论文部分内容阅读
以甲基丙烯酸甲酯(polymethyl methacrylate,PMMA)和丙烯酸甲酯(polymethyl acrylate,PMA)为原料、短切碳纤维(Cf)为增强相,采用悬浮聚合法制备碳纤维增强聚甲基丙烯酸甲酯-聚丙烯酸甲酯基复合材料(carbon fiber-reinforced polymethyl methacrylate-polymethyl acrylate matrix composites,Cf/PMMA-PMA)。研究碳纤维含量(质量分数,下同)对Cf/PMMA-PMA显微结构及力学性能(抗折强度、抗压强度和拉伸强度)的影响。结果表明:随碳纤维含量增加,Cf/PMMA-PMA的挠度呈线性增长,而抗折强度、抗压强度和拉伸强度呈先增大后减小趋势。当碳纤维含量为15%时,Cf/PMMA-PMA的抗折强度、抗压强度和拉伸强度分别达到最大值115.5、244.6MPa和158.6MPa。
Polymethyl methacrylate (PMMA) and polymethyl acrylate (PMA) were used as raw materials and chopped carbon fiber (Cf) was used as reinforcing phase to prepare carbon fiber reinforced polymethylmethacrylate-poly Carbon fiber-reinforced polymethyl methacrylate-polymethyl acrylate matrix composites (Cf / PMMA-PMA). The effects of carbon fiber content (mass fraction, the same below) on the microstructure and mechanical properties (flexural strength, compressive strength and tensile strength) of Cf / PMMA-PMA were studied. The results show that the deflection of Cf / PMMA-PMA increases linearly with the increase of carbon fiber content, while the flexural strength, compressive strength and tensile strength first increase and then decrease. When the carbon fiber content is 15%, the flexural strength, compressive strength and tensile strength of Cf / PMMA-PMA reach the maximum of 115.5, 244.6MPa and 158.6MPa respectively.