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Journal articles on the topic 'Melt foaming method'

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Published: 3 June 2025
Last updated: 31 July 2025

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1

Shi, Tong, Xiang Chen, Ying Cheng, and Yanxiang Li. "Foaming Process and Properties of 6063 Aluminum Foams by Melt Foaming Method." MATERIALS TRANSACTIONS 58, no. 2 (2017): 243–48. http://dx.doi.org/10.2320/matertrans.m2016244.

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2

Yang, Dong Hui, Chang Hwan Seo, Da Peng Yao, and Bo Young Hur. "Evolution of Al Alloy Melt Foam Pore Structure in Foaming Process." Materials Science Forum 544-545 (May 2007): 315–18. http://dx.doi.org/10.4028/www.scientific.net/msf.544-545.315.

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A study was carried out to understand the relationship between the pore structure’s evolution of Al alloy melt foam and its preparation variables, which include decomposition properties of titanium hydride, the stirring foaming time and the holding foaming time. The results show that the foaming process of Al alloy melt can be inferred by the relation curves of decomposition quantity of titanium hydride and time at a specific temperature. The porosity of Al alloy melt during stirring foaming period is kept constant while the pore number increases and pore diameter decreases, which is a new met
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3

Luo, Hong Jie, Hao Lin, Jian Kun Zhang, and Guang Chun Yao. "Al-Si Alloy Foam Prepared by Two Step Foaming Method." Materials Science Forum 817 (April 2015): 42–47. http://dx.doi.org/10.4028/www.scientific.net/msf.817.42.

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Two basic methods can be used to fabricate aluminum foam. One is powder metallurgy route which can provide the near net shape casting containing aluminum foam core, and the other is melt foaming route which can prepare large scale aluminum foam plate directly. To combine the advantages of above two methods, the precursor was obtained through melt foaming route and then baked in a furnace like that of powder metallurgy method in this investigation. The test results indicated that the SiC and TiH2 particles after treatment in air could be dispersed in Al-Si matrix alloy melt and the precursors w
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4

Song, Yeong Hwan, Masakazu Tane, Takuya Ide, Yoshihiro Seimiya, Bo Young Hur, and Hideo Nakajima. "Effect of Foaming Temperature on Pore Morphology of Al/AlN Composite Foam Fabricated by Melt Foaming Method." Materials Science Forum 658 (July 2010): 189–92. http://dx.doi.org/10.4028/www.scientific.net/msf.658.189.

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Al foams whose matrix contains dispersed AlN particles (Al/AlN composite foams) were prepared by a melt foaming method, and the effect of foaming temperature on the pore morphology of the prepared foams was investigated. First, Al/AlN composites were prepared by non-compressive infiltration of Al powder compacts with molten Al alloy in nitrogen atmosphere. Next, the prepared composites were melted by induction heating and foamed at various temperatures using TiH2 powders as blowing agents. The porosity of prepared Al/AlN composite foams slightly decreases with increasing foaming temperature, a
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5

Huang, Po-Wei, Hsin-Shu Peng, Sheng-Jye Hwang, and Chao-Tsai Huang. "Study on the Flow, Foaming Characteristics and Structural Strength of Polypropylene Structural Foam Injection Molding by Innovative Nitrogen and Molten Plastic Mixing Mechanism." Polymers 15, no. 9 (2023): 2116. http://dx.doi.org/10.3390/polym15092116.

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Plastic foam molding methods include thermoforming, extrusion and injection molding. Injection foam molding is a one-time molding method with high production efficiency and good product quality. It is suitable for foamed plastic products with complex shapes and strict size requirements. It is also the main method for producing structural bubbles. In this investigation, we developed a structural foam injection molding technology using the gas supply equipment connected to the unique plasticizing mechanism of the injection machine and studied its influence on the specimens’ melt rheology quality
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6

Zhou, Xiao-Ming, and Yi-Fan Liu. "Preparation and properties of high melt strength PBS and its environmentally friendly foaming materials." Cellular Polymers 41, no. 1 (2021): 30–38. http://dx.doi.org/10.1177/02624893211053674.

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In order to improve the melt strength of Poly(butylene succinate) (PBS) resin, the silane graft-crosslinked PBS copolyester materials were prepared by melt blending method with vinyltriethyl silane as graft material and benzyl peroxide (BPO) as initiator. At the same time, the environmentally friendly compound foaming agent (citric acid and sodium bicarbonate) was used as foaming agent. The results showed that the tensile properties and melt strength of PBS resin were greatly improved after silane grafting and cross-linking, and the graft and cross-linking reaction between PBS resin and silane
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7

Kim, Sang Youl, Hwan Goo Seong, and Bo Young Hur. "Characteristics of Al Foam with High Porosity by Melt Foaming Method." Solid State Phenomena 124-126 (June 2007): 1801–4. http://dx.doi.org/10.4028/www.scientific.net/ssp.124-126.1801.

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Al foams with high porosity were fabricated via melt foaming method. In this process, Ca and TiH2 are used as thickening and foaming agent. The macrostructure of aluminum foams exhibited homogeneous distribution of fine pore sizes at shorter holding time. From comparison of the actual pore sizes with ones calculated with modified Ostwald ripening, the measured pore sizes were well fitted to the calculated ones. These results suggest that hydrogen diffusion through pore walls from smaller pores to a larger one is the main process of pore evolution at least in the later period of holding. The de
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8

Gandhapu, Sandeep, Aryan Mahajan, and S. Sasikumar. "Cell Structure Improvement in Melt Processed Pure Aluminium Foams by Pre-treatment of Foaming Mixture." IOP Conference Series: Materials Science and Engineering 1248, no. 1 (2022): 012038. http://dx.doi.org/10.1088/1757-899x/1248/1/012038.

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Abstract This work aims to evaluate the cell structure of aluminium foams blown by using foaming mixture subjected under ball milling and heat treatments. This paper presents the study on the effects of various pre-treatment of foaming mixture on the cell structure of foamed aluminium (Al) fabricated via melt route. This study also demonstrates how the melt foaming method can be used to fabricate small-sized Al foams. Prior to foaming the Al melt, the foaming mixture containing TiH2 and Al was pre-treated by ball milling and heat treatment in four different ways. The foaming mixtures were char
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9

Hu, Zhong Yun, Dong Hui Yang, Wei Ping Chen, et al. "Manufacture of Aluminum Foam without Thickening Agent via Melt Foaming Method and its Compressive Behavior." Materials Science Forum 817 (April 2015): 504–9. http://dx.doi.org/10.4028/www.scientific.net/msf.817.504.

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This paper reported the fabrication of cellular Al foams without thickening agent addition via melt foaming method with the porosity rage of 62.4%-83.3% and the pore size of approximate 2.0mm. CaCO3 was selected as the blowing agent. 1.0wt.%-3.0wt.% Mg was added in the matrix. The gas releasing reaction mechanism was revealed by TG-DTA (Thermo Gravimetric Analysis-Differential Thermal Analysis) experiments. The influence of the adding methods of Mg and CaCO3 on the foaming process was studied and the results showed that, compared to adding powder mixture, the method of adding Mg bulk into the
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10

Seo, Chang Hwan, M. J. Jeong, In Young Jung, and Bo Young Hur. "Comparative Study on TiH2 and CaCO3 for Fabrication of Mg Alloy Foams." Materials Science Forum 569 (January 2008): 273–76. http://dx.doi.org/10.4028/www.scientific.net/msf.569.273.

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Aluminum alloy foams, new materials belonging to a special class of porous materials, have been prepared using melt foaming method. Silicon was chosen alloying element due to its low density, high strength, effective casting and reduced shrinkage. Melt foaming method is cost-effective method to fabricate metal foam. Usually, TiH2 is applied to blowing agent, but its cost is high. CaCO3 is one of candidates to substitute TiH2 in the economic view-point. For the comparison of formability, Mg alloy foams were prepared by TiH2 and CaCO3. However, the decomposition temperature of CaCO3 is higher th
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11

Zhao, Wei Min, Hui Zhang, Hai Peng Li, et al. "Study on Fabrication, Defects and Compression Properties of Al Foams at Different Foaming Temperatures." Advanced Materials Research 214 (February 2011): 70–74. http://dx.doi.org/10.4028/www.scientific.net/amr.214.70.

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Using Al powder as thickening agent and CaCO3 powder as foaming agent, Al foams with above 85% porosity, pore sizes between 1mm and 4mm and relatively uniform pore structure have been fabricated by melt foaming method at different foaming temperatures. Meanwhile, the paper researched the effect of foaming temperature on foaming effect and analyzed the defects in Al foams. At last, compression test were taken in order to investigate the mechanical properties of aluminum foams. The results showed that pore structure, pore distribution and compression properties of Al foams fabricated at 720°C we
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12

Park, Soo Han, Bo Young Hur, and Kwang-Ho Song. "Rheology and Foaming Characteristics of Melt for Metal Foam." Materials Science Forum 475-479 (January 2005): 2683–86. http://dx.doi.org/10.4028/www.scientific.net/msf.475-479.2683.

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Metal foam was produced by the Melt Foaming Method. In this foaming process, the surface tension and the viscosity of molten Al (recycled waste Al) and Mg alloy (Az91) that were measured respectively by the ring method and the rotational method are the most important two factors. They surface tension and the viscosity were investigated in the temperature range of about 600-900°C and the effects of the additional surface-active elements were investigated at the about 640°C. The measured surface tension of the molten recycled Al and Az91 decreased linearly with the increasing temperature of Ar g
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13

Fu, Wensheng, and Yanxiang Li. "Fabrication, Processing, Properties, and Applications of Closed-Cell Aluminum Foams: A Review." Materials 17, no. 3 (2024): 560. http://dx.doi.org/10.3390/ma17030560.

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Closed-cell aluminum foams have many excellent properties, such as low density, high specific strength, great energy absorption, good sound absorption, electromagnetic shielding, heat and flame insulation, etc. As a new kind of material, closed-cell aluminum foams have been used in lightweight structures, traffic collision protections, sound absorption walls, building decorations, and many other places. In this paper, the recent progress of closed-cell aluminum foams, on fabrication techniques, including the melt foaming method, gas injection foaming method, and powder metallurgy foaming metho
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14

Song, Yeong Hwan, Soo Han Park, Sang Youl Kim, Chang Hwan Seo, and Bo Young Hur. "A Study on Al-Mg Alloy Foams by Melt Foaming Method." Solid State Phenomena 124-126 (June 2007): 1841–44. http://dx.doi.org/10.4028/www.scientific.net/ssp.124-126.1841.

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Al-Mg alloy foams were synthesized via conventional melt foaming method. Ca and TiH2 were introduced into molten Al-Mg alloys with different magnesium contents. The macrostructures of resultant alloy foams were analyzed and correlated with compressive properties estimated by compression test. It is shown that the pore structures observed in alloy foams degraded with increasing Mg contents. This tendency was shown to be consistent with compressive characteristics of corresponding alloy foams. In detail, plateau strength was high for Al-1wt%Mg alloy foams, exhibiting a gradual decrease in platea
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15

Yang, Dong-Hui, Yang Shang-Run, Wang Hui, et al. "Compressive properties of cellular Mg foams fabricated by melt-foaming method." Materials Science and Engineering: A 527, no. 21-22 (2010): 5405–9. http://dx.doi.org/10.1016/j.msea.2010.05.017.

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16

Yang, Dong-hui, Jian-qing Chen, Lei Wang, Jing-hua Jiang, and Ai-bin Ma. "Fabrication of Al foam without thickening process through melt-foaming method." Journal of Iron and Steel Research International 25, no. 1 (2018): 90–98. http://dx.doi.org/10.1007/s42243-017-0011-1.

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17

Poot Manzanilla, Alberto Jesús, Alejandro Cruz Ramírez, Eduardo Colin García, José Antonio Romero Serrano, Ricardo Gerardo Sánchez Alvarado, and Miguel Ángel Suárez Rosales. "Production of Refined and Modified Closed-Cell Aluminum Foams by Melt-Foaming Method." Metals 13, no. 3 (2023): 622. http://dx.doi.org/10.3390/met13030622.

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Closed-cell A356 aluminum alloy foams refined and modified were successfully fabricated by using barite and calcium carbonate as thickening and foaming agents, respectively. A melt treatment consisting of adding master alloys of Al-5Ti-1B and Al-10Sr for refining the dendritic microstructure and modifying the primary eutectic silicon, respectively, were included in the foaming process. The microstructure and mechanical properties of the foams manufactured were analyzed and compared with foams produced without the refining and modifying treatments. The secondary dendritic arm spacing (SDAS) was
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18

Hu, Lei, Yanxiang Li, Xu Zhou, and Guangzhao Yuan. "Characterization of as-cast microstructure of aluminum foams by melt foaming method." Materials Letters 308 (February 2022): 131112. http://dx.doi.org/10.1016/j.matlet.2021.131112.

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19

MATSUMOTO, Takashi, Yasuhiro KAKINUMA, Ryo KOIKE, and Masaki KONDO. "Fabrication of Porous Metal in Directed Energy Deposition Applying Melt-foaming Method." Proceedings of The Manufacturing & Machine Tool Conference 2018.12 (2018): C12. http://dx.doi.org/10.1299/jsmemmt.2018.12.c12.

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20

Yang, Donghui, Shangrun Yang, Aibin Ma, Jinghua Jiang, Dinglie Wang, and Hui Wang. "Fabrication and compressive properties of cellular Mg foam via melt foaming method." Procedia Engineering 27 (2012): 1248–56. http://dx.doi.org/10.1016/j.proeng.2011.12.579.

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21

CHENG, YING, YANXIANG LI, XIANG CHEN, TONG SHI, ZHIYONG LIU, and NINGZHEN WANG. "Fabrication of Aluminum Foams with Small Pore Size by Melt Foaming Method." Metallurgical and Materials Transactions B 48, no. 2 (2017): 754–62. http://dx.doi.org/10.1007/s11663-016-0815-6.

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22

Yao, Shun, Yichong Chen, Yijie Ling, Dongdong Hu, Zhenhao Xi, and Ling Zhao. "Analysis of Bubble Growth in Supercritical CO2 Extrusion Foaming Polyethylene Terephthalate Process Based on Dynamic Flow Simulation." Polymers 13, no. 16 (2021): 2799. http://dx.doi.org/10.3390/polym13162799.

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Bubble growth in the polymer extrusion foaming process occurs under a dynamic melt flow. For non-Newtonian fluids, this work successfully coupled the dynamic melt flow simulation with the bubble growth model to realize bubble growth predictions in an extrusion flow. The initial thermophysical properties and dynamic rheological property distribution at the cross section of the die exit were calculated based on the finite element method. It was found that dynamic rheological properties provided a necessary solution for predicting bubble growth during the supercritical CO2 polyethylene terephthal
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23

Schaible, Tobias, and Christian Bonten. "A Novel In-Line Measurement and Analysis Method of Bubble Growth-Dependent Strain and Deformation Rates during Foaming." Polymers 16, no. 2 (2024): 277. http://dx.doi.org/10.3390/polym16020277.

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Bubble growth processes are highly influenced by the elongational viscosity of the blowing agent-loaded polymer melt. Therefore, the elongational viscosity is an important parameter for the development of new polymers for foaming applications, as well as for the prediction of bubble growth processes. Thus, knowledge of the initial expansion and deformation behavior in dependency on the polymer, the blowing agent concentration, and the process conditions is necessary. This study presents a novel method for the in-line observation and analysis of the initial expansion and deformation behavior wi
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24

Sharma, Shyam, Anurag Joshi, and Yogendra Rajpoot. "A systematic review of processing techniques for cellular metallic foam production." Metal Working and Material Science 25, no. 4 (2023): 22–35. http://dx.doi.org/10.17212/1994-6309-2023-25.4-22-35.

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Introduction. The paper presents a comprehensive overview of the manufacturing methods, materials, properties, and challenges associated with cellular metallic foams, primarily focusing on aluminum and titanium-based foams. Cellular metallic foams are gaining interest due to its unique combination of low density, high stiffness, and enhanced energy absorption capabilities. Cellular metallic foam is renowned for its special combinations of physical and mechanical characteristics, containing their increased stiffness, specific strength at high temperatures, light weight, and good energy absorpti
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25

Zeng, Hao Hua, and Xiao Dan Wu. "Investigation of Initial Bubbles of CO2 Injected into Polymer Melt." Advanced Materials Research 311-313 (August 2011): 2127–31. http://dx.doi.org/10.4028/www.scientific.net/amr.311-313.2127.

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Continuous extrusion foaming of CO2gas is an efficient method to produce microcellular. The CO2concentration in polymer melt is related to initial bubble morphology. Using video recording in this paper bubble interfacial morphology was studied when the gas was injected into polymer melt . The process of single bubble formation in the static and dynamic polymer melt includes three stages. Screw was more effective for gas breaking up and separating. When mixed in screw channel, and blent in the mixing segment, the dispersion, and diffusion rate of gas into polymer melt were increased largely.
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26

Zhang, Yun, Chunling Xin, Zeming Wang, Waqas Mughal, and Yadong He. "The foaming performance evaluation of fibrillated polytetrafluoroethylene and isotactic polypropylene blends." Cellular Polymers 38, no. 3-4 (2019): 86–107. http://dx.doi.org/10.1177/0262489319846785.

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Polypropylene (PP) foamed products have the advantages of heat and chemical resistance, but it is difficult to foam without modified PP. Traditionally, researchers have used chemical modification to increase the melt strength to improve the foaming properties of PP. In this article, we designed four kinds of screw combinations, and five regions are selected for sampling. The polytetrafluoroethylene (PTFE) and isotactic polypropylene (iPP) were blended by one-step fiber forming method, and then we tested the rheological properties and foaming properties. It is found that the rheological propert
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27

Daoud, Atef, M. T. Abou El-Khair, Fatma Firouz, Ahmed Lotfy, and Essam Ahmed. "Microstructure Aspects of 7075 Al-SiO2 Composite Foams Produced by Direct Melt Foaming Method." Key Engineering Materials 835 (March 2020): 7–12. http://dx.doi.org/10.4028/www.scientific.net/kem.835.7.

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Direct melt foaming method was used to fabricate 7075 Al-SiO2 composite foams from recycled beverage aluminum cans and SiO2 waste particles. The microstructures of the produced composite foams revealed typical characteristic features of the conventional foams, where large dark areas (pores), curved cell walls, cell edges, nodes on the cell edges, cell walls and plateau regions were observed. The microstructures of the composite foams showed fine and irregular shape of SiO2 particles, which were uniformly distributed in the cell wall and plateau region of composite foams. The grain size of α-Al
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28

Jeong, M. J., Chang Hwan Seo, Yeong Hwan Song, K. J. Kang, and Bo Young Hur. "Effect of Different Upper Side Types of Plaster Molds on the Pore Formation of Al Foams via Upward Foaming Method." Materials Science Forum 569 (January 2008): 269–72. http://dx.doi.org/10.4028/www.scientific.net/msf.569.269.

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Fabrication of Aluminum foam with near net shape has been investigated by powder metallurgy method and conventional pouring method. PM method is good for fabrication of near net shape foam, but it needs high cost compared with pouring method. More cost-effective methods are needed to make near net shape al foam to be applied various field. Therefore, novel method for fabrication Al foam was researched in this paper. In order to prepare near shape Al foams with homogeneous pore structures, the so-called upward foaming method was designed and applied. By using this method, two kinds of molds wer
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29

Kweon, Mu Sung, Mahmoud Embabi, Maksim E. Shivokhin, et al. "Tuning High and Low Temperature Foaming Behavior of Linear and Long-Chain Branched Polypropylene via Partial and Complete Melting." Polymers 14, no. 1 (2021): 44. http://dx.doi.org/10.3390/polym14010044.

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While existing foam studies have identified processing parameters, such as high-pressure drop rate, and engineering measures, such as high melt strength, as key factors for improving foamability, there is a conspicuous absence of studies that directly relate foamability to material properties obtained from fundamental characterization. To bridge this gap, this work presents batch foaming studies on one linear and two long-chain branched polypropylene (PP) resins to investigate how foamability is affected by partial melting (Method 1) and complete melting followed by undercooling (Method 2). At
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Su, Bei, Ying-Guo Zhou, Bin-Bin Dong, and Cao Yan. "Effect of Compatibility on the Foaming Behavior of Injection Molded Polypropylene and Polycarbonate Blend Parts." Polymers 11, no. 2 (2019): 300. http://dx.doi.org/10.3390/polym11020300.

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To improve the foaming behavior of a common linear polypropylene (PP) resin, polycarbonate (PC) was blended with PP, and three different grafted polymers were used as the compatibilizers. The solid and foamed samples of the PP/PC 3:1 blend with different compatibilizers were first fabricated by melt extrusion followed by injection molding (IM) with and without a blowing agent. The mechanical properties, thermal features, morphological structure, and relative rheological characterizations of these samples were studied using a tensile test, dynamic mechanical analyzer (DMA), scanning electron mi
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31

Lin, Hao, Hong Jie Luo, Wei Sun, and Guang Chun Yao. "Influence of Additives on Preparation of Aluminum Foam." Advanced Materials Research 785-786 (September 2013): 91–96. http://dx.doi.org/10.4028/www.scientific.net/amr.785-786.91.

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Aluminum foam was fabricated by using powder compact metallurgy method. The variation of magnesium particle as the metal additive during sintering was investigated. The addition of SiC particles on the morphology of the foams was discussed. The results revealed that for the foamable precursor with magnesium powders (1wt.%) added, the diffusion boundary between magnesium and the matrix could be increased with extending the sintering time. It was thought that the viscosity of melt increased by adding SiC particles so that the coalescence among the pores during foaming was relieved. As a result,
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32

Yang, Xian Feng, Zhi Peng Xie, and Lin Lin Wang. "Fabrication of Porous Zirconia Ceramics by Injection Molding Method." Key Engineering Materials 368-372 (February 2008): 758–61. http://dx.doi.org/10.4028/www.scientific.net/kem.368-372.758.

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An innovative processing route for fabricating porous zirconia ceramics has been developed based on traditional injection molding method. Azodicarbonamide (AC) was used as the foaming agents and mixed with the zirconia powder and conventional binders (polypropylene, ethylene/vinyl acetate, paraffin wax and stearic acid). There were three stages in the foaming course: (1) Small bubbles nucleated when AC decomposed into N2 and CO in the barrel. (2) Viscosity and pressure drop led to the growth of the bubbles when the melt feedstock was injected into the die cavity. (3) The porous structure was k
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33

Zhao, Chenglin, Chunmin Wang, Zichen Xia, Congcong Jiang, Yiran Dong, and Zihao Lan. "Effect of Various Foaming Agents on Ceramic Foam from Solid Waste." Crystals 15, no. 1 (2024): 32. https://doi.org/10.3390/cryst15010032.

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Due to the significant amount of solid waste generated annually in China, the rational use of these wastes has become increasingly important. The production of foam ceramics is considered an effective method for the large-scale utilization of such solid waste. In this study, granite sawing mud was selected as the raw material, with SiC and MnO2 serving as foaming agent to prepare foam ceramics. The foaming behavior of sintered samples using different foaming agent was investigated to determine the most suitable type and amount of foaming agent for obtaining foam ceramics with excellent pore st
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34

Ekariadi, Ikhsan, Yeni Muriani Zulaida, and Suryana Suryana. "PENGARUH PENAMBAHAN CACO3 DARI LIMBAH KULIT TELUR DAN WAKTU PENGADUKAN PADA PEMBUATAN ALUMINIUM FOAM MENGGUNAKAN METODE MELT ROUTE." Jurnal Rekayasa Mesin 14, no. 2 (2023): 409–20. http://dx.doi.org/10.21776/jrm.v14i2.1192.

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Aluminum is a lightweight material that has good corrosion resistance and electrical conductivity. It can be used for making aluminum foam. One of the methods for making aluminum foam is the melt route method. Making aluminum foam using the melt route process, is called melting aluminum metal, adding foaming agent, and stirring. This study aims to determine the effect of adding CaCO3 from eggshells and stirring time on the foaming ability of aluminum foam. The characteristics that will be observed include the type of aluminum foam, height, pore size, density, porosity, and compressive strength
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35

Li, Gang, Yanpei Fei, Tairong Kuang, et al. "The Injected Foaming Study of Polypropylene/Multiwall Carbon Nanotube Composite with In Situ Fibrillation Reinforcement." Polymers 14, no. 24 (2022): 5411. http://dx.doi.org/10.3390/polym14245411.

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This paper explored the injection foaming process of in situ fibrillation reinforced polypropylene composites. Using polypropylene (PP) as the continuous phase, polytetrafluoroethylene (PTFE) as the dispersed phase, multi–wall carbon nanotubes (MWCNTs) as the conductive filler, and PP grafted with maleic anhydride (PP–g–MA) as the compatibilizer, a MWCNTs/PP–g–MA masterbatch was prepared by using a solution blending method. Then, a lightweight, conductive PP/PTFE/MWCNTs composite foam was prepared by means of extruder granulation and supercritical nitrogen (ScN2) injection foaming. The composi
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36

Du, Jun-Wei, Tian-Tian Zhou, Rong Zhang, and Sheng-Fei Hu. "Influence of TPU/EVA Phase Morphology Evolution on Supercritical Carbon Dioxide Extrusion Foaming." Polymers 15, no. 14 (2023): 3134. http://dx.doi.org/10.3390/polym15143134.

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Ethylene-vinyl acetate copolymer (EVA) was added at different contents to the thermoplastic polyurethane (TPU) matrix to form a non-compatible blending system, and foaming materials with high pore density were prepared using the supercritical carbon dioxide extrusion method. The influence of the phase morphology and crystal morphology of the TPU/EVA blend on its foaming behavior was studied. The results show that EVA changed the phase morphology and crystal morphology of the blends, leading to the improved melt viscosity and crystallinity of the blend system. At the same time, interfacial nucl
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37

Surace, R., L. A. C. De Filippis, E. Niini, A. D. Ludovico, and J. Orkas. "Morphological Investigation of Foamed Aluminum Parts Produced by Melt Gas Injection." Advances in Materials Science and Engineering 2009 (2009): 1–9. http://dx.doi.org/10.1155/2009/506024.

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Porous metal materials are a new class of materials with low densities, large specific surface, and novel physical and mechanical properties. Their applications are extremely varied: for light weight structural components, for filters and electrodes, and for shock or sound absorbing products. Recently, interesting foaming technology developments have proposed metallic foams as a valid commercial chance; foam manufacturing techniques include solid, liquid, or vapor state methods. The foams presented in this study are produced by Melt Gas Injection (MGI) process starting from melt aluminum. The
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38

MENG, QING-YUN, and DA-MING WU. "OSCILLATION PROCESS OF BUBBLE IN POLYMERS." International Journal of Modern Physics B 20, no. 18 (2006): 2517–25. http://dx.doi.org/10.1142/s0217979206034856.

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A method of dispersing nanogranules in polymer utilizing the stretching, compression, and shearing effects induced by bubble inflation or oscillation in a polymer melt undergoing foaming is reported. It can be known from theoretical calculation that the bubble inflation is very fast (about μs). The other result of theoretical calculation is that the bubble can oscillate when appearing appropriate condition in polymer. The successful dispersion of nanogranules in a polymer melt by bubble inflation has been shown by experiment. Comparison of a theoretical analysis of the dispersion effect is giv
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Park, Soo Han, Hwan Goo Seong, Yeong Hwan Song, Chang Hwan Seo, Zulkifli, and Bo Young Hur. "Influence of Particles on Cell Structure of Al-Mg Alloys Foamed by Melt Foaming Method." Materials Science Forum 544-545 (May 2007): 363–66. http://dx.doi.org/10.4028/www.scientific.net/msf.544-545.363.

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Al-Mg alloy foams containing different Mg contents were synthesized via a conventional melt foaming method. The surface structures of pores formed in resultant foamed alloys was characterized by scanning electron microscopy and x-ray diffractometer. It was found that the pore structures were deteriorated with increasing Mg contents, while the percent porosities did not vary with increasing Mg contents, about 90% and 3~5 mm in pore size. The detailed microstructural examination conducted on increasing Mg containing alloy foams revealed presence of various oxide particles on the surface of indiv
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40

Zhang, Geng, Hua Chen, Xiyuan Jin, Fan Zhang, and Rongchang Zhou. "Study on Laser Selective Curing Additive Manufacturing of Foamed Structural Ceramics." Journal of Physics: Conference Series 2501, no. 1 (2023): 012001. http://dx.doi.org/10.1088/1742-6596/2501/1/012001.

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Abstract An additive manufacturing method for ceramic materials with internally formed foaming structure was proposed in this paper with the adoption of ceramic powder and sodium silicate binder to prepare sizing agent. The forming process on each layer consists of three basic processes, including spreading, freezing and laser scanning. Foaming structure arises due to the foaming effect of the frozen sodium silicate caused by laser gasification. After 3D printing, the support material in frozen state will be removed when it has been melt in water. Then finally the green ceramic parts internall
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41

Yang, Dong Hui, Sang Youl Kim, and Bo Young Hur. "A Study on Kinetics Parameters of Titanium Hydride Powder from Its TPD Spectrum for Metal Foam." Materials Science Forum 534-536 (January 2007): 937–40. http://dx.doi.org/10.4028/www.scientific.net/msf.534-536.937.

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In this paper, the whole temperature programmed decomposition (TPD) spectrum of titanium hydride was acquired by the special designed set-up. After separating and simulating the TPD spectrum by using Spectrum Superposition Method (SSM), Consulting Table Method (CTM) and differential spectrum technique, the kinetics parameters of titanium hydride and corresponding equations were obtained. Using these kinetics equations, the fabrication parameters of Al alloy foam can be determined and foaming process of Al alloy melt can be predicted.
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42

Vasfpour, Ramin, and Seyed Mohammad H. Mirbagheri. "Investigating Alumina-Silicate Bauxite and Phenol-Formaldehyde Resin Embedded TiH2 as Foaming Agents for Producing A356 Foam." Metals 12, no. 12 (2022): 2105. http://dx.doi.org/10.3390/met12122105.

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The melt foaming process has become the most widely used method in closed-cell aluminum foam manufacturing in large dimensions. This process creates pores by adding a foaming agent to the molten metal. Therefore, selecting appropriate foaming agents is vital, and it controls pore sizes and their distribution in producing a homogeneous foam. In the current research, as cost-effective foaming agents, the Bauxite and Phenol-formaldehyde resin (PFR) embedded TiH2 were successfully produced and then investigated by SEM and EDX analysis. It can be concluded that in the presence of the Bauxite cerami
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43

Dimitrova, Rositza, Tatiana Simeonova, Boyko Krastev, Angel Velikov, Veselin Petkov, and Valentin Manolov. "Al and A356 Alloy Foam Castings Modified with Low Concentrations of Nano-Sized Particles: Structural Study and Compressive Strength Tests." Metals 14, no. 5 (2024): 542. http://dx.doi.org/10.3390/met14050542.

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Aluminum and A356 alloy foam castings are produced using a melt-foaming method. Prior to foaming, the melt is modified with nano-sized particles (SiC, TiN, or Al2O3). The nano-sized particles are mixed with micro-sized Al particles, which are ultrasonically treated and hot-extruded. Thus, the so-called “modifying nano-composition” is obtained. The resulting compositions are introduced into the melt of the Al foam at the following mass concentrations of nanoparticles: SiC: 0.038 wt. %; TiN: 0.045 wt. %; and Al2O3: 0.046 wt. %. For the A356 foam, we use the following concentrations: SiC: 0.039 w
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44

Wei, Li, and Yu Sun. "Study on Bubble's Stability in Process of Preparing Foam Aluminum by Powder Metallurgy Method." Advanced Materials Research 146-147 (October 2010): 370–73. http://dx.doi.org/10.4028/www.scientific.net/amr.146-147.370.

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In this paper, the bubble’s stability is studied in the process of preparing foam aluminum by powder metallurgy. In this work, carborundum particles, soot powder and carbon fiber are added into pure aluminum powder, respectively. The microstructure of cell wall of foam aluminum, the viscosity and surface tension of melt is investigated. It is discussed the bubble stability which is controlled through adding SiC particles, soot powder and carbon fiber, and the mechanism of bubble’s stability is analyzed. The experiment results showed that the homogeneity of bubble holes of foam aluminum is bett
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Xue, Shuaiwei, Pin Jia, Qian Ren, Xincai Liu, Richard E. Lee, and Wentao Zhai. "Improved expansion ratio and heat resistance of microcellular poly(L-lactide) foam via in-situ formation of stereocomplex crystallites." Journal of Cellular Plastics 54, no. 1 (2016): 103–19. http://dx.doi.org/10.1177/0021955x16670587.

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It is critical to broaden the applications of poly(L-lactic acid) foams by improving heat resistance properties. The stereocomplex crystallites that are formed by melt blending of poly(L-lactic acid)/polylactide possess high melting point of about 220℃ and thus exhibit high heat resistance; therefore, the introduction of stereocomplex crystallites tends to improve the thermal stability of poly(lactic acid) foam. Unfortunately, using the solid-state foaming method, it was found that the expansion ratio of the obtained poly(lactic acid) foams was compromised with the value of 1.7 times once the
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Wen, Na, Tao Liu, Bin Xiang, Yajie Lei, and Shikai Luo. "Preparation and characterization of microcellular injection molded foams from high-performance blends based on PPS-modified PPBESK." High Performance Polymers 30, no. 4 (2017): 480–88. http://dx.doi.org/10.1177/0954008317705432.

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Obtaining foams of poly-containing biphenyl moieties (phthalazinone ether sulfone ketone; PPBESK) by applying the microcellular injection molding method is very difficult because of the high melt viscosity of the materials used. To overcome this limitation, polyphenylene sulfide (PPS) was used to improve the rheological properties of PPBESK. PPBESK/PPS blends of different proportions were prepared using the melt mixing method. The rheological behavior, phase behavior, interfacial tension, and mechanical properties of the blends were then investigated. The results clearly indicate that PPS can
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Liu, Shih-Jung, and Ching-Hsiung Yang. "Rotational Moulding of Expanded Polyethylene by Pellets." Cellular Polymers 19, no. 4 (2000): 256–70. https://doi.org/10.1177/026248930001900402.

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An innovative method of rotational moulding expanded polyethylene by pellets was reported. Experiments were carried out in a laboratory scale uniaxial machine, which was capable of measuring in-mould air temperature in the cycle. The polymeric material used was linear low-density polyethylene. The foaming material used is endo-thermal chemical blowing agent. Before moulding, the polyethylene material and the chemical-foaming agent were first melt blended by a single-screw extruder and were then cut into pellets of 2-3 mm in diameter. Pellets were then dry-blended with pure LLDPE powder by a mi
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48

Dimitrova, Rositza, Tatiana Simeonova, Boyko Krastev, Angel Velikov, and Valentin Manolov. "MICROSTRUCTURE AND MECHANICAL PROPERTIES OF ALUMINUM AND A356 ALLOY FOAMS CRYSTALLIZED IN A THIN-WALLED WATER-COOLED MOLD." Journal of Chemical Technology and Metallurgy 59, no. 3 (2024): 683–91. http://dx.doi.org/10.59957/jctm.v59.i3.2024.23.

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Cylindrical foam castings of Al and A356 alloy were produced using a melt foaming method with the introduction of Ca and TiH2. Foam crystallization takes place in a cooled thin-walled metal mold. Samples cut off from the foam castings are investigated by X-ray tomography, quantitative data for porosity, average pores diameter and average cells wall thickness are obtained. It is found that the porosity is mainly open. Same samples are tested in quasi-static mode and the compressive strength is determined. The influence of porosity on compressive strength is analyzed.
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Maske, Deepti Nilesh, Priyanka Chandrakant Sangar, Ashish Sanjay Bhongale, Rasika Purushottam Devale, and Ankita Dattatray Gaikwad. "Research On Formulation and Evaluation of Poly-Herbal Soap With Anti-Bacterial Activity." AMERICAN JOURNAL OF PHARMACY AND HEALTH RESEARCH 11, no. 03 (2023): 26–36. https://doi.org/10.5281/zenodo.7807859.

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ABSTRACT The ultimate aim of present work was to prepare formulation of poly-herbal soap from extract of tulsi leaves, aloe-vera leaves, vitamin E capsules and honey using glycerine soap base by melt and pour method. The formulation was evaluated for physicochemical parameters like appearance, pH, sensitivity test, foaming test, stability test. All evaluation parameters results were positive and comply with standard values. Therefore, these plant materials can be used in the preparation of herbal soap on commercial scale for acne treatment. <strong>Keywords</strong>: Polyherbal Soap, plant mat
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Huang, Li, Dong Hui Yang, Hui Wang, Feng Ye, and Zhao Ping Lu. "Effects of Scandium on Corrosion Resistance and Mechanical Properties of Cellular Al-Based Foams." Materials Science Forum 747-748 (February 2013): 93–100. http://dx.doi.org/10.4028/www.scientific.net/msf.747-748.93.

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Cellular Al-0.24wt.%Sc and Al-0.41wt.%Sc foams with a porosity ranging from 37 to 86% were successfully fabricated via the melt-foaming method with the calcium particles as the thickening agent and titanium hydride as blowing agent. The corrosion rate increased with the increasing of porosity for the cellular Al-0.24wt.%Sc, Al-0.41wt.%Sc and Al foams. Large size Al3Sc precipitates can accelerate the corrosion of the Al foams. However, T6-treatments could improve the corrosion resistance significantly. With T6-treatments, 0.24 wt.%Sc addition to Al foams exhibited unconspicuous decrease in the
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