| Quantitative characterization of toughening mechanisms of rubber modified polymers |
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| 作者姓名： | 朱晓光 漆宗能 徐虎 李刚 蔡忠龙 C.L.Choy |
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| 作者单位： | Institute of Chemistry，Chinese Academy of Sciences，Beijing 100080，China，Institute of Chemistry，Chinese Academy of Sciences，Beijing 100080，China，Institute of Chemistry，Chinese Academy of Sciences，Beijing 100080，China，Institute of Chemistry，Chinese Academy of Sciences，Beijing 100080，China，Institute of Chemistry，Chinese Academy of Sciences，Beijing 100080，China，Department of Applied Physics，Hong Kong Polytechnic University，Hong Kong |
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| 基金项目： | Project supported by the National Natural Science Foundation of China，China-Ford Fund No. 09415312，Hong Kong Research Grant Council |
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| 摘 要： | The volume changes of rubber modified polymers under creep at room temperature were successfully used to characterize the toughening mechanisms of blends with brittle polymer matrices such as high impact polystyrene.This approach cannot be applied to pseudo-ductile polymers such as polypropylene and polyamide,because they are ductile when stretched at low speed at room temperature.Based on the time-temperature equivalence princi ple,the volume change at low temperature is proposed to characterize quantitatively the toughening mechanisms of polymer blends with ductile matrices,which is illustrated by applying this approach to rubber modified polypropylene
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| 收稿时间： | 11 July 1996 |
Quantitative characterization of toughening mechanisms of rubber modified polymers |
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| Xiaoguang Zhu,Zongneng Qi,Hu Xu,Gang Li,C. L. Choy.Quantitative characterization of toughening mechanisms of rubber modified polymers[J].Science in China(Chemistry),1997,40(2):146-151. |
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| Authors: | Xiaoguang Zhu Zongneng Qi Hu Xu Gang Li C L Choy |
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| Institution: | (1) Institute of Chemistry, Chinese Academy of Sciences, 100080 Beijing, China;(2) Department of Applied Physics, Hong Kong Polytechnic University, Hong Kong |
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| Abstract: | The volume changes of rubber modified polymers under creep at room temperature were successfully used to characterize the toughening mechanisms of blends with brittle polymer matrices such as high impact polystyrene.This approach cannot be applied to pseudo-ductile polymers such as polypropylene and polyamide,because they are ductile when stretched at low speed at room temperature.Based on the time-temperature equivalence princi ple,the volume change at low temperature is proposed to characterize quantitatively the toughening mechanisms of polymer blends with ductile matrices,which is illustrated by applying this approach to rubber modified polypropylene |
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| Keywords: | pseudo-ductile polymer brittle-ductile transition time-temperature equivalence micro-damage toughening mechanisms |
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