841 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 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 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 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 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 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 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 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 belongs to the technical field of coatings, and particularly relates to a two-component flexible road marking coating and a preparation method thereof. The two-component flexible road marking coating comprises a component A and a component B in a mass ratio of (2.5-3): 1, wherein the component A comprises 5-10 parts of bisphenol epoxy resin with the epoxy value of 0.4-0.55, 40-50 parts of polymer dihydric alcohol, 0.1-0.3 part of a catalyst, 10-15 parts of pigment, 15-20 parts of filler, 5-10 parts of an anti-skid material, 25-35 parts of internally mixed glass beads, 0.5-1 part of a dispersing agent, 0.5-1 part of a defoaming agent, 3-5 parts of a plasticizer and 30-60 parts of a solvent; the component B is a curing agent composed of modified isocyanate and an isocyanate tripolymer according to the mass ratio of (5-8): 1; the modified isocyanate is a compound which is prepared by carrying out hydrosilylation reaction on unsaturated isocyanate and siloxane with a silicon atom number of 2-4 and a hydrogen-containing terminal, and two ends of the modified isocyanate are isocyanato; the coating has excellent brittle fracture resistance, water resistance and wear resistance at low temperature.

The invention provides an isocyanate curing agent composition and a preparation method thereof, and relates to the technical field of curing agents. The isocyanate curing agent composition is composed of an IPDI (isophorone diisocyanate) tripolymer prepolymer and a diisocyanate prepolymer, the weight content of NCO in the isocyanate curing agent composition is 5-10%, and the weight ratio of the IPDI tripolymer prepolymer to the diisocyanate prepolymer is (0.5-7): 1. The isocyanate curing agent composition provided by the invention has a relatively long pot life, and can improve the mechanical strength and durability of aspartic ester and other resins.

The invention discloses a printing antistatic polyester release film and a preparation method thereof, the release film is composed of a PET base film and a release agent layer firmly combined with the PET base film, the PET base film is formed by blending, melting, extruding and stretching PET particles added with a composite additive, and the release agent layer is formed by curing a release agent; wherein the composite additive is prepared from polyvinylpyrrolidone, graphene oxide, 3-aminopropyl triethoxy silane and polyvinyl butyral. The release agent is prepared from a polydimethylsiloxane-amino siloxane copolymer, fluorosiloxane resin, a quaternary ammonium salt type antistatic agent, isocyanate silane and a mixture of butyl acetate and methylbenzene. The composite additive provided by the invention not only can provide stable antistatic performance when being added, but also can further enhance the printing performance and the surface activity of the PET base film in the subsequent plasma treatment process, so that the composite additive is suitable for applications such as electronic product packaging, labels and the like which have high requirements on static electricity and printing performance.

The technology of the present disclosure generally relates to the field of power storage devices, and more specifically to a solid electrolyte, an electrode, a solid-state battery, and a method for producing the same. An aspect of the present disclosure relates to a process for producing a solid electrolyte, comprising the steps of: - contacting, in the presence of a catalyst: - a polymer precursor compound comprising polyethylene glycol (PEG) and / or polytetrahydrofuran (PTHF), wherein the polymer precursor compound comprises on average per polymer precursor molecule, -at least 2.0 alkoxysilyl functional groups, with a functionality of at least 2.0, preferably at least 2.5, preferably at least 3.0; and / or -at least 1.0 alkoxysilyl functional groups, with a functionality of at least 3.0; - optionally, an organo-tri-alkoxy silane, an organo-tetra-alkoxy silane, and / or a mixture thereof comprising a metal ion (M+) chelating moiety being a cyanurate, a crown ether, an aza-crown ether, a thia-crown ether, a cryptand, a carbamate, a cyano group, a thiocyanate group, or a metallacrown,, - a metal (M+) salt, preferably does the metal salt comprises Li+, Na+, Mg+, Ca+, Al+, and / or a combination thereof, preferably lithium (Li+); - a solvent, preferably an organic solvent; and, - optionally, an ionically conductive compound; thereby obtaining a solid electrolyte; - optionally, drying the obtained solid electrolyte.

The invention discloses a light-emitting diode packaging material and a preparation method thereof, and relates to the technical field of light-emitting diodes. The method comprises the following steps: adding 4, 4 '-diaminodiphenyl ether into pyromellitic dianhydride for condensation polymerization to obtain a polyamic acid solution, and adding zinc borate nanowires and aluminum nitride powder to prepare an inorganic skeleton enhanced polyamic acid suspension; the preparation method comprises the following steps: reacting zirconium hydroxide sol with an aluminum sec-butoxide solution, and carrying out hydrothermal reaction and high-temperature calcination to obtain ZrO2at-alpha-Al2O3 core-shell particles; the preparation method comprises the following steps: pre-polymerizing 4, 4 '-diphenylmethane bismaleimide and bisphenol A cyanate ester to obtain a prepolymer; the preparation method comprises the following steps: mixing bisphenol A type epoxy resin, inorganic skeleton reinforced polyamide acid suspension, ZrO2at-alpha-Al2O3 core-shell particles and a prepolymer under vacuum, defoaming, injecting into a mold, heating, curing, cooling and demolding to obtain the product. Through the synergistic effect of triple modification, the high temperature resistance and lasting thermal stability of the packaging material are improved, and the packaging material is suitable for the field of light emitting diode packaging with high temperature resistance requirements.

The invention belongs to the technical field of composite material manufacturing, and particularly relates to a POSS (Polyhedral Oligomeric Silsesquioxane) grafted polyimide flexibilizer and toughened modified cyanate ester resin as well as a preparation method and application thereof. Polyimide is grafted and modified through POSS, the POSS grafted polyimide flexibilizer is prepared, toughening modification of cyanate ester resin is achieved through cooperation of a molecular chain flexible structure of polyimide and a cage-shaped structure of nanoparticles of POSS, and the toughness of the cyanate ester resin is improved; meanwhile, the dielectric property and the mechanical property of the cyanate ester resin are improved, and the toughening modified cyanate ester resin keeps good heat resistance.

Provided is a composition which contains a base generator and a polymerizable compound. The base generator contains a salt of a cation and an anion. The cation contains a carbonyl group and a partial structure comprising: a carbon atom; a nitrogen atom N1 bonded via a single bond to the carbon atom; and a nitrogen atom N2 bonded via a double bond to the carbon atom. The polymerizable compound contains a polyiso(thio)cyanate compound and a polythiol compound.

The invention discloses a high-temperature-resistant and high-insulation composite material for an integrally-formed inductor and a preparation method of the high-temperature-resistant and high-insulation composite material, and relates to the technical field of composites.The composite material comprises alloy powder, an insulation material and a coating material, the surface of the alloy powder is coated with the insulation material, and the alloy powder with the surface coated with the insulation material is coated with the coating material; the insulating material is polysilazane, the coating material comprises cyanate ester resin and epoxy resin, and the technical problems that traditional organic coating is prone to decomposition, moisture absorption and aging and poor in interface bonding effect with metal alloy powder can be solved.

The invention relates to high-temperature-resistant and thermo-oxidative resin, a synthesis method and a preparation method of a composite material of the high-temperature-resistant and thermo-oxidative resin, and belongs to the technical field of functional polymer materials. The high-temperature-resistant and heat-oxygen-resistant resin is silicon and boron-containing phthalonitrile copolymerized and modified phenolic aldehyde type cyanate ester resin; wherein the molecular formula is shown in the specification.

The invention relates to the technical field of electronic materials, in particular to a copper-clad plate resin composition with an ultralow-loss medium and a preparation method of the copper-clad plate resin composition. The composition comprises the following components: modified polyphenyl ether, dicyclopentadiene epoxy resin, trifunctional epoxy resin, active ester, cyanate ester, DMAP, spherical silicon dioxide and a POSS-silicon dioxide compound, the preparation method comprises the following steps: carrying out surface norbornenylation modification on bimodal spherical silicon dioxide, and carrying out click reaction on the bimodal spherical silicon dioxide and octa-aminophenyl polysilsesquioxane with tetrazinyl at the tail end to prepare a POSS-silicon dioxide compound, so as to construct an interface transition layer with gradient modulus. According to the invention, collaborative optimization of dielectric loss, thermal mechanical properties and interface bonding strength is realized, and the material has excellent properties of low dielectric loss, high thermal stability, high peel strength and the like, and is suitable for the fields of 5G communication, high-frequency electronic equipment and the like.

The invention discloses a damp-heat-resistant two-component polyurethane structural adhesive, which comprises a component A and a component B in a mass ratio of (1-5): 1, the component A comprises polyether polyol, isocyanate, a reactive plasticizer, a catalyst and an auxiliary agent, and the component B comprises a curing agent, a reactive plasticizer and an auxiliary agent. The reactive plasticizer is at least one kind of grease containing unsaturated double bonds, hydroxyl or epoxy groups. The invention further discloses a preparation method of the damp-heat-resistant two-component polyurethane structural adhesive. The problem that the adhesive property of a two-component polyurethane structural adhesive is degraded due to migration of a plasticizer in a humid and hot environment is solved, and the fatigue property and the adhesive property are considered at the same time.

This invention relates to a polyurethane foam material, its preparation method, and its application. The method includes the following steps: (1) preparing a polyol solution with toluene, and then mixing the polyol solution with an aqueous solution of particulate material to obtain an emulsion; (2) adding isocyanate and a catalyst to the emulsion and stirring evenly to obtain a mixed system; (3) foaming the mixed system to obtain a polyurethane foam material. This invention overcomes the shortcomings of existing polyurethane foaming processes that require the use of surfactants (foam stabilizers) as emulsifiers, to stabilize foam and adjust cell size, and the difficulties in material stirring and dispersion caused by high solution viscosity. This invention provides a method for preparing a polyurethane foam material that is surfactant-free, has low solution viscosity, and is safe and efficient. The polyurethane foam prepared by this invention has excellent performance, small foam pore size, and a wide range of applications.

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

It is an object of the present invention to provide a monomer which can provide a cured product having both high toughness and rigidity. The present invention is a (meth)acrylate (D) which is a reaction product of a thiol compound (A) having two or more mercapto groups; an iso(thio)cyanate compound (B) having two or more iso(thio)cyanato groups; and a hydroxy (meth)acrylate compound (C) having one or more polymerizable groups.

This invention discloses a high-performance solvent-free self-healing wear-resistant topcoat for wind turbine blades and its preparation method, belonging to the field of wind power generation technology. The high-performance solvent-free self-healing wear-resistant topcoat comprises component A and component B. Component A contains IPDI trimer, POSS-isocyanate nano-hybrid, urea-based supramolecular thickener, and latent organic bismuth catalyst. Component B contains modified polyaspartic acid ester, 3-aminopropyltrimethoxysilane, and fluorinated segment polyaspartic acid ester. The high-performance solvent-free self-healing wear-resistant topcoat of this invention constructs a rigid and tough cross-linked network by introducing POSS-isocyanate nano-hybrid and modified polyaspartic acid ester, solving the interfacial incompatibility problem of traditional physically blended coatings. Simultaneously, it endows the coating with excellent wear resistance, strong adhesion, and micro-scratch self-healing ability. This topcoat is a solvent-free system, environmentally friendly, and has good application performance, effectively extending blade life.

The invention provides a polyurethane composite material as well as a preparation method and application thereof, and relates to the field of polyurethane materials. The polyurethane composite material comprises the following components or is formed by the following raw materials in parts by weight: 100 parts of a polyurethane prepolymer; 10 to 40 parts of modified whisker; 5 to 20 parts of modified nanofiber; the modified crystal whiskers are crystal whiskers modified by a first isocyanate modifier and a first free radical modifier, and the chain extender is modified by a second isocyanate modifier and a second free radical modifier; the modified nanofiber is a nanofiber modified by a first diisocyanate type modifier and a second free radical type modifier. According to the polyurethane composite material provided by the invention, grafted and modified whiskers and nanofibers are introduced and directly react with polyurethane to form a molecular-level interpenetrating network, so that the linear thermal expansion coefficient of the polyurethane material is remarkably reduced, and meanwhile, the mechanical property of the polyurethane material is improved.

The invention discloses a photocurable pyridinium active monomer as well as a preparation method and application thereof. The preparation method comprises the following steps: adding diisocyanate, a solvent and a catalyst into a container, uniformly stirring, dropwise adding an alcohol compound, uniformly adding an acrylic monomer after stirring for reaction, and stirring for reaction to obtain isocyanate-acrylate; the method comprises the following steps: uniformly adding a pyridine monomer into isocyanate-acrylate, reacting for 2-4 hours, adding an alkylating reagent, reacting for 8-12 hours, and carrying out reduced pressure distillation separation to obtain the photocurable pyridinium active monomer. And uniformly mixing the photocurable pyridinium active monomer, the photoinitiator, the active diluent and the acrylate oligomer to obtain the 3D printing photosensitive resin. The method disclosed by the invention is sufficient in reaction, relatively simple in process and easy to implement, the photocurable pyridinium salt monomers with different functions can be designed according to material requirements, and the antibacterial and antistatic effects of the 3D printing material are good.

The invention discloses a preparation method of a multi-cured UV (ultraviolet) hot melt adhesive. A mixture of the UV hot melt adhesive is prepared from the following components in parts by weight: 40 to 70 parts of polyurethane acrylate oligomer, 5 to 20 parts of thermoplastic resin, 0.1 to 0.5 part of polymerization inhibitor and antioxidant, 2 to 5 parts of mixed photoinitiator and 5 to 20 parts of diluting monomer, wherein the polyurethane acrylate oligomer is synthesized by the following steps: S1, adding polyester polyol and a polyurethane metal organic catalyst into a flask, heating and uniformly stirring; s2, isocyanate is added in the step S1, heating reaction is performed, and a reactant A is obtained; s3, hydroxyl acrylate is added into the reactant A in the step S2, heating reaction is carried out, and the product polyurethane acrylate oligomer is obtained. The multi-curing LED-UV ultraviolet curing hot melt adhesive prepared by the preparation method disclosed by the invention has the characteristic of being capable of meeting the requirement of rapid ultraviolet curing, and the cohesiveness of the hot melt adhesive can be improved, so that the hot melt adhesive is an environment-friendly and efficient hot melt adhesive.

The invention belongs to the technical field of 3D printing materials, and particularly relates to a washable carbon network construction method based on free radical crosslinking and application of the washable carbon network construction method in 3D printing. According to the invention, binary isocyanate is used as a bridge to modify a-NCO functional group contained in the binary isocyanate, a hydrophilic polyether chain segment is introduced to one end to ensure the washable performance of the resin, an acrylate double-bond chain segment is introduced to the other end to ensure the crosslinking density of the system, and meanwhile, the chain segment ratio of the copolymerized light-cured resin is controlled; the synthesized 3D printing photosensitive resin not only meets the washable requirement, but also has excellent mechanical properties.

An organosiloxane has formula (I), wherein each subscript n independently has an average value of 2 to 18, each R1 is an independently selected monovalent hydrocarbyl group; each R is independently selected from H or a functional group containing a moiety selected from an acrylate group, an alcohol group, an alkoxy group, an epoxy group, an isocyanate group, a methacrylate group, or a urethane group; each D is an independently selected divalent hydrocarbyl group of 2 to 6 carbon atoms; and L an organosilicon linker. The organosiloxane is useful in various application such as a crosslinker or a co-crosslinker in silicone release coating compositions or an adhesion promoter in curable liquid silicone rubber compositions.