Coating classification: application of tertiary vinyl carbonate

It is suggested that the vinyl TERT carbonate has excellent water resistance and weather resistance When it is copolymerized with other monomers, its properties can be fully demonstrated, so as to improve the shortcomings of other monomers in this respect It is an excellent modified monomer Vinyl carbonate has a huge market demand in high-grade environmental protection water-based emulsion paint Because of its advantages of environmental protection, smooth handle, excellent water resistance, leveling and good gloss, the coating of TERT emulsion has attracted more and more attention from many coating manufacturers, and has produced a new generation of latex paint 1 Copolymerization with vinyl acetate 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 news: TERT vinyl carbonate has excellent water resistance and weather resistance When it is copolymerized with other monomers, its performance can be fully demonstrated, so as to improve the shortcomings of other monomers in this regard It is an excellent modified monomer Vinyl carbonate has a huge market demand in high-grade environmental protection water-based emulsion paint Because of its advantages of environmental protection, smooth handle, excellent water resistance, leveling and good gloss, the coating of TERT emulsion has attracted more and more attention from many coating manufacturers, and has produced a new generation of latex paint 1, copolymerization with vinyl acetate showed excellent reactivity when copolymerization of vinyl acetate and vinyl acetate was carried out, such as emulsion polymerization or solution polymerization, which had the same competitive rate and almost the same conversion rate Therefore, vinyl TERT carbonate is an excellent modified monomer of vinyl acetate, and they can be copolymerized in any proportion and high conversion In the emulsion polymerization of vinyl acetate and tertiary vinyl carbonate, a random macromolecule structure with random copolymerization is formed, as shown in the following figure This structure can fully demonstrate the excellent performance of vinyl acetate, which greatly improves the weatherability, alkali resistance and hydrolysis resistance of vinyl acetate emulsion, thus obtaining low cost and high performance polymer emulsion, and widens the application field of vinyl acetate emulsion Such as for the production of high-performance, high color to base ratio of Matt interior wall latex paint; high weather resistant exterior wall latex paint; high-performance water-resistant adhesive; cement polymer additives and high-grade waterproof decorative putty 2 Acrylate copolymer emulsion modified with acrylic monomers has excellent light fastness, weatherability, UV irradiation and corrosion resistance The latex paint made of acrylate copolymer has good aging resistance, light retention, color retention and decoration However, acrylate latex coating has some disadvantages, such as poor hydrolytic resistance, temperature resistance and powdering resistance In view of these shortcomings, we can graft TERT carbonate vinyl ester into acrylate molecular chain through copolymerization of acrylate monomers and tert carbonate vinyl ester monomers, so that its alkali resistance and weather resistance are greatly improved, especially its powdering resistance and cracking resistance are greatly improved Because the rich branched alkyl of TERT carbonate has UV resistance, it shows good performance Comprehensive properties of resistance to pulverization and cracking Due to the grafting of vinyl Tertiary carbonate with strong hydrophobicity into the acrylate molecular chain, the mechanical strength of the copolymer in wet environment is enhanced, which can be used to develop waterproof material systems, such as anticorrosive coatings 3 As a kind of high weather resistant coating, water-borne fluorocarbon coating can meet the requirements of environmental protection at the same time The research and development of water-borne fluorocarbon coating is likely to replace solvent based fluororesin coating and become a key research field in developed countries Vinyl Tertiary carbonate is the most suitable monomer for the synthesis of waterborne fluorocarbon coatings The patent coating literature shows that the tertiary vinyl carbonate is the most suitable monomer for the synthesis of core-shell emulsion fluorocarbon coatings It is synthesized by polymerization of trifluorochloroethylene (CTFE), fatty acid vinyl ester, aliphatic enol and aliphatic enoic acid monomer, and hydrophilic monomer by tertiary vinyl carbonate Due to its large steric hindrance, it polymerizes with CTFE by random alternating copolymerization At the same time, it has good hydrolysis stability It protects its ester group and adjacent chain links, which makes the hydrolysis stability of waterborne fluorocarbon resin much higher than that of vinyl acetate 4 At present, due to the increasingly strict control of VOC and the continuous development of new application technology, powder coating has become one of the fast-growing coating varieties in the coating market However, the powder coating does not contain organic solvent, which leads to its disadvantages of high viscosity and poor fluidity In the film-forming process of powder coating, the powder particles applied to the base material must go through the stages of melting, flowing, wetting the base material, leveling, and coalescing The smaller the viscosity of the melted powder is, the better In order to achieve the qualified storage stability, the glass of powder coating The temperature must be more than 40 ℃, and the best temperature is above 50 ℃, which is one of the most difficult factors to improve the fluidity of powder coating The polybranched structure of the tertiary vinyl carbonate (VeoVa 9) makes its polymer structure compact and its glass transition temperature is high (TG = 70 ℃), that is to say, for a certain relative molecular weight and glass transition temperature Tg, its molecular chain is short Moreover, VeoVa 9 is easy to chain transfer, so it can reduce the relative molecular weight without using expensive initiator, and maintain a high glass transition temperature at the same time In this way, the polymer with high glass transition temperature, low relative molecular weight and low viscosity can be produced with good fluidity Via solution polymerization, VeoVa in the presence of solvent 9 monomers are copolymerized with (meth) acrylate, styrene and other acrylic monomers The powder coating is used in automobile top coat Compared with the traditional GMA acrylic powder coating, when the glass transition temperature is the same (TG = 50 ℃), the relative molecular weight of the coating is only half of the latter, which makes the coating viscosity low and fluidity good, and the coating is fresher than the latter Bright and bright Because of the great difference between the reaction of vinyl TERT carbonate and styrene, it is difficult for vinyl TERT carbonate to be grafted onto the styrene molecular chain, but the process can be changed For example, at the beginning of the reaction, all vinyl TERT carbonate can be added into the reactor With the addition of phenylene and other monomers, vinyl TERT carbonate can be grafted onto the polymer molecular chain slowly Forming random copolymers At present, the research of Tertiary carbonate vinyl acetate polymer is in the ascendant, for example, adding the copolymer of Tertiary carbonate vinyl acetate to unsaturated polyester resin can solve the shrinkage defect of curing at room temperature; comparing the copolymerization of Tertiary carbonate vinyl acetate with butyl acrylate and 2-ethylhexyl acrylate and vinyl acetate, studying their effect on the properties of latex paint In many cases, the combination of these monomers can make the performance of the film better than that of the single use 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,