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[目的]改善以无机树脂为主体的车间底漆施工性欠佳、流平性不好和后续涂层配套性差的不足。[方法]研究了环氧树脂分子量、不同环氧树脂的用量、胺固化剂中活泼氢与环氧树脂中环氧基团的物质的量比(简称H/E比)及助溶剂配比对漆膜干燥性和耐候性的影响。[结果]当环氧树脂的分子量不低于1 000时能获得较好的干燥性能，且分子量分别为1 000和3 000的两种环氧树脂的质量比在2∶1到1∶1之间，同时控制H/E比在0.85左右，锌含量为40%，慢干溶剂丙二醇丁醚与快干溶剂丙二醇甲醚的质量比为1∶2时，所得漆膜的干燥时间不超过4 min，耐候性达到13个月。[结论]该底漆具有较好的综合性能，能满足车间防腐的要求。
Abstract：[Objective] To address the poor applicability, leveling performance, and subsequent coating compatibility of inorganic resin-based shop primer. [Method] The effects of epoxy resin molecular weight, dosage of different epoxy resins, molar ratio of active hydrogen in amine hardener to epoxy groups(referred to as the H/E ratio), and proportions of co-solvents on film drying and weathering resistance were studied. [Result] The primer formulated with an epoxy resin having a molecular weight of not less than 1 000 exhibited good drying performance. Optimal performance was achieved when the mass ratio of epoxy resins(molecular weight 1 000 and 3 000) between 2:1 and 1:1, H/E ratio around 0.85, zinc content of 40%, and mass ratio of slow-drying solvent propylene glycol butyl ether(PNB) to fast-drying solvent propylene glycol methyl ether(PM) at 1:2. The resulting primer exhibited a drying time of less than 4 min and a weathering resistance of 13 months. [Conclusion] The primer has good comprehensive performance, meeting the requirements for workshop anticorrosion applications.
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基本信息:
DOI：10.19289/j.1004-227x.2025.09.017
中图分类号:TQ630.7
引用信息:
[1]彭亮,刘瑞清,张博晓.快干型水性环氧车间底漆的制备与性能[J].电镀与涂饰,2025,44(09):133-137.DOI:10.19289/j.1004-227x.2025.09.017.
基金信息: