CAJ | 학술논문

采用环氧化端羟基聚丁二烯(EHTPB)对双酚A型二氰酸酯树脂(BADCy)进行增韧改性.运用差示扫描量热法分析改性体系的反应性,发现EHTPB对BADCy的固化反应有一定的催化作用.采用傅立叶变换红外光谱仪、扫描电子显微镜和广角X射线衍射仪等表征共混物的结构特征,研究增韧改性机理,并对固化产物进行热重分析和力学性能测试.结果表明,EHTPB 能在不显著降低体系热稳定性的同时改善体系的韧性,使得改性树脂具有较好的综合性能.
채용배양화단간기취정이희(EHTPB)대쌍분A형이청산지수지(BADCy)진행증인개성.운용차시소묘량열법분석개성체계적반응성,발현EHTPB대BADCy적고화반응유일정적최화작용.채용부립협변환홍외광보의、소묘전자현미경화엄각X사선연사의등표정공혼물적결구특정,연구증인개성궤리,병대고화산물진행열중분석화역학성능측시.결과표명,EHTPB 능재불현저강저체계열은정성적동시개선체계적인성,사득개성수지구유교호적종합성능.
Epoxidized hydroxyl-terminated polybutadiene (EHTPB) was used as a modifier for bisphenol A dicyanate ester (BADCy) to improve its toughness. The effect of EHTPB on the curing behavior of the resin was developed by differential scanning cal-orimetry. Results showed that addition of EHTPB had a catalytic effect on the curing behavior of BADCy. Fourier transform infrared spectroscopy, scanning electron microscope and WAXD were employed to study the structure of the modified resins and the toughening mechanism was also discussed. Thermogravimetry analysis and tensile test were used to study the thermal and mechanical properties of the resins. The results showed that the addition of EHTPB resulted in improved toughness while maintaining relatively good thermal sta-bility.