摘要
利用酯交换法制备出一种结构中同时含有亚氨基和氨基的新型超支化聚硅氧烷(HBPSi-NH2),并以其对双马来酰亚胺树脂(BMI)改性得到HBPSi-BMI,通过红外光谱、凝胶时间测试及示差扫描量热分析研究了HBPSi-BMI体系的固化反应过程及固化动力学。结果表明,HBPSi-BMI体系的固化工艺为140℃/2 h+180℃/2 h+220℃/4 h+250℃/6 h,HBPSi-NH2的加入很好地促进了BMI树脂体系的固化反应,且树脂体系的表观活化能也有所降低,从而使得HBPSi-BMI树脂成为工程领域具有良好应用前景的复合材料基体树脂。
The novel hyperbranched polysiloxane(HBPSi-NH2)containing both imino and amino groups in a structure was prepared by transesterification and the bismaleimide resin(BMI)was modified by HBPSi-NH2 to obtain HBPSi-BMI.The curing reaction process and curing kinetics of HBPSi-BMI system were studied by infrared spectroscopy,gel time test and differential scanning calorimetry.The results showed that the curing process of HBPSi-BMI system was 140℃/2 h+180℃/2 h+220℃/4 h+250℃/6 h.The curing of BMI resin system was well promoted by the addition of HBPSi-NH2.The apparent activation energy of the resin system was also reduced.Thus,the HBPSi-BMI resin became a composite matrix resin with good application prospects in the engineering field.
作者
贾园
刘振
李树娜
王璇
JIA Yuan;LIU Zhen;LI Shu-na;WANG Xuan(Key Laboratory for Surface Engineering and Remanufacturing in Shaanxi Province,College of Chemical Engineering,Xi′an University,Xi′an 710065,China)
出处
《热固性树脂》
CAS
CSCD
北大核心
2019年第5期11-16,共6页
Thermosetting Resin
基金
西安市科技计划创新基金文理专项项目(2017CGWL26)
西安文理学院2018年度重点课程项目(KGB201842)
陕西省表面工程与再制重点实验室天元开放基金(tywl2019-08)
