594results about "Priming paints" patented technology

The invention discloses a water-based multi-layer degradable self-polishing ship antifouling coating system and a preparation method thereof, and belongs to the field of marine anticorrosion and antifouling materials. The system is composed of a zinc-rich primer, a modified epoxy intermediate paint and a functionalized finish paint. The finish paint takes polyhydroxyalkanoate as a matrix, and integrates a self-stratification modifier capable of forming a silicon-rich top layer during curing and a latent dual-curing system capable of realizing normal-temperature curing through a synergistic effect. According to the present invention, the mixing mechanism of dynamic self-polishing and static fouling release is adopted, and the innovative curing technology is combined, such that the long working life, the excellent mechanical property and the long-acting antifouling ability are achieved. The drawing adhesive force of the system is not lower than 7.9 MPa, and the environment-friendly requirements that the content of volatile organic compounds is smaller than or equal to 50 g / L, and the content of free diisocyanate monomers is smaller than or equal to 0.1 wt% are met.

The invention discloses a PVC blue protective film and a preparation method thereof. The PVC blue protective film comprises a release layer, a blue PVC base film, a priming coat and a pressure-sensitive adhesive layer which are sequentially arranged from top to bottom. The release layer and the priming coat are respectively designed on the two surfaces of the blue PVC base film, a direct coating and direct collecting process mode is adopted, an additional release film does not need to be used, the preparation process is simplified, the production cost is reduced, meanwhile, a plasticizer in the blue PVC base film can be sealed, and the plasticizer is effectively prevented from being separated out; a direct coating process instead of a transfer coating process is adopted, and the base coating is used for clamping, so that the binding strength of the pressure-sensitive adhesive layer and the blue PVC base film is better; the pressure-sensitive adhesive layer adopts a slit coating technology, so that the coating thickness is more uniform, rolling is not easy to occur, and the stability of product quality is improved; the resin in the bottom coating can react with the isocyanate curing agent in the pressure-sensitive adhesive layer, and the resin in the pressure-sensitive adhesive layer can also react with the isocyanate curing agent in the bottom coating, so that the bonding force between the layers is enhanced.

The invention relates to the technical field of anti-corrosion coatings, in particular to a composite anti-corrosion coating for a medium heavy-duty anti-corrosion environment and a preparation method of the composite anti-corrosion coating. According to the technical scheme, the composite anti-corrosion coating for the medium heavy anti-corrosion environment comprises the following components in percentage by mass: a bottom coating component, a middle transition layer component and a surface coating component, and the mass ratio of the bottom coating component to the middle transition layer component to the surface coating component is 33: 17: 50; the durability is improved through multi-dimensional material innovation, a fluorocarbon resin modified waterborne epoxy system is adopted for the bottom coating, and a nano graphene directional arrangement technology is combined, so that a labyrinth effect is formed, and a corrosion medium is blocked; a solvent-free polyurea and microcapsule self-repairing system is introduced into the surface coating, so that automatic repairing after damage is realized; the middle transition layer enhances the interlayer barrier function through the oriented graphene composite material, and the three layers cooperate to construct a compact protection network, so that the medium permeation path is obviously delayed, and the full-life-cycle maintenance cost is greatly reduced.

The invention provides an aqueous urethane resin composition including: (A) a urethane resin made from (a1) a polyol compound and (a2) a polyisocyanate compound as essential raw materials; and (B) an aqueous medium, in which the polyol compound (a1) includes a polyester polyol made from diethylene glycol and / or ethylene glycol as a raw material, and the urethane resin (A) has an aromatic ring concentration of 1.4 mol / kg or more. This aqueous urethane resin composition has excellent barrier resistance, adhesion, and blocking resistance.

Environmentally friendly primer compositions for rubber to substrate bonding. The primers can include film forming polymers, benzoxazine (BZX) resins, and fillers, in either a solvent-based formulation or an aqueous-based formulation. Some primer compositions can further include a co-resin such as bismaleimide (BMI). Methods of bonding components, including rubber to a substrate, and subsequent bonded assemblies are also provided.

This application discloses a method for producing an anticorrosion coating having excellent adhesion to rusted, low-treatment surfaces, which relates to the field of paint chemical industry. The anticorrosion coating comprises Component A and Component B, where Component A comprises an epoxy resin, double-coated hollow glass microbeads, a thixotropic agent, a wetting and dispersing agent, a pigment, barium sulfate, talc, Solvent A, an antifoaming agent, a first silane coupling agent, and an aluminum powder paste, and Component B comprises a curing agent, an accelerator, and Solvent B.

The invention relates to the technical field of coatings, in particular to a double-layer super-hydrophobic passive daytime radiation cooling coating and application thereof. The super-hydrophobic passive daytime radiation cooling coating is developed through a two-step spraying process. And the bottom layer is formed by combining a high refractive index TiO / Al2O3 composite material and modified polydimethylsiloxane. The top layer employs high band gap SiO to mitigate ultraviolet absorption and combines unmodified PDMS to ensure high thermal emissivity and low surface energy. By accurately controlling the particle size distribution and concentration gradient between the two layers of structures, the optimized SPDRC coating shows excellent optical performance, the solar reflectivity is 93.2%, and the mid-infrared thermal emissivity is 95.4%. Under the direct irradiation of the sun, the temperature reduction of 10 DEG C is obviously lower than that of the environment, and the radiation cooling power of 125 Wm <-2 > is realized. In addition, the coating has a water contact angle of 155 degrees, has strong super-hydrophobicity, can ensure excellent self-cleaning performance and long-term durability, and is suitable for actual outdoor application of building cooling.

The invention provides a preparation method of an oil-resistant and wear-resistant coating for the surface of an antenna tube, and belongs to the technical field of composite coatings. The preparation method comprises the steps of primer spraying, polyurea coating spraying and aftertreatment. In the step of preparing the primer, epoxy resin HY01A and epoxy resin HY01B are mixed to obtain the primer; a preparation method of the epoxy resin HY01A comprises the following steps: adding bisphenol A epoxy resin and propylene oxide butyl ether into a reaction kettle, stirring at 40-50 DEG C to obtain homogeneous liquid, and carrying out vacuum defoaming to obtain the epoxy resin HY01A; the preparation method of the epoxy resin HY01B comprises the following steps: stirring cashew nut shell oil modified amine in a mixed solvent, after the cashew nut shell oil modified amine is completely dissolved, adding a kH550 silane coupling agent, and stirring for 28-34 minutes to obtain the epoxy resin HY01B. The coating prepared by adopting the preparation method disclosed by the invention has the advantages of strong binding force with an antenna tube substrate, excellent elastic property, good oil resistance and wear resistance and strong applicability in a complex environment.

The invention relates to the technical field of epoxy resin-based coating compositions, and discloses an isocyanate and organosilicon composite modified epoxy resin-based closed prime coating, which comprises a component A: composite modified epoxy resin; the component B is a curing agent; the component C is a ceramic filler; and the component A is prepared by mixing isocyanate, an organic silicon monomer and epoxy resin. The closed prime paint disclosed by the invention is beneficial to reducing coating shedding, prolonging the service life of the coating and reducing the frequency of maintenance and replacement.

The invention discloses a water-based pre-coating composition, a polyester optical film and a preparation method and application, and relates to the technical field of optical functional thin films, the water-based pre-coating composition comprises the following components by mass: 5-80 parts of first water dispersible resin; 1 to 80 parts of second water dispersible resin; 1 to 50 parts of water soluble resin; 0.1 to 50 parts of a cross-linking agent; 0-90 parts of a solvent; the water-soluble resin comprises polyvinyl alcohol, and the second water dispersible resin comprises at least one of water-based acrylic resin and water-based polyurethane; according to the water-based pre-coating composition, low-refractive-index water-soluble resin such as water-based acrylic resin and water-based polyurethane resin is added, the refractive index of a pre-coating layer of a polyester optical film is regulated and controlled, and the water-based pre-coating composition serves as a transition layer between a polyester base film and a subsequent functional coating, so that serious rainbow lines are prevented from appearing after coating of a functional surface coating is completed.

The invention provides an inorganic silicon hybrid polyurethane primer as well as a preparation method and application thereof, and belongs to the technical field of primer. The primer provided by the invention is prepared from the following raw materials: polyester polyol, polyether polyol, trimethylolpropane, hexamethylene diisocyanate, 3-(phenylamino) propyltrimethoxysilane, ethyl acetate, xylene, an antioxidant, a light stabilizer, stannous octoate and a catalyst. An isocyanate-terminated polyurethane prepolymer is selected as a base material, a silane hybrid structure is introduced, a Si-O-Si network is formed after silane is hydrolyzed, the Si-O-Si network and Ca < 2 + > in concrete form a coordinate bond, and meanwhile, an isocyanate group reacts with water to generate a urea bond to reinforce anchoring. According to the primer disclosed by the invention, through a chemical-physical synergistic effect, the technical problem of bonding failure of a floating dust hardened layer is systematically solved, and an innovative solution is provided for long-acting sealing of a concrete joint.

To provide a packaging film, a packaging bag, and a packaged product capable of having excellent gas barrier properties while suppressing a decrease in the ratio of polyolefin-based resin in the entire packaging film.SOLUTION: A packaging film includes a gas barrier film, an adhesive layer, and a sealant layer in this order. The gas barrier film includes a base material layer, an anchor coat layer, and a vapor deposition layer in this order. The base material layer includes a polyolefin-based base material layer containing a polyolefin-based resin. The anchor coat layer contains a polyurethane resin and has a thickness of 0.02 μm or more. The adhesive layer is obtained by bonding an adhesive resin composition containing a polyolefin-based adhesive resin to the gas barrier film by melt extrusion. The sealant layer contains a polyolefin-based resin.SELECTED DRAWING: Figure 1

The present invention provides a modified polyolefin resin composition that exhibits excellent water resistance, excellent bending resistance, sufficient fluidity within a specific temperature range, and excellent adhesion to polyolefin substrates. Specifically, the present invention provides a modified polyolefin resin composition containing an acid-modified polyolefin resin (A) and a compound having a polymerizable unsaturated group (B), in which the compound having a polymerizable unsaturated group (B) contains a compound having a polymerizable unsaturated group with an elongation at break of 30% or more (B-1).

The application discloses a kind of water-resistant and electric breakdown-resistant PVC insulating electrician adhesive tape and preparation method thereof, and relates to the technical field of insulating electrician adhesive tape.The water-resistant and electric breakdown-resistant PVC insulating electrician adhesive tape includes PVC film layer and adhesive layer arranged on one surface thereof;The adhesive layer includes primer layer directly contacting the PVC film layer and pressure-sensitive adhesive layer arranged on the other surface of the primer layer.The PVC film layer includes the following raw material components: 50 parts of PVC resin, 10-15 parts of insulating filler, 15-20 parts of toughening agent, 2-4 parts of heat stabilizer, 0.25-0.75 parts of lubricant and 0.5-1.5 parts of antioxidant by weight fraction;The primer layer includes the following raw material components: 50 parts of acrylate monomer, 6-8 parts of unsaturated acid, 2-3 parts of photoinitiator and 0.5-1 part of antioxidant by weight fraction.

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 invention relates to an interlayer separant and application thereof. The interlayer separant is used between a polyurethane coating and an asphalt coiled material and is formed by a polyurethane coating, and the polyurethane coating comprises the following components: maleic anhydride modified polyurethane, silane modified polyurethane, maleic anhydride modified colloid and a solvent; the maleic anhydride modified polyurethane is obtained by reaction of raw materials including polyol, maleic anhydride, isocyanate and a catalyst; the silane modified polyurethane is obtained by reaction of raw materials including polyol, a silane coupling agent, isocyanate and a catalyst; the colloid is selected from one or a combination of more of petroleum resin, asphalt, rosin resin, terpene resin, butadiene-styrene rubber and butyl rubber; the maleic anhydride modified colloid is obtained by reacting raw materials including maleic anhydride, colloid and an initiator. The interlayer separant can isolate migration of auxiliaries such as a plasticizer in a traditional polyurethane coating and improve the compatibility and bonding performance of the traditional polyurethane coating and an asphalt coiled material.

The present invention provides a paint composition that has excellent resistance to high-pressure car washing on polyolefin resin substrates, that exhibits good adhesion to both non-polar substrates, such as polyolefin substrates, and polar substrates, such as polycarbonate substrates and ABS substrates, as well as good water resistance, and that also has good storage stability. Specifically, the present invention provides a paint composition comprising a modified polyolefin (A) and a (meth)acrylic resin (B), the modified polyolefin (A) having a glass transition temperature of -30°C or higher, the (meth)acrylic resin (B) comprising a polymer of a radically polymerizable compound (b1), and the radically polymerizable compound (b1) comprising at least one of (meth)acrylate having an alkoxymethyl group and (meth)acrylate having an alkoxyethyl group, the (meth)acrylic resin (B) having a glass transition temperature of 0°C or higher, and the (meth)acrylic resin (B) having a hydroxyl value of 5 to 150 mgKOH / g.

A composition in the form of a solution or dispersion comprising an anhydride-modified polyolefin, an anhydride-modified styrene block copolymer, and an isocyanate-containing crosslinker, wherein the anhydride-modified polyolefin and the anhydride-modified styrene block copolymer are present in a combined amount of 7 wt% to 18 wt% of the composition, the weight ratio of the anhydride-modified polyolefin to the anhydride-modified styrene block copolymer being in the range of 2:1 to 6:1, the weight ratio of the combined anhydride-modified polyolefin and the anhydride-modified styrene block copolymer to the isocyanate-containing crosslinker being in the range of 0.2:1 to 0.5:1, and the solvent includes a ketone as a first solvent and an alkylbenzene or alkane solvent. The composition can be used for bonding TPO to TPU, polyester, or PU. The composition can be used for bonding a first TPO component or coating to a second TPU, polyester, or PU component by applying heat and, optionally, pressure, and the resulting adhesion improves peel strength.

The application provides a PET sandwich composite wood grain plate and a preparation process thereof, and has a surface micro-crease structure, comprises a primer and a topcoat, and the polymerizable monomers, namely, vinyl benzimidazole and vinyl imidazole, in the topcoat have photosensitive groups, namely, benzimidazole and imidazole, can synergize with a photoinitiator, promote the generation and transmission of free radicals under the action of UV light, increase the free radical concentration, can strengthen the UV energy gradient change from the topcoat to the primer, increase the micro-crease size, promote the diffuse reflection of light on the surface layer, reduce the gloss, and improve the scratch resistance and hardness.

The invention discloses a method for preparing a corrosion-resistant composite film by using an acyl fluoride byproduct, and belongs to the technical field of preparation of corrosion-resistant films on surfaces of steel materials. The method comprises the following steps: by taking a perfluoropropylene oxide (HFPO) acyl fluoride byproduct as a raw material, mixing the raw material with a solvent and an acid-binding agent to prepare a film-forming agent; and double-layer self-assembly of a polyacrylic acid layer and an acyl fluoride by-product film layer is carried out on the surface of the steel by combining a polyacrylic acid mixed solution, and the corrosion-resistant composite film is formed on the surface of the steel after high-temperature curing. According to the invention, the high value of the HFPO byproduct is realized, the dripping time of the copper sulfate of the composite film reaches 298-426 s, and the electrochemical corrosion resistance is excellent; and chromizing and phosphating pollution processes are not needed, the process is simple and convenient, the cost is low, and the method is suitable for steel materials and can be popularized to the field of manufacturing of buildings, automobiles and major equipment.

The present application relates to a kind of EB solidification ecological home cabinet door plate, including the structure of substrate layer, primer layer and topcoat, wherein topcoat is formed after using flame-retardant and reinforcing modifier compound coating by EB electron beam curing, and the composition of reinforcing modifier coating is nanometer silicon powder, alumina powder and boric acid or borax powder;Primer layer is made of water-based fluorinated polyurethane or acrylic emulsion;2-3 layers of primer are coated on substrate layer, and then external topcoat is coated, and after coating, it is cured by EB electron beam in nitrogen environment, to obtain EB solidification ecological home cabinet door plate, and the cabinet door plate produced has the excellent performance of low cost, stain resistance, wear resistance, corrosion resistance, high hardness, impact resistance, yellowing resistance and fingerprint resistance.

Provided are a primer composition that provides a secondary battery exterior material that has excellent electrolyte resistance and does not lose adhesive strength even in a high-temperature environment, a coating film obtained from the primer composition, a secondary battery exterior material including the coating film, and a secondary battery. [Solution] A primer composition comprising: 100 parts by mass of an acid-modified polypropylene resin aqueous dispersion (A); 0.5 to 3.0 parts by mass of a modified polyvinyl alcohol (B) having a carbonyl group; 1.0 to 5.0 parts by mass of adipic acid dihydrazide (C); 5.0 to 10.0 parts by mass of an oxazoline compound (D); and water, wherein the aqueous dispersion (A) has a melting point of 143 to 148°C as measured in accordance with JIS K 7121 in a nitrogen gas flow at a temperature rise rate of 10°C / min, and an acid value of 20 to 30 mgKOH / g as measured in accordance with JIS K 2501; and the modified polyvinyl alcohol (B) has a degree of saponification of 98 to 99 mol% as measured in accordance with JIS K 6726.

The application provides a modified polyurethane primer and a preparation method thereof. The preparation raw material of the modified polyurethane primer comprises 15-25 parts of tackifying resin, 15-25 parts of crosslinking resin, 5-9 parts of pigment carbon black, 0.5-1.0 part of catalyst and 50-60 parts of solvent, the tackifying resin is obtained by the reaction of first polyester diol, diisocyanate and hydroxyl-terminated organic silicon modified rosin-based end-capping agent, the hydroxyl-terminated organic silicon modified rosin-based end-capping agent is obtained by the reaction of epoxy silane and rosin, and the crosslinking resin is obtained by the reaction of triisocyanate, second polyester diol and polyamino silane. The modified polyurethane primer provided by the application has excellent initial adhesion performance under low temperature (about 0 DEG C) conditions, meanwhile, the primer has the characteristics of strong adhesion, excellent storage stability, good durability, wide substrate adaptability and the like, is very suitable for use in cold winter environment, and can obviously shorten the fixture removal time of a main engine factory and the fast driving-off time in the after-sales market.

A water repellent and oil repellent member which has a functional film layer serving as the first layer on at least one surface of a base material, while having a primer layer serving as the second layer on the outer surface of the functional film layer and additionally having a water repellent and oil repellent layer serving as the third layer on the outer surface of the primer layer, wherein: the primer layer is formed of a layer that has a film thickness of 10-500 nm, while being mainly composed of an organosilicon compound which has a plurality of silanol groups in each molecule; and the water repellent and oil repellent layer is formed of a layer that has a film thickness of 0.5-50 nm, while being mainly composed of a cured product of a hydrolyzable fluorine-containing compound. This water repellent and oil repellent member has excellent rubber eraser abrasion resistance, while exhibiting excellent antistatic properties. In addition, the present invention is capable of forming a water repellent and oil repellent layer having excellent rubber eraser abrasion resistance and excellent antistatic properties on various base materials.

The application relates to the field of paint technology and discloses a water-based UV primer for floor and a preparation method thereof. The water-based UV primer is formed by mixing water-based UV polyurethane emulsion as a film-forming material, modified jute fiber, defoaming agent, thickening agent and the like as auxiliary materials. The modified jute fiber is prepared by modifying macromolecular substances with polyether and triallyl ether alternately connected on the surface of jute fiber. The macromolecular substance structure contains a large number of triallyl ether structures. The allyl groups can participate in the subsequent photocuring process of the paint, so that the covalent connection of the jute fiber and the paint molecular chain is realized. Therefore, the jute fiber can exist in the form of a chemical core in the coating layer formed by photocuring of the paint, and the jute fiber can strengthen and toughen the coating layer. Meanwhile, the macromolecular substance structure contains a large number of ether bonds, and the ether bonds can improve the adhesion of the paint film, thereby improving the problem of poor interlayer adhesion.

Provided is a white laminated polyester film that has blocking resistance when water adheres and has excellent adhesion to UV ink. A white laminated polyester film comprising a polyester resin layer and a coating layer on at least one surface of the polyester film substrate, the coating layer being formed by curing a composition containing a urethane resin with a polycarbonate structure and a branched structure, a crosslinking agent, and a polyester resin. The crosslinking agent is preferably a compound containing three or more blocked isocyanate groups.

Provided is a coating composition containing: a hydroxyl group-containing resin (A), a curing agent (B), and cellulose nanocrystal particles (C), where a viscosity (V1) measured under conditions of a temperature of 25°C and a shear rate of 1500 sec-1 is in a range from 10 to 70 mPa·s, and a viscosity (V2) measured under conditions of a temperature of 25°C and a shear rate of 0.1 sec-1 is in a range from 10000 to 50000 mPa·s.

In recent years, the aquaculture industry and the ocean ship industry develop rapidly, the requirements for materials such as ships, underwater equipment, fishponds and fishing gears are higher and higher, and the requirements for the performance of the materials are higher and higher. The aquatic product equipment needs to be soaked in water throughout the year, and the requirements for corrosion resistance and adhesion of materials of the aquatic product equipment are high; and meanwhile, higher requirements on the antifouling and self-cleaning capabilities of the material are also put forward. A mainstream super-amphiphobic material taking organosilane as a coupling agent is strict in construction condition, needs to be carried out at specific temperature and humidity, is relatively high in cost, and is not beneficial to sustainable recovery development due to lack of reprocessing or recovery capability. According to the super-amphiphobic composite material for preparing the primer by using the zirconate as the coupling agent, provided by the invention, the adhesion of a coating, especially metal, can be effectively enhanced, the corrosion resistance is remarkably improved, meanwhile, the cost is reduced, and the economy of fishermen engaged in marine aquatic products and even the aquaculture industry is improved.

The application provides a preparation method of an oil-resistant and wear-resistant coating for an antenna tube surface, and belongs to the technical field of composite coatings.The preparation method comprises the steps of spraying a primer, spraying a polyurea coating and post-treatment.The preparation primer step is mixing epoxy resin HY01A and epoxy resin HY01B to obtain the primer.The preparation method of the epoxy resin HY01A is adding bisphenol A type epoxy resin and propylene oxide butyl ether into a reaction kettle, stirring at 40-50 DEG C to obtain a homogeneous liquid, vacuum degassing to obtain the epoxy resin HY01A.The preparation method of the epoxy resin HY01B is stirring cashew nut shell oil modified amine in a mixed solvent, completely dissolving, adding kH550 silane coupling agent, stirring for 28-34 min to obtain the epoxy resin HY01B.The coating prepared by the preparation method has strong adhesion to the antenna tube substrate, excellent elastic performance, good oil resistance and wear resistance, and strong application in complex environments.

This invention provides an anti-fouling and anti-wear polyurea coating, its preparation method, and its application method, belonging to the field of petroleum drilling and production technology. The coating includes a primer and a topcoat; the topcoat includes component A and component B. Component A includes: isophorone diisocyanate, polyethylene glycol, a dispersion of partially reduced graphene oxide modified with α-Al₂O₃ and YSZ nanopowders, and a mixture of α-Al₂O₃ micro / nano powders and YSZ micro / nano powders; component B includes: a chain extender, terminal amino polyethers, a diluent, a foaming agent, modified nano-molybdenum disulfide, and additives; the primer includes component C and component D. Component C includes: isophorone diisocyanate, polyethylene glycol, a dispersion of partially reduced graphene oxide modified with cerium dioxide nanopowders, a mixture of cerium dioxide micro / nano powders and yttrium oxide-stabilized zirconium oxide micro / nano powders; component D includes: a chain extender, terminal amino polyethers, a diluent, a foaming agent, modified nano-cerium dioxide, and additives.