玻璃纤维增强MC尼龙复合材料的力学性能.pdfVIP

北京机械工业学院学报990103 北京机械工业学院学报 JOURNAL OF BEIJING INSTITUTE OF MACHINERY 1999年 第1期 No.1 1999 玻璃纤维增强MC尼龙复合材料的力学性能 崔周平　盖雨聆　　李国禄　王昆林 　　摘　要　考察了玻璃纤维增强MC尼龙(GFRMCN)中玻璃纤维的表面处理及加入量对力学性能的影响。 并用SEM对GFRMCN材料界面及其对力学性能的影响进行了研究。结果表明：使用KH550作偶联剂对 GFRMCN复合材料是很有效的。当玻纤加入40%时，拉伸强度比基体提高32.2%，拉伸弹性模量提高152%， 弯曲强度提高74.3%，弯曲弹性模量提高了117%，而缺口冲击韧性提高了162%。根据材料的制备工艺特 点，玻纤的加入量以30%～40%为宜，既保证有良好的综合力学性能，又具有很好的工艺操作性。 　　关键词　MC尼龙；玻璃纤维；复合材料；力学性能 　　分类号　TH 301 THE MECHANICAL PROPERTIES OF GLASS-FIBER REINFORCED MONOMER CASTING NYLON(GFRMCN) Cui Zhouping　Gai Yuling (Department of Mechanical Engineering，Beijing Institute of Mechinery,Beijing 100085) Li Guolu　Wang Kunlin (Department of Mechanical Engineering， Tsinghua University,Beijing 100084) ABSTRACT 　　The effects of surface treatment and additional content of glass-fiber on mechanical properties of fiber reinforced MC nylon composite (GFRMCN) are studied. The GF/MC NYLON interface and its effect on the properties of GFRMCN are also analysed by using SEM. The results show that KH550 as coupling agent is efficeint to the GFRMCN; the tensile strength, tensile modulus, flexure strength,flexure modulus and impact toughness of GFRMCN composite(40wt% of G.F.) are respectively increased by 32.2%,152%,74.3%,117% and 162%,compared with MC nylon. According to the characteristics of material processing,30%～40% additional content of glass-fiber is suitable, which guarantees material having comprehensive mechanical properties and good processing property. 　　Key words　MC nylon; glass-fiber; composite; mechanical property 　　浇铸尼龙(即MC尼龙)利用碱催化阴离子开环聚合原理，生产工艺过程短，工艺简单，材料的聚合度 高，分子量与结晶度大，具有比其它工程塑料更优的性能，被广泛应用于机械行业，特别适用于制造注塑 成型和压制