宋晓玲,崔学民,林坤圣,马学莲,黄东

• 1:广西大学化学化工学院广西石化资源加工及过程强化技术重点实验室
• 2:新疆天业(集团)有限公司

摘要(Abstract)：

采用聚氯乙烯(PVC)树脂与处于地聚合初期凝胶阶段的偏高岭土基地聚物混合、熔融加工的方法制备了PVC/偏高岭土基地聚物复合材料,研究地聚物含量对PVC复合材料加工塑化、力学性能、热性能及断面形貌的影响。发现少量地聚物(如≤8%(wt))的引入可促进PVC树脂的塑化,地聚物分散尺寸较小,在基体中分散较均匀,并与PVC基体有良好的界面结合,可有效发挥地聚物刚性粒子对PVC的增强增韧作用,复合材料有较好的力学性能,其中以4%(wt)的地聚物含量为最佳,其材料的抗冲击强度达到了9.16 kJ?m?2,比纯PVC材料提高了约40%。当地聚物含量过高时,PVC树脂塑化困难,地聚物分散尺寸增大,与PVC基体界面作用减弱,导致复合材料拉伸强度和韧性的下降。随着地聚物含量的增加,PVC复合材料抵抗热变形的能力增加,维卡软化温度升高。

关键词(KeyWords)： 聚氯乙烯;地聚物;复合材料;塑化;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(50962002,51262002);; 广西自然科学重点基金(2012GXNSFDA053003)资助

作者(Author): 宋晓玲,崔学民,林坤圣,马学莲,黄东

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