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Study on the Water-absorption and Tribological Properties of PA-6/PP Blends

SUN Li,ZHONG Ming-qiang,XU Bin(College of Chemical Engineeringand Materials,Zhejiang University of Technology,Hangzhou 310014,China)  
Nylon6(PA-6) is used as wearable material for its excellent anti-wear capability,but its water-absorption destroys or limits its' wide application.The paper describe the preparation of PA-6/ PP(80/20) blends by using of compatibilizers and it's water-absorption and friction properties.Three types of compatibilizers are PP-g-(MAH-co-St),PP-g-(GMA-co-St) and PP-g-(MMA-co-St),they are prepared by melt-grafting of the multi-monomers onto polypropylene(PP) and the blends are prepared by a twin-screw extruder,test samples are prepared by injection molding.The results shows that the effects of above compatibilizers on the water-absorption and tribological properties of PA6/PP blends are obviously and valuable,PA6/ PP-g-(GMA-co-St)/PP blends exhibits the optimum water-absorption and tribological properties.
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