| 紫外光辐照对软质聚氯乙烯结构及性能的影响 |
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| 引用本文： | 陈晓峰,黄斌,雷景新.紫外光辐照对软质聚氯乙烯结构及性能的影响[J].四川理工学院学报(自然科学版),2010,23(2):198-201. |
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| 作者姓名： | 陈晓峰 黄斌 雷景新 |
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| 作者单位： | 1. 四川理工学院材料与化学工程学院,四川,自贡,643000
2. 四川大学高分子研究所高分子材料工程国家重点实验室,成都,610065 |
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| 摘 要： | 采用表面衰减全反射傅立叶变换红外光谱(ATR-FTIR)、凝胶渗透色谱(GPC)、扫描电镜(SEM)、力学性能测试等方法研究了紫外光(UV)辐照对邻苯二甲酸二辛酯(DOP)增塑的软质聚氯乙烯(PVC)结构及性能的影响。结果表明,随着UV辐射时间的延长,分子链中引入了多种羰基官能团。数均分子量逐渐降低,重均分子量和Z均分子量先增大后逐渐减小,相对分子质量分布变宽。试样表面经历了粗糙、裂纹形成等形态破坏过程。UV辐照初期,试样的拉伸强度和断裂伸长率变化较小,进一步延长辐照时间,两者均显著降低。
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| 关 键 词： | 聚氯乙烯 紫外光 老化 结构 性能 |
Effect on Ultraviolet Irradiation on Structure and Properties of Soft Poly(vinyl chloride) |
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| CHEN Xiao-feng,HUANG Bin,LEI Jing-xin.Effect on Ultraviolet Irradiation on Structure and Properties of Soft Poly(vinyl chloride)[J].Journal of Sichuan University of Science & Engineering:Natural Science Editton,2010,23(2):198-201. |
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| Authors: | CHEN Xiao-feng HUANG Bin LEI Jing-xin |
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| Institution: | CHEN Xiao-feng1,HUANG Bin1,LEI Jing-xin2(1.School of Material , Chemical Engineering,Sichuan University of Science & Engineering,Zigong 643000,China,2.The State Key Laboratory of Polymer Materials Engineering,Polymer Research Institute of Sichuan University,Chengdu 610065,China) |
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| Abstract: | Effect on ultraviolet light(UV) irradiation on the structure and properties of soft PVC was studied by means of ATR-FTIR,GPC,SEM and mechanical properties tests.With UV irradiation time increasing,the carbonyl groups were generated on PVC's molecular chains.The number-average molecular weight of PVC decreased constantly.The weight-average molecular weight and Z-average molecular weight increased to a maximum then decreased,molecular weight distribution broadened.Surface of PVC samples became coarse and crac... |
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| Keywords: | poly(vinyl chloride) ultraviolet light aging structure property |
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