混合纤维对尼龙66的增刚研究

以尼龙66（PA66）为基体,研究和分析玻璃纤维和碳纤维混杂对尼龙66增刚的影响.固定玻璃纤维质量分数为24.6%,改变碳纤维的质量分数,将玻璃纤维（GF）、碳纤维（CF）先用硅烷偶联剂KH550进行表面处理,用双螺杆挤出造粒和注塑成型方式制备GF/CF增刚PA66复合材料,对试样进行拉伸模量、拉伸强度、弯曲模量、弯曲强度、缺口冲击强度等性能测试,并利用扫描电镜分析复合体系的冲击断面特征.研究结果表明：GF/CF混合纤维对PA66具有很好的增刚效果.

Study on Hybrid Fiber Reinforcing Stiffness of Nylon66

Polyamide66 was used as basic material,and researched and analyzed how the mixed fiber（GF and CF） influenced on the stiffness of the nylon66.The content of GF was 24.6 %,changed the content of CF.Firstly the surfaces of GF and CF were treated with si-alkane coupling agent KH550,and PA66 /GF/CF composites were prepared by a twin-screw extrusion and injection molding process.The composites properties such as： tensile modulus,tensile strength,flexural modulus,flexural strength,notched impact strength were studied.The impact fracture characteristic of composites were analyzed by using scanning electron microscope.The results show that the stiffness of the PA66 /GF/CF appears the good reinforcement.