氰酸酯/脂环型环氧树脂体系双阶段固化动力学行为  

Double Stage of Curing Kinetics of Cyanate Ester and Alicyclic Epoxy

作　　者：成浩冠 黄增彪[2] 容敏智[1] 章明秋[1] 

机构地区：[1]中山大学化学与化学工程学院材料科学研究所聚合物复合材料及功能材料教育部重点实验室,广东广州510275 [2]广东生益科技股份有限公司国家电子电路基材工程技术研究中心,广东东莞523808

出　　处：《广东化工》2015年第24期56-58,共3页Guangdong Chemical Industry

基　　金：广东省战略性新兴产业核心技术攻关项目:高效散热封装基板用覆铜板的关键技术研发与产业化(基金号2011A091102001)

摘　　要：采用DSC测试方法结合分段计算方法,研究了双酚A型氰酸酯（BADCy）/脂环型环氧树脂CY179体系的固化动力学。研究结果表明,固化活化能E随着固化反应的进行而不断变化,其变化趋势与固化速率的变化相似。E的变化范围在48.9-74.4 k J/mol之间。通过分段法分别计算了BADCy/CY179体系两个固化阶段的指前因子A和反应级数n＋m,从而更准确的表征氰酸酯/环氧树脂固化反应动力学特性。测试了固化物的各种物理性能,其中玻璃化转变温度高达245.4℃,显示出极高的耐热性。Curing kinetics of a bisphenol-A dicyanate ester（BADCy）/alicyclic epoxy resin CY179 was investigated by means of differential scanning calorimetry（DSC）. The cure reaction activation energy, E, proved to change constantly, which had similiar changing tendency with the rate of conversion. The value of E spans from 48.9 to 74.4 k J/mol. The frequency factor, A, and the overall order of reaction, m＋n, corresponding to each cure stage were calculated by dividing the cure procedure of BADCy/CY179 into two stages. Various physical properties of cured materials were measured, in which the temperature of glass transition（Tg） of cured product was 245.4 ℃, showing very high thermodynamic stability.

关 键 词：双酚A型氰酸酯 脂环型环氧树脂 固化动力学 

分 类 号：TQ[化学工程]