Two-component UV-curable waterborne CO2-based polyurethane dispersion with outstanding flexibility

被引：6

作者：

Ding, Zhu ^{[1
]}

Chen, Jiahui ^{[1
]}

He, Zonglin ^{[1
]}

Wang, Chaozhi ^{[1
]}

Li, Hualin ^{[1
]}

Huang, Zhenhong ^{[1
]}

Liu, Baohua ^{[1
]}

Song, Lina ^{[1
]}

机构：

[1] Guangdong Univ Technol, Sch Mat & Energy, Guangzhou 510006, Guangdong, Peoples R China

来源：

JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH | 2023年 / 20卷 / 05期

基金：

英国科研创新办公室;

关键词：

UV-curable waterborne polyurethane; Two-component; Poly(propylene carbonate) diol; Flexibility; Acid and alkali resistance; ACRYLATES; COATINGS;

D O I：

10.1007/s11998-023-00763-w

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A series of two-component UV-curable waterborne CO2-based polyurethane dispersions (UV-PUDs) with excellent flexibility and mechanical strength were synthesized from poly(propylene carbonate) diol (PPCD), isophorone diisocyanate (IPDI), 2,2-bis(hydroxymethyl) propionic acid (DMPA), 2-hydroxyethyl acrylate (HEA), pentaerythritol triacrylate (PETA) and 1,4-butanediol (BDO). One component was UV-curable waterborne polyurethane terminated by HEA and PETA (molar ratio 1:1), and the other component was linear waterborne polyurethane. The content of the UV-curable component in UV-PUD was 15%, 30%, 45%, 60%, and 100% (weight content). The obtained cured films exhibited superior flexibility without loss of tensile strength, accompanied by excellent acid and alkali resistance. In particular, the dried UV-PUD films without curing showed good mechanical properties.

引用

页码：1569 / 1578

页数：10

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