摘要
首次提出以玄武岩纤维增强热塑性聚酰亚胺,通过热模压工艺制备复合材料,通过考察成型工艺对冲击性能的影响,优化了成型工艺参数,即模压温度在360℃、压力在20 MPa、保压时间在30 min。在此基础上,进一步考察纤维含量对拉伸强度、断裂伸长率和弯曲强度的影响,结果发现:随着玄武岩纤维用量的增加,复合材料拉伸强度不断增大,但断裂伸长率下降,弯曲强度随着玄武岩用量增加而增大,表明复合材料刚性得到增强。考察了复合材料的阻燃性能,发现复合材料阻燃性能达到V0级,而且极限氧指数随着纤维用量增加,稍微增大,表明阻燃性能有一定提高。为汽车用摩擦材料提供一条思路。
By using thermoplastic polyimide as the matrix and basalt fiber as the reinforcer,the composite were prepared via thermoforming method firstly. In order to optimize the molding conditions,the influence of the molding temperature, molding pressure and holding time on the impact strength of the composite were investigated. The optimized molding conditions were molding temperature at 360 ℃ , molding pressure at 20 MPa, and holding time for 30 min. The influence of the basalt fiber content on the mechanical properties of the composite were also investigated. The result showed that the tensile and flexure strength increased and the elongation decreased with the basalt fiber content increases. It was showed that the composite had excellent flame retardant （V0） , and by increasing the basalt fiber content, the limiting oxygen index （LOI） of the composite increased a little bit. The investigation had provided a pathway for making friction materials in automobile.
出处
《塑料》
CAS
CSCD
北大核心
2014年第3期85-88,共4页
Plastics
基金
浙江省教育厅科研项目资助项目(Y201327791)
作者简介
作者简介：杨培娟（1981-），女，硕士，主要从事汽车材料、汽车检测方面的研究。E-mail：yangpeijuan125@163．com。
