摘要
介绍了间歇式微发泡技术制备超轻高分子粒料的研究,探索了发泡温度、饱和时间、饱和压力对线性低密度聚乙烯(LLDPE)颗粒密度的影响。基于升温降压法的制备方法,可以制得密度为0.4989 g/cm3的LLDPE发泡颗粒,密度比原料颗粒降低45.65%,得出发泡温度是影响发泡颗粒密度的主要因素。描述了不同发泡温度条件下,发泡颗粒的特征变化。
The study of preparing super light polymer by the batch method was introduced. Density effects of foaming temperature, saturation pressure, saturation time on linear low-density polyethylene （LLDPE） particles were researched. Based on the evaporation and pressure quenching method, the micro foam LLDPE particles of O. 4989 g/cm3 could be produced. Foam particles density 45.65% lower than original particles density. The foaming temperature were the main factors affecting foam particles density. The characteristics of foam particles were described in different foaming temperature.
出处
《塑料》
CAS
CSCD
北大核心
2015年第3期14-16,60,共4页
Plastics
关键词
超临界流体
LLDPE
升温降压法
饱和
密度
supercritical fluid
LLDPE
evaporation and pressure quenching method
saturation
density
