滑石粉原位聚合改性聚酯热熔胶的结晶性能  

Crystallization properties of polyester hot melt adhesive modified by in-situ polymerization with talc

作　　者：祝爱兰[1] 顾庆锋[1] 

机构地区：[1]上海轻工业研究所有限公司,上海市200031

出　　处：《合成树脂及塑料》2015年第1期67-70,共4页China Synthetic Resin and Plastics

摘　　要：采用差示扫描量热仪研究了滑石粉原位聚合对聚酯热熔胶非等温结晶性能的影响,并用Takhor方程和莫志深非等温结晶动力学新方程处理所得数据。结果表明:滑石粉原位聚合显著促进了聚酯热熔胶的结晶,提高了结晶速率,表现在结晶温度和结晶活化能大幅提高,当降温速率分别为5,10℃/min时,半结晶时间缩短50%以上。动力学分析表明:莫志深方程适合描述聚酯热熔胶的非等温结晶过程,在达到相同相对结晶度时,加入滑石粉的聚酯热熔胶所需降温速率更小,缩短了热熔胶涂覆后的冷却固化时间。The non-isothermal crystallization properties of polyester hot melt adhesive modified by in-situ polymerization with talc were studied by differential scanning calorimetry（DSC）. The kinetic data obtained were processed by Takhor equation and Mo′s new non-isothermal crystallization equation. The results show that the in-situ polymerization with talc significantly promotes the crystallization of the polyester hot melt adhesive. The crystallization rate improves greatly, mainly in the increase of crystallization temperature and activation energy. Half-crystallization time is being shortened by more than 50% at the cooling rate of 5,10 ℃/min respectively. The kinetic analysis results show that Mo′s equation is suitable to describe the non-isothermal crystallization process of the polyester hot melt adhesive. The polyester hot melt adhesive adding talc needs lower cooling rate when achieving the same relative crystallinity,which means the shortened cooling and curing time in the hot melt adhesive coating.

关 键 词：聚酯热熔胶 滑石粉 非等温结晶 相对结晶度 

分 类 号：TQ436.4[化学工程] TQ323.4