摘要
通过非等温差示扫描量热法(DSC)对纳米二氧化钛/双马来酰亚胺/氰酸酯(nano-TiO2/BMI/CE)树脂进行了动力学研究。通过Kissinger法、Ozawa法和Crane法求得了改性氰酸酯树脂体系的固化动力学参数。进而研究了不同固化工艺和后处理温度对nano-TiO2/BMI/CE共聚物介电性能的影响。结果表明:在同等组分下,nano-TiO2/BMI/CE共聚物微波固化树脂比传统热固化树脂的介电性能优良;在后处理温度一定的条件下,控制后处理时间,微波固化树脂的介电性能又进一步得到提高。
The non-isothermal curing kinetics of nano-TiO2/BMI/CE copolymers were studied by using the differential scanning calorimetry（DSC）.The curing kinetics parameters of the modified system were obtained by Kissinger equation,Ozawa equation and Crane′s theory.The effects of different curing processes and post-process temperatures on the dielectric performances of nano-TiO2/BMI/CE system were investigated.The results show that better dielectric properties of microwave curing system are also compared with these of conventional heat curing system under the same content of nano-TiO2/BMI/CE.Dielectric properties of microwave curing nano-TiO2/BMI/CE composites get more increasing via controlling post-process temperatures and post-process time.
出处
《航空材料学报》
EI
CAS
CSCD
北大核心
2011年第2期79-84,共6页
Journal of Aeronautical Materials
