1053 results about "Cyanate ester" patented technology

The invention relates to a flexible aqueous binder for a lithium battery negative electrode and a preparation method thereof. The preparation method comprises the following steps: firstly, preparing a flexible polyurethane prepolymer containing vinyl by taking hydroxyl-terminated polybutadiene, isocyanate and hydroxyl acrylate as main raw materials; vinyl-containing compounds such as water-soluble acrylic acid (salt) or acrylamide, oil-soluble acrylic ester or acrylonitrile and the like are used as monomers and are combined with a flexible polyurethane prepolymer to prepare the negative water-based binder with flexible cross-linking points through free radical polymerization. The aqueous binder prepared by the technical method provided by the invention can realize point-to-point and point-to-line bonding modes with a pole piece active substance on a microstructure, so that the bonding strength of the active layer material and a copper foil is improved on the premise of not influencing the electrolyte resistance of the binder; and the flexibility of the negative pole piece and the subsequent processing stability are obviously improved.

The invention relates to the field of optical protection materials, and provides a transparent film with laser eavesdropping prevention performance and a preparation method thereof.The transparent film is composed of surface-modified doped tungsten oxide nanosheets, amino-isocyanate bifunctional lithium niobate nanowires, urethane acrylate, an ultraviolet light absorber, a silane coupling agent, a dispersing agent and a flatting agent; the molybdenum-doped tungsten oxide nanosheets are obtained through silane coupling modification after hydrothermal synthesis, and the lithium niobate nanowires are prepared through a gradient modification process of hydrothermal synthesis-silane coupling-isocyanate grafting-phenol end capping. A modified nano material is uniformly dispersed in a resin matrix through an ultrasonic dispersion composite technology, and through blade coating forming, ultraviolet curing and constant-temperature and constant-humidity post-treatment, compared with the prior art, the scheme overcomes the problems that a traditional protective film is insufficient in optical transparency, laser eavesdropping prevention function and dynamic viscoelasticity, and is suitable for the field of high-end security and protection.

The invention discloses a silane cross-linked polyolefin halogen-free flame-retardant cable material and a low-energy-consumption preparation method thereof.The preparation method comprises the steps that EVA / EEA serves as a matrix, silane groups are covalently connected to a polyolefin molecular chain through a free radical grafting reaction, and a grafting material containing an active silane side group is prepared; meanwhile, vinyl isocyanate is adopted to chemically modify hydroxyl on the surface of magnesium hydroxide, vinyl is grafted to the surfaces of particles, the polarity of the particles is reduced, and the dispersity of the particles is enhanced; then carrying out melt blending on the grafted material and modified magnesium hydroxide, constructing an interface bridge by using an anhydride group, and shortening the two-phase distance; finally, through room-temperature natural cross-linking and warm water auxiliary cross-linking, silane groups are promoted to be hydrolyzed into silanol, the silanol is condensed to form a-Si-O-Si-three-dimensional network, meanwhile, vinyl on the surface of magnesium hydroxide and a polyolefin matrix are subjected to free radical copolymerization, and a covalent bond interface layer is formed between inorganic particles and an organic matrix. According to the method, the synergistic improvement of high crosslinking degree, strong stretchability and excellent flame retardance of the cable material is realized through molecular-level interface regulation and cross-linking network optimization.

The present invention relates to a preparation method of a flame-retardant, high-refractive-index, melt-drop resistant waterborne polyurethane coating. A diol, an isocyanate and dibutyltin dilaurate are added to a 500 mL flask, and the temperature is raised to 70-85 °C, and the mixture is stirred and reacted for 1-2 h to obtain a polyurethane prepolymer; then a charring agent is added to the polyurethane prepolymer, and the reaction is continued for 1-2 h; the temperature is lowered to 60 °C, and then 2,2-dimethylolbutyric acid and amino carbon nanotubes are added and reacted for 0.5-1 h; then a high-refractive-index material is added, and the reaction is carried out at 65-70 °C for 1-2 h, the temperature is lowered to 40 °C, and then triethylamine is added and reacted for 0.5-1 h; deionized water is added, and at a rotation speed of 2000 r / min, an ammonium polyphosphate solution is added, and high-speed shear emulsification is carried out for 0.5-1 h to obtain a flame-retardant, high-refractive-index, melt-drop resistant waterborne polyurethane coating. This polyurethane coating has high flame retardancy, high refractive index and no melt-dropping property.

The invention discloses a preparation method of a flame-retardant, light-emitting and recoverable transparent polyurethane material, which comprises the following steps: reacting triethanolamine with diphenylphosphonyl chloride to obtain a light-emitting flame retardant, and polymerizing the light-emitting flame retardant with polyether polyol, isocyanate and a chain extender to obtain the flame-retardant, light-emitting and recoverable transparent polyurethane material, the preparation method is simple, the process is easy to control, the prepared transparent polyurethane material can keep high tensile strength, the limit oxygen index can reach 30.3, the UL-94 grade reaches the V-0 grade, and the flame retardant effect is good; in addition, due to high transparency and fluorescence, the compound can be used as a light conversion film to be applied to a flexible solar cell, so that the photoelectric conversion efficiency of the flexible solar cell is improved.

The invention relates to the field of copper-clad plates, and discloses a low-dielectric-constant high-performance copper-clad plate and a preparation method thereof.The preparation method comprises the specific steps that epoxy resin, phenolic resin, polyphenyl ether modified resin, modified nano silicon dioxide and the like are taken and mixed to obtain a resin glue solution; impregnating glass fabric in the resin glue solution to obtain a prepreg; laminating prepregs, and covering copper foil for hot pressing; the polyphenyl ether modified resin comprises epoxy resin, diallyl cyanate and fluorine-containing polyphenyl ether resin prepared by reaction of polyphenyl ether, bisphenol AF and benzoyl peroxide; the modified nano silicon dioxide is prepared by reacting allyl glycidyl ether, vinyltriethoxysilane and phenyltris (dimethylsiloxane) silane, then grafting with a phosphorus-containing intermediate to prepare a modified additive, and grafting with nano silicon dioxide, and the phosphorus-containing intermediate is prepared by reacting phenylphosphoryl dichloride and eugenol. The copper-clad plate with high flame retardance, high peel strength, heat resistance and low dielectric constant is prepared.

The invention relates to a preparation method of a flame-retardant, high-refraction and melt-drop-resistant water-based polyurethane coating, which comprises the following steps: adding dihydric alcohol, isocyanate and dibutyltin dilaurate into a 500mL flask, heating to 70-85 DEG C, and stirring to react for 1-2 hours to obtain a polyurethane prepolymer; adding a charring agent into the polyurethane prepolymer, and continuously reacting for 1-2 hours; cooling to 60 DEG C, and then adding 2, 2-dimethylolbutyric acid and amino carbon nanotubes to react for 0.5-1 hour; adding a high-refraction material, reacting at 65-70 DEG C for 1-2 hours, cooling to 40 DEG C, adding triethylamine, and reacting for 0.5-1 hour; the preparation method comprises the following steps: adding deionized water, adding an ammonium polyphosphate solution at a rotating speed of 2000r / min, and carrying out high-speed shearing emulsification for 0.5-1h to obtain the flame-retardant, high-refraction and melt-drop-resistant polyurethane coating which has the advantages of high flame retardance, high refractive index and no melt drop.

A resin composition, a prepreg and a preparation method therefor, and a laminate and a preparation method therefor. The resin composition comprises the following raw materials in parts by mass: 20-50 parts of a modified bismaleimide prepolymer, 10-40 parts of cyanate ester resin, 30-60 parts of functional resin, and 50-200 parts of an inorganic filler, wherein raw materials of the modified bismaleimide prepolymer include bismaleimide resin and a modifier, and the modifier comprises tripolynaphthalene diallyl ether. A cured product of the resin composition has an extremely low coefficient of thermal expansion, excellent high-temperature modulus retention and extremely high heat resistance, also shows excellent dielectric properties, and is thus suitable for preparing high-performance semiconductor packaging substrates.

A preparation system and method for an isocyanate. The preparation system comprises a cold phosgenation reactor and a hot phosgenation reactor, which are connected in series, wherein the hot phosgenation reactor is used for receiving a material flow output from the cold phosgenation reactor and allows the material flow to undergo a hot phosgenation reaction so as to obtain an isocyanate; the hot phosgenation reactor comprises a rectifying section, a reaction section and a stripping section; a material flow inlet is provided between the rectifying section and the reaction section; and the reaction section comprises a plurality of layers of trays (100), and an outer weir (102) of an overflow weir of the reaction-section tray (100) at each layer has a different angle of inclination, so as to make the residence duration of the material flow on each reaction-section tray (100) greater than a set duration. By means of the solution, the residence duration of the material flow in the reaction section can reach the set duration, and the duration of a reaction of chloroformamide can be adjusted, which can thus reduce the number of solid particles generated, thereby solving the problem of same silting up a reactor.

The invention discloses an aircraft fairing and a fairing body composite material integrated forming process, and relates to the technical field of aviation equipment manufacturing. The forming process comprises the following steps: 1) preparing a prepreg; (2) sectional forming; 3) a curing process; (4) demolding and trimming; 5) an assembly process; the whole of the front section, the middle section and the tail section of the fairing is of a long-size U-shaped streamline structure. According to the invention, through molecular collaborative design of fluorination modification-polysiloxane toughening-cyanate ester interpenetration, the key contradiction of a high-performance fairing material is systematically solved; ultrahigh strength and toughness are realized at the same time by utilizing in-situ nano microphase separation; a dense graphite carbon layer is generated through catalysis, so that efficient halogen-free flame retardance is achieved; by means of the partition design of molecular fluorination and surface metallization, the high wave transmission and lightning protection functions are ingeniously unified. And finally, a new generation of aircraft fairing composite material with force bearing, wave transmission, heat resistance, impact resistance and environmental stability is successfully prepared.

The invention discloses a preparation method and application of a synergistically modified waterborne polyurethane emulsion, and belongs to the technical field of macromolecular waterborne polyurethane. The preparation method comprises the following steps: firstly, modifying diisocyanate by using binary fluoroalcohol to obtain a fluorine-containing isocyanate emulsion, then preparing a waterborne polyurethane prepolymer emulsion by using the fluorine-containing isocyanate emulsion and dihydric alcohol, and finally, modifying the waterborne polyurethane prepolymer emulsion by using bisphenol A type epoxy resin to prepare the synergistically modified waterborne polyurethane emulsion. An adhesive film prepared from the synergistically modified waterborne polyurethane emulsion has excellent water resistance, mechanical properties and thermal stability, the salt spray resistance is particularly remarkably improved compared with that of an adhesive film prepared from a single compound modified waterborne polyurethane emulsion, the maximum salt spray resistance can reach 18 months, and the adhesive film has good practical application value and industrial production prospects.

The invention relates to a resin composition and a preparation method thereof, a prepreg, a laminated board and a printed circuit board. The resin composition is prepared from the following components in parts by mass: 30 to 80 parts of modified bismaleimide prepolymer and 20 to 60 parts of cyanate ester resin, the modified bismaleimide prepolymer is prepared from the following raw materials: bismaleimide resin and a diamine compound, wherein the diamine compound contains a benzocyclobutene structure. In the resin composition, the modified bismaleimide prepolymer prepared from specific preparation raw materials and the cyanate ester resin are matched according to a specific proportion, so that the resin composition has a relatively low thermal expansion coefficient; meanwhile, the glass transition temperature and the thermal decomposition temperature are higher, the peel strength and the elastic modulus are higher, and the dielectric constant and the dielectric loss are lower, so that the high thermal stability, the size stability, the mechanical property and the dielectric property are better.

The invention belongs to the technical field of hot melt adhesive processing, and particularly relates to a quick-drying polyurethane hot melt adhesive and a preparation method thereof. The preparation method comprises the following steps: mixing polyether polyol, isocyanate, a chain extender A, a chain extender B, a crystallization promoting agent, a surface drying promoting agent and an auxiliary agent, and carrying out extrusion granulation, wherein the chain extender A is obtained by carrying out a reaction on acrylamide and diethanol amine and then carrying out siloxane modification on the reaction product by utilizing methacryloyloxymethyltrimethoxysilane; and the chain extender B is obtained by reacting tetrakis hydroxymethyl phosphonium sulfate and barium hydroxide octahydrate and oxidizing by hydrogen peroxide. The prepared hot melt adhesive has better viscosity and also has a certain flame-retardant effect.

The invention relates to the field of new energy batteries, in particular to a negative electrode current collector and a preparation method thereof, a pole piece and a battery, and the preparation method comprises the following steps: preparing a carbon nanotube with a hydroxyl group on the surface; mixing a carbon nanotube with hydroxyl on the surface, an isocyanate raw material, diol, water and a second organic solvent, and carrying out heating reflux treatment to obtain a third product; mixing the third product, a polytetrahydrofuran raw material, a second organic solvent and a second ammonium salt, and carrying out a polymerization reaction to obtain a precipitate; carrying out drying treatment on the precipitate, so as to obtain foam polyurethane modified by the carbon nano tube; and taking the foam polyurethane modified by the carbon nano tube as a working electrode, carrying out deposition reaction on the working electrode to obtain a base material with a metal layer deposited on the surface, and washing and drying the base material with the metal layer deposited on the surface. The negative electrode current collector lithium metal battery provided by the invention has relatively large energy density, relatively small battery internal resistance, relatively strong cycle performance and relatively low safety risk.

The invention relates to the technical field of rubber materials, in particular to a high-strength and low-dielectric-loss epoxy resin composite material and a preparation method thereof. The epoxy resin composite material is prepared from the following raw materials in parts by weight: 100 parts of modified epoxy resin, 12 to 18 parts of cyanate ester resin, 40 to 50 parts of aramid fiber, 10 to 15 parts of filler, 15 to 25 parts of flexibilizer, 1 to 6 parts of first curing agent and 1 to 2 parts of accelerant. The epoxy resin composite material with high strength and low dielectric loss has the advantages of high strength, good impact resistance, high breakdown strength, low dielectric constant and low dielectric loss. The requirements of high-voltage power transmission equipment insulation parts, high-frequency circuit substrates, spacecraft lightweight structural members and the like on the fields with strict requirements on mechanical strength and dielectric properties can be met; and the preparation method is simple and controllable, the production cost is relatively low, and large-scale production can be realized.

The invention relates to high-strength all-water-blown polyurethane foam and a preparation method thereof. The high-strength all-water-blown polyurethane foam comprises the following components in parts by weight: a polyol composite material: 100 parts of polyether polyol, 2-8 parts of water, 0.5-3 parts of an amine catalyst, 0.2-2 parts of a gel catalyst, 1-5 parts of an organosilicon surfactant, 3-8 parts of a composite filler and 0-10 parts of an auxiliary agent; wherein the composite filler is formed by coating the surfaces of glass beads with porous nano silicon dioxide; the isocyanate material is an MDI (Diphenyl Diisocyanate) or TDI (Toluene Diisocyanate) prepolymer, and the isocyanate index of the MDI or TDI prepolymer is 100 to 120 percent. The surface of the glass bead is coated with a nano silicon dioxide porous shell layer in situ to form a unique'hard core-soft shell 'gradient interface structure, so that the interface bonding force between the filler and a polyurethane matrix is improved, stress transfer is optimized, and the foam material is endowed with excellent comprehensive mechanical properties, especially compressive strength and structural stability.

The invention discloses weather-resistant unsaturated polyester resin as well as a preparation method and photovoltaic application thereof, and relates to the technical field of high polymer materials. When the weather-resistant unsaturated polyester resin is prepared, 1, 6-hexanediol, itaconic acid and an ultraviolet absorption monomer are subjected to esterification and polycondensation to prepare unsaturated polyester; the preparation method comprises the following steps: carrying out reaction on naringenin and 4-isocyanate-tetramethylpiperidine oxide to prepare a functional cross-linking agent; the preparation method comprises the following steps: reacting 3-(4-chlorphenyl) phosphine, 2, 2 '-thiobis (4-chlorophenol) and 2-butene-1, 4-diamine, and polymerizing and coating silicon dioxide to prepare pre-modified silicon dioxide; reacting the pre-modified silicon dioxide, n-butylamine and nickel acetate to obtain modified silicon dioxide; uniformly mixing unsaturated polyester, a functional cross-linking agent and modified silicon dioxide, and performing injection molding to obtain the weather-resistant unsaturated polyester resin. The weather-resistant unsaturated polyester resin prepared by the invention has excellent anti-aging, flame-retardant, self-repairing and mechanical properties.

The present invention relates to bio-based bisphenol monomer of formula I and process of preparation thereof. Specifically, the present invention relates to bio-based bisphenol monomers of formula I containing multiple alkoxyl groups, and polyphenols. The bisphenol monomers of formula I contain built-in methoxyl groups, which represent latent phenolic hydroxyl groups and could conveniently be de-blocked to phenolic hydroxyl groups leading to formation of polyphenols containing catechol / phloroglucinol units with anti-oxidant properties and are potentially useful in various applications like cosmetics, polymer additives and so on. Further, the present invention relates to process of preparation of polymers using bisphenol monomer of formula I as valuable building blocks wherein the high performance thermoplastics are poly(ether sulfone)s, poly(ether ether ketone)s, polyesters, polycarbonates, polyphosphonates, etc. and thermosetting resins are epoxies, cyanate esters, phthalonitriles, propargyl ethers, etc.

The invention relates to the field of environment-friendly materials, in particular to a biodegradable shape-memory high-barrier transparent composite material, a preparation method and application. The biodegradable shape memory high-barrier transparent composite material is prepared from the following raw materials in parts by weight: 70 to 100 parts of PPC-P; 10 to 30 parts of PPC (Polypropylene Chloride) polyol; 0.1 to 1 part of hexamethylene diisocyanate (HD I); 0.01 to 0.1 part of a catalyst; 0.1 to 1.0 part of a lubricant; 0.1 to 0.5 part of an antioxidant; and 0.1-1 part of a chain extender. The preparation method comprises the following steps: adding the PPC-P, the antioxidant and the lubricant into an internal mixer for mixing, then sequentially adding the PPC polyol, the isocyanate and the catalyst into the internal mixer, and finally adding the chain extender for crosslinking to finally obtain the high-barrier transparent composite material with excellent shape memory performance.

The present invention relates to the technical field of bi-component polyurethane structural adhesives and provides a bi-component polyurethane heat-conducting structural adhesive that can be easily adhered to a blue film, and a preparation method therefor. The bi-component polyurethane heat-conducting structural adhesive comprises a polyol component and an isocyanate component, wherein the polyol component comprises a polyether polyol, a bio-based oily polyol, an isocyanate-based silane coupling agent, a first heat-conducting filler, a water absorbent and a catalyst; and one end of the isocyanate-based silane coupling agent is terminated by an isocyanate group, and the other end thereof is terminated by a siloxane group. The mass ratio of the isocyanate-based silane coupling agent to the liquid material in the polyol component is less than 4 wt%. In the polyol component, the isocyanate-based silane coupling agent and the polyol are subjected to a condensation reaction to generate a siloxane-terminated telechelic resin. The isocyanate component comprises an isocyanate-terminated prepolymer, a second heat-conducting filler and a wetting dispersant. The present invention solves the problem of the reduced adhesive property of the existing heat-conducting structural adhesive caused by a large amount of heat-conducting fillers contained in the heat-conducting structural adhesive.

The invention belongs to the technical field of polyurethane, and provides polyurethane resin, polyurethane gloves and a preparation method and application thereof. The polyurethane resin is prepared from the following raw materials in percentage by mass: 5%-12.5% of modified organic silicon polyol, 5%-12.5% of bio-based polyol, 5%-8% of isocyanate, 0.01%-0.02% of an antioxidant, 0.001%-0.002% of a catalyst, 1%-2% of a chain extender, 0.1%-0.7% of polyether polyol, 0.02%-0.05% of a terminating agent and 71%-75% of a solvent, the preparation raw materials of the modified organic silicon polyol comprise a dihydroxyl-terminated organic silicon prepolymer and binary acid. The polyurethane glove prepared by compounding two specific polyhydric alcohol modified organic silicon polyhydric alcohol and bio-based polyhydric alcohol as well as other substances has good wear resistance and fingerprint-free characteristic, is easy to demould, and is suitable for the field of automobile film and chip manufacturing.

The invention relates to the technical field of adhesives, and discloses an anti-aging polyurethane sealant and a preparation method thereof.The polyurethane sealant is prepared by the steps that polyether polyol and binary isocyanate serve as raw materials and react under the action of a catalyst to form a polyurethane prepolymer, then a functional chain extender is used for conducting chain extension on the prepolymer to form polyurethane latex, and then the polyurethane latex is subjected to heat preservation to form the anti-aging polyurethane sealant. The structure of the functional chain extender contains a hindered phenol antioxidant group, and the hindered phenol antioxidant group is introduced into a polyurethane molecular chain by adopting a chemical grafting mode, so that the aging resistance of the polyurethane sealant can be effectively improved, the aging resistance durability of the polyurethane sealant is guaranteed, and the service life of the polyurethane sealant is prolonged. Therefore, the service life and the application value of the polyurethane sealant are effectively improved.

The invention discloses a preparation method of a flame-retardant waterproof polyurethane foam material, which comprises the following steps: firstly, fully mixing polyether polyol, ammonium polyphosphate, waste plastic runway powder and the like, then adding isocyanate, quickly stirring, and then pouring into a specific mold for foaming. And after foaming and forming, taking out and curing at room temperature to finally obtain the flame-retardant waterproof polyurethane foaming material. The waste plastic runway powder is used as the flame retardant aid, the waterproof agent and the reinforcing agent, so that the flame retardant property of the polyurethane foam is remarkably improved, the fire spreading speed is effectively reduced, the waterproof property of the material is also improved, and the durability and the stability of the polyurethane foam in a humid environment are improved. Meanwhile, recycling and utilization of the waste plastic track powder promote cyclic utilization of solid waste resources, and the concept of green and sustainable development is met.

The invention discloses a high-temperature-resistant bismaleimide resin and a preparation method thereof. Comprising nadic anhydride terminated polyimide resin containing a methyl ethyl asymmetric side chain, bismaleimide resin, cyanate ester resin and a toughening and chain extending component. The preparation method comprises the following steps: adding the bismaleimide monomer into the allyl bisphenol A, then adding the reactive diluent, the polyimide resin and the toughening component, and heating and prepolymerizing to obtain the high-temperature-resistant bismaleimide resin. The crosslinking network density and dielectric property of the resin are improved through the reaction of reactive nadic anhydride and bismaleimide resin and the reaction of bismaleimide and cyanate ester resin, and the solubility of the high-temperature-resistant bismaleimide resin in a low-boiling-point solvent is improved through the molecular structure design of polyimide, so that the high-temperature-resistant bismaleimide resin is prepared. The toughness and high temperature resistance of the bismaleimide resin are improved, the size stability of the bismaleimide resin is good, and the application potential of the bismaleimide resin in the fields of aerospace, copper-clad plates, advanced electronic packaging, mechano-electronics and the like is improved.

The invention relates to a lithium ion battery. In order to solve the problem that the performance of the battery is influenced by solvent decomposition and gas production due to the fact that active oxygen is released in the using process when a lithium supplementing agent is added, a solvent ethylene carbonate in an electrolyte is promoted to be subjected to a ring-opening reaction, and the lithium ion battery comprises a positive electrode, a negative electrode, a diaphragm and the electrolyte, the positive electrode comprises a positive electrode active material and a lithium supplement agent, the electrolyte comprises an organic solvent, a lithium salt and an additive, the organic solvent comprises fluoro carboxylic ester, fluoro ether and carbonic ester and does not contain ethylene carbonate, and the additive comprises trimethylsiloxyethyl isocyanate and / or 2-(1, 1-thiophane-3-dioxide)-2, 2-methyl difluoroacetate. Through the synergistic effect of the solvent system and the additive, the stability of the electrolyte in a battery containing a lithium supplement agent is improved, the wettability and low-temperature performance of the battery, especially a high-compaction battery, are improved, and meanwhile, the lithium ion battery has relatively good normal-temperature cycle performance and high-temperature performance.

The invention discloses a flame-retardant B1-grade sheath material and application thereof in cables, and relates to the technical field of high polymer materials. Comprising the following raw materials in parts by weight: 40-50 parts of an ethylene-vinyl acetate copolymer, 10-20 parts of an ethylene-vinyl alcohol copolymer, 10-20 parts of a functional hyperbranched polymer, 30-40 parts of a metal organic framework modified composite flame retardant, 3-5 parts of a compatilizer, 0.8-1.2 parts of an antioxidant and 0.4-0.6 part of a lubricant. The functional hyperbranched polymer comprises structural units introduced by the following monomers: triphenyl isocyanate thiophosphate and N-[(4-methyl-1H-benzotriazole-1-yl) methyl] diethanol amine. The material is high in tensile strength, sufficient in thermal shock resistance and excellent in aging resistance and flame retardance.

The invention discloses an underwater anti-fouling and anti-corrosion functional coating as well as a preparation method and application thereof, and relates to the technical field of coating materials. The underwater antifouling and anticorrosive functional coating comprises the following components: a hydrophilic polyether monomer, a hydrophobic polyether monomer, a catalyst, a chain extender, epoxy resin, isocyanate, a hydrophilic solvent, modified epoxy resin and a curing agent. The method has the advantages of mild reaction conditions, simple steps and no need of inert gas protection. The prepared coating has the advantages of both polyurethane and epoxy resin, not only can be stably cured in water, but also shows underwater adhesive force and long-term durability superior to those of a pure epoxy coating. Meanwhile, the coating can effectively prevent underwater crude oil adhesion and biological fouling, and the problems that a traditional coating is single in function, weak in underwater adhesion force or complex in preparation process are solved.

The invention discloses organic silicon modified acrylic resin antifouling paint and a preparation method thereof, and particularly relates to the field of chemical paint. The antifouling paint is prepared from the following components in parts by mass: 8 to 12 parts of adamantane acrylate, 5 to 8 parts of trifluoroethyl acrylate, 2 to 3 parts of 2-hydroxyethyl acrylic phosphate, 0.8 to 1.2 parts of tert-butyl peroxypivalate, 4 to 6 parts of tridecafluorooctyltrimethoxysilane, 1 to 2 parts of isophorone diisocyanate, 3 to 6 parts of fluorosilane modified nano TiO2 and 1 to 2 parts of graphene oxide. 20-30 parts of deionized water, 0.5-1 part of a polyether modified polysiloxane defoaming agent, and 0.3-0.5 part of an ultraviolet light absorber UV-327 can be additionally added. The preparation method comprises the following steps: S1, preparing isocyanate modified fluorine-containing organic silicon; s2, preparing a ternary copolymer prepolymer; s3, preparing a modified resin matrix; s4, preparing a fluorosilane modified nano TiO2 / graphene oxide composite filler dispersion liquid; and S5, mixing the resin matrix and the dispersion liquid, and performing stirring and vacuum desolventizing to obtain a finished product. The coating has the characteristics of super-hydrophobicity, high hardness, strong adhesion, long-acting antifouling property, aging resistance and environmental protection.

The invention relates to the technical field of coatings, and discloses a super-soft anticorrosive solvent-free polyester coating and a preparation method thereof. The solvent-free polyester coating comprises a component A and a component B, wherein the component A comprises modified polyester polyol, polycarbonate diol, modified organic silicon, a catalyst, an auxiliary agent and an inorganic filler; the component B is polymethylene polyphenyl isocyanate; the solvent-free polyester coating prepared by the invention has the advantages of ultrahigh solid content, accurate regulation and control of coating thickness, high reaction film-forming speed, primer and topcoat integration, ultrahigh flexibility, and favorable adhesive force and corrosion resistance to a base material.

To provide a curable composition which gives a cured product having high solvent resistance and exhibiting a low refractive index and is excellent in stability over time, a resin which can be suitably blended in the curable composition, and a cured product of the curable composition.SOLUTION: In a curable composition which comprises resin (A) and solvent (S), with or without a colorant (C), the resin (A) is dissolved in the solvent (S) and the ratio of the mass of the colorant (C) to the total mass of the components other than the solvents (S) of the curable composition is less than 50 mass%. As the resin (A), a resin containing ester-containing units (a1), hydroxy group-donating units (a2), and block isocyanate group-containing units (a3) is used.SELECTED DRAWING: None