模压成型环氧树脂/玄武岩纤维复合材料研究  

Study on Epoxy/Basalt Fiber Composites Fabricated via Compression Molding Process

作　　者：吴雪平[1] 代建建 汤瑛召 张先龙[1] 李亚旗[1] 钱立兵 

机构地区：[1]合肥工业大学化学与化工学院,合肥230009 [2]安徽梦谷纤维材料科技有限公司,合肥230009

出　　处：《工程塑料应用》2016年第1期16-21,共6页Engineering Plastics Application

基　　金：安徽省科技攻关项目(J2014AKKG0002);教育部留学回国人员启动基金项目(2013 JYLH0774)

摘　　要：以玄武岩纤维平纹布(BF)为增强体,环氧树脂(EP)为基体,采用模压工艺制备环EP/BF复合材料。研究了加压时机、成型压力、纤维体积含量对复合材料弯曲性能和层间剪切强度(ILSS)的影响,并研究纳米添加剂凹凸棒石/炭(PG/C)对复合材料力学性能及导热性能的影响,运用电子扫描显微镜观察并分析复合材料的断面形貌。结果表明,复合材料的最佳加压时机为凝胶45 min;成型压力和纤维体积含量影响复合材料的弯曲性能和ILSS;在BF体积分数为30%、成型压力为1 MPa条件下,添加纳米添加剂PG/C–0.5(PG/C的质量比为1/0.5)时,复合材料的力学性能最优,相比不含纳米添加剂,复合材料的弯曲强度、弯曲弹性模量及ILSS分别提高4.3%,10.7%和6.4%;添加纳米添加剂PG/C–0.5时,复合材料的导热性能最优,在25℃及100℃下的导热系数为0.28 W/(m·K)和0.31 W/(m·K),相对不含纳米添加剂时分别提高64.7%及41.0%。PG与负载在其表面的炭之间的协同作用促进了复合材料力学性能及导热性能的提高。Epoxy resin/basalt fiber（EP/BF） composites were fabricated via compression molding process using BF cloth as the reinforcing agent and EP as the matrix. The effects of conditions as pressure applying moment,shaping pressure and fiber volume content on the flexural properties and the interlaminar shear strength（ILSS） of the composites were investigated. And the effects of incorporating attapulgite/carbo（PG/C） on the mechanical properties and thermal conductivity of the composites were studied. Scanning electron microscope was used to observe the cross section morphology of the composites. Results showed that the optimal pressure applying moment was 45 min;the shaping pressure and fiber volume content had effects on the flexural properties and ILSS of the composites. The incorporation of PG/C–0.5（in which the mass ratio of cellulose to attapulgite was 0.5,the BF volume fraction was 30% and the forming pressure was 1 MPa） resulted in 4.3%,10.7% and 6.4% increases in the flexural strength,modulus and ILSS of the composites respectively with respect to those of the neat composites. The thermal conductivities of the composites were 0.28 W/（m · K） and 0.31 W/（m · K） at 25 ℃ and 100 ℃ with the increments of 64.7% and 41.0% respectively by incorporating PG/C–0.5 compared with those of the neat composites. Such improvements of the mechanical properties and the thermal conductivity attributed to the synergistic effect between PG and the carbon coated on its surface.

关 键 词：玄武岩纤维 复合材料 凹凸棒石/炭 力学性能 导热性能 

分 类 号：TQ327[化学工程—合成树脂塑料工业]