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用硅烷偶联剂KH550和二苯甲烷二异氰酸酯(MDI)分别对磨细玻璃纤维(MGF)进行表面改性(即KMGF,M-MGF),采用熔融法制备PA6/MGF复合材料。实验结果表明:PA6/M-MGF复合材料中M-MGF质量分数为20%时,拉伸强度从65.82 MPa提高到71.78 MPa,缺口冲击强度从11.86 k J/m2提高到23.73 k J/m2,增强增韧作用优于PA6/K-MGF复合材料;摩擦磨损性能研究发现,PA6/M-MGF复合材料的摩擦因数随着M-MGF质量分数的增加而下降;PA6/M-MGF和PA6/K-MGF复合材料的磨损率的变化趋势一致。
The surface modification of the ground glass fiber (MGF) (KMGF, M-MGF) was carried out by silane coupling agent KH550 and diphenylmethane diisocyanate (MDI) respectively. The PA6 / MGF composites were prepared by melt method. The experimental results show that the tensile strength increases from 65.82 MPa to 71.78 MPa and the notch impact strength increases from 11.86 k J / m2 to 23.73 k J / m2 when the mass fraction of M-MGF in PA6 / M-MGF composites is 20% The friction and wear properties of PA6 / M-MGF composite decreased with the increase of M-MGF content. The PA6 / M-MGF and PA6 / K-MGF composite wear rate trend of change.