论文部分内容阅读
将酰氯化后的氧化石墨烯与热致性液晶聚合物经溶液混合法制备热致性液晶聚合物/氧化石墨烯(TLCP/GO)混杂材料;通过辊炼、挤出、模压成型工艺制备热致性液晶聚合物/氧化石墨烯/酚醛树脂(TLCP/GO/PF)复合材料,研究TLCP/GO混杂材料含量对酚醛树脂复合材料的力学、动态力学及摩擦性能的影响。结果表明:添加量为0.5%时复合材料的弯曲强度及弯曲模量分别提高了26%及11%;添加量为0.5%时,复合材料初始储能模量提高了31.5%,同时,混杂材料的加入一定程度上改善了复合材料的摩擦磨损性能,其中混杂材料添加量为0.5%时,复合材料的摩擦系数在0.39~0.28之间,250℃时,复合材料的磨损率为0.39×10-7cm3/N·m,比纯酚醛复合材料降低48.7%,表明TLCP与GO具有协同增强作用。
A thermotropic liquid crystal polymer / graphene oxide (TLCP / GO) hybrid material is prepared by a solution mixing method of acyl chlorinated graphene oxide and a thermotropic liquid crystal polymer. The thermosetting liquid crystal polymer / graphene oxide (TLCP / GO) To investigate the effects of TLCP / GO hybrid materials on mechanical properties, dynamic mechanical properties and tribological properties of phenolic resin composites. The results showed that the flexural strength and flexural modulus of the composites increased by 26% and 11% respectively at 0.5% addition, and the initial storage modulus increased by 31.5% at 0.5% addition. At the same time, the hybrid materials The friction and wear properties of the composites were improved to a certain extent. The friction coefficient of the composites was between 0.39 and 0.28 when the amount of hybrid materials was 0.5%, and the wear rate of the composites was 0.39 × 10- 7cm3 / N · m, 48.7% lower than the pure phenolic composite, indicating that TLCP and GO have a synergistic effect.