摘要
通过2-甲基咪唑(2MZ)和1,3,5-苯三酸(TMA)反应制得咪唑羧酸盐型环氧潜伏性固化促进剂,将其用于双酚A型环氧树脂/酸酐灌封体系中。采用红外光谱、核磁共振光谱及粘度测试考察了该促进剂的潜伏性,并采用示差扫描量热法(DSC)研究了体系的非等温固化行为。结果表明,成盐改性有效抑制了室温下咪唑环3位上吡啶氮原子的反应性,其单组分体系室温贮存1个月后仍具有较好的流动性,潜伏性优于市售商品,且升温后释放的咪唑可高效地促进环氧固化,满足中高温固化的要求。
The imidazole carboxylate type epoxy latent curing accelerator was prepared by reacting 2-methylimidazole (2MZ) with trimesic acid (TMA),and was used for bisphenol A type epoxy resin / acid anhydride potting system.The latent properties of the accelerator were investigated by infrared spectroscopy ,nuclear magnetic resonance spectroscopy and viscosity test.The non-isothermal curing behavior of the system was studied by differential scanning calorimetry (DSC).The results showed that the reactivity of the pyridyl nitrogen atom at the 3-position of the imidazole ring at room temperature was effectively inhibited by the salt formation modification.The one-component system still had good fluidity after storage for one month at room temperature.The latent property of the accelerator was superior to commercial products.And the epoxy curing was efficiently promoted by released imidazole after raising the temperature and met the requirements of medium and high temperature curing.
作者
唐禹尧
申姁妍
魏玮
费小马
李小杰
刘晓亚
TANG Yu-yao;SHEN Xu-yan;WEI Wei;FEI Xiao-ma;LI Xiao-jie;LIU Xiao-ya(School of Chemical and Material Engineering,Jiangnan University,Wuxi 214122,China;Wuxi Chuangda Advanced Materials Co.,Ltd.,Wuxi 214028,China)
出处
《热固性树脂》
CAS
CSCD
北大核心
2019年第3期18-24,共7页
Thermosetting Resin
基金
2018年江苏省产学研合作项目(FZ20180095)
作者简介
唐禹尧(1994-),男,江苏人,硕士研究生,研究方向为半导体封装用环氧模塑料助剂;通讯联系人:魏玮,E-mail:wwei1985@jiangnan.edu.cn。
