General knowledge of coating: purpose of wood surface coating and requirements for coating

Key tips: (1) purpose of wood surface coating: 1 Beautify the surface - enhance the three-dimensional sense of wood texture and the touch sense of the surface when giving color, luster and smoothness; 2 Material protection - moisture resistance, water resistance, oil resistance, chemical resistance, insect resistance, anti-corrosion, moth resistance, etc; 3 Special functions - temperature indication, electrical insulation, sound insulation, heat insulation, etc （2） Painting requirements for wood surface: There are two main difficulties in painting wood surface: 1 Porosity of water wood: the average pore area of the wood surface accounts for about 40% of the surface area, less about 30%, more can Which is the price of Dajin diatom mud Recommended brief introduction: which is the price of Dajin diatom mud? How to buy genuine diatom mud? Guangdong diatom mud agent suggests placing a basin of cold water in the air conditioning room, so that the diatom mud wall can breathe effectively The feature of the breathing wall is obvious When the indoor air is dry, the diatom mud wall will release the absorbed water quickly Put it out to help regulate the indoor dry humidity It is suggested to place a basin of cold water in the air conditioning room, so that the wall of diatom mud can breathe effectively The feature of the wall that can breathe is obvious When the indoor air is relatively dry, the wall of diatom mud will absorb the water Paint Home News: (1) the purpose of wood surface coating: 1 Beautify the surface - enhance the three-dimensional sense of wood texture and the touch sense of the surface when giving color, luster and smoothness; 2 The protection of material - moisture resistance, water resistance, oil resistance, chemical resistance, insect resistance, corrosion resistance, moth resistance, etc.; 3 Special function - temperature indication, electrical insulation, sound insulation, heat insulation, etc （2） Requirements of wood surface for painting: there are two main difficulties in painting wood surface: 1 Porosity of water wood: the average pore area of wood surface accounts for about 40% of the surface area, less about 30%, more up to 80% Therefore, the wettability and adhesion of wood is a big problem in wood coating; 2 The hydrophilic swelling and shrinkage of wood cause the wood to expand and shrink sharply when it is exposed to water, resulting in cracking and falling off of the coating film, so the lasting stability of the coating film is another big problem in wood coating; in addition, the acid and lipid containing substances of wood are easy to seep out of the surface The hardness of wood, the structure of wood and the heterogeneity of surface color are also the difficulties of wood coating Because of the characteristics of wood and the difficulties of coating, the characteristics of wood coating and special coating system are formed （3） Requirements of wood coating on coating: 1 Because wood foam is a multi-layer supporting system, it is required that the underlying coating has good permeability, wettability and superior adhesion to wood, and good adhesion between layers to form a whole 2 The coating shall have good strain force to ensure the durability of the film; 3 The coating shall have good decoration to ensure the clarity of wood grain and obvious three-dimensional sense; 4 The coating shall have good mechanical properties, water-resistant parts, chemical resistance and pollution resistance; 5 The coating shall have high hardness, strong friction resistance and good hand feeling; 6 The coating shall be of good workability, repainting, and can be changed according to the use requirements Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,