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紫外光固化聚氨酯丙烯酸酯树脂的流变行为 被引量:9
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作者 张洁 张可达 《功能高分子学报》 CAS CSCD 2000年第2期199-203,共5页
合成了一系列紫外光固化聚氨酯丙烯酸酯聚合物 ,研究了分子量、原料配比、反应方式、含水量、溶剂等对其流变行为的影响。实验表明 ,控制齐聚物分子量 ,干燥原料 ,以HEA先与异氰酸酯反应的加料方式合成的树脂 ,流动性较好。在此基础上... 合成了一系列紫外光固化聚氨酯丙烯酸酯聚合物 ,研究了分子量、原料配比、反应方式、含水量、溶剂等对其流变行为的影响。实验表明 ,控制齐聚物分子量 ,干燥原料 ,以HEA先与异氰酸酯反应的加料方式合成的树脂 ,流动性较好。在此基础上合成了较好流动性和光固化性能的蓖麻油紫外光固化树脂。 展开更多
关键词 聚氨酸丙烯酸酯 紫外光固化树脂 流变性 蓖麻油
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Incorporation of Reactive Corrosion Inhibitor in Waterborne Acrylic Polyurethane Coatings and Evaluation of its Corrosion Performance 被引量:2
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作者 顾林 丁纪恒 +1 位作者 刘栓 余海斌 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2016年第2期271-278,I0002,共9页
Hydroxyl-epoxy phosphate (HEP) as a reactive corrosion inhibitor was innovatively synthe- sized by the reaction of bisphenol A epoxy resin with phosphoric acid. HEP was mixed with hydroxyl acrylate resin, and crossl... Hydroxyl-epoxy phosphate (HEP) as a reactive corrosion inhibitor was innovatively synthe- sized by the reaction of bisphenol A epoxy resin with phosphoric acid. HEP was mixed with hydroxyl acrylate resin, and crosslinked with waterborne isocyanate curing agent, which was used to form waterborne HEP/acrylic polyurethane composite (HEP-APU) coatings on Q235 steel surfaces. Electrochemical impedance spectroscopy and polarization curves were applied to analyze the corrosion behavior of the HEP-APU coatings in 3.5wt% NaCl solutions. The results indicated that the HEP-APU coatings show a superior passivation property and efficient corrosion protection of Q235 steel. The waterborne acrylic polyurethane coating containing 0.5wt% HEP exhibited the best corrosion performance among all the coating specimens. The improved flash-rust resistance can be attributed to the introduction of the phosphate group which could form phosphate film on the steel substrate. 展开更多
关键词 Hydroxyl-epoxy phosphate Acrylic spectroscopy Corrosion performance Passivation polyurethane Electrochemical impedance
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Preparation and Characterization of Two-component Waterborne Polyurethane Comprised of Water-soluble Acrylic Resin and HDI Biuret 被引量:50
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作者 周新华 涂伟萍 胡剑青 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2006年第1期99-104,共6页
A two-component waterborne polyurethane(2K-WPU) was prepared by mixing water-soluble acrylic resin and hexamethylene diisocyanate biuret, and then diluted for phase inversion with water. Compared with water-soluble ac... A two-component waterborne polyurethane(2K-WPU) was prepared by mixing water-soluble acrylic resin and hexamethylene diisocyanate biuret, and then diluted for phase inversion with water. Compared with water-soluble acrylic resin, the phase inversion of 2K-WPU occurs at lower water content. It is indicated by TEM that 2K-WPU parti-cles show a core-shell structure, in which HDI biuret is encapsulated by hydrophilic acrylic resin. 2K-WPU emulsion with HDI biuret has larger particle size and narrower distribution index, while for 2K-WPU emulsion with HDI iso-cyanurate, the latex not only has large particle size, but also has two-peak distribution. FTIR shows that the reaction be-tween HDI biuret and acrylic resin can complete in 12h. In addition, studies on effect of composition of acrylic resin on performance of 2K-WPU show that narrowing the polar difference between water-soluble acrylic resin and HDI biuret and improving the miscibility of two components are the key to prepare the transparent and high gloss films with high crosslinking density. 展开更多
关键词 waterborne polyurethane TWO-COMPONENT acrylic resin phase inversion
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