长玻璃纤维增强热塑性复合材料研究

分别制备了长玻璃纤维(LGF)、短玻璃纤维(SGF)增强聚苯硫醚(PPS)、聚酰胺(PA)6复合材料,研究了基体树脂粘度、口模类型、GF类型及喂料速度对复合材料力学性能、热性能的影响,利用扫描电子显微镜观察了注塑试样断面形貌及LGF在树脂基体中的分布状态.结果表明,基体树脂的粘度越大,对复合材料的力学性能影响越大;在相同GF含量下,LGF增强PPS、PA6复合材料的热变形温度普遍高于SGF增强PPS、PA6复合材料;LGF增强复合材料抵御裂纹开裂的能力提高.

STUDY ON LONG FIBER REINFORCED THERMOPLASTICS

Glass fiber reinforced PPS and PA6 composites were prepared respectively.The effects of resin viscosity,die type,fiber type and feeding speed on mechanical property and thermal property of the composites were studied,and the fracture morphology and the state of fiber in resin after injection molding were observed by SEM.The results showed that effect on mechanical property of composite improved with viscosity of resin.Deflection temperatures of PPS and PA6 reinforced by long fiber were higher than those of ...