摘要
采用冷压和自由烧结工艺制备碳纤维填充改性聚四氟乙烯(PTFE)密封材料。通过对材料的抗拉强度、压缩回弹率和应力松弛率等进行测试,探讨了不同的碳纤维表面处理工艺对复合材料密封性能的影响。研究结果表明:采用等离子表面处理工艺使碳纤维表面活性提高,优化了纤维与树脂间的界面粘结性能,大大改善了复合材料的密封性能。与其他纤维表面处理工艺相比,所获得密封材料的抗拉强度可提高8.02%,其压缩率达到11.02%,回弹率77.79%,且具有较好的抗冷流、蠕变性能。
PTFE sealing materials filled with carbon fiber were developed by the molding and sintering process.Tensile strength,compression spring rate and stress relaxation rate were tested.Explored the effects of different methods of carbon fiber surface treatment on the performances of PTFE sealing materials.The result shows：plasma surface treatment process increase the surface activity of carbon fiber,improve the performance of interfacial adhesion between fiber and resin,and greatly improve the sealing properties of composites.Compared with other methods,the tensile strength of the PTFE sealing materials developed by plasma surface treatment process increases 8.02％.The compression rate of the material reaches 11.02％,resilience rate 77.79％.And the anti-cold and anti-creep performances of the material are also improved obviously.
出处
《轻工机械》
CAS
2014年第5期27-30,34,共5页
Light Industry Machinery
