Abstract: Organic Fluorine materials have many excellent properties due to be widely used in the coatings industry occupies an important status of a Organic fluorine coating of paint as a variety of best performance, will increasingly attracted attention and been widely in specific areas, deep-level applications.
organic fluorine materials have many excellent properties due to be widely used in the coatings industry occupies an important status of a Organic fluorine coating is a polymer or organic fluoride organic fluoride as the main film-forming modified polymer coating material has excellent weather resistance, durability, chemical resistance and corrosion resistance, wear resistance, insulation resistance, dip resistance and pollution, sewage and other performance, widely used in construction, aviation, electronics, electrical, mechanical and household items, wood furniture and other fields, is a set of high and new, special performance at an excellent paint.
organic fluorine resin
conventional organic coating is generally fluorine resin such as tetrafluoroethylene with fluorinated olefins (TFE), vinyl fluoride (VF), vinylidene fluoride (VDF ) and other monomers as raw materials for homopolymer or copolymer obtained, and its performance, wide application. Polytetrafluoroethylene (PTFE) coating is a fluorine resin coating is not sticky, non-wetting, low friction and heat resistance of the best coating, mainly used in household products, food, rubber, plastics, automobiles,mac makeup, precision machinery and other industrial areas as an important anti-sticking coating, heat-resistant coatings, insulation coatings and wear-resistant coatings. Polyvinylidene fluoride (PVDF) coatings typically obtained by the emulsion polymerization, has excellent chemical resistance, excellent thermal stability and excellent weather resistance, durability, wear resistance, aluminum is widely used in construction and metal coil, it can be used as decorative and protective cover finish. Japan's Asahi Glass Company in 1982, the development of PVF - copolymer (PFEVE) resin, a fluorine resin solution is difficult to dissolve in conventional solvents the problem and achieve a room temperature curing,insanity dvd, significantly broadening the fluorine coating applications.
Although organic fluorine resin has many excellent properties, but there are some problems: the general need to be high temperature curing,vibram five fingers, curing time is long, large-scale construction is not convenient, poor adhesion with the substrate, the pigment of the Run moist poor solubility in organic solvents is not good, expensive and so on. Therefore, organic fluorine resin and other organic resins common preparation
organic fluorine modified resin
organic fluorine resin modified resin usually has two advantages make up for the two resin certain deficiencies in performance and thus improve performance and expand applications. Modification methods are modified by physical blending and chemical reaction of two, chemical modification of the products are generally better than the performance of good physical blending modification. Chemical modification mainly with monomers such as enol class, allyl esters, such as acid type monomer or other means will be the introduction of functional groups, the Health and transaction-linked copolymer, so that access to new properties of organic fluorine. Modification of other organic fluorine in organic coatings industry, with organic fluorine resin is modified with acrylic resin, polyurethane resin, epoxy resin, polyphenylene sulfide and organic silicon resin.
acrylate coating
acrylate acrylic paint coating has retained a good alkali resistance, color retention, gloss retention, full film characteristics, Weather also has organic fluorine resin, stain resistance, corrosion resistance and self-cleaning properties, is a comprehensive performance excellent paint.
through the introduction of fluorinated groups to change the structure of acrylic polymers, thereby greatly improving the performance of acrylic resin, it has a broader application. The introduction of fluorinated groups are 2 ways: First, the use of fluorinated acrylate monomers and acrylic acid copolymer; Second, fluoride was added in the polymer additives, such as perfluorooctanoic acid, fluorocarbon surfactant. The former method can not only change the structure of the polymer side chain, effectively change the surface properties of the copolymer does not significantly increase the cost of practical significance, the use of the synthesis of fluorinated monomers are fluorinated alcohols with the ( methyl) acrylic acid ester; with perfluoroalkyl iodides and alkyl (meth) acrylate reaction of two preparation methods. 3M, DuPont, Asahi Glass Company and Osaka Organic companies have production. Acrylate copolymer can be γ-ray, peroxide or azobisisobutyronitrile initiator, can be a bulk polymerization, solution polymerization or emulsion polymerization, such fluorinated side chain in the film, you can focus on Tu membrane surface to maximize the role of fluorine atoms, has excellent water resistance and stain resistance. Currently abroad, acrylate has been successfully applied to optical coatings, automotive coatings, architectural coatings and fabric treatment agent aspects.
Tsinghua TANG Liming, etc. to PVDF and polyacrylate as raw materials were synthesized by emulsion polymerization performance of the modified polyacrylate emulsion. The emulsion with good adhesion to the substrate surface and film performance after the film, can be requested resistant to pollution, heat resistance, viscosity and other areas of medicine and not for substrate surface modification, such as for textiles, leather products, water,vibram 5 fingers, oil field agent.
Conclusion
With the continuous research and development of new materials and improvement of organic fluorine coating will be more in-depth, performance will be more outstanding, to meet different industry or the requirements of the different areas of the coating needs. At the same time, as people's awareness of environmental protection, organic fluorine coating will also be towards non-polluting, environment-friendly direction. Organic fluorine coating of paint as a variety of best performance, will increasingly attracted attention and been widely in specific areas, deep-level applications.
