新型反应性多面寡合性西尔斯基素强化和硬化环氧树脂,用于先进复合材料
Weibo Liu1, Caiyun Wang1, Yu Feng1
1Key Laboratory for Specially Functional Polymeric Materials and Related Technology of (Ministry of Education), School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
多面体寡合性丝素 (POSSs) 用于硬化环氧树脂,而不会损害其它特性. 这些改性树脂表现出增强的性,使它们适用于先进的材料应用.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
背景情况:
- 硬化环氧树脂往往会降低其其他必不可少的性能.
- 多面体寡合性丝二氧化 (POSSs) 提供了独特的刚性和灵活结构的组合,可作为强化剂的潜在用途.
研究的目的:
- 为了合成和表征反应性POSS修饰剂与醇,氧基和环氧基.
- 为了研究这些POSS修饰剂在环氧树脂系统上的强化作用.
- 评估修饰剂含量和有机链长度对混合树脂特性的影响.
主要方法:
- 三种反应性POSS化合物的合成和表征:OMPPS,OCOPS和OGCPS.
- 将POSS修饰剂纳入环氧树脂 (AFG-90MH/MOEA) 中,以不同的摩尔比.
- 评估混合树脂的性能,包括粘度,固化温度,性 (关键应力强度因子,冲击强度),玻璃过渡温度和屈曲强度.
主要成果:
- 所有合成的POSS修饰剂都与环氧树脂具有良好的兼容性.
- 混合树脂的粘度很低,可以在低温 (110°C) 上固化.
- 观察到性显著改善,与原始环氧树脂相比,OGCPS-EP-0.6-C的关键应力强度因子和冲击强度分别增加了58.75%和22.48%.
- 玻璃过渡温度和屈曲强度基本保持不变.
结论:
- 反应性POSS化合物是环氧树脂的有效硬化剂.
- 开发的混合树脂提供了增强的性,而不会牺牲热稳定性和机械强度等关键性质.
- 这项研究表明,使用POSS修改创建高性能硬化环氧树脂的可行方法.
更多相关视频
14:24Manufacturing of Three-dimensionally Microstructured Nanocomposites through Microfluidic Infiltration
Published on: March 12, 2014
07:15A Testing Platform for Durability Studies of Polymers and Fiber-reinforced Polymer Composites under Concurrent Hygrothermo-mechanical Stimuli
Published on: December 11, 2014
相关概念视频
Fiber Reinforced Concrete
Reinforcements in Concrete
Olefin Metathesis Polymerization: Overview
Ruthenium-based Grubbs catalyst is the most commonly used catalyst for olefin metathesis polymerization. Grubbs catalyst consists...
Types of Step-Growth Polymers: Polyesters
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
