耐高温不饱和聚酯树脂的制备与固化.pdf

油化工
802
PETROCHEMICAL TECHNOLOGY
2013年第42卷第7期
才料
耐高温不饱和聚酯树脂的制备与固化
许胜,陈建,何阳,冯オ华,李浩,米普科
(华东理工大学材料科学与工程学院,上海200237)
[摘要]以环戊二烯和顺丁烯二酸酐为单体合成了3,6-内次甲基-1,2,3,6-四氢苯二甲酸酐(NA),以NA代替部分邻苯二甲
酸酐与多元醇反应制备了耐高温不饱和聚酯树脂。采用非等温DSC法研究了该耐高温不饱和聚酯树脂的固化反应动力学,根
据7-β外推法确定固化反应的起始温度、峰值温度和结東温度分别为130,145,185℃;通过 Kissinger- Ozawa法和 Crane方程
求得其固化反应的活化能为12.93 KJ/mol、碰撞因子为4.24×103、反应级数为0.88。利用统计法得到该耐高温不饱和聚酯树脂
的耐热温度为182℃,高于半酯化法改性的双环戍二烯型不饱和聚酯树脂。
[关键词]耐高温不饱和聚酯树脂;固化;固化动力学
[文章编号]1000-8144(2013)07-0802-05
中图分类号TQ323.42
文献标志码]A
Preparation and Curing of High Temperature Resistant Unsaturated Polyester Resin
Xu Sheng, Chen Jian, He Yang, Feng Caihua, Li Hao, Mi Puke
School of Materials Science and Engineering, East China University of Science and Tecnology, Shanghai 200237, China)
Abstract J 3, 6-endomethylene-1, 2, 3, 6-tetrahydro phthalic anhydride(NA)was synthesized from
cyclopentadiene and maleic anhydride, and then high temperature resistant unsaturated polyester
resin was prepared from polyhydric alcohol and NA that could partially replace phthalic anhydride
The kinetics for the unsaturated polyester resin curing was studied by means of DSC. Based on I-B
extrapolation, the initial temperature, peak temperature and finish temperature of the curing process
were determined as 130, 145 and 185 C, respectively. The activation energy, frequency index and
reaction order of the curing reaction were determined by Kissinger-ozawa method and Crane equation
2. 93 kJ/mol, 4. 24 x 10 and 0.878, respectively. The decomposition temperature of the r
182 C calculated by statistical method, which is higher than that of unsaturated dicyclopentadiene
modified polyester resin obtained by half-esterifying
I Keywords J high temperature
sistant unsaturated polyester resin; curing; cure kinetics
不饱和聚酯树脂在无溶剂绝缘浸渍漆领域中的含量为1%~9%(w)时,不饱和聚酯树脂的热变
得到越来越多的应用,以不饱和聚酯树脂为基体的形温度可提高4.5℃。张复盛等以双马来酰亚胺
树脂产品具有低温快固化、综合性能优异、成本(BMI)为共聚单体对不饱和聚酯树脂进行共聚改
低、工艺性能好、稳定性高和漆液黏度低等诸多性,由于BM具有耐高温的特性,且能与苯乙烯生
优点?。但普通不饱和聚酯树脂的耐热性不高,成交替共聚物,因此可有效地提高共聚体系的热稳
通常只能用作B级浸渍漆,无法满足制备H级浸渍定性。但目前的改性剂大多价格昂贵,不能进行大
漆的需要。研究者通过多种方法对不饱和聚酯进规模工业生产。我国的双环成二烯主要来自石油
行改性以提高其耐温性能。张建华等合成的有机裂解制乙烯的副产物C馏分和煤炭焦化副产轻苯留
硅改性不饱和聚酯树脂耐热性好、高低温电气性
能优良。彭永利等?利用N-苯马来眈亚胺(NPM)に收稿目期!2013-01-14;【修改稿日期]2013-04-07
作者简介许胜(1969-),男,江苏省睢宁县人,博士,副削教
改性不饱和聚酯树脂,实验结果表明,NPMI的引!授,电话021-625185,电邮xnaa
入可有效提高不饱和聚酯树脂的耐热性,当NPMI[基金项目]上海市联盟计划项目(446)。