Synthesis and properties of PUA waterborne UV-curable resinsChinese Full Text

QIAN Fan,ZHANG Xu-dong,HU Jun-bao,WU Jiao,HUANG Yi(College of Chemistry and Chemical Engineering,Hunan University,Changsha 410082,China)

Abstract: The photosensitive waterborne polyurethane-acrylate（PUA） emulsion was synthesized using isophorone diisocyanate（IPDI）,polyether binary alcohol（DL-1000） dimethylol propionic acid（DMPA） and hydroxyethyl methacrylate（HEMA） as main materials.The emulsion structure was characterized by IR.The waterborne ultraviolet（UV） curable resin was obtained by mixing the emulsion with reactive diluent tripropylene glycol diacrylate（TPGDA） and photoinitiator.The effects of each components of the formula and UV curing conditions on the film properties were investigated by the film property tests.The results indicate that the optimum conditions were as followed: DMPA dosage 5.5%-6.0%,molar ratio of NCO/OH 1.55∶ 1,TPGDA amount 10%,photoinitiator TPO4%（based on the total resin weight） and the irradiation time 7.0 s.The appearance,storage stability and yellowing resistance of PUA resin obtained under the conditions were good,and the coatings had the best overall performance.

Keywords：

polyurethane-acrylate; UV-curable; waterborne resin; synthesis; coating; yellowing resistance;

DOI：
10.13650/j.cnki.rgxsz.2011.05.005
Series：
Subject：
Classification Code：
TQ316.33

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Synthesis and properties of PUA waterborne UV-curable resinsChinese Full Text

QIAN Fan,ZHANG Xu-dong,HU Jun-bao,WU Jiao,HUANG Yi(College of Chemistry and Chemical Engineering,Hunan University,Changsha 410082,China)

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