The correct selection and use of paint is an application technical problem, and it is also an important subject. If you master it well, you can get better results. The selection of coatings should meet the requirements of coating properties in accordance with certain supporting principles.
Coating-substrate matching: Surfaces of different materials must be matched with suitable coatings. For example, wood products, paper, leather and plastic surfaces cannot be selected from baking film coatings that require high-temperature drying. They must be self-drying or only Coatings that require low temperature drying. The primer used for various metal surfaces should be selected according to different metals. For plastic film and leather surfaces, it is advisable to use flexible vinyl and polyurethane coatings.
Adhesion between coatings: Topcoats with poor adhesion should be selected as a primer with strong adhesion. In the case where the primer and topcoat properties are good and the bonding between the two layers is not good, an intermediate transition layer may be used to improve the adhesion properties of the underlayer and the top layer.
Coating-coating compatibility: primer and topcoat should be matched, preferably dry-type primer and dry-type topcoat, self-drying primer and self-drying topcoat, with base of paint base The paint is matched with the topcoat.
Effect of the conditions of use on the compatibility: Consideration should be given to the compatibility of the primer and topcoat under the environmental conditions of use.
Matching between coatings and auxiliary materials: Although the auxiliary materials of the coatings are not the main film-forming materials, they have a great influence on the curing process and coating properties of the coatings. The role of auxiliary materials is mainly to improve the performance of the coating and the performance of the coating, to prevent the coating from causing defects, but they must be used properly, otherwise it will have adverse effects.
Matching of coatings and construction processes: Whether the coatings and construction processes are properly matched directly affects coating quality, coating efficiency and coating cost. The construction process of the coating shall be carried out in strict accordance with the construction process specified in the coating specification.
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Label: coating coating properties adhesion properties low temperature drying construction performance
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