Polyurethane Dispersions Derived From Polycarbonatediols and m-Di(2-isocyanatopropyl)benzene

被引：18

作者：

Lee, Da-Kong ^{[1
]}

Yang, Zong-Da ^{[1
]}

Tsai, Hong-Bing ^{[1
]}

Tsai, Ruey-Shi ^{[2
]}

机构：

[1] Natl Ilan Univ, Dept Chem & Mat Engn, Ilan 260, Taiwan

[2] Ta Hwa Inst Technol, Dept Chem & Mat Engn, Hsinchu, Taiwan

来源：

POLYMER ENGINEERING AND SCIENCE | 2009年 / 49卷 / 11期

关键词：

PHYSICAL-PROPERTIES; AQUEOUS DISPERSION; PARTICLE-SIZE; CATIONOMERS; DMPA; IONOMER; H12MDI; FILMS;

D O I：

10.1002/pen.21477

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Aqueous polyurethane dispersions derived from various polycarbonatediols, m-di(2-isocyanatopropyl)benzene(TMXDI), and various carboxylic diols including dimethylol propionic acid (DMPA), dimethylol butyric acid (DMBA), and a carboxylic polycaprolactonediol (Placcel 205BA) were prepared by a method in which the dispersing procedure was modified to enhance the molecular weight. The NH2/NCO ratio during chain extension affected the molecular weight of the polyurethanes, significantly, and an optimum ratio of 0.67:1.0 was used. The molecular weight, particle size, tensile properties, and thermal properties of the polyurethane dispersions were investigated. The effect chemical structure of the polycarbonatediols on the properties shows no obvious trend, but the polyurethane dispersions derived from the carboxylic polycaprolactonediol exhibit smaller particle size and softer tensile properties when compared with those derived from DMPA and DMBA. POLYM. ENG. SCI., 49:2264-2268, 2009. (C) 2009 Society of Plastics Engineers

引用

页码：2264 / 2268

页数：5

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