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What is 2k aerosol?2K aerosol is a pressure dispenser as self-contained package, and has at least two parts of components. When the two components are mixing in the aerosol can, they forms a mixture. The mixture is dispersed and form aerosol under the propellant pressure when the nozzle is pressed. What application fields for 2k aerosol?2K aerosol technique facilitates the application of a mixture from two components which are separated that prevent mixing before activation. Two component (2K) paints, foams, adhesives, hair dyes are the application examples. the propellant pressure. What is 1k aerosol paint?1K aerosol paints contain the solutions of thermoplastics dissolved in solvents. The polymers without reactive functional groups are called thermoplastics. Because it becomes soft under heating. 1K aerosol paints form film when the solvents evaporated. The dried film of 1k aerosol is re-soluble with original solvent, and therefore, called lacquer. What are the disadvantages of 1k aerosol paints?Polymer properties depend on molecular weights. High molecular weights are required for polymers that provide useful properties. That is why polymer science is called macromolecular science. However, high molecular weight thermoplastics are difficult to be dissolved in solvents. For increasing solubility, reduce molecular weight, and therefore, sacrifices properties. 1K aerosol paints form film after solvents evaporated. 1K aerosol paints made of thermoplastics contains typically 3-5% of solids. Low solids mean low coverage. Because there is no chemical bonding between thermoplastics and substrates. The lack of bonding means low adhesion to the substrates. Thermoplastics are re-dissoluble by many solvents. They are not resistant to solvent or chemicals. Other properties, such as weathering resistance, mechanical strength, etc., are very poor. That is why 1K aerosol paints are unacceptable for industrial standards. There are two types of 2k aerosol paints. The first type of 2k aerosol paints contains reactive functional polymer or oligomer in the first component, and the second component contains cross-linker. When the two components mixing, the reactive functional polymer or oligomer react with cross-linker and form reactive mixture. The final product of the reactive mixture are cross-linked macromolecules. The second type of 2k aerosol paints contain reactive polymer or oligomer in first component, and the second component contains catalyst or initiator. When the two components mixing, the reactive functional polymer or oligomer react under the action of catalyst or initiator. The final product either the cross-linked macromolecule or polymers with high molecular weights. Paint consists of cross-linked macromolecules are insoluble in original solvents, and therefore, is called enamel. The final products of 2k aerosol paints are either cross-linked macromolecules or high molecular weight polymers. Since 2K aerosol paints can use polymer, oligomer and cross-linker which have low molecular weights in original components. Therefore, high solids 2K aerosol paints are possible. For example 40-60% solids of 2K aerosol paints can be prepared. It means one bottle of 2K aerosol paints equal to 10-20 bottles of 1K aerosol paints. Since the final products of 2k aerosol paints contain high molecular weight polymers or cross-linked macromolecules. The cross-linked macromolecules have superior properties of mechanic strength, chemical and solvent resistances comparing to low molecular weight thermoplastics. The exist of reactive functional groups of 2k aerosol pants provide the opportunity to form strong chemical bonding between macromolecules and substrates. Cross-linked 2k enamel are heat resistant, they do not soften under heating. We supply 2k fluoro-urethane paint. Other 2k aerosol products are based on custom production. Material properties are essential. 2k aerosol fluoro-urethane combine the best paint material with application convenience of aerosol. Fluoro-urethane is true stain-resistant due to its excellent chemical resistance, water repellent (hydrophobic), and oil repellent oleophobic). Hydrocarbon coatings, such as epoxy, acrylic, or urethane are intimates to hydrocarbon materials. Therefore they are oleophilic. Most of hydrocarbon coatings have high water absorption. Those materials are neither chemical resistant, nor stain-resistant. Fluoro-urethane is resistant of boiling water and most chemicals. Hydrocarbon coatings, such as epoxy and acrylic are failure in boiling water. Epoxy is liable to both acidic and solvent attacks. Acrylic and urethane are liable to acidic, alkali, and solvent attacks. Many chemicals attack epoxy and acrylic. Cleaners, such as concentrate acidic cleaners, concentrate alkali cleaners, or cleaners contain solvents attack hydrocarbon polymers such as epoxy, acrylic, or urethane. We specially formulate 2k fluoro-urethane with two functions: self-cleaning and primer-less. There are three kinds of stains: hydrophilic, oleophilic and chemical reactive.
If a surface is hydrophilic, water soluble stain or mildew will bond to the surface.
If a surface is oleophilic, a hydrocarbon oil intimate stain will bond the surface.
If the surfaces are unstable toward the chemicals, the chemical reactive stain will
bond the surfaces. Fluoro-urethane coated surfaces are hydrophobic and oleophobic
(oil repellent), and chemical stable. That is why the
fluoro-urethane coated surfaces are stain resistant. For example, a bathtub was coated with 2k fluoro-urethane and the drainage system is in good shape, when people take shower, the dirty will go with the water. It is called self-cleaning. If the drainage system has problem, or the water cannot flow. The dirty will be cumulate. If a fluoro-urethane coated surface is covered with stain, you need soft foam with a cleaner to remove stains. If water repellence reduced, using acidic cleaner and water to remove soap scum. If oily scum cumulated, use alkali cleaner and water washing. It soil and hard water deposit cumulated, use acidic cleaner and water washing. If waterborne paint dropped on coated surfaces, use alkali and acidic cleaners. If solvent borne paint or graphite painted on the surfaces, use water and detergent or solvent, such as xylene to cleaning the surface. Never use a ketone solvent to clean the surface. Never use nylon scrub or abrasive cleaners. No scrubbing will be necessary. If glass beads or sand broadcasted non-skid fluoro-urethane coated surfaces hold dirty, use long hair soft brush with detergent solution to clean the surfaces. Common paints require primers to bond between substrates and paints. Fluoropolymers are difficult to be hold on substrates due to their anti-adhering nature. Our research solved the bond problem and provides the primer-less 2k fluoro-urethane paint. Back to TopThe basic physics behind the slipping is that: when water can form continuous film between
a foot and a smooth hydrophilic surface, the surface is slipping. A continuous water film can
not form between a foot and a water repellent surface (hydrophobic), or between a foot and
coarse surface, therefore, it is non-skid even when wet. We can formulate abrasion and wear resistant 2k fluoro-urethane for aircraft leading edge coatings. It can also be used for wheel cover and automobile front against collisions with dusts and insects. We have experience to formulate anti-adhering coatings against sea grass and binnacles for marine under-coatings. The surface consists of oxide or the surface contain oxide. There are several groups fit in those category: the porcelain, ceramics, glass, cement, natural stone, metal surfaces with anodizing treatment, metal surfaces formed by natural oxidation process, the paints containing metal oxide pigments, the plastics containing metal oxide pigments, wood, leather, textile and all common primer, plasma treated polyethylene or polypropylene. The surfaces should be clean and mechanically strong same as all painting practice. Detergent water, clean water wash, sanding with sand papers are easiest way to remove surface contamination. Silicone, wax, grease, oil should be totally removed. Use vinyl or latex gloves and never touch the surfaces with bare fingers. Human can distinguish millions of millions of color hues. It is impossible for any company to stock paints with so many colors. Color communication are complex. The color of paints are the light after absorption of source light by pigments. It is principle different seen on monitors. On computer screen you see mixing emission dots of red, green, and blue colors defined by hexadecimal (HEX) value. Color printing uses the mixing color dots of of cyan, magenta, yellow and black. Color paints do not use color dots. For match 11,000 paint refinish colors on market, a minimum 70 tinters (opaque, metallic, transparent, pearly and special effects) are required. Exact color match is impossible. Two batch of pigment mixing with exact same formulation produce color with a little different hues. For example, on auto assembling line color expert is needed to select door to match a auto body. There is no united color communication standard. We adopt three color codes, the standards: the Federal Standard 595B colors, PPG color cards for Import and Domestic Color information, and Sherwin-Williams color cards for aircraft. We can accurately match those colors and manufacture 2k fluoro-urethane aerosol paints, if reasonable order amount are placed. Functional acrylic urethane curable under ambient temperature is a choice. Other resins are possible, but a technical discuss is required. Fluoro-urethane has been used in aerospace, architecture, chemical
process, hobby, marine, military, transportation, home improvement, and many
other field. "Know How" for complex fluoro-urethane system is
ingredient of 2k aerosol. The touch-up and small job, such as bathtub refinish
and car wheel coating are well suitable. The application field of 2k fluoro-urethane
aerosol is limited only by our imagination. Waterborne paints are environment friendly. Film formation of waterborne paints including 2k paints depend on coalescing of temporary plasticized particles. The film quality can not match the solvent borne 2k paints. If the film quality is not concern, we can supply those 2k aerosol paints. Aerosol paint has Proper Shipping Name: Aerosols, Hazard Class: 2.1, Label: Flammable Gas, UN Identification Number: UN 1950, IMDG Page: 2102. Packaging Instructions Passenger Aircraft and Cargo Aircraft: 203. Each cylinder (can) should not exceeding 1 Liter; IATA LTD QTY Pkg Inst: Y203, IATA LTD QTA Max Qty per Pkg: 30 kg G, UPS Max Capacity per inner reciptacle: 1L, UPS Max Net Qty per Pkg 30 kg G. 2K aerosol paints must used during 8-12 hours after activation. Otherwise the whole contents will be solidified in the aerosol can. Since 2k aerosol paints contain high solid. 2k aerosol paint is a green technology due to it reduces solvents wasted, and reduces air pollution. One can use the coated surfaces after primary curing. It may take 10-16 hours after spraying of 2k aerosol paints. It requires: (1) the solvents evaporate from coated surfaces, (2) and resin in 2k aerosol paint undergoing cross-linking reactions (curing). If evaporation of solvents can be accelerated (by fanning) curing period can be reduced to 6-8 hours.
In well ventilation conditions major solvents in 2k aerosol paints evaporate during 5-15 minutes, during that time the resin in 2k aerosol paint undergoing cross-linking reactions (curing) and made the surface tack free. In common conditions most solvents in 2k aerosol paints evaporate during 6-8 hours, after that time the resin in 2k aerosol paint undergoing cross-linking reactions (curing) during another 6-8 hours. If evaporation of solvents can be accelerated (by fanning) curing period can be reduced to 6-8 hours. >
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