General knowledge of paint: preparation before application of wood paint

Core tip: the water-based wood paint coating should be carried out after the completion of carpentry work No matter how narrow and limited the space environment is, it must be clean and free of dust, fly ash and miscellaneous items The best condition of painting environment is room temperature, constant temperature, humidity below 70%, with soft ventilation Under this condition, it can ensure the rapid evaporation of water, reduce or eliminate the phenomenon of grain formation and long hair thorn The coating effect will be affected if the ambient temperature is lower than 15 ℃ or higher than 30 ℃ Painting should be carried out in sunny days Before spraying construction, the parts that do not need to be painted must be covered tightly, and one side of the paint mist must be stained Brushing soft Application scope and advantages of roller ceramic coating Recommended introduction: the surface of ceramic rubber plate used for roller ceramic coating is cast into durable rubber plate by hundreds of independent small ceramic pieces Each ceramic piece has raised characteristics Under general conveyor belt pressure, thousands of unique cast bumps can produce positive traction, prevent slipping and extend the service life of conveyor belt roller At the same time, the bottom layer adopts high-quality rubber, which has strong elasticity and can play a good impact resistance role The scope of application of roller ceramic coating is one three six 83857180 (the same as V) 1 Roller coating in extremely harsh working environment 2 The belt joint is not suitable for fixing with iron buckle; 3 It is suitable for leather Paint Home News: waterborne wood paint coating should be carried out after the completion of carpentry work No matter how narrow and limited the space environment is, it must be clean and free of dust, fly ash and miscellaneous items The best condition of painting environment is room temperature, constant temperature, humidity below 70%, with soft ventilation Under this condition, it can ensure the rapid evaporation of water, reduce or eliminate the phenomenon of grain formation and long hair thorn The coating effect will be affected if the ambient temperature is lower than 15 ℃ or higher than 30 ℃ Painting should be carried out in sunny days Before spraying construction, the parts that do not need to be painted must be covered tightly, and one side of the paint mist must be stained The soft brush shall be used for brushing It shall be soft and water absorbent Before use, the bristles that are not firmly fixed shall be smoothed, cleaned with clear water, and then used after being dried It must be noted that before the brush is dipped in the paint, it must be wetted with water in advance, but there shall be no water drop, otherwise the paint brush will be dried and scrapped quickly, or the paint in the paint brush will become dry and dross, which will affect the coating effect The spray can be applied by ordinary air compressor or air spraying airless spraying machine, while the high-pressure airless spraying machine is not commonly used in advanced finishing The diameter of spray gun is 1.0-1.2mm, the pressure is 3-5bar, and the output of paint liquid is adjustable All parts in contact with paint liquid in spraying equipment must be made of stainless steel or protected with PTFE lining, and aluminum parts are not allowed Water, water-based resins and additives in coatings may contain substances that can react with aluminum and aluminum alloys These compounds will cause pitting corrosion, pulverization of aluminum materials, pollution and discoloration of paint solution The silk cotton used for wiping and coating shall not lose the fiber, and must be soaked with water and squeezed dry before use In addition, it is necessary to prepare abrasive cloth for grinding, which can be used from 200 × 3 to 1000 × 3, especially for abrasive cloth with more than 600 × 3 Do not use abrasive cloth containing stearate, or the residue of stearate after grinding may cause shrinkage in the paint liquid Before using the paint, it is necessary to mix the paint evenly, especially the color paint and the paint with extinction powder Do not mix the paint by concussion In order to ensure the painting quality, the water-based paint must be filtered before use The varnish shall be filtered with a filter screen of more than 300 mesh, the paint shall be filtered with a filter screen of more than 200 mesh, and the factory drawing shall grasp and filter with a paper core filter of corresponding mesh 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,