629results about "Polyurea/polyurethane coatings" patented technology

An aqueous ultraviolet-absorbing resin emulsion, and an aqueous resin emulsion composition containing the emulsion is provided, wherein the emulsion is excellent in compatibility with a synthetic resin and light resistance. Also, the emulsion improves stability in blending with an aqueous emulsion of the synthetic resin, and prevents bleed out of the ultraviolet-absorbing resin on the surface of a coating film. Further, the aqueous ultraviolet-absorbing resin emulsion imparts excellent alkali or solvent resistance to a synthetic resin poor in alkali or solvent resistance. More specifically, an aqueous resin emulsion composition comprising (I) an aqueous ultraviolet-absorbing resin emulsion and (II) an other aqueous resin emulsion is provided, wherein the emulsion (I) is obtained by urethanizing (A) a polyol component having an ultraviolet-absorbing group {e.g., 1,1-bis[3-(2H-benzotriazol-2-yl)-4-hydroxy-benzeneethanol]methane}, (B) a polyol if necessary, (C) an alkyl or aryl dialkanolamine compound, and (D) an organic polyisocyanate in (E) an organic solvent, diluting the reaction mixture with (F) an organic solvent having a boiling point lower than 100° C. to give a resin solution, neutralizing the resin solution with (G) a neutralizing agent, and dispersing the resultant in water.

The application discloses a method for modifying the interface performance of a carbon fiber composite coating through two-step chemical reactions, modified carbon fiber and application. The method comprises the following steps: performing silanization modification treatment and hyperbranched modification treatment on the carbon fiber after oxidation treatment to obtain the modified carbon fiber. The method for modifying the interface performance of the carbon fiber composite coating through two-step chemical reactions is suitable for improving the interface performance of the carbon fiber composite coating. After the modified carbon fiber is mixed with a resin and a curing agent and is cured, the obtained carbon fiber reinforced composite coating has excellent mechanical properties, wear resistance and erosion and impact wear resistance, and can effectively reduce the corrosion, erosion and wear and tear of a steel structure facility in a complex and harsh marine environment such as a splash area.

The present application relates to a kind of anti-pulverization water-based polyurethane ink-absorbing coating and its preparation method and application, belong to water-based paint technical field.The coating includes by weight parts: epoxy modified water-based polyurethane resin 4560 parts, polycarbodiimide crosslinking agent 610 parts, inorganic filler 15 parts, film-forming aid 2.54 parts, wetting and leveling agent 0.52 parts, defoaming agent 0.050.2 parts and deionized water 2030 parts.The present application is constructed rigid and tough network by epoxy modified resin and polycarbodiimide crosslinking agent, and realizes stress dispersion by means of surface modified nanosilica, improves the problem that anti-pulverization, fast ink-absorbing and water resistance in ink-absorbing coating are difficult to take into account.The obtained coating has excellent anti-pulverization, fast ink-absorbing and good water resistance, and is suitable for digital inkjet printing substrate.

The application relates to the technical field of coatings, in particular to a low-temperature self-repairing water-based paint as well as a preparation method and application thereof. The low-temperature self-repairing water-based paint provided by the application has multiple core performances of stable film forming at a wide temperature range of 5-35 DEG C, rapid self-repairing at normal temperature of 10-30 DEG C, crack resistance and flexibility, wear resistance and corrosion resistance, meanwhile, the problems of high-temperature triggering, poor low-temperature fluidity, low repair efficiency, imbalance between flexibility and wear resistance, insufficient adhesion and the like of traditional self-repairing paints are avoided, the comprehensive performance is balanced and excellent, the preparation process is controllable, the construction adaptability is strong, and the low-temperature self-repairing water-based paint is suitable for the protection requirements of substrates in scenes such as metal corrosion prevention, building outer walls, cold chain equipment and the like which need normal-temperature rapid repair under no heating condition.

The application relates to the technical field of high-molecular composite materials and gas barrier materials, and particularly discloses a functionalized graphene reinforced polyurethane nanocomposite material as well as a preparation method and application thereof. The nanocomposite material comprises a polyurethane matrix containing Diels-Alder dynamic covalent bonds and functionalized graphene nanofillers dispersed in the polyurethane matrix; wherein the functionalized graphene surface contains active groups capable of chemically reacting with the polyurethane matrix; the dynamic Diels-Alder bonds are simultaneously present in the polyurethane network and the dynamic Diels-Alder bonds are simultaneously present at the filler-matrix interface in the composite material. By simultaneously introducing the dynamic Diels-Alder bonds in the polyurethane network and the filler-matrix interface, the self-repairing capability of the material after damage is realized, and the mechanical properties and hydrogen barrier properties of the material are significantly improved.

The present invention relates to a two-component clearcoat composition and preparation and use thereof. The present invention provides a two-component clearcoat composition comprising component I comprising A) a hydroxyl-containing (meth)acrylic resin, B) a melamine resin and C) a polyol ester which is a product obtained by reacting one or more selected from the group consisting of castor oil, castor oil monoglyceride, and castor oil diglyceride with a primary hydroxyl-containing polyol and optional polybasic acid or anhydride; and component II comprising D) a polyisocyanate, wherein a clearcoat film obtained from the two-component clearcoat composition has a molecular weight between crosslinked sites of 300 to 700 g / mol. The two-component clearcoat composition according to the present invention can form a clearcoat film with excellent finished product appearance, and high hardness, and resistance to petroleum product and water.

Embodiments of the present application disclose an encapsulation material, a display panel, and an encapsulation method. By mass percentage, the encapsulation material includes a main resin, 20%-50%; a dilute monomer, 20%-50%; a stabilizer, 0.01%-2%; a microgel, 1%-10%; a chain transfer agent, 0.01%-5%; and an initiator in a remaining percentage balance. The encapsulation material can be cured under action of UV light to form an encapsulation layer, anti-aging performance of the encapsulation layer can be improved, and toughness can be enhanced to reduce warpage. The microgel structure can enhance the toughness of the encapsulation layer and make it have excellent corrosion resistance. Ester activated vinyl sulfonate is used as the chain transfer agent to make an average chain length in a polymer network shorter, reduce a risk of shrinkage cracks appearing during curing, and enhance the toughness of the encapsulation layer after the curing.

Thermoplastic primer compositions may include a high surface energy thermoplastic resin having a surface energy of 37 dynes / cm or greater, at a percent by weight (wt %) of 55 wt % to 90 wt %; a low surface energy thermoplastic resin having a surface energy of less than 37 dynes / cm, at 10 wt % to 45 wt %; wherein the thermoplastic primer composition has a glass transition temperature in the range of 60° C. to 120° C. Multilayer compositions may include a substrate having a surface energy of 37 dynes / cm or greater; a primer layer containing a thermoplastic primer composition; and one or more thermoset adhesive layers.

The application discloses a kind of bio-based LED light-cured top-dipping pencil paint and its preparation method and application, including the following mass fraction of composition: epoxy acrylate: 27%~40%, epoxy soybean oil acrylate: 12%~15%, di-functional polyurethane acrylate: 8%~30%, dipropylene glycol diacrylate: 10%~20%, fumed silica: 0.2%~0.5%, inorganic filler: 10%~20%, photoinitiator: 5%~10%, auxiliary agent: 0.5%~1%. The pencil paint of the application meets the requirements of relevant laws and regulations for pencil paint export, the bio-based carbon content is greater than or equal to 15%, uses LED lamp to cure, is energy-saving and environment-friendly, the paint film has high flexibility, can be used for eyebrow pencil, and there is no risk of subsidence.

The present invention provides a curable composition that has a sufficient pot life, exhibits superior coatability and adhesion compared to conventional compositions in the absence of volatile organic solvents, and provides a coating film with superior physical properties compared to conventional compositions as a top coating. [Solution] A two-component curable composition having a first component A and a second component B, wherein the first component A comprises a polyamine compound A1, the polyamine compound A1 comprises aspartic acid ester amine A1A, the second component B comprises a polyisocyanate compound B1, the polyisocyanate compound B1 comprises a uretdione compound B1D having two isocyanate groups and a urethane prepolymer B1P, the aspartic acid ester amine A1A, the uretdione compound B1D and the urethane prepolymer B1P are present in predetermined amounts, and the first component A and the second component B are substantially solvent-free.

The application provides an antifouling coating material, an antifouling coating and a preparation method and application thereof. The antifouling coating prepared from the antifouling coating material provided by the application has a water contact angle of 105.8-161.5 degrees and a sliding angle of 1.5-24.1 degrees in a wavelength range of 200-2500 nm; a light absorption rate of 65.7-98.3 %; and a maximum light-heat surface temperature of 45.1-82.8 DEG C under 1 solar light intensity. Moreover, the antifouling coating has synergistic antifouling of superhydrophobic low adhesion and biological repellence, wide-spectrum high-efficiency and controllable light-heat antifouling capacity, all-weather antifouling capacity facing the air-water interface of the sea, and excellent mechanical durability and light-heat / wetting performance stability.

The application discloses a polyurethane emulsion sunscreen film and a preparation method thereof. The sunscreen agent is surface grafted and modified by a silane coupling agent, so that the sunscreen agent is connected with a polyurethane molecular chain in a covalent bond, thereby solving the problem of weak interface bonding force and easy falling in traditional physical blending. On this basis, the molecular structure of the polyurethane matrix is ingeniously designed, and the grafted sunscreen agent is actively guided to migrate and enrich on the surface of the coating in the emulsion film forming process. The "surface enrichment" structure makes the sunscreen agent concentrate on the surface of the ultraviolet light, realizes the maximization of the function, and thus a high ultraviolet protection factor is obtained under a low addition amount. Meanwhile, the internal matrix can keep its flexibility and mechanical integrity due to the avoidance of a large amount of filler filling, and the chemical bonding on the surface ensures the long-lasting and wash-resistant sunscreen function, so that the synergistic effect of high efficiency, durability and mechanical performance balance is finally achieved.

The present application relates to the technical field of energy storage equipment protection, and particularly relates to a phase change protective coating for an energy storage container and a preparation method thereof, which comprises, by total mass 100 parts, epoxy modified polyurethane 40-50 parts, lauric acid 10-15 parts, paraffin 5-8 parts, GPTMS modified boron nitride 3-6 parts, VTES modified nano-silicon dioxide 2-5 parts, leveling agent 0.5-0.7 parts, defoaming agent 0.3-0.5 parts, curing agent 7-9 parts, and diluent 10.8-17 parts; the GPTMS modified boron nitride is obtained by modifying 50 nm boron nitride with GPTMS and has a modification degree of 85%, and the VTES modified nano-silicon dioxide is obtained by modifying 30 nm nano-silicon dioxide with VTES and has a modification degree of 80%. The present application uses specific composite phase change materials and cooperates with a pretreatment process, so that the phase change components are uniformly dispersed, the problems of leakage and agglomeration are avoided, the stable phase change function of the coating is ensured, the environmental temperature fluctuation can be effectively smoothed, and stable operating temperature conditions are provided for the energy storage equipment.

This invention relates to the field of coating technology and discloses a UV coating with antifouling effect and its preparation method. The UV coating of this invention comprises a UV polyurethane emulsion, an active diluent, a photoinitiator, and an alkenyl fluorinated silicone oil in a ratio of 100g:(10-14)g:(3-3.6)g:(4-10)g. The alkenyl fluorinated silicone oil contains hydrophobic, low surface energy polysiloxane molecular chains and perfluoroalkyl groups, which are uniformly dispersed in the polyurethane emulsion and the coating film, reducing the surface energy and water contact angle of the coating film, thus improving waterproof and antifouling performance, and significantly enhancing salt spray resistance. The alkenyl fluorinated silicone oil contains alkenyl groups, which can undergo alkenyl crosslinking polymerization with UV polyurethane, introducing flexible polysiloxane molecular chains into the polyurethane coating film, thereby improving the impact resistance and flexibility of the coating film.

A water-dispersible polyisocyanate contains isocyanate groups and sulfo groups. The water-dispersible polyisocyanate includes a reaction product of a polyisocyanate component and a hydrophilic active hydrogen component. The polyisocyanate component includes a bis(isocyanatomethyl)cyclohexane derivative. The hydrophilic active hydrogen component includes a sulfo group-containing active hydrogen compound. The bis(isocyanatomethyl)cyclohexane derivative includes a uretonimine derivative and an isocyanurate derivative. The uretonimine derivative is contained in a proportion of 25% by mass or more and 75% by mass or less relative to the total amount of the uretonimine derivative and the isocyanurate derivative.

The present application relates to a kind of water-based paint for leather surface waterproof, belong to coating technical field.The water-based paint is made of the following components: 80 parts polyether sulfone modified polyurethane-acrylate composite resin dispersion, 5 parts crosslinking agent polycarbodiimide, 10 parts anti-adhesive polydimethylsiloxane, 10 parts cosolvent dipropylene glycol methyl ether, 10 parts nano reinforcing material, 1.5 parts amino-terminated hyperbranched polyamide.Core resin dispersion is prepared by grafting onto polyurethane-acrylate skeleton through sulfonated polyether sulfone chemistry.The present application is prepared by unique resin chemical modification and nanocomposite technology, so that the obtained coating has excellent waterproofness, high adhesion, good mechanical strength and anti-aging property, especially suitable for high requirements such as automotive interior, furniture and other leather surface treatment, while meeting environmental protection requirements.

The application relates to the field of paint, in particular to a high-weatherability metal powder paint and a preparation method thereof; the high-weatherability metal powder paint comprises the following components in parts by weight: 80-100 parts of resin, 5-9 parts of a curing agent, 30-50 parts of a filler, 1-5 parts of an additive, 10-20 parts of pigment, 1-5 parts of a silane coupling agent, 20-30 parts of nitrogen-phosphorus doped graphene, and the nitrogen-phosphorus doped graphene is adopted, so that the adhesion of the metal powder coating and the substrate and the corrosion resistance of the metal powder coating are effectively improved, and the problem of uneven metal powder in the coating process of the metal powder paint can be avoided; the nitrogen-phosphorus doped graphene is coated on the pigment through a specific preparation process, the contact of the pigment with other materials and air is reduced, and then the discoloration of the pigment caused by long-term exposure to air is reduced; the microwave heating is adopted to coat the pigment and the substrate powder in motion, and the method has the advantages of high efficiency and high quality compared with the existing thermal bonding.

To provide a 2-liquid type polyurethane-based coating composition that can form a cured coating film excellent in antiviral / antibacterial properties, coating film appearance, and touch feeling (soft feeling, smooth feeling).SOLUTION: A 2-liquid type polyurethane-based coating composition of the present invention is a 2-liquid type polyurethane-based coating composition that contains a first component containing (A) an antiviral or antibacterial agent, (B) a polyester polyol, (C) a leveling agent, and (D) a hydrophobic silica; and a second component containing (E) a polyisocyanate, and in which, characterized, the volume-based particle size distribution D50 of the particles in the first component is 5.0 μm or less.SELECTED DRAWING: None

The invention relates to a polyether-based thermoplastic polyurethane, the production and use of which for the manufacture of films, foils and coatings, as well as water vapor permeable, planar composite parts comprising at least two layers, wherein at least one layer consists of the polyether-based thermoplastic polyurethane according to the invention, and their use for the manufacture of roof underlayment and facade underlayment.

One aspect of the invention relates to a method for producing a plastic article or semi-finished product from a polymerizable mixture of isocyanates and isocyanate-reactive components, wherein the mixture comprises at least one photochromic dye, at least one surface additive, an isocyanate component and at least one of the following components: - a poly(thio)urethane prepolymer produced from isocyanates and isocyanate-reactive components, wherein the ratio of the two components is such that there is an excess of isocyanate-reactive groups in relation to isocyanate groups; - a poly(thio)urethane prepolymer produced from isocyanates and isocyanate-reactive components, wherein the ratio of the two components is such that there is an excess of isocyanate groups in relation to isocyanate-reactive groups; - a thiol component; wherein the mixture contains at least one photobase generator, a photochromic dye and a surface additive. Further aspects of the invention relate to a plastic article or a plastic article provided with an additional layer, each produced by a method according to another aspect of the invention, as well as a polymerisable mixture.

The application discloses a water-based inorganic coating for a concrete structure and a preparation method thereof. In one aspect, the application provides a water-based inorganic coating for a concrete structure, which comprises an A component and a B component; the A component comprises the following components in a proportion: modified water glass 20-30 parts, fine filler 8-12 parts, ultra-fine filler 6-10 parts, fluorosilicate 0.5-1 part, Portland cement 50-60 parts, retarding water reducing agent 2-4 parts, and water 25-35 parts; the B component comprises the following components in a proportion: polybutadiene type silane-terminated polyurethane prepolymer 30-40 parts, Portland cement 50-60 parts, nano titanium dioxide 18-24 parts, polycarboxylic acid type water reducing agent 1-1.5 parts, and water 35-45 parts. In another aspect, the application further provides a preparation method of the water-based inorganic coating for a concrete structure. The application has excellent deep penetration crystallization performance, and has strong waterproof performance and anti-permeation performance.

The present invention concerns an aqueous radiation-curable polyurethane acrylate dispersion comprising: a) a polyurethane acrylate polymer which is the reaction product of: i) from 10 wt.% to 50 wt.% of an isocyanate monomer; ii) from 5 wt.% to 20 wt.% of a polyunsaturated monomer or polyunsaturated oligomer, which has an iodine value of at least 50 g of I2 / 100g of respectively polyunsaturated monomer or polyunsaturated oligomer, and at least one hydroxyl functional group; iii) from 10 wt.% to 55 wt.% of an acrylate functional oligomer which contains at least one (meth)acrylate group and at least one isocyanate-reactive group; and iv) from 1 wt.% to 10 wt. % of a dispersing agent which contains at least one isocyanate-reactive group and at least one group having a hydrophilizing action; dispersed in b) an aqueous continuous phase; and a coating composition and kit-of-parts with a drying agent; and a coated substrate.

The application relates to the technical field of radiator surface treatment, in particular to an aluminum alloy radiator with a surface coated with heat dissipation paint and a preparation method thereof, wherein the heat dissipation paint comprises graphene composite paint and a protective coating; the graphene composite paint comprises the following components: 5-9 parts of water-based acrylic acid modified polyurethane dispersion, 2-6 parts of water-based acrylic acid emulsion, 30-40 parts of graphene oxide dispersion, 0.2-0.8 parts of wetting dispersant, 0.05-0.2 parts of defoaming agent, 0.05-0.3 parts of leveling agent and 3-7 parts of deionized water; and the protective coating comprises the following components: 10-20 parts of water-based acrylic acid modified polyurethane dispersion, 5-15 parts of water-based acrylic acid emulsion, 0.1-0.3 parts of alkyl glycoside, 0.5-1.0 parts of polyacrylamide, 0.2-0.6 parts of leveling agent and 4-8 parts of deionized water; the radiator has the advantages that the heat dissipation efficiency of the radiator can be improved, and the volume of the radiator is not obviously increased.

To provide a recycled plastic material that enables production of a thin film and a composite woven fabric having waterproof and moisture-permeable capabilities.SOLUTION: The present invention provides a recycled plastic material, wherein a resin raw material comprises a plastic depolymerized product including a first monomer having a structure represented by HO-Rx-OOC-Ph-COO-R'x-OH and a second monomer having a structure represented by HO-Rx-OOC-HN-R-NH-COO-R'x-OH, a polyether polyol, a polyisocyanate, and a solvent. Ph represents a benzene ring. Rx and R'x are each independently selected from -CH2CH2-, -CH2CH2OCH2CH2-, -(CH2CH2O)n- and -(CH2CH2O)nCH2CH2-. n is 6 to 23. R is selected from diphenylmethanediyl, toluenediyl, or a specific cyclic compound.SELECTED DRAWING: None

This invention discloses a durable waterborne polyurethane topcoat and its preparation method, comprising component A and component B. Component A comprises the following raw materials in parts by weight: 50-80 parts of waterborne hydroxyl acrylic dispersion, 30-40 parts of filler, 1-3 parts of dispersant, 0.5-2 parts of waterborne organic bentonite, 0.1-1 parts of defoamer, 0.5-1 parts of wetting agent, 0.2-1 parts of thickener, 2-4 parts of cosolvent A, and 10-25 parts of water. Component B comprises the following raw materials in parts by weight: 60-85 parts of waterborne isocyanate curing agent and 15-40 parts of cosolvent B. The addition of filler can impart excellent corrosion resistance to the topcoat and improve its durability.

This invention relates to the field of thermal energy storage and flame retardant materials technology, specifically to a bio-based carbon aerogel flame-retardant composite phase change material, its preparation method, and its application. Method: Biomass is mixed with a ZnCl2-KCl eutectic salt and subjected to low-temperature molten salt carbonization. After washing and drying, a carbon aerogel is obtained. An organic phase change material is loaded onto the carbon aerogel to obtain a carbon aerogel composite phase change material, which is then mixed with a nitrogen-phosphorus flame retardant and a flame-retardant adhesive to form an inner flame-retardant layer. After a first curing treatment, a shaped composite phase change material is obtained. A mixture of the nitrogen-phosphorus flame retardant and the flame-retardant adhesive is coated onto the surface of the shaped composite phase change material, and after a second curing treatment, the bio-based carbon aerogel flame-retardant composite phase change material is obtained. This invention utilizes a low-temperature molten salt carbonization process to regulate the microscopic chemical structure of the carbon skeleton. By constructing a gas-solid synergistic chemical bonding flame-retardant system, it overcomes the defects of existing technologies while achieving UL-94 V-0 flame retardancy.

Radiative cooling paint mixtures, single-layer radiative cooling paints formed therefrom, and methods of producing and using such mixtures and paints. The radiative cooling paint mixtures contain a water-based silicone-derived binder, water in which the water-based silicone-derived binder is diluted, a hydrophobing agent, and a radiative cooling pigment, and single-layer radiative cooling paints formed therefrom. The radiative cooling paints emit more thermal energy than solar energy they absorb, thereby achieving a passive radiative cooling effect, while simultaneously achieving hydrophobic and weather-resistance properties and enhanced mechanical integrity.

The application provides a self-assembled lignin-based ultraviolet protection gradient coating and a preparation method thereof, and relates to the field of coating technology. The coating comprises a lignin-polystyrene copolymer, 3-pentadecylphenol and an organic resin; the lignin-polystyrene copolymer is a block copolymer synthesized from a lignin compound and styrene through a reversible addition-fragmentation chain transfer polymerization method; the organic resin comprises one or more of an epoxy resin, a polyurethane resin and an acrylic resin; the mass ratio of the lignin-polystyrene copolymer to the 3-pentadecylphenol is 1:0.2-0.3; and the mass ratio of the lignin-polystyrene copolymer to the organic resin is 1:3-5. The obtained coating has the properties of ultraviolet aging resistance, corrosion resistance and high adhesion, and has a wide application prospect.

A polycarbonate diol composition comprising polycarbonate diol having a structure represented by the following general formula (I) and a polycarbonate structure represented by the following general formula (II), wherein melt viscosity at 50° C. is 1000 to 10000 mPa·s, and an average value of the number of repeats represented by n11 in the following general formula (I) is 12 or larger:

The application belongs to the technical field of pressure-sensitive adhesive materials, and particularly relates to a UV adhesion-reducing flexible glass acid-resistant thinning film and a preparation method thereof. The acid-resistant thinning film comprises, from top to bottom, a substrate layer, a buffer layer, a pressure-sensitive adhesive layer and a release film layer. The pressure-sensitive adhesive layer is prepared from the following raw materials in parts by mass: 100-105 parts of an acrylate copolymer glue solution, 5-8 parts of modified two-dimensional hexagonal boron nitride nanosheets, 0.5-2 parts of a crosslinking agent and 2-4 parts of a photoinitiator. The film has excellent acid resistance, no residual glue and no damage after film tearing, and is suitable for the chemical etching thinning protection of flexible glass.