湿法混炼芳纶短纤维/丁腈橡胶复合材料的性能研究

Properties of Aramid Short Fiber/NBR Composite Prepared by Wet Mixing

用湿法混炼方法制备了芳纶短纤维/丁腈橡胶(NBR)复合材料,研究增稠剂和芳纶短纤维用量对复合材料性能的影响。结果表明:添加聚丙烯酸钠(PNaAA)和聚氧化乙烯(PEO)两种增稠剂有利于提高芳纶短纤维的分散性,添加质量分数为0.0075 PNaAA的复合材料拉伸性能最好;随着芳纶短纤维用量的增大,复合材料的拉伸性能先提高后降低;芳纶短纤维用量为2份时,复合材料的拉伸性能总体最好,芳纶短纤维补强效果最佳。

Aramid short fiber/nitrile butadiene rubber(NBR)composites were prepared by wet mixing,and the effect of amount of thickening agent and aramid short fiber on the properties of the composites were studied.The results showed that addition of thickening agent including sodium polyacrylate(PNaAA)and polyethylene oxide(PEO)could improve the dispersion of aramid short fiber.The tensile properties of the composite with mass fraction of 0.0075 PNaAA were the best.As aramid short fiber amount increased,the tensile properties of the composites increased firstly and then decreased.When the amount of aramid short fiber was 2 phr,the tensile properties of the composite and the reinforcement effect of aramid short fiber were the best.