RHEOLOGIC STUDIES ON CHEMICAL CROSS-LINKING KINETICS FOR LDPE

作     者：杨红梅 Zhi-gang Liu Yong-zhu Yang Qiang Zheng 

作者机构：Zhejiang UnivDept Polymer Sci&EngnHangzhou 310027ZhejiangPeoples R China Minist EducKey Lab Macromol Synth&FunctionalizatHangzhou 310027ZhejiangPeoples R China 

出 版 物：《Chinese Journal of Polymer Science》 (高分子科学（英文版）)

年 卷 期：2012年第30卷第3期

页      面：378-386页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 0817[工学-化学工程与技术] 08[工学] 070305[理学-高分子化学与物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：financially supported by the Industrial Research Projects of the Science and Technology Plan of Ningbo  China(No.2010B10022) 

主　　题：Crosslinking kinetic LDPE Rheological measurement DSC measurement. 

摘      要：Crosslinking reaction of LDPE resin in the presence of dicumyl peroxide （DCP） was studied by isothermal rheological measurements at different temperatures and non-isothermal differential scanning calorimetry （DSC） technique with different heating rates. The kinetic parameters of crosslinking reaction were calculated by both rheological and DSC measurements. The results reveal that with the increase of DCP contents, the apparent activation energy, Ea, ranges from about 140 kJ/mol to 170 kJ/mol and the order of crosslinking reaction, n, approaches unity. The influence of measurement frequency, on crosslinking reaction was also investigated. It can be found that n does not change with the increase of ωand Ea decreases slightly with the increase of ω