1815 results about "Resin coating" patented technology

The invention relates to the technical field of paint surface detection, in particular to a UV resin coating paint surface defect detection method and system.The method comprises the steps that a paint surface image set shot by light sources at different angles is subjected to reflective point removal treatment, and a fused to-be-detected image facilitating defect detection is obtained; segmenting the to-be-detected image of the paint surface before and after cleaning, calculating a similarity index of the segmented image, and detecting whether an uncured defect exists or not according to a preset similarity threshold value; acquiring and processing data of the segmented image to obtain a segmented region uniformity index, and detecting a color non-uniformity defect according to a preset threshold value; establishing an MSF-CRA-YOLOv5 model to carry out defect detection on the paint surface to be detected, wherein the defect detection comprises a defect type and a defect position; designing a plurality of loss functions in the total loss function, and designing a loss function in a prediction stage for accurate positioning of a bounding box; and finally obtaining a detection result and generating a detection report. According to the method provided by the invention, the efficiency of detecting the paint surface defects of the UV resin coating is improved.

The invention relates to the technical field of coatings, and discloses an amino-terminated ether-containing hyperbranched polyamide modified epoxy resin coating, which comprises a component A: 100 parts of a water-borne epoxy resin emulsion, 5-20 parts of titanium dioxide, 1-2.5 parts of a dispersant, and 0.05-0.2 part of an antifoaming agent; the component B is prepared from 50 to 70 parts of amino-terminated ether-containing hyperbranched polyamide; the amino-terminated ether-containing hyperbranched polyamide contains an active amino-terminated group, so that the amino-terminated ether-containing hyperbranched polyamide is used as a curing agent and is subjected to a cross-linking curing reaction with epoxy resin, the hyperbranched polyamide has a three-dimensional branched network structure and forms a spatial cross-linked interpenetrating network system with the epoxy resin, and the hyperbranched polyamide contains a flexible ether-containing chain segment and an alkyl chain segment, so that the cross-linking property of the hyperbranched polyamide is improved. The epoxy resin coating has a good toughening effect, improves the impact resistance and impact strength of an epoxy resin coating layer and a casting body thereof, and keeps high hardness and tensile strength at the same time.

The invention discloses a waterborne epoxy resin coating, a preparation method and application in bridge protection, and belongs to the technical field of coatings. The water-borne epoxy resin coating comprises the following raw material components in parts by weight: 15-25 parts of epoxy composite resin emulsion, 100 parts of emulsified asphalt, 3-5 parts of a curing agent and 6-10 parts of water, wherein the epoxy composite resin emulsion is obtained by carrying out a composite reaction on 30-60 parts by mass of epoxy resin, 2-3 parts by mass of an emulsifier, 6-9 parts by mass of an acrylate composition and 1.4-1.6 parts by mass of a co-stabilizer; the acrylate composition is prepared by prepolymerizing 15 to 16 parts by mass of butyl methacrylate, 10 to 12 parts by mass of 2-isopropenyl aniline, 5 to 7 parts by mass of allyl glycidyl ether and 1 to 1.2 parts by mass of allyl polyhedral oligomeric silsesquioxane and then combining the prepolymerized materials with 1 to 3 parts by mass of acrylic acid.

The invention relates to the field of coatings, in particular to a chemical corrosion resistant epoxy resin coating and a preparation method thereof. The epoxy resin coating resistant to chemical corrosion comprises the following raw materials in parts by mass: 80-100 parts of an epoxy resin composition, 15-25 parts of a curing agent, 15-25 parts of modified nanoparticles, 2-5 parts of an anti-settling agent, 1-3 parts of a flatting agent, 1-2 parts of a defoaming agent, 5-10 parts of pigment filler and 20-40 parts of a diluent. The epoxy resin coating prepared by the invention not only has excellent binding power, but also can maintain excellent chemical corrosion resistance, water resistance, moisture resistance, aging resistance and the like, and can meet the performance requirements of various industries in the prior art on the epoxy resin coating, so that the application of the epoxy resin coating is greatly expanded, and the epoxy resin coating has very excellent application value.

The invention discloses a hydrophobic and oleophobic modified epoxy resin, which is prepared from the following components in parts by mass: 2 to 5 parts of thiolactone terminated fluorinated prepolymer, 15 to 16 parts of 4, 4 '-diaminodiphenylmethane, 0.13 to 0.14 part of base catalyst, 25 to 26.5 parts of epoxy resin and the balance of tetrahydrofuran solvent, wherein the thiolactone-terminated fluorinated prepolymer is prepared from thiolactone acrylamide, fluorinated acrylate and a photoinitiator in a mass ratio of (2-3): 1: (0.07-0.09) through a free radical polymerization copolymerization chemical reaction under the induction of ultraviolet light, and the thiolactone-terminated fluorinated prepolymer is obtained; wherein thiolactone acrylamide is prepared from DL-homocysteine thiolactone hydrochloride, a NaHCO3 solution and acryloyl chloride according to the mass ratio of 1: (1.3-1.5): (1.1-1.3), the oleophobic and hydrophobic modified epoxy resin provided by the invention effectively solves the problem that an epoxy resin coating in the prior art is poor in oleophobic performance and hydrophobic performance, and the oleophobic and hydrophobic modified epoxy resin has the advantages that the oleophobic and hydrophobic properties of the epoxy resin coating are improved; therefore, the oleophobic and hydrophobic properties of the epoxy resin coating are improved.

The invention provides an anti-aging flame-retardant epoxy resin coating and a preparation process thereof, and belongs to the technical field of coating preparation. The preparation process comprises the following steps: preparing the flame-retardant additive; preparing a coated modified black phosphorus nanosheet; preparing modified hollow glass beads; preparing the epoxy resin coating. The preparation method comprises the following steps: dissolving 3, 4-dihydroxy benzaldehyde and 2-amino-4-methylphenol in absolute ethyl alcohol, carrying out a heating reflux reaction, carrying out dehydration condensation on an aldehyde group in the 3, 4-dihydroxy benzaldehyde and an amino group in the 2-amino-4-methylphenol to generate an imine bond-containing intermediate, respectively dissolving the intermediate and phosphonitrilic chloride trimer, and carrying out a reaction to obtain the phosphonitrilic chloride trimer. The preparation method comprises the following steps: firstly, adding phosphonitrilic chloride into an intermediate, then mixing for reaction, enabling phenolic hydroxyl groups in the intermediate and phosphonitrilic chloride trimer to be subjected to nucleophilic substitution reaction to generate the flame-retardant additive containing phosphorus and a Schiff base structure, and the flame-retardant additive has relatively good compatibility with an epoxy resin matrix, is not easy to separate out and can effectively improve the flame-retardant property of the epoxy resin coating.

The invention relates to the technical field of epoxy resin coatings, and discloses an inorganic composite nano anticorrosive coating material and a preparation method thereof. The inorganic composite nano anticorrosive coating material comprises a component A, a component B and a component C, wherein the component C is obtained by mixing a functional modified inorganic composite nano material and aluminum sorbate; the component A is obtained by mixing modified epoxy resin, a defoaming agent and an anti-settling agent, and the component B comprises a polyamide curing agent. The inorganic composite nano anticorrosive coating material disclosed by the invention has excellent toughness, wear resistance, corrosion resistance, antibacterial and antifouling properties and ultraviolet resistance.

The invention discloses a multi-layer protection cable resistant to an extreme environment, and belongs to the technical field of cables. The cable is of a seven-layer composite structure design and sequentially comprises a conductor, an insulating layer, a shielding layer, a buffer layer, a waterproof layer, a heat insulation layer and a protective outer layer from inside to outside, and the conductor is made of high-purity oxygen-free copper; the insulating layer is made of a polyimide material and has high temperature resistance, low temperature resistance and excellent insulating property; the shielding layer is composed of a tinned copper wire woven mesh and a high-permeability permalloy foil, and electromagnetic interference is effectively shielded; the buffer layer is made of an elastic rubber material to relieve mechanical stress; the waterproof layer adopts a nanoscale fluorosilicone resin coating and has excellent waterproof performance; the heat insulation layer is made of ceramic fibers and aerogel, and efficient heat insulation is provided; and the protective outer layer is made of a high-strength and corrosion-resistant polyether-ether-ketone (PEEK) material. The cable has excellent high temperature resistance, low temperature resistance, corrosion resistance and electromagnetic interference resistance, is suitable for extreme environments, and ensures stable transmission of electric power and signals under extreme conditions.

The invention relates to the technical field of coatings, in particular to a modified FEVE fluorocarbon resin coating and a preparation method thereof. The problem that the FEVE fluorocarbon coating is poor in durability is solved. The preparation method comprises the following steps: modifying FEVE fluorocarbon resin with linoleic acid to obtain a granular material; stirring the modified FEVE fluorocarbon resin, polyisocyanate, montmorillonite and a composite solvent to obtain a prepolymer; pre-dispersing and grinding silicon carbide, modified zinc oxide, a dispersing agent and a composite solvent, adding nano composite particles for ultrasonic dispersion, and adding a prepolymer and a flatting agent to obtain the modified FEVE fluorocarbon resin coating. Wherein the FEVE fluorocarbon resin is modified, so that the crosslinking speed, the coating strength and the adhesive force are improved, the stain resistance, the weather resistance and the corrosion resistance are improved through the nano composite particles and the like, and finally the durability of the FEVE fluorocarbon resin coating is improved.

The invention discloses a water-borne epoxy resin coating which comprises a component A and a component B, the component A is prepared from 60 to 80 parts of 50 percent modified water-borne epoxy resin emulsion, 5 to 15 parts of deionized water, 0.5 to 1 part of wetting dispersant, 0.2 to 0.8 part of defoaming agent, 5 to 10 parts of modified zinc phosphate, 3 to 5 parts of ion exchange antirust pigment, 4 to 6 parts of sericite powder, 3 to 5 parts of glass flake, 5 to 10 parts of precipitated barium sulphate, 1 to 5 parts of nano silicon dioxide and 0.5 to 1 part of rheological additive; 1 to 2 parts of modified organic bentonite slurry; 0.1 to 0.3 part of a pH conditioning agent; and 0.2 to 0.8 part of a flash rust inhibitor. The component B is prepared from 40 to 50 parts of waterborne epoxy-amine adduct, 20 to 30 parts of 50 percent modified polyamide curing agent, 5 to 15 parts of 60 percent Mannich base phenolic aldehyde amine curing agent, 0.5 to 1.5 parts of epoxy silane coupling agent, 1 to 2 parts of nonionic surfactant and 15 to 20 parts of deionized water. The emulsion stability of the waterborne epoxy resin coating is improved through a bisphenol A / F mixed epoxy emulsion and a grafted polyethylene glycol hydrophilic chain segment.

The invention discloses a shielding protection adhesive tape for semiconductor integrated circuit packaging and a preparation method thereof, and relates to the technical field of semiconductor integrated circuit packaging. The shielding protective adhesive tape for packaging the semiconductor integrated circuit is prepared by taking polyimide as a base material and coating a coating, and the coating comprises the following raw materials in parts by weight: 3-5 parts of modified nano silicon dioxide, 30-40 parts of N, N-dimethylformamide, 1-3 parts of a curing agent and 1-3 parts of a curing agent. The invention discloses a high-temperature-resistant epoxy resin coating which is prepared from the following components in parts by weight: 25-30 parts of N, N-dimethylformamide, 25-30 parts of a modified acrylate copolymer, 17-26 parts of ethyl acetate, 12-15 parts of epoxy resin, 1-2 parts of a silane coupling agent KH-550, 0.5-1 part of an antioxidant 1010, 0.3-0.8 part of an ultraviolet absorbent UV-327, 1-2 parts of carboxyl-terminated nitrile rubber, 2-4 parts of decabromodiphenyl ether, 0.1-0.3 part of an organic siloxane defoaming agent, 0.2-0.5 part of an acrylate flatting agent and 10-11 parts of diaminodiphenyl sulfone. The adhesive tape contains the modified nano silicon dioxide, the modified acrylate copolymer and other components, so that the performance of the adhesive tape is guaranteed; pretreatment is meticulous, preparation steps are standard, and mass production is easy; a finished product can be effectively shielded, and the packaging yield and the product stability can be improved.

The invention belongs to the technical field of cement concrete surface coatings, and discloses a cement concrete surface coating structure with acid-resistant and corrosion-resistant functions, which has the advantages that the acid resistance is improved: a composite coating structure is adopted, and the advantages of modified epoxy resin, nano filler and polyurea are combined, so that the acid resistance and durability of the coating are remarkably improved. The modified epoxy resin primer has good permeability, so that the adhesive force between the coating and a concrete base layer can be effectively enhanced, and the falling risk is reduced. And compared with a traditional epoxy resin coating, the preparation method of the composite coating simplifies the curing process and reduces the construction difficulty. And the cost is reduced: the nanofiller is adopted to replace part of the polyurea material, so that the cost of the coating is reduced, and the performance is improved. The coating is endowed with excellent hydrophobicity and self-cleaning capability through surface hydrophobic treatment, dirt adhesion is reduced, and the service life is prolonged.

The invention relates to the field of coatings, and discloses a solvent-resistant antirust anticorrosive biological resin coating and a preparation method thereof, the biological resin coating comprises modified bio-based epoxy resin, modified graphene oxide, modified nano titanium dioxide, a curing agent and a diluent; the modified bio-based epoxy resin is prepared by modifying epoxidized polysiloxane formed by self-polymerization of siloxane; the modified nano titanium dioxide is prepared by modifying a fluorine-containing group; the modified graphene oxide is prepared by grafting a flame-retardant modifier on the surface of graphene oxide, the flame-retardant modifier is prepared by reacting 3-amino-1, 2, 4-triazole with phosphonitrilic chloride trimer to prepare a flame-retardant intermediate, then grafting the flame-retardant intermediate and gamma-aminopropyltriethoxysilane by taking terephthalaldehyde as a bridging agent, and further reacting with DOPO (9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide). The prepared biological resin coating is high in adhesive force, high in pencil hardness and good in corrosion resistance, solvent resistance and flame retardant effect.

The invention discloses a urea-formaldehyde resin blended guanazole-phytic acid-copper flame-retardant resin coating which is prepared by taking a GZ / PA / Cu flame retardant, combined urea and formaldehyde as main raw materials, taking DOP as a plasticizer and taking TA as a curing agent through three-stage reaction; the raw materials of the GZ / PA / Cu flame retardant comprise GZ, PA and a copper source which are bio-based flame-retardant components; the UF-GZ / PA / Cu decomposition temperature is 195.5 + / -2.1 DEG C, the temperature of the maximum decomposition rate is 300.6 + / -1.5 DEG C, and the carbon residue amount is 29.8 + / -2.5 wt.%; and a compact carbon residue layer can be formed. The preparation method comprises the following steps: 1, preparing the GZ / PA / Cu flame retardant; 2, preparing a modified urea-formaldehyde resin emulsion UF; when being used as a wood flame-retardant coating, the flame-retardant coating passes a UL-94V-0 grade test; and the heat release rate HRR is 25.38 + / -1.25 kW / m < 2 >.

The invention discloses a coating as well as a preparation method and application thereof and a coated product. According to the coating provided by the invention, the curing modification of the epoxy resin coating is realized by adjusting the components of the curing agent: a primary amine group contained in the curing agent reacts with an epoxy group to generate secondary amine and hydroxyl, and nitrogen atoms can improve the heat-resistant stability of a cross-linked network; a phenolic hydroxyl group reacts with an epoxy group to generate an ether bond and a hydroxyl group, and the ether bond can improve the overall flexibility of an epoxy resin coating; the anhydride group reacts with the epoxy group to generate various anhydride epoxy intermediates, so that the overall heat resistance of the epoxy resin is improved; the introduction of the ammonium salt can reduce the curing temperature of the epoxy resin, and the introduction of the metal ions can improve the anti-rust performance of the epoxy coating. Finally, the curing agent is used for curing the epoxy resin, so that the corrosion resistance, the adhesive property and the high-temperature resistance of the coating can be remarkably improved, and the application requirements in extremely severe environments such as high humidity and heat, acid-base corrosion and the like can be met.

The invention discloses a preparation method of a bio-based epoxy resin anticorrosive coating, and relates to a preparation method of a bio-based epoxy resin coating. The bio-based epoxy resin anticorrosive paint mainly comprises an anticorrosive filler COFs-AA, bio-based epoxy resin and a curing agent. Wherein the anticorrosive filler COFs-AA is prepared from a two-dimensional covalent organic framework COFs and a bio-based material arachidonic acid (AA) through a covalent condensation reaction; the bio-based epoxy resin is prepared by epoxidizing a bio-based material galangin serving as a raw material through epichlorohydrin, and the curing agent is a common curing agent for epoxy resin. The bio-based epoxy resin anticorrosive paint is compounded by taking biomass as a basic component, and has the characteristics of greenness, environmental protection, no toxicity, good hydrophobicity and good corrosion resistance; the bio-based epoxy resin anticorrosive paint can be applied to the field of corrosion protection of materials such as various metals and woodware.

The invention provides a cardanol-based epoxy resin coating composition. The cardanol-based epoxy resin coating composition comprises the following components in parts by weight: 20-40 parts of cardanol-based epoxy resin; 0.02 to 0.04 part of carbon nano tube grafted polypyrrole; 0.01 to 0.02 part of SiC nano crystal whisker; 5-10 parts of a curing agent; 1-2 parts of a defoaming agent; 1-2 parts of a leveling agent; 40 to 60 parts of acetone; 40 to 60 parts of ethyl acetate. Compared with the prior art, the epoxy resin has the following beneficial effects: 1, compared with common epoxy resin, amino is introduced to a molecular chain, so that the compatibility between the epoxy resin and an inorganic material is greatly improved, and the mechanical property of the material is greatly improved; 2, the carbon nanotube grafted polypyrrole is added into an epoxy system, and the impermeability of the carbon nanotube is utilized, so that the carbon nanotube is used as a physical barrier, and the corrosion resistance of the epoxy coating is enhanced; the reversible reaction between different oxidation states of polypyrrole is utilized to promote the formation of a compact metal oxide layer, so that the corrosion resistance is improved.

The invention discloses a preparation method and application of a coating wool fabric with a far infrared health-care function. The preparation method comprises the following steps: dissolving waste wool by adopting an ionic liquid method to extract regenerated keratin powder, and doping the regenerated keratin powder, chitosan quaternary ammonium salt and functional particles into a membrane substrate material by adopting a blending modification method to prepare a functional coating material; and in combination with plasma pretreatment, coating the surface of the wool fabric with the functional coating material, and further performing crosslinking modification to obtain the far-infrared health-care functional coating wool fabric. According to the method, the problems that the wool fabric subjected to resin coating modification is hard in hand feeling and damaged in style are effectively solved, waste keratin resources are fully utilized, and secondary utilization of the resources is achieved; the electrical heating textile is prepared by using the excellent thermal conductivity and high conductivity of graphene and carbon nanotubes, and more far infrared rays are radiated along with the temperature rise of the graphene heating film.

The invention discloses a resin coating device for an optical fiber ribbon, a production device and a resin coating method, and relates to the technical field of optical fiber curing, a visual positioning device collects position information of the optical fiber ribbon in a mold base, and a controller controls a three-dimensional driving device to drive a dispensing device to move according to the position information; the flow adjusting device is controlled to adjust the glue outlet flow of the glue dispensing device, a proper amount of resin can be accurately smeared on the surface of the optical fiber ribbon, and compared with a traditional immersion type coating mode, the resin consumption is reduced, and the production cost is reduced; according to the invention, dispensing coating is adopted instead of traditional immersion type coating, so that the optical fiber ribbon is prevented from being completely immersed in the resin, and extrusion and lateral pressure of the resin on the optical fiber ribbon in the immersion process of the optical fiber ribbon are fundamentally avoided.

The invention discloses high-strength concrete, a well lid and a preparation method of the well lid, and relates to the field of building materials. The high-strength concrete comprises cement, coarse aggregate, fine aggregate, modified steel fibers, a polycarboxylic acid water reducer and water. Wherein the coarse aggregate comprises broken stones with the continuous grading of 5-8 mm and broken stones with the continuous grading of 10-16 mm; the fine aggregate adopts medium-coarse sand with the particle size range of 1.8-2.2 mm; the preparation raw materials of the modified steel fiber comprise an amino silane coupling agent, an epoxy resin coating and steel fiber, and the preparation raw materials of the epoxy resin coating comprise bisphenol A epoxy resin, nanoparticles, hydroxy acrylic resin, a tertiary amine catalyst and a curing agent. According to the modified steel fiber, the reinforcing effect of the steel fiber on a concrete matrix can be fully exerted, so that concrete which is high in pressure resistance and bearing capacity and especially suitable for well lid manufacturing is obtained.

The invention relates to the technical field of coatings, and discloses a flame-retardant epoxy resin coating and a preparation method thereof.The flame-retardant epoxy resin coating is prepared by adding bisphenol A type epoxy resin, propylene glycol, phosphorus-containing modified imidazolyl benzoxazine, a chitosan-based flame retardant, titanium dioxide, a BYK-071 defoaming agent, a BYK-345 flatting agent, a BYK-220S wetting dispersant and water into a stirrer, stirring, adding a curing agent, stirring, adding a curing agent, and stirring to obtain the flame-retardant epoxy resin coating. The flame-retardant epoxy resin coating is obtained after the reaction is finished. Phosphorus, silicon and benzoxazine structures in the phosphorus-containing modified imidazolyl benzoxazine and the chitosan-based flame retardant all have better flame-retardant effects, and the phosphorus, silicon and benzoxazine structures in the phosphorus-containing modified imidazolyl benzoxazine and the chitosan-based flame retardant have better flame-retardant effects. Chitosan in the chitosan-based flame retardant also has a good flame retardant effect and an antibacterial effect. Benzoxazine can form a heat-resistant phenolic resin structure at high temperature, so that the benzoxazine has a relatively good flame-retardant effect; and an imidazole group in the phosphorus-containing modified imidazolyl benzoxazine also has a relatively good antibacterial effect.

The invention relates to the technical field of heat dissipation plates, in particular to an aluminum-based heat dissipation plate for an energy storage battery and a preparation technology thereof.In order to improve the heat dissipation performance of the aluminum heat dissipation plate, the surface of the aluminum heat dissipation plate is coated with an epoxy resin coating with an epoxy modified graphene material; according to the preparation method, silicon-oxygen bonds and polyethylene glycol groups are introduced to the surface of graphene, so that the molecular flexibility of a grafted chain segment on the surface of the graphene is improved, and the phenomenon of coating falling caused by mismatching of thermal expansion volumes of an epoxy resin coating and an aluminum substrate is avoided; epoxy modified graphene and epoxy resin are mixed and then co-cured and cross-linked to prepare the heat dissipation coating, in the process, epoxy groups on the surface of the graphene and the epoxy resin jointly participate in cross-linking of a curing agent, so that a cross-linked network is formed, the bonding performance between the graphene and the coating is greatly improved, and the durability of the coating is effectively improved.

The invention discloses a polyimide and epoxy resin composite modified fluorocarbon resin coating and a preparation method thereof, and the polyimide and epoxy resin composite modified fluorocarbon resin coating comprises the following components in percentage by weight: 0.4-0.8% of monomer diamine, 0.4-0.8% of monomer dianhydride, 60-70% of N, N-dimethylacetamide, 10-20% of epoxy resin, 0.2-0.5% of epoxy curing agent, 1-2% of fluorocarbon resin curing agent and 15-25% of fluorocarbon resin. The preparation method comprises the following specific steps: reacting monomer diamine and dianhydride in N, N-dimethylacetamide, sequentially compounding with epoxy resin and an epoxy curing agent to obtain a composite modifier, and adding the composite modifier and a fluorocarbon resin curing agent into a fluorocarbon resin solution to obtain the polyimide and epoxy resin composite modified fluorocarbon resin coating. Compared with an existing fluorocarbon resin coating, the performance of the fluorocarbon resin coating is greatly improved in the aspects of mechanical performance, heat resistance, adhesive force and the like.

The invention relates to the technical field of polyester resin, and discloses outdoor hydrolysis-resistant polyester resin and a preparation method and application thereof.The outdoor hydrolysis-resistant polyester resin is prepared from, by weight, 30-38 parts of polyhydric alcohol, 48-50 parts of binary acid, 20.5-28.5 parts of acidolysis agent and 0.1-0.12 part of onium salt curing accelerator; according to the invention, 2-butyl-2-ethyl-1, 3-propylene glycol is used as polyol, and an alkyl side chain is introduced into polyester molecules to generate steric hindrance and shielding effects, so that water molecules are difficult to attack adjacent lipid bonds, and the hydrolysis resistance of the polyester resin is improved. 2, 2 '-[(2-hydroxy-3-phenoxy propyl) azadiyl] diethanol contains a benzene ring structure with thermal stability, and is crosslinked into a polyester molecular chain, so that the glass transition temperature of the polyester resin can be increased, the heat resistance can be improved, and the boiling water resistance of a resin coating can be improved.

The invention discloses a preparation method of an aluminum pigment for water-based ink. The preparation method comprises the following steps: forming a phosphate coating layer on the surface of the aluminum pigment through phosphate; forming a silicon coating layer on the surface of the aluminum pigment through a silane coupling agent and tetraethoxysilane; a phosphate-modified water-based resin coating layer is formed on the surface of the aluminum pigment through phosphate-modified water-based resin. The preparation method of the aluminum pigment for the water-based ink, provided by the invention, has the following beneficial effects that through surface passivation of phosphate ester, the compactness of silicon coating is ensured, and the hue loss of the aluminum pigment is reduced; a silane coupling agent with amino groups is introduced, so that the phosphate coating layer is coated with a silicon coating layer; the phosphate modified water-based resin is introduced, so that the produced aluminum pigment can be better dispersed in water-based ink.

The invention belongs to the technical field of high polymer materials, and particularly discloses a coating, a preparation method and application thereof and a coated product. The coating provided by the invention comprises the following raw material components: 30-105 parts of epoxy resin, 1-100 parts of a curing agent composition and 0.3-100 parts of a flaky filler composition, wherein the flaky filler composition comprises flaky mica powder, flaky glass flakes and flaky andalusite. The coating is modified by adding the flaky filler, so that a laminated structure can be formed in the coating, the barrier and shielding capabilities of the coating are improved, the formula of the flaky filler component is further optimized, and the effects of enhancing the water resistance, heat resistance and corrosion resistance of the epoxy resin coating and prolonging the service life can be achieved; the anticorrosive coating and the coated product prepared from the coating have the characteristics of high coating density, strong permeability resistance and high heat resistance, and can meet the application requirements in severe environments such as high humidity and heat, acid-base corrosion and the like.

The present invention relates to a preparation method of a flame-retardant, high-refractive-index, melt-drop-resistant water-based acrylate resin coating. Water, an emulsifier, and methacrylic acid are added to a reaction vessel and stirred for reaction, and then monomer A, DOPO, and N-vinylcarbazole are added; the temperature is raised to 75-85 °C, an initiator is added dropwise, and the reaction is carried out for 1-2 h to obtain a core-layer emulsion; at the same time, all of monomer B and the initiator are added dropwise, and the reaction is stirred for 1-2 h, then DOPO is added, the temperature is lowered to 50 °C, emulsifier B is added, the reaction time is 30-60 min, then N-vinylcarbazole is added, and the reaction is carried out for 0.25-0.5 h. Then, an ammonium polyphosphate solution, aluminum sulfate, and a chitosan / gelatin composite microsphere are added, and high-speed shear emulsification is carried out, and the pH value is adjusted to 7-8 to obtain a flame-retardant, high-refractive-index, melt-drop-resistant water-based acrylate resin coating; the obtained acrylate resin coating has the advantages of a high oxygen index, no melt dripping during combustion, and a high film refractive index.

An oil-well metal pipe according to the present disclosure can be fastened with high torque. An oil-well metal pipe (1) according to the present disclosure includes a resin coating (100) on or above at least one of a pin contact surface (400) and a box contact surface (500). The resin coating (100) contains: an epoxy resin: 40.0 to 97.0 mass %; a magnesium silicate hydroxide powder: 3.0 to 50.0 mass %; TiO2: 0 to 10.0 mass %; a wax: 0 to 10.0 mass %; a fluorine-based additive: 0 to 20.0 mass %; and graphite: 0 to 10.0 mass %; and satisfies Formula (1):(CW+CF+CG) / (CMg+CTiO⁢2+CSi)≤0.28(1)where, in Formula (1), a content in mass % of the wax is substituted for CW, a content in mass % of the fluorine-based additive is substituted for CF, a content in mass % of the graphite is substituted for CG, a content in mass % of the magnesium silicate hydroxide powder is substituted for CMg, a content in mass % of the TiO2 is substituted for CTiO2, and a content in mass % of the silane coupling agent is substituted for CSi.

A multicore optical fiber (MCF) according to one embodiment of the present invention enables stable core identification. The MCF comprises a glass optical fiber and a resin coating. The glass optical fiber includes a plurality of cores, a marker, and cladding. On a cross-section of the MCF, the arrangement of the centers of the cores and the center of the marker has no rotational symmetry with respect to the center of the cross-section. The cladding includes an inner cladding that surrounds the cores and the marker, and an outer cladding that is provided on the outer peripheral surface of the inner cladding and has a refractive index higher than that of the inner cladding.

A preparation method of a foldable / unfoldable honeycomb structure lunar module can meet the requirements of astronauts living on extraterrestrial bodies, liquid transportation, pressure-resistant containers, etc. In the present invention, a planar circular ring sheet material is equally divided and marked, misaligned and connected, axially stretched, and then glued and cured at a specified position to obtain a foldable and telescopic hollow honeycomb structure; the structure shaping of the honeycomb structure lunar module is realized by stepwise curing of the resin coating on the honeycomb surface. The present invention proposes a new hollow honeycomb structure as the skeleton structure of the lunar module. The planar honeycomb structure has the advantages of low density and strong pressure resistance, and is applied to the sandwich of anti-theft doors, airplanes, corrugated cardboard, etc. When the planar honeycomb is bent, the honeycomb will be deformed, seriously affecting its mechanical properties. The novel hollow honeycomb structure not only has the advantages of the planar honeycomb, but also solves the problem that the planar honeycomb is difficult to be applied to curved surfaces.