How to improve the drying time of water based paint for furniture

Dabao paint held a press conference this year, I heard that three-dimensional drying can be realized, and the use of three-dimensional dryer can solve this problem, you can inquire.

Temperature, airflow, indoor ventilation, can be placed relative to a hot stove.

Under natural conditions, temperature, humidity and wind speed change from time to time, and the drying speed and film-forming quality are unstable. If the coating is easy to turn white and dry slowly under the conditions of high temperature, high humidity or high humidity. At low temperatures, the drying rate is slow; Especially under 5, water-based coatings are difficult to form films.

These are all important reasons for limiting the application of water-based coatings.

2.Microwave drying: Microwave refers to electromagnetic waves with a wavelength of 1mm-1m and a frequency of 300MHz-300GHz, with penetration, and the commonly used microwave frequency is 915-2450MHz.

Microwave heating applies the principle of dielectric loss, while the dielectric constant of water is much greater than that of dry matter, and the vast majority of the energy released by the electromagnetic field is absorbed by the moisture in the paint. The advantage of microwave heating is that the drying speed is particularly fast, and different substances have selective absorption with respect to microwaves; There are no profile requests for the object to be dried; The heating of the coating film is very even, there is no temperature gradient, and it is possible to dry the thick film.

3.Hot air drying: hot air drying is a heating and drying method that uses the principle of convection, with hot air at a temperature of 40 60 as the heat carrier, and transmits heat energy to the coating on the surface of the workpiece, and the coating absorbs energy and solidifies it into a film.

Electricity or steam is often used as the heat source, the air is heated first, and the heat is transmitted to the surface of the coating by the hot air through convection, so that the coating can be dried quickly. The hot air drying process can significantly speed up the drying speed of the coating, and has the characteristics of strong compliance, which is a more commonly used drying method.

Water-based coatings contain a small amount of photosensitizers, and under the reflection of ultraviolet rays, the photosensitizers absorb specific wavelengths of ultraviolet rays, synthesize and produce active groups, trigger the polymerization reaction of film-forming substances, and form a network structure to cure the coating. Ultraviolet curing has the characteristics of fast coating curing speed and good coating film quality. This method can only be used to dry water-based paints, and can only dry into flat furniture finishing panels.