| 硬质PVC/ACR共混体系的增韧机理研究 |
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| 引用本文： | 李远,唐颂超,张德震,施英德. 硬质PVC/ACR共混体系的增韧机理研究[J]. 功能高分子学报, 2001, 14(2): 199-203 |
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| 作者姓名： | 李远 唐颂超 张德震 施英德 |
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| 作者单位： | 1. 石油化工学院,
2. 材料工程学院, |
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| 摘 要： | 通过TEM、SEM等方法研究了不同结构丙烯酸酯类抗冲改性剂（ACR）对聚氯乙烯（PVC／ACR共混体系形态结构的影响，对ACR增韧硬质PVC的机理作了探讨，当PVC中含有8phr以上完善核壳结构的ACR时，在共混体系能形成网络结构，这一结构在受冲击时产生多重银纹，并实现银纹的纯化，在PVC／ACR共混体系的增韧机理中占主导地位，同时，ACR诱发PVC产生剪切形变也是提高其增韧效果的因素。
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| 关 键 词： | 聚氯乙烯 形态 结构 丙烯酸酯类 抗冲改性剂 共混体系 增韧机理 改性 |
| 文章编号： | 1008-9357(2001)02-0199-05 |
| 修稿时间： | 2000-11-06 |
Study of Toughening Mechanism on PVC / ACR Blending System |
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| LI Yuan ,TANG Song chao ,ZHANG De zeng ,SHI Ying de. Study of Toughening Mechanism on PVC / ACR Blending System[J]. Journal of Functional Polymers, 2001, 14(2): 199-203 |
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| Authors: | LI Yuan TANG Song chao ZHANG De zeng SHI Ying de |
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| Affiliation: | LI Yuan 1,TANG Song chao 2,ZHANG De zeng 2,SHI Ying de 1 |
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| Abstract: | Influences of different acrylic impact modifiers (ACR) upon morphological structure of PVC/ACR blending systems was studied by means of TEM, SEM. Mechanism of ACR's excellent toughening effect on PVC is also investigated. The results show that a network structure, which causes multiple crazing and brings about passivation of crazes when the materials being subjected to a impact force, is formed in PVC if the content of ACR with perfect core shell structure exceeds 8 phr. Moreover, ACR can also induce the sheer deformation of PVC and its toughening effect is thus improved. |
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| Keywords: | PVC ACR toughening morphological structure |
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