Properties of waterborne polyurethanes based on polycarbonate diol reinforced with organophilic clay

被引：18

作者：

Jeong, HM ^{[1
]}

Jang, KH

Cho, KW

机构：

[1] Univ Ulsan, Dept Chem, Res Ctr Machine Parts & Mat Proc, Ulsan 680749, South Korea

[2] Pohang Univ Sci & Technol, Inst Adv Funct Polymers, Dept Chem Engn & Polymer Res, Pohang, South Korea

来源：

JOURNAL OF MACROMOLECULAR SCIENCE-PHYSICS | 2003年 / B42卷 / 06期

关键词：

waterborne polyurethane; organophilic clay; nanocomposite; mechanical properties; water swell; thermal resistance; transparency;

D O I：

10.1081/MB-120024818

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Nanocomposite of waterborne polyurethane (PU) based on poly(hexamethylene carbonate) diol reinforced by organophilic clay was prepared. Exfoliation of silicate layer in PU was confirmed by x-ray diffraction pattern and transmission electron microscopy. Reinforcing effect of clay was examined by observing dynamic mechanical properties, tensile properties, and shore A hardness. The modulus increased as the content of clay in PU matrix was increased, and this increase was more evident when the PU matrix becomes soft at the temperature range above the glass transiton temperature of soft segment. Water swell was decreased and thermal resistance was increased as the content of clay was increased. Reduction of transparency by added clay was marginal.

引用

页码：1249 / 1263

页数：15

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