iPP/nano-CaCO3/PP-g-GMA复合材料的制备与性能

Preparation and Properties of iPP/nano-CaCO3/PP-g-GMA Composite

张翼清 ¹初立秋 ²金剑 ¹吴景深 ³黄逸伦²

扫码查看

作者信息

1. 中国纺织科学研究院有限公司,北京,100025
2. 中石化(北京)化工研究院有限公司,北京,100013
3. 香港科技大学,香港,999077
折叠

摘要

以等规聚丙烯(i PP)、纳米碳酸钙(nano-CaCO3)和甲基丙烯酸缩水甘油酯接枝改性抗冲共聚聚丙烯(PP-g-GMA)为原料,通过熔融共混法制备了i PP/nano-CaCO3/PP-g-GMA 复合材料.研究了 PP-g-GMA 对i PP/nano-CaCO3/PP-g-GMA复合材料力学性能、结晶行为和微观结构的影响,并分析了其增韧机理.结果表明:PP-g-GMA和 nano-CaCO3 具有协同增韧作用,当两者用量均为 40.0 质量份时,i PP/nano-CaCO3/PP-g-GMA 复合材料 23℃时的冲击强度约为纯i PP 的6.9 倍.PP-g-GMA和nano-CaCO3 均具有成核作用,促使基体球晶细化.PP-g-GMA 中的橡胶相以球形海岛形式分散在i PP中,起到增韧作用.

Abstract

Using isotactic polypropylene(iPP),nano calcium carbonate(nano-CaCO3)and glycidyl methacrylate grafted impact copolymer polypropylene(PP-g-GMA)as raw materials,iPP/nano-CaCO3/PP-g-GMA composite was prepared by melt blending method.The effects of PP-g-GMA on the mechanical properties,crystallization behavior and microstructure of iPP/nano-CaCO3/PP-g-GMA composite were studied,and its toughening mechanism was analyzed.The results show that PP-g-GMA and nano-CaCO3 have a synergistic toughening effect.When the dosage of both is 40.0 phr,the impact strength of iPP/nano-CaCO3/PP-g-GMA composite at 23℃ is about 6.9 times that of pure iPP.Both PP-g-GMA and nano-CaCO3 have nucleation effects,promoting the refinement of the spherulites in the matrix.The rubber phase in PP-g-GMA is dispersed in the form of spherical islands in iPP,playing a toughening role.

关键词

等规聚丙烯/接枝改性/冲击强度/增韧机理

Key words

isotactic polypropylene/graft modification/impact strength/toughening mechanism

引用本文复制引用

出版年

2024

现代塑料加工应用

中国石化扬子石油化工有限公司中国石化集团资产经营管理有限公司扬子石化分公司

现代塑料加工应用

CSTPCD北大核心

影响因子：0.343

ISSN：1004-3055

参考文献量5

段落导航