| 新型硫杂蒽酮类光引发剂在水性光固化涂料中的应用 |
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| 引用本文： | 王国建,卢良.新型硫杂蒽酮类光引发剂在水性光固化涂料中的应用[J].涂料工业,2012,42(4):59-63. |
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| 作者姓名： | 王国建 卢良 |
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| 作者单位： | 1. 先进土木工程材料教育部重点实验室(同济大学),上海200092;同济大学材料科学与工程学院,上海200092
2. 同济大学材料科学与工程学院,上海,200092 |
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| 摘 要： | 采用自行研制的硫杂蒽酮类光引发剂2-羟基-3-(2-硫杂蒽酮氧基)丙基三甲基氯化铵(TX2)引发水性聚氨酯丙烯酸酯(PUA)涂料在紫外光照射条件下固化。分别用FT-IR光谱法和凝胶含量法分析了光固化过程,同时还研究了干燥条件、光引发剂TX2的用量、助引发剂叔胺的类型、叔胺的用量对紫外光固化速度的影响。结果表明:TX2的光固化速度较快,在30 s内基本固化完全;涂料薄膜在光固化前要预先干燥除水,干燥温度为90℃;当TX2的用量为3.0%(质量分数),助引发剂N,N-二甲氨基苯甲酸乙酯(EDAB)的用量为2.0%时,可以得到较快的光固化速度。采用上述工艺和条件得到的固化膜硬度可达4H,附着力可达1级。
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| 关 键 词： | 硫杂蒽酮 水性光引发剂 光固化 应用 |
Application of a Novel Thioxanthone Based Photoinitiator in UV-Curable Waterborne Coating |
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| Wang Guojian
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Lu Liang.Application of a Novel Thioxanthone Based Photoinitiator in UV-Curable Waterborne Coating[J].Paint & Coatings Industry,2012,42(4):59-63. |
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| Authors: | Wang Guojian Lu Liang |
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| Affiliation: | 1.Key Laboratory of Advanced Civil Engineering Materials,Ministry of Education,Shanghai 200092,China; 2.School of Materials Science and Engineering,Tongji University,Shanghai 200092,China) |
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| Abstract: | A novel thioxanthone based photoinitiator 2-Hydroxy-3-(9-oxo-9H-thioxanth-en-2-yloxy)-propyl-trimethyl-ammonium chloride(TX2) was used in the UV-curing of waterborne polyurethane acrylic(PUA) coating.The UV-curing process was studied by FT-IR and the gel content analysis.The influence of dry condition,amount of photoinitiator TX2,co-initiator type and dosage on the curing rate was also investigated.The results showed that TX2 had good efficiency for UV-curing of PUA coating.The film of PUA coating should be dried at 90 ℃ before it was irradiated.In order to obtain better curing rate,Ethyl 4-dimethylaminobenzoate(EDAB) was selected as co-initiator.The optimal amount of TX2 and EDAB were 3.0% and 2.0%,respectively.The results of properties test of the cured film showed that hardness was 4H and adhesion grade 1. |
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| Keywords: | thioxanthone waterborne photoinitiator UV-curing application |
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