材料科学
复合材料
介观物理学
抗弯强度
极限抗拉强度
乙二醇
聚合物
互穿聚合物网络
化学工程
量子力学
物理
工程类
作者
Weiwei Zhang,Xin Zhang,Zhaolu Qin,Jiyu He,Yanhua Lan
标识
DOI:10.1016/j.compositesb.2021.108604
摘要
The paper presents a new material (named PMPP) with interpenetrating polymer network (IPN) formed by rigid polysilsesquioxane and flexible poly(hexamethylene diisocyanate)/poly(ethylene glycol) (PHMDI/PEG). Based on the network, polysilsesquioxanes with different structures, such as ladder-like polysilsesquioxane (PPSQ), cage-like polysilsesquioxane (T7POSS) and reactive ladder-like polysilsesquioxane (VPOSS), were selected to further modify PMPP. All samples were subjected to mechanical analysis, thermal analysis and combustion analysis and simulated by molecular dynamics (MD) and MesoDyn simulation. The introduction of polysilsesquioxanes obviously improved the flexural strength, tensile strength, heat resistance and fire resistance due to the strong interaction between polysilsesquioxanes and PMPP network structures. The results of solubility parameters (δ), radial distribution functions (RDF), Flory-Huggins parameters (χ) and mesoscopic morphologies showed that T7POSS and VPOSS had stronger interaction, better compatibility and dispersion in PMPP, thereby providing theoretical foundation for performance improvements.
科研通智能强力驱动
Strongly Powered by AbleSci AI