摘要
针对超高分子量聚乙烯(UHMWPE)抗冲击性能不足的问题,通过改变聚合工艺条件,引入共聚单体1-辛烯,研究1-辛烯对UHMWPE树脂性能的影响,考察了所得产物的热性能及力学性能。结果表明:聚合中加入少量的1-辛烯,有助于提升UHMWPE树脂的抗冲击性能,当体系内1-辛烯浓度为0.127 mol/L时,所得产物的综合力学性能达到最优状态,冲击强度为138.1 kJ/m^(2),拉伸强度为31.9 MPa,断裂伸长率为379.6%。
Aiming at the problem of insufficient impact resistance of ultra-high molecular weight polyethylene(UHMWPE),the thermal properties and mechanical properties of the resulting product were studied by changing the polymerization process conditions and introducing comonomer 1-octene.Results show that the addition of a small amount of 1-octene in the polymerization is helpful to improve the impact resistance of UHMWPE resin.When the concentration of 1-octene in the system is 0.127 mol/L,the comprehensive mechanical properties of the product reach the optimal state,with an impact strength of 138.1 kJ/m^(2),a tensile strength of 31.9 MPa,and an elongation at break of 379.6%.
作者
赵美琪
张乐天
奚媛媛
叶纯麟
李建龙
ZHAO Meiqi;ZHANG Letian;XI Yuanyuan;YE Chunlin;LI Jianlong(Shanghai Research Institute of Chemical Industry Co.,Ltd.,Shanghai 200062,China;State Key Laboratory of Polyolefins and Catalysis,Shanghai 200062,China;Shanghai Key Laboratory of Catalysis Technology for Polyolefins,Shanghai 200062,China)
出处
《上海塑料》
2021年第3期8-13,共6页
Shanghai Plastics
基金
国家重点研发计划(2016YFB0302302)。
关键词
超高分子量聚乙烯
1-辛烯
抗冲击性能
力学性能
ultra-high molecular weight polyethylene
1-octene
impact resistance
mechanical property
