writer：Dongdong Wang, Fushi Li, Xiangming Xu, Lin Zhong, Chong Guan, Yunbao Gao, Wei Jiang, Haojun Liang
keywords：复合材料, 力学性能, 韧性, 微观结构, 抗冲击性
source：期刊
specific source：Journal of Polymer Research, 2022, 29(2), 38
Issue time：2022年

摘要：本文从HDPE分子量、弹性体含量和温度角度研究了聚（乙烯-co-辛烯）（POE）增韧高密度聚乙烯（HDPE）的脆韧转变。给出了HDPE分子量与临界弹性体含量和温度的关系，以及临界脆韧转变点处临界粒子间距（IDc）、HDPE分子量和温度的关系。利用这些关系，可获得具有最低弹性体含量即最低刚性损失的高抗冲HDPE共混物。结果表明，高抗冲HDPE/POE共混物的最低模量损失随HDPE分子量增加而显著降低。

Abstract：In this study, the brittle-ductile transition of poly(ethylene-co-octene) (POE) toughened high density polyethylene (HDPE) was studied in terms of HDPE molecular weight, elastomer content and temperature. The relation among HDPE molecular weight, critical elastomer content and temperature, the relation among critical interparticle distance (IDc), HDPE molecular weight and temperature at critical brittle-ductile transition point were given. From these relations, the high impact HDPE blends with the lowest elastomer content, i.e. with the lowest rigidity loss, could be obtained. The results show that the lowest modulus loss for high impact HDPE/POE blend reduces markedly with the increase of HDPE molecule weight.

论文链接：https://doi.org/10.1007/s10965-021-02882-7