纤维增强PPA/PTFE复合材料性能研究

Study on Properties of Fiber Reinforced PPA/PTFE Composites

以耐高温尼龙(PPA)和聚四氟乙烯(PTFE)合金为基体树脂,研究碳纤维(CF)、玻璃纤维(GF)和芳纶纤维(AF)的引入对复合材料性能的影响,研究纤维种类和纤维含量对复合材料力学性能和热性能的影响。结果表明:提高纤维的加入量,PPA/PTFE复合材料的拉伸、弯曲和热性能均随着纤维加入量的增加而提高。相比树脂基体,CF增强复合材料的拉伸强度、弯曲强度、拉伸模量和弯曲模量分别提升220%、132%、519%、459%;GF增强复合材料的拉伸强度、弯曲强度、拉伸模量和弯曲模量分别提升111%、77%、216%和152%;AF增强复合材料的拉伸强度、弯曲强度、拉伸模量和弯曲模量分别提升22%、15%、39%和59%。同等纤维含量条件下,CF对于复合材料的拉伸性能、弯曲性能和热性能提升幅度最大。

The effects of carbon fiber(CF),glass fiber(GF)and aramid fiber(AF)on the properties of composites were studied by using high temperature resistant nylon(PPA)and polytetrafluoroethylene(PTFE)alloy as matrix resin.The effects of fiber types and fiber content on mechanical and thermal properties of composites were studied.The results show that the tensile,bending and thermal properties of PPA/PTFE composites increase with the increasing of fiber content.Compared with the resin matrix,the tensile strength,flexural strength,tensile modulus and flexural modulus of CF reinforced composites are increased by 220%,132%,519%and 459%,respectively.The tensile strength,flexural strength,tensile modulus and flexural modulus of GF reinforced composites are increased by 111%,77%,216%and 152%,respectively.The tensile strength,flexural strength,tensile modulus and flexural modulus of AF reinforced composites are increased by 22%,15%,39%and 59%,respectively.Under the same fiber content,CF has the largest increase in the tensile,flexural and thermal properties of the composites.