| 强紫外光作用下PVC/增韧剂体系结构与性能的演变 |
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| 引用本文： | 皮红,陈深情,郭少云.强紫外光作用下PVC/增韧剂体系结构与性能的演变[J].高等学校化学学报,2009,30(5):1029-1034. |
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| 作者姓名： | 皮红 陈深情 郭少云 |
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| 作者单位： | 高分子材料工程国家重点实验室, 四川大学高分子研究所, 成都 610065 |
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| 基金项目： | 国家自然科学基金，国家高技术研究发展计划(863计划)，国家科技支撑计划 |
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| 摘 要： | 通过UV, FTIR, DSC及力学性能和色差的测试分析, 实时追踪了在紫外光老化过程中, 聚氯乙烯/氯化聚乙烯(PVC/CPE), 聚氯乙烯/丙烯酸酯类共聚物(PVC/ACR)及聚氯乙烯/丙烯腈-丁二烯苯乙烯共聚物(PVC/ABS)体系的微观结构和宏观性能的演变过程. 结果表明, 在光老化过程中, ACR和CPE对PVC脱HCl生成共轭双键反应、氧化降解反应、交联反应及玻璃化转变温度(Tg)的变化等均有抑制作用, 而ABS则对这些反应起促进作用. 在宏观上表现为ACR和CPE的加入能提高体系的色泽稳定性, 体系的力学性能保持率较高. 而ABS的作用相反.
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| 关 键 词： | 聚氯乙烯(PVC) 光老化 增韧 氧化 降解 交联 微观结构 |
| 收稿时间： | 2008-12-02 |
Microstructure and Properties Development of Impact-modified PVC During Photoageing |
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| PI Hong,CHEN Shen-Qing,GUO Shao-Yun.Microstructure and Properties Development of Impact-modified PVC During Photoageing[J].Chemical Research In Chinese Universities,2009,30(5):1029-1034. |
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| Authors: | PI Hong CHEN Shen-Qing GUO Shao-Yun |
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| Institution: | State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China |
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| Abstract: | The effects of acrylonitrile-butadiene-styrene copolymer(ABS),acrylic resin(ACR) and chloride polyethylene(CPE) on photodehydrochlorination,photooxidative degradation and photocrosslinking of poly(vinyl chloride)(PVC) were investigated by UV-Vis,FTIR spectra and DSC.The gel content in exposed sample was estimated gravimetrically.The color change and mechanical properties of PVC during photoageing were also studied.It was found that compared with PVC,the polyene,the carbonyl and the gel content in both PVC/A... |
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| Keywords: | Poly(vinyl chloride)(PVC) Photoageing Impact-modifier Oxidative Degradation Crosslinking Microstructure |
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