10216results about "Polyurea/polyurethane coatings" patented technology

The invention relates to the field of electric heating materials, and provides a graphene-based heating coating and a preparation method thereof. The coating is prepared from functionalized graphene, a surface modified bismuth telluride nanobelt, polyaniline, bisphenol A epoxy acrylate, polyurethane acrylate, a dispersing agent, a flatting agent, a silane coupling agent, a defoaming agent and a propylene glycol methyl ether acetate / N-methyl pyrrolidone mixed solvent. The functionalized graphene is obtained by modifying a hyperbranched polyolefin-acryloyl-POSS copolymer, and carrying out ultrasonic stripping, centrifugal separation, gradient washing and vacuum drying; the surface-modified bismuth telluride nanobelt is modified by an amino silane coupling agent, so that the interfacial compatibility is improved. The preparation method comprises the steps of solvent premixing, nanofiller dispersion, ultrasonic homogenization, coupling agent modification, ultraviolet curing and thermocuring. The heating coating provided by the invention has high conductivity, excellent thermal stability and adhesive force, and can be widely applied to heating electric appliances and intelligent temperature control equipment.

The invention belongs to the technical field of composite coatings, and particularly relates to a corrosion-resistant and ultraviolet-resistant protective coating for wind power generation equipment and a preparation method thereof.The corrosion-resistant and ultraviolet-resistant protective coating for the wind power generation equipment is prepared from, by mass, 40-60 parts of gradient fluorosilicone modified polyurethane resin, 5-12 parts of core-shell type ZnO-coated MOFs composite particles, 1-3 parts of a curing agent, 1-3 parts of a curing agent and 1-3 parts of a curing agent. According to the invention, the problems of poor ultraviolet resistance, poor weather resistance, poor corrosion resistance, poor corrosion resistance, poor corrosion resistance, poor corrosion resistance, poor corrosion resistance and the like in the existing coating and the preparation process thereof are well solved; the shielding layer is single and incapable and has a poor self-repairing effect; and the coating toughness of an epoxy resin system is insufficient and cannot adapt to fatigue deformation of equipment under a vibration working condition.

This application relates to an EPP material and a folding mat using this EPP material, which relates to the field of EPP material technology. The EPP material is formed into a plate by welding EPP particles, and the surface of the plate is coated with a hydrophobic antibacterial paint. The raw materials for preparing the EPP particles include 80-100 parts by weight of polypropylene resin, 1-3 parts by weight of a nucleating agent, 6-8 parts by weight of a modified graphene composite material, 5-10 parts by weight of a flame retardant, 5-15 parts by weight of a reinforcing agent, and 0.5-1.5 parts by weight of a surfactant. The raw materials for preparing the modified graphene composite material include hydrophobic modified graphene oxide, hydrophobic antibacterial nano-zinc oxide, and a modified ammonium polyphosphate coupling agent. The folding mat using this EPP material includes an EPP material, a surface layer, and a sewing thread, and the surface layer and the EPP material are fixedly connected by the sewing thread. This application has the effect of improving the flame retardancy, waterproofness, and antibacterial properties of EPP material, and the resulting tatami mat is environmentally friendly, comfortable, and has a good user experience.

The invention relates to a photo-thermal super-hydrophobic multifunctional anti-icing coating as well as a preparation method and application thereof. The photo-thermal super-hydrophobic multifunctional anti-icing coating comprises primer and finish paint, the primer comprises the following raw materials in parts by weight: 20-25 parts of bisphenol A type epoxy resin and / or fluorine modified epoxy resin, 10-20 parts of fluorine modified polyacrylic resin and / or polyurethane resin, 5-10 parts of a curing agent and 40-55 parts of a solvent; the finish paint comprises the following components in parts by weight: 2-5 parts of polytetrafluoroethylene, 1-3 parts of soluble polytetrafluoroethylene, 1-5 parts of polydimethylsiloxane and 85-90 parts of fluorinated MOF dispersion liquid. Compared with the prior art, the photo-thermal super-hydrophobic multifunctional anti-icing coating provided by the invention has the characteristics of super-hydrophobicity, rapid ice melting, wear resistance, reduction of ice adhesion strength and reduction of icing amount, can effectively solve the problem of icing of an aluminum conductor of a power transmission line of a power system, and can be applied to power equipment such as the aluminum conductor of the power transmission line.

The invention relates to the technical field of high polymer materials, and particularly provides a self-repairing type UV curing alumite color layer coating and a preparation method thereof. The water-based ink is prepared from, by weight, 30-50 parts of polyurethane acrylic resin, 10-25 parts of modified acrylic oligomer containing dynamic covalent bonds, 2-5 parts of photoinitiator, 3-8 parts of hydrophobic modified nano filler and 1-3 parts of cross-linking agent, and the dynamic covalent bonds are selected from at least one of hydrazide bonds, boric acid ester bonds and Diels-Alder bonds. By introducing a gradient energy collaborative network of dynamic covalent bonds and quadruple hydrogen bonds, rapid self-repairing of the coating at normal temperature and thermal triggering recombination of deep damage are achieved, and meanwhile through the micro-phase separation design of the hydrophobic core-shell filler and the graft modified silicon carbide nanowires, the hydrolysis resistance is improved.

The invention provides a polyaniline / modified graphene oxide composite material and a preparation method thereof. The preparation method comprises the following steps: dispersing purified graphene oxide, performing ultrasonic treatment, heating, adding a modifier for modification, centrifuging, taking precipitate, freezing, drying and grinding to obtain modified graphene oxide powder; mixing the powder with an aniline solution in doped acid to form a modified graphene oxide / aniline acid solution; dissolving ammonium persulfate in the doped acid to prepare an ammonium persulfate acid solution; and slowly dropwise adding the solution into the solution, carrying out in-situ polymerization, and carrying out suction filtration, washing and drying to obtain the composite material. According to the method, through chemical modification and in-situ polymerization processes, the problems that a single filler is poor in dispersity, a conductive network is discontinuous, and anti-corrosion and anti-static performance is difficult to synergistically improve are solved, and the process is simple and convenient and suitable for industrialization.

Provided are a water-resistant wood-plastic reinforced composite flooring and a manufacturing method therefor. Wood flour is boiled in boiling water for 3-4 hours, filtered and dried, to obtain dried wood flour; polypropylene, butyl acrylate, methyl methacrylate, maleic anhydride and dicumyl peroxide are mixed evenly, extruded and granulated, and dried to obtain a compatibilizer; the dried wood flour and polypropylene are mixed evenly, the compatibilizer is added and mixed evenly, then extrusion and granulation, and injection molded, are performed, to obtain a wood-plastic flooring blank; a composite resin emulsion and a photoinitiator are ultrasonically mixed evenly, and the wood-plastic flooring blank is immersed therein, then taken out and dried at room temperature, and then vacuum dried and UV cured, to obtain water-resistant wood-plastic reinforced composite flooring.

Provided are a nanocomposite polyurethane coating for aviation and a preparation method therefor. The coating is a product obtained by mixing a polyaspartic acid ester resin as a raw material with a fluorine-modified nano-SiO2 containing an active amine group and a fluorocarbon resin and reacting same. The nanocomposite polyurethane coating for aviation solves the problems of poor stain resistance, difficulty in cleaning, and poor toughness of existing aircraft skin coatings, and improves the toughness and ease of cleaning of the coating.

The invention discloses a scratch repair coating and a preparation method thereof, and relates to the technical field of high polymer materials. When the scratch repair coating is prepared, hydroxylated boron nitride reacts with 1-(3-triethoxysilylpropyl)-2-imidazoline to prepare pre-modified boron nitride, and then the pre-modified boron nitride and 4-chloro-1-butene are subjected to quaternization to prepare modified boron nitride; the preparation method comprises the following steps: reacting styryl phosphonic dichloride with 4, 4, 5, 5, 6, 6, 7, 7, 7-nonafluoro-1, 2-heptanediol to prepare a hydroxyl-terminated phosphorus-fluorine-containing polymer; the preparation method comprises the following steps: reacting isophorone diisocyanate with a hydroxyl-terminated phosphorus and fluorine-containing polymer to prepare a polyurethane prepolymer; reacting the polyurethane prepolymer with hydroxyl-terminated coumarin to generate modified polyurethane; and uniformly mixing the modified polyurethane, the modified boron nitride and a photoinitiator to prepare the scratch repair coating. The scratch repairing coating prepared by the invention has good self-repairing performance, flame retardant property, corrosion resistance and mechanical property.

The invention relates to the technical field of metal surface protection, and discloses a corrosion-resistant self-repairing metal fastener and a preparation method thereof.The corrosion-resistant self-repairing metal fastener comprises a zinc alloy matrix, a nanometer passivation layer, a slow-release corrosion-resistant layer and a self-repairing functional layer, and the nanometer passivation layer, the slow-release corrosion-resistant layer and the self-repairing functional layer sequentially wrap the zinc alloy matrix; the zinc alloy matrix consists of Al, Cu, Mg, Ce and Zn; the nano passivation layer adopts zinc phosphate / silane composite sol to construct a Si-O-P covalent bond network, and plasma is combined to graft epoxy groups to enhance the interface bonding strength; the slow-release anti-corrosion layer is used for loading a pH response type benzotriazole derivative through gradient aperture mesoporous silica, so that the dynamic controlled release of a corrosion inhibitor is realized; the self-repairing functional layer adopts a synergistic effect of a mechanical triggering type sulfydryl siloxane microcapsule and a pH triggering type EDTA chelating agent microcapsule to form a physical plugging-chemical passivation dual-mode repairing mechanism. Through four-stage cooperation of matrix modification, interface strengthening, slow-release regulation and control and intelligent repair, the corrosion resistance of the corrosion-resistant self-repairing metal fastener in a complex environment is remarkably enhanced.

The invention relates to the technical field of waterproof coatings, in particular to a polyurethane waterproof coating and a preparation process thereof. The polyurethane waterproof coating is prepared from the following raw materials: toluene diisocynate, polyether polyol, chlorinated paraffin, talcum powder, a latent curing agent, self-repairing microcapsules and temperature-sensitive polymer nanoparticles. According to the self-repairing capsule, hexamethylene diisocyanate serves as a core material, the outer layer of the self-repairing capsule is wrapped with a polyurethane / nano-silicon dioxide hybrid wall material or a urea-formaldehyde resin wall material, and the temperature-sensitive polymer nanoparticles are poly N-isopropylacrylamide. The self-repairing microcapsules and the temperature-sensitive polymer nanoparticles are used, the self-repairing capacity and the capacity of adapting to different environmental conditions of a coating film are improved, when tiny cracks occur in the coating film, the microcapsules are broken to release a repairing agent, the cracks are automatically filled, the integrity of the coating is recovered, and the self-repairing performance of the coating film is improved. And the temperature-sensitive polymer nanoparticles can expand when the temperature rises to further promote the flowing and curing of the repairing agent, so that the service life of the coating film is prolonged, and the maintenance cost is reduced.

The invention discloses a negative pressure pipeline leakage point detection and targeted repair system and method, and the method achieves the confirmation of a pipeline leakage point through a detection end, and achieves the repair of the pipeline leakage point through a repair end. The detection end comprises a distributed optical fiber, an unmanned aerial vehicle and a control platform; through distributed optical fibers laid along a pipeline, pipeline vibration and temperature abnormity are monitored in real time, a leakage area is preliminarily positioned, then infrared scanning is performed on a suspicious area through an unmanned aerial vehicle carrying a high-precision thermal infrared imager, a temperature field distribution diagram is generated and uploaded to a control platform, and the control platform outputs leakage point coordinates through a data fusion algorithm; the repairing end comprises self-repairing gel and a magnetic control robot; the small cracks with the width smaller than 1 mm are externally sprayed with self-repairing gel, and laser curing is conducted after the cracks are sucked in through negative pressure; for large cracks with the width larger than or equal to 1 mm, the magnetic control robot is put into the pipeline, resin is sprayed to the inner wall of the pipeline, and ultraviolet curing is conducted. The system and the method can remarkably improve the maintenance efficiency of the negative pressure pipeline.

The invention discloses an easy-to-apply single-component polyurethane waterproof coating and a preparation method thereof, and belongs to the technical field of waterproof coatings. The easy-to-apply single-component polyurethane waterproof coating disclosed by the invention is prepared from the following raw materials: polyol, a plasticizer, a solid filler, isocyanate, a catalyst and a solvent, the polyol comprises polyether glycol and polyether triol; the plasticizer comprises acetyl tributyl citrate; the catalyst comprises a bismuth neodecanoate catalyst and a dimorpholine diethyl ether catalyst. According to the easy-to-apply single-component polyurethane waterproof coating disclosed by the invention, acetyl tributyl citrate is used for replacing traditional plasticizer chlorinated paraffin, and a bismuth neodecanoate catalyst and a dimorpholine diethyl ether (DMDEE) catalyst are compounded, so that the viscosity of the waterproof coating is effectively reduced, and construction is facilitated; meanwhile, the drying speed of the waterproof coating is increased.

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 invention belongs to antibacterial materials, and particularly relates to antibacterial modified waterborne polyurethane and a preparation method and application thereof.The preparation method of the antibacterial modified waterborne polyurethane comprises the following steps that polyol and diisocyanate are mixed and subjected to a prepolymerization reaction, and a polyurethane prepolymer is obtained; mixing the polyurethane prepolymer and a chain extender, and carrying out chain extension reaction; in the chain extension reaction, adding the graft and carrying out esterification reaction to obtain a first intermediate; mixing the first intermediate with triethylamine and carrying out neutralization reaction to obtain a second intermediate; and emulsifying the second intermediate in deionized water to obtain the antibacterial modified waterborne polyurethane. Compared with the prior art, the antibacterial waterborne polyurethane has the advantages that the problems of poor intermiscibility, low durability and the like in physical addition and the problems of limited binding objects and weak antibacterial effect in covalent binding in the antibacterial waterborne polyurethane in the prior art are solved. According to the scheme, arginine and chitosan are grafted to a molecular chain of waterborne polyurethane, so that the waterborne polyurethane is endowed with a synergistic antibacterial property.

The invention relates to the technical field of polyurethane films, in particular to a long-acting, stable, flexible, impact-resistant and resistance-reducing protective film and a preparation process thereof. According to the invention, the raw materials such as polyethylene glycol, a modified fluorosilicone monomer, isophorone diisocyanate, hydroxyethyl acrylate, an acrylic antifouling monomer, dodecafluoroheptyl methacrylate and the like are added to prepare the anti-drag coating. Mixing a polyurethane thermoplastic elastomer, aminopropyl polydimethylsiloxane, an antioxidant and an ultraviolet light absorber, and carrying out melt extrusion and blow molding to form a film, so as to obtain a flexible impact-resistant base film; and uniformly coating the surface of the flexible anti-impact base film with the anti-drag coating, and carrying out ultraviolet curing to obtain a finished product. The finished product prepared by the invention has good impact resistance, and can effectively reduce frictional resistance, so that the finished product has wide application prospects in the technical field of polyurethane films.

The invention relates to the technical field of PET optical film coatings, in particular to a coating liquid for a PET optical film coating and a preparation method of the coating liquid. The coating liquid for the PET optical film coating is prepared from the following preparation raw materials in parts by mass: 20 to 25 parts of polyurethane acrylic resin, 10 to 15 parts of N-hydroxymethyl acrylamide, 1 to 2 parts of a coupling agent, 4 to 6 parts of a photoinitiator, 8 to 10 parts of modified nano titanium dioxide, 0.2 to 0.3 part of an ultraviolet light absorber and 40 to 47 parts of a reactive diluent. The coating liquid for the PET optical film coating prepared by the invention is excellent in adhesive force, weather resistance, scratch resistance, light transmittance and the like, and has a wide application prospect.

The invention discloses an anti-corrosion coating method for a steel structure, belongs to the technical field of metal anti-corrosion coating, and solves the problems of reduced anti-corrosion effect and short maintenance period caused by incomplete pretreatment, insufficient coating adhesive force and poor complex environment adaptability in the existing anti-corrosion coating process for the steel structure. According to the technical scheme, the method is characterized by comprising the steps that the surface of the steel structure is pretreated through chemical oil removal, sand blasting and acid pickling and phosphating; epoxy zinc-rich primer, epoxy micaceous iron oxide intermediate paint and polyurethane finish paint are sequentially sprayed, and plasma treatment is introduced in the coating of each layer so as to enhance the interface bonding force of the coating; the uniformity and the corrosion resistance of the coating are optimized by regulating and controlling spraying parameters, plasma processing power and a gas ratio; and finally, a gradient heating curing process is adopted, so that the compactness and durability of the coating are ensured. The method is mainly used for long-term anti-corrosion protection of steel structures such as bridges and buildings, and the anti-corrosion performance and the service life in a complex environment can be remarkably improved.

The invention discloses an INS film with excellent comprehensive performance, which comprises a surface protection layer, an upper base material layer, a printing ink layer, a bonding glue layer and a lower base material layer which are sequentially superposed from top to bottom, the surface protection layer is prepared from the following raw materials in parts by weight: 75-135 parts of polyester polyol resin, 30-60 parts of hydroxy acrylic resin, 2-25 parts of an isocyanate curing agent, 2-17 parts of a closed curing agent, 2-25 parts of a chain extender, 0.5-8 parts of a catalyst, 0.5-2 parts of an antioxidant and 0.5-3 parts of an ultraviolet light absorber. According to the surface protection layer of the INS film, the high-temperature condition of a high-temperature plastic uptake procedure of the INS film in preparation of INS parts is well utilized, so that the closed curing agent is effectively excited to perform secondary cross-linking curing reaction. The INS film is good in surface chemical reagent resistance, has the characteristics of high heat stretch rate, high hardness and scratch resistance, has excellent ultraviolet irradiation yellowing resistance, and is particularly suitable for the field of in-mold decoration.

The invention relates to the technical field of skin-touch coatings, in particular to a preparation method of a paint film of an excimer UV skin-touch coating which comprises the following components in percentage by mass: 30%-90% of resin, 5%-40% of monomers, 0.01%-10% of a photoinitiator and 0.01%-10% of an auxiliary agent, the prepared paint film is soft and smooth in surface, low in glossiness, good in wear-resistant effect and good in chemical resistance, the uneven structure formed by the difference of curing of the surface layer and the inner layer of the paint and the effect of microcosmic wrinkles caused by shrinkage of the surface layer achieves the effects that the surface glossiness is low, and the glossiness is lower than 10 degrees when the incident angle is tested to be 60 degrees; and the generated wrinkles are very fine and are naturally generated radians, so that the hand feeling is very smooth, the dynamic friction coefficient of the surface is very low, and the wrinkles on the surface of the coating are caused because the surface curing speed and the bottom curing speed are different, the surface shrinkage is large and the inside shrinkage is small.

The invention relates to the technical field of polyurethane coatings, in particular to a hydrophobic flame-retardant polyurethane coating and a preparation method thereof. The preparation method comprises the following steps: firstly, taking 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide and methallyl alcohol as raw materials, and reacting to obtain hydroxyl grafted phosphaphenanthrene; taking 1, 1, 3, 3-tetramethyldisiloxane and methallyl alcohol as raw materials, and reacting according to a molar ratio of 1: 2 to obtain dihydroxy siloxane; then cyanuric chloride, hydroxyl grafted phosphaphenanthrene and dihydroxyl siloxane react according to the molar ratio of 1: 1: (1.5-1.8), and the dihydroxyl-terminated silicon-containing flame retardant is obtained. The preparation method comprises the following steps: mixing a dihydroxyl-terminated silicon-containing flame retardant with polytetrahydrofuran ether glycol to serve as a soft segment, and reacting with isocyanate to obtain a hydrophobic flame-retardant polyurethane emulsion; mixing the hydrophobic flame-retardant polyurethane emulsion, an anti-aging agent, an ultraviolet light absorber, a defoaming agent, kaolin, nano silicon dioxide and talcum powder to obtain the hydrophobic flame-retardant polyurethane coating.

The invention provides a wear early-warning intelligent material based on conductive core-shell micro-nano particles and a preparation method of the wear early-warning intelligent material, and belongs to the technical field of sensing materials. Conductive core-shell micro-nano particles are used as basic sensing function units to be doped into a polymer matrix to form a sensing layer, a three-layer structure material of a bottom residual life layer, a middle sensing layer and a surface self-lubricating wear-resistant layer is designed, and the material is prepared on a metal auxiliary surface. The surface self-lubricating wear-resistant layer is consumed in the wear process, so that the wear reaches the middle sensing layer, and the resistance of the middle sensing layer is obviously changed due to the damage of the conductive micro-nano particles as an early warning signal, so that the early warning information that the surface self-lubricating wear-resistant layer is worn out and friction pair parts need to be replaced in time is realized.

To provide polycarbonate diol which, in the case where polycarbonate diol is used as a polyurethane raw material containing a structural unit derived from straight-chain aliphatic diol having a carbon number 2 to 20 such as 1,6-hexanediol, has excellent mechanical characteristics of obtained polyurethane, suppressed variation of the mechanical characteristics from the viewpoint of quality uniformity, and furthermore excellently maintained chemical resistance.SOLUTION: Polycarbonate diol contains a structural unit (1) expressed by the following general formula (I) and a structural unit (2) expressed by general formula (II). -R-O-C(=O)-O- (I) (in general formula (I), R denotes a hydrocarbon group with a carbon number 2 to 20 which may have substituent or hetero atom.) -(CH2)m-N(R2)-C(=O)-O- (II) (in general formula (II), m is an integer of 2 to 20. R2 denotes an alkyl group or hydrogen atom with a carbon number 1 to 20 which may have substituent.)SELECTED DRAWING: None

The invention discloses a low-temperature-resistant, acid-resistant and alkali-resistant roof waterproof coating and a preparation method thereof. The coating is prepared from various raw materials such as acrylate-organosilicone copolymer emulsion and polyurethane modified acrylate resin, and a key raw material is prepared through free radical polymerization and addition polymerization reaction. The preparation method comprises the steps of pre-dispersion, auxiliary agent dispersion, pigment and filler dispersion, emulsion and functional auxiliary agent compounding, performance regulation and control and the like. The acrylate-organic silicon copolymer emulsion and the polyurethane modified acrylate resin form an interpenetrating network through physical blending and chemical crosslinking, and the low-temperature toughness of a flexible phase and the chemical resistance of a rigid phase are both achieved. In a low-temperature environment, the rigidity embrittlement of the polyurethane resin is counteracted by the flexibility of the organosilicone chain segment, so that the cracking of the coating is avoided; in an acid-base environment, a urethane bond of polyurethane and a silicon-oxygen bond of organic silicon cooperate to resist chemical erosion, molecular chain breakage is reduced, and the problem that an existing waterproof coating is insufficient in performance in the low-temperature and acid-base environment is effectively solved.

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 food-grade high-temperature-resistant coating and a preparation method thereof. The high-temperature-resistant coating is prepared from 60-75% of matrix resin, 18-28% of surface hydrophobic modified nano functional filler and 10-20% of auxiliaries, and the nano functional filler is prepared from 10-15% of nano silicon dioxide, 5-8% of nano aluminum oxide and 3-5% of nano titanium dioxide. According to the food-grade high-temperature-resistant coating and the preparation method thereof, surface hydrophobic modification is carried out on nano particles through a silane coupling agent, the compatibility and dispersion stability of the nano particles in a resin matrix are remarkably improved, coating defects caused by agglomeration at high temperature are avoided, a hydrophobic barrier is formed by the modified nano filler, the moisture permeability is reduced, and the high-temperature-resistant performance of the food-grade high-temperature-resistant coating is improved. And the damp-heat aging resistance of the coating is enhanced.

Provided is a laminate layered body capable of forming a laminate layered body configured from a type of resin that exerts a small environmental load, the laminate layered body being provided with gas barrier properties required for a packaging material and being capable of performing seal processing by heat seal processing in a short time.　This laminate layered body is composed of a gas barrier layered film and a sealant film, wherein the laminate layered body is characterized in that: the gas barrier layered film is provided with a stretched polypropylene resin substrate and a gas barrier layer comprising a thin inorganic film; and the laminate layered body has a seal strength of 20 N / 15 mm or greater when heat-sealed for 0.5 seconds at a temperature of 170°C, and has an oxygen permeability of 10 mL / m2·day·MPa or lower after retort treatment for 30 minutes at 120°C.

The invention discloses an MXene-based coating with a near-infrared light induction interaction effect and a preparation method of the MXene-based coating, and relates to the technical field of coatings. The preparation method comprises the following steps: a nano microcapsule and MXene powder are subjected to in-situ growth to form a composite dispersion liquid, the nano microcapsule is of a core-shell structure, a shell layer material is selected from at least one of polyaniline, polyurea, polyurethane, polyacrylate and silicon dioxide, a core contains a functional substance, and the surface of the core contains a porous material. The functional substances are selected from at least two of a corrosion inhibitor, a fluorescent indicator and a lubricant; adding a thermal reversible coating containing dynamic covalent bonds and a curing agent into the composite dispersion liquid, and uniformly mixing to form a homogeneous coating; and spraying the homogeneous coating on the surface of a base material, and curing to obtain the coating. The coating is high in mechanical strength, has a near-infrared light triggered self-repairing function, is high in self-repairing rate, and can realize multiple functions such as fluorescence labeling, corrosion early warning and lubrication coordinated regulation and control.

The invention discloses a thermally-induced reversible color-changing temperature control coating based on hair structure microcapsules and a preparation method of the thermally-induced reversible color-changing temperature control coating. The thermochromic reversible temperature control coating is a double-layer structure temperature control coating composed of a high-reflection thermal insulation layer and a high-thermal-conductivity thermochromic layer, wherein the high-thermal-conductivity thermochromic layer is prepared by taking thermochromic reversible microcapsules with hair structures on the surfaces and nano silicon dioxide as composite fillers. On one hand, the hair fiber microcapsules have stronger dispersing performance, the microcapsule agglomeration phenomenon in the dispersing process is effectively avoided, and on the other hand, nano silicon dioxide particles are added in the surface fiber modification process and can be distributed among hairs of different particles, so that the heat conduction among the microcapsules can be effectively improved, and the heat conduction efficiency is improved. Therefore, the temperature change of the surface reversible color-changing layer is faster and more uniform, and the color-changing uniformity of the system is greatly improved. The coating is excellent in performance and has important significance on related technical progress and industrial development.

The invention relates to the technical field of optical protective materials, in particular to an anti-dazzle full-ultraviolet-proof optical protective material and a preparation method thereof.The anti-dazzle full-ultraviolet-proof optical protective material is formed by sequentially compounding a scratch-resistant hardened layer, a PET film layer a, a composite adhesive layer, a PET film layer b, an installation adhesive layer and a PET release film layer from top to bottom; the preparation method comprises the following steps: mixing organic silicon modified polyurethane acrylate, a pigment, a reactive diluent, a flatting agent, a photoinitiator, a solvent and modified nano silicon dioxide to prepare a photocurable scratch-resistant hardening coating liquid; in order to endow the optical material with excellent infrared barrier property and heat insulation property, cesium tungsten bronze is introduced into a composite adhesive layer as a filler, and in order to improve the adhesive power and water resistance of a composite adhesive solution, epoxy resin is taken as a base material, organic silicon modified polyurethane acrylate is introduced as a water-resistant component, acrylic acid is taken as tackifying resin, and a curing agent is taken as a curing agent. And bisphenol A ethoxylate dimethacrylate is used as a diluent.