The development of water-based paint
Basic understanding
Paint has become a popular thing among consumers, and it has become a very common thing. Many consumers know very little about paint, including some bosses who have been selling paint for more than a decade are not very aware of the dangers of paint. Paint can only be checked after one month after painting. Consumers think that the paint is not toxic at this time. In fact, this is wrong. There is no irritating odor. Only formaldehyde volatilizes to the extent acceptable to human physiology, and the paint cures. The benzene, toluene, and free TDI contained in the agent and diluent are still volatilized. It takes at least several decades for these things to completely evaporate. These aromatic hydrocarbon substances have intellectual development for infants and unborn children. Greatly affected, free TDI is also a carcinogenic hazard, and the use of paint has long been banned in developed countries in Europe.
development stage
In general, water-based paint technology has experienced three main stages:
The first generation of water-based paints uses acrylic acid as the main raw material, which has the advantages of water resistance and weather resistance, and is the main product that the water-based paint manufacturers have introduced to the market. Its shortcomings are general performance, low chemical properties (such as poor resistance to alcohol and alkali), low physical indexes such as hardness and wear resistance, which is why most people think that water-based paint is not good.
The second generation of water-based paints is mainly composed of acrylic acid and water-based polyurethane. It not only inherits the advantages of weather resistance and construction tolerance of the first-generation acrylic products, but also improves the hardness of water-based paints, but the chemical properties are still low. At present, there are only a few companies in China that can produce, and it is a mid-range product in water-based paint.
The third-generation water-based paint uses acrylic-modified water-based polyurethane as the main raw material. On the basis of the second-generation water-based paint product, the comprehensive performance of the product is greatly improved. The pencil rule can test the hardness to more than 2H, which fully meets the needs of Nissan. The wear resistance even exceeds that of oily paint. It has obvious advantages in service life and color matching. More importantly, the chemical properties are stable, and the alcohol and alkali resistance are greatly enhanced compared with the former two. It is a high-grade product in water-based paint. It is monopolized by a few manufacturers at home and abroad.
Although the water-based paint has the advantages of good environmental protection paint film, the one-component water-based paint has a certain difference between the hardness and the high temperature resistance and the two-component oil paint. For example, it is very easy to show its performance shortcomings on the dining table and on the floor. This functional defect led to the development of water-based paints.
The fake two-component water-based paint on the market, like the Apple mobile phone, the products of the cottage version are often endless. Before the introduction of two-component water-based paint in Asahi, some small paint factories on the market began to introduce so-called two-component water-based paint, which is actually a paint improvement product, although its hardness has improved. Less, but it contains a lot of toxic substances like ordinary paint, contrary to the original intention of water-based paint to protect the environment and human health with environmental protection and non-toxicity.
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