摘要
采用ＦＴ－ＩＲ、ＤＳＣ、ＷＡＸＤ、ＳＥＭ等方法对ＰＯＭ／ＣＯＰＡ共混物的微观结构进行分析，并测试其力学性能。结果表明，在ＰＯＭ／ＣＯＰＡ共混物中存在着氢键的相互作用，且氢键的相对强度随ＣＯＰＡ含量的增加而增大。ＣＯＰＡ的加入，使ＰＯＭ的熔点下降，结晶温度增高，微晶尺寸Ｌ１１０及晶胞参数有所增加。微晶尺寸Ｌ１１０控制在１０．８７～１３．４５ｎｍ之间时，可获得力学性能均衡的ＰＯＭ／ＣＯＰＡ共混物。
Polyoxymethylene/polyamide copolymer blends (POM/COPA) were obtained to enhance the notched impact strength of POM, which microstructures were analyzed with FT IR, DSC, WAXD and SEM techniques and mechanical properties were measured. The results showed that there are existed hydrogen bonds in the POM/COPA blends, and the higher COPA content, the higher the relative strength of hydrogen bond. Addition of COPA causes the decrease of T m of POM and increase of T c and the crystallite size L 110 and the cell parameters of the blend. Crystallite size L 110 between 10.87 nm and 13.45 nm lead to POM/COPA blends with good balance mechanical properties.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1996年第6期123-126,共4页
Polymer Materials Science & Engineering
基金
国家"八五"重点科技攻关项目
国家自然科学基金
关键词
聚甲醛
共聚尼龙
共混物
改性
增韧
polyoxymethylene, polyamide copolymer, blend, microstructure, mechanical property
