雷达吸波涂料用混合环氧树脂固化动力学研究  

Study on the Curing Kinetics of Blended Epoxy Resin for Radar Absorbing Paint

作　　者：谭延江[1] 邱华[1] 王艳艳[1] 周光华[1] 

机构地区：[1]中国兵器工业第五九研究所,重庆400039

出　　处：《涂料工业》2011年第5期15-17,21,共4页Paint & Coatings Industry

摘　　要：采用傅里叶红外光谱法(FT-IR)和示差扫描量热法(DSC)对雷达吸波涂料用混合型环氧树脂的固化反应历程进行了研究。由温度-升温速率外推法确定了该体系的起始固化温度、峰顶固化温度和终止固化温度为分别为60.55℃、97.0℃和131.79℃,为固化工艺的确定提供了依据;由K isserger方程求得共聚体系固化反应的表观活化能为65.6kJ/mol;根据Crane理论求得固化反应级数为0.91,接近于1级反应;通过Arrhen ius公式求得不同升温速率下固化反应的速率常数K,随着升温速率的升高,K值由0.276增大到0.983,反应速度显著加快。The curing procedure of blended epoxy resin for radar absorbing paint was studied by Fourier Transform Infrared Spectrometry （FF- IR） and Differential Scanning Calorimetric （DSC）. The initial curing temperature, peak curing temperature and termination curing temperature were determined by the extrapolation of temperature - heating rate curve as 60. 55℃, 97.0℃ and 131.79℃ respectively, which were helpful for finalization of the curing schedule. According to Kissinger equation, Crane theory and Arrhenius equation, the apparent activation energy, reaction order and reaction rate constants under different heating rates were obtained, as 65.6 kJ/mol, 0. 91 and 0. 276 - 0. 983, respectively. The curing reaction was nearly a first order reaction, and the reaction was accelerated remarkably as the heating rate raising.

关 键 词：环氧树脂 固化反应 动力学参数 雷达吸波涂料 

分 类 号：TQ635.9[化学工程—精细化工]