MEModern Engineering2996-69732996-6981Art and Design10.61369/ME.2024070029Article微发泡聚丙烯的制备及其在汽车门板中的应用https://artdesignp.com/journal/ME/1/7/10.61369/ME.2024070029巩丽,孙文强,刘光烨2024172024-09-20 为了探索熔体强度对聚丙烯发泡效果的影响，通过不同聚丙烯共混并用的方式制备了不同熔体强度的聚丙烯复合材料，通过力学性能、熔体强度、扫描电镜等对聚丙烯复合材料的发泡性能进行研究。结果表明，不同流动性聚丙烯配合，加上弹性体，可获得熔体强度适中的聚丙烯复合材料，发泡后泡孔均匀，尺寸为20-60um。高熔体强度聚丙烯的加入，使得聚丙烯复合材料的熔体强度过高，泡孔尺寸较大，为100-200um，而且泡孔数量较少。单一聚丙烯发泡后形成的泡孔多为连泡，形成大的空洞，成为缺陷。只有适宜的熔体强度，才能获得较好的发泡“三明治”结构，达到较好的发泡效果。 聚丙烯,微发泡,熔体强度,“三明治”结构

[1]Sun Wenlong, Chen Xiaokai, Wang Lu.Analysis of Energy Saving and Emission Reduction of Vehicles Using Light Weight Materials[J]. Energy Procedia, 2016,88:889-893. [2]Frey H C.Trends in onroad transportation energy and emissions[J]. Journal of the Air & Waste Management Association,2018,68(6):514-563. [3]明星星,汽车内饰用聚丙烯材料的轻量化研究[D].贵州大学，2022. [4] Li Y, etc.Rheological, crystallization and foaming behaviors of high melt strength polypropylene in the presence of polyvinyl acetate[J]. J Polym Res. 2018;25(2):46. [5] Rong Deng, Tuanhui Jiang, Chun Zhang, et al. In-Situ Visualization of the Cell Formation Process of Foamed Polypropylene under Different Foaming Environments[J]. Polymers 2021, 13,1468. [6] 金阳，谭小华，陈贤益，等. 长链支化制备高熔体强度PP的研究[J].2002，16(10):24-28. [7] SH Yetgin, H Unal1 and A Mimaroglu. The Effect of Test Parameters on Friction and Wear Performance of PTFE and PTFE Composites[J]. Journal of Cellular Plastics, 2014, 50(6) 563–576 [8] Jie Ding, Weihua Ma, Qin Zhong, Foaming of homogeneous polypropylene and ethylene-polypropylene block copolymer using supercritical carbon dioxide[J]. Polymerplastics Technology and Engineering, 2013,52: 592-598 [9] Kim DY, etc. Effects of chain extender on properties and foaming behavior of polypropylene foam[J]. RSC Adv. 2019;9(44):25496-25507. [10] Bujin Liu, Tuanhui Jiang, Xiangbu Zeng, et al. Polypropylene/thermoplastic polyester elastomer blend:Crystallization properties, rheological behavior, and foaming Performance[J]. Polym Adv Technol. 2021;32:2102-2117.