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《Journal of Functional Polymers》 1991-04
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Study on the Relationship between Processing and Mechanical Properties for Self-reinforcement Polymers——1. A Theory of Stress-induced Crystallization for Ultra-high Molecular Weight Polyethytene and It's Self-reinforcement

Song Mingshi Lin Hanqing Hu Guixian(Research Institute of Polymeric Materials, Beijing Institute of Chemical Technology)  
A structure model of networks for UHMWPE which is composed of the two kinds of constituent Chains in these networks was proposed, and their probability distribution functions of the end-to-and vector were calculated by the present method. Based on the above model of networks for UHMWPE and the mechanism of large deformation the total free energy of stress-induced crystallization networks was calculated. Using the equation of the total free energy of deformation, the dependence of incipient melting temperature on extension ratio for polymer networks with stress-induced crystallization was derived.A series of expected lines were obtained, it shows that the thermodynamic theory of stres-induced crystalliization agrees with experimental results.
【Fund】: 国家教委博士点基金;; 中科院高分子物理开放实验室资助项目
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