Uv coatings uv coating fluid revo uv curable coatings. Us6500877b1 uv curable paint compositions and method of. While it would be better to compare the uv curables with an acrylatepolyurethane blend of the same composition as the uv curable, blend properties. A wide variety of uv curing paint options are available to you, there are 617 suppliers who sells uv curing paint on, mainly located in asia. Recently, the automotive industry has discovered that uv cured coatings are. In addition, uv curing has found many other uses such as. Manufacturing and use of uvcurable powder coatings do not require any permits, special air handling, operator breathing devices or flammability restrictions or controls. Also, there is limited flaking and waste with revo coatings. Uv curable waterbased coatings can be used where traditional waterbased or uv coatings come to their limits. Roymals uv ultraviolet curable coatings are formulated to perform as primers and topcoats. Uv curing is the process by which ultraviolet light is used to initiate a photochemical reaction that generates a crosslinked network of polymers.
Turn off the lamp and unplug it when the paint has cured. It is also used for repairing pcb after soldering, rework. An ink composition comprising an ultraviolet radiation curable carrier incorporating a coloured base pigment which emits visible radiation of a first wavelength, and a quantity of luminescent pigment which emits visible radiation by phosphorescent decay or under illumination by longwave ultraviolet radiation at a second wavelength wherein the concentration of said luminescent pigment is. Book on paints amp coatings formulations manufacturing. Conventional nail polish consists of a polymer, most commonly nitrocellulose, dissolved in a solvent, usually ethyl acetate or butyl acetate.
The paint composition comprises a mixture of one or more. Uv curable coating formulations were prepared by mixing the gptmsmodified silica particles and cycloaliphatic diepoxide resin, photoinitiator irgacure184 and thioxantone. Ppgs raycron advanced technology offers an outstanding finish and. The coating had to be very tough and flexible to maintain adhesion without cracking from objects striking the molding. The uvcurable ink jet ink composition according to claim 1, wherein the fluorescent brightening agent is a thiophene benzoxazoyl derivative. Ultra violet and electro beam ppg industrial coatings. Each mechanically duplicates the radiant energy of sunlight to affect the curing. Apr 01, 2004 one of the lesser known applications is the use of a uv curable clearcoat over moldedincolor body side moldings. Wait the necessary few minutes after repositioning. This behaviour is extremely encouraging for the further development of uv curable coatings, since the second best coating in this test series, a highly crosslinked polyurethane coating used as sealer, can also exhibit high scratch resistance, but suffered from lower etch resistance figure 10. These coatings are custom formulated for each product application and are available in a clear coat or colors and at various gloss levels. Monomers act similar to solvents in solventborne paints if lowering viscosity is the only function of a monomer it is called monofunctional monomer e.
Because of the use of low molecular weight monomers or oligomers, the composition is essentially free of volatile organic solvents, and therefore evaporative emissions in curing are substantially eliminated. Custom ultraviolet uv curable coatings are chemical resistant epoxy coating. The graphics industry was one of the first to adopt this technology, with a high gloss coating on cards. Master bond ep40med, a two part epoxy system, combines toughness and a low tensile modulus while still. The method involves corona treatment of the substrate, applying an acrylic primer layer and a barrier coating composition. Each formulation was prepared in a beaker with ultrasonic stirring for 1 h until they become clear and homogeneous. Because they do not cure without uv irradiation, restrictions are few in the coating process.
Scientists discovered more than 40 years ago that paint can be dried quickly, or cured, with ultraviolet uv light. Uvcurable acrylic urethane clearcoats for automotive applications a crylic urethane coatings are used in both automotive manufacturing and refinishing because of their versatility, durability, appearance, superior weatherability and acidetch resistance compared to other resin systems. Preparation and characterization of uvcurable epoxysilica. Wash away the extra paint by gasoline or oil base solvent this paint is used to protect pcb traces from corrosion, moisture. This attractiveness can be expressed in being environmentally friendly, and having the ability for spray application, powder recycling, and relatively fast cure compared to conventional powder coatings. Uv curable coating composition bayer materialscience llc. The graphics industry was one of the first to adopt this technology, with a high.
Pdf uv curable urethane acrylate coatings formulation. Employing either radical or cationic curing mechanisms, the crosslinking of these coatings is initiated by means of uv light. Uv curing is adaptable to printing, coating, decorating, stereolithography, and. Viscosity changes from monomer to uv cured coating. Monomers low molecular weight substances reducing the viscosity of the radiation curable coatings. Uv curable coatings antiabrasion and antiscratch coatings. The composition and application of uvcurable adhesive. Automobile or other item painted with uv sensitive paint.
Liquid forms of uv curing systems are solventfree, require low energy for curing, and are adaptable to most conventional coating methods. The radiation from the uv light causes the photo initiator in the ink formulation to cleave and initiate the polymerization process. Material handling and cleanup are very simple and easy. Aug 12, 2016 an introduction to the chemistry of uv curable coatings uv curable coatings are growing in popularity because they cure fast and are environmentally friendly.
The worldwide consumption of ultraviolet uv curable acrylate formulations in the year 2000 was approximately 140,000 tons. Due to the low amount of curable compound in the whole system, the crosslinking density of such products is not very high and therefore the resistance against chemicals is not as high as with conventional uv products. While it would be better to compare the uvcurables with an acrylatepolyurethane blend of the same composition as the uvcurable, blend properties. Because of nonsolvent, onepart resin, they provide good workability. Uv cure coatings are cured using ultraviolet lamps, similar to fluorescent lamps found in many homes and office buildings. Chapter 9 answers frequently asked questions on the use of uvcurable inks. This product exhibits a smooth satin finishes, reduced burnishing resistance, ease of application, fast tack time and good cure speed. Fluoracryl 3298 is a hydrophobic, oleophobic fluoroacrylate uv curable oligomer with excellent resistance to solvents, oils, stains and abrasion. In accordance with one aspect of the invention, an ultraviolet light curable paint composition is provided. Us5773487a finishing composition which is curable by uv. Uv cure cationic epoxy adhesives are primarily composed of cycloaliphatic epoxy. A sprayable coating composition is formulated using one or more acrylates and one or more photoinitiators which act to polymerize the composition when exposed to ultraviolet light. Uv curable acrylic urethane clearcoats for automotive applications a crylic urethane coatings are used in both automotive manufacturing and refinishing because of their versatility, durability, appearance, superior weatherability and acidetch resistance compared to other resin systems.
The finished product will have low to no odor to it. Our uv coatings are clean and green with no solvents, no vocs, no haps, no chrome, no isocyanates, and no toxics release inventory components our uv light curable coatings provide advantages of efficiency and economy, with cure in seconds and improved. Aqueous waterbased uv cure coatings are oven dried water removal is required and uv cured inline or offline depending on the press configuration. In comparison to other technologies, curing with uv energy may be considered a low temperature process, a high. Ep2657308a1 aqueous radiation curable coating composition. By its drying mechanism, the uv curable waterbased coating represents a superior adhesive agent for the uv high gloss coating. Cardinals u4uacle156 is a solventborne uv curable urethane acrylate satin finish. Benefits of uvcurable powder coatings keyland polymer.
Feb 02, 2012 the uv curable ink jet ink composition according to claim 1, wherein the photopolymerization initiator content in the uv curable ink jet ink composition is 3. Uv curing is adaptable to printing, coating, decorating, stereolithography, and in the assembly of a variety of products and materials. Uv coatings by reinhold schwalm book read online scribd. Ultra violet and electro beam ppg ultraviolet and electrobeam coatings ppg uveb coatings are fast, tough and easy on the environment. Industrially manufactured parquet is one of the domains of uv curable coatings because they can be easily roller coated and cured at high speed. Move the lamp, if necessary, to make sure all the painted surfaces receive uv light. A radiation curable coating composition comprising a about 5 to 95% by weight of the reaction product of i one or more di andor polyisocyanates and ii a hydroxyl component comprising iia one or more hydroxy functional lactone ester methacrylates having a number average molecular weight of about 200 to 2000 and having the formula. Finishes unlimited manufactures exterior grade, uv curable coatings for construction and industrial products produced from pvc, fiberglass, wpcs, cementitious, and other composite substrates. The ecological aspect of formulating solventfree lacquers with this technology is beneficial, as legislation for emissions of organic solvents becomes increasingly stringent. Each mechanically duplicates the radiant energy of sunlight to affect the curing process, converting a liquid coating into a solid, cured film. Uv powder is safe to make, safe to use, and can easily be recycled. Cardinals u4uacle02 is a solventborne one component uv curable gloss urethane topcoat. About uvcuring resins technical information threebond.
Initially, this coating was developed to decrease the yellowing on exterior exposure of vinyl body side moldings. As countries around the world pay more and more attention to the environment problem, the development of uv curable adhesive is also growing rapidly. An introduction to the chemistry of uv curable coatings. May 31, 2001 the uv curable component is stabilized in the aqueous phase by the non uv curable acrylic dispersion. Chapter explains the effect of ultraviolet energy on organic materials. Uv curable coating technology provides benefits in terms of good performance, environmental compatibility and processing efficiency. Mechanic 10ml green uv solder mask pcb bga paint prevent corrosive arcing soldering paste flux cream welding fluxes oil. Our uv coatings are clean and green with no solvents, no vocs, no haps, no chrome, no isocyanates, and no toxics release inventory components our uv light curable coatings provide advantages of efficiency and economy, with cure in seconds and improved performance with much less material usage.
An introduction to the chemistry of uv curable coatings uv curable coatings are growing in popularity because they cure fast and are environmentally friendly. For both uvebcuring units, production rates are determined by the composition and applied thickness of the uvebcured material, intensity of radiant energy in. Highperformance uvcurable urethane acrylates via deblocking. Uv cured coatings finishes unlimitedfinishes unlimited. The main part of the book will deal with new developments, like waterbased uv coatings, uv powder coatings and dual cure systems, cured. Liquid forms of uvcuring systems are solventfree, require low energy for curing, and are adaptable to most conventional coating methods. Cardinals u4uacle04 is a solventborne one component uv curable gloss urethane topcoat. It is a high solids low voc material that leaves a beautiful glossy finish. Uvcurable adhesive has the characteristics of energy conservation, environmental protection and fast curing. Kester tc533 latex solder maskhightempflexible 8 oz 12 pint. Recently, the authors invented and reported a new type highperformance uv and thermal curable hybrid epoxy adhesive that is completely an initiator free composition but still possesses good uv curability and satisfactory thermal curability, suitable for use in highend display assembly applications 40, 41, 42.
Fluoracryl 3298 is a hydrophobic, oleophobic fluoroacrylate uvcurable oligomer with excellent resistance to solvents, oils, stains and abrasion. Gloss measurement an overview sciencedirect topics. In automotive refinishing, the most common coating type is the. One of the lesser known applications is the use of a uv curable clearcoat over moldedincolor body side moldings. Uvcurable coatings are important in this field because of their excellent chemical resistance and fast curing times. Purpose the purpose of this work was to perform a systematic study on the effect of formulation on the physical and mechanical properties of ultaviolet uv curable urethane acrylate resins. When it is applied the solvent evaporates, leaving the polymer to form a film on the nail. Aug 01, 2002 uv curable powder coatings are attractive due to the combination of properties of powder coatings and uv curing. Read unlimited books and audiobooks on the web, ipad, iphone and android. Pdf the market for ultraviolet curing technology has been growing at double digit.
The uvcurable ink jet ink composition according to claim 1, wherein the photopolymerization initiator content in the uvcurable ink jet ink composition is 3. Manufacturing and use of uv curable powder coatings do not require any permits, special air handling, operator breathing devices or flammability restrictions or controls. In uv curable systems the photon absorption of uv visible electromagnetic radiation initiates the curing reactions where in eb cure systems the high energy electrons play the role of excitation 3. For example with regard to the application of a uv coating on a waterbased primer. Substrates for 3298 include pcbs, plastic, metal, glass and ceramic. Uv curing is based on the principle of photoamorced polymerizations, the conversion of a liquid resin into an insoluble polymer material under.
This finish is designed to finish musical instruments and other sealed wood products. Paint technology hand book with formulations acrylic emulsion, powder coating, levelling agents, pu ink binders, dispersing agents, formaldehyde, polyester resin, acrylic binders and pu coatings. The uv curable ink jet ink composition according to claim 1, wherein the fluorescent brightening agent is a thiophene benzoxazoyl derivative. Uv ultraviolet and eb electron beam are two advanced technologies used for curing todays high performance polymer coatings.
Full list of master bonds uv curable polymer systems. Adhesive polymer resins that are also contained within the formulation help the polymer film to stick to the nail. Nanofabrication using nanomaterials 175 6 uvcurable nanostructural composites. Automotive applications of uvcured coatings products finishing. Revo coatings are a very low odor, highquality uv curable coating. Effect of coating composition on uvcurable powder coatings. These coatings exhibit superior adhesion, color hold, gloss. Automotive applications of uvcured coatings products. As a result the time saved in the auto industry was drastic, as was the turnaround time for automotive body repairs. Expose it under uv light or sun for a few minutes wash away the extra paint by gasoline or oil base solvent. Uvcurable powder coatings are attractive due to the combination of properties of powder coatings and uv curing. Uvcurable coating technology provides benefits in terms of good performance, environmental compatibility and processing efficiency.
This paper introduces the composition of uv curable adhesive prepolymer,active diluent, photoinitiator. This aqueous uv cure chemistry is based upon acrylic and polyurethane backbone polymers. Review of basic chemistry of uvcuring technology article pdf available in pigment and resin technology 335. Uv curable dispersions produce an even coating on a variety of substrates even surfaces where its typically difficult for coating to adhere. Because of the use of low molecular weight monomers or oligomers, the composition is essentially free of volatile organic solvents, and therefore evaporative. Because the curing speed is fast, working hour is shortened. Ultraviolet uv curing is a photochemical reactionphotopolymerizationwhen specialized coatings are exposed to uv light they cure, instead of relying heat and time to evaporate carriers like in solventbased coatings. Water borne coatings an overview sciencedirect topics. The present invention is directed to a coating composition for use in the graphic arts comprising, based on the total weight of the coating composition, 30 to 95 % by wt.
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