228 results about "Dibutyltin dilaurate" patented technology

The invention belongs to the technical field of acrylic plates, and particularly relates to a continuous casting high-hardness acrylic plate and a preparation method thereof.The preparation method comprises the steps that siloxane modified methacrylic acid, methyl methacrylate and n-butyl methacrylate are mixed, an azo initiator is added into the mixture, and then stirring and mixing are conducted to obtain pre-polymerized slurry; the preparation method comprises the following steps: mixing hydroxyl-terminated ether polysiloxane, isophorone diisocyanate and a catalyst dibutyltin dilaurate, reacting to obtain a macromolecular prepolymer, and then adding an end-capping reagent and a photoinitiator into the macromolecular prepolymer to obtain coating slurry; and injecting the pre-polymerized slurry between two annular steel belts which operate synchronously, coating the two annular steel belts with the coating slurry, and carrying out ultraviolet curing to obtain the high-hardness acrylic plate. Through ultraviolet curing, a high-hardness layer is formed outside the acrylic plate, polyurethane is modified by hydroxyl-terminated ether polysiloxane, the rigidity of a soft chain segment is improved by a polysiloxane chain segment, and the hardness of polyurethane is improved.

The invention relates to rosin modified resin and a preparation process thereof and low-odor printing ink, the rosin modified resin is prepared from maleic anhydride, sulfonate alkyd resin, rosin and a metal organic framework, and the sulfonate alkyd resin is prepared from neopentyl glycol, dibutyltin dilaurate, m-phthalic acid-5-sodium sulfonate, phthalic anhydride and pentaerythritol. The printing ink has the effect of improving the strength and smell of the printing ink.

The invention discloses a high-performance anti-corrosion coating based on a layered nano material and a preparation method of the high-performance anti-corrosion coating. The anticorrosive paint is prepared from raw materials including a component A and a component B. The component A comprises epoxy resin, modified MXene nanosheets, modified graphene oxide, nano clay, zinc powder, a corrosion inhibitor, a defoaming agent, a flatting agent and ethylene glycol butyl ether, the modified MXene nanosheets are obtained by conducting surface treatment on the MXene nanosheets through a silane coupling agent, and the modified graphene oxide is obtained by conducting surface treatment on the modified MXene nanosheets through a silane coupling agent. The modified graphene oxide is obtained by modifying graphene with toluene diisocynate and dibutyltin dilaurate; and the component B is a polyamide resin curing agent. According to the anticorrosive paint disclosed by the invention, through interlayer intercalation and surface functional modification of MXene and graphene oxide, a compact physical barrier is formed, the interface bonding force is enhanced, and the permeability resistance is remarkably improved; the corrosion inhibitor is encapsulated in the layered structure, and when the coating is damaged, the corrosion inhibitor can be actively released to repair local microcracks.

The application discloses a kind of high waterproof moisture-permeable polyurethane film materials and high waterproof moisture-permeable fabric, it is related to polyurethane film material technical field, high waterproof moisture-permeable polyurethane film material, including following raw materials: polyether diol, diisocyanate, organic solvent, modified porous biochar, modified diatomite, chain extender, thickening agent, defoaming agent, ultraviolet absorber, dibutyltin dilaurate;The modified porous biochar is prepared by activating corn straw powder by potassium phosphate and potassium hydroxide in cooperation, and polyethylene glycol is added as a dispersant, and the modified porous biochar is treated by mercapto and fluorination modification;By introducing potassium phosphate in cooperation with potassium hydroxide to form an activation system in the preparation of modified porous biochar in polyurethane film material, combined with polyethylene glycol, dispersion optimization and reduction synergy are realized, and the moisture permeability, waterproofness, mechanical properties and durability of the material are improved.

The invention discloses a modified waterborne polyurethane adhesive and a preparation method thereof, and relates to the technical field of adhesives. The carbon dioxide-based polycarbonate polyol is prepared from the following raw materials in parts by mass: 70 to 84 parts of carbon dioxide-based polycarbonate polyol, 8 to 9.6 parts of hexamethylene diisocyanate, 3 to 3.6 parts of isophorone diisocyanate, 0.01 to 0.012 part of dibutyltin dilaurate, 10 to 12 parts of N-methyl pyrrolidone, 3.5 to 4.2 parts of dimethylolpropionic acid, 0.1 to 0.5 part of 1, 3-butanediol, 0.1 to 0.5 part of a catalyst and 0.1 to 0.5 part of a catalyst. The adhesive is prepared from the following components in parts by weight: 1 to 1.2 parts of 1, 4-butanediol, 21 to 25.2 parts of modified polyurethane dispersion, 2 to 2.5 parts of silane-terminated dynamic cross-linking agent, 2.8 to 3.4 parts of triethylamine, 40 to 60 parts of acetone, 200 to 220 parts of deionized water and 10 to 12 parts of ethylenediamine aqueous solution. By introducing the modified polyurethane dispersion and the silane-terminated dynamic cross-linking agent, the base material universality, water resistance and temperature resistance of the adhesive are effectively improved.

The invention discloses an inorganic-organic hybrid cross-linked network high-toughness material and a preparation method thereof, and belongs to the technical field of engineering material preparation. The high-toughness material is composed of an inorganic phase component and an organic phase component, the inorganic phase component is prepared from 5 to 10 parts of amino modified silicon dioxide nanoring; the organic phase component is prepared from the following components in parts by weight: 90 to 105 parts of polycaprolactone glycol, 14.5 to 16.5 parts of isophorone diisocyanate, 0.8 to 1.5 parts of dibutyltin dilaurate, 4 to 6 parts of bis-catechol borane and 6 to 10 parts of polydopamine nano particles. The fracture performance of the material can reach 20 kJ / m or above and is far higher than-1 kJ / m of a common elastomer and-10 kJ / m of high-toughness hydrogel, and meanwhile the tensile strength of 30 MPa or above is kept. According to the material disclosed by the invention, the dynamic borate bond is utilized, after the material is in contact with a damaged section, efficient self-repairing can be realized after the material is placed at room temperature for 24 hours, and the repairing efficiency is gt; by heating and applying pressure, the whole material can be reshaped through fracture and recombination of the dynamic bonds, and green and sustainable effects are achieved.

The invention relates to the technical field of light building boards, in particular to a heat preservation and insulation polyurethane sandwich building board and a preparation method thereof. The method comprises the following steps: polishing, washing and drying the inner surface of an aluminum plate to obtain a pretreated aluminum plate; the two pretreated aluminum plates are fixed in parallel, and the peripheries are sealed to form a pouring cavity; the preparation method comprises the following steps: mixing polyether polyol, a hydroxylated flame retardant, flame-retardant polyol, a surfactant, triethylamine, triethylene diamine, dibutyltin dilaurate and deionized water, uniformly stirring, then adding polyisocyanate, and uniformly stirring again to obtain a polyurethane foaming mixture; and pouring the polyurethane foaming mixed material into the cavity, and curing to obtain the polyurethane sandwich building board. The polyurethane sandwich building board prepared by the invention has excellent thermal insulation property and flame retardance, so that the polyurethane sandwich building board has a wide application prospect in the technical field of light building boards.

The invention discloses a hydrophobic anti-icing material based on silver ions and application in a power transmission line, and belongs to the technical field of hydrophobic anti-icing materials, the hydrophobic anti-icing material is prepared from the following raw materials in parts by weight: 80-120 parts of hydroxyl-terminated polydimethylsiloxane, 5-15 parts of tetraethoxysilane, 0.5-3 parts of silver nitrate, 3-10 parts of hydrophobic nano silicon dioxide and 1-5 parts of nano titanium dioxide. The invention discloses an anti-icing and deicing composite material, which is prepared from the following components in parts by weight: 80 to 120 parts of butyl acetate, 0.1 to 0.5 part of dibutyltin dilaurate, 0.5 to 2 parts of sodium citrate and 2 to 5 parts of modified fluorinated phosphotungstic acid imidazole compound, and solves the problems that the existing material is insufficient in photo-thermal utilization rate, poor in stability in a severe environment, insufficient in hydrophobic capacity and difficult to give consideration to anti-icing and deicing effects. According to the scheme, the modified fluorinated phosphotungstic acid imidazole compound and silver ions are introduced to form a synergistic effect, formation of an ice layer is inhibited, melting of the ice layer is promoted, meanwhile, lasting super-hydrophobicity is provided, a durable hydrophobic anti-icing coating based on the silver ions is formed, and the safety of a power grid is guaranteed.

The invention discloses cold-resistant and tear-resistant coating resin and a preparation method thereof, and relates to the technical field of coatings. The invention discloses cold-resistant and tear-resistant coating resin. The invention relates to a water-based paint, which is prepared from the following raw materials in parts by weight: 40 to 60 parts of modified epoxy resin, 15 to 25 parts of poly (hexanediol adipate), 5 to 10 parts of modified nano silicon dioxide, 8 to 15 parts of diphenylmethane diisocyanate, 3 to 8 parts of trimethylolpropane, 10 to 20 parts of methyl methacrylate, 8 to 15 parts of butyl acrylate, 0.5 to 2 parts of benzoyl peroxide and 0.2 to 0.8 part of dibutyltin dilaurate. The invention relates to an anti-aging coating which comprises the following components in parts by weight: 20-30 parts of a silane coupling agent, 1-3 parts of a silane coupling agent KH-550, 0.3-1 part of an anti-aging agent 264, 5-12 parts of dioctyl phthalate and 20-35 parts of a mixed organic solvent. The raw materials are scientifically proportioned, and the cold resistance and tear resistance of the coating are remarkably improved through the synergistic effect of the modified epoxy resin and the modified nano silicon dioxide; water is strictly controlled in the whole process, side reaction is avoided, and stable resin structure is guaranteed; the preparation steps are clear and definite, the repeatability is high, the solvent system adaptability is good, construction is convenient and fast, and the method is suitable for base material protection in various low-temperature scenes.

The application discloses a preparation method of a photo-thermal ice-resistant super-hydrophobic coating and the super-hydrophobic coating, and comprises the following steps: heating and vacuumizing polytetrahydrofuran (PTMG) to remove water, so as to obtain PTMG after water removal; heating and vacuumizing hydroxypropyl-terminated polydimethylsiloxane (PDMS-OH) to remove water, so as to obtain PDMS-OH after water removal; mixing the PDMS-OH after water removal and the PTMG after water removal, adding ethyl acetate solvent to stir, adding dicyclohexylmethane diisocyanate (HMDI) and dibutyltin dilaurate (DBTDL) dropwise, pre-polymerizing, adding di(2-hydroxyethyl) disulfide (HEDS) when the reaction reaches equilibrium, and preparing polyurethane after the reaction is completed; mixing ZrN nanoparticles, SiO2-F and the polyurethane to obtain a suspension through ultrasonic treatment; spraying the suspension to obtain a coating, and drying the coating to obtain the photo-thermal ice-resistant super-hydrophobic coating. The coating prepared by the application has excellent ice-resistant performance, and can delay the icing time for up to 1422s at-20 DEG C, and the icing time of a blank control group is 17s, which is better than most of the known ice-resistant super-hydrophobic coatings.

The invention relates to the technical field of high polymer materials, and particularly discloses a flame-retardant heat-conducting silica gel insulating coating and a preparation method thereof. The invention discloses a flame-retardant heat-conducting silica gel insulating coating. Comprising the following components: polydimethylsiloxane, aluminum hydroxide, modified nano aluminum oxide, a phosphorus-nitrogen flame retardant, silicon dioxide, methyltris (methylethylketoxime) silane, vinyltris (methylethylketoxime) silane, dibutyltin dilaurate, a diluent, amino propyl triethoxy silane, propyl trimethoxy silane and ethyl aminopropyl trimethoxy silane. And the polydimethylsiloxane is formed by compounding polydimethylsiloxane with the viscosity of 1,500 cp and polydimethylsiloxane with the viscosity of 20,000 cp. According to the invention, by finely blending the proportion of various functional components, especially the optimal combination of polydimethylsiloxane, modified nano aluminum oxide, the flame retardant and the filler, the flame retardance and thermal conductivity of the coating are effectively improved, and meanwhile, good insulativity and mechanical properties are ensured.

The invention belongs to the technical field of metal material plating, and particularly relates to a connector surface composite coating and a preparation process thereof, and the preparation process comprises the following steps: adding modified carbon black and sodium molybdate into deionized water, stirring to obtain a corrosion inhibition material, and mixing with modified zinc oxide to obtain a mixed filler; the preparation method comprises the following steps: adding dibutyltin dilaurate and toluene diisocynate into polypropylene glycol to obtain a core material; adding hexadecyl trimethyl ammonium bromide and the mixed filler into a 93-96 wt% ethanol solution, adding the core material for emulsification, adding an isophorone diisocyanate solution, and stirring to obtain a microcapsule; nickel sulfate hexahydrate, nickel chloride hexahydrate, sodium citrate, boric acid, a surface dispersant, a sodium hydroxide solution and microcapsules are added into deionized water to be mixed, and an electroplating solution is obtained; and putting the connector into the electroplating solution for electroplating to obtain the composite coating. The expansion of pitting corrosion can be inhibited, and the long-term use reliability and stability of the connector in a marine environment are improved.

The invention discloses a silane modified polyether sealant and a preparation method thereof, and belongs to the technical field of sealants. The sealant is prepared from the following raw materials in parts by mass: 80 to 100 parts of MS prepolymer, 1 to 3 parts of silane coupling agent, 10 to 20 parts of plasticizer, 10 to 30 parts of polydopamine modified boron nitride, 40 to 60 parts of nano calcium carbonate, 0.3 to 0.5 part of dibutyltin dilaurate, 0.1 to 0.4 part of light stabilizer and 0.5 to 1 part of ultraviolet absorbent. Wherein the MS prepolymer is obtained by carrying out hydrosilylation reaction on modified allyl-terminated polyether and hydrogen-containing silane, and a side chain of a molecular chain of the modified allyl-terminated polyether contains a benzoic acid structure. A rigid unit with an aromatic ring structure and polar carboxyl are introduced into a polyether long-chain side chain of silane modified polyether to form an MS prepolymer, and the MS prepolymer and polydopamine modified boron nitride have a synergistic effect, so that the sealant is endowed with high hardness and good flexibility.

The invention discloses a preparation process of coating slurry for a lithium ion battery diaphragm. Comprising the following steps: step 1, uniformly mixing polyether polyol, a modified additive, dibutyltin dilaurate, dimethylolpropionic acid and isophorone diisocyanate, under a protective atmosphere, raising the temperature to 80-90 DEG C, reacting for 3-4 hours, then adding 1, 4-butanediol, continuously reacting for 3-4 hours, after the reaction is finished, cooling to 40-50 DEG C, then adding triethylamine, stirring for 30-40 minutes, and then, carrying out heat preservation for 30-40 minutes, so as to obtain a polyurethane prepolymer; slowly adding deionized water to obtain a polyurethane adhesive; 2, inorganic particles, a polyurethane adhesive and a dispersing agent are mixed and stirred at the normal temperature for 10-12 h, and the coating slurry is obtained. The flame-retardant battery diaphragm has the beneficial effects that the flame-retardant unit and the modified additive of the quaternary ammonium salt group are introduced into a polyurethane adhesive system, so that the prepared battery diaphragm has excellent flame retardance, enhanced mechanical property and good electrolyte wettability.

The invention provides a high-strength fire-resistant cable and a preparation method thereof, and belongs to the technical field of cables, and the preparation method of the high-strength fire-resistant cable comprises the following steps: reacting nano-hydroxyapatite with 10-(2-methacryloyloxy) monodecyl phosphate in ethanol, and drying to obtain modified hydroxyapatite; ethylene-vinyl acetate copolymer, magnesium hydroxide, zinc borate, zinc stannate, polyethylene wax, vinyltrimethoxysilane, 2-hydroxy-2-methyl propiophenone and modified hydroxyapatite are mixed, melt-extruded and illuminated at constant temperature, and a sheath layer is obtained; mixing tetraethoxysilane, ethanol, dibutyltin dilaurate, fumed silica, phlogopite paper and glass fibers, heating and aging, and cutting to obtain a fireproof layer; the insulating layer, the fireproof layer and the sheath layer are sequentially coated on the conductor to prepare the high-strength fireproof cable, and the cable prepared by the invention has good mechanical property, electrical insulating property and fireproof property.

The invention discloses a modification method of end-group-modified polyphenylene sulfide, which comprises the following steps: mixing polyphenylene sulfide prepared by a sodium sulfide method, an organic solvent, a sulfydryl modifier and an organic tin catalyst, and reacting for 1-4 hours at the temperature of 200-300 DEG C to obtain the end-group-modified polyphenylene sulfide, the chemical structural formula of the end group modified polyphenylene sulfide is shown as a formula I, wherein n is greater than 0. According to the invention, isocyanate and a terminal group react under the catalysis of dibutyltin dilaurate to generate thiocarbamate, and the terminal group of polyphenylene sulfide is accurately regulated and modified from the molecular level, so that the solution fluidity of polyphenylene sulfide is improved, and the processability is obviously improved.

The invention discloses flame-retardant polyurethane sponge for an automobile and a preparation method of the flame-retardant polyurethane sponge, and relates to the technical field of polyurethane sponge production. Comprising the following raw materials in parts by mass: 80 to 100 parts of polyether polyol, 45 to 55 parts of diphenylmethane diisocyanate, 2.5 to 3.5 parts of deionized water, 0.2 to 0.5 part of dibutyltin dilaurate, 1.0 to 2.5 parts of silicone oil and 15 to 25 parts of a flame-retardant intermediate. The flame retardant property of the polyurethane sponge is effectively enhanced by adding the micromolecular flame retardant component and applying the direct-current electric field, the flame retardant capacity of the material is directly improved by adding the micromolecular flame retardant component, and the direct-current electric field drives polar molecules in a flame retardant intermediate to directionally migrate and accumulate towards a bottom electrode, so that the flame retardant property of the polyurethane sponge is improved. The flame-retardant effective components are preliminarily enriched at the bottom, effective flame retardance can be carried out on bottom battery flames when a new energy automobile is on fire, and the escape probability of people is increased.

The invention discloses organic silicon modified wood lacquer and a preparation method thereof, and relates to the technical field of coatings. The invention discloses organic silicon modified wood lacquer. The water-based silicone sealant is prepared from the following raw materials in parts by weight: 20 to 35 parts of hydroxyl-terminated polydimethylsiloxane, 8 to 15 parts of methyltrimethoxysilane, 12 to 20 parts of bio-based polyol, 6 to 12 parts of isophorone diisocyanate, 3 to 8 parts of modified nano titanium dioxide, 5 to 10 parts of polyvinylidene fluoride, 4 to 9 parts of modified organosilicone elastomer, 0.2 to 0.8 part of dibutyltin dilaurate and 1 to 3 parts of ammonium polyacrylate. 0.5 to 1.5 parts of polyether modified polysiloxane, 2 to 6 parts of alcohol ester-12 and 15 to 30 parts of deionized water. According to the organic silicon modified wood lacquer, hydroxyl-terminated polydimethylsiloxane serves as a matrix, cross-linking is conducted through methyl trimethoxy silane, toughening is conducted through bio-based polyhydric alcohol, an interpenetrating network structure is formed in cooperation with multiple layers of modified nano titanium dioxide and the organic silicon elastomer, the organic silicon modified wood lacquer has high cross-linking density and flexibility, a coating is compact, and weather resistance is high.

Belonging to the technical field of fabric degradation, the invention relates to an ecological green fabric degradation process, which belongs to the technical field of fabric degradation, and comprises the following steps: adding anhydrous N, N-dimethylformamide to a reaction kettle equipped with a mechanical stirrer, a condenser pipe and a nitrogen protection device to dissolve hyperbranched polyglycidyl ether with a number average molecular weight Mn of 2000-5000 g / mol, adding dibutyltin dilaurate of which the use amount is 0.1-0.5% of the mass of the hyperbranched polyglycidyl ether, dropwise adding 3-isocyanate propyl triethoxy silane while stirring, heating to 58-62 DEG C, and reacting for 3.5-4.5 hours, so that isocyanate groups react with part of hydroxyl groups on the surface of the hyperbranched polyglycidyl ether to form carbamate bonds; according to the scheme, a specific shell structure is constructed, so that the defect that degradation components are easy to lose in a traditional process is effectively overcome, and in an actual test, the scheme can effectively prevent the loss of functional components in a washing process and ensure the stability of the fabric in a taking period.

The present invention provides a friction-reducing liquid crystal screen optical film and a preparation method thereof, relating to the technical field of optical films. The preparation method comprises the following steps: dissolving polyethylene glycol and silane in toluene, adding dibutyltin dilaurate, vacuumizing and extracting the toluene solvent after refluxing, and the remainder being polyethylene glycol containing terminal alkoxysilane; adding methyltrimethoxysilane, dimethyldimethoxysilane, aminosilane, fluorosilane, and polyethylene glycol containing terminal alkoxysilane to a mixed solvent of ethanol and isopropanol; adding hydrochloric acid solution and glacial acetic acid to the solution, stirring and aging to obtain a sol-gel solution; coating the sol-gel on the optical film, and drying to obtain the friction-reducing liquid crystal screen optical film. The present invention has the beneficial effects of effectively reducing the electrostatic effect generated during the friction process and improving the friction-reducing performance of the liquid crystal screen optical film on the lower polarizer.

The invention relates to the field of new chemical materials, and discloses a polyacrylamide / polyurethane dual-network hydrogel based on a sacrificial bond energy dissipation mechanism and a preparation method thereof. The preparation method comprises the following steps: S1, preparing an acrylamide precursor, adjusting the pH value, carrying out polymerization to obtain polyacrylamide colloid, and carrying out crushing granulation, alkaline post-hydrolysis, drying and secondary crushing to obtain powder; s2, enabling polyethylene glycol and hexamethylene diisocyanate to react under the catalysis of dibutyltin dilaurate by adopting a prepolymer method, adding a chain extender, and performing neutralization hydrophilization, high-speed shearing emulsification and ethanediamine post-chain extension to obtain a waterborne polyurethane emulsion; s3, performing in-situ polymerization on the powder and the emulsion by a one-pot method to form an interpenetrating double-network structure; the hydrogel obtained in the invention takes a waterborne polyurethane network as a sacrifice bond to consume energy, and a polyacrylamide network maintains matrix integrity, so that the hydrogel has better mechanical properties and can be used in different fields such as biomedical engineering.

The application discloses a preparation method of an interface treatment agent for a steel structure, and comprises the following steps: adding graphene powder and boron nitride powder into a mixed solution composed of ethanol and water, performing ultrasonic treatment, then centrifuging the mixed solution, collecting supernatant, drying the supernatant, and obtaining graphene nanosheet / boron nitride nanosheet composite material; mixing and stirring polydimethylsiloxane, dibutyltin dilaurate and the graphene nanosheet / boron nitride nanosheet composite material, adding polyacrylate emulsion, and performing stirring treatment to obtain modified polyacrylate emulsion; mixing cement, redispersible latex powder, river sand, defoaming agent, triethanolamine and hydroxyethyl methyl cellulose as dry material components; and taking the modified polyacrylate emulsion as a liquid component. The interface treatment agent can not only effectively improve the interface performance between the steel structure and mortar, but also improve the corrosion resistance and weather resistance of the surface of the steel structure.

The invention relates to the technical field of fluorosilicone resin water cups. The fluorosilicon resin composite material is prepared from the following raw materials in parts by weight: 50 to 70 parts of hydroxyl-terminated polydimethylsiloxane, 10 to 20 parts of tetraethoxysilane, 25 to 35 parts of perdecafluorooctyltriethoxysilane, 5 to 15 parts of phenyltrimethoxysilane, 10 to 20 parts of xylene, 3 to 8 parts of an additive and 1 to 2 parts of dibutyltin dilaurate. According to the invention, ryegrass contains natural antibacterial ingredients of flavones and phenols, lignin and phenol in the powder also have antibacterial properties, phenolic hydroxyl groups of phenol can be combined with bacterial proteins to denature the proteins and inhibit bacterial growth, and benzyltriethylammonium chloride in the base material is added, so that bacteria can permeate to interfere the metabolism of the bacteria, and the antibacterial property of the powder is improved. Silver ions and quaternary ammonium salt can be slowly released through the resin matrix, the antibacterial effect is maintained for a long time, and the antibacterial performance of the fluorosilicone resin composite material water cup is improved.

The invention relates to the technical field of waterproof coiled materials, in particular to an anti-aging waterproof coiled material and a preparation process thereof. The preparation process of the anti-aging waterproof coiled material comprises the following steps: preparing the composite antioxidant, preparing the composite anti-ultraviolet agent, preparing the modified chitosan flame retardant and preparing the waterproof coiled material. The preparation method comprises the following steps: pretreating halloysite nanotubes, dispersing the pretreated halloysite nanotubes in an ethanol solution, adding tetraethoxysilane, carrying out a reaction under the catalysis of dibutyltin dilaurate to obtain a nano-hybrid carrier, carrying out surface modification on the nano-hybrid carrier by using KH-560, and loading 4-aminodiphenylamine on the surface of the nano-hybrid carrier by using a bridging effect of the KH-560 to obtain the 4-aminodiphenylamine loaded nano-hybrid carrier. According to the present invention, the supported composite antioxidant is prepared, can be uniformly dispersed in the waterproof coiled material matrix after being added into the waterproof coiled material so as to improve the thermo-oxidative aging resistance of the waterproof coiled material, and can be used as the rigid skeleton after being dispersed in the waterproof coiled material matrix so as to effectively improve the tensile strength of the waterproof coiled material.

This invention discloses a fluorine-free waterproofing agent and its preparation method, relating to the field of waterproofing agent technology. The preparation method involves mixing nano-silica with acrylate-terminated polydimethylsiloxane, octadecyl methacrylate, and methacryloxypropyltrimethoxysilane, followed by dropwise addition of azobisisobutyronitrile (AIBN) to obtain an organic-inorganic hybrid prepolymer acetone solution. Polycaprolactone diol, isophorone diisocyanate, and dibutyltin dilaurate react to prepare a polyurethane prepolymer. The mixture is then cooled and reacted with dimethylolpropionic acid and acetone, followed by further cooling, neutralization, and emulsification to obtain an aqueous polyurethane dispersion. This dispersion is then emulsified with the hybrid prepolymer, reacted with methyl methacrylate and hydroxyethyl acrylate, and finally reacted with glycerol polyglycidyl ether to obtain a composite emulsion. An antifoaming agent, leveling agent, and bactericide are added to the composite emulsion to obtain the fluorine-free waterproofing agent. The waterproofing agent of this invention provides durable waterproofing performance after being applied to fabrics.

The invention relates to the technical field of plugging coatings, in particular to a mining low-breathability fireproof plugging coating and a preparation process thereof. The mining low-permeability fireproof plugging coating is prepared from the following raw materials in parts by weight: 15 to 20 parts of diphenylmethane diisocyanate, 6 to 10 parts of polyether polyol, 0.4 to 0.8 part of fatty alcohol-polyoxyethylene ether, 1.2 to 1.5 parts of a carbon layer densification promoting fireproof agent, 0.4 to 0.6 part of a BYK defoaming agent, 30 to 35 parts of Portland cement, 15 to 18 parts of perfluoropolyether sodium carboxylate modified river sand, 3 to 4 parts of dibutyltin dilaurate and 2 to 5 parts of calcium carbonate. 0.1-0.2 part of a polycarboxylate water reducing agent, 2-5 parts of water glass and 60-80 parts of deionized water. According to the invention, the carbon layer densification promoting fireproof agent is prepared, organic materials and inorganic materials are reasonably mixed, the prepared composite spray coating can be firmly adhered after being sprayed to a wall body, and the plugging material formed after solidification at normal temperature has excellent fireproof and flame-retardant properties and low air permeability.

The invention discloses an environment-friendly fluoride-free super-hydrophobic coating material and a preparation method thereof, and belongs to the technical field of super-hydrophobic coating materials. The preparation method comprises the following steps: mixing hyperbranched polyurethane, ethyl acetate and propylene glycol methyl ether acetate for 10-20 minutes, adding polydimethylsiloxane and octadecyl isocyanate, mixing and reacting for 60-80 minutes, adding multi-stage microspheres, carrying out ultrasonic treatment for 15-30 minutes, adding an initiator, and carrying out ultrasonic treatment for 20-30 minutes, thereby obtaining the hyperbranched polyurethane adhesive. Adding Isopar G, isophorone diisocyanate, a silane coupling agent KH-560, dibutyltin dilaurate and triethylene diamine, and stirring and dispersing for 30 to 50 minutes, so as to obtain the environment-friendly fluorine-free super-hydrophobic coating material. The environment-friendly fluoride-free super-hydrophobic coating material prepared by the invention has good super-hydrophobicity, self-repairing function and wear resistance.

The invention discloses a preparation method of a waterborne polyurethane / carbon nanotube composite adhesive for a fiber bulletproof material. The preparation method comprises the following steps: synthesizing a waterborne polyurethane prepolymer under the protection of a nitrogen atmosphere by taking polyisocyanate and polyol as polymeric monomers, dibutyltin dilaurate as a catalyst and 2, 2-bis (hydroxymethyl) propionic acid as a hydrophilic chain extender; the preparation method comprises the following steps: synthesizing waterborne polyurethane containing a maleimide group by taking 4-maleimidophenol as a modified monomer; the waterborne polyurethane / carbon nanotube composite adhesive is prepared through a covalent chemical reaction. According to the preparation method disclosed by the invention, the waterborne polyurethane / carbon nanotube composite adhesive is applied to the surface of the ultra-high molecular weight polyethylene fiber, so that the problems of low friction coefficient, large back bulge and the like when the fiber composite material is used as a bulletproof material are effectively solved while the interface performance of the fiber composite material is improved.

The present application relates to the technical field of polyurethane adhesive, and particularly discloses a special polyurethane adhesive as well as a preparation method and application thereof.The special polyurethane adhesive comprises the following raw materials in parts by weight: 40-45 parts of castor oil, 25-30 parts of polycaprolactone glycol, 30-35 parts of isophorone diisocyanate, 0.05-0.1 parts of dibutyltin dilaurate, 5-8 parts of dimethylol propionic acid, 3-5 parts of a sulfur-containing chain extender, 4-6 parts of a functional filler, 3-5 parts of hexadecyl trimethoxysilane, 8-12 parts of hydroxyethyl methacrylate, 0.8-1.2 parts of a photoinitiator, and 60-70 parts of deionized water.The special polyurethane adhesive prepared by the present application has unique raw material formula and process, and has the characteristics of photocuring and water dispersion;after curing, a dense crosslinked network is formed, and the adhesive exhibits excellent moisture resistance, interfacial bonding strength and mechanical stability, and is suitable for the surface of materials with high-performance bonding requirements in the fields of automobiles, electronics, construction and aerospace.

The invention relates to a bio-based fabric conversion process, which belongs to the technical field of fabrics, and comprises the following steps: mixing glycerol, itaconic acid and 4-toluene sulfonic acid according to a mass ratio of (9.0-10.0): (12.5-13.5): (0.01-0.02), introducing nitrogen for protection, heating to 140-160 DEG C, carrying out melt polycondensation reaction for 2-4 hours, vacuumizing, carrying out vacuum dehydration treatment for 1-3 hours, and cooling to obtain hydroxyl-terminated hyperbranched polyester; the hydroxyl-terminated hyperbranched polyester is dissolved in anhydrous acetone, isophorone diisocyanate and dibutyltin dilaurate are added, the mass ratio of the isophorone diisocyanate to the hydroxyl-terminated hyperbranched polyester is (1.0-1.2): 1, the mixture is stirred at the constant temperature of 50-60 DEG C for a reaction for 1.5-2.5 h, an isocyanate-terminated prepolymer is prepared, and the isocyanate-terminated hyperbranched polyester-dibutyltin dilaurate copolymer is obtained. The formed flexible cross-linked network can effectively disperse stress concentration when the fibers are subjected to external force, and accumulation of stress on a single cross-linked point is avoided.