As the name suggests, glass paint is a glass paint that is used exclusively for glass surfaces. Glass is widely used in our survival and can be seen everywhere. Glass interprets our world more purely, but the glass surface is easily scratched and discolored. The glass paint can protect the glass and prevent the loss of light. Next Xiaobian introduced glass paint components and glass paint spraying construction techniques.
Glass paint composition
1, glass paint is divided into: oil glass paint and water glass paint
2, oily glass paint is divided into: one-component self-drying, two-component self-drying, paint
3, waterborne glass paint is divided into: water-based one-component self-drying glass paint, water-based two-component self-drying glass paint, water glass paint
Formula mainly contains these ingredients
1. Oily one-component: nitro or acrylic plus epoxy plus pigment, coupling agent, etc.
2, oily two-component: alkyd or acrylic plus epoxy plus pigment, coupling agent and other curing agent
3, oily paint: acrylic plus epoxy plus pigments, coupling agents, etc.
4, water-based one-component: waterborne acrylic, waterborne polyurethane plus pigments, coupling agents, etc.
5, waterborne two-component: waterborne acrylic, waterborne polyurethane plus pigment, coupling agent and other curing agent
6, water-based paint: modified acrylic emulsion plus pigments, coupling agents, etc.
Glass paint spraying construction skills
1. Use a clean thinner or water to adjust the viscosity of the coating to a suitable spray. Measured by a Coater-4 viscometer, the appropriate viscosity is generally 18 to 30 seconds. If there is no viscometer, you can use the visual inspection method: stir the paint with a rod (iron rod or wood rod) and stir it up to a height of 20 cm to stop it. If the paint is not in a short time (several seconds) Too thick; such as a break from the bucket on the line that is too thin; to stop at a height of 20 cm, the paint into a straight line, the instantaneous stop flow becomes a drop, this viscosity is more appropriate.
2, the air pressure is best controlled at 0.3-0.4 MPa (3-4 kg force / square centimeter). If the pressure is too low, the atomization of the lacquer solution will be poor, and the surface will form pits: the pressure is too large and the turbulence is easy to hang, and the paint mist is too large, which wastes the material and affects the operator's health.
3, the distance between the nozzle and the object surface is generally 200-300 mm. Nearly easy to hang; over uneven paint spray, prone to pitting, and the nozzle away from the object paint mist sprayed on the way to cause waste. The specific size of the distance should be properly adjusted according to the type of glass paint, viscosity, and air pressure. Slow-drying paint spraying distance can be farther, when the viscosity is thin, it can be farther; when the air pressure is large, the distance can be farther, the pressure can be closer to a little; the so-called nearer point is the adjustment of the range between 10mm-50mm, If it exceeds this range, it is difficult to obtain a desired paint film.
4, the spray gun can be used for up and down, left and right movement, preferably at a speed of 10-12 meters / min evenly, the nozzle should be straight to the surface spray, to reduce oblique spraying. When spraying on the both ends of the object, the hand that deducts the trigger of the spray gun should be loosened quickly, so that the paint mist is reduced. Because the two ends of the object surface are often subjected to more than two times of spraying, it is the place most likely to cause sagging.
5, when the next spray to suppress the 1/3 or 1/4 of the previous one, so that there will be no leakage phenomenon. When spraying quick-drying paint, it should be sprayed in order. Spraying effect is not ideal.
6, when spraying in outdoor open places, pay attention to the wind direction (winds should not work), the operator must stand in the downwind direction, to prevent the paint mist from being blown into the paint film has caused an unsightly granular surface.
7, the order of spraying is: easy to be easy after the first, after the first outside. After the first height and then the low, the first small area after a large area. This will not cause the post-spray paint mist to splash on the sprayed paint film, destroying the sprayed paint film.
How to use glass paint
1. After opening the bucket, observe the status of the paint in the bucket. If there is no abnormality, stir the paint liquid in the bucket.
2, according to the proportion of the label shown in the paint, the first curing agent and the main paint mix and stir evenly, then add the diluent, adjust the construction viscosity to construction.
3. Cleaning of the substrate: Wipe the surface of the glass with talcum powder or special detergent to completely remove stains on the surface of the glass and keep the surface of the glass clean and dry.
4, spraying: large gun guns should be 20-30cm, small guns in 15-25cm. Spray pressure should be 0.3-0.6 (about 3-6kg/cm2) spray gun modulation to the appropriate oil and gas output to ensure uniform spray.
5. In case of high humidity in the construction environment, the modifier may be wiped on the glass substrate or the baked paint film may be baked at a low temperature to ensure the product quality.
6, the preparation of paint must be used up within the effective use of time, generally used within 3 hours of summer, winter is generally used within 8 hours.
Editor's summary: The composition of the glass lacquer and the glass lacquer spray construction technique are introduced here. I hope to be helpful to everyone. If you want to know more about yourself, you can follow the information on this site.
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