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首页> 外文期刊>JCT >Epoxy thiol photolatent base clearcoats: curing and formulation
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Epoxy thiol photolatent base clearcoats: curing and formulation

机译：环氧硫醇光潜能基础清漆：固化和配制

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Photolatent base crosslinked epoxy thiol coatings were characterized using transmission FTIR spectroscopy, Raman spectroscopy, UV spectroscopy, and Vickers micro-hardness testing. Curing rate constants were calculated for a series of formulations with varying concentrations of photolatent-DBN, ITX (2-isopropyl thioxanthone), and BP (benzophenone), as well as varying curing times. A design of experiments demonstrated that increased UV dose had the greatest impact on increasing the curing rate of the clearcoat system. BP wt% proved to have little impact on the clearcoat curing rate, while PL-DBN and ITX exhibited minimal improvement above 2.5 wt% and 1 wt%, respectively. Vickers micro-hardness results showed that irradiation dose had no impact on the final physical properties of the clearcoat. However, a 24-h ambient post-cure proved to increase the final hardness of the clearcoat under some conditions.
机译：使用透射式FTIR光谱，拉曼光谱，UV光谱和维氏显微硬度测试对光潜碱交联的环氧硫醇涂层进行了表征。计算了一系列配方的固化速率常数，这些配方具有不同浓度的光潜伏DBN，ITX（2-异丙基噻吨酮）和BP（二苯甲酮），以及不同的固化时间。实验设计表明，增加紫外线剂量对提高透明涂料体系的固化速率影响最大。事实证明，BP wt％对透明涂层的固化速率影响很小，而PL-DBN和ITX分别在2.5 wt％和1 wt％以上显示出最小的改善。维氏显微硬度结果表明，辐照剂量对透明涂层的最终物理性能没有影响。但是，在某些条件下，经过24小时的环境后固化证明可以提高清漆的最终硬度。

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