针对高密度聚乙烯IBC桶专用料发黄问题分析
Yellowing Problem Analysis in High-Density Polyethylene IBC Barrel Special Material
刘洋 1杜文博 1杨公华 1谭捷 1岑静芸 1郭森1
作者信息
- 1. 中国石油化工股份有限公司茂名分公司研究院,广东茂名 525000
- 折叠
摘要
针对不同批次生产高密度聚乙烯TR580M的色度和物料发黄问题进行探讨和分析.选取一年中不同批次生产的TR580M,通过分子量及其分布、熔体流动速率(MFR)、氧化诱导时间(OIT)、挥发性有机物(VOC)、二甲苯不溶物、灰分含量、加工过程的扭矩检测等测试方法,对不同批次的样品进行分析.结果表明:相比于其他批次,TR580M色度偏高的批次灰分含量更低,二甲苯不溶物和VOC含量更多,不同剪切速率下的MFR变化和加工过程的扭矩上升更明显.判断其颜色发黄的主要原因是生产该批次的催化剂残余活性较高,加工过程的抗氧体系保护不足导致凝胶含量增加.
Abstract
The coloration and material yellowing problem in the production of high-density polyethylene TR580M from different batches are explored and analyzed.TR580M produced in different batches in one year was selected and analyzed by molecular weight and distribution,melt flow rate(MFR),oxidation induction time(OIT),volatile organic compounds(VOC),xylene insoluble matter,ash content and torque detection during processing.The results show that compared to the other batches,the higher TR580M chroma batch has lower ash content,higher xylene insoluble matter and VOC content,and more significant MFR changes at different shear rates and higher torque increases during processing.The main reason for the yellow color is that the residual activity of the catalyst produced in this batch is high,and the insufficient protection of the antioxidant system during the processing leads to the increase of the gel content.
关键词
高密度聚乙烯/TR580M/发黄/催化剂/凝胶Key words
High-density polyethylene/TR580M/Yellowing problem/Catalyst/Gel引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据