摘要
考察了二聚酸对尼龙-66性能的影响,对共聚物进行了表征。结果表明加入二聚酸可降低尼龙-66的密度、熔点及吸水率,显著提高柔性和缺口冲击强度;但二聚酸加入量大时,增韧能力减弱。二聚酸的存在可促进共聚物的α、β晶相减少和细化,还可抑制酰胺基团的活性,有利提高尼龙-66的热降解温度和改善热稳定性。
The effects of dimer acid on the properties of nylon-66 are studied, and the copolymers are characterized.The addition of a small amount of dimer acid into nylon-66 can decrease its density ,melting point, and water absorption,and greatly increase the flexibihty and lzod notched impact strength, but a large amount of dimer acid will decrease the toughening ability for copolymers. Dimer acid can reduce the content of α and β crystal phases and improve their dispersion, and suppress the activity of amide groups. Those are good for the increase of thermal degradation temperature and the thermal stability of copolymers.
出处
《现代化工》
EI
CAS
CSCD
北大核心
2007年第12期36-39,共4页
Modern Chemical Industry
基金
江苏省科技攻关项目(BE2006322)
南京工业大学博士学位论文创新基金资助项目(BSCX200606)
关键词
尼龙-66
二聚酸
共聚改性
nylon-66
dimer acid
copolymerization modification
