BDM-DDM-PO增韧改性BMI的合成与性能研究  

Study on synthesis and properties of BMI modified by BDM-DDM-PO as toughener

作　　者：胡利红[1] 梁红波[1] 熊磊[1,2] 

机构地区：[1]南昌航空大学无损检测技术教育部重点实验室,江西南昌330063 [2]西北工业大学理学院应用化学系,陕西西安710072

出　　处：《中国胶粘剂》2011年第8期33-36,共4页China Adhesives

基　　金：江西省自然科学基金项目(2009GQC0099);江西省教育厅重点实验室基金项目(No09679)

摘　　要：以4,4′-二氨基二苯甲烷型双马来酰亚胺(BDM)、二胺基二苯甲烷(DDM)及环氧丙烷(PO)为主要原料合成了BDM-DDM-PO三元共聚物,并以此作为BDM的增韧改性剂制备BDM-DDM-PO/BDM复合材料。着重探讨了BDM-DDM-PO用量对复合材料的结构特征、韧性和热性能等影响。结果表明:当w(BDM-DDM-PO)=5.0%时,BDM-DDM-PO/BDM复合材料的热性能略高于纯BDM体系,但前者的冲击强度(14.39 kJ/m2)和弯曲强度(97.4 MPa)分别比后者提高了39.71%和6.21%,前者的冲击断面呈韧性断裂特征,说明适量的增韧改性剂可有效提高BDM-DDM-PO/BDM复合材料的韧性。With 4,4′-diaminodiphenyl methane-type bismaleimide（BDM） ,diamino diphenyl methane（DDM） and propylene oxide（PO） as main raw materials,a BDM-DDM-PO terpolymer was synthesized,then a BDM-DDM-PO/BDM composite was prepared with terpolymer as toughener and modifier of BI）M. The influences of BDM-DDM-PO contents on the structure,toughness and thermal properties of composite were emphatically discussed. The results showed that the thermal properties of BDM-DDM-PO/BDM composite were slightly higher than those of pure BDM system,but the impact strength（14.39 kJ/m2） and bend strength（97.4 MPa） of the former were 39.71% and 6.21% respectively more than those of the latter when mass fraction of BDM-DDM-PO was 5.0%. the toughness-modifier with suitable content could effectively improve the toughness of BDM-DDM-PO/BDM composite because the impact fracture surface of the BDM-DDM-PO/BDM composite had a ductile fracture characteristics.

关 键 词：双马来酰亚胺 复合材料 力学性能 增韧 

分 类 号：TQ323.7[化学工程—合成树脂塑料工业]