Paint knowledge: what are the primers

The key points are as follows: 1) raw lacquer (also known as lacquer) has the advantages of acid resistance, solvent resistance, water resistance, oil resistance, wear resistance and strong adhesion The disadvantage is that it is not resistant to strong alkali and strong oxidant The drying time of the paint film is long and the toxicity is large, which is easy to cause human poisoning during construction 2) Urushiol resin paint It changes the disadvantages of lacquer, such as high toxicity, slow drying and inconvenient construction, but it still keeps other advantages of lacquer It can be used as underground moisture-proof and anti-corrosion materials, but it is not resistant to sunlight and ultraviolet radiation, so it should be used for parts with less sunlight exposure At the same time, the paint should not be kept for a long time 3) Phenolic tree Shenyang steel structure fireproof coating construction expert punde Building Fire Engineering Co., Ltd Recommended introduction: since its establishment, Shenyang punde Construction Fire Engineering Co., Ltd has cultivated a group of professional construction teams with excellent equipment, rich experience and serious responsibility with advanced and scientific management methods and strict engineering quality assurance and after-sales service system It has undertaken a number of fire system installation projects, which has been praised by customers Every idea and special requirement of you will be fully considered by us and fully realized in the construction technology, which will become the cornerstone of our successful long-term development We are looking forward to your invitation, to provide you with quality services and high-quality technical support! All construction coatings have passed ISO9001 Paint Home News: 1) lacquer (also known as lacquer), with acid resistance, solvent resistance, water resistance, oil resistance, wear resistance and adhesion is very strong The disadvantage is that it is not resistant to strong alkali and strong oxidant The drying time of the paint film is long and the toxicity is large, which is easy to cause human poisoning during construction 2) Urushiol resin paint It changes the disadvantages of lacquer, such as high toxicity, slow drying and inconvenient construction, but it still keeps other advantages of lacquer It can be used as underground moisture-proof and anti-corrosion materials, but it is not resistant to sunlight and ultraviolet radiation, so it should be used for parts with less sunlight exposure At the same time, the paint should not be kept for a long time 3) Phenolic paint It has good electrical insulation and oil resistance It can withstand 60% sulfuric acid, hydrochloric acid, acetic acid, phosphoric acid of certain concentration, most salts and organic solvents, but not strong oxidant and alkali The film is brittle, easy to crack when the temperature difference changes greatly, and the adhesion with metal is poor, so its application in production is limited 4) Epoxy phenolic paint The paint film has the advantages of both epoxy and phenolic resin It has not only good mechanical properties and alkali resistance of epoxy resin, but also acid resistance, solubility resistance and electrical insulation of phenolic resin 5) Epoxy coating The coating based on epoxy resin 634 has high hardness and strength, but it is brittle and has poor adhesion Epoxy resin coating has good corrosion resistance, especially alkali resistance, and good wear resistance It has excellent adhesion with metal and non-metal (except PVC, polyethylene, etc.), good elasticity and hardness, and low shrinkage 6) Perchloroethylene paint It has good resistance to acid gas, sea water, acid, oil, salt fog, mildew and combustion, but it is not resistant to the corrosion of organic solvents such as phenols, ketones, lipids and benzene 7) Bituminous paint Under normal temperature, it can resist the corrosion of nitrogen oxide, sulfur dioxide, sulfur trioxide, ammonia, acid mist, chlorine, low concentration inorganic salt, alkali, sea water, soil, salt solution and acid gas with concentration less than 40%, but not the corrosion of oil, alcohol, lipid, hydrocarbon and other organic solvent and strong oxidant 8) Furan resin paint Furan resin paint should not be directly applied to metal or concrete surface, and other paint materials must be used as primer It can resist the corrosion of most organic acids, inorganic acids, salts and other media It has good alkali resistance, organic solvent resistance, water resistance and oil resistance, but it is not resistant to the corrosion of strong oxidizing media (nitric acid, chromic acid, concentrated sulfuric acid, etc.) Due to the brittleness of furan resin, poor adhesion with metal and shrinkage after drying, most of the modified furan resin is used 9) Polyurethane paint 10) inorganic zinc rich paint 11) new paint ① Polyurethane paint It has the advantages of salt resistance, acid resistance and various diluents resistance ② Epoxy coal tar pitch It combines the advantages of epoxy resin, such as high mechanical strength, strong adhesion, chemical resistance and coal tar pitch corrosion resistance It is widely used in the anti-corrosion treatment of urban water supply pipes, gas pipes, oil refineries, chemical plants, sewage treatment plants and other equipment and pipes ③ 3 poly vinyl anticorrosive coating The coating is widely used in natural gas and oil transmission and distribution pipelines, municipal pipe networks, oil tanks, bridges and other anti-corrosion projects 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,