74 results about "Butyl acetate" patented technology

This invention belongs to the field of coating technology, specifically relating to a moisture-proof and stain-resistant acrylic resin coating and its preparation process. The moisture-proof and stain-resistant acrylic resin coating comprises 100 parts by weight of a main agent and 20-25 parts by weight of a curing agent. The main agent comprises the following raw materials in weight percentages: dispersant 1.5-3%, butyl acetate 10-15%, xylene 5-10%, filler 10-20%, titanium dioxide 10-20%, carbon black 1-5%, cellulose acetate butyrate 1-2%, anti-settling agent 1-1.5%, leveling agent 0.5-1%, defoamer 0.1-0.5%, with the balance being acrylic resin. The moisture-proof and stain-resistant acrylic resin coating of this invention exhibits excellent comprehensive performance, high filling and sealing properties, strong adhesion to alloys, and good stain resistance, water resistance, and gloss retention.

The invention discloses a self-cleaning daytime radiation cooling coating and a preparation method thereof, and relates to the field of building exterior wall energy-saving coatings. The preparation method comprises the following steps: uniformly dispersing a first filler and a second filler in a butyl acetate solvent, sequentially adding a silane coupling agent and a third filler, uniformly dispersing, finally adding fluorocarbon resin and a curing system thereof, and dihydroxyl-terminated polydimethylsiloxane and a curing system thereof, and uniformly dispersing to obtain the self-cleaning daytime radiation cooling coating. The self-cleaning daytime radiation cooling coating prepared by the invention is high in hardness and strong in adhesive force, and also has a super-hydrophobic self-cleaning function and an optical property of realizing daytime radiation cooling. The coating is simple in preparation process, low in equipment requirement and suitable for large-scale production.

The invention discloses a waste offset printing ink recovery treatment method and application, and belongs to the technical field of printing ink, the recovery treatment method comprises the following steps: mixing and stirring waste offset printing ink and n-hexane through pretreatment, and removing solid-phase slag through centrifugal separation to obtain a liquid phase; concentrating the liquid phase, recovering the solvent and reserving concentrated slurry; secondly, directionally dissolving the low-molecular resin and the high-molecular resin by butyl acetate and ethylene glycol diacetate respectively through two-stage counter-current extraction and centrifugal separation to obtain a low-molecular resin solution, a high-molecular resin solution and pure pigment slurry; mixing the two resin solutions, recovering the solvent through multi-tower rectification, and refining through short-path molecular distillation to obtain regenerated resin; and finally, performing ultrasonic purification, modification and spray drying on the pigment slurry to obtain the regenerated pigment. According to the waste offset printing ink recycling treatment method and application, an efficient and reliable solution is provided for recycling of waste offset printing ink.

The invention belongs to the technical field of power transmission, and provides an anti-icing aluminum cable steel reinforced and a preparation method thereof.The preparation method comprises the steps that an ethylene glycol solution and mesoporous silica are mixed, and modified silica is obtained; mixing fluorinated polyurethane, butyl acetate and the modified silicon dioxide solution to obtain a composite coating; and coating the composite coating on the surface of the steel-cored aluminum stranded wire, and curing to obtain the anti-icing steel-cored aluminum stranded wire. After coating, the resin is cured to form a continuous three-dimensional network, and the modified silicon dioxide is fixed on the surface of the coating, so that a micro-nano coarse structure is constructed, and a rapid water guide effect is realized; fluorocarbon chains in the fluorine-containing coupling agent form a low-surface-energy molecular layer, so that the purpose of hydrophobic chemical modification is achieved; ethylene glycol in silicon dioxide can be actively released from the pore channels, the freezing point is reduced, and the long-acting anti-icing target is achieved. The anti-icing effect of the steel-cored aluminum strand is achieved through a triple mechanism of micro-nano structure water diversion, low-surface-energy molecular layer hydrophobicity and modified silicon dioxide freezing point reduction.

The invention provides a method for preparing oxacillin sodium by using a microchannel reactor. The oxacillin sodium is prepared by adopting micro-channel reactors, firstly, a 6-APA dissolved clear solution, liquid-state oxacillin acyl chloride, a sodium hydroxide solution and a sulfuric acid solution are prepared in advance, the 6-APA dissolved clear solution and molten-state oxacillin acyl chloride are oppositely added in the first micro-channel reactor, fine liquid drops are formed through atomization and collide with each other to be fully reacted, and then the oxacillin sodium is prepared. The collided and mixed liquid flows through a second micro-channel reactor and then enters a four-opening bottle, butyl acetate is added after the liquid reacts in the four-opening bottle for a period of time, acidification and phase splitting are conducted, a sodium acetate solution is fed into the four-opening bottle, crystallization, filtering, washing and drying are conducted, and a finished oxacillin sodium product is obtained. According to the method for preparing the oxacillin sodium by using the microchannel reactor, the molar yield of the oxacillin sodium prepared by using the method is relatively high, the time of an acylation reaction stage is greatly shortened, and the total impurities of the oxacillin sodium are effectively reduced.

The application discloses a modified organosilicon defoaming agent and a preparation method thereof, and relates to the technical field of defoaming. The modified organosilicon defoaming agent and the preparation method thereof comprise the following components by mass ratio: 89.57 g of liquid mercaptan silicone oil, 20.30 g of triethylamine, 89.57 g of dimethyl sulfoxide, 3.45 g of a methyl-terminated allyl polyoxyethylene ether, 13.80 g of a methyl-terminated allyl polyoxypropylene ether, 0.34 g of azobisdimethyl isobutyronitrile, 32.25 g of butyl acetate, 19.29 g of 2-bromoisobutyrate methyl ester, a magnesium sulfate and sodium chloride aqueous solution, a coupling agent and a thickening agent. The modified organosilicon defoaming agent has good defoaming performance and bubble inhibiting performance, has strong compatibility with different emulsions, and has defoaming performance and bubble inhibiting performance equivalent to polyether defoaming agents in a water-based resin system.

The application discloses a kind of anti-icing super-hydrophobic material preparation methods, with aluminum plate as substrate;First, blast furnace slag powder and steel slag powder are treated with hydrophobic modification, blast furnace slag powder and steel slag powder are mixed according to certain mass ratio, mixed powder and organic solvent A absolute ethyl alcohol are stirred in round bottom flask, after solution is fully mixed, organic solvent B seventeen fluorine decyl triethoxysilane is added and transferred to water bath heating tank water bath heating and stirring;Modified blast furnace slag-steel slag powder, organic solvent C butyl acetate are uniformly mixed according to 3:8 ratio, after reaction ten minutes, two-component polyurea is added drop by drop, and super-hydrophobic coating is obtained by drying.The present application uses blast furnace slag waste as main raw material, adds a small amount of steel slag to improve the wear resistance of coating, uses two-component polyurea as adhesive, uses modified-spraying two-step method, without large instrument equipment, and super-hydrophobic coating with excellent wear resistance is prepared simply and quickly.

The application discloses a PBT car lamp electroplating primer with anti-color fading performance and a preparation method and application thereof. The components of the primer include 20-30 parts of a cyclic structure polyol modified difunctional polyurethane acrylate resin, 8-15 parts of a ten-functional polyurethane acrylate resin, 5-10 parts of a phenolic aldehyde epoxy acrylate resin, 2-6 parts of a difunctional polycarbonate polyurethane acrylate resin, 3-6 parts of pentaerythritol triacrylate, 5-10 parts of trimethylolpropane triacrylate, 2-3 parts of 184, 0.5-1 part of 819, 0.5-1 part of TPO, 0.1-0.2 part of an organic silicon leveling agent and 23-35 parts of an organic solvent. During preparation, the resin components are first mixed and dispersed at high speed to obtain a mixed resin, then 184, 819 and TPO and the leveling agent are dissolved in part of butyl acetate and stirred, ethyl acetate, ethylene glycol monobutyl ether and the remaining butyl acetate are added, and after dispersion, the primer is filtered to obtain the primer. The primer solves the problems of deep curing, adhesion and leveling of the PBT car lamp primer by accurately matching 184, 819 and TPO, selecting a cyclic structure modified polyurethane acrylate resin and gradient volatile solvents.

The application belongs to the field of paint, and particularly discloses PU white primer, a preparation method and application thereof. The PU white primer comprises A component, B component and C component. The A component comprises hydroxyl acrylic acid resin, castor oil, dispersing agent, defoaming agent, cyclohexanone, silicon dioxide, titanium white powder, talcum powder, calcium carbonate, butyl acetate, leveling agent, organic tin and propylene glycol methyl ether acetate. The B component comprises butyl acetate, HDI trimer and isocyanate prepolymer. The C component comprises dimethylbenzene, butyl acetate, propylene glycol methyl ether acetate and dimethyl carbonate. The PU white primer has the advantages of water resistance, high temperature resistance, adhesion, adhesion, hiding power and strong flexibility, and has superior comprehensive performance, is green and safe, low in cost, and is very suitable for being used as wood and stone surface primer in kitchens, bathrooms and the like.

The application discloses a method for preparing a super-hydrophilic porous membrane by grafting SiO2 on a polyurethane fiber membrane, and comprises the following steps: preparing a N,N-dimethylformamide / butyl acetate DMF / BuAc solution of polyurethane PU to obtain PU spinning solution; the PU spinning solution is used to prepare a micron porous membrane through an electrostatic spinning device; the porous membrane is placed in a plasma treatment device, a radio frequency source is turned on, and radio frequency power and time are set; a higher chemical activity plasma is used to activate the surface of the porous membrane fiber to form grafted active groups; the surface-activated porous membrane is placed in a mixed solution of ethanol and amino silane for ultrasonic treatment; the porous membrane treated by the amino silane is placed in a mixed solution of ethanol, water and tetraethyl orthosilicate for ultrasonic treatment to obtain a super-hydrophilic porous membrane. The super-hydrophilic porous membrane prepared by the method has excellent comprehensive properties such as moisture absorption, quick drying, oil-repellence under water and oil stain resistance.

The application provides a self-repairing scratch-resistant coating, a PVC decorative film and a preparation method thereof, and relates to the technical field of decorative films.The self-repairing scratch-resistant coating provided by the application comprises flexible polyurethane acrylate, modified epoxy acrylate, active diluent, photoinitiator, silicone microcapsule repair agent, dynamic crosslinking agent, leveling agent, anti-fingerprint agent and butyl acetate; through the dual self-repairing mechanism of chemical repair of dynamic chemical bonds and physical repair of microcapsules, efficient repair of the coating can be realized; meanwhile, the flexible polyurethane acrylate can improve the toughness of the coating, avoid secondary damage after repair, and achieve the purpose of synergistic scratch resistance and self-repairing.The PVC decorative film provided by the application adopts the self-repairing scratch-resistant coating, so that the surface hardness is improved, the scratch resistance is enhanced, and the scratch self-repairing technology is added, so that the scratch is reversible and the service life is prolonged.

The invention relates to a polyurethane adhesive and a preparation method and application thereof. The adhesive is composed of the following raw materials in percentage by weight: 35-65wt% of a composite polyether polyol, 14-25wt% of a polyisocyanate, 1-5wt% of a hydrophilic chain extender, 1-5wt% of a small molecule chain extender, 0.05-3wt% of a catalyst, 0.5-4wt% of a neutralizer, 1-7wt% of a capping agent, 1-8wt% of a silane coupling agent, 2-12wt% of mesoporous microspheres, 2-5% of isopropyl alcohol, 2-5wt% of butyl acetate and 0.2-4wt% of a defoamer, with the balance being water. The composite polyether polyol is a composition of a Mannich polyether polyol and a soft foam polyether polyol in a mass ratio of 1:(0.5-1). The adhesive can replace hot melt adhesive powder in clothing heat transfer printing, can improve the softness, air permeability, friction resistance and soaping color fastness of fabric heat transfer printing, and can significantly reduce the film-forming and curing temperature of the adhesive.

The invention provides an anti-icing nano modification material and application thereof to an anti-icing wire, and belongs to the technical field of preparation of anti-icing wires. The invention relates to a preparation method of an anti-icing nano modification material, which comprises the following steps: respectively preparing super-hydrophobic nano SiO2 powder and super-hydrophobic porous diatomite powder, mixing the super-hydrophobic nano SiO2 powder and the super-hydrophobic porous diatomite powder in absolute ethyl alcohol, washing, and drying to obtain nano SiO2 / diatomite composite super-hydrophobic powder; carrying out mechanical blending on the nano SiO2 / diatomite composite super-hydrophobic powder and a nano whisker filler with a high length-diameter ratio to obtain a composite super-hydrophobic blend; and mixing the composite super-hydrophobic blending material with perfluorinated modified polyurethane resin and butyl acetate, and uniformly stirring to obtain the anti-icing nano modification material. The anti-icing nano modification material provided by the invention has excellent anti-icing performance, excellent wear resistance and long-term durability, and is particularly suitable for preparing anti-icing wires.

The invention discloses a protective coating for the surface of a stainless steel structure and a preparation method of the protective coating, and relates to the technical field of coatings. The protective coating comprises a bottom layer, a surface layer and a porous ceramic particle layer arranged between the bottom layer and the surface layer. Wherein the bottom layer is prepared from a bottom layer coating, and the bottom layer coating is prepared from the following raw materials: epoxy resin E-51, butyl glycidyl ether, benzyl glycidyl ether, butyl acetate, a eutectic solvent and a curing agent dispersion liquid; the surface layer is prepared from a surface layer coating, and the surface layer coating is prepared from the following raw materials: butyl acetate, xylene, epoxy resin E-51, a dispersing agent, phenyl organic silicon resin dispersion liquid, a silane coupling agent KH-560, a eutectic solvent, micron silicon carbide, porous ceramic particles, modified composite particles, fumed silica and curing agent dispersion liquid. Due to the introduction of the eutectic solvent, the porous ceramic particles, the modified composite particles and other components, the adhesive force, the water resistance, the aging resistance and the durability are effectively improved.

The application provides a UV coating and a preparation method and application thereof.The UV coating of the application is prepared from raw materials including ultraviolet light curing resin, active monomer, thermoplastic acrylic resin, photoinitiator, adhesion promoter, base material wetting agent, ethyl acetate, butyl acetate, fumed silica, polyamide wax anti-settling slurry, pigment and flatting powder.The UV coating of the application reduces the influence of pigment light absorption on UV curing by increasing UV light intensity, and realizes appropriate color addition of the coating.The application increases the color addition ratio by increasing light intensity, and the color addition and hiding property are superior to those of the prior art.The application also provides a preparation method and application of the UV coating.

The embodiment of the invention provides a dual-size nanoparticle / polymer composite wear-resistant super-hydrophobic anti-icing coating and a preparation method thereof. The two-component fluorocarbon resin FEVE can be used as an adhesive to enhance the fastness and wear resistance of the coating. And the coating has certain water pressure resistance due to the adoption of the elastomer organic silicon resin SI. FEVE and SI are dissolved in a butyl acetate solution, double-size hydrophobic silicon dioxide nanoparticles are used as a nanostructure unit to provide a multi-stage coarse structure, and the ultra-low surface energy characteristic of 1H, 1H, 2H, 2H-perfluorodecyl triethoxysilane PFDTES is combined, so that the surface of the coating has excellent super-hydrophobicity. The FEVE / SI / SiO2 / PFDTES super-hydrophobic anti-icing coating with mechanical wear resistance is prepared by spraying a blending solution of silicon dioxide nanoparticles, a low-surface-energy substance fluorocarbon resin / organic silicon resin and PFDTES. The coating prepared by the invention has excellent super-hydrophobic anti-icing performance, and also has weather resistance, wear resistance and chemical stability resistance.

The invention belongs to the field of paint, and particularly relates to PU electrostatic spraying high-wear-resistance white matt finish paint and a preparation method thereof.The PU electrostatic spraying high-wear-resistance white matt finish paint is prepared from a component A, a component B and a component C. The component A is prepared from odorless matting resin, a wetting agent, a defoaming agent, matting powder, superfine ceramic powder, an organic silicon flatting agent, an anti-settling agent, conductive titanium dioxide slurry and xylene; the component B comprises a bright tripolymer, a matte tripolymer, an HDI (hexamethylene diisocyanate) tripolymer and butyl acetate; the component C comprises trimethylbenzene, cyclohexanone, a DBE high-boiling-point solvent, butyl acetate and an alcoholic solution of an amine salt compound; the conductive titanium dioxide slurry comprises odor-free matting resin, conductive titanium dioxide, a wetting agent and xylene. By means of the superfine ceramic powder, excellent hardness, wear resistance and certain whiteness can be provided for the coating, and the chemical stability of the coating is improved. The conductive titanium dioxide slurry can achieve the electrostatic surrounding effect, and multiple surfaces of a workpiece can be evenly oiled at the same time during electrostatic spraying.

The invention provides a special PU (polyurethane) real wood paint for automotive interiors and a preparation method thereof, and belongs to the technical field of automotive interiors, the special PU real wood paint comprises a main agent, a curing agent and a diluent; the main agent is prepared from the following components in percentage by weight: 15 to 30 percent of acrylic polyol resin, 10 to 20 percent of low-hydroxyl acrylic resin, 0.5 to 1 percent of macromolecular dispersing agent, 0.1 to 0.3 percent of polyacrylate defoaming agent, 1 to 2 percent of polyethylene wax powder, 4.5 to 5.5 percent of butyl acetate, 4 to 7 percent of matt powder, 0.3 to 0.5 percent of polyether modified polymethylsiloxane flatting agent, 0.2 to 0.4 percent of drier, 1 to 2 percent of ultraviolet light absorber, 15 to 20 percent of cellulose acetate butyrate solution and the balance of ethyl acetate; the sum of the mass percentages of all the components in the main agent is 100%. The invention provides special PU (polyurethane) real wood paint for automotive trim and a preparation method of the special PU real wood paint. The purpose of improving weather resistance, touch feeling and durability of automotive trim paint is achieved.

The invention discloses crab-flavor essence and a preparation method thereof. The crab-flavor essence is prepared from the following raw materials in parts by mass: 8 to 12 parts of butyl acetate, 5 to 9 parts of dimethyl disulfide, 4 to 7 parts of 2-acetylthiazole, 2 to 5 parts of pyridine, 6 to 10 parts of furfural, 3 to 8 parts of 2-amyl furan, 7 to 11 parts of alcohol compounds, 9 to 14 parts of ketone compounds, 6 to 11 parts of aldehyde compounds and 8 to 13 parts of pyrazine compounds. According to the crab-flavor essence, the alcohol compound, the ketone compound, the aldehyde compound and the pyrazine compound are added into the butyl acetate, the dimethyl disulfide, the 2-acetylthiazole, the pyridine, the furfural and the 2-amylfuran, and the crab-flavor essence which is rich in crab meat fragrance, high in fresh and sweet taste and high in crab meat flavor fidelity is prepared.

The invention belongs to the technical field of resin coating preparation, and particularly relates to a preparation method of an antibacterial alkyd resin coating. Comprising the following steps: alcoholysis reaction: putting soybean oil, glycerol, phthalic anhydride, butyl acetate and deionized water into a reaction kettle according to a ratio, adding a catalyst, and heating to react until the alcoholysis end point is reached; esterification reaction: reducing the reaction temperature, and adding phthalic anhydride and a reflux solvent xylene; raising the temperature to carry out condensation polymerization until an esterification end point is reached; diluting and filtering: adding a prepared solvent into the reaction kettle for diluting, adjusting the viscosity, filtering and discharging for later use; the prepared nano-silver solution is slowly added into resin, then 0.5%-1% of a silane coupling agent is added, and mechanical stirring is conducted; transferring the prepared pigment grinding slurry to a paint mixing tank, and adjusting to construction viscosity by using a solvent; compared with an additive antibacterial agent, the antibacterial resin coating prepared by the invention has more stable and lasting antibacterial time and can achieve the same antibacterial effect.

A car bumper structure, used for mounting at the front and rear ends of a vehicle body and in conjunction with light strips on the vehicle body surface, includes a transparent PP bumper body. The surface of the transparent PP bumper body is sequentially stacked with a transparent primer layer, a laser-engraved layer, a translucent colored paint layer, and a protective paint film layer. The laser-engraved layer has a laser-engraved pattern. The transparent primer layer is composed of the following components by weight percentage: 20-30% chlorinated polyolefin resin, 1-2% polyester phosphate adhesion promoter, 1-3% acrylic modified resin, 25-30% butyl acetate, 25-30% xylene, 13-18% cyclohexanone, and 0.1-0.4% modified polymer leveling agent. A method for processing the above-mentioned car bumper structure is also disclosed.

The application discloses a protective coating for a stainless steel structure surface and a preparation method thereof, and relates to the technical field of coating.The protective coating comprises a bottom layer, a surface layer and a porous ceramic particle layer arranged between the bottom layer and the surface layer.The bottom layer is made of a bottom layer coating, and the bottom layer coating comprises the following raw materials: epoxy resin E-51, butyl glycidyl ether, benzyl glycidyl ether, butyl acetate, a eutectic solvent and a curing agent dispersion liquid;the surface layer is made of a surface layer coating, and the surface layer coating comprises the following raw materials: butyl acetate, dimethylbenzene, epoxy resin E-51, a dispersant, a phenyl silicone resin dispersion liquid, silane coupling agent KH-560, a eutectic solvent, micron silicon carbide, porous ceramic particles, modified composite particles, fumed silica and a curing agent dispersion liquid.The introduction of the eutectic solvent, the porous ceramic particles and the modified composite particles and other components effectively improves the adhesion, water resistance, aging resistance and durability.

The present application relates to the technical field of metal corrosion and surface treatment, and particularly relates to a cold-patching composite material for pipeline online repair and reinforcement and a use method, the composite material is composed of cold-plated aluminum coating and glass fiber cloth, the cold-plated aluminum coating is composed of the following components in percentage by mass: 25-45% of composite aromatic polyisocyanate polymer, 15-25% of composite n-butyl acetate polymer, 20-30% of aluminum powder, 5-20% of thinning agent, and the rest is synthetic resin; during preparation of the composite material, one or more than three of spraying, brushing, and rolling can be used. The present application can be used for thickening forming of the metal surface of pipeline, component and other engineering equipment, and can also be used for updating and reducing the metal plate thinning of old equipment, so as to realize thickening of the metal plate thickness of the equipment. The formula is simple, the cost of each component is low, the preparation process of the composite material is simple and operable, and the composite material has the characteristics of high bonding force, pressure resistance and corrosion resistance.

The invention discloses a novel method for extracting tylosin fermentation liquor. The method comprises the following steps: step 1, pH regulation pretreatment of the tylosin fermentation liquor; step 2, performing tubular ultrafiltration membrane filtration on the pretreated fermentation liquor; and step 3, introducing the filtrate obtained in the step 2 into an extraction separator for extraction. The tubular ultrafiltration membrane with the molecular weight cut-off of 10000 is used for replacing traditional plate frame filtration, impurities such as macromolecular protein and pigment are cut off by means of the selective separation characteristic of the membrane, and the quality of filtrate is greatly improved. High-purity filtrate is combined with butyl acetate counter-current extraction, efficient separation is achieved by means of solubility difference, the emulsification phenomenon is remarkably reduced, and the extraction yield stably exceeds 93%. The phase inversion liquid is concentrated by a nanofiltration membrane, the titer is accurately controlled to be more than 200,000 U / mL, compared with the traditional evaporation concentration, the high-temperature degradation of the tylosin is reduced, the energy consumption is reduced, and the concentration yield is more than 99%.

The invention discloses a thin-layer identification method of a smoked plum charcoal related sample, which comprises the following steps: preparing a test sample solution of the smoked plum charcoal related sample and a smoked plum reference medicinal material solution, spotting the test sample solution and the smoked plum reference medicinal material solution on the same thin-layer plate, developing by using a butyl acetate-formic acid-water mixed solution as a developing solvent, inspecting under an ultraviolet lamp, a thin-layer chromatogram is obtained, and identification operation is completed. The method is simple, convenient and rapid, is suitable for various smoked plum charcoal related samples, and is also suitable for smoked plum related samples; after expansion, a multi-information dark plum charcoal related sample thin-layer chromatogram can be obtained, spots are clear, the separation degree is good, and dark plum charcoal related samples and common counterfeit products thereof can be well distinguished. Meanwhile, compared with a pharmacopoeia method, the method has the advantages that the steps are simpler and more convenient, the identification efficiency can be effectively improved, and the method is more suitable for identifying the smoked plum charcoal-related water extract preparation.

This invention relates to the field of coating technology, specifically to an outdoor anti-aging acrylic resin coating and its preparation method. The coating comprises a grafted modified hydroxyl acrylic resin component, butyl acetate, propylene glycol methyl ether acetate, and an aliphatic hexamethylene diisocyanate trimer curing agent. The grafted modified hydroxyl acrylic resin component is prepared by introducing suspended methacrylate double bonds into hydroxyl acrylic resin via 2-isocyanoethyl methacrylate, followed by segmental grafting of hindered amine methacrylate monomers, benzotriazole methacrylate monomers, and methacryloyloxysilane-treated fumed silica. This coating can reduce the migration of light-stabilizing components and the aggregation of nanofillers, improving the gloss retention, color difference stability, chalking grade, haze stability, and flexibility retention of the coating film after outdoor aging. It is suitable for surface protection of wood, rigid PVC profiles, and flexible PVC decorative films.

The invention provides electrosilvering stoving varnish and a production process thereof, and relates to the field of paints, the electrosilvering stoving varnish comprises the following raw materials by weight: 65-67 parts of modified organic silicon resin, 1-3 parts of CAB, 1.7-1.9 parts of amino resin, 6-8 parts of electrosilvering silver powder, 12-17 parts of butyl acetate, 0.1-0.3 part of a leveling agent, 2-4 parts of an adhesion promoter, 3-5 parts of PMA, and 0.5-1.5 parts of cyclohexanone; by means of the unique formula design, the electrosilvering baking varnish achieves perfect balance of weather resistance, temperature resistance and salt spray resistance, meanwhile has excellent solvent resistance, can still keep a lasting and beautiful appearance effect under the condition that a traditional glazing process is omitted, and is suitable for large-scale popularization and application. The problems that in a traditional electroplating process and common baking varnish, weather resistance, temperature resistance and salt spray resistance cannot be balanced, solvent resistance is poor, an ideal effect can be achieved only by depending on a glazing process, the construction process is complex, and cost is high are solved.

The application discloses a preparation method of polymer fluorescent nanoparticles. First, a polylactic acid-polyurethane-polyacrylic acid copolymer is synthesized by reacting alcoholysis-recovered double-hydroxyl polylactic acid, 4,4'-diphenyl methane diisocyanate, polycaprolactone polyol, hydroxyethyl acrylate and acrylic acid; second, a polyethylene imine aqueous solution is prepared, and the polyethylene imine aqueous solution is added dropwise into a butyl acetate solution of the polylactic acid-polyurethane-polyacrylic acid copolymer, high-speed stirring is conducted, and a water-in-oil emulsion is formed; finally, the water-in-oil emulsion is heated, water is evaporated, a fluorescent solution is formed, and the fluorescent solution is subjected to spray drying to obtain the fluorescent nanoparticles. The nanoparticles of the paper cup are uniform in size, have excellent fluorescent performance and biocompatibility, and have a wide application prospect.

This invention discloses a helmet crackle paint spraying process. The technical solution adopted includes the following steps: Step 1: Preparation of crackle primer, mixing 45-65% acrylic resin, 5-8% cellulose acetate, 5-10% methyl isobutyl ketone, 8-10% butyl acetate, 5-8% butyl ether, 5-8% aluminum powder, and 5-10% color paste by weight, and then preparing crackle primer thinner at a dilution ratio of 1:1.1 for later use; Step 2: Preparation of crackle topcoat, mixing 3-5% acrylic resin, 10-20% cellulose acetate, 15-20% methyl isobutyl ketone, 8- Mix 10% butyl acetate, 8-10% butyl ether, 3-8% color paste, and 8-10% cracking agent, and then dilute them at a ratio of 1:0.8 to prepare cracking topcoat thinner for later use; Step 3: First, spray the cracking primer thinner prepared in step 1 evenly onto the helmet surface. After the helmet surface dries for 2-5 minutes, spray the cracking topcoat thinner prepared in step 2 evenly onto the helmet surface. After the helmet surface dries for 10-15 minutes, transfer it to an oven and bake it for 10-20 minutes in a stepped temperature increase manner, while controlling the temperature within the range of 40-80 degrees Celsius.

The invention relates to a high-strength flame-retardant double-sided tape and a preparation method thereof.The high-strength flame-retardant double-sided tape comprises a base film layer, a first bonding layer and a second bonding layer, the first bonding layer and the second bonding layer are arranged on the two sides of the base film layer respectively, and the first bonding layer and the second bonding layer are acrylic acid adhesives respectively. The acrylic adhesive comprises the following components in parts by weight: 10-60 parts of butyl acrylate; 5-10 parts of acrylic acid; 10 to 40 parts of hydroxyethyl acrylate; 10 to 30 parts of butyl acetate; 5 to 20 parts of ethyl acrylate; 30 to 50 parts of a flame retardant; and 0.5-5 parts of an initiator. The flame-retardant level of the high-strength flame-retardant double-sided adhesive tape reaches V0 level, and the high-strength flame-retardant double-sided adhesive tape has high shear strength, high peel strength and temperature-resistant retentivity.