Paint matching refers to the possibility of mutual cooperation between the paint layer and the object surface, the paint layer and the paint layer, and the corresponding construction methods considered during paint construction. Even if there is high-quality paint, a clean surface, and professional craftsmanship during construction, if the matching of paint is ignored, the expected effect will not be obtained. Therefore, when choosing paint, we must carefully choose a reasonable paint matching scheme.
(1) According to the different materials of the painted objects, different types of paints should be used to coat the steel surface, such as red lead anti-rust paint and iron red anti-rust paint with better anti-rust performance; For general anti-rust paint, zinc chrome yellow anti-rust paint should be used; for wood surfaces, oil-based paint should be used as a primer. Pig's blood is used as a base for ordinary plastering surfaces, and alkali-resistant latex paint , 106 paint or perchlorethylene paint is used for cement surfaces. Drying paint cannot be used on buildings or large metal appliances, and paints that can dry naturally are required.
(2) In order to strengthen the bonding force between coatings, attention should also be paid to the compatibility of primer, putty, topcoat, varnish and various auxiliary materials. Generally, paints with the same type of solvent and thinner should be selected. Such as perchlorethylene primer, perchlorethylene putty, perchlorethylene topcoat.
(3) Paint materials and construction methods should be properly coordinated. If oil-based paint is used for wooden doors and windows, the method of brushing is more appropriate. If the method of spraying is used, it will waste materials and stain the wall. The amino alkyd baking varnish adopts the "wet-on-wet" process in construction (that is, spray the second degree before the first degree is completely dry), which can improve the bonding force between the coatings and reduce a baking process. In the matching construction of alkyd primer and nitro topcoat, if the "wet-on-wet" process is adopted, the phenomenon of "biting" of the bottom layer can also be prevented, but the thickness of the primer should be controlled during construction, and the thickness of the primer should not be sprayed too thick . Furthermore, the right time to spray nitro topcoat must also be particular about. Water-soluble paint is generally applied by electrophoretic coating. High-viscosity paints should be sprayed with high-pressure airless spray, and two-component paints should be sprayed with double-caliber Spray Guns.
(4) Choose suitable paint materials according to different use environments and requirements. The coating of indoor utensils requires beautiful decoration, wear resistance and washability, but there is no need to be demanding on weather resistance. The bathroom wall should be painted with better waterproof performance, while the kitchen wall should be resistant to oil and gas pollution in addition to water vapor resistance. For various means of transportation, bridges and agricultural machinery, it is necessary to select paints with better weather resistance. Matt paint and latex paint can be used for the interior walls. The exterior walls need to use sun-resistant and anti-aging paint.
