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无规共聚聚丙烯中β－晶的增韧作用

ISSN号：0529-6579
期刊名称：中山大学学报(自然科学版)
时间：2015.10.10
页码：62-66
分类：O631.2[理学—高分子化学;理学—化学]
作者机构：[1]中山大学化学与化学工程学院材料科学研究所∥聚合物基复合材料及功能材料教育部重点实验室∥广东省高性能树脂基复合材料重点实验室,广东广州510275
相关基金：国家自然科学基金资助项目（51173208,51373202）; 广东省自然科学基金资助项目（S2011020001212）; 广东省自然科学博士启动基金资助项目（20110171120018）
相关项目：高性能填充β-PP复合材料的制备原理与技术研究

关键词： β-成核无规共聚聚丙烯, 力学性能, 结晶与熔融, β-modification polypropylene random copolymer, mechanical properties, crystallization and melting

中文摘要：

为提高无规共聚聚丙烯（PPR）冲击强度,制备了庚二酸钙成核PPR和纳米碳酸钙与负载庚二酸钙的纳米碳酸钙填充PPR,采用力学性能测试方法、DSC、XRD和SEM对比研究了其力学性能、结晶性能和β-晶含量。讨论了庚二酸钙和纳米碳酸钙及其负载庚二酸钙的纳米碳酸钙对PPR冲击强度、断裂伸长率、结晶温度和β-晶含量的影响,指出采用负载型β-成核剂是提高PPR韧性的有效方法。

英文摘要：

In order to improve the impact strength of polypropylene random copolymer（ PPR）,the calcium pimelate nucleated PPR,nano-Ca CO3 and calcium pimelate-supported Ca CO3 filled PPR were prepared. Their mechanical properties,crystallization behavior and the content of β-modification were studied using mechanical testing,differential scanning calorimetry,wide-angle X-ray diffraction and scanning electron microscopy. The effect of calcium pimelate,nano-Ca CO3 and calcium pimelate-supported Ca CO3 on the impact strength,elongation at break,crystallization temperature and β-modification contents of PPR were investigated. The result indicated that using supported β-nucleating agent was an efficient method to increase the β-modification contents and improve the toughness of PPR.

关于麦堪成：

填充PP复合材料中的β-晶韧性与填料增强相互作用的研究

期刊论文 8

高性能填充β-PP复合材料的制备原理与技术研究

期刊论文 39 会议论文 9

无机纳米粉体/聚合物复合材料的老化行为研究

期刊论文 18 会议论文 1

官能团化聚丙烯在掺杂型功能材料中的界面相互作用研究

期刊论文 4

新型高性能半互穿聚合物网络的相结构与互穿问题

期刊论文 10

高效负载β－成核剂制备及成核PP研究

期刊论文 19

关于章自寿：

聚合物自由基化及其复合纳米碳构筑电极材料研究

高导电弹性EVA/碳纳米复合材料及其复合MnO2电极材料的制备与性能研究

同期刊论文项目

填充PP复合材料中的β-晶韧性与填料增强相互作用的研究

期刊论文 8

高性能填充β-PP复合材料的制备原理与技术研究

期刊论文 39 会议论文 9

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