Coating classification: solventless epoxy coating

The key points are as follows: solventless epoxy coating has no volatile organic solvent, is non-toxic and environmentally friendly, and uses epoxy resin with low molecular weight and active diluent as the base material When it is used, it is uniformly mixed with curing agent and cured to form a film at room temperature or baking temperature It not only has the excellent performance of solvent based epoxy coating, but also has a film-forming thickness of more than 100 pm at one time and strong anti-corrosion ability Epoxy resin coating has the advantages of strong corrosion resistance, strong adhesion, high hardness, wear resistance, salt fog resistance, acid and alkali resistance, high gloss, high solid content and high fullness Therefore, it is widely used as industrial heavy-duty anticorrosive paint, antirust primer, floor paint Paint agent, top 10 Chinese wall paint brands Recommended introduction: interior wall paint and exterior wall paint can achieve beautiful, clean and pleasant effects, but the effects in different environments are different, so the color of the paint will be different There are ten brands of Chinese paint, ten brands of global paint, ten brands of Chinese wall paint, and ten brands of Chinese paint, Famous trademark of Chinese paint and coating In private rooms, most of us choose according to our own personality, personal hobbies and living habits The younger generation will choose the interior wall paint with rich colors and bright colors, while the older ones will have some working experience Home of coatings news: solventless epoxy coating has no volatile organic solvent, non-toxic, environmental protection, using low molecular weight epoxy resin, active diluent as the base material When it is used, it is uniformly mixed with curing agent and cured to form a film at room temperature or baking temperature It not only has the excellent performance of solvent based epoxy coating, but also has a film-forming thickness of more than 100 pm at one time and strong anti-corrosion ability Epoxy resin coating has the advantages of strong corrosion resistance, strong adhesion, high hardness, wear resistance, salt fog resistance, acid and alkali resistance, high gloss, high solid content and high fullness Therefore, it is widely used as industrial heavy-duty anticorrosive paint, antirust primer, floor paint, oil tank paint, drinking water tank paint, etc However, the traditional solvent based coating contains about 50% organic solvent In the process of coating manufacturing, construction, drying, curing and film forming, a large amount of VOC is emitted to the atmosphere, which poses a very serious pollution and threat to the human ecological environment, and the economic benefit is low The solvent-free epoxy coating has no volatile organic solvent, is non-toxic and environmentally friendly, and uses epoxy resin with low molecular weight and active diluent as the base material When it is used, it is uniformly mixed with curing agent and cured to form a film at room temperature or baking temperature It not only has the excellent performance of solvent based epoxy coating, but also has a film-forming thickness of more than 100 pm at one time and strong anti-corrosion ability Solventless epoxy coating belongs to high solid coating Solventless epoxy coating is a two-component coating without volatile organic solvent One component is epoxy resin, active diluent, pigment, physical pigment and the other is curing agent The biggest difference between solventless epoxy coating and solvent-based epoxy coating is that volatile organic solvents are not used as dispersion medium in the process of coating manufacturing and construction application The coating formed by curing low viscosity amine curing agent and liquid epoxy resin through crosslinking reaction has unusual characteristics Solventless epoxy coating has 5 characteristics 1 Construction safety, environmental protection and energy saving due to the common solvent based epoxy paint contains more than 30% volatile organic solvents, even for high solid epoxy paint, the VOC content is more than 10% These organic solvents volatilize in the process of coating and drying, and mix with air to form explosive gas mixture When coating construction is carried out in some closed places (such as inner wall of storage tank), a large amount of forced ventilation must be carried out The safety management department needs to regularly measure the oxygen content and combustible gas concentration in the tank during the construction process The coating can only be carried out when the oxygen content is more than 18% and the combustible gas concentration is less than 10% of the lower explosion limit, so as to avoid the explosion of similar Dushanzi oil tank Happen Because there is no solvent volatilization in the paint, the pinhole of the coating can be eliminated, the permeability and corrosion resistance can be improved, the risk of poisoning and fire can be eliminated, the ventilation equipment can be reduced, the resource waste caused by solvent volatilization can be avoided, and the environmental pollution can be reduced 2 Excellent physical and mechanical properties Because the molecular structure of epoxy resin contains a lot of polar groups such as hydroxyl group and ether group In addition, the active epoxy group can react with the interface metal atom to form a very strong chemical bond during the curing process, which ensures the excellent adhesion between the coating and the base material, especially the solventless epoxy anticorrosive coating has excellent wet adhesion, thus ensuring the coating in the liquid medium Excellent durability in corrosive environment The solventless epoxy coating can form a smooth coating similar to the enamel after crosslinking and curing Due to the high crosslinking density and the benzene ring structure in the molecular chain, the coating is hard, flexible, wear-resistant, scratch resistant and impact resistant The solventless epoxy coating has the characteristics of low shrinkage, thick film, good edge coverage, small internal stress and not easy to crack 3 Excellent chemical resistance high cross-linked solventless epoxy anticorrosive coating has excellent chemical resistance, and can withstand long-term immersion of seawater, medium acid, alkali, salt, various oil products, aliphatic hydrocarbon and other chemicals 4 Excellent anticorrosion performance solventless epoxy coating does not contain volatile organic solvent, and will not form pores left by solvent volatilization in the process of drying and film forming, and the film is thick, with excellent film compactness, which can effectively resist the corrosion of steel through the coating of water, oxygen and other corrosive media 5 At present, the unit price of solventless epoxy coating is slightly higher than that of solventless epoxy coating, but the solid content of solventless epoxy coating is nearly 100% In the case of the same film thickness, the amount of coating required is less than that of solventless epoxy coating; thick paste anti-corrosion coating can be made, the coating thickness can reach 100-700 μ m, the coating bonding strength is high, and the shrinkage rate is small In addition, because one layer of solventless epoxy coating can reach high film thickness, the number of construction layers can be reduced, thus reducing the cost of coating construction, and there is no need for air during curing, and even some special modified coatings can be cured under water 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,