金属粉末涂料的二步邦定工艺研究
Research on the Two-step Bonding Process for Metallic Powder Coatings
贺宇轩 1代江帆 1高祥 1钟家豪 1朱新平 1刘卫 1张辉1
作者信息
- 1. 广东西敦千江粉漆科学研究有限公司,广东佛山 528000
- 折叠
摘要
针对现有邦定工艺普遍存在金属闪光效果不强和金属闪光稳定性不高等问题,本研究提出二步邦定工艺.将原配方分为2份:一份提高树与固化剂用量并等比例减少填料等其他组分用量为一步底粉;将减少的填料等其他组分加入另一份并等比例减少树脂和固化剂用量为二步底粉.先将金属颜料与高树脂配方底粉65 ℃进行第1步邦定,再与低树脂配方底粉混合后65 ℃进行第2步邦定.结果表明:该工艺通过调控树脂固化剂比例与邦定条件,显著提升了金属稳定性.与2次65 ℃常规邦定工艺相比,二步邦定制备的样板在不同喷涂条件下ΔE平均值降低26％,显微镜下金属面积占比提升40％,有效增强金属闪光效果.该研究为优化金属粉末涂料邦定工艺提供了新的改进思路.
Abstract
To address the common problems of weak metallic-effect and low stability of metallic-effect in existing bonding processes,a two-step bonding process was developed to produce metallic-effect powder coatings in this work.The original formula was divide into 2 parts:the first part is to produce the first-step base powder(rich-resin base powder)by increasing the content of resin and curing agent and reducing the content of the fillers and other components;the second part is to produce the second-step base powder(less-resin base powder)by reducing the content of resin and curing agent and increase the content of the fillers and other components to maintain the original formula ratio.Metallic pigments were bonding with the rich-resin base powder at 65 ℃(the first-step bonding),then the products were bonding with the less-resin base powder at 65 ℃(the second-step).Experimental results demonstrated that this process significantly enhances the metallic stability by regulating the mass ratio of resin to curing agent and the bonding conditions.Compared to the control samples(conventional bonding at 65 ℃ twice),the two-step bonding process reduced the average ΔE of the final films by 26％under varying spraying conditions and increased the metallic area by 40％observed under optical microscope,effectively enhancing the metal flash effect.This study provides valuable optimization insights for improving the bonding process of metallic powder coatings.
关键词
金属粉末涂料/邦定工艺/二步底粉/稳定性/金属效果Key words
metallic powder coatings/bonding process/two-step base powder/stability/metallic-effect引用本文复制引用
出版年
2025
NETL
NSTL
万方数据