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。
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.
出处
《中国塑料》
CAS
CSCD
北大核心
2006年第6期64-68,共5页
China Plastics
基金
国家自然科学基金(19632004
10172074)广东省自然科学基金(980573
0401154)
关键词
碳酸钙
聚丙烯
发泡板材
力学性能
泡孔结构
CaCO3
polypropylene
foamed sheet
mechanical property
cell structure