【摘要】 密封材料在机械电力、石油化工领域具有广泛的应用，是防止发生泄漏和维护设备正常运行的重要基础元件。石墨烯微纳片因其具有良好的导热性、耐腐蚀性和力学性能，成为关键密封材料之一。实验以石墨烯微纳片为主要填料，以酚醛树脂（PF）和聚乙烯醇缩丁醛（PVB）为黏结剂，结合流延成型和堆叠热压成型技术，分别研究了石墨烯微纳片的含量、黏结剂比例和热压成型压力对复合密封垫的抗拉强度、压缩率和回弹率的影响，探索了石墨烯微纳片复合密封垫的铺叠热压成型工艺。结果表明：当石墨烯微纳片含量为55%、PF/PVB质量比为8∶15、成型压力为15 MPa、成型温度为120℃、保温时间为30 min时，石墨烯微纳片复合密封垫具有最佳的成型工艺性和性能，可制备满足质量要求的石墨烯微纳片复合密封垫。更多还原

【Abstract】 Sealing materials have a wide range of applications in the fields of mechanical power and petrochemicals, they are important basic components for preventing leaks and maintaining the normal operation of equipment. Graphene micronano sheets have become one of the key sealing materials due to their excellent thermal conductivity, corrosion resistance,and mechanical properties. This article mainly uses graphene micro-nano sheets as the main filler, phenolic resin(PF) and polyvinyl butyral(PVB) as binders, combined with tape casting and hot pressing technology, to study the effects of graphene micro-nano sheets content, binder ratio, and hot pressing pressure on the tensile strength, compression rate, and rebound rate of composite sealing gaskets, and explore the hot pressing and laminated object manufacturing process of graphene micro-nano sheets composite sealing gaskets. The results show that when the content of graphene micro-nano sheets is 55%, the PF/PVB mass ratio is 8∶15, the molding pressure is 15 MPa, the molding temperature is 120 ℃, and the insulation time is 30 min, the graphene micro-nano sheets composite sealing gasket has the best molding processability and property, which can be prepared to meet the quality requirements of graphene micro-nano sheets composite sealing gaskets.更多还原