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Soy-based UV-curable thiol-ene coatings

机译:大豆基紫外线可固化硫醇烯涂料

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摘要

Novel soy-based thiols and enes were synthesized and characterized. Then, soy-based thiol-ene UV-curable coatings were formulated and their coating physiochemical properties were investigated in detail. The use of biorenewable resources, combined with environmentally friendly UV-curable technology, provides a "green + green" solution to the stricter regulations in the coatings industry. Novel soy-based thiols and enes were synthesized through the Lewis acid-catalyzed ring opening reaction of epoxidized soybean oil with multifunctional thiols or hydroxyl functional allyl compounds. FTIR and NMR confirmed the formation of the target compounds. The soy-based thiols and enes were formulated with petrochemical-based enes and thiols, respectively, to make thiol-ene UV-curable coatings. Typical coating film properties, thermal properties, and photopolymerization kinetics of these coatings were studied. Soy-based thiol-ene coatings having lower functionality thiols and enes have poor UV curability and coating properties, which was attributed to the lower crosslink density. Soy-based thiols and enes with higher functionality can be UV-cured in combination with petrochemical-based enes or thiols even without the presence of free radical photoinitiators. Better coating film properties were obtained from these higher functionality thiol-ene systems that were toughened by commercial hyper-branched acrylates.
机译:合成并表征了基于大豆的新型硫醇和烯。然后,配制了基于大豆的硫醇-烯紫外线固化涂料,并详细研究了其涂料的理化性质。生物可再生资源的使用,结合环保的紫外线固化技术,可为涂料行业的严格法规提供“绿色+绿色”解决方案。通过路易斯酸催化环氧大豆油与多官能硫醇或羟基官能烯丙基化合物的开环反应,合成了新型的大豆基硫醇和烯。 FTIR和NMR证实了目标化合物的形成。分别将基于大豆的硫醇和烯与基于石油化学的烯和硫醇配制,以制备硫醇-烯可UV固化的涂料。研究了这些涂料的典型涂膜性能,热性能和光聚合动力学。具有较低官能度的硫醇和烯的大豆基硫醇-烯涂层具有较差的UV固化性和涂层性能,这归因于较低的交联密度。具有较高官能度的大豆基硫醇和烯烃可以与石化基烯烃或硫醇结合使用,即使没有自由基光引发剂也可以进行紫外线固化。从这些更高官能度的硫醇-烯体系获得了更好的涂膜性能,这些体系已通过商品化超支化丙烯酸酯进行了增韧。

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  • 来源
    《JCT》 |2010年第5期|p.603-613|共11页
  • 作者单位

    Center for Nanoscale Science and Engineering, North Dakota State University, PO Box 6050, Fargo, ND 58108, USA;

    rnCenter for Nanoscale Science and Engineering, North Dakota State University, PO Box 6050, Fargo, ND 58108, USA Department of Coatings and Polymeric Materials, North Dakota State University, PO Box 6050, Fargo, ND 58108, USA;

    rnCenter for Nanoscale Science and Engineering, North Dakota State University, PO Box 6050, Fargo, ND 58108, USA;

    rnCenter for Nanoscale Science and Engineering, North Dakota State University, PO Box 6050, Fargo, ND 58108, USA;

    rnCenter for Nanoscale Science and Engineering, North Dakota State University, PO Box 6050, Fargo, ND 58108, USA;

    rnCenter for Nanoscale Science and Engineering, North Dakota State University, PO Box 6050, Fargo, ND 58108, USA;

    rnCenter for Nanoscale Science and Engineering, North Dakota State University, PO Box 6050, Fargo, ND 58108, USA Department of Coatings and Polymeric Materials, North Dakota State University, PO Box 6050, Fargo, ND 58108, USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    biobased; soybean oil; UV curable; coating; thiol-ene;

    机译:生物基豆油;紫外线固化;涂层;硫醇;

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