聚乙烯相对分子质量及其分布快速评价方法研究  

Rapid evaluation for relative molecular mass and distribution of polyethylene

作　　者：高凌雁[1] 王群涛[1] 郭锐[1] Gao Lingyan;Wang Quntao;Guo Rui(Research Institute of Qilu Branch Co.,SINOPEC,Zibo 255400,China)

机构地区：[1]中国石油化工股份有限公司齐鲁分公司研究院,山东淄博255400

出　　处：《合成树脂及塑料》2024年第1期48-51,共4页China Synthetic Resin and Plastics

摘　　要：以国内外采用不同工艺和催化剂生产的17种聚乙烯的测试结果为基础,通过理论推导与模型拟合相结合,建立了以熔体流动速率快速计算相对分子质量及其分布的方法,并由此计算出数均分子量。经验证,该方法准确性较好,可弥补凝胶渗透色谱法的不足,有利于装置生产过程中准确控制产品质量和提高新产品开发效率。A method for rapid calculating molecular mass and molecular mass distribution with melt flow rate was established respectively through the theoretical derivation and model fitting on the basis of the analysis of 17 polyethylene resins produced by different processes and catalysts at home and abroad,by which number average molecular weight was calculated.It has been verified that the accuracy of the method can make up the deficiencies of gel permeation chromatograph,and it is beneficial to accurately control the product quality during the operation of the plant and improve the efficiency of new product development.

关 键 词：聚乙烯 相对分子质量及其分布 凝胶渗透色谱 熔体流动速率 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]