T-ZnOw和POE改性聚丙烯的非等温结晶动力学  

Non-isothermal Crystallization Kinetics of Polypropylene Modified with POE and T-ZnOw

作　　者：李振中[1] 马雅琳[2] 何伟[3] 

机构地区：[1]中北大学分校高分子材料研究所,山西太原030008 [2]中北大学高分子与生物工程研究所,山西太原030051 [3]北京工业大学材料科学与工程学院,北京100022

出　　处：《中国塑料》2007年第7期29-34,共6页China Plastics

摘　　要：用 DSC 考察了 PP、PP/POE 和 PP/POE/T-ZnOw 复合材料的非等温结晶行为,并用 Jeziorny 法、Ozawa 法和莫志深法计算了复合材料的非等温结晶动力学参数,发现 Jeziorny 法和莫志深法能很好地分析 PP 及其复合材料的非等温结晶行为,而 Ozawa 方程则不适用。分析结果表明:POE 和 T-ZnOw 的加入起到了异相成核的作用,提高了PP 基体的结晶速率,其中 T-ZnOw 的作用更为明显。Kissinger 公式的分析结果显示 PP 的结晶活化能(339.94 kJ/mol)大于 PP/POE(262.03 kJ/mol)和 PP/POE/T-ZnOw(259.79 kJ/mol)复合材料的结晶活化能。Non-isothermal crystallization behavior of PP, PP/POE, and PP/POE/T-ZnOw composites was investigated using differential scanning calorimeter （DSC）. The parameters of non-isothermal crystallization kinetics were obtained through Jeziorny, Ozawa, and MO methods. It was found that Avrami equation and Mo method were satisfied to describe the non-isothermal crystallization behavior of these composites, while the Ozawa equation was not adequate. POE and T-ZnOw served as nucleating agents, increased the crystallization rate of PP matrix, with T-ZnOw being more effective. The analysis using Kissinger equation suggested that the activation energy of PP （339.94 kJ/mol） in neat system was higher than those of PP/POE （262.03 kJ/mol）and PP/POE/T-ZnOw （259.79 kJ/mol） systems.

关 键 词：聚丙烯 聚烯烃弹性体 四针状氧化锌晶须 非等温结晶动力学 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]