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PP／纳米CaCO₃发泡板材的性能和泡孔结构的研究

Properties and Cell Structures of PP/Nano-CaCO₃ Foamed Sheet

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【Author】 CHEN Zai-liang,CAI Ye-bin,WANG Chuan-yang,PENG Yu-cheng (College of Mechanical and Electrical Engineering, Soochow University, Suzhou 215021, China;College of Industrial Equipment and Control Engineering, South China University of Technology, Guangzhou 510641, China)

【机构】苏州大学机电工程学院；华南理工大学工业装备与控制工程学院；华南理工大学工业装备与控制工程学院江苏苏州； 215021；广东广州； 615041；江苏苏州；

【摘要】利用纳米CaCO3对聚丙烯(PP)的增强增韧作用,采用合理的成型工艺及设备,挤出成型了性能优越的发泡板材。详细研究了CaCO3粒子对板材力学性能的影响,研究表明:纳米CaCO3粒子的含量接近4％时(相对PP), 粒子在基体中的分散良好,复合材料的拉伸强度和冲击强度达到最大值;纳米粒子是否经过表面处理,只对材料冲击强度的影响产生不同效果;微米CaCO3粒子含量小于5％时(相对PP),对板材的性能影响很小,但超过该含量后,板材的性能明显下降。更多还原

【Abstract】 Nano-CaCO3/polypropylene (PP) foamed sheet was obtained via extrusion. Effects of nano CaCO3 on mechanical properties were investigated. When the content of nano CaCO3 was near 4 phr, both tensile and impact strength showed a maximum. In contrast, the micro CaCO3 had little effect on the mechanical properties when its content was lower than 5 phr, however, strong negative effect above that.更多还原