长玻纤增强PP/PA6合金材料的性能  

Properties of Long Glass Fiber Reinforced PP/PA6 Alloy

作　　者：张超 徐洪耀[2] 夏建盟 罗忠富 刘纪庆 叶士兵 Zhang Chao;Xu Hongyao;Xia Jianmeng;Luo Zhongfu;Liu Jiqing;Ye Shibing(Shanghai KINGFA Sci & Tech Co. Ltd., Shanghai 201714, China;Department of Materials, Donghua University, Shanghai 201620, China)

机构地区：[1]上海金发科技发展有限公司,上海201714 [2]东华大学材料学院,上海201620

出　　处：《工程塑料应用》2017年第11期7-12,共6页Engineering Plastics Application

摘　　要：以连续长玻璃纤维为增强材料,以聚丙烯(PP)与尼龙(PA)6树脂为基体,以马来酸酐接枝PP(PP-g-MAH)作为相容剂,经过双螺杆挤出机和特制的浸润装置制备了长玻纤增强PP/PA6合金材料。通过常规力学性能、球压痕硬度、耐划伤、热变形温度等测试和微观结构分析,考察了PA6含量及其与PP-g-MAH质量比对合金材料强度、刚性、常低温冲击性能、硬度、耐刮擦以及耐热性能的影响。结果显示,当PA6/PP-g-MAH质量比为2,即PA6含量为10份,PP-g-MAH含量为5份时,合金材料的综合性能达到最佳;当PA6/PP-g-MAH质量比低于2时,PA6特性优势随着其含量增加而提升,而当PA6/PP-g-MAH质量比高于2时,相容剂不足以增容PP/PA6两相,综合性能有所衰减。所制备的长玻纤增强PP/PA6合金材料具有较好的强度、刚性、韧性、硬度以及更好的–40℃冲击性能,且其密度低,耐刮擦性能优异,在特殊领域如电动工具外壳具有广阔的应用前景。Long glass fiber reinforced PP/PA6alloys were prepared through the twin-screw extruder combined with a special infiltration device,using long glass fiber as reinforced material,PP/PA6as matrix,and a certain amount of maleic anhydride grafted polypropylene(PP-g-MAH)as compatibilizer.By measuring the common mechanical properties,the ball indentation hardness,scratch resistance,thermal deformation temperature and observing the microstructure,the effects of PA6content and the mass ratio of PA6/PP-g-MAH on the strength,rigidity,impact resistance at room and lower temperature,hardness,scratch resistance and heat resistance of the alloys were investigated.The results show that when the mass ratio of PA6/PP-g-MAH is2,that is10phr of PA6and5phr of PP-g-MAH,the alloy obtain the best overall performance.When the ratio is lower than2,the advantages of PA6are enhanced with the increase of PA6content,while the ratio is higher than2,the PP-g-MAH is not sufficient to compatibilize PP/PA6phases,which results in the decrease of the overall performance of alloy.The prepared long glass fiber reinforced PP/PA6alloy has good strength,rigidity,toughness,hardness and better impact resistance at-40℃,and has low density and excellent scratch resistance,which has a wide application prospect in special areas such as electric tool housing.

关 键 词：长玻纤 聚丙烯 尼龙6 增强 合金 力学性能 相容剂 

分 类 号：TQ327.1[化学工程—合成树脂塑料工业]