以环氧树脂和聚氨酯为基体,短切玄武岩纤维(BF)为增强体,制备了玄武岩纤维增强环氧树脂团状模塑料(BF-BMC)。系统研究了BF-BMC的成型工艺对其力学性能和电性能的影响。结果表明:在不同成型工艺下,试样表面均光亮、平滑、无气泡、无裂纹;当成型温度、压力和时间分别为80℃/2 h+120℃/1 h+150℃/2 h、8 MPa和5 h时,BF-BMC的冲击强度、拉伸强度和弯曲强度分别为21 kJ/m2、30 MPa和102 MPa,其电气强度、体积电阻、介电常数(ε)和介质损耗因数(tanδ)分别为11.8 MV/m、2.6×1013Ω、6.3和0.014。
Using epoxy resin and polyurethane as matrix and basalt fiber as reinforcement, an epoxy resin bulk molding compound(BF-BMC) was prepared, and the effect of different molding process on the mechanical properties and electrical properties of the BF-BMC was studied systematically. The results show that the surface of all samples is bright and smooth without bubble and crack under different pro-cess condition. When the molding temperature, pressure and time are 80 ℃/2 h+120 ℃/1 h+150 ℃/2 h, 8 MPa and 5 h respectively, the impact strength, tensile strength and bending strength of the BF-BMC are 21 kJ/m2 , 230 MPa and 102 MPa, and the electric strength, volume resistance, dielectric constant(ε) and dielectric loss factor(tanδ) are 11.8 MV/m, 2.6×1013Ω, 6.3 and 0.014 respectively.
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