Paint knowledge - types of fluorocarbon paint

Core tips: introduction to the knowledge of industrial paint features classification: the development of industrial paint fluorocarbon paint has developed from hot-melt type and solvent soluble type to crosslinkable type With the gradual improvement of environmental protection requirements in today's society, fluorocarbon paint will continue to develop in the direction of high solid content and water-based The development of fluorocarbon paint: the development of fluorocarbon paint has a history of more than 60 years since the synthesis of polytetrafluoroethylene resin by Dow Chemical Company in 1938 The development of fluorocarbon paint began with DuPont's PTFE coating and Japan's PVDF coating, which has a history of 30 years Fluorocarbon paint 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: introduction to industrial paint knowledge - Characteristics - Classification chapter: the development of industrial paint fluorocarbon paint has developed from hot-melt type and solvent soluble type to crosslinkable type With the gradual improvement of environmental protection requirements in today's society, fluorocarbon paint will continue to develop in the direction of high solid content and water-based The development of fluorocarbon paint: the development of fluorocarbon paint has a history of more than 60 years since the synthesis of polytetrafluoroethylene resin by Dow Chemical Company in 1938 The development of fluorocarbon paint began with DuPont's PTFE coating and Japan's PVDF coating, which has a history of 30 years The development of fluorocarbon paint has gone through several stages: hot-melt type solvent soluble type crosslinkable type With the gradual improvement of environmental protection requirements, fluorocarbon paint will further develop towards the direction of high solid content and water-based The hot-melt fluorocarbon paint needs to be baked into film at high temperature The thermoplastic fluorocarbon resin represented by PVF, PVDF and PTFE has regular structure, and the polymer itself is semi crystalline On the one hand, it has excellent solvent resistance, on the other hand, the insolubility in the solvent causes inconvenience in use, so the initial fluorocarbon paint can only be made into water dispersive coating, powder coating or organic sol Water dispersible fluorocarbon paint is dispersed in appropriate equipment by resin powder, high temperature pigment, dispersant, adhesive and water Some of them are supplied to the paint manufacturer by liquid emulsion polymerization or suspension polymerization Organic sol is made by dispersing fluorocarbon resin powder such as PVDF powder in acrylic resin solution and adding organic solvent If the color paint needs to be prepared, it is mixed and dispersed with the pigment to make the color paste, and then the fluorocarbon resin powder is dispersed in it to make the organic sol fluorocarbon resin color paint In addition to acrylic resin, epoxy resin, polyamide, polyamide imide, polyurethane, polyphenylene sulfide and other resins with good heat resistance and adhesion can also be added to achieve the purpose of modification This kind of coating needs to be baked at high temperature after construction, and the hot melt flow becomes the coating For example, DuPont's Teflon coating is mainly used in electric rice cooker, cooking utensils and the inner wall of high-temperature reaction kettle Due to the complex construction process of this kind of coating, its application is limited, and it can only be used on aluminum plate or steel plate that can withstand high temperature Solvent soluble coating is another kind of fluorocarbon coating developed on the basis of hot-melt coating This kind of coating can form film at low temperature or normal temperature, and its application range is expanded It is prepared by copolymerization of various fluorine-containing monomers with vinyl monomers with side groups or other polar vinyl monomers It reduces crystallinity and increases solvent solubility For example, VDF / TFE / HFP terpolymer (kynarads) and vF2 / HFP terpolymer coating of elfatochem North America Inc reduce baking temperature and improve solubility; The thermoplastic fluororesin coating with molecular weight of 2000-5000 can be prepared by solution polymerization and suspension polymerization of tetrafluoroethylene or trifluoroethylene and other polar ethylene monomers under controlled conditions In order to further improve the solubility, solid content and construction performance of fluorocarbon coatings, the fluororesins with functional groups, especially - oh and - COOH functional groups, were studied, which can be crosslinked and solidified with isocyanate or amino resin, namely the so-called crosslinkable fluorocarbon resin coatings The functional groups, such as fluoroethylene, alkylvinyl ether copolymer (FEVE) and perfluoropolyether (PFPE), were introduced by copolymerization with functional group monomers such as enols, alkenes, enoids or other ways Compared with PVDF, they are endowed with certain active functional groups They not only absorb the excellent performance of fluorocarbon resin, but also increase the amount of organic solvent due to the introduction of functional groups Solubility, compatibility with pigments and crosslinking agents, luster, flexibility and construction performance 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,