摘要
采用共混法制备了聚丙烯/纳米氧化铈（PP/nano-Ce O2）复合材料,研究了nano-Ce O2用量对PP/nanoCe O2复合材料结晶性能和力学性能的影响。结果表明：nano-Ce O2对PP具有明显的异相成核作用,提高了PP/nano-Ce O2复合材料的熔融温度和相对结晶度,其熔融温度提高了2~3℃,相对结晶度提高了4%~8%;PP/nano-Ce O2复合材料的断裂强度和屈服强度随着nano-Ce O2用量的增加先提高后降低,在nano-Ce O2用量为1份时达到最大值;复合材料的断裂伸长率和断裂功随着nano-Ce O2用量的增加逐渐下降,而其冲击强度随着nano-Ce O2用量的增加先提高后降低。
PP/nano-cerium oxide composites were prepared by blending method. The effects of nano-Ce O2 content on crystallization and mechanical properties of PP/nano-Ce O2 composites were studied. The results show that nano-Ce O2 has obviously effect on heterogeneous nucleation of PP, and the melting temperature increases by 2~3℃ and the relative crystallinity increases by 4%~8% by adding nano-Ce O2. The break strength and yield strength of PP/nano-Ce O2 composites increases first and then decreases with the increasing content of nano-Ce O2, and the break strength and yield strength can reach the maximum rate when nano-Ce O2 content is 1 phr. The elongation at break and work of fracture of PP/nano-Ce O2 composites decreases with the increasing. The impact strength also increases first and then decreases with the increasing content of nano-Ce O2.
出处
《塑料科技》
CAS
北大核心
2015年第8期33-37,共5页
Plastics Science and Technology
基金
河南省教育厅科学技术研究重点项目(14A150016)
河南理工大学博士基金(B2012-052)
河南煤矿安全生产项目(H12-082)
关键词
聚丙烯
纳米氧化铈
结晶性能
力学性能
冲击强度
Polypropylene
Nano-cerium oxide
Crystallization properties
Mechanical properties
Impact strength
