中国塑料2017，Vol.31Issue(4)：45-50,6.DOI:10.19491/j.issn.1001-9278.2017.04.009
金属粉末注射成型用催化脱脂黏结剂POM/PP共混物非等温结晶动力学研究
Study on Non-isothermal Crystallization Kinetics of Polyoxymethylene/Polypropylene Blends Used for Catalytic Skim Binder of Metal Powder Injection Molding
马赞赞 1吴盾 1刘春林 1曹峥 1陆颖 1周安1
作者信息
- 1. 常州大学材料科学与工程学院,江苏常州213164
- 折叠
摘要
Abstract
By utilizing the rapid degradation reaction characteristics of polyoxymethylene (POM)under an acidic atmosphere and the corrosion resistance of polypropylene (PP),POM/PP blends were employed as a major component of catalytic skim binder for metal powder injection molding.Crystallization behavior of POM/PP blends was investigated by DSC under the non-isothermal process,and their crystallization kinetics was studied by Jeziorny,Ozawa and Mo methods.The results indicated that the width of crystallization peak became broad and the crystallization peak temperature (Tc) decreased gradually withan increase of cooling rate.Tc of the blends was lower than that of pure POM at the same cooling rate.Jeziorny and Mo methods could well describe the non-isothermal crystallization of POM/PP blending system.However,Ozawa method is not applicable due to the occurrence of secondary crystallization.Moreover,the introduction of PP led to a decrease in crystallization rate but an increase in half crystallization time.This also resulted in a change in the nucleating and growing mechanism of POM domain,thus retarding its crystallization.关键词
聚甲醛/聚丙烯/非等温结晶/冷却速率Key words
polyoxymethylene/polypropylene/non-isothermal crystallization/cooling rate分类
化学化工引用本文复制引用
马赞赞,吴盾,刘春林,曹峥,陆颖,周安..金属粉末注射成型用催化脱脂黏结剂POM/PP共混物非等温结晶动力学研究[J].中国塑料,2017,31(4):45-50,6.
