滑石粉原位聚合改性聚酯热熔胶的结晶性能.pdf

结构与性能
合成树脂及塑料,2015,32(1):67
CHINA SYNTHETIC RESIN AND PLASTICS
滑石粉原位聚合改性聚酯热熔胶的结晶性能
祝爱兰,顾庆锋
(上海轻工业研究所有限公司,上海市200031)
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胺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,加人滑石粉
的聚酯热熔胶所降温速率更小,缩短了热熔胶涂覆后的冷却固化时间。
关键词:聚酯热熔胶滑石粉非等温结皛相对结晶度
中图分类号:TQ436.4;TQ323.4文献标识码:B文章编号:1002-1396(2015)01-0067-0
Crystallization properties of polyester hot melt adhesive modified by
in-situ polymerization with talc
Zhu Ailan, Gu Qingfeng
Shanghai Institute of Light Industry Co, Ltd, Shanghai 200031, China)
bstract: 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 Mos 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
Haif-crystallization time is being shortened by more than 50% at the cooling rate of 5, 10 C/min respectively
The kinetic analysis results show that Mos equation is suitable to describe the non-isothermal crystallization
rocess 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.
Keywords: polyester hot melt adhesive; talc; non-isothermal crystallization; relative crystallinity
聚酯热熔胶( PES HMA)是一种环保型热熔长时间干燥才能收卷,否则会出现层河粘连,产
胶,具有黏接强度高、对极性材料的黏接性能突生废品;同时,长时间于燥还会降低生产效率。因
出、电性能和耐化学介质性能优异等优点,广泛此,如何加快低熔点 PES HMA的结晶速率成为行
用于纺织、服装、汽车、包装、制鞋、电子、建材等业内广泛关注的问题之一。
行业,近年来呈现蓬勃发展的态势。 PES HMA是
本工作通过滑石粉原位聚合制备了快速结晶
以芳香族二元酸和脂肪族二元酸、脂肪族二元醇
为原料,经共缩聚得到的。随着低碳经济的推行,
收稿日期:2014-07-27;修回日期:2014-10-26
低涂覆温度成为热熔胶性能发展的方向之一,这
作者简介:祝爱兰,女,1976年生,高级工程师,2002年
就要求 PES HMA具有较低的熔点。然而低熔点
毕业于中南大学化学工艺专业,现主要从事热熔胶生产工
PES HMA的结晶速率较慢,导致产品涂胶后需较
作。联系电话:(021)6433631;E-mail: huainan(@@ slim oomen。