145 results about "Vinyltriethoxysilane" patented technology

The invention relates to a polymer binder for a sulfide solid-state battery as well as a preparation method and application of the polymer binder. The binding agent is formed by copolymerizing vinyl triethoxy silane, 4-vinyl phenylboronic acid lithium and styrene. Silane groups are introduced, the interface adhesiveness with sulfide electrolyte is enhanced through the coupling effect of the silane groups, meanwhile, water in a system is consumed through a condensation reaction, and the water content of an electrolyte membrane is reduced; 4-vinyl phenylboronic acid lithium provides dissociation lithium ions, the ionic conductivity of the binder is improved, and the negative influence on the conductivity of sulfide electrolyte is reduced; the styrene group improves the solubility of the binder in a non-polar solvent. The binder can be dissolved in solvents such as toluene, xylene and the like, and is mixed with sulfide electrolyte to form a film through a wet coating process, and the process compatibility is high. The binder disclosed by the invention has the characteristics of high cohesiveness, ionic conductivity and low water content, and the interface stability and electrochemical performance of the sulfide solid-state battery can be remarkably improved.

The invention relates to the field of coatings, and discloses an outer wall light radiation heat preservation and heat insulation decorative sheet and a preparation method thereof.A radiation refrigeration layer on the surface of the outer wall light radiation heat preservation and heat insulation decorative sheet comprises modified acrylate resin, silicon dioxide, ground calcium carbonate, talcum powder, modified hollow glass beads and auxiliaries; the modified acrylate resin is prepared by copolymerizing perfluorooctyl ethyl acrylate, methyl methacrylate, modified isocyano ethyl methacrylate and vinyltriethoxysilane, and the modified isocyano ethyl methacrylate is prepared by using salicylaldehyde and benzothiazole-2-formaldehyde as well as 1, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate as an initiator and using 2, 3, 4-trimethyl-1, 3-pentanediol monoisobutyrate as an initiator. The preparation method comprises the following steps: reacting amino groups at two ends of 1, 5-naphthylenediamine with DOPO, carrying out nucleophilic addition reaction with DOPO, and grafting with isocyano ethyl methacrylate. The modified hollow glass beads are prepared by using tetrabutyl titanate as a titanium source through a sol-gel method, and the prepared radiation refrigeration layer has the super-amphiphobic self-cleaning effect, the radiation refrigeration effect is good, and meanwhile the flame retardant property and the antibacterial effect are excellent.

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

The invention belongs to the field of preparation of soil conditioners, and particularly relates to a soil loosening and root promoting soil conditioner and a preparation method thereof. A polymer formed by vinyltriethoxysilane, polyacrylic acid and coumarin under the catalytic action of citric acid is mixed with porous powder obtained after crushing and nutrient organic matter, and freeze-drying is performed to obtain the soil-loosening improved fermentation substrate which can be slowly released in soil; polyaspartic acid and acetylchitosamine are cross-linked under the catalytic action of N-hydroxysuccinimide, root-promoting nutrition powder and auxiliary root-promoting components are mixed, and the obtained composite root-promoting agent can significantly promote the growth of plant root systems; a porous structure contained in the protective stability maintaining agent can provide a relatively stable microenvironment for effective components, and the soil loosening and root promoting agent is mixed with the soil loosening and improving fermentation substrate and the composite root promoting agent, so that the prepared soil loosening and root promoting soil conditioner is remarkable in soil loosening and root promoting effect, long-acting and stable, small in dosage, obvious in effect and stable in conditioning effect after being stored.

The invention discloses a method for improving the performance of recycled aggregate concrete, and belongs to the technical field of building materials. The preparation method comprises the following steps: preparing a modified solution which is compounded by double components of gamma-methacryloxy propyl trimethoxy silane and vinyl triethoxy silane; carrying out surface modification on the recycled aggregate by adopting a graded pre-wetting-spraying composite modification method; preparing a slag powder-fly ash-nano silicon dioxide ternary composite admixture; preparing a concrete mixture according to the mixing ratio; through surface modification of the silane coupling agent and cooperation of the composite admixture, the problems of poor workability and low strength of the concrete caused by high water absorption of the recycled aggregate are effectively solved, the 28d compressive strength of the prepared concrete is improved by 20-30%, the anti-freezing grade reaches F200, and the shrinkage rate is reduced by 15-25%.

The invention belongs to the technical field of curing agents, and particularly discloses a graphene composite soil curing agent and a preparation method and application thereof. The graphene composite soil stabilizer is prepared from the following raw materials in percentage by mass: 20 to 30 percent of cement, 10 to 20 percent of fly ash, 10 to 20 percent of slag, 0.5 to 3 percent of graphene, 0.5 to 0.1 percent of modified basalt fiber, 5 to 10 percent of alkaline excitant, 15 to 20 percent of early strength agent, 10 to 15 percent of antifreeze agent, 5 to 10 percent of dispersing agent, 0.3 to 0.8 percent of anti-cracking agent and the balance of water. The preparation method comprises the following steps: performing vinyltriethoxysilane modification on the surface of a basalt fiber, performing acrylic acid modification on hydroxylated montmorillonite, and performing crosslinking on the modified basalt fiber and the hydroxylated montmorillonite under the action of an initiator to obtain the modified basalt fiber. The prepared graphene composite soil stabilizer is good in curing effect, and the unconfined compressive strength, the permeability coefficient and the freeze-thaw stability of cured soil are remarkably improved.

The invention relates to the field of coatings, and discloses a self-cleaning nano-coating glass plate and a preparation method and application thereof.The nano-coating is prepared from organic silicon resin, epoxy resin, modified nano titanium dioxide, long-chain alkyl methyl silicone oil, a curing agent and a diluent; the modified nano titanium dioxide is prepared by grafting a modified silane coupling agent and nano titanium dioxide, wherein the modified silane coupling agent is prepared by reacting a modified phosphorus-containing antibacterial monomer with vinyltriethoxysilane; the modified phosphorus-containing antibacterial monomer is prepared by reacting eugenol with N-bromosuccinimide, then reacting with 2-amino-4-methylthiazole, further reacting with diphenyl phosphinyl chloride, and reacting the obtained phosphorus-containing antibacterial monomer with 1, 1, 3, 3-tetramethyldisiloxane; the long-chain alkyl methyl silicone oil is prepared by using octamethylcyclotetrasiloxane, dodecyl methyl dimethoxy silane and hexamethyldisiloxane as raw materials, and the prepared nano coating has a super-hydrophobic surface and also has excellent antibacterial activity, wear resistance and flame retardance.

The invention discloses a high-performance film for an automobile touch screen and a preparation method of the high-performance film, and relates to the technical field of touch screen films. According to the preparation method, 3-chloropropyltriethoxysilane reacts with N, N-dimethylethanolamine, quaternary ammonium salt groups are introduced to nano silicon dioxide particles, the nano silicon dioxide particles are endowed with antistatic and antibacterial activity, then through polycondensation and hydrolysis reaction of vinyltriethoxysilane, the dispersity and compatibility of the nano silicon dioxide particles in a polymer are improved, the mechanical strength of a coating is enhanced, agglomeration is avoided, and the anti-static and antibacterial properties of the coating are improved. Meanwhile, constructing a photo-crosslinking network by using polyethylene glycol diacrylate; the copolymer contains fluorine, hindered amine and other groups, and forms another network through the cross-linking agent to provide an anchoring frame for functional groups, so that the coating realizes long-acting synergy of antistatic, anti-ultraviolet, anti-fingerprint and other functions in an automobile environment.

The invention relates to the technical field of high polymer materials, and provides fireproof flame-retardant ceramic silicone rubber and a preparation method thereof. The fireproof flame-retardant ceramic silicone rubber is prepared from, by mass, 100 parts of silicone rubber, 5-20 parts of fumed silica, 10-65 parts of a modified flame retardant, 20-50 parts of ceramic powder, 5-20 parts of a fluxing agent, 0.5-2 parts of a vulcanizing agent and 1-7 parts of a coupling agent, and the modified flame retardant is prepared from butyl acrylate-sodium p-styrenesulfonate-vinyltriethoxysilane copolymer and an inorganic flame retardant. According to the technical scheme, the problems that in the prior art, the compatibility of the inorganic flame retardant and the silicone rubber is poor, and consequently the flame retardant effect and the mechanical property of the ceramic silicone rubber are poor are solved.

The application belongs to the technical field of polymer materials, and proposes a high-adhesion-strength flame-retardant waterproof composite board for tunnels and a preparation method and application thereof, which comprises: a, a waterproof board layer, raw materials of which include a flame retardant A; b, a polyurethane layer, which is sprayed on the surface of the waterproof board layer and is prepared from polyols and isocyanate at an isocyanate index R=1-1.1, wherein the polyols include a chain extender, a foaming agent, a foam stabilizer, a catalyst, a polyether polyol, water and a flame retardant B; wherein the flame retardant A is microencapsulated red phosphorus modified by vinyl triethoxysilane, and the flame retardant B is microencapsulated red phosphorus modified by γ-aminopropyl triethoxysilane. Through the above technical scheme, the problem of poor adhesion strength between the waterproof board and the polyurethane in the composite board and poor flame-retardant performance of the waterproof composite board in the prior art is solved.

The invention relates to the technical field of high-molecular polyethylene, and particularly discloses a PE-based nano high-thermal-conductivity composite material and a pipe preparation process, the PE-based nano high-thermal-conductivity composite material is prepared from the following raw materials: high-density polyethylene, linear low-density polyethylene, an ethylene-octylene copolymer, a modified carbon nanotube, a core-shell oxide, a graphene nanosheet, an interface compatilizer, an antioxidant and a cross-linking agent; the modified carbon nano tube is obtained by depositing a SiO2 layer on the surface of a carbon nano tube and then grafting vinyltriethoxysilane; a core layer of the core-shell oxide is zirconium oxide, a shell layer of the core-shell oxide is aluminum oxide, the surface of the zirconium oxide of the core layer is coated with a zinc stearate hydrophobic layer, and the surface of the aluminum oxide of the shell layer is grafted with methacryloxypropyltrimethoxysilane. According to the invention, through compounding of the modified carbon nanotubes, the core-shell structure zirconium oxide-aluminum oxide and the graphene nanosheets, a three-dimensional heat-conducting network is constructed in a core layer, filler agglomeration is inhibited, and interface thermal resistance is reduced.

The color migration prevention polyurethane composite film is prepared from the following raw materials in parts by weight: 40 to 50 parts of crystalline modified polyurethane, 30 to 40 parts of waterborne polyurethane, 10 to 15 parts of vinyltriethoxysilane, 5 to 8 parts of graphene, 5 to 8 parts of color fixing agent, 6 to 8 parts of toner and 1 to 3 parts of silicon dioxide. According to the color migration prevention polyurethane composite film and the preparation method thereof, the obtained polyurethane composite film has excellent color migration prevention and washing resistance effects.

The invention belongs to the technical field of building materials, and particularly relates to a silane modified starch-based polycarboxylate superplasticizer and a preparation method thereof. The water reducing agent is prepared by taking renewable sulfonated starch as a raw material, performing graft modification through vinyltriethoxysilane (A151), introducing active double bonds into starch molecules, and then copolymerizing with monomers such as isopentenol polyoxyethylene ether (TPEG) and acrylic acid. Compared with the prior art, the mixing amount of the vinyltriethoxysilane (A151) is only 1%-5% of the mass fraction of the acrylic acid, the mixing amount is low, and the cost is saved; the water reducing and dispersing performance of the starch-based polycarboxylic acid water reducing agent is improved, and a certain viscosity reducing effect is achieved.

The present invention relates to the field of copper clad laminates, and discloses a copper clad laminate with low dielectric constant and high performance and a preparation method thereof. The specific steps are as follows: taking epoxy resin, phenolic resin, polyphenylene ether modified resin, modified nano-silica, etc. and mixing them to obtain a resin glue solution; impregnating glass fiber cloth in the resin glue solution to obtain a prepreg; taking the prepregs and laminating them and hot pressing them with copper foil; the polyphenylene ether modified resin includes epoxy resin, diallyl cyanate, and a fluorinated polyphenylene ether resin prepared by reacting polyphenylene ether, bisphenol AF, and benzoyl peroxide; the modified nano-silica is prepared by reacting allyl glycidyl ether and vinyltriethoxysilane with phenyltris(dimethylsilyl)silane, and then grafting it with a phosphorus-containing intermediate to form a modified additive, and grafting the modified additive with nano-silica. The phosphorus-containing intermediate is prepared by reacting phenylphosphoryl dichloride and eugenol. A copper clad laminate with high flame retardancy, high peel strength, and heat-resistant low dielectric constant is prepared.

The invention relates to the technical field of lithium ion battery diaphragms, in particular to a high-temperature-resistant modified acrylic acid composite material and a preparation method thereof. The high-temperature-resistant modified acrylic acid composite material comprises a polypropylene diaphragm and coating slurry coated on at least one side of the polypropylene diaphragm, the coating slurry is prepared from the following raw materials: n-butyl acrylate, methyl methacrylate, ethyl acrylate, toluene diisocynate, methacrylic anhydride, graphene oxide, nanoscale ceramic powder, polyvinylidene fluoride, vinyltriethoxysilane, polysiloxane, a dispersing agent, a catalyst and a solvent. According to the invention, high safety can be brought to the battery, high temperature resistance is realized, the diaphragm can tolerate high temperature, the service life of the battery is obviously prolonged, and the safety is greatly improved.

The invention belongs to the technical field of polymer materials, and provides a high-bonding-strength flame-retardant waterproof composite board for a tunnel and a preparation method and application of the high-bonding-strength flame-retardant waterproof composite board for the tunnel. The polyurethane layer is sprayed on the surface of the waterproof board layer and is prepared from polyol and isocyanate according to the proportion that the isocyanate index R is equal to 1-1.1, and the polyol comprises a chain extender, a foaming agent, a foam stabilizer, a catalyst, polyether polyol, water and a flame retardant B; wherein the flame retardant A is microencapsulated red phosphorus modified by vinyltriethoxysilane, and the flame retardant B is microencapsulated red phosphorus modified by gamma-aminopropyltriethoxysilane. By means of the technical scheme, the problems that in the prior art, the bonding strength of a waterproof board and polyurethane in a composite board is poor, and meanwhile the flame retardant property of the waterproof composite board is poor are solved.

The invention discloses a method for preparing a low-carbon waste incineration fly ash (MSWIFA) cement-based material through carbonization of a modified nano solution and application of the MSWIFA cement-based material, according to the method, nano silicon dioxide is dispersed in a VTES (vinyltriethoxysilane) ethanol solution to serve as a medium for carbonization modification of the MSWIFA, and meanwhile the carbonization degree of the MSWIFA is improved through an ethanolamine solution. The carbonized and modified MSWIFA is used as a supplementary cementing material to be doped into the cement-based material, so that the compressive strength of the cement-based material can be improved, and heavy metal ions in the MSWIFA can be consolidated. Most importantly, the carbonization method provided by the invention is superior to the traditional carbonization method, the steps of suction filtration, drying and the like are not needed in the carbonization modification process, fine-particle micro powder is reserved, the energy consumption in the carbonization process is reduced, the time is saved, and the carbonization efficiency is improved. The building material produced by using the modified MSWIFA reduces environmental pollution, has good thermal insulation characteristics, and achieves the goals of environmental protection, energy conservation and emission reduction.

The invention relates to the technical field of cables, and provides a corrosion-resistant aerial insulated cable and a manufacturing method thereof. A corrosion-resistant overhead insulated cable sequentially comprises a conductor, a shielding layer and an insulating layer from inside to outside, and the insulating layer is prepared from the following raw materials in parts by weight: 65-75 parts of high-density polyethylene, 5-7 parts of modified kaolin, 13-17 parts of ethylene-tetrafluoroethylene copolymer, 0.5-2 parts of antioxidant, 1-3 parts of plasticizer, 8-10 parts of flame retardant and 0.5-1.5 parts of lubricant; wherein the modified kaolin is prepared by the following steps: firstly, modifying kaolin by vinyltriethoxysilane for the first time to obtain silanized kaolin, and then modifying the silanized kaolin by lauryl amine dipropylidene diamine and gamma-glycidyl ether oxyethyl trimethoxysilane for the second time. According to the technical scheme, the problem of poor corrosion resistance of the overhead insulated cable in the prior art is solved.

The present invention relates to the field of inks, specifically to a high-adhesion magnetic ink, its preparation method and application in chip production. The preparation method of the high-adhesion magnetic ink comprises the following steps: first, synthesize sodium carboxyl-terminated hyperbranched polyester, and then load nano-ferroferric oxide thereon to obtain hyperbranched polyester loaded with nano-ferroferric oxide; prepare a silicon-acrylic prepolymer using acrylate compounds, vinyltriethoxysilane, oleic acid, and linoleic acid as monomers, then synthesize a basic alkyd resin, and then compound the basic alkyd resin, the silicon-acrylic prepolymer, the hyperbranched polyester loaded with nano-ferroferric oxide, triethylamine, ethylene glycol dibutyl ether, ethanol, and water to prepare the high-adhesion magnetic ink. The ink can be cured by heating at 130 °C for 10 min, and has the advantages of strong adhesion fastness and good magnetic separation performance, and can be used to mark defective crystal grains, and then the defective crystal grains can be separated by magnetic separation technology.

The invention provides a preparation process of a PET (Polyethylene Terephthalate) film laser printing coating, and belongs to the technical field of laser printing coatings. 72-75 parts of water-based acrylic resin emulsion, 2-2.5 parts of polydimethylsiloxane, 5-7 parts of silicon-doped titanium dioxide, 1-2 parts of a silane coupling agent KH-570, 2-3 parts of a cross-linking agent vinyltriethoxysilane, 2-4 parts of a coalescing agent propylene glycol phenyl ether, 0.6-0.8 part of a photoinitiator and 0.3-0.5 part of a defoaming agent are put into a double-screw high-speed dispersion machine to be dispersed and left to stand, and a mixture is obtained; s2, carrying out corona treatment on the PET film to obtain a pretreated PET film; and S3, uniformly coating the pretreated PET film obtained in S2 with the mixture obtained in S1, and performing curing treatment to obtain the PET film laser printing coating. The heat resistance of the prepared PET film laser printing coating and the adsorption capacity of the PET film laser printing coating to carbon powder can be effectively improved.

The invention relates to a continuous casting-continuous extrusion short-process forming process for a large-width copper plate strip, and belongs to the technical field of metal processing. The method comprises the following steps: preheating and drying high-purity cathode copper, melting in a smelting device, covering the surface of molten copper with charcoal and graphite flakes, carrying out on-line degassing, deoxidizing and stirring, upwards leading a copper rod by adopting a traction unit, and extruding between an extrusion wheel and a compaction wheel; a four-high rolling mill is used for rolling; cleaning and passivating the annealed copper plate strip, spraying a lanthanum (III)-containing silane-benzimidazole lubricant solution on the surface of the copper plate strip, and drying; slitting to obtain a large-width copper plate strip; the lanthanum (III)-silane-benzimidazole lubricant is prepared from vinyltriethoxysilane, deionized water, ethanol, benzimidazole and lanthanum nitrate hexahydrate (III), and the lanthanum (III)-silane-benzimidazole lubricant is prepared from the vinyltriethoxysilane, the deionized water, the ethanol, the benzimidazole and the lanthanum nitrate hexahydrate (III); the prepared copper plate strip is high in purity, low in oxygen content, high in conductivity and excellent in mechanical property, and the technical requirements of the high-end field for the high-purity high-conductivity oxygen-free copper plate strip are met.

The invention belongs to the technical field of resin lenses, and particularly relates to a high-hardness resin lens and a preparation method thereof. The lens matrix is prepared from the following components in parts by weight: 50 to 60 parts of bisphenol A epoxy acrylate, 3 to 5 parts of modified nano zirconium oxide, 30 to 35 parts of tripropylene glycol diacrylate, 0.5 to 1 part of an initiator azodiisobutyronitrile, 1 to 1.5 parts of a release agent and 3 to 3.5 parts of an ultraviolet light absorber; the wear-resistant film layer is prepared from the following components in parts by weight: 20 to 30 parts of sulfobetaine methacrylate, 10 to 15 parts of vinyltriethoxysilane, 3 to 8 parts of 2-hydroxy-4-acryloyloxybenzophenone, and 0.3 to 0.5 part of azodiisobutyronitrile. According to the invention, the wear-resistant film is coated outside the lens base body, so that the bonding strength of the wear-resistant film and the lens base body is improved.

The present application relates to a kind of monodisperse core-shell type hybrid silica microspheres containing vinyl shell and its preparation and application. Specifically, using "two-phase method" strategy, monodisperse solid silica microspheres are used as matrix, vinyl triethoxysilane and tetraethyl orthosilicate are used as raw materials, lauryl amide propyl betaine and sodium subtiliporin are used as double-template pore-forming agent, under the catalysis of urea, sol-gel reaction occurs, a layer of porous hybrid shell containing vinyl functional group is constructed on the surface of solid silica microspheres, and core-shell type silica hybrid microspheres are formed. Because the shell contains a large number of vinyl functional groups, after hydrophilic modification with captopril, it is used as the adsorbent of hydrophilic interaction chromatography, and is applied to the selective enrichment of biological samples. The core-shell type silica hybrid microspheres prepared in the present application have uniform morphology, good monodispersity, and rich vinyl functional groups on the surface, which are easy to modify and apply subsequently.

This invention relates to the field of metal protection and lubrication materials, and discloses a silent, vibration-damping, film-forming, long-lasting rust-preventive oil for bearings and its preparation method. The rust-preventive oil comprises a base oil, a dynamic borate ester-organosilicon-tungsten bridging synergistic modifier, itaconic acid hydrazine, a dimer ester, calcium petroleum sulfonate, polyisobutylene, a phosphate extreme pressure agent, and an antioxidant. The dynamic borate ester-organosilicon-tungsten bridging synergistic modifier forms a reversible dynamic covalent network of borate esters with phenylboronic acid through a diol-based compound, and then undergoes a confined sol-gel polymerization reaction with vinyltriethoxysilane to form silicon-oxygen segments. These segments are then coordinated and bridged by tungstate and diol groups to construct a three-dimensional coupled structure. The rust-preventive oil of this invention has advantages such as high film density, strong adhesion, good vibration damping and noise reduction effect, and strong rust prevention durability, making it suitable for the storage and operational protection of high-end bearings.

The application relates to the technical field of high polymer materials, and discloses a fireproof and flame-retardant ceramifiable silicone rubber and a preparation method thereof. The fireproof and flame-retardant ceramifiable silicone rubber is prepared from the following components in parts by mass: 100 parts of silicone rubber, 5-20 parts of fumed white carbon black, 10-65 parts of modified flame retardant, 20-50 parts of ceramic powder, 5-20 parts of fluxing agent, 0.5-2 parts of vulcanizing agent and 1-7 parts of coupling agent; the raw material of the modified flame retardant comprises butyl acrylate-styrene sodium sulfonate-vinyl triethoxysilane copolymer and inorganic flame retardant. Through the technical scheme, the problem that the inorganic flame retardant and the silicone rubber have poor compatibility in the related art, leading to poor flame-retardant effect and mechanical property of the ceramifiable silicone rubber, is solved.

The invention discloses a SiOC aerogel-molecular sieve composite material with a coating structure for protecting a methane gas sensor and a preparation method of the SiOC aerogel-molecular sieve composite material, the SiOC aerogel-molecular sieve composite material adopts a structural design of coating a molecular sieve with SiOC aerogel, and the inner core structure adopts a molecular sieve with micron-scale granularity and nano-scale internal pores; and the SiOC aerogel coated outside is prepared by adopting methyl trimethoxy silane and vinyl triethoxy silane as silicon sources and adopting a sol-gel method. On one hand, defects caused in the preparation process of the aerogel can be reduced as much as possible, on the other hand, interface contact between the aerogel and the molecular sieve can be effectively ensured, the specific surface area and the micropore porosity of the aerogel are further improved while the structural stability of the aerogel is ensured, and the preparation method is simple and convenient. Therefore, the SiOC aerogel and molecular sieve composite material has better gas adsorption and filtration capacity and can be stably applied to a methane gas sensor protection material.

The invention relates to the field of solid wood composite floors, and discloses a waterproof and wear-resistant solid wood floor and a preparation method thereof.The waterproof and wear-resistant solid wood floor comprises a solid wood floor body and waterproof and wear-resistant paint, and the waterproof and wear-resistant paint comprises modified acrylic emulsion, a modified additive and auxiliaries; the modified acrylic emulsion comprises methyl methacrylate, butyl acrylate, modified attapulgite and the like; the modified attapulgite is prepared by coating attapulgite with zinc molybdate by using a precipitation method and then grafting with a modified silane coupling agent prepared by reacting acrylamide and 3-(2, 3-epoxypropoxy) propyltrimethoxysilane; according to the modified additive, pentaerythritol phosphate is used for replacing phosphorus oxychloride and then continues to be substituted with N, N '-bis-(2, 2, 6, 6-tetramethyl-4-piperidyl)-1, 6-hexamethylenediamine, and then tetraethoxysilane and vinyltriethoxysilane are used for modifying an obtained modified flame-retardant intermediate, so that the flame-retardant flame-retardant material is prepared. According to the invention, the solid wood floor is endowed with high hardness, water resistance and wear resistance through the waterproof wear-resistant coating, and has excellent flame-retardant effect and ultraviolet aging resistance.

This invention discloses a high- and low-temperature resistant and anti-aging building wire and its preparation method, relating to the field of wire and cable technology. The high- and low-temperature resistant and anti-aging building wire of this invention comprises: a wire core; and a modified polyvinyl chloride (PVC) insulation layer covering the wire core; wherein the modified PVC insulation layer comprises at least the following raw materials in parts by weight: 80-100 parts of PVC; 10-20 parts of hydrogenated nitrile rubber; 5-15 parts of PVC-g-polyacrylic acid graft copolymer; 10-25 parts of vinyltriethoxysilane coupling agent modified boron nitride / magnesium hydroxide composite flame retardant; 3-8 parts of linoleic acid modified polyhedral oligomeric silsesquioxane; 4-8 parts of heat stabilizer; 3-6 parts of plasticizer; 1.5-3.5 parts of lubricant; 0.5-2 parts of antioxidant; and 0.3-1.5 parts of ultraviolet absorber. The building wire prepared by this invention has wide temperature range adaptability, aging resistance, and flame-retardant and smoke-suppressing properties.

This invention discloses a high-temperature resistant flat cable and its manufacturing process, comprising: a flat aluminum alloy busbar, an insulation layer covering the outer surface of the flat aluminum alloy busbar, and a flat aluminum alloy tube covering the outer surface of the insulation layer; the insulation layer is formed by extruding cable material, and the cable material is composed of the following components in parts by weight: 100 parts of polyethylene resin, 1-3 parts of silane crosslinking agent, 0.5-1 parts of glycidyl methacrylate, 0.1-1.5 parts of antioxidant, 0.05-0.2 parts of initiator, 0.2-0.5 parts of tetrabutyl zirconate, and 0.1-0.3 parts of triallyl isocyanurate; the silane crosslinking agent is vinyltrimethoxysilane or vinyltriethoxysilane, and the initiator is at least one of dicumyl peroxide, methyl ethyl ketone peroxide, or benzoyl peroxide. The insulation layer of the high-temperature resistant flat cable of this invention has a breakage elongation change rate of 10~20% after aging at 125℃, and an elongation rate of 30~55% under thermal extension load, thereby improving the high-temperature resistance and service life of the flat cable.

This invention relates to the field of flocculant technology, and discloses a polyacrylamide flocculant for sludge treatment and its preparation process. The polyacrylamide flocculant for sludge treatment prepared by this invention comprises the following raw materials: water, modified starch, prepolymer, and bromoethane; the prepolymer includes butyl acrylate, water, sodium dodecyl sulfate, acrylamide, N,N-methylenebisacrylamide, glycidyl methacrylate, modified silica, ammonium persulfate, and sodium bisulfite; the modified silica includes vinyltriethoxysilane-modified nano silica; the modified starch includes corn starch, N,N'-(1,2-ethanediyl)bisaspartic acid, sodium alginate, water, sodium sulfate, and phosphorus oxychloride; the obtained polyacrylamide flocculant for sludge treatment has a high molecular weight hyperbranched structure and good flocculation effect.