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Journal articles on the topic 'Unsaturated polyester resin'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Mustafayev, A. M., Y. N. Gahramanli, B. N. Babanly, and R. I. Ismailova. "SYNTHESIS AND PROPERTIES OF BROMINE-CONTAINING BICYCLIC UNSATURATED POLYESTERS." Azerbaijan Chemical Journal, no. 4 (November 14, 2023): 63–70. http://dx.doi.org/10.32737/0005-2531-2023-4-63-70.

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A method for obtaining bromine-containing bicyclic unsaturated polyesters by the interaction of 1,4,5,6,7,7-hexabromobicyclo-[2,2,1]-hept-5-ene-2,3-dicarboxylic acid anhydride, propanetriol and maleic anhydride was developed. It was found that unsaturated polyethers synthesized by a two-step method have a higher molecular weight (3130), density (1.461 g/cm3), viscosity (105 St) and ether number (400 ml KOH/g). It was found that the compositions of epoxy resin ED-20 with unsaturated polyether obtained by method III possess higher tensile strength (90 MPa), higher relative elongation (9%), highe

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2

Alikin, M. B., D. A. Panfilov, N. A. Lavrov, and I. M. Dvorko. "Obtaining unsaturated polyester resins and materials based on them using recycled polyethylene terephthalate." Plasticheskie massy, no. 9-10 (November 2, 2019): 20–22. http://dx.doi.org/10.35164/0554-2901-2019-9-10-20-22.

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A technique has been developed for producing an unsaturated polyester resin by transesterifying the product of glycolysis of secondary polyethylene terephthalate using maleic and phthalic anhydride. The curing process was studied, it was found that the unsaturated polyester resin was cured by the action of oligoether acrylate (TGM-3), peroxide compound (methyl ethyl ketone peroxide) and accelerator (manganese hydroxide divalent, acetylacetone, cobalt stearate). The physic-mechanical characteristics of polymeric materials based on unsaturated polyester resin, the analysis of which indicates a h

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3

Xie, Xiang Li, Lin Jiang Wang, and Guo Wei Zhang. "Preparation and Flame Retardancy of Unsaturated Polyester Resin Containing P-Toluenesulfonate-Pillared Layered Double Hydroxide." Advanced Materials Research 399-401 (November 2011): 1372–75. http://dx.doi.org/10.4028/www.scientific.net/amr.399-401.1372.

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The p-toluene sulfonate- pillared layered double hydroxide(PTS-LDH) was synthesized by co-precipitation method, unsaturated polyester resin/ PTS-LDH composites were prepared by solution blending and solidifying. The X-ray diffraction was used to characterize the structure of the composites. The thermal stability and fire properties of composites have been studied by thermo- gravimetric analysis, limit oxygen index and UL94 burning test. The results show that the interlayer space of original LDH was 0.775nm, which was increased to 1.73nm for PTS-LDH and 2.077 nm for unsaturated polyester resin/

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4

Zhang, Hong Yan, Xi Shi Tai, and Hai Quan Wang. "Preparation and Characterization of Unsaturated Polyester/Graphite Nanosheets Composites under Electric Field." Applied Mechanics and Materials 182-183 (June 2012): 33–36. http://dx.doi.org/10.4028/www.scientific.net/amm.182-183.33.

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As a conductive fillers, graphite nanosheets can be induced by the AC electric field in unsaturated polyester resin and then prepared oriented unsaturated polyester resin/graphite nanosheets composite. We investigate the preparation, configuration and capability of the unsaturated resin/ graphite nanosheets conductive composites and the oriented theory of the graphite nanosheets induced in the electric field. The measures and observation of scanning electron microscopy(SEM), X-ray diffraction(XRD), electric current have shown that the graphite nanosheets are oriented by electric field which we

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5

Zhang, Hong Yan, Hai Quan Wang, and Su Qing Wang. "Structure Characterization of Unsaturated Polyester/Graphite Nanosheet Composite under Electric Field." Advanced Materials Research 455-456 (January 2012): 524–27. http://dx.doi.org/10.4028/www.scientific.net/amr.455-456.524.

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As conductive fillers, graphite nanosheets can be induced by the AC electric field in unsaturated polyester resin and then prepared oriented unsaturated polyester resin/graphite nanosheets composite. we investigate the preparation、configuration and capability of the unsaturated resin/graphite nanosheets conductive composites and the oriented theory of the graphite nanosheets induced in the electric field. The measures and observation of scanning electron microscopy (SEM), X-ray diffraction (XRD), electric current have shown that the graphite nanosheets are oriented by electric field which were

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6

Feng, Lifei, Ran Li, Han Yang, Shanwei Chen, and Wenbin Yang. "The Hyperbranched Polyester Reinforced Unsaturated Polyester Resin." Polymers 14, no. 6 (2022): 1127. http://dx.doi.org/10.3390/polym14061127.

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We report a method of reinforcing and toughening unsaturated polyester resin (UPR) with a kind of hyperbranched polyester (HBP-1). Polyethylene glycol with different molecular weight was used as the core molecule of the preparation reaction, and the reaction product of phthalic anhydride and glycerol was used as the branching unit. The esterification reaction of polycondensation occurred, and then the hydroxyl-terminated hyperbranched polyester was prepared. The reaction product of maleic anhydride and isooctanol was added to the prepared hydroxyl-terminated hyperbranched polyester for esterif

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7

Mustapha, Siti Noor Hidayah Binti, Muhammad Syafiq Asyraf Bin Azhman, Shamsul Zakaria, Rasidi Roslan, Rohani Binti Mustapha, and Lee Tee Chuan. "Mechanical Properties of Graphite Filled Unsaturated Polyester and Unsaturated Polyester/Palm Oil Blend Resin." Materials Science Forum 981 (March 2020): 150–55. http://dx.doi.org/10.4028/www.scientific.net/msf.981.150.

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This research aim to investigate the effect of graphite loadings in unsaturated polyester (UPE) / acrylated epoxidized palm oil (AEPO) blend resin. The modification of epoxidized palm oil (EPO) to AEPO was carried out using acrylation process and further blended with synthetic UPE resin. Graphite powder was added at 0.03, 0.05 and 0.1 phr into the UPE/AEPO blend resin and cured in an oven at 100 °C and 160 °C. FTIR spectrums showed the disappearance of oxirane ring and existence of carbon double bond indicating successful of AEPO synthesis process. Tensile and Izod impact test revealed that, g

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8

Chowdhury, A., S. K. Singh, and P. Anthony. "Structural and Thermal Characterization of Castor Oil Based Unsaturated Polyester Resin." Asian Journal of Chemistry 32, no. 7 (2020): 1763–67. http://dx.doi.org/10.14233/ajchem.2020.22689.

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In the present study, unsaturated polyester resins based on castor oil was synthesized. Structure elucidation of the synthesized unsaturated polyester resin was done by FTIR and 1H NMR spectroscopy. Thermogravimetric analysis was used to evaluate the thermal stability of cured unsaturated polyester resin. Thermogram plot was further utilized to calculate various other parameters such as statistic heat-resistant index (Ts) and the integral procedural decomposition temperature (IPDT). Comparable properties with respect to commercial resins were reported for the synthesized polymers

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9

Farsane, Mohamed, Khalid Saadouni, Soufia Lhasnaoui, et al. "Effect of Recycled Ceramic Waste Content on the Properties of Unsaturated Polyester Resin." Materiale Plastice 58, no. 3 (2021): 174–85. http://dx.doi.org/10.37358/mp.21.3.5515.

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In this study, the properties of unsaturated polyester resin were studied in the presence of recycled ceramic waste particles. Herein, composites were created that contained 28.5-50 wt% porcelain particles (particle size [180 �m). High filler contents increased the gel time and decreased the exotherm temperature of unsaturated polyester resin during curing. The obtained results showed that physical parameters, such as the resin density and porosity, increased as the filler content increased. In addition, the X-ray diffraction results indicated that the produced samples were a combination of ce

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10

Farsane, Mohamed, Khalid Saadouni, Soufia Lhasnaoui, et al. "Effect of Recycled Ceramic Waste Content on the Properties of Unsaturated Polyester Resin." Materiale Plastice 58, no. 3 (2021): 174–85. http://dx.doi.org/10.37358/mp.21.3.5515.

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In this study, the properties of unsaturated polyester resin were studied in the presence of recycled ceramic waste particles. Herein, composites were created that contained 28.5-50 wt% porcelain particles (particle size [180 �m). High filler contents increased the gel time and decreased the exotherm temperature of unsaturated polyester resin during curing. The obtained results showed that physical parameters, such as the resin density and porosity, increased as the filler content increased. In addition, the X-ray diffraction results indicated that the produced samples were a combination of ce

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11

Benny Cherian, A., and Eby Thomas Thachil. "Toughening Studies of an Unsaturated Polyester Resin Using Maleated Elastomers." Progress in Rubber and Plastics Technology 17, no. 4 (2001): 205–24. http://dx.doi.org/10.1177/147776060101700401.

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Unsaturated polyester resins are extensively used in the fibre-reinforced plastic industry. The fracture toughness and impact resistance of rigid unsaturated polyester can be improved by the incorporation of elastomers by physical and chemical methods. In the physical method, two strategies are adopted. In the first, various masticated elastomers are dissolved in styrene and blended with unsaturated polyester resin. In this study, the mechanical properties of cured blends are compared with the unmodified resin and the performance of nitrile rubber is found to be far superior to all other rubbe

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12

Journal, Baghdad Science. "The use of Some Aliphatic Halorgano antimony Compounds as combustion Retarding agents of Unsaturated Polyester and Epoxy Resins." Baghdad Science Journal 7, no. 4 (2010): 1389–94. http://dx.doi.org/10.21123/bsj.7.4.1389-1394.

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Four antimony compounds were used in this inves as additives to retard combustion of unsaturated polyester and epoxy resins, namely: 1. Tetraethyl ammonium tribromoethylantimonates (additive I). 2. Tetraethyl ammonium chlorodibromoethylantimonates (additive II). 3. Tetraethyl ammonium trichloroethylantimonates (additive III). 4. Tetraethyl ammonium bromodichloroethylantimonates (additive IV). The effects of these additives on flammability of unsaturated polyester and epoxy resins have been studied by using sheets of the resins with weight percentages of (0.5,1.0,1.5,2.0,2.5&3.0%) of the ad

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13

Dabagh, Areej Kamal A. AL. "The use of Some Aliphatic Halorgano antimony Compounds as combustion Retarding agents of Unsaturated Polyester and Epoxy Resins." Baghdad Science Journal 7, no. 4 (2010): 1389–94. http://dx.doi.org/10.21123/bsj.2010.7.4.1389-1394.

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Four antimony compounds were used in this inves as additives to retard combustion of unsaturated polyester and epoxy resins, namely: 1. Tetraethyl ammonium tribromoethylantimonates (additive I). 2. Tetraethyl ammonium chlorodibromoethylantimonates (additive II). 3. Tetraethyl ammonium trichloroethylantimonates (additive III). 4. Tetraethyl ammonium bromodichloroethylantimonates (additive IV). The effects of these additives on flammability of unsaturated polyester and epoxy resins have been studied by using sheets of the resins with weight percentages of (0.5,1.0,1.5,2.0,2.5&3.0%) of the ad

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14

Bandyopadhyay, S. "Evaluation of Drilling Performance of Unsaturated Polyester Resin." Asian Journal of Engineering and Applied Technology 2, no. 2 (2013): 29–34. http://dx.doi.org/10.51983/ajeat-2013.2.2.685.

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Unsaturated polyester resin (UPR) has the resistance against boiled water, acid and alkali, and hence, is widely used in corrosive environment and elsewhere, although fracture strength of polymeric materials is generally low relative to metals and ceramics. Despite the fact that polymer components are mostly produced near-net-shape, machining, particularly drilling, is often required to prepare it for assembly. In the present paper, drilling of unsaturated polyester resin is undertaken for the evaluation of machinability of unsaturated polyester resin (UPR). Observation of cutting force requir

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15

Abdullah, Iram. "DSC Cure Kinetics of an Unsaturated Polyester Resin Using Empirical Kinetic Model." Pakistan Journal of Scientific & Industrial Research Series A: Physical Sciences 58, no. 2 (2015): 99–105. http://dx.doi.org/10.52763/pjsir.phys.sci.58.2.2015.99.105.

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In this paper, the kinetics of curing of unsaturated polyester resin initiated with benzoyl peroxide was studied. In case of unsaturated polyester (UP) resin, isothermal test alone could not predict correctly the curing time of UP resin. Therefore, isothermal kinetic analysis through isoconventional adjustment was used to correctly predict the curing time and temperature of UP resin. Isothermal kinetic analysis through isoconversional adjustment indicated that 97% of UP resin cures in 33 min at 120 °C. Curing of UP resin through microwaves was also studied and found that 67% of UP resin cures

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16

Safarov, Baxri, Temirbek Naubeev, Seydabullaev Batirbay Baxitbay O’g’li, and Kobul Hotamov. "ON THE INFLUENCE OF SURFACE-ACTIVE SUBSTANCES ON THE TECHNOLOGICAL INDICATORS OF THE FLASHING PROCESS." American Journal of Applied Science and Technology 03, no. 03 (2023): 5–10. http://dx.doi.org/10.37547/ajast/volume03issue03-02.

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In this work, the results of experimental studies in surfactants on the completeness and rate of water separation in the preparation of colored preparations based on dibutyl phytalate and unsaturated polyester resin HPC 609-21M are obtained. It was found that the water beating intensification process was carried out with unsaturated polyester resin HPC 609-21M.

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17

Naseer, Kanza, Najaf Ali, Waqar Ali Khan, Muhammad Ashraf, Imran Shamshad, and Khurram Shahzad. "Effect of fabric modification and clay loading on mechanical properties of reinforced composites." Journal of the Pakistan Institute of Chemical Engineers 47, no. 1 (2019): 35–44. http://dx.doi.org/10.54693/piche.04714.

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Ethylene terephthalate fabric has been used to strengthen the unsaturated polyester resin. The macroscopic, microscopic and spectroscopic studies of the surface modified polyester fabric, bentonite and unsaturated polyester are comparatively investigated by tensile and flexural testing, scanning electron microscopy (SEM) and x-ray diffraction (XRD). Strong fabric and matrix adhesion is governed by surface modification of polyester fabric with alkali treatment. Compared with neat polyester resin, the tensile strength of chemically modified polyester fabric filled unsaturated polyester composite

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18

Sapuan, S. M., H. S. Aulia, R. A. Ilyas, et al. "Mechanical Properties of Longitudinal Basalt/Woven-Glass-Fiber-reinforced Unsaturated Polyester-Resin Hybrid Composites." Polymers 12, no. 10 (2020): 2211. http://dx.doi.org/10.3390/polym12102211.

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This work represents a study to investigate the mechanical properties of longitudinal basalt/woven-glass-fiber-reinforced unsaturated polyester-resin hybrid composites. The hybridization of basalt and glass fiber enhanced the mechanical properties of hybrid composites. The unsaturated polyester resin (UP), basalt (B) and glass fibers (GF) were fabricated using the hand lay-up method in six formulations (UP, GF, B7.5/G22.5, B15/G15, B22.5/G7.5 and B) to produce the composites, respectively. This study showed that the addition of basalt to glass-fiber-reinforced unsaturated polyester resin incre

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19

Storozhek, G. O., M. B. Alikin, D. A. Panfilov, N. A. Lavrov, and I. M. Dvorko. "Obtaining unsaturated polyester resins using products of recycled polyethylene terephthalate solvolysis." Plasticheskie massy, no. 3 (July 22, 2024): 39–41. http://dx.doi.org/10.35164/0554-2901-2024-03-39-41.

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A technique for obtaining an unsaturated polyester resin based on recycled polyethylene terephthalate has been developed. The process of curing an unsaturated polyester resin under the action of styrene, a peroxide compound (Butanox 50M) and an accelerator (cobalt ortoate) has been studied. The physical and mechanical properties of polymeric materials based on the developed resin have been studied, it was found that their strength depends on the mass fraction of recycled polyethylene terephthalate in the oligoether polyol used in the synthesis.

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20

Ciuca, Ion, Marius Marinel Stanescu, Dumitru Bolcu, and Luminita Florentina Deaconu (Stanescu). "A Study of Some Mechanical and Chemical Properties of Composite Materials Made Up of UPR and ISO/NPG Granules of the Type of Buzi/Perdido Cromate." Revista de Chimie 69, no. 5 (2018): 1045–49. http://dx.doi.org/10.37358/rc.18.5.6258.

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In this work we have measured the mechanical properties for unsaturated polyester resin (UPR) and unsaturated polyester resin mixed with isophthalic resin granules NPG (Neopentyl Glycol) of the type of Buzi/Perdido Chromate. All sets of samples underwent compression testing. We obtained the characteristic curve, the admissible resistance to compression, and the modulus of elasticity for each sample. Moreover, on the basis of FTIR analysis we measured the type of bonds (C-O, C=O, C-C and various bonds in the functional groups) in each polymer.

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21

Storozhek, G. O., M. B. Alikin, D. A. Panfilov, N. A. Lavrov, and I. M. Dvorko. "Obtaining unsaturated polyester resins using recycled polyethylene terephthalate." Plasticheskie massy 1, no. 5-6 (2023): 41–43. http://dx.doi.org/10.35164/0554-2901-2023-5-6-41-43.

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A method for obtaining an unsaturated polyester resin based on recycled polyethylene terephthalate has been developed. The process of curing an unsaturated polyester resin under the action of styrene, a peroxide compound (Butanox 50M) and an accelerator (cobalt stearate and dimethylaniline) has been studied. The physical and mechanical properties of polymeric materials based on the developed resin have been studied. It has been established that their strength depends on the mass fraction of recycled polyethylene terephthalate in the oligoether polyol used in the synthesis.

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22

Farsane, Mohamed, Abdellah Anouar, Souad Chah, and Miloud Bouzziri. "Characterization of Ceramic Waste Filled Unsaturated Polyester Resin." Materiale Plastice 57, no. 3 (2020): 52–60. http://dx.doi.org/10.37358/mp.20.3.5379.

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In this study, the composites of ceramic waste filler polyester were produced with ceramic waste as the filler and unsaturated polyester resin as the matrix. Various weight of filler loads (particle size [180 �m) were used; 0, 28.5, 41 and 50 wt% in view to better understand the effect of filler content on the mechanical, thermal properties and water absorption of the composites. Additionally, Fourier transform infrared spectroscopy was used to characterize the samples, from the findings, it is noticed an increase in the level of porcelain powder decreased the flexural strength and Hardness an

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23

Journal, Baghdad Science. "STUDY OF TEMPERATURE EFFECT ON THE HARDNESS FOR EPOXY RESIN AND UNSATURATED POLYESTER." Baghdad Science Journal 4, no. 4 (2007): 583–88. http://dx.doi.org/10.21123/bsj.4.4.583-588.

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This search aim to measure Hardness for Epoxy resin and for unsaturated Polyester resin as base materials for composite Hybrid and the materials used is Hybrid fiber Carbon-Kevlar. The Hand Lay-up method was used to manufacture plates of Epoxy resin (EP) and unsaturated Polyester EP,UPE backed by Hybrid fiber (Carbon-Kevlar) and with small volume fraction 5,10 and 15 for every there are Layer of fibers (1,2 and 3). The hardness test was count for material EP, UPE resin and there composites and that we notice that the Hardness (HB) decreased with increase of temperatures.

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24

Mohammed, Awatif Adab, Sinaa Ibrahim Hussein, and Inaam Hussein Ali. "STUDY OF TEMPERATURE EFFECT ON THE HARDNESS FOR EPOXY RESIN AND UNSATURATED POLYESTER." Baghdad Science Journal 4, no. 4 (2021): 583–88. http://dx.doi.org/10.21123/bsj.2007.4.4.583-588.

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This search aim to measure Hardness for Epoxy resin and for unsaturated Polyester resin as base materials for composite Hybrid and the materials used is Hybrid fiber Carbon-Kevlar. The Hand Lay-up method was used to manufacture plates of Epoxy resin (EP) and unsaturated Polyester EP,UPE backed by Hybrid fiber (Carbon-Kevlar) and with small volume fraction 5,10 and 15 for every there are Layer of fibers (1,2 and 3). The hardness test was count for material EP, UPE resin and there composites and that we notice that the Hardness (HB) decreased with increase of temperatures.

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25

BALASHOV, M. S., K. A. KIRSHANOV, R. V. TOMS, N. V. SUVOROV, and A. YU GERVALD. "Determination of the quantitative and qualitative composition of unsaturated polyester resins by NMR spectroscopy." Plasticheskie massy 1, no. 1-2 (2022): 28–33. http://dx.doi.org/10.35164/0554-2901-2022-1-2-28-33.

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Qualitative and quantitative composition of unsaturated polyester resin derived from known monomers mixture was investigated by means of NMR spectroscopy. To obtain the most comprehensive data of polyester microstructure 1H, 13C и {1H;1H} COSY NMR spectra were registered. NMR spectroscopy has been proven to be accurate and highly reliable method for composition analysis of unsaturated polyester resins.

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26

Mohammad Nadhum Bahjat Al-Baiati. "The combined action of polyammoniumphosphate and retardants – chlorinated rubber as flame for unsaturated polyester resin." Journal of the College of Basic Education, no. 51 (January 20, 2023): 57–64. http://dx.doi.org/10.35950/cbej.vi51.9570.

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In this investigation, polyammoniumphosphate (PAP) (I) and chlorinated Rubber (CR.) (II) ,were used as flame retardant for Unsaturated polyester resin in the weight ratios of 2,4,6 & 8%, by preparing films of (130×130×3) mm in diameter, Also film of Unsaturated polyester resin with mixture of [50%(PAP)+50%(CR.)] (III) in percentage of 2,4,6 & 8% by weight prepared to test the combined action .Three standard tests used to measure the flame retardation which are :1-ASTM : D-28632-ASTM : D-6353-ASTM : D-3014The results obtained from these tests indicating that , the (CR.), (PAP) and their

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27

Brzozowski, Z. K., E. Szymańska, and M. M. Bratychak. "New epoxy-unsaturated polyester resin copolymers." Reactive and Functional Polymers 33, no. 2-3 (1997): 217–24. http://dx.doi.org/10.1016/s1381-5148(97)00045-x.

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28

Gao, Yang, Pedro romero, Hongliang Zhang, Man Huang, and Feng Lai. "Unsaturated polyester resin concrete: A review." Construction and Building Materials 228 (December 2019): 116709. http://dx.doi.org/10.1016/j.conbuildmat.2019.116709.

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29

Ewa, Kicko-Walczak. "Novel fire retardant unsaturated polyester resin." Makromolekulare Chemie. Macromolecular Symposia 74, no. 1 (1993): 281–82. http://dx.doi.org/10.1002/masy.19930740133.

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30

Wu, Xiong, Bai Jie Zhou, Fan Zhuo Meng, Qian Hu, and Ji Lin Pan. "Influence of Aluminum Hydroxide Particles on the Properties of Polyurethane Based on Unsaturated Polyester." Advanced Materials Research 721 (July 2013): 210–14. http://dx.doi.org/10.4028/www.scientific.net/amr.721.210.

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A polyurethane based on unsaturated polyesters (PUP) was prepared, which can be cured and cross-linking reaction under room temperature. The polyurethane-based resin exhibited excellent endurance to acid and base relative to traditional unsaturated polyester resin. Different content and particle size of aluminum hydroxide particles were added into the PUP to improve the properties of final materials. Experiment results showed that proper content and size of aluminum hydroxide particles can improve the mechanic properties, thermal stability and electrical insulation of PUP materials to some ext

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31

Sun, Jia Ying, Yan Qing Li, Wei Tian, and Cheng Yan Zhu. "Study on the Resin Curing Time and the Mechanical Properties of the Composites." Advanced Materials Research 602-604 (December 2012): 33–36. http://dx.doi.org/10.4028/www.scientific.net/amr.602-604.33.

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In order to study the curing characteristics of common resins including bisphenol-A epoxy vinyl ester resin, phenolic epoxy vinyl ester resin and unsaturated polyester resin, the curing time of three resins was tested using cobalt naphthenate as accelerator and methyl ethyl ketone peroxide as curing agent. The results showed that the resin curing time reduces with the experimental temperature rising; in order to control the curing time at about 25 minutes when the experimental temperature is 23°C, the curing agent adding proportion of bisphenol-A epoxy vinyl ester resin, unsaturated polyester

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32

Fu, Xinjun, Xiaojun Wang, Jinjian Zhu, and Minzhuang Chen. "Long Chopped Glass Fiber Reinforced Low-Density Unsaturated Polyester Resin under Different Initiation." Materials 14, no. 23 (2021): 7307. http://dx.doi.org/10.3390/ma14237307.

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Long chopped glass fiber reinforced low-density unsaturated polyester resin (LCGFR-LDUPR) composite materials with light weight and excellent mechanical properties were prepared. It was proved that long chopped glass fiber, which was in length of 15.0 mm and chopped from ER4800-T718 plied yarn, was suitable for the preparation of LCGFR-LDUPR composite samples. With the coexistence of 1.50 parts per hundred of resin (phr) of methyl ethyl ketone peroxide (MEKP-II) and 0.05 phr of cobalt naphthenate, optimal preparation parameters were obtained, which were 20.00 phr of long chopped glass fiber, 2

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33

Hęclik, Karol, Jerzy Duliban, Barbara Dębska, and Jacek Lubczak. "Analysis of the Possibility and Conditions of Application of Methylene Blue to Determine the Activity of Radicals in Model System with Preaccelerated Cross-Linking of Polyester Resins." International Journal of Analytical Chemistry 2019 (August 1, 2019): 1–8. http://dx.doi.org/10.1155/2019/2879869.

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Unsaturated polyester resins are usually processed using a curing system consisting of initiator and accelerator introduced into the resin. Actually, the producers apply built-in amine accelerators which can be named as preaccelerators. Commonly used preaccelerators for unsaturated resins are tertiary aromatic amines of which incorporation into resin structure may bring better stability. It also causes shorter gelation time of resins because of formation of active RO• radicals that initiate polymerization. Investigated radical reactions are too fast and there is no possibility of freezing it (

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34

Sun, Shuang Shuang, Xian Ce Jiang, and Yong Sheng Ren. "Experimental Study on Damping Properties of Fiber Reinforced Composites with Resin Matrices." Advanced Materials Research 562-564 (August 2012): 393–96. http://dx.doi.org/10.4028/www.scientific.net/amr.562-564.393.

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The damping properties of glass and carbon fiber reinforced composites with epoxy and unsaturated polyester resin matrices were studied experimentally in this paper. It is found that temperature and frequency have significant effects on damping properties of these fiber reinforced resin composites. In the frequency range of 0Hz~30Hz, the damping factors of pure resin materials are higher than those of fiber reinforced resin composites. In the temperature range of -300C~500C, the epoxy resin composite shows the lower damping factors at about 200C, and the damping factors of unsaturated polyeste

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35

Adegboro, Narcillina Nkechi, Muhammed Tijani Isa, and Tajudeen Kolawole Bello. "Mechanical Characterization and Dynamic Mechanical Analysis of Recycled Low Density Polyethylene Filled Unsaturated Polyester Composite." ABUAD Journal of Engineering Research and Development (AJERD) 7, no. 1 (2024): 28–34. http://dx.doi.org/10.53982/ajerd.2024.0701.03-j.

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Unsaturated polyester resin (UPR) is widely used as matrix in composite development; however, it has poor toughness property. To solve this problem, many researchers have used different tougheners to modify the resin, but the use of recycled low-density polyethylene (RLDPE) has not been explored. This work is aimed at modifying unsaturated polyester resin (UPR) with recycled low-density polyethylene (RLDPE) as a toughener and establishing the effects on the mechanical and dynamic mechanical performance of the RLDPE-filled polyester composite. Unsaturated polyester resin was modified with 1.18

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Zhang, Xiaorui, Shuqiang Du, Xue Sun, Hengguang Zhang, Hean Liao, and Jiangfeng Ni. "Synthesis, Characterization of High Toughness Hyperbranched Unsaturated Polyester of Flexible Aliphatic Side Chains." Journal of Nanoelectronics and Optoelectronics 16, no. 9 (2021): 1380–85. http://dx.doi.org/10.1166/jno.2021.3065.

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Here, a new and special unsaturated Hyperbranched polymers (HBP) structure under unsaturation were developed for co-blocking of n-Hexanoic and acroleic acid in terms of making unsaturated resin, vinyl resin and bismaleimide resin to be more toughed by chemically inducing flexible long-chain of aliphatic acid into the crosslinking structure of the copolymerized modification of styrene. Abundant unsaturated double bonds can react with styrene and unsaturated resins to form a network configuration that can interpenetrate exhibiting high toughness and considerable flexible chain segments. In addit

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Rubeš, David, Jaromír Vinklárek, Štěpán Podzimek, and Jan Honzíček. "Bio-based unsaturated polyester resin from post-consumer PET." RSC Advances 14, no. 12 (2024): 8536–47. http://dx.doi.org/10.1039/d3ra08500g.

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Esfahani, Javad Moftakharian, Masoud Esfandeh, and Ali Reza Sabet. "Effect of Nanoclay on Quasi Static Perforation of Thin-walled Polymer Composite Laminates." Polymers and Polymer Composites 20, no. 8 (2012): 737–48. http://dx.doi.org/10.1177/096739111202000809.

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In this study, the penetration and perforation performance of nanoclay reinforced unsaturated polyester resin/fibreglass nanocomposite laminates have been investigated via quasi-static indentation tests using ahemispherical nose indenter. Unsaturated polyester resin (UP) was mixed with 1.5 and 3 wt.% nanoclay using a homogenizer stirrer to prepare a homogeneous mix. UP reinforced nanocomposite was then utilized to manufacture 150 × 150 mm2 laminated composite panels using 400 g/m2 glass fibre woven roving via a hand lay-up process. X-ray diffractometry, transmission electron microscopy analysi

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Zhang, Jian, Xiaojun Wang, and Xinjun Fu. "High Mechanic Enhancement of Chopped Carbon Fiber Reinforced-Low-Density Unsaturated Polyester Resin Composite at Low Preparation Temperature with Facile Polymerization." Materials 14, no. 15 (2021): 4273. http://dx.doi.org/10.3390/ma14154273.

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Chopped carbon fiber-reinforced low-density unsaturated polyester resin (CCFR-LDUPR) composite materials with light weight and high mechanical properties were prepared at low temperature and under the synergistic action of methyl ethyl ketone peroxide (MEKP-II) and cobalt naphthenate. Optimal preparation conditions were obtained through an orthogonal experiment, which were preparation temperature at 58.0 °C, 2.00 parts per hundred of resin (phr) of NH4HCO3, 4.00 phr of chopped carbon fibers (CCFs) in a length of 6.0 mm, 1.25 phr of initiator and 0.08 phr of cobalt naphthenate. CCFR-LDUPR compo

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Nadher Hlail Jaddoa. "Effect of Adding Nanoclay (Hallosite) On the Thermal Properties of Unsaturated Polyester Resin." International Journal of Scientific Research in Science, Engineering and Technology 12, no. 3 (2025): 942–45. https://doi.org/10.32628/ijsrset2512109.

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Polymer composites are among the most widely used materials in industrial and engineering applications due to their versatile properties and the potential to enhance their performance through the incorporation of nanomaterials. In this study, the thermal properties of a polyester composite reinforced with halloysite nanoparticles—a type of natural nanotube known for its significant impact on improving the thermal and mechanical performance of polymers—were investigated. This research may open new horizons for the use of such materials in engineering applications. Thermogravimetric analysis (TG

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Hegemann, Günter. "Low viscous unsaturated polyester resin for monomer free UP-resins." Macromolecular Symposia 199, no. 1 (2003): 333–42. http://dx.doi.org/10.1002/masy.200350928.

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Lubi, C. Mary, K. Ravi, Abdeen Ahammed, and Eby Thomas Thachil. "Modification of Unsaturated Polyester Resin Using Elastomers." Journal of Elastomers & Plastics 32, no. 1 (2000): 60–72. http://dx.doi.org/10.1177/009524430003200105.

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Matynia, Tadeusz, Ewa Pawlowska, and Jerzy Ksieżopolski. "Synthesis of Unsaturated Polyester Resin Containing Bromine." International Journal of Polymeric Materials 37, no. 1-2 (1997): 15–22. http://dx.doi.org/10.1080/00914039708031473.

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Nakagawa, Yoshimasa, Shigeki Banno, and Kazuo Matsuyama. "Control in curing of unsaturated polyester resin." Advanced Composite Materials 2, no. 4 (1992): 319–28. http://dx.doi.org/10.1163/156855192x00125.

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LUBI, C. MARY, K. RAVI, ABDEEN AHAMMED, and EBY THOMAS THACHIL. "Modification of Unsaturated Polyester Resin Using Elastomers." Journal of Elastomers and Plastics 32, no. 1 (2000): 60–72. http://dx.doi.org/10.1106/31gu-r0g6-dajj-8ay8.

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Budrugeac, P., and E. Segal. "Thermooxidative degradation of an unsaturated polyester resin." Journal of thermal analysis 49, no. 1 (1997): 183–91. http://dx.doi.org/10.1007/bf01987438.

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Yuan, Li, Xiao-Yan Ma, Guo-Zheng Liang, and Yun Huang. "Organic Rectorite-modified Unsaturated Polyester Resin Composites." Journal of Composite Materials 41, no. 9 (2006): 1051–65. http://dx.doi.org/10.1177/0021998306067274.

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Semsarzadeh, Mohammad A., and Davod Amiri. "Binders for jute-reinforced unsaturated polyester resin." Polymer Engineering and Science 25, no. 10 (1985): 618–19. http://dx.doi.org/10.1002/pen.760251007.

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Suspene, Laurent, Jean-François Gerard, and Jean-Pierre Pascault. "Morphology of unsaturated polyester resin-additive blends." Polymer Engineering and Science 30, no. 24 (1990): 1585–90. http://dx.doi.org/10.1002/pen.760302405.

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Zhao, XiaoLin, XiuFang Bian, ChunCheng Yang, and XinZhu Wang. "Liquid fragility of the unsaturated polyester resin." Science China Chemistry 56, no. 6 (2013): 724–28. http://dx.doi.org/10.1007/s11426-013-4853-5.

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