玄武岩纤维增强复合材料的制备及有限元分析

选取玄武岩纤维作为增强材料,聚丙烯(PP)为基体材料,采用模压工艺制备复合材料。采用单因子试验法研究了温度、压力及保压时间对玄武岩/PP复合材料力学性能的影响,结果表明:不同工艺条件对复合材料的力学性能有很大的影响,在成型温度190℃、成型压力10 MPa、保压时间10 min时制备的复合材料力学性能最佳,此时拉伸强度为267 MPa。运用有限元分析软件对最佳工艺条件下制备的复合材料进行拉伸过程计算机模拟,得出材料的模拟拉伸变形图,并与实际拉伸情况进行对比。有限元模拟表明,断裂发生在试件的平直段端部附近,采用此最佳工艺制备玄武岩/PP复合材料具有可靠性。

Preparation and finite element analysis of polypropylene composite reinforced with basalt fiber

In this paper,basalt fiber was selected as reinforcing material,polypropylene(PP) as the matrix material and molding process was used to prepare the basalt fiber reinforced PP composite.First,we investigated the effect of temperature,pressure and packing time on the properties of basalt/PP composite by the single factor experiment method.The results show that different process conditions have great influence on the mechanical properties of the composite and the best mechanical properties(267 MPa) was obtained when the process conditions such as molding temperature,pressure,packing time were selected as 190 ℃,10 MPa,10 min.Secondly,the finite element analysis software was used to simulate the drawing process of the material made on the best technological conditions.Meanwhile,the tensile deformation figure was got and compared with the practical tensile conditions.Furthermore,the fracture at the end of specimens' straight section was found by simulation,and was the same as the actual situation.That is to say,taking the best technology to prepare basalt/PP composite is reliable.