Waterborne epoxy resin coatings need to go through the pre-dispersion of pigments and fillers, grinding, filtration, paint making, filtration and packaging. Fully wet and pre-disperse pigments and fillers through a high-speed disperser, and then grind the paint slurry in a sand mill until the fineness meets the process requirements.
Water-based epoxy resin coatings are a combination of water and polymer dispersions. In order to obtain better coating performance, it is often necessary to add a variety of surfactants. However, under the interaction of different additives, it is also possible result in loss of stability. The order in which the paint is made is very important.
For the coating performance test of waterborne epoxy resin coatings, it can be tested from several aspects such as coating appearance, solid content, viscosity, fineness, curing time, adhesion, impact resistance, acid resistance, alkali resistance and salt resistance. . Relevant test methods can refer to the current standards of coatings.
The water-based epoxy resin coating performance testing instruments recommended by NBCHAO for users include: telling disperser, sand mill, paint film impactor, pencil Hardness Tester, Tu-4 cup, and scraper Fineness Meter, etc. Of course, electronic balances, ovens, pH meters, etc. commonly used in some laboratories will not be described.
