宇航材料工艺2025，Vol.55Issue(1)：61-67,7.DOI:10.12044/j.issn.1007-2330.2025.01.008
新型双马来酰亚胺单体结构与树脂性能关系研究
Study on Relationship Between Stucture of Novel Bismaleimide Monomer and Resin Properties
马如飞 1丁江楠 2潘翠红 3赵志国 1周恒2
作者信息
- 1. 成都飞机设计研究所,成都 610041
- 2. 中国科学院化学研究所,北京 100190
- 3. 中航复合材料有限责任公司,北京 101300
- 折叠
摘要
Abstract
In order to improve the processing and mechanical properties of bismaleimide resin,eight novel types of bismaleimide monomers(hereinafter referred to as"bismaleimide monomers")with structures containing rigid bisphenol fluorene(FDABMI),side group(PIDABMI),ether bond(34ODABMI),amide bond(34DABABMI and 33DABABMI),sulfone group(44DDSBMI and 33DDSBMI)and chain extension(BAPSBMI)were prepared,aiming to explore the structure-performance relationship of bismaleimide monomners with different structures.At the same time,diallyl bisphenol A(DABPA)was used as modifier to prepare bismaleimide resin by melting copolymeriazation with new type of bismaleimide monomers.The results show that the melting points of BAPSBMI and PIDABMI with extended chain structure and side methyl structure decreases significantly to 74 ℃ and 70 ℃,respectively.The glass transition temperature of the resin prepared by 33ODABMI and BDM is similar,about 250 ℃,while the bismaleimide resin prepared with the chain extension monomer BAPSBMI has the lowest Tg of 230° C..The flexural modulus of 34ODABMI and 33DDSBMI are 4.1 MPa and 4.5 MPa,respectively,which are 14％and 25％higher than that of BDM.The results show that molecular structure design is closely related to performance,and the glass transition temperature of the resin is mainly related to the length of the bridging group in the bismaleimide monomer.The bismaleimide monomers with meta-substitution have higher flexural modulus.关键词
双马单体/熔点/耐热性/力学性能Key words
Bismaleimdie monomer/Melting point/Heat resistance/Mechanical properties分类
通用工业技术引用本文复制引用
马如飞,丁江楠,潘翠红,赵志国,周恒..新型双马来酰亚胺单体结构与树脂性能关系研究[J].宇航材料工艺,2025,55(1):61-67,7.
