Santiago David, Serra Àngels
Eurecat-Chemical Technologies Unit, C/Marcel·lí Domingo 2, 43007 Tarragona, Spain.
Department of Mechanical Engineering, Universitat Rovira i Virgili, Av. Països Catalans 26, 43007 Tarragona, Spain.
Polymers (Basel). 2022 May 30;14(11):2228. doi: 10.3390/polym14112228.
Hyperbranched polymers and multiarm star polymers are a type of dendritic polymers which have attracted substantial interest during the last 30 years because of their unique properties. They can be used to modify epoxy thermosets to increase their toughness and flexibility but without adversely affecting other properties such as reactivity or thermal properties. In addition, the final properties of materials can be tailored by modifying the structure, molecular weight, or type of functional end-groups of the hyperbranched and multiarm star polymers. In this review, we focus on the modification of epoxy-based thermosets with hyperbranched and multiarm star polymers in terms of the effect on the curing process of epoxy formulations, thermal, mechanical, and rheological properties, and their advantages in fire retardancy on the final thermosets.
超支化聚合物和多臂星形聚合物是一类树枝状聚合物，在过去30年中因其独特的性能而备受关注。它们可用于改性环氧热固性材料，以提高其韧性和柔韧性，同时又不会对其他性能（如反应活性或热性能）产生不利影响。此外，通过改变超支化和多臂星形聚合物的结构、分子量或官能端基类型，可以调整材料的最终性能。在这篇综述中，我们重点关注超支化和多臂星形聚合物对环氧基热固性材料的改性，包括对环氧配方固化过程、热性能、机械性能和流变性能的影响，以及它们在最终热固性材料阻燃方面的优势。
