摘要
通过原位掺杂、多步接枝的方法制得系列掺杂Ti O2粒子(M系列粒子),并制备了系列氰酸酯树脂(CE)基复合材料,通过热重分析、示差扫描量热分析、电镜分析及力学性能测试对复合材料的固化动力学,M系列粒子对CE复合材料静态、动态力学性能和耐热性的影响进行了研究。结果表明,M系列掺杂粒子的引入可降低复合材料活化能,并未改变复合材料的固化机理。当M-2粒子的质量分数为3%时,复合材料的冲击强度增长74.1%;弯曲强度增长为83.8%,达到了同步增强增韧的目的。M系列粒子还可使复合材料的储能模量增长60%,耐热性能较纯CE提高20.3%。
The series Nd-doped anatase Ti O2particles（M series particles）were obtained by in-situ doping and multi-step grafting method and a series of cyanate ester resin（CE）matrix composites were prepared. The curing kinetics and effects of M series particles on the CE composite static and dynamic mechanical properties and heat resistance were studied by TG,DSC,SEM and mechanical property testings.The results showed that the introduction of the M-series doped particles in composite could reduce the activation energy and did not change the curing mechanism of composites. When the mass fraction of M-2 particle was 3%,the impact strength and flexural strength of the composites were increased by 74.1% and 83.8 %,respectively and the purpose of synchronous strengthening and toughening was achieved. The storage modulus of the composites was increased by 60% and the heat resistance was increased by 20.3% compared with that of pure CE by the addition of M series particles.
出处
《热固性树脂》
CAS
CSCD
北大核心
2015年第1期5-12,共8页
Thermosetting Resin
基金
陕西省科技厅工业攻关课题(2013K09-31)
西部军民融合技术产业发展研究院项目(13JMR19)资助
关键词
二氧化钛
钕
氰酸酯基复合材料
固化动力学
力学性能
耐热性
titanium dioxide
neodymium
cyanate ester matrix composite
cure kinetics
mechanical property
heat resistance
