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首页> 外文期刊>Journal of coatings technology and research >Study on photostabilization in situ of reactive hindered amine light stabilizers applied to UV-curable coatings
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Study on photostabilization in situ of reactive hindered amine light stabilizers applied to UV-curable coatings

机译：适用于紫外线固化涂料的反应性受阻胺光稳定剂的光稳定原位研究

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摘要

Four monomeric reactive hindered pipe-ridinol derivatives, such as 4-methacryloyl-1,2,2,6, 6-pentamethyl-piperidinyl (MPMP), 4-acryloyl-1,2,2,6, 6-pentamethyl-piperidinyl (APMP), 4-methacryloyl-2,2,6,6-tetramethyl-piperidinyl (MTMP), and 4-acry-loy1-2,2,6,6-tetramethyl-piperidinyl (ATMP), were applied as reactive hindered amine light stabilizers (r-HALS) in UV-curable coatings. The effect of r-HALS on the UV-curing kinetics of the UV-curable coatings of different monomers or oligomers has been previously investigated. Polymer coatings were prepared by means of UV-curing technology; experiments were conducted manually on photoaging indoors, monitoring the Yellowness Index (YI) in the photo-oxidation process, and adding r-HALS. The experiments were done to review its photoprotection effect on UV-cured coatings. Subsequently, they were compared with typical commercial HALS through parallel experiments to investigate the photooxidation aging mechanism of polymer coatings, and the effective concentration was determined from the changing circumstances of YI, thus comparing their differences in photostabilizing effect in situ of the polymer coatings.
机译：四种单体反应性受阻哌啶醇衍生物，例如4-甲基丙烯酰基-1,2,2,6，6-五甲基哌啶基（MPMP），4-丙烯酰基-1,2,2,6，6-五甲基哌啶基（ APMP），4-甲基丙烯酰基-2,2,6,6-四甲基哌啶基（MTMP）和4-丙烯酸-丙烯酸1-2,2,6,6-四甲基哌啶基（ATMP）作为反应性受阻胺紫外光固化涂料中的光稳定剂（r-HALS）。先前已经研究了r-HALS对不同单体或低聚物的可UV固化涂层的UV固化动力学的影响。聚合物涂料是通过紫外线固化技术制备的；在室内进行光老化的人工实验，在光氧化过程中监测黄度指数（YI）并添加r-HALS。进行实验以审查其对紫外线固化涂料的光保护作用。随后，通过平行实验将它们与典型的商用HALS进行比较，以研究聚合物涂层的光氧化老化机理，并根据YI的变化情况确定有效浓度，从而比较它们在聚合物涂层中原位光稳定作用的差异。

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  • 来源
    《Journal of coatings technology and research》 |2012年第4期|p.459-466|共8页
  • 作者

    Yongtao Zhang; Xiaoxuan Liu; Zhixian Dong; Yanyan Cui;

  • 作者单位

    Department of Polymeric Materials and Engineering, Faculty of Materials and Energy,Guangdong University of Technology, Guangzhou 510006,People's Republic of China;

    Department of Polymeric Materials and Engineering, Faculty of Materials and Energy,Guangdong University of Technology, Guangzhou 510006,People's Republic of China;

    Department of Polymeric Materials and Engineering, Faculty of Materials and Energy,Guangdong University of Technology, Guangzhou 510006,People's Republic of China;

    Department of Polymeric Materials and Engineering, Faculty of Materials and Energy,Guangdong University of Technology, Guangzhou 510006,People's Republic of China;

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  • 正文语种 eng
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  • 关键词

    reactive-HALS; yellowness index; photooxidation; photostabilization in situ; UV-curable coatings;

    机译：反应性HALS;泛黄指数光氧化原位光稳定化;紫外线固化涂料;

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