达克罗涂液制备中金属粉混合工艺的研究.pdf

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第 23 卷第 6 期电镀与涂饰 Vol. 23 No. 6

2004 年 12 月 Electroplating & Finishing Dec. 2004
达克罗涂液制备中金属粉混合工艺的研究
朱晓云1 , 杨恒1 , 郭忠诚2 , 蔡军1
(1. 昆明理工恒达科技有限公司,云南昆明 650093 ;
2. 昆明理工大学新材料与表面工程研究开发中心,云南昆明 650093)
摘要: 为提高达克罗涂层的性能,在制备达克罗涂液时,对金属粉进行混合工艺处理。介绍了金属粉混合处
理工艺,研究了混粉处理前后粉末性能指标以及所得达克罗涂层的性能。结果表明,混合处理后的粉末,颜色呈现均
匀的银灰色,粉体的松装密度降低,比表面积增大,2 种粉的漂浮值趋于一致。粉末易润湿分散,水面遮盖力提高到
6 000 cm2/ g。混合处理后的粉末配制的达克罗涂液易分散,搅拌时间短、抗降沉性好、遮盖力强。达克罗涂层耐盐雾
腐蚀时间延长,抗腐蚀性能显著提高。
关键词: 混合工艺; 锌粉; 铝粉; 达克罗涂层
中图分类号: TQ153. 15 ; TG179 ; TG174. 45 文献标识码: A 文章编号: 1004 - 227X(2004) 06 - 0012 - 03
Mixture process of metal powders in preparation of dacromet coating solutions
ZHU Xiao yun1 , YANG Heng1 , GUO Zhong cheng2 , CAI Jun1
(1. Kunming Hengda Science and Technology Co. Ltd , Kunming 650093 , China ;
2. New Materials and Surface Engineering Research &Development Center ,
Kunming University of Science and Technology , Kunming 650093 , China)
Abstract : To improve properties of dacromet coatings , a mixture process of metal powders was adopted in the
preparation of dacromet solutions. The mixture process of metal powders was introduced , and the properties of metal pow
ders with and without treatment of mixture process , as well as the obtained dacromet coating , were studied. Metal pow
ders after mixture treatment are silver grey. The bulk density of the mixed powders decreases and