Comparative study of continuous‐power and pulsed‐power microwave curing of epoxy resins
Comparative study of continuous‐power and pulsed‐power microwave curing of epoxy resins
复制标题
环氧树脂连续功率和脉冲功率微波固化的对比研究
DOI：
10.1002/pen.11346
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发表时间：
2000
影响因子：
3.2
通讯作者：
M. Hawley
中科院分区：
文献类型：
--
作者：
Bao;M. Hawley
三个环氧反应体系，双酚A二缩水甘油醚（DGEBA）与固化剂Meta苯二胺（mPDA），二氨基二苯甲烷（DDM），和二氨基二苯砜（DDS），固化与脉冲功率和连续功率微波固化系统。采用脉冲功率和连续功率微波固化系统，对每个反应体系在三个不同温度下进行等温固化。用傅里叶变换红外光谱（FTIR）测量固化程度。比较了两种固化方法的温度特性、入射和反射功率模式以及反应速率。通过观察两种固化过程的入射光功率和反射光功率来揭示反应状态。连续功率微波固化产生明显高于脉冲功率微波固化的反应速率。
Three epoxy reaction systems, diglycidyl ether of bisphenol A (DGEBA) with curing agents meta phenylene diamine (mPDA), diaminodiphenyl methane (DDM), and diaminodiphenyl sulfone (DDS), were cured with both pulsed-power and continuous-power microwave curing systems. Isothermal curing was conducted at three different temperatures for each reaction system with both pulsed-power and continuous-power microwave curing systems. Extent of cure was measured with Fourier Transform Infrared Spectroscopy (FTIR). The temperature characteristics, incident and reflected power patterns, and the reaction rates were compared between the two curing approaches. The incident power and reflected power of both curing processes were observed to reveal reaction status. Continuous-power microwave curing produced noticeably higher reaction rates than pulsed-power microwave curing.