Development Status of Waterborne Baking Paint Resin
Date:
2020-12-26
With the enhancement of people's awareness of environmental protection, water-based paint resin has become an important direction of the development of coatings. It can not only reduce solvent emissions in production, but also simply adjust the construction viscosity more environmentally friendly. Among them, the water-based acrylic amino baking paint for glass bottles is a new and potential branch, and its development status is as follows:
With the enhancement of people's awareness of environmental protection, water-based paint resin has become an important direction of the development of coatings. It can not only reduce solvent emissions in production, but also simply adjust the construction viscosity more environmentally friendly. Among them, the water-based acrylic amino baking paint for glass bottles is a new and potential branch, and its development status is as follows:
（1) Introduced by well-known wine companies. In the past two or three years, many well-known wine companies are trying to introduce water-based baking varnish resins to accelerate the development of water-based glass bottle paint;
（2) A number of paint companies engaged in glass paint develop and produce water-based paint resins. This trend began2011In the second half of the year, more paint companies are now joining to further accelerate the development of water-based wine bottle paints.
（3) Food safety, fire safety, occupational disease prevention and other considerations are the starting point for wine companies to introduce water-based baking varnish resins;
（4) Excellent performance, cost satisfaction and operability are the keys to the successful introduction of water-based baking paint resins.
Due to the late development of water-based paint resin, there are still some technical difficulties in supporting production and construction:
（1) It is difficult to meet the requirements of low temperature baking or high temperature short-term baking. Many wine companies or wine bottle processing plants follow the baking route of solvent-based wine bottle paint, and also hope that the water-based baking paint resin can meet120~130Baking15~20minrequirements, excellent performance;
（2) single component demand. At present, the commonly used method is to add coupling agent before construction, and the single component needs to solve the problem of storage stability and performance after storage after adding coupling agent, which has been well solved in some coating enterprises;
（3) Wet adhesion between poached and sparkling wine. If the requirement is high, soak it in stock4More than hours (or boiled2Hours), immediately after taking out, test the adhesion (no recovery time, pick with nails), can not move as qualified. This requirement is very high, but at present some coating enterprises can better solve this problem;
（4) applique and bronzing. Many water-based paint resin performance is better, but the decal material requirements are higher, the general surface is narrow, many decal materials on the wine bottle paint adhesion is poor or no adhesion;
（5) Surface effect. Common problems, such as sagging, insufficient gloss, surface fogging, pinholes, insufficient hiding power, etc., need to be explored and studied in paint mixing.
Therefore, from the point of view of water-based baking varnish resin, the use of low-temperature curable carbonyl and hydrazide groups, as well as high-temperature curable hydroxyl, carboxyl and amino groups, to achieve high and low temperature complementary curing effect, to promote the progress of water-based glass wine bottle baking varnish has a good guiding significance and application value.
Water-based baking varnish resin
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