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iPP/PA11/PP-g-MAH共混物的机械性能和微孔发泡性

Mechanical Property and Microcellular Foamability of iPP/PA11/PP-g-MAH Blends.

作者信息

Liu Bosi, Wang Yangzheng, Pei Jingke, Fan Qiongdan, Li Kun, Li Lele, Zhang Xiaoli

机构信息

School of Materials Science and Engineering, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou 450001, China.

Sinopec (Henan) Refining and Chemical Co., Ltd., Luoyang 471012, China.

出版信息

Polymers (Basel). 2025 Jul 16;17(14):1952. doi: 10.3390/polym17141952.

DOI:10.3390/polym17141952
PMID:40732830
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12299155/
Abstract

To improve the mechanical property and foamability of linear structured isotactic polypropylene (iPP), a second phase of polyamide11 (PA11) was introduced to the iPP matrix, and a low contented PP-g-MAH was added to adjust their compatibility. As a result, a high impact strength of 8.43 kJ/m (a 118% increase compared to that of iPP) and an elongation at break of 465.87% (a 130% increase compared to that of iPP) of the compounded iPP/20PA11/10PP-g-MAH were achieved, which was attributed to the PA11 being well distributed in the iPP matrix and to the compatibility enhancement by PP-g-MAH. Depending on a suitable material formulation and a bath foaming strategic design, microcellular cells with an average size from 204.8 to 5.9 μm and a cell density from 6.0 × 10 to 6.5 × 10 cells/cm were obtained. Due to the significant enhancement of melt strength by partially melted crystals, combined with the synergistic effect of PA11, a quiet high expansion ratio of up to 37.9 was achieved. These manufactured foams have potential applications in packaging, thermal insulation, and other industrial fields.

摘要

为提高线性结构等规聚丙烯（iPP）的机械性能和发泡性，将聚酰胺11（PA11）第二相引入iPP基体中，并添加低含量的聚丙烯接枝马来酸酐（PP-g-MAH）来调节它们的相容性。结果，复合后的iPP/20PA11/10PP-g-MAH实现了8.43 kJ/m的高冲击强度（相比iPP提高了118%）和465.87%的断裂伸长率（相比iPP提高了130%），这归因于PA11在iPP基体中分布良好以及PP-g-MAH增强了相容性。通过合适的材料配方和浴式发泡策略设计，获得了平均尺寸为204.8至5.9μm且泡孔密度为6.0×10至6.5×10个泡孔/cm的微孔泡孔。由于部分熔融晶体显著提高了熔体强度，再结合PA11的协同效应，实现了高达37.9的相当高的膨胀比。这些制造出的泡沫在包装、隔热及其他工业领域具有潜在应用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b009/12299155/d4cc7412fb87/polymers-17-01952-g011.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b009/12299155/120d2f87eb60/polymers-17-01952-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b009/12299155/54afae7d26b0/polymers-17-01952-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b009/12299155/0250c144d64c/polymers-17-01952-g005.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b009/12299155/4ad18033be56/polymers-17-01952-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b009/12299155/eddcbf958bc7/polymers-17-01952-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b009/12299155/93ffa7903290/polymers-17-01952-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b009/12299155/24d88b7641d6/polymers-17-01952-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b009/12299155/d4cc7412fb87/polymers-17-01952-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b009/12299155/f8b4fb740450/polymers-17-01952-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b009/12299155/948fc18d67c6/polymers-17-01952-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b009/12299155/120d2f87eb60/polymers-17-01952-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b009/12299155/54afae7d26b0/polymers-17-01952-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b009/12299155/0250c144d64c/polymers-17-01952-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b009/12299155/96a4960ff9da/polymers-17-01952-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b009/12299155/4ad18033be56/polymers-17-01952-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b009/12299155/eddcbf958bc7/polymers-17-01952-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b009/12299155/93ffa7903290/polymers-17-01952-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b009/12299155/24d88b7641d6/polymers-17-01952-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b009/12299155/d4cc7412fb87/polymers-17-01952-g011.jpg

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