.123-125.85.

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Ammonium polyphosphate (APP) and zinc borate (Zb), as flame retardants were incorporated into sisal fiber/polypropylene (PP) composites. Ratios of APP to Zb were varied. Maleic anhydride grafted polypropylene (MAPP) was used to improve the interfacial adhesion between polypropylene and fillers. Flammability of the composites was examined using a horizontal burning test, a vertical burning test, and a limiting oxygen index test. Morphology and mechanical properties of the composites were also investigated. The composite containing 30 phr of APP and 10 phr of Zb exhibited better flame retardancy
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Soyaslan, Devrim, Özer Göktepe, and Selçuk Çömlekçi. "The effects of fabric lamination angle and ply number on electromagnetic shielding effectiveness of weft knitted fabric-reinforced polypropylene composites." Science and Engineering of Composite Materials 21, no. 1 (2014): 129–35. http://dx.doi.org/10.1515/secm-2013-0045.

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AbstractIn this study, it was aimed to investigate the effects of fabric lamination angle and fabric ply number on electromagnetic shielding effectiveness (EMSE) of weft knitted fabric-reinforced polypropylene composites. Knitted fabric-reinforced composites are composed of aramid yarn, polypropylene yarn, and copper wire. Polypropylene is the matrix phase and the aramid yarn and copper wires are the reinforcement phase of the composite materials. It was achieved to form 1.5 to 3 mm thickness composites. The composites have nearly 20–50 dB electromagnetic shielding values. To form the knitted
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Pérez, Nerea, Xiao-Lin Qi, Shibin Nie, Pablo Acuña, Ming-Jun Chen, and De-Yi Wang. "Flame Retardant Polypropylene Composites with Low Densities." Materials 12, no. 1 (2019): 152. http://dx.doi.org/10.3390/ma12010152.

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Polypropylene (PP) is currently widely used in areas requiring lightweight materials because of its low density. Due to the intrinsic flammability, the application of PP is restricted in many conditions. Aluminum trihydroxide (ATH) is reported as a practical flame retardant for PP, but the addition of ATH often diminishes the lightweight advantage of PP. Therefore, in this work, glass bubbles (GB) and octacedylamine-modified zirconium phosphate (mZrP) are introduced into the PP/ATH composite in order to lower the material density and simultaneously maintain/enhance the flame retardancy. A seri
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31

Zhao, Yu, Ming Du, Ke Xin Zhang, and Liang Gao. "Effect of Modified Diatomite on Crystallinity and Mechanical Properties of Polypropylene." Materials Science Forum 913 (February 2018): 551–57. http://dx.doi.org/10.4028/www.scientific.net/msf.913.551.

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The different coupling agent is used for diatomite modification. The diatomite with different content are melt and mixed with polypropylene to prepare diatomite/polypropylene composites. The modification effects of different coupling agent on diatomite and the influence of agent and diatomite contents on crystallization behavior of polypropylene and mechanical properties of composites are investigated. The results show that different coupling agents have the modification effects on diatomite influence crystallization of polypropylene but the aluminum agent is better than other agents. With the
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32

Suppakarn, Nitinat, Kasama Jarukumjorn, and Saowapa Tananimit. "Effect of Flame Retardant on Mechanical Properties and Flammability of Sisal/PP Composites." Advanced Materials Research 47-50 (June 2008): 403–6. http://dx.doi.org/10.4028/www.scientific.net/amr.47-50.403.

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Due to environmental reasons and their acceptable mechanical properties, natural fiber based polymer composites have been increasingly used in various applications, e.g. housing materials, automotive parts. However, their low thermal resistance and fire behavior limit the use of these materials. In this work, magnesium hydroxide (Mg(OH)2), as a flame retardant, was incorporated into sisal/polypropylene composites. Ratio of sisal fiber to Mg(OH)2 in each composite sample was varied. Maleic anhydride grafted polypropylene (MAPP) was also used to improve the interface of polypropylene and fillers
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33

Lee, Chao-Yu, and Chia-Wei Chang. "Dielectric Constant Enhancement with Low Dielectric Loss Growth in Graphene Oxide/Mica/Polypropylene Composites." Journal of Composites Science 5, no. 2 (2021): 52. http://dx.doi.org/10.3390/jcs5020052.

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Polypropylene has been widely used as dielectric material in organic thin-film capacitors due to their high breakdown strength, low dielectric loss and self-healing capability. However, polypropylene’s energy density is relatively low. Increasing the energy density of polypropylene by adding materials with a high dielectric constant is commonly used. Still, it often leads to an increase in dielectric loss, lower dielectric strength and other shortcomings. In this study, a thin 2D platelet of mica/graphene oxide composite material was made from exfoliated mica as a substrate and attached by gra
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34

Bledzki, Andrzej Korneliusz, Marta Lucka, Abdullah Al Mamun, and Janusz Michalski. "Biological and electrical resistance of acetylated flax fibre reinforced polypropylene composites." BioResources 4, no. 1 (2008): 111–25. http://dx.doi.org/10.15376/biores.4.1.111-125.

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Flax fibre reinforced polypropylene composites were fabricated using a high speed mixer followed by injection moulding. Prior to composite production, the fibre was modified by acetylation in the presence of perchloric acid. The effect of acetylation of the fibre was assessed on the basis of moisture resistance and dielectric properties of the resulting composites. It was found that the moisture absorption and swelling properties of the composites were reduced respectively to 60% and 30% due to acetylation. Two different types of biocide were mixed with untreated flax fibre, and the samples we
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Taib, Razaina Mat, Nurul Mujahidah Ahmad Khairuddin, and Zainal Arifin Mohd Ishak. "The Influence of AlkaliTreatment and Compatibilizer Addition on the Tensile Properties and Water Absorption Behavior of Polypropylene/Kenaf Fiber Composites." Advanced Materials Research 626 (December 2012): 449–53. http://dx.doi.org/10.4028/www.scientific.net/amr.626.449.

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Composites of polypropylene (PP) and kenaf fiber (KF) were immersed in water at room temperature. The fiber was treated with alkaline solution. A compatibilizer, maleic anhydride-grafted polypropylene (MAPP) was added in some composite formulations. Composite with alkali treated fibers (KFA) showed similar tensile strength but lower tensile modulus than the composite with untreated fiber, KF. Addition of MAPP was crucial to improve the tensile properties and water resistance of either PP/KF or PP/KFA composites. Alkali treatment adversely affected the water absorption behavior of PP/KF composi
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Toriz, G., F. Denes, and R. A. Young. "Lignin-polypropylene composites. Part 1: Composites from unmodified lignin and polypropylene." Polymer Composites 23, no. 5 (2002): 806–13. http://dx.doi.org/10.1002/pc.10478.

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Mirza, Foisal Ahmed, Sheikh Md Rasel, Myung Soo Kim, Ali Md Afsar, Byung Sun Kim, and Jung I. Song. "Lyocell Fiber Reinforced Polypropylene Composites: Effect of Matrix Modification." Advanced Materials Research 123-125 (August 2010): 1159–62. http://dx.doi.org/10.4028/www.scientific.net/amr.123-125.1159.

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Composites with polypropylene (PP) and lyocell fibers were manufactured by compression molding technique. In order to improve the interfacial adhesion between the natural fibers and thermoplastic matrix during manufacturing, maleic anhydride grafted polypropylene (MAPP) as a coupling agent has been employed. Physical properties such as void contents and water absorption rate were studied. Tensile and flexural tests were carried out to evaluate the composite mechanical properties. Tensile test results showed the higher strength and modulus of composite than pure polypropylene (PP). In addition,
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Borisovich Glazyrin, Andrei, Marina Viktorovna Bazunova, Vadim Petrovich Zakharov, and Elena Mikhailovna Zakharova. "The Influence of Conditions of Secondary Propylene Recycling in the Presence of Vegetable Fillers on Thermal Properties of Polymer Composites." International Journal of Engineering & Technology 7, no. 4.38 (2018): 1122. http://dx.doi.org/10.14419/ijet.v7i4.38.27655.

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This article discusses the influence of conditions of secondary polypropylene recycling in the presence of vegetable fillers on thermal properties of polymer composites. Secondary polypropylene was recycled by the following methods: extrusion using two-screw extruder, agitation in mixing chamber of laboratory station (plastograph), die casting. Polymer composites on the basis of secondary polypropylene in the presence of vegetable fillers (wood dust, rice hulls, buckwheat hulls, and chaff) were produced by extrusion. Thermal properties of polymer composites were determined by thermogravimetric
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Kajaks, Janis, Karlis Kalnins, Sandris Uzulis, and Juris Matvejs. "Some Exploitation Properties of Wood Plastic Composites Based on Polypropylene and Plywood Production Waste." Key Engineering Materials 721 (December 2016): 48–52. http://dx.doi.org/10.4028/www.scientific.net/kem.721.48.

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Three types of birch wood plywood by-products: plywood sanding dust (PSD), plywood sawdust (PSWD) and refined plywood scrap fibres (RPSF) and polypropylene composites exploitation properties (tensile, flexural modulus), microhardness water resistance and fluidity of composite melts, were evaluated. These investigations showed possibility of usage as excellent reinforcements for polypropylene presented by-products. For example tensile modulus increase up to 5 times, but flexural modulus till 2.3 times. Optimal content of PSD in polypropylene composites is 40 wt%, but in the cases of PSWD and RP
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Kaewkuk, Sulawan, Wimonlak Sutapun, and Kasama Jarukumjorn. "Effect of Heat Treated Sisal Fiber on Physical Properties of Polypropylene Composites." Advanced Materials Research 123-125 (August 2010): 1123–26. http://dx.doi.org/10.4028/www.scientific.net/amr.123-125.1123.

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Sisal fiber reinforced polypropylene composites were prepared using an internal mixer. Heat treatred sisal fibers were performed by heating the fibers in an oven at 150, 170, and 200°C under an atmospheric pressure and a presence of air. The composites prepared at a fiber content of 20 wt% were molded by an injection molding machine for mechanical tests including tensile and impact properties. Morphologies of the composites were examined using a scanning electron microscope (SEM). Viscosity at various shear rate of the composites were also investigated. Tensile strength and impact strength of
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Pandji Nugraha, Mohammad, Ilham Fahira Minan Nurrohman, Haris Ardianto, and Hery Setiawan. "TENSILE TEST OF CARBON CLOTH COMPOSITE WITH MATRIX POLYPROYLENE RECYCLING WITH WORKING TEMPERATURE PARAMETER OF 600℃ WITH METAL AND CERAMIC PRESS MEDIA." Teknika STTKD: Jurnal Teknik, Elektronik, Engine 8, no. 1 (2022): 52–57. http://dx.doi.org/10.56521/teknika.v8i1.504.

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Right now the distribution of polypropylene in the environment has become more and more so that it can pollute the environment. Thus polypropylene waste can be converted into a composite matrix. In this study, the manufacture of composites from recycled polypropylene was carried out, to be further combined with carbon fiber. After that, tensile testing is carried out to find out the mechanical properties. As a variation, there are differences in press media, namely using metal and ceramics. This research method is carried out experimentally, where when polypropylene waste has been softened usi
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Suiffi, Hassan, Anas El Maliki, Fatima Majid, and Omar Cherkaoui. "The effect of using polypropylene fibers on the durability and fire resistance of concrete." Frattura ed Integrità Strutturale 15, no. 58 (2021): 296–307. http://dx.doi.org/10.3221/igf-esis.58.22.

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In order to study the effect of polypropylene fibers on the durability of cementitious composites, several experimental tests have been carried out in the laboratory. The composite was tested with different volume fractions of polypropylene fibers (0.05%, 0.10%, 0.30% and 0.50%). All the results relating to the indicators (porosity accessible to water εb, to the oxygen permeability Kapp.gas and diffusivity Dns) indicate that the addition of polypropylene fibers in a cement matrix represents only a small effect on durability. This panel of general sustainability indicators can be supplemented b
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Biswas, Shreyas. "Experimental Investigation and Design Analysis of Hollow Glass Microsphere loaded PP/ABS Composites." International Journal for Research in Applied Science and Engineering Technology 10, no. 1 (2022): 503–10. http://dx.doi.org/10.22214/ijraset.2022.39867.

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Abstract: The objective of the present is to investigate hollow glass microspheres (HGMs) experimentally and carry out design analysis of hollow glass microsphere loaded PP/ABS composites. The tensile and notched Charpy impact test of HGM-filled acrylonitrile-butadiene-styrene copolymer (ABS) and Polypropylene (PP) composites will be studied with varying the concentrations of PP/ABS composite with HGM. Also further the design analysis will be studied by conducting the simulation under the same criteria and comparing the results at the end. This is done to introduce a light weight material with
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Hyvärinen, Marko, Svetlana Butylina, and Timo Kärki. "Accelerated and Natural Weathering of Wood-Polypropylene Composites Containing Pigments." Advanced Materials Research 1077 (December 2014): 139–45. http://dx.doi.org/10.4028/www.scientific.net/amr.1077.139.

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In general, wood-polymer composites are vulnerable to weathering factors such as UV radiation, moisture, freeze-thaw action. Weathering can cause discoloration, chalking, dimensional change, and loss of mechanical properties of wood-polymer composites. This comparative study was focused on weatherability of wood–polypropylene composites made with and without pigments. Two types of inorganic pigments were applied: carbon black master-batch and synthetic iron oxide. Wood-polypropylene composite made without pigment was used as a reference. Also, composites prepared with addition of wollastonite
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Sharmila, D. J., J. Brijitta, and R. Sampathkumar. "Enhanced Dielectric Properties of Polypropylene based Composite using Zinc Oxide Nanorods Filler." Journal of Surface Science and Technology 33, no. 3-4 (2017): 115. http://dx.doi.org/10.18311/jsst/2017/16187.

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<p>Polypropylene and zinc oxide nanorods composites were prepared by combination of solution and mixture melting methods. Dielectric properties of the composite thin films were studied to see if zinc oxide nanorods have effect on the dielectric properties of polypropylene thin film. Introduction of zinc oxide nanorods at low filler content in the polypropylene matrix significantly improves the dielectric constant of the matrix. Simultaneously the structure of the composites was characterized by UV, XRD and SEM to understand the features in the structure that determine the functionality o
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Czél, György, and Zoltán Kanyok. "MAgPP an Effective Coupling Agent in Rice Husk Flour Filled Polypropylene Composites." Materials Science Forum 537-538 (February 2007): 137–44. http://dx.doi.org/10.4028/www.scientific.net/msf.537-538.137.

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Different properties (tensile strength, elongation, modulus, impact strength) of rice husk (RH) reinforced polypropylene (PP) coupled by Maleic-Anhydride grafted Polypropylene (MAgPP) have been investigated. MAgPP is an effective coupling agent, not only in cellulosic-fibre filled polyolefine composites, but in rice husk flour filled polypropylene composite systems as well. It gives a utilizable construction polymer matrix composite (PMC) material even at a 40 wt.% RH filling degree. The strength and modulus increases by adding the rice husk but the elongation decreases in a non-monotonic way.
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Gao, Jing Long, and Yan Hui Liu. "Thermal and Electrical Properties of Polypropylene/Carbon Nanotube Composites." Advanced Materials Research 299-300 (July 2011): 802–5. http://dx.doi.org/10.4028/www.scientific.net/amr.299-300.802.

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In this work, the carbon nanotubes(CNTs) were reinforced with polypropylene(PP)matrix resins to improve the electrical and thermal properties of PP/ CNTs composites in different contents of 0,1, 3,and 5 wt.%. The surface, volume resistivity and crystallization type of the composites were investigated. As a result, the maximum degradation rate temperature of the composite is improved 30 °C, the surface resistivity and volume resistivity of composite are 5 ×106, 7 ×105,respectively, for the optimum composition of composite (CNTs 3 wt.%). The integrated XRD pattern of the composites shows the typ
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Mat Rasat, Mohd Sukhairi, Razak Wahab, Amran Shafie, et al. "Effect of Wood-Fiber Geometry Size on Mechanical Properties of Wood-Fiber from Neolamarckia Cadamba Species Reinforced Polypropylene Composites." Journal of Tropical Resources and Sustainable Science (JTRSS) 1, no. 1 (2021): 42–50. http://dx.doi.org/10.47253/jtrss.v1i1.669.

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Using natural wood-fiber as reinforcement in commercial thermoplastics is gaining momentum due to its high specific properties and renewable resources. In this study, the effect of wood particle geometry size on mechanical properties of thermoplastics composite was investigated. The wood species that has been chosen is Kelempayan species (Neolamarckia cadamba) and reinforced with polypropylene using fiber geometry size of 75 and 250 ?m. Thermoplastic composites were produced from two types of ratio (30:70 and 10:90) between wood-fiber and polypropylene. Static bending and tensile strength were
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Çavuş, Vedat. "Selected properties of mahogany wood flour filled polypropylene composites: The effect of maleic anhydride-grafted polypropylene (MAPP)." BioResources 15, no. 2 (2020): 2227–36. http://dx.doi.org/10.15376/biores.15.2.2227-2236.

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The aim of this study was to produce mahogany (Swietenia macrophylla) wood flour filled polypropylene (both recycled and virgin) composites and to determine the effects of maleic anhydride-grafted polypropylene (MAPP) on the interfacial compatibility, density, and other mechanical properties of the resulting composites. Approximately 40 wt% of mahogany wood flour, and 60 wt% of polypropylene, 3 wt% of MAPP, 1.5 wt% of zinc stearate, and 1.5 wt% of wax were used during composite manufacturing. Test specimens were manufactured using extrusion and injection molding processes. The flexural, tensil
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Hoque, Mohammad Bellal, Solaiman, A. B. M. Hafizul Alam, Hasan Mahmud, and Asiqun Nobi. "Mechanical, Degradation and Water Uptake Properties of Fabric Reinforced Polypropylene Based Composites: Effect of Alkali on Composites." Fibers 6, no. 4 (2018): 94. http://dx.doi.org/10.3390/fib6040094.

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In this study, a fabric was manufactured consisting of 50% pineapple, 25% jute and 25% cotton fibers by weight, to make composites using polypropylene (PP) as a matrix material. We used compression molding technique, which kept 30% of the fabric content by total weight as the composite. The tensile strength (TS), tensile modulus (TM), elongation break (Eb%), bending strength (BS) and bending modulus (BM) were investigated. From analyzed data, it was found that the composite values of TS, TM, Eb%, BS and BM were 58 MPa, 867 MPa, 22.38%, 42 MPa and 495 MPa, respectively. The TS, TM, Eb%, BS and
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