What is a water-based coating?

China Paint Network
News: You do not know
water-based paint
! Very important science: what is water-based
paint
? Environmental protection decoration and another savior, about water-based paint those things! Let's get to know it.
as the name implies, water-based coatings to water as a solvent, resulting in its VOC content is much lower than
paint
, for the entire ecological environment will not cause damage.the official explanation of
is: water dilution paint refers to the post-emulsified emulsion for the film preparation of the coating, so that solvent-based resin dissolved in organic solvents, and then with the help of emulsions by strong mechanical stirring resin dispersed in the water to form emulsion, called post-emulsified emulsion, made of paint can be diluted with water during construction. Water dispersion coating mainly refers to the synthetic resin emulsion for the film preparation of the coating.
water as a medium, water-based coatings can be used in home installations, interior
wall coatings
, metal coatings,
automotive coatings
and so on, the application is very wide.
1. The first category is acrylic as the main component of
water-based wood paint
, the main feature is good adhesion, will not deepen the color of the wood, but wear resistance and chemical resistance is poor, paint film hardness is softer, pencil law test for HB, poor plumpness, comprehensive performance in general, construction prone to defects. Because of its low cost and low technical content, it is the main product that most water-related paint enterprises bring to market. This is also the reason why most people think that water-like paint is not good. The advantage is that it is cheap.
2. The second category is acrylic and polyurethane synthesis as the main component of the water-based
wood paint
, its characteristics in addition to adhering to the characteristics of acrylic paint, but also added wear resistance and strong chemical resistance characteristics, some enterprises marked as water-based polyester paint. Paint film hardness is better, pencil law test for 1H, plumpness is better, comprehensive performance is close to oily paint. At present, only a few enterprises in China can produce.
3. The third category is polyurethane water-based paint, its comprehensive performance is superior, high plumpness, paint film hardness can reach 1.5-2H, wear resistance even more than oily paint, service life, color deployment have obvious advantages, for water-based paint in the advanced products, the technology in the world only a few professional companies master.
26, 2015, with the approval of the State Council, a consumption tax on coatings will be levied from February 1, 2015. According to the New Deal, batteries and coatings will be included in the scope of consumption tax collection, in the production, commissioned processing and import links, the applicable tax rate is 4%. The consumption tax is exempted for coatings containing less than 420 g/L (including) volatile organic compounds (VOCs) in the construction state.
since the water-based paint environmental protection performance is superior, how to choose it? Maverick decoration reminder: poor quality water-based paint its water solution is more cloudy, floating more.
1. Look at the paint particles, take a small amount of paint into the water, gently stir, observe whether the water is still clear, whether the paint particles are uniform size, in the clear water is relatively independent, there is no bonding phenomenon. Poor quality paint will be cloudy immediately after stirring, particle size is not equal. Good water-based paint should not drop powder, with a certain degree of wash resistance, can be scrubbed with water, wiped by a damp cloth, the color is still bright as new.
2. Most importantly, look at the test report, the product must comply with the "synthetic resin emulsion coating national standard" and "interior decoration materials
built-in wall paint
hazardous substances limit standards" requirements, testing institutions must be approved by the State Administration of Technical Supervision, with CMA testing marks.