674 results about "Trimethylolpropane" patented technology

The invention relates to the field of wear-resistant fabrics, and discloses a high-strength wear-resistant fabric and a preparation method thereof.The high-strength wear-resistant fabric comprises a surface coating and a base cloth layer, the surface coating and the base cloth layer are formed by coating and drying modified waterborne polyurethane emulsion, and the modified waterborne polyurethane emulsion comprises isophorone diisocyanate, ethylene glycol terephthalate, 2, 3, 4-trimethyl-1, 3-pentanediol monoisobutyrate, polyisobutylene glycol monoisobutyrate, according to the present invention, 2, 2-dimethylolpropionic acid, a modified additive, a flame retardant modifier, 1, 4-butanediol, trimethylolpropane and the like are adopted to prepare the modified additive, dopamine is subjected to in-situ auto-polymerization on the surface of a titanium dioxide nanotube, nano-silica is grown on the surface in situ, and modification is performed through a polysiloxane solution to prepare the modified titanium dioxide nanotube flame retardant; the polysiloxane solution is prepared by carrying out a reaction on methyl triethoxysilane and dihydroxyl-terminated polydimethylsiloxane; the flame-retardant modifier is prepared by reacting 2-chloro-4, 6-diamino-1, 3, 5-triazine, 5-hydroxymethylfurfural and phosphorous acid, so that the fabric is endowed with good mechanical properties and wear resistance, and the fabric has a hydrophobic surface and is excellent in flame retardance and durability.

The invention belongs to the field of hydraulic oil, and particularly discloses a flame-retardant hydraulic oil composition and a preparation method thereof. The hydraulic oil composition is prepared from the following components in parts by weight: 67 to 97 parts of main base oil, 5 to 30 parts of auxiliary base oil, 1.2 to 1.5 parts of a lubricating agent, 1.5 to 2.0 parts of an antioxidant, 0.03 to 0.06 part of a corrosion inhibitor, 0.01 to 0.08 part of a demulsifying agent and 0.01 to 0.08 part of a de-foaming agent, the auxiliary base oil is one of trimethylolpropane trinonanoate, trimethylolpropane caprylic capric acid ester and trimethylolpropane caprylic laurate; the components are sequentially mixed to obtain the flame-retardant hydraulic oil. According to the invention, a specific main-auxiliary base oil system is compounded with other additives, so that the final oil product has excellent anti-oxidation characteristic, the use temperature upper limit is improved, the service life of the oil product is further prolonged, and the stability and low-temperature pumping capacity of the oil product in the use process are improved.

The invention discloses a water-based soldering flux for a photovoltaic N-type battery 0BB assembly and a preparation method of the water-based soldering flux, and belongs to the technical field of soldering flux. The soldering flux is prepared from the following raw materials in parts by weight: 30-60 parts of deionized water, 30-50 parts of an alcohol solvent, 2-8 parts of a high-boiling-point solvent, 1-4 parts of organic acid, 0.1-1 part of a surfactant, 0.1-1 part of an antioxidant, 0.1-1 part of a corrosion inhibitor, 0-1 part of psicose and 0-1 part of trimethylolpropane tricaprylate. According to the invention, the problem of negative influence on tension of thermosetting adhesive and alloying of a fine grid when a traditional soldering flux is applied to a photovoltaic N-type battery 0BB assembly is solved.

The invention belongs to the technical field of polyurethane, and particularly relates to a low-swelling-rate hydrophilic polyurethane sponge composite material as well as a preparation method and application thereof. The low-swelling-rate hydrophilic polyurethane sponge composite material is prepared from a component A and a component B according to the mass ratio of 100: (50-55), and the component A comprises the following raw materials: a foaming agent, wollastonite powder, an antibacterial agent, emulsifying wax and a polyether type cross-linking agent; the component B comprises polyether ester polyol and toluene diisocynate; the polyether type cross-linking agent is prepared by taking triethanolamine as an initiator and carrying out ring-opening polymerization reaction with EO; the polyether ester polyol is prepared by taking polyethylene glycol, diethylene glycol, trimethylolpropane and adipic acid as raw materials through esterification reaction. The hydrophilic polyurethane sponge prepared from the composite material is good in hydrophilicity, high in aperture ratio, fine and smooth in foam hole, low in swelling ratio and excellent in mechanical property.

The invention relates to the technical field of polyurethane adhesives, and provides a heat-conducting polyurethane structural adhesive and a preparation and use method thereof.The heat-conducting polyurethane structural adhesive comprises a first component and a second component, and the first component comprises modified bio-based polyol, polythiol, heat-conducting filler, a first water removal agent, a thixotropic agent, a first catalyst and a second catalyst; the second component comprises epoxy resin, diisocyanate, polyisocyanate, a heat-conducting filler, a coupling agent, a second dewatering agent, a dispersing agent and a retarder; the modified bio-based polyol is selected from at least one of modified castor oil polyol, modified grease polyol and modified cashew nut shell oil polyol; the polythiol is selected from at least one of trimethylolpropane tri (3-mercaptopropionic acid ester), pentaerythritol tetra (3-mercaptopropionic acid ester), butanediol mercaptopropionic acid ester and polythiol. Through the arrangement, the heat-conducting polyurethane structural adhesive has relatively long openable time, and is rapidly cured at room temperature within a short time to generate relatively high initial curing strength.

This invention discloses a visible-light-responsive dynamically covalently cross-linked self-healing polyurethane and its preparation method, belonging to the field of self-healing materials technology. The material is prepared by reacting diisocyanate, long-chain diol, butanediol, trimethylolpropane, and a monool containing an azophenylboronic acid structure in a certain proportion at 60°C. This invention achieves visible-light-responsive self-healing of the polyurethane material by introducing a visible-light-responsive azophenylboronic acid structure into the polyurethane and utilizing the photoresponsive cis-trans isomerization of the azo structure to regulate the reversible breakage and recombination of the boron-oxygen hexacyclic ring. The visible-light-responsive dynamically covalently cross-linked self-healing polyurethane material prepared by this invention maintains high mechanical strength (16.47 MPa) while exhibiting a strength self-healing efficiency of 95.8% after 8 hours of visible light irradiation, showing broad application prospects in smart materials, anti-corrosion coatings, and other fields.

The invention provides a polyacrylic acid inverse emulsion thickener and a preparation method thereof. The polyacrylic inverse emulsion thickener is prepared from the following components in parts by mass: 1 to 10 parts of modified attapulgite, 0.1 to 5 parts of hyperbranched acrylate, 30 to 60 parts of acrylic acid, 1 to 5 parts of a hydrophobic long-chain acrylate monomer, 5 to 20 parts of solvent oil, 0.5 to 5 parts of an emulsifier, 0.01 to 1 part of an initiator and 0.5 to 2.5 parts of a phase inversion agent. The preparation method comprises the following steps: firstly, introducing an isocyanate chain segment and a double-bond active group to the surface of acid-activated attapulgite to improve dispersity and reaction activity; then trimethylolpropane is used as a core, hyperbranched acrylate with multiple double bonds and a hyperbranched structure is constructed, and then the polyacrylic acid inverse emulsion thickener is prepared through an inverse emulsion method. Through the synergistic effect of the hyperbranched acrylate, the modified attapulgite and the hydrophobic long-chain monomer, the thickening performance, the electrolyte resistance and the long-term stability are remarkably improved.

The present invention provides a polyester heat-shrinkable film containing recycled materials and a preparation method thereof, belonging to the technical field of polymer synthetic films. The raw materials of the polyester heat-shrinkable film include recycled PET polyester particles, PET polyester chips, and a modified masterbatch; the modified masterbatch is prepared from polyethylene terephthalate-1,4-cyclohexanedimethanol ester, triphenyl phosphite, polyethylene glycol block copolymer, nano-silica, and hyperbranched polyester amine; the polyethylene glycol block copolymer is prepared from polyethylene glycol and γ-valerolactone under the action of a catalyst; the hyperbranched polyester amine is prepared from trimethylolpropane, methyl crotonate, and diethylenetriamine. The product of the present invention has excellent properties such as excellent unidirectional anti-shrinkage performance and low haze.

The invention discloses a large-current-carrying-capacity flexible power cable, which belongs to the technical field of cable preparation, is used for solving the technical problem that the flame retardant property and the mechanical property of the power cable need to be further improved in the prior art, and specifically comprises a cable core, a wrapping layer, an insulating layer and a sheath layer which are sequentially arranged from inside to outside. The preparation method comprises the following steps: preparing alkoxy silane containing a benzocyclobutene group, preparing flame-retardant particles by using a sol-gel method, preparing modified polyurethane by using modified polysiloxane and 2, 5-furandimethanol as soft segments, naphthalene diisocyanate as a hard segment and trimethylolpropane as a chain extender, and preparing the flame-retardant flame-retardant polyurethane. The linear low-density polyethylene, the MAH-g-PE, the modified polyurethane, the flame-retardant particles and the auxiliary additive are melted and extruded outside the wire core to form the insulating layer, so that the power cable is obtained, the flame-retardant property of the power cable is effectively improved, and the mechanical property and the current-carrying stability of the power cable are also improved.

To provide synthetic fibers and a synthetic fiber treatment agent capable of improving heat resistance.SOLUTION: The synthetic fiber treatment agent contains (A) the following smoothing agent, and (B) organic phosphite ester. The smoothing agent contains at least one selected from (A1) a tri-fatty acid ester of glycerin and (A2) a tri-fatty acid ester of trimethylolpropane.SELECTED DRAWING: None

The invention discloses an epoxy powder coating and a preparation method thereof, and belongs to the technical field of powder coating production, firstly, the epoxy powder coating is prepared from the following raw materials in parts by mass: 100 parts of epoxy resin, 15-20 parts of modified phenolic resin, 12-15 parts of carboxyl-terminated polyester resin, 4-8 parts of nano cerium oxide coated mica, 1.5-2.0 parts of a flatting agent and 0.5-1.0 part of benzoin; the modified phenolic resin is prepared by carrying out addition on bisphenol A phenolic resin and DOPO, neutralizing and carrying out reduced pressure distillation; the carboxyl-terminated polyester resin is prepared by carrying out esterification polycondensation on terephthalic acid, isophthalic acid, neopentyl glycol and trimethylolpropane, and then modifying by trimellitic anhydride; the nano cerium oxide coated mica is prepared by coating white mica powder with cerium oxide precipitate, and then carrying out surface treatment and crushing.

The invention relates to a high-wear-resistance nano-particle composite polyester fiber spinning oil agent and a preparation method thereof. The oil agent contains 3-7wt% of an anti-wear agent composed of modified nano-hydroxyl magnesium silicate, polyoxypropylene stearate and polymethyl methacrylate; and 45-55 wt% of a smoothing agent composed of pentaerythritol oleate and trimethylolpropane fatty acid ester. The preparation method of the oiling agent comprises the following steps: firstly, weighing the components according to the weight; sequentially adding a smoothing agent, an emulsifying agent, a penetrating agent, a bundling agent, an antistatic agent, an anti-wear agent and an anti-coking agent; and finally, reacting for 1.5-3 hours at the temperature of 40-50 DEG C and at the stirring speed of 500-900 r / min to obtain the high-wear-resistance nano-particle composite polyester fiber spinning oil. The oiling agent has excellent wear resistance and smoothness, the manufacturing process is simple, and the oiling agent can well meet the spinning process of nano-particle composite polyester fibers.

According to the sunscreen composition, the preparation method and the application, the sunscreen index can be increased. The sunscreen composition comprises the following components in percentage by mass: 0.001-65% of an oil-soluble sunscreen agent, 0.1-0.5% of a surfactant, 0.1-0.5% of an antioxidant, 0.1-0.5% of a preservative and the balance of water. The thickening agent is prepared from trihydroxy stearin and disteardimonium hectorite, the mass fraction of the thickening agent is 6 to 10 percent, the mass fraction of the trihydroxy stearin is 3 to 6 percent, and the mass fraction of the disteardimonium hectorite is not less than 1 percent; and oil.

The invention relates to the technical field of sliding materials for shock absorption and isolation supports, and particularly discloses a composite sliding plate containing ultra-high molecular weight polyethylene as well as a preparation method and application of the composite sliding plate. The composite sliding plate containing the ultra-high molecular weight polyethylene comprises a working layer material and a base layer material from top to bottom, the working layer material comprises the following raw material components: ultra-high molecular weight polyethylene, trimethylolpropane modified polytetrafluoroethylene, a lubricant, an inorganic filler, a compatilizer and a coupling agent; the base layer material comprises the following raw material components: ultra-high molecular weight polyethylene, molybdenum disulfide coated carbon fibers, graphene and a coupling agent. The prepared composite sliding plate has high compressive strength, excellent wear resistance and excellent creep resistance. By means of the technical scheme, the problems that in the prior art, a sliding material for a seismic mitigation and isolation support is low in compressive strength, poor in wear resistance and poor in creep resistance are effectively solved.

The invention discloses a high-strength light-absorbing heating fiber and a preparation method thereof, and relates to the technical field of functional fiber preparation. The high-strength light-absorbing heating fiber prepared by the invention is prepared by mixing modified polyesteramide and nano microcapsules and then carrying out melt spinning, the modified polyesteramide fiber is prepared by melting and spinning modified polyesteramide, and the modified polyesteramide is prepared by reacting cross-linked maleic anhydride, diisopropanolamine and trimethylolpropane to form hyperbranched polyesteramide and then reacting the hyperbranched polyesteramide with trimesic acid, so that the heat resistance and the strength of the modified polyesteramide are enhanced; the nano microcapsule is prepared by coating mesoporous melamine resin on the surface of nano powder, and the nano powder comprises far infrared ceramic powder and nano zirconium carbide, so that the heat resistance and strength of the light-absorbing heating fiber are further enhanced.

The invention provides high-transparency weather-resistant polyester resin and a preparation method thereof, and belongs to the technical field of high polymer materials, and the preparation method comprises the following steps: sequentially adding polyol, binary acid and a catalyst into a reaction kettle, heating while stirring, heating for 1-2 hours at the temperature of 160-180 DEG C, heating to 235-250 DEG C, carrying out heat preservation reaction for 12-14 hours, and cooling to room temperature to obtain the high-transparency weather-resistant polyester resin. Adding an acidolysis agent to react for 3-4 hours, vacuumizing for 1-3 hours, adding a curing accelerator and an antioxidant, stirring for 20-40 minutes, discharging, cooling and crushing to obtain the high-transparency weather-resistant polyester resin. Wherein the polyhydric alcohol is a mixture of neopentyl glycol, tricyclic dodecanedimethanol, ethyl butyl propylene glycol and trimethylolpropane. The polyester resin prepared by the invention is applied to polyester transparent powder paint, can obviously improve the transparency and weather resistance of a coating, and has good mechanical property and leveling property.

The invention relates to the field of polyurethane resin, and particularly discloses 3D printing light-cured polyurethane resin as well as a preparation method and application thereof. The 3D printing light-cured polyurethane resin is prepared from the following raw materials in parts by weight: 60-80 parts of a polyurethane acrylate prepolymer, 15-25 parts of a diluting monomer, 8-12 parts of a dispersing filler, 6-8 parts of a photoinitiator and 3-5 parts of a stabilizer, the polyurethane acrylate prepolymer is prepared from aliphatic diisocyanate, trimethylolpropane diallyl ether, dipentaerythritol hexaacrylate, o-phenyl phenoxyethyl acrylate and a catalyst, and the polyurethane acrylate prepolymer is prepared from the aliphatic diisocyanate, the trimethylolpropane diallyl ether, the dipentaerythritol hexaacrylate, the o-phenyl phenoxyethyl acrylate and the catalyst; the polyurethane resin prepared by the invention has relatively good flexibility and elasticity, low shrinkage rate and low possibility of deformation, and can be applied to products with complex structures and high dimensional requirements, such as soles and underwear mold cups prepared by 3D printing.

The invention belongs to the technical field of wind power generation blade filling materials, and particularly relates to a polyurethane foam filling material for a wind power generation blade and a preparation method and application of the polyurethane foam filling material. Wherein the component A comprises the following components: polyether polyol a, polyether polyol b, polyether polyol c, polyester polyol d, a viscosity reducer, a cross-linking agent, a foam stabilizer, a catalyst, chemical foaming agent water and an auxiliary agent; the component B is polymethylene polyphenyl polyisocyanate; the polyether polyol a is polyether polyol prepared by taking enzymatic hydrolysis lignin, pentaerythritol, trihydroxymethyl melamine and propylene glycol as initiators and carrying out a reaction; the polyether polyol b is polyether polyol which is prepared by taking bisphenol A and trimethylolpropane as initiators; the filling material prepared by the invention is safe, green and environment-friendly, has the advantages of low density, high strength, better process adaptability and excellent dimensional stability, and also can provide good weather resistance.

The invention relates to the technical field of steel wire ropes, in particular to a processing technology of a tensile corrosion-resistant steel wire rope, which comprises the following steps: selecting alloy steel as a raw material of the steel wire rope, and sequentially carrying out primary wire drawing, quenching, galvanizing treatment and secondary wire drawing on the alloy steel to obtain a pretreated steel wire; the preparation method comprises the following steps: preparing a protective solution from composite silicon dioxide, modified polyurethane, trimethylolpropane tri (3-mercaptopropionate), a photoinitiator and a solvent, carrying out dipping treatment on the pretreated steel wires and the rope core in the protective solution, then carrying out photocuring to prepare treated steel wires and rope cores with super-hydrophobic, wear-resistant and corrosion-resistant surfaces, stranding 2-4 treated steel wires during stranding, and finally, carrying out cold rolling on the stranded steel wires to obtain the super-hydrophobic, wear-resistant and corrosion-resistant steel wire rope with the super-hydrophobic, wear-resistant and corrosion-resistant steel wire rope with the super-hydrophobic, wear-resistant and corrosion-resistant surfaces. 3-6 treated steel wires are stranded to serve as inner-layer steel wires, then 3-6 treated steel wires are stranded to serve as outer-layer steel wires, the inner-layer steel wires surround the treated rope core to be twisted in the same direction, and the outer-layer steel wires surround the inner-layer steel wires to be twisted, formed and bent alternately.

The invention provides a temperature response reversible adhesion solid-solid phase change energy storage film and a preparation method thereof, the main raw materials comprise polyethylene glycol, isophorone diisocyanate, trimethylolpropane tri (3-mercaptopropionic acid) ester and the like, and the preparation method comprises the following steps: 1) preparing a polyurethane-based solid-solid phase change material; 2) mixing the polyurethane-based solid-solid phase change material with waterborne polyurethane according to a ratio to prepare the polyurethane-based solid-solid phase change material; the preparation method disclosed by the invention is simple to operate, and the tensile property, the heat storage property and the like of the final composite phase change material film can be regulated and controlled by regulating the molecular weight of PEG (Polyethylene Glycol); when the PEG is heated to the temperature above the phase change temperature, no leakage occurs, so that the leakage problem of the phase change material in the phase change process is solved; the prepared phase change energy storage film has continuity and reusability, can be bent, compressed and sheared at will, and has temperature control reversible adhesiveness; the method can be widely applied to the fields of batteries, buildings, wearable electronic equipment and the like.

The invention relates to the technical field of polyvinyl chloride, in particular to an anti-aging polyvinyl chloride sheet and a preparation method thereof.The anti-aging polyvinyl chloride sheet is characterized in that one of an organic tin stabilizer and a liquid calcium-zinc stabilizer is introduced into a polyvinyl chloride base material to serve as a stabilizer, the processability of the polyvinyl chloride base material is improved by selecting an ACR auxiliary agent, and ethylene bis stearamide serves as an anti-sticking agent; one or more of oxidized polyethlene wax, polyol ester and stearate are used as a lubricant; 2-carboxyethyl phenyl phosphinic acid and 1, 1, 1-trimethylolpropane are used as raw materials to synthesize hyperbranched polyester, then a hydroxyl-containing s-triazine ultraviolet absorbent is grafted, and the modified hyperbranched polyester plasticizer is obtained and used for plastifying sheets. The preparation method comprises the following steps: selecting hydrotalcite-like compound as a filler, selecting carboxylated silsesquioxane as a modifier through a stripping recombination method to obtain carboxylated hydrotalcite-like compound, and then grafting a hydroxyl-containing s-triazine ultraviolet absorbent, thereby greatly enhancing the flame retardance, fire resistance and weather resistance of the sheet and enhancing the use safety of the sheet.

The invention discloses an aging-resistant sealant for cable joints and a preparation method thereof, and belongs to the technical field of sealants, the aging-resistant sealant for cable joints comprises the following raw materials by mass: 35-50 parts of hydroxyl silicone oil, 45-60 parts of a filler, 3-5 parts of fumed silica, and 2-5 parts of a fluorine-containing hydroxyl-terminated hyperbranched polymer; 3-6 parts of hydrogen-containing silicone oil, 1-5 parts of a silane coupling agent, 1-3 parts of a ketoxime cross-linking agent, 0.05-0.1 part of an organic tin catalyst, 0.1-0.2 part of a lubricant and 1-3 parts of carbon black; the fluorine-containing hydroxyl-terminated hyperbranched polymer is prepared by taking trimethylolpropane, dimethylolbutyric acid and 2, 2-difluoro-3-hydroxy-succinic acid as monomers. The sealant disclosed by the invention has excellent comprehensive performance and aging resistance, and still has excellent performance under the conditions of high temperature, high humidity and high salt mist.

The invention discloses a polyurethane waterproofing agent containing long-chain alkane and a preparation method thereof, and when the polyurethane waterproofing agent is prepared, polydimethylsiloxane with high silicon-oxygen bond energy, low surface energy and molecular chain elasticity and glyceryl monostearate containing long-chain hydrophobic alkane groups are introduced into a polyurethane system; comprising the following steps: polymerizing TDI (toluene diisocynate), TMP (trimethylolpropane) and polydimethylsiloxane to obtain a prepolymer 1; the prepolymer 1 is subjected to a polymerization reaction with N-MDEA, diacetylmonoxime and GMS in the presence of a catalyst DBTDL, and a prepolymer 2 is obtained; acidifying the prepolymer 2 into salt to obtain a prepolymer 3; uniformly mixing the prepolymer 3 and deionized water, and carrying out self-emulsification through an emulsifying machine or by applying an instantaneous nano precipitation technology FNP to obtain a polyurethane emulsion containing long-chain alkane, so as to prepare the polyurethane waterproof agent containing long-chain alkane. The polyurethane waterproof agent prepared by using the FNP has smaller particle size, better stability and good waterproofness, can be continuously emulsified, and has a relatively great application prospect in the field of fabrics.

The invention relates to the technical field of alkyd resin, in particular to organosilicone modified waterborne alkyd resin and a preparation method thereof.The method comprises the following steps that cottonseed oil, an alcoholysis catalyst and trimethylolpropane are subjected to an alcoholysis reaction under protection of inert gas, and an alcoholysis product is obtained; 2, carrying out esterification polymerization reaction on the alcoholysis product, a water-carrying agent, phthalic anhydride and trimellitic anhydride to obtain basic alkyd resin; the organic silicon modified alkyd resin is obtained from the basic alkyd resin and organic silicon under the action of the modified catalyst; sequentially adding a cosolvent, a neutralizer and water into the organic silicon modified alkyd resin, and stirring and mixing to obtain the organic silicon modified waterborne alkyd resin. According to the invention, through a modification technology, the hydrophobicity of a coating is enhanced while the water dispersibility of the organosilicon modified alkyd resin is ensured, so that the organosilicon modified resin has self-cleaning capability and permeation corrosion resistance, a steel structure material can be effectively protected, and the service life of the steel structure material is prolonged.

The invention relates to a preparation method of polyurethane-urea elastic yarn, the polyurethane-urea elastic yarn is composed of polyol and diisocyanate polymer, and the preparation method is characterized in that the polyol and diisocyanate are adopted to prepare a prepolymer with an end-capping ratio (CR) of 1.30-1.65, the addition amount of trimethylolpropane is 0.2-5.0 wt% relative to the weight of the polyurethane-urea yarn, the addition amount of trimethylolpropane is 0.2-5.0 wt% relative to the weight of the polyurethane-urea yarn, and the addition amount of trimethylolpropane is 0.2-5.0 wt% relative to the weight of the polyurethane-urea yarn. According to the present invention, the present invention relates to a polyurethane urea elastic yarn having improved heat resistance and resilience while maintaining stretch properties (elongation), and to a method for preparing the same.

The invention relates to the technical field of coatings, in particular to a graphene modified epoxy anticorrosive coating and a preparation method thereof. The coating is prepared from epoxy resin, graphene-hyperbranched epoxy resin, a reactive diluent and an auxiliary agent, wherein the graphene-hyperbranched epoxy resin is prepared by a three-step method comprising the following steps: firstly, performing dual modification on graphene oxide by adopting 11-aminoundecyltriethoxysilane and 3-aminopropyltriethoxysilane; then reacting with 2-formyl-5-phenylphenol, and finally carrying out condensation polymerization with trimethylolpropane triglycidyl ether to form a hyperbranched structure. According to the invention, collaborative optimization of mechanical strength and corrosion resistance is realized, and the coating has excellent adhesive force, hardness and long-acting corrosion resistance, and is suitable for severe corrosion environments such as ocean engineering and the like.

This application relates to the field of polyurethane adhesive technology, and provides a thermally conductive polyurethane structural adhesive and its preparation and application methods. The thermally conductive polyurethane structural adhesive includes a first component and a second component. The first component includes a modified bio-based polyol, a polythiol, a thermally conductive filler, a first dehydrating agent, a thixotropic agent, a first catalyst, and a second catalyst. The second component includes an epoxy resin, a diisocyanate, a polyisocyanate, a thermally conductive filler, a coupling agent, a second dehydrating agent, a dispersant, and a retarder. The modified bio-based polyol is selected from at least one of modified castor oil polyol, modified oil polyol, and modified cashew nut shell oil polyol. The polythiol is selected from at least one of trimethylolpropane tris(3-mercaptopropionate), pentaerythritol tetra(3-mercaptopropionate), butanediol mercaptopropionate, and polythiol. This configuration allows the thermally conductive polyurethane structural adhesive to have a longer open time and to rapidly cure at room temperature in a short time, resulting in high initial strength.

The invention provides an inorganic silicon crystal-based nano inert material enhanced coating and a preparation process thereof, the coating comprises the following raw materials in parts by weight: 25-35 parts of nano silicon dioxide, 20-30 parts of trimethylolpropane, 30-40 parts of toluene diisocynate, 20-30 parts of phosphate, 10-20 parts of glass micro powder, 25-35 parts of vinyl polyester resin, 5-10 parts of N, N-dimethylformamide, 5-10 parts of a curing agent, 1-3 parts of a defoaming agent, 1-3 parts of a defoaming agent, and 1-3 parts of a defoaming agent. The coating is prepared from the following components in parts by weight: 10-20 parts of N, N-dimethylaniline, 5-15 parts of a flatting agent, 5-10 parts of a defoaming agent, 5-10 parts of a silane coupling agent, 5-15 parts of talcum powder and 10-20 parts of filler. A coating layer formed by the coating has good heat resistance, chemical stability, corrosion resistance, flame retardance, impermeability, flexibility and impact resistance.

The present invention relates to a process for preparing a bonding resin, wherein lignin is provided in the form of an aqueous solution and mixed with one or more of glycerol diglycidyl ether, polyglycerol diglycidyl ether, polyglycerol polyglycidyl ether, glycerol triglycidyl ether, sorbitol polyglycidyl ether, alkoxylated glycerol polyglycidyl ether, trimethylolpropane triglycidyl ether, trimethylolpropane diglycidyl ether, polyoxy propylene glycol diglycidylether, polyoxypropylene glycol triglycidyl ether, diglycidylether of cyclohexane dimethanol, resorcinol diglycidyl ether, isosorbide diglycidyl ether, pentaerythritol tetraglycidyl ether, ethylene glycol diglycidyl ether, polyethylene glycol diglycidyl ether having 2-9 ethylene glycol units, propylene glycol diglycidyl ether having 1-5 propylene glycol units, and / or diglycidyl ether of terminal diol having a linear carbon chain of 3-6 carbon atoms; and optionally one or more additives. The bonding resin is useful for example in the manufacture of laminates, mineral wool insulation and wood products such as plywood, oriented strandboard (OSB), laminated vencer lumber (LVL), medium density fiberboards (MDF), high density fiberboards (HDF), parquet flooring, curved plywood, veneered particleboards, veneered MDF or particle boards.

The invention discloses a preparation method of a poly (1, 3-dioxolame)-based composite electrolyte, and belongs to the technical field of sodium ion batteries. The preparation method comprises the following steps: adding a sodium salt and a 1, 3-dioxolame monomer into a solvent, then mixing with an additive to obtain a precursor, and carrying out standing and polymerization curing treatment to obtain the poly (1, 3-dioxolame)-based composite electrolyte. According to the invention, the polymerization curing time of the precursor is greatly shortened by optimizing a solvent system; the additive is introduced into the precursor, the additive comprises a cross-linking agent and / or an inorganic filler, the cross-linking agent is trimethylolpropane triglycidyl ether, and the inorganic filler is NASICON type solid electrolyte powder, so that the ionic conductivity of the poly (1, 3-dioxolame)-based composite electrolyte is effectively improved, and the service life of the poly (1, 3-dioxolame)-based composite electrolyte is prolonged. And the cycling stability and the first-cycle discharge specific capacity of the assembled battery are remarkably improved.