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首页> 外文会议>International Conference on Deformation, Yield and Fracture of Polymers; 20000410-20040413; Cambridge; GB >THE EFFECT OF GRAFTING DEGREE ON FRACTURE AND TENSILE PROPERTIES OF HIGH IMPACT POLYSTYRENE
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THE EFFECT OF GRAFTING DEGREE ON FRACTURE AND TENSILE PROPERTIES OF HIGH IMPACT POLYSTYRENE

机译：接枝度对高抗冲聚苯乙烯断裂和拉伸性能的影响

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摘要

The relationships between a few significant mechanical properties of high impact polystyrenes and their selected molecular-morphological characteristics were studied. A series of rubber toughened polystyrenes prepared by mass-suspension polymerization with constant amount of polybutadiene was evaluated and tested by standard methods. The technique of nonlinear multiple regression was applied to quantify the relationships between molecular-morphological characteristics and fracture and tensile properties. It was found that in some cases the grafting degree measured by standard method does not correspond to the theoretical pre-requisites in its relation to mechanical properties. The influences of other main parameters, particularly particle volume fraction, swelling index and molar mass on the tensile and impact properties are in accordance with findings published in literature. The quantified effects of particular parameters are discussed.
机译：研究了高抗冲聚苯乙烯的一些重要机械性能与其选择的分子形态特征之间的关系。通过质量悬浮聚合和恒定量的聚丁二烯制备的一系列橡胶增韧聚苯乙烯通过标准方法进行评估和测试。非线性多元回归技术被用来量化分子形态特征与断裂和拉伸性能之间的关系。发现在某些情况下，通过标准方法测量的接枝度在其与机械性能的关系上不符合理论上的先决条件。其他主要参数，特别是颗粒体积分数，溶胀指数和摩尔质量对拉伸性能和冲击性能的影响与文献中的发现一致。讨论了特定参数的量化效果。

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