摘要
以高密度聚乙烯(HDPE)为基体树脂,(乙烯/丙烯)共聚物和(苯乙烯/丁二烯)共聚物为增韧剂研制出5种弹性体含量不同的聚乙烯增韧母料(E-TMB),将E-TMB与HDPE热机械共混制得弹性体总含量均为6.3%的5种HDPE/E-TMB共混物,研究了E-TMB中弹性体含量对共混物力学性能和热性能的影响。结果表明,当E-TMB中弹性体含量为44%时,共混物的综合力学性能最好,悬臂梁缺口冲击强度是HDPE的5.65倍,拉伸屈服强度和弯曲弹性模量保留率分别为90.8%和73.7%;共混物的熔点和热分解温度随E-TMB中弹性体含量的增加而升高,结晶温度随E-TMB中弹性体含量的增加而降低。
Five kinds of polyethylene toughening master batches (E-TMB) of different elastomer content were preapred with high density polyethylene (HDPE) as matrix resin, ethylene/propylene eopolymer and butadiene/styrene eopolymer as toughening agents, and HDPE/E-TMB blends with elastomer content of 6.3% were prepared by thermal mechanical blending E-TMB with HDPE seperately. The effects of elastomer eonetents of E-TMB on the mechanical and thermal properties of HDPE/E-TMB blends were researched. Results indicated that the integrated mechanical property of HDPE/E-TMB blends was best with notched izod impact strength increasing 5.65 times, retention rates of tensile yield strength and flexural modulus being respectively 90.8% and 73.7% when elastomer content of E-TMB was 44%. The melting points and thermal decomposition temperatures points of the blends increased gradually with increasing of elastomer eonetents, but the change rules of their crystallizing points were contrary.
出处
《工程塑料应用》
CAS
CSCD
北大核心
2006年第2期17-19,共3页
Engineering Plastics Application
关键词
高密度聚乙烯
增韧母料
弹性体
共混物
力学性能
热性能
high density polylethylene, toughening master batch, elastomer, blend, mechanical property, thermal property