摘要
研究了不同成核剂对尼龙66结晶及力学性能的影响。结果表明,成核剂的加入使尼龙66结晶速率加快,结晶温度提高,重熔融过程出现双峰,其低温峰值比尼龙66峰值低8℃,可能是生成β晶所致,成核剂使尼龙66的结晶变细。不同成核剂对尼龙66的力学性能有不同的影响,其中成核剂G23、G205、MgO使尼龙66的强度提高;CaF2使其韧性增加;滑石粉的效果介于其间。
The influences of different nucleating agents on crystalline and mechanical properties of nylon 66 were studied.The results showed that nylon 66 crystallized easier and faster,and its (isothermal) crystallized morphology changed from sperulite to even crystal grain by addition of (nucleating) agent.The DSC curves of nylon 66 during the second melting process took on two melting peaks,the peak sited on the lower temperature might be caused by the generation of β crystal.Different nucleating agents had different effects on the mechanical properties of nylon 66.The strength of nylon 66 increased by adding G23、G205 and MgO.The toughness of nylon 66 increased by adding CaF_2.The effect of Talc was between those two kinds of nucleating agents.
出处
《塑料》
CAS
CSCD
北大核心
2005年第3期38-40,80,共4页
Plastics
基金
河南省杰出人才创新基金资助项目(0421001400)。
关键词
成核剂
尼龙66
力学性能
结晶性能
nucleating agent
nylon 66
mechanical property
crystalline property
