软段结构对聚氨酯性能影响的研究  

Studies on the Influence of Soft-segment Structure on the Properties of Polyurethane Adhesive

作　　者：朱永群[1] 黄亦军[1] 胡巧玲[1] 傅晏彬[2] 俞晓薇[1] 

机构地区：[1]杭州大学化学系,杭州310028 [2]中国计量学院

出　　处：《高等学校化学学报》1997年第5期807-812,共6页Chemical Journal of Chinese Universities

基　　金：浙江省科委应用基础研究资助

摘　　要：用熔融缩聚法合成了已二酸系和已二酸／芳香二酸混合酸系两个系列的聚酯；用溶液一步法将部分聚酯与MDI反应，形成一系列聚酯型聚氨酯．以化学分析、VPO、IR、DSC、WAXD、力学拉伸等手段对聚酯和聚氨酯进行了表征；讨论了软段聚酯的结构对聚氨酯的结晶性、耐热性、粘结性等性能的影响．Two series of polyesters were synthesized from adipic acid(AA), dimethyl terephthalate (DMT), isophthalic acid (IPA), phthalic anhydride (PA), with ethylene glycol (EG),butylenediol- 1, 4 (1, 4-BDO), propanediol-1, 2 (1, 2-PDO ), hexanediol-1, 6 (1, 6-HDO ) and diethylene glycol(DEG) respectively by using melt-polycondensation method in the presence of H,PO4, SnCl2. 2H2O, CH3 SO3H, as catalyst respectively. The technological conditions of the polyesters synthesized were studied. This polyesters react separately with diphenylmethane diisocyanat (MDI) by solution polymerization to afford two series of linear block polyurethane adhesives. The crystallinity and the melting point of the polyesters and polyurethanes were determined by means of X-ray diffraction (WAXD), differential scanning calorimetry (DSC )- The relationship between structure and properties of the Polyesters, expecially the influence of the polyesters type on adhesion behavior of the corresponding tl1e polyurethanes were discussed.

关 键 词：聚酯 聚氨酯 软段结构 PEU 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]