摘要
针对氰酸酯采用环氧树脂进行改性研究,对该体系的流变性能与DMA进行分析,并对浇注体的力学性能进行了研究。以聚砜作为增韧剂,采用"离位"增韧技术,制备复合材料层压板,测试了复合材料的力学性能与冲击后压缩强度(CAI),对微观增韧机理进行了研究。结果表明,在40℃时,氰酸酯/环氧树脂体系有较长的工艺适用期,很好的工艺操作性。Tg为200℃时,浇注体的力学性能优良。采用热塑性树脂作为"离位"增韧层,体系出现了相反转结构,具有较好的增韧效果,复合材料的CAI值从180MPa增加到260MPa,对复合材料的力学性能没有影响。
Cyanate ester/epoxy matrices were studied through rheological, DMA and mechanical properties tests. Composites were prepared with polysulfone through ex-situ toughening technique. Compression strength after impact （CAI） and mechancal properties were studied. Microstructural scanning electron microscope （SEM）. As a result, when thermoplastic phase inversion structure appeared. CAI can be significantly improved toughening while mechanical properties are uninfluenced. toughening mechanism was studied through resin was used as ex-situ toughening layer, from 180 MPa to 260 MPa by using ex-situ
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2009年第4期58-61,共4页
Aerospace Materials & Technology
关键词
氰酸酯
“离位”增韧改性
冲击后压缩强度
Cyanate ester, Ex-situ toughening, Compression strength after impact
