29 results about "Dibutyl tin dilaurate" patented technology

The present disclosure provides a self-healing polyurethane resin and a preparation method thereof. The preparation method of the self-healing polyurethane resin coating comprises the following steps: polytetrahydrofuran is placed in a three-necked flask, heated to remove water and kept in an oxygen-free environment; a certain amount of isophorone diisocyanate and a catalyst dibutyltin dilaurate, anhydrous tetrahydrofuran are added into the system and reacted at this temperature; the system is cooled and 1,4-butanediol or bis(2-hydroxyethyl)disulfide, anhydrous tetrahydrofuran are added into the system for reaction; after the reaction is completed, the system is immediately cooled, more than solvent is spun off by rotary evaporation, the product is coated on the surface of a substrate and solidified to form a coating. The obtained coating has high self-healing ability, long healing life, low curing temperature, and excellent mechanical properties and corrosion and stain resistance.

This invention relates to the field of skin tissue repair material manufacturing, and particularly to a porous polyurethane dermal scaffold and its preparation method. The preparation method of the porous polyurethane dermal scaffold includes the following steps: adding dibutyltin dilaurate, triethylenediamine, butanediol, and silicone oil sequentially to polyethylene glycol and mixing thoroughly to obtain a mixed solution; adding lysine diisocyanate and ultrapure water to the mixed solution and mixing thoroughly to obtain a mixture; placing the mixture in a mold and allowing it to foam and solidify, then curing, demolding, washing, and drying to obtain the porous polyurethane dermal scaffold. The preparation method of this invention is simple, the material has a pore size of 30-200 μm, a porosity > 95%, a tensile strength of 10-12 N / cm, an elongation at break > 50%, is non-toxic and non-immunogenic, and meets the biocompatibility requirements of standards such as GB / T 16886, showing great application potential in wound dressings and skin tissue engineering.

The application discloses a high-thermal-conductivity modified polyurethane pouring sealant and a preparation method thereof, and relates to the technical field of adhesives. The application comprises the following raw materials in parts by mass: modified polyurethane prepolymer 265-318 parts, silane coupling agent KH-550 5-6 parts, modified composite filler 80-96 parts, ethylene glycol amine 3.2-3.7 parts, and dibutyltin dilaurate 0.3-0.36 parts. The modified composite filler is prepared from the silane coupling agent KH-550, graphene, silicon carbide, boron nitride nanosheet, cellulose nanofiber and modified nitrogen-doped graphene. The modified nitrogen-doped graphene is prepared from nitrogen-doped graphene powder, calcium nitrate tetrahydrate and diammonium hydrogen phosphate. The application effectively improves the thermal conductivity, mechanical properties, moisture and heat aging resistance and high-temperature resistance of the high-thermal-conductivity polyurethane pouring sealant by introducing the modified polyurethane prepolymer and the modified nitrogen-doped graphene.

The application discloses a kind of functional degradable waterborne polyurethane and its preparation method and application, belong to organic synthesis technical field.The technical problem to be solved is to improve the stability, film-forming property and degradability of waterborne polyurethane.The technical solution points are as follows: a kind of preparation method of functional degradable waterborne polyurethane, comprising the following steps: using dibasic acid as catalyst, epoxy soybean oil and ethylene glycol are reacted to obtain soybean oil-based polyol;Soybean oil-based polyol, polycaprolactone diol and beta-cyclodextrin are mixed, isophorone diisocyanate is added and stirred, 2,2-dimethylol butyric acid and dibutyltin dilaurate are added and stirred, 1,4-butanediol and dimethylacetamide are added and reacted, finally, triethylamine and gamma-aminopropyl triethoxysilane are added and reacted, emulsified with water, dialysis, and obtained.

This invention belongs to the field of carbon materials and discloses a superdispersant for carbon materials and its preparation process, which is prepared from the following raw materials: 35-50 parts of methyl-terminated monofunctional polyetheramine; 20-35 parts of polyester polyol; 1-8 parts of pyromellitic dianhydride or pyromellitic hexacarboxylic acid tricarboxide; 10-20 parts of small molecule polyethylene glycol or difunctional polyetheramine; and 0.1-3 parts of crosslinking agent. 1-3 parts; catalyst 50-2000 ppm; polyester polyol is prepared based on at least three of the following raw materials: phthalic acid, isophthalic acid, terephthalic acid, naphthalenedicarboxylic acid, ethylene glycol, propylene glycol, neopentyl glycol, 2-methyl-1,3-propanediol, and 1,6-hexanediol; the catalyst is tetraisopropyl titanate, tetrabutyl titanate, dibutyltin dilaurate, or other catalysts for polyester polymerization; addressing the technical shortcomings of existing carbon material dispersants such as poor dispersion stability, narrow compatibility, and poor controllability of preparation processes, this method achieves efficient and stable dispersion of carbon materials, while improving the compatibility and industrial feasibility of dispersants.

The application discloses an anti-impact and anti-hole-blocking polyurethane sieve plate and a preparation method thereof, and belongs to the technical field of polyurethane sieve plate preparation, and is used for solving the technical problem that the anti-impact performance and anti-hole-blocking performance of the polyurethane sieve plate in the prior art need to be further improved, and specifically comprises the following steps: stirring polytetrahydrofuran and hydroxyl-terminated polydimethylsiloxane in a reaction kettle protected by a nitrogen atmosphere, heating the reaction kettle to 55-65 DEG C, adding isophorone diisocyanate and dibutyltin dilaurate, heating the reaction kettle to 75-85 DEG C, and keeping stirring for 3-4 h to obtain an isocyanate-terminated prepolymer A component. In the application, the isocyanate-terminated prepolymer A component is first synthesized, then is blended with a coordination curing agent B component, and is poured and cast, and is subjected to stepwise heating, curing and cross-linking to construct the polyurethane sieve plate, so that the anti-impact performance of the polyurethane sieve plate is improved, and the anti-hole-blocking capacity of the polyurethane sieve plate is also improved.

A method for detecting 3-Monochloropropane-1,2-diol (3-MCPD) esters and Glycidyl esters (GE) in a sample containing refined, bleached, and deodorized palm oil (RBDPO) comprising: adding a predetermined amount of a first reagent containing Dibutyltin dilaurate to the sample and forming a mixture; heating the mixture containing the first reagent to a temperature between 55°C and 65°C for a predetermined period to initiate a reaction between the first reagent and the 3-MCPD esters and GE, forming reaction products containing target analytes; adding a second reagent comprising an ethanol-based solvent to selectively dissolve the reaction products and separating them from the RBDPO; wherein a separate ethanol layer is formed, the layer containing the target analytes; adding a third reagent comprising a dye solution to bind with the separated target analytes; wherein adding the third reagent to the separated target analytes, enables detection of the 3-MCPD esters and GE in the sample. A portable test kit is also provided herein.

The application relates to the technical field of lithium battery materials, and particularly discloses a high-solid-content oil-based conductive slurry and a preparation method thereof.The raw materials of the high-solid-content oil-based conductive slurry of the application include carboxylated carbon nanotubes, carboxylated graphene nanosheets, conductive carbon black, 3-isocyanate propyl triethoxysilane, double-hydroxyl-terminated polyvinylidene fluoride oligomer, dibutyltin dilaurate and N-methyl pyrrolidone.Through surface chemical grafting and multi-dimensional carbon material cooperation, the conductive slurry is improved in solid content, dispersion stability, conductive performance, pole piece adhesion and environmental protection economy, etc.The covalent grafting of the polyvinylidene fluoride oligomer simultaneously undertakes four functions of dispersion, stabilization, viscosity reduction and interface fusion.The slurry full component only contains a conductive functional body, a reactive modifier and a solvent, does not introduce any heterogeneous residues, and meets the development direction of greenization and low cost of lithium ion battery manufacturing.

This invention relates to the field of polymer composite materials and surface protection technology, and discloses a corrosion-resistant, antistatic, and wear-resistant nanopolymer coating material and its application. The raw materials and their weight parts of the polymer coating material are as follows: 40-50 parts of hydroxyl-type polyester polyurethane; 15-25 parts of bisphenol A epoxy resin; 0.1-1 parts of nanodiamond powder; 0.5-2 parts of nano silica; 0.5-2 parts of graphene; 0.5-2 parts of polyaniline; 4-8 parts of barite powder; 0.2-0.3 parts of dibutyltin dilaurate; organic... The nano-polymer coating material prepared with 1-3 parts silicone corrosion inhibitor, 0.5-2 parts organic corrosion inhibitor, 10-15 parts aliphatic isocyanate curing agent, 1-3 parts silane coupling agent, 0.5-2 parts high molecular weight polyurethane dispersant, 0.2-0.5 parts polyether modified silicone leveling agent, 0.1-0.3 parts defoamer, and 0.1-0.3 parts ultraviolet absorber can comprehensively resist the erosion of harsh outdoor environments such as humidity, heat, salt spray, and ultraviolet rays, thereby extending the service life and protection period of the coating outdoors.

The application provides a special sealant for simulation cake shaping and a preparation method thereof, and relates to the technical field of adhesives.The raw material composition of the sealant comprises alpha, omega-dihydroxypolydimethylsiloxane, methyltributanone oxime silyl, a catalyst, a composite regulator, edible-grade white oil, gamma-aminopropyltriethoxysilane, nano calcium carbonate loaded blocked isocyanate and deionized water.The catalyst is dibutyltin dilaurate; and the composite regulator is a mixture of modified nano silicon dioxide and an antioxidant.The special sealant for simulation cake shaping prepared by the application has the advantages of short setting time, excellent aging resistance and environmental protection.

This application relates to the field of functional coatings technology, specifically disclosing an anti-aging insulating coating comprising the following components by weight: 28-40 parts polydimethylsiloxane, 15-18 parts aluminum hydroxide, 10-15 parts flame retardant, 5-8 parts silica, 2-4 parts composite anti-aging agent, 3-6 parts methyl tributanone oxime silane, 1.0-2.5 parts vinyl tributanone oxime silane, 0.1-0.4 parts 3-aminopropyltriethoxysilane, 0.3-0.6 parts propyltrimethoxysilane, 0.3-0.5 parts aminoethylaminopropyltrimethoxysilane, 0.2-0.6 parts dibutyltin dilaurate, and 40-46 parts diluent; wherein the composite anti-aging agent is a mixture of hindered amine light stabilizer, inositol hexaphosphate, and stearic acid-modified talc. The anti-aging insulating coating provided by this application exhibits long-term stable insulation performance and excellent anti-aging properties under extreme environments, showing promising application prospects.

This invention relates to the technical field of engineering sealants, and more particularly to a concrete nano-penetrating sealant and its construction method, comprising physically isolated components A and B; component A is a solvent-based penetrating anchoring agent, comprising, by weight percentage: 1%~5% carboxyl-functionalized nano-silica; 8%~20% isobutyltriethoxysilane; 2%~5% octyltriethoxysilane; 2%~8% propylene glycol methyl ether; 0.05%~0.2% dibutyltin dilaurate; the remainder being isopropanol; component B is a water-based functional repair agent, comprising, by weight percentage: 2%~10% cationic nanocapsules; 0.1%~0.5% pH adjuster; 0.2%~1% nonionic surfactant; 0.1%~0.3% preservative; the remainder being deionized water. The carboxyl-functionalized nano-silica in component A carries a negative charge, and the cationic nanocapsules in component B carry a positive charge; the two components are used sequentially during construction to form a composite penetrating sealant with self-healing function, solving the defect of traditional penetrating agents being easily lost with water migration.

This invention belongs to the field of polyurethane elastomer synthesis technology, specifically relating to a method for synthesizing a multifunctional polyurethane elastomer, comprising the following steps: adding polytetrahydrofuran to a four-necked flask, then adding dicyclohexylmethane-4,4'-diisocyanate, and stirring the mixture under a nitrogen atmosphere for 1 hour; finally, adding the catalyst dibutyltin dilaurate and prepolymerizing the mixture for 3 hours to obtain a prepolymer PM-NCO; adding a polymerization inhibitor and tetrahydrofuran to the obtained prepolymer PM-NCO, followed by adding N-(hydroxymethyl)acrylamide until the -NCO peak disappears in the FTIR spectrum to obtain PMN; cooling the reaction to room temperature under a nitrogen atmosphere, and then placing the obtained PMN, lipoic acid, phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide, and diethylaluminum hypophosphite into a vacuum degasser and stirring thoroughly to obtain PMNSx-n; the method for synthesizing a multifunctional polyurethane elastomer provided by this invention can fundamentally solve the contradiction between flame retardant modification and intelligent self-healing properties.

This invention discloses a high-transparency, crack-resistant microcrystalline glass and its preparation method, belonging to the field of microcrystalline glass technology. The microcrystalline glass comprises a microcrystalline glass substrate and a crack-resistant coating. The crack-resistant coating is composed of polyurethane prepolymer, nano-silica, modified organosilicon monomer, small molecule polyol, dibutyltin dilaurate, and a silane coupling agent in specific mass proportions. This invention first synthesizes a modified organosilicon monomer containing a rigid benzoxazole structure and hindered phenolic antioxidant groups through a multi-step reaction, and then prepares the polyurethane prepolymer; next, the components are mixed to form a coating liquid; finally, the microcrystalline glass substrate is surface-activated, coated, and cured. Through the synergistic effect of the components, this invention enables the microcrystalline glass to maintain high transparency while also possessing excellent crack resistance, wear resistance, weather resistance, and hydrophobicity, effectively solving the technical problems of easy cracking, yellowing, and contamination in existing microcrystalline glass.

This invention relates to a method for preparing lithium hexafluorophosphate concentrate, belonging to the technical field of lithium hexafluorophosphate concentrate. The invention involves stirring and filtering anhydrous lithium fluoride and anhydrous hydrofluoric acid to obtain a lithium fluoride-hydrofluoric acid mixture; passing the mixture into a reaction vessel, introducing phosphorus pentafluoride gas, and stirring to react; adding a modified metal ion adsorbent to the reacted solution, stirring and mixing, first passing it through a ceramic membrane filter, then through an ultrafiltration membrane filter, and finally concentrating it in a vacuum concentration device to obtain lithium hexafluorophosphate concentrate; the modified metal ion adsorbent is prepared using D001 macroporous sulfonic acid resin, dichloroethane, ethyl 3-(2-pyrrole)acrylate, a photoinitiator, ethylene sulfonyl chloride, and dibutyltin dilaurate. The lithium hexafluorophosphate prepared by this invention has high purity and low impurity ion content, fully verifying the feasibility and superiority of this invention.

The present invention provides a flame-retardant aqueous polyurethane microfiber based on silicon and a manufacturing process thereof, and belongs to the technical field of polymer materials. In the present invention, a silicon source is first hydrolyzed under alkaline conditions to obtain a silicon dioxide nanosphere, and then the silicon dioxide nanosphere is subjected to silane modification and coupled and modified with various phosphorus-containing compounds to obtain a phosphorus-hybridized silicon-based flame retardant.It is then mixed with isophorone diisocyanate, polytetrahydrofurandiol, dibutyltin dilaurate, dimethylolpropionic acid, and the silicon-based flame retardant to obtain a prepolymer. The prepolymer is emulsified in a dispersant to obtain a silicon-based flame retardant / polyurethane emulsion, and then a specific amount of thickener, defoamer, leveling agent, and color paste, etc., is added. Subsequently, the coating is bonded to the base fabric, cured, and peeled to obtain the silicon-based flame-retardant aqueous polyurethane microfiber. The silicon-based flame-retardant aqueous polyurethane of the present invention achieves excellent mechanical and flame-retardant properties and also exhibits excellent smoke suppression and low toxicity.

The application belongs to the technical field of polyethylene monofilament preparation, and discloses a kind of HDPE high wear-resistant monofilament.The monofilament has three-dimensional network structure formed by silane hydrolysis crosslinking, and the preparation raw materials include, by weight, 100 parts of silane grafted HDPE masterbatch, 0.5-2.0 parts of composite catalyst, 0.2-0.6 parts of wear-resistant synergist and 0.1-0.4 parts of antioxidant.The preparation raw materials of the silane grafted HDPE masterbatch include 100 parts of HDPE resin, 3-8 parts of modified silane monomer, 0.2-0.8 parts of composite initiator, 0.1-0.5 parts of hydrolysis inhibitor and 0.3-0.9 parts of dispersant.Modified silane monomer is compounded by vinyl trimethoxysilane and gamma-methacryloyloxypropyl trimethoxysilane;Composite initiator is compounded by dicumyl peroxide and benzoyl peroxide;Composite catalyst is compounded by dibutyltin dilaurate and stannous octoate;Wear-resistant synergist is compounded by nano-silicon dioxide and polytetrafluoroethylene micro powder.

This application relates to the field of functional coatings technology, specifically disclosing a high-strength insulating coating and its preparation method. The high-strength insulating coating of this application comprises the following components in parts by weight: 30-40 parts of polydimethylsiloxane with a viscosity of 18000-22000 cp, 4-10 parts of silane coupling agent, 0.5-3 parts of composite nanofiller, 15-20 parts of aluminum hydroxide, 10-15 parts of silica, 0.2-0.5 parts of dibutyltin dilaurate, and 40-45 parts of diluent; the composite nanofiller is tungsten oxide, chitosan-modified montmorillonite, and black phosphorus in a weight ratio of 1:(0.1-0.8):(1.5-4). The high-strength insulating coating of this application maintains excellent mechanical strength and film adhesion even under extreme environments such as high temperature and high humidity, effectively solving the problem of performance degradation of existing coatings in complex environments, and is suitable for long-term insulation protection of electrical equipment, wires and cables, and other applications.

The application 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 flame-retardant heat-conducting silica gel insulating coating disclosed by the application comprises the following components: polydimethylsiloxane, aluminum hydroxide, modified nano-aluminum oxide, a phosphorus-nitrogen flame retardant, silicon dioxide, methyl tributyl ketoxime silane, vinyl tributyl ketoxime silane, dibutyltin dilaurate, a diluent, aminopropyl triethoxysilane, propyl trimethoxysilane and ethyl aminopropyl trimethoxysilane; the polydimethylsiloxane is composed of polydimethylsiloxane with a viscosity of 1500 cp and polydimethylsiloxane with a viscosity of 20000 cp. The application finely adjusts the proportions of various functional components, especially optimally combines the polydimethylsiloxane types, the modified nano-aluminum oxide, the flame retardant and the filler, effectively improves the flame retardancy and the heat conductivity of the coating, and meanwhile ensures good insulating property and mechanical property.

This invention belongs to the field of adhesive technology, specifically relating to an environmentally friendly adhesive, its preparation method, and its application. The preparation method of this environmentally friendly adhesive includes the following steps: S1. Under inert gas protection, polybutylene adipate diol, modified carbon nanotubes, and isophorone diisocyanate are mixed, heated, and reacted. Then, dimethylolpropionic acid and dibutyltin dilaurate are added to continue the reaction. After cooling, the pH is adjusted, acetone is added and stirred, and finally, an antibacterial agent and deionized water are added. After emulsification, the acetone is removed to obtain an aqueous carbon nanotube / polyurethane composite emulsion; S2. The aqueous carbon nanotube / polyurethane composite emulsion is mixed with an antifoaming agent, a dispersant, and a leveling agent, and stirred to obtain the final product. The adhesive prepared by this method has low water absorption, excellent bonding performance, and antibacterial and antifungal properties.

The application belongs to the technical field of resin materials for copper-clad plates, and particularly relates to a carbon-hydrogen resin composition for prepreg and a preparation method thereof. The carbon-hydrogen resin composition is prepared from the following raw materials in parts by mass: hyperbranched modified prepolymer resin 90-100 parts, inorganic filler 15-25 parts, silane coupling agent 0.2-0.4 parts, crosslinking agent 10-20 parts, initiator 0.8-1.5 parts, dibutyltin dilaurate 0.1-0.3 parts, antioxidant 0.5-1 part, and toluene 50-80 parts. The carbon-hydrogen resin composition prepared by the application has low dielectricity, high thermal conductivity, high heat resistance, high toughness, and excellent processing forming property.

This invention discloses a superhydrophobic asphalt pavement coating material and its preparation method, belonging to the field of pavement coating technology. The preparation steps of the superhydrophobic asphalt pavement coating material include: S1, reacting polypropylene glycol, hydroxyl-terminated polydimethylsiloxane, 2,2-dimethylolpropionic acid, isophorone diisocyanate, and dibutyltin dilaurate by stirring to obtain a prepolymer; cooling the system and adding perfluorohexylethanol for end-capping reaction; adding triethylamine dropwise, followed by water for emulsification and dispersion to obtain a polyurethane dispersion; S2, adding an active silanol mixture dropwise to an aluminum silicate microsphere suspension, refluxing for 6-10 hours, filtering out the solid, and drying to obtain modified nano-aluminum silicate microspheres; S3, adding the modified aluminum silicate microsphere suspension dropwise to the polyurethane mixture and stirring to obtain the superhydrophobic coating material. The superhydrophobic coating material prepared by this invention meets the superhydrophobic surface standard, has strong anti-corrosion ability, and also helps to improve the anti-skid effect of the pavement.

This invention relates to a salt spray resistant and anti-aging curing coating and its preparation method, belonging to the field of coating technology. The coating includes modified epoxy resin, ternary nanocomposite filler, composite light stabilizer, hydrophobic eutectic solvent, polysiloxane-modified aromatic amine curing agent, and bio-based polyurethane curing agent. The modified epoxy resin is prepared by reacting bisphenol F epoxy resin, KH-560 silane coupling agent, and tetrabutylammonium bromide, followed by the addition of bi-terminated epoxy silicone oil, 3,3'-dithiodipropionic acid, and p-toluenesulfonic acid, and then by adding pentaerythritol phosphate and antioxidant 1010. The polysiloxane-modified aromatic amine curing agent is prepared by reacting m-phenylenediamine as a matrix, KH-560 silane coupling agent, diphenylsilanediol, and dibutyltin dilaurate. The bio-based polyurethane curing agent is prepared by reacting castor oil-modified polyol, isophorone diisocyanate, dibutyltin dilaurate, dimethylolpropionic acid, and trimethylolpropane.

The present application relates to the field of moisture curing adhesive sealing material preparation, and provides a modified polyether glue preparation method based on multi-stage stirring, which realizes uniform dispersion, low water content and stable processing of a high filling system by implementing hierarchical feeding and multi-stage stirring on branched methoxysilane end-capped polyether prepolymer, covalently grafted core-shell filler, additional calcium carbonate and fumed silica, combining with defoaming and dewatering, and adding trimethoxymethylsilane and additional dibutyltin dilaurate after, solves the problem that low viscosity, good dispersibility, wide processing window, storage stability, modulus and flexibility after curing are difficult to be considered under high filling conditions, and can be used for preparation of one-component moisture curing adhesive sealing material.

The application discloses a preparation method of a self-reinforced and self-repairing polyurethane film suitable for an ocean extreme environment, and the preparation steps are as follows: reacting diisocyanate, high-molecular dihydric alcohol, 1,1'-ferrocene dimethyl alcohol, dibutyl tin dilaurate and a small-molecule chain extender to prepare a polyurethane with a force response function; reacting diisocyanate, high-molecular dihydric alcohol, a chain extender containing a carboxyl group or a catechol group and a small-molecule chain extender to prepare a polyurethane with a metal ion coordination function; and blending the polyurethane with the force response function and the polyurethane with the metal ion coordination function at a mass ratio of 1:1 to 1:2 to prepare the self-reinforced and self-repairing polyurethane film suitable for the ocean extreme environment. The mechanical properties and the self-repairing properties of the polyurethane film can be regulated by adjusting the amount of the chain extender containing the carboxyl group or the catechol group, and the mechanical properties of the polyurethane film prepared by the application can be improved in a self-crosslinking reaction process caused by repeated mechanical force.

The application discloses a preparation method of a biomass-based adsorption material, and belongs to the technical field of adsorption, and is used for solving at least one problem that gallium extraction in coal gangue acid leaching liquor introduces other metal ion impurities, needs a large amount of organic solvents, requires a high temperature, and straw pre-hydrolysis is poor, so that the biomass-based adsorption material cannot be used in the preparation of the biomass-based adsorption material. The preparation method comprises the following steps: pre-hydrolyzing straw raw materials, mixing and stirring the hydrolyzed straw, glycerol, polyethylene glycol and concentrated sulfuric acid, and then heating and reacting to obtain a biomass polyol; mixing triethanolamine, ionized water, petroleum-based polyether polyol and dimethyl silicone oil to obtain a first mixed solution, mixing the biomass polyol, polyether polyol, toluene-2,4-diisocyanate and dibutyltin dilaurate to obtain a second mixed solution; and mixing and reacting the first mixed solution and the second mixed solution to obtain the biomass-based adsorption material. The application can be used for the preparation of the biomass-based adsorption material.

The present application relates to the technical field of textile fabric, and discloses a multifunctional composite acrylic fabric and a preparation method thereof, the multifunctional composite acrylic fabric is obtained by treating acrylic fabric with sodium hydroxide solution and finishing liquid in sequence; the finishing liquid is prepared from deionized water, a crosslinking agent, nano silicon dioxide, perfluorohexyl ethyl acrylate, butyl acrylate, polyvinyl pyrrolidone, fatty alcohol polyoxyethylene ether, quaternary ammonium salt modified nano zinc oxide and ammonium persulfate aqueous solution; the quaternary ammonium salt modified nano zinc oxide is prepared from ethanol aqueous solution, nano zinc oxide, gamma-methacryloxypropyl trimethoxysilane, hexadecyl dimethyl allyl ammonium chloride aqueous solution and ammonium persulfate; and the crosslinking agent is prepared from hydroxyl silicone oil, isophorone diisocyanate, dibutyl tin dilaurate catalyst and methanol; the present application has good wear resistance, waterproofness and antibacterial property.

The present application relates to the technical field of TPU foaming material, and discloses a low-temperature-resistant flame-retardant TPU foaming material and a preparation method thereof, which comprises the following raw materials: TPU prepolymer, polytetrahydrofuran ether glycol, diphenyl methane diisocyanate, isophorone diisocyanate, dibutyl tin dilaurate, a composite flame-retardant system, a low-temperature modifier, a crosslinking agent, a lubricant, an antioxidant, an ultraviolet absorber, and a solvent (anhydrous ethanol). The composite flame-retardant system containing phosphorus and a benzoxazine ring is designed, and a wet gel is prepared by a sol-gel method to interpenetrate and crosslink with the TPU prepolymer, so that a dual-pore structure coexisting microporous and nanometer aerogel pores is constructed. Significant technical progress is achieved in terms of flame retardation, smoke suppression, low-temperature resistance, lightweight heat insulation and the like, and the present application is suitable for the fields of aerospace, cold chain transportation, building thermal insulation and the like which have strict requirements for fire safety and adaptability to extremely cold environments.

This invention discloses a wet-slip polyethylene overhead insulated conductor using a plasma surface treatment-three-layer co-extrusion process, belonging to the technical field of insulated conductors. The wet-slip polyethylene overhead insulated conductor comprises, from the inside out, a conductor and an insulation layer. The insulation layer adopts a three-layer co-extrusion structure, consisting of a core layer, a transition layer, and a surface functional layer. Both the transition layer and the surface functional layer are made by blending functional masterbatch with cross-linked polyethylene. The functional masterbatch includes the following components: modified molybdenum disulfide filler, low-density polyethylene, vinyltrimethoxysilane, dicumyl peroxide, dibutyltin dilaurate, antioxidant 1010, and stearic acid. Through the synergistic effect of the modified filler and the supporting process, this invention maintains a stable hydrophobic effect even after long-term aging, effectively blocking moisture intrusion, improving aging resistance, and enhancing the stability and service life of the polyethylene overhead insulated conductor in outdoor operations.