Common knowledge of coatings: what are the performance characteristics of solvent based architectural coatings

The key points are as follows: solvent based architectural coatings are designed and prepared by using solvent based resin as film-forming material, organic solvent as dispersion medium and corresponding solvent based coating additives according to the basic principles of solvent based coating formulation design and preparation The basic performance characteristics of solvent based architectural coatings are good leveling, wide construction temperature range, good decorative effect of coating, excellent physical and mechanical properties, such as dense coating, good water resistance, corrosion resistance and aging resistance In addition, in architectural coatings, solvent based coatings have the following characteristics ① Concentration of solvent based architectural coatings 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 Home of coatings: solvent based architectural coatings are designed and prepared with solvent based resins as film-forming substances, organic solvents as dispersion media, and corresponding solvent based coating additives according to the basic principles of solvent based coating formulation design and preparation The basic performance characteristics of solvent based architectural coatings are good leveling, wide construction temperature range, good decorative effect of coating, excellent physical and mechanical properties, such as dense coating, good water resistance, corrosion resistance and aging resistance In addition, in architectural coatings, solvent based coatings have the following characteristics ① Solvent based architectural coatings concentrate a variety of high-performance architectural coatings, which have good durability, stain resistance, water resistance, acid rain resistance and corrosion resistance to other chemicals in the atmosphere For example, fluororesin coating, polyurethane acrylate composite coating, silicone acrylate composite coating and acrylate are all superior to the corresponding waterborne coating ② The performance of solvent based architectural coatings is better than that of the same kind of waterborne architectural coatings After the waterborne coating, although it has great advantages in terms of environmental protection performance, it has become an irreversible development trend However, as far as the current technical level is concerned, some surfactants, thickeners and protective colloids that are easy to dissolve in water are left in the coating due to water-based, which reduces some properties of the coating This is also the reason why some applications that must require high-performance coatings (such as automotive coatings) are still difficult to achieve water-based or low degree of water-based ③ Solvent based architectural coatings have incomparable construction performance compared with water-based coatings Solvent based coatings can adjust the viscosity of the coatings to a certain extent by adjusting the molecular weight of the resin, so that the coatings can achieve better leveling; but it is difficult for waterborne coatings to achieve this, and only through the use of thickeners can the coatings achieve satisfactory viscosity requirements, which often leads to poor leveling of the coatings In addition, it is an important way to control the volatilization rate of the solvent in the coating to obtain high-quality coating It is easy for solvent based coating to do this, as long as the proportion of mixed solvent is adjusted, which is impossible for water-based coating Because of this, solvent based coatings can meet the requirements of different climates (such as low temperature, even negative temperature, high temperature, high humidity, etc.) by using diluent or adjusting solvent proportion However, the water-based coating can not be constructed under 0 ℃ or low temperature, and the construction under high humidity will also affect the coating performance ④ Solvent based coatings have more stable coating properties As the solvent resin itself is stable, the solvent coating is very stable at low temperature and high temperature; while the water-based coating is not stable at low temperature due to the freezing of water at zero ℃, and the storage stability of the coating at room temperature is not as good as that of the solvent coating due to the performance of the water-based resin ⑤ Due to the large use of solvents in the composition of coatings, the main problems of solvent based coatings are environmental protection, cost, safety in production, storage and transportation, and use (flammability, explosion, toxicity, etc.) 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,