共查询到18条相似文献,搜索用时 140 毫秒
1.
2.
3.
针对铝型材丙烯酸阳极电泳涂料,探讨了槽液固体含量、电泳电压、电泳时间、槽液pH等因素对漆膜外观和厚度的影响,确定了电泳涂装的最佳工艺参数:固体分5%~6%,电压120 V,电泳时间80~100 s,电泳槽液pH 7.6~8.1。 相似文献
4.
本文着重介绍了丙烯酸类透明阴极电泳涂料的制备方法及其性能与应用,试验结果表明,其制备工艺简单,槽液稳定,涂膜性能优良,应用前景广阔。 相似文献
5.
针对铝型材丙烯酸阳极电泳涂料,探讨了漆液固体含量、电泳电压、电泳时间、漆液pH等电泳涂装因素对涂膜外观和厚度的影响,确定了电泳涂装的最佳工艺参数为:固体份5%~6%,电压120 V,电泳时间80~100s,电泳槽液pH控制7.6~8.1. 相似文献
6.
7.
针对自行开发合成的铝型材丙烯酸阳极电泳涂料,探讨了漆液固体含量、电泳电压、电泳时间、漆液pH、助溶剂等电泳涂装因素对涂膜外观和厚度的影响。 相似文献
8.
9.
利用一种分散剂涂易乐Disper-CED制备了汽车阴极电泳涂料用颜料浆,同时也用不同汽车涂料厂家提供的电泳涂料用分散树脂制成了传统的阴极电泳涂料用颜料浆。通过对比几种颜料浆的ζ电位、离心稳定性、黏度和耐腐蚀性,可以发现制得的无树脂阴极电泳涂料用颜料浆可以满足阴极电泳涂料槽液的要求;这种无树脂阴极电泳涂料用颜料浆配方成本更低,性能稳定,可以作为树脂分散阴极电泳涂料用颜料浆的替代方案。 相似文献
10.
11.
12.
13.
14.
15.
介绍厂丙烯酸酯类、聚偏二氯乙烯(PVDC)和环氧树脂类的自泳涂料制备技术及漆膜性能,探讨了自动沉积槽液的配制和涂装工艺。对PVDC类自沉积涂料,不用含铬化合物反应型浸渍,漆膜耐盐雾可达600h以上。自泳涂装是继阴极电泳后在金属表面涂装的一种新型技术。 相似文献
16.
17.
18.
One of the most important factors in corrosion prevention by protective coatings is the coating adhesion loss under environmental influence. Thus, adhesion strength is often used when characterizing protective properties of organic coatings on a metal substrate. In order to improve the adhesion of organic coating the metal substrate is often pretreated in some way. In this work, the adhesion of polyester coatings on differently pretreated aluminium surface (by anodizing, with and without sealing, by phosphating and by silane film deposition) was examined. The dry and wet adhesion of polyester coatings were measured by a direct pull-off standardized procedure, as well as indirectly by NMP test. It was shown that under dry test conditions all polyester coatings showed very good adhesion, but that aluminium surface pretreated by silane film showed superior adhesion. The overall increase of wet adhesion for polyester coating on aluminium pretreated by silane film was maintained throughout the whole investigated time period. The different trends in the change of adhesion of polyester coatings were observed for different aluminium pretreatments during exposure to the corrosive agent (3% NaCl solution). The highest adhesion reduction was obtained for polyester coating on aluminium pretreated with phosphate coating. The corrosion stability of polyester coated aluminium was investigated by electrochemical impedance spectroscopy in 3% NaCl solution. The results confirmed good protective properties of polyester coating on aluminium pretreated with silane film, i.e. greater values of pore resistance and smaller values of coating capacitance were obtained in respect to other protective systems, whereas charge-transfer resistance and double-layer capacitance were not measurable during 2 months of exposure to a corrosive agent. 相似文献