Preparation and mechanical properties of SGF/PP foam composites toughened by EOC-g-MAH

YANG Jinian; LI Ziquan; LIU Xiaobei; WANG Lingyan; LIANG Yuxiang; LIU Jinsong

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Preparation and mechanical properties of SGF/PP foam composites toughened by EOC-g-MAH

更新时间：2025-12-10

- Preparation and mechanical properties of SGF/PP foam composites toughened by EOC-g-MAH
- CIESC Journal Issue 9, Pages: 2392-2397(2009)
- 作者机构：
  
  南京航空航天大学材料科学与技术学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 September 2009，
  
  Published：05 September 2009
- 稿件说明：
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YANG Jinian, LI Ziquan, LIU Xiaobei, et al. Preparation and mechanical properties of SGF/PP foam composites toughened by EOC-g-MAH[J]. CIESC Journal, 2009, (9): 2392-2397.
DOI：

YANG Jinian, LI Ziquan, LIU Xiaobei, et al. Preparation and mechanical properties of SGF/PP foam composites toughened by EOC-g-MAH[J]. CIESC Journal, 2009, (9): 2392-2397. DOI：

摘要

采用型内二次发泡工艺制备了马来酸酐接枝乙烯-1-辛烯共聚物(EOC-g-MAH)共混增韧短玻璃纤维(SGF)/聚丙烯(PP)泡沫复合材料，考察了EOC-g-MAH含量对复合材料的泡孔形貌、微观结构和力学性能的影响。结果表明，EOC-g-MAH的引入改善了泡沫体的发泡效果，平均孔径减小约35%，泡孔密度提高近4倍且分布均匀。SGF与基体间的界面结合得到显著增强，且EOC-g-MAH在SGF表面形成了颗粒黏附结构，大幅提高了SGF/PP泡沫复合材料的冲击韧度，并在质量分数为8%时达到最大值，增幅为77%。随着EOC-g-MAH质量分数的增加，SGF/PP泡沫复合材料的抗弯强度先增加后降低，而压缩强度则呈近似线性下降的变化趋势。

Abstract

The short glass fiber (SGF)/polypropylene (PP) foam composites toughened by maleic anhydride grafted ethylene-1-octene copolymer (EOC-g-MAH) were prepared via post-foaming process in designed dies.The influence of EOC-g-MAH content on the cellular morphology

microstructure and mechanical properties of composites were investigated.The results indicated that the outstanding improvement in foaming effect was realized by the addition of EOC-g-MAH with a 35% reduction for average cell size and nearly four-fold increase in cell density.The interfacial adhesion between SGF and matrix was enhanced.More importantly

a novel morphology of EOC-g-MAH particles adhered to the surface of SGF was observed.The impact toughness of the SGF/PP foam composites was improved significantly and the peak value with a 77% increase was obtained when the mass fraction of EOC-g-MAH was added up to 8%.The flexural strength of SGF/PP foam composites was increased first and then decreased. However

the compressive strength exhibited an almost linear decline with the increase of the EOC-g-MAH.

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