摘要
利用典型的限制几何构型催化剂催化乙烯与1-丁烯或1-己烯的共聚合,研究了聚合温度、共聚单体含量以及氢气用量对催化剂活性、聚乙烯熔体流动速率和密度的影响。结果表明:随着聚合温度升高,催化剂活性先升高后降低;聚合温度的提高、共聚单体含量及氢气用量的增加均会导致聚乙烯的熔体流动速率升高;随着共聚单体含量的增加,所制聚乙烯的密度逐渐降低。另外,建立了乙烯聚合过程的数学模型,并利用数学模型指导了乙烯聚合过程的研究和质量控制。
The typical constrained geometry catalyst was employed to catalyze the copolymerization of ethylene with1-butene as well as1-hexene.The effects of polymerization temperature,comonomer feedstock and hydrogen intake amount on the catalytic activity of the catalyst,melt flow rate and density of the resultant polyethylene were investigated.The results show that the catalytic activity increases and then decreases with the increase of polymerization temperature.The increasing polymerization temperature,monomer content and hydrogen intake accelerate the melt flow rate of polyethylene.The density of polyethylene decreases gradually with the increase of comonomer feedstock.In addition,the mathematical model of ethylene polymerization is established to guide the research and quality control for the process.
作者
罗静彦
Luo Jingyan(Changchun Institute of Education, Changchun 130021, China)
出处
《合成树脂及塑料》
CAS
北大核心
2017年第5期46-50,共5页
China Synthetic Resin and Plastics
关键词
乙烯
1-己烯
气相聚合
数学模型
ethylene
1-hexene
gaseous polymerization
mathematical model
作者简介
罗静彦，女，1968年生，硕士，副教授，研究方向为数学建模及应用。E-mail：765797485@qq.com。
