石油化工2017，Vol.46Issue(12)：1479-1482,4.DOI:10.3969/j.issn.1000-8144.2017.12.006
高密度聚乙烯/低密度聚乙烯共混物
氧化诱导时间研究
Isothermal oxidation induction time of high density polyethylene/low density polyethylene blends
苗小培 1康鹏 1郭若海 1者东梅1
作者信息
- 1. 中国石化 北京化工研究院,北京 100013
- 折叠
摘要
Abstract
The thermal stability of polyethylene composites was studied by melt blending method. We mixed low density polyethylene(LDPE) with high density polyethylene(HDPE) according to a specific mass ratio in twin-screw extruder. The influence of same and different kinds of polyethylene and different ratio polymer blends on isothermal oxidation induction time(OIT),and melting behavior of two polyethylene blends were investigated by DSC. The results showed that the OIT of LDPE/HDPE blend was on the low side due to the nonuniform distribution of two components,but the OIT was directly proportional to the antioxidant content of HDPE/HDPE blend with better compatibility. Arrhenius equation which shows the relationship between the OIT and the aging temperature was established based on OIT measured under different temperatures. So it has certain practical significance that using Arrhenius equation to calculate polyethylene blends'life.关键词
熔融共混/聚乙烯/氧化诱导时间/Arrhenius方程Key words
melt blending method/polyolefin/oxidation induction time/Arrhenius equation分类
化学化工引用本文复制引用
苗小培,康鹏,郭若海,者东梅..高密度聚乙烯/低密度聚乙烯共混物
氧化诱导时间研究[J].石油化工,2017,46(12):1479-1482,4.
