Polystyrene/vinyl ester resin/styrene thermoplastic elastomer composites: Miscibility, morphology, and mechanical properties

Authors

  • Jun Gu,

    1. School of Chemistry and Chemical Engineering, Shanghai Jiaotong University, Shanghai 200240, People's Republic of China
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  • Jiaming Lu,

    1. School of Chemistry and Chemical Engineering, Shanghai Jiaotong University, Shanghai 200240, People's Republic of China
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  • Xiancong Huang,

    1. Department of Polymer Science and Engineering, Quartermaster Institute of General Logistic Department, The Chinese People's Liberation Army (CPLA), Beijing 100010, People's Republic of China
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  • Xinling Wang,

    1. School of Chemistry and Chemical Engineering, Shanghai Jiaotong University, Shanghai 200240, People's Republic of China
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  • Zhen Zheng

    Corresponding author
    1. School of Chemistry and Chemical Engineering, Shanghai Jiaotong University, Shanghai 200240, People's Republic of China
    • School of Chemistry and Chemical Engineering, Shanghai Jiaotong University, Shanghai 200240, People's Republic of China
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Abstract

Polystyrene/Styrene-Ethylene-Propylene-Styrene/Vinyl Ester Resin (PS/SEPS/VER) blends used as matrix of ultra high molecular weight polyethylene (UHMWPE) fiber-reinforced composites, which included both physical crosslinking points of thermoplastic resin SEPS and chemical crosslinking network of thermosetting resin PS/VER, were prepared by solution blending and hot-molding. Morphology and mechanical properties of the PS/SEPS/VER composites were investigated in this work. The microstructure of PS/SEPS/VER composites observed by means of scanning electron microscopy (SEM) was correlated with mechanical properties. It is worth noting that, stiffness increased sharply with the addition of VER within a certain range. Impact properties verified the structure that the physical crosslinking points of SEPS were immersed in the chemical crosslinking network of PS/VER. Dynamic mechanical analysis revealed that, incorporation of VER changed the storage modulus and loss tangent. In brief, addition of VER had improved mechanical properties, thermal stability, and fluidity of the composites during processing, indicating a successful result for preparing resin matrix material with outstanding comprehensive performances. Analog map was presented to facilitate better understanding of the special structure of PS/SEPS/VER. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011

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