摘要
采用自制端羧基超分散剂(ECH)改性剑麻纤维(SF)/聚丙烯(PP)复合材料,探讨了ECH的使用对SF/PP复合材料的力学性能、热力学性能和结晶性能的影响,并采用扫描电镜(SEM)观察复合材料的冲击断面形貌。结果表明,经ECH改性后的SF/PP复合材料的冲击强度、弯曲强度分别比未改性的复合材料提高了67.3%和21.0%,复合材料的热稳定性、PP相的结晶速率和结晶度有所提高,但晶态结构仍是典型的α晶型,ECH的加入使得复合材料的储能模量提高,损耗因子降低。
End-carboxyl hyperdispersant （ECH） was synthesized and used to modified sisal fiber（SF）/polypropylene （PP） composites. The effects of ECH on mechanical properties, thermal properties, crystallization of SF/PP composites were discussed, and the impact fracture surface of SF/PP composites was observed with scanning electron microscopy （SEM）. The results show that the impact strength and flexural strength of the SF/PP composites modified with ECH are higher than those of unmodified system, which increases by 67.3% and 21.0%, respectively. And the thermal stability of the composites, crystallization rate and degree of crystallinity of PP increase. The crystalline structures of PP are still typical a crystal form. With addition of ECH, the storage modulus of the SF/PP composites increases, but the loss factor is decreased.
出处
《现代塑料加工应用》
CAS
北大核心
2012年第2期35-38,共4页
Modern Plastics Processing and Applications
基金
国家自然科学基金项目(51163004)
广西科技攻关项目(0992022-4)
广西自科基金项目(0991003Z
0842003-4A)
关键词
聚丙烯
剑麻纤维
端羧基超分散剂
复合材料
力学性能
势力学性能
结晶性能
polypropylene
sisal fiber
end-carboxyl hyperdispersant
composites
mechanical properties
thermal properties
crystallization
作者简介
作者简介：罗崇禧，硕士研究生，研究方向为聚合物共混改性及成型加工。E-mail：77852850@qq．com。
通讯联系人，E—mail：gllushaorong@glite．edu．cn。
