Improving the flame retardancy and thermal property of organotitanate-modified epoxy resin for electronic application via a simple method
Improving the flame retardancy and thermal property of organotitanate-modified epoxy resin for electronic application via a simple method
复制标题
通过简单的方法提高电子用有机钛酸酯改性环氧树脂的阻燃性和热性能
DOI：
10.1177/0954008317749019
复制
发表时间：
2019-02-01
影响因子：
2.1
通讯作者：
Dai, Lizong
中科院分区：
文献类型：
--
作者：
Zeng, Birong;Yang, Li;Dai, Lizong
由于含卤阻燃剂在燃烧过程中会释放有毒化学物质，因此无卤环氧树脂（EP）的开发已成为电子封装材料领域的一大关注点。本文利用有机钛酸酯和9，10-二氢-9-氧杂-10-磷杂菲-10-氧化物（DOPO）的协同效应，通过简单的方法制备了一种具有高阻燃性、高耐热性和低吸湿性的多功能改性EP。采用动态力学分析、玻璃化转变温度、差示扫描量热法等对EP/Ti/DOPO体系的力学性能和热性能进行了表征，结果表明：有机钛酸酯和DOPO的加入不仅提高了EP的热分解温度和残炭率，而且提高了EP的玻璃化转变温度和极限氧指数（LOI）值。EP/Ti/DOPO体系达到UL 94 V-0等级，LOI为34.7%。与纯环氧树脂相比，EP/Ti/DOPO复合材料的峰值热释放速率、热释放量和总热释放量分别降低了33.3%、35.1%和16.7%。
The development of halogen-free epoxy resins (EPs) has become a major concern in the field of electronic packaging materials because flame retardants containing halogen release toxic chemicals during combustion. In this article, a type of modified EP possessing multiple functionalities, including high flame retardancy and thermal property as well as low hygroscopicity, was prepared via a simple method by taking advantage of synergistic effects of organotitanate and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO). The mechanical and thermal properties of the as-prepared EP/titanium (Ti)/DOPO system were characterized by dynamic mechanical analysis, glass transition temperature, differential scanning calorimetry, and so on. The results showed that the incorporation of organotitanate and DOPO into EP can not only enhance the decomposition temperature and residual char but also increase the glass transition temperature and limiting oxygen index (LOI) value. The EP/Ti/DOPO system reached UL94 V-0 rating with an LOI of 34.7%. Compared to pure epoxy, the peak heat release rate, heat release capacity, and total heat release of EP/Ti/DOPO were decreased by 33.3%, 35.1%, and 16.7%, respectively.