113 results about "Vinyltriethoxysilane" patented technology

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 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 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 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 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.

This invention discloses a high-adhesion optical adhesive for extreme conditions, its preparation method, and its application, belonging to the field of optical adhesive technology. It comprises the following components in parts by weight: 20-30 parts of 2-methyl-6-methylene-1,7-octadien-3-one, 15-25 parts of 1,4-butanediol dimethacrylate, 15-25 parts of tetraethylene glycol dimethacrylate, 5-10 parts of α-methacrylic acid, 5-10 parts of hydroxyethyl methacrylate, 2-5 parts of vinyltriethoxysilane, 0.1-0.5 parts of 1-hydroxycyclohexylphenyl ketone, 0.1-0.5 parts of 2-hydroxy-2-methyl-1-phenyl-1-propanone, and 0.3-0.5 parts of 1-[9-ethyl-6-(2-methylbenzoyl)-9H-carbazole-3-yl]acetone-1-(O-acetyloxime). The optical adhesive of the present invention has excellent bonding performance and can prevent the bonded components from debonding and causing cohesive failure at the bonding joint in humid, steamy, or chemical solvent environments.

The invention relates to the field of lithium ion battery negative electrode materials, and discloses coated asphalt and a preparation method thereof.The preparation method comprises the steps that ethylene tar and catalytic slurry oil are sequentially subjected to mixing, sedimentation and heating treatment, and a pretreatment product is obtained; sequentially carrying out oxidation cross-linking catalytic reaction and polycondensation catalytic reaction on the pretreated product to obtain a crude asphalt product; the crude asphalt product is extracted, the coated asphalt is obtained, the temperature of the oxidation cross-linking catalytic reaction is 250-320 DEG C, and the time is 3-5 h; the temperature of the polycondensation catalytic reaction is 320-360 DEG C, and the time is 6-10 hours; the catalyst for the oxidation crosslinking catalytic reaction comprises vinyltriethoxysilane or dicumyl peroxide. The actual specific capacity and the cycling stability of the battery negative electrode material can be improved.

The invention relates to the technical field of warming patches, in particular to a herbal warming moxibustion warming patch and a preparation method thereof.The herbal warming moxibustion warming patch is characterized in that a printed non-woven fabric, a heating layer, a herbal layer and a skin-friendly non-woven fabric are sequentially compounded from top to bottom to obtain a warming patch body, and when the warming patch is used, a self-adhesive moistening bag is attached to the warming patch body; the graphene non-woven fabric and the skin-friendly non-woven fabric are subjected to antibacterial finishing liquid modification treatment, so that the comfort and the safety of the warm paste are improved; treating the non-woven fabric by using vinyltriethoxysilane, and introducing double bonds; composite microcapsules, carboxylated chitosan, a penetrating agent, an initiator and deionized water are mixed to serve as antibacterial finishing liquid, the antibacterial durability of the warm paste is improved, the safety of the warm paste is greatly improved, and the service life of the warm paste is greatly prolonged.

The preparation method comprises the following steps: S1, in a nitrogen atmosphere, dissolving vinyltriethoxysilane and a flame-retardant intermediate containing a P-H bond in an organic solvent, carrying out heating and stirring reaction, and carrying out reduced pressure distillation to obtain a phosphorus-silicon flame-retardant intermediate; s2, dissolving a water-soluble polyphenol compound in deionized water, adding the phosphorus-silicon flame-retardant intermediate dispersed by an ethanol water solution, uniformly mixing, adding a pH regulator until the system is weakly alkaline, and in a nitrogen atmosphere, carrying out heating and stirring reaction, reduced pressure distillation and drying to obtain a phosphorus-silicon modified polyphenol flame retardant; and S3, mixing 98-99 parts by weight of polylactic acid and 1-2 parts by weight of the phosphorus-silicon modified polyphenol flame retardant, heating and drying, carrying out melt blending and extrusion granulation in an extruder, and heating and pressurizing by an injection molding machine to obtain the phosphorus-silicon synergistic efficient flame-retardant polylactic acid. The flame retardant has the advantages of mature preparation process, convenience in operation, good compatibility, high flame retardant efficiency and the like.

The invention discloses a metal ion scavenger, the general structural formula of which is: a preparation method of the metal ion scavenger, comprising: (1) pretreatment; (2) dissolving vinyl triethoxysilane or vinyl trimethoxysilane or vinyl tris (β-methoxyethoxy) silane to prepare a solution; (3) adding vermiculite powder to the solution, stirring, filtering and drying to obtain vermiculite powder; (4) adding sodium 2-alkyl carbeneate to a reaction vessel, adding distilled water, hexadecyl ammonium chloride and acrylamide, heating, cold water reflux, stirring, dissolving, adding urea peroxide, reflux reaction, filtering and drying to obtain a solid product; (5) mixing and dissolving the solid product, 2,4-dihydroxybenzophenone and an organic solvent, adding vermiculite powder, shaking, filtering and obtaining a solid product, and irradiating the solid product under an ultraviolet lamp to obtain the metal ion scavenger. A demulsification system comprises 5% to 10% of the above-mentioned metal ion scavenger.

The invention discloses a bionic modification method of a hemodialysis membrane and application of the bionic modification method, and belongs to the technical field of medical materials.The method comprises the steps that vinylbenzylamine and vinyltriethoxysilane are dissolved in triethyl phosphate to be stirred, an initiator azodiisobutyronitrile is added, and heating polymerization is conducted to obtain a polymer [P (EP-VTES)]; carrying out amidation reaction to form a gallic acid functional polymer (Ga-EPTES); ga-EPTES is cross-linked to the surface of a polyethersulfone membrane in a monomolecular layer form, and the hemodialysis membrane with the functions of resisting oxidation and removing free DNA is prepared. According to the bionic modification method of the hemodialysis membrane, the functional limitation and modification defects of a traditional blood purification material are broken through, an efficient, safe and large-scale solution is provided for sepsis treatment, and the bionic modification method has scientific value and clinical transformation potential.

To provide a corrosion inhibitor coating composition.SOLUTION: A corrosion inhibitor coating composition includes a corrosion inhibitor such as 2,5-dimercapto-1,3,4-thiadiazole (DMCT), at least one reactive silane, and a catalyst. The reactive silane may include tetraethoxysilane (TEOS), vinyltriethoxysilane (VTS), 3-glycidoxypropyltrimethoxysilane (GPTMS), methyltrimethoxysilane (MTMS), or a combination thereof. The corrosion inhibitor coating composition does not include chromium. The catalyst may include zirconium isopropoxide or acetic acid. The corrosion inhibitor may also include a thiadiazole, a benzotriazole, an imidazole, or a combination thereof. An article to which a corrosion inhibitor coating treatment is applied and a method of providing a corrosion inhibitor coating treatment are also disclosed.SELECTED DRAWING: None

The invention discloses modified alkyd resin enamel paint and a preparation method thereof, and relates to the technical field of alkyd resin paint. The modified alkyd resin enamel paint is prepared from the following raw materials: fluorosilicone acrylic acid composite modified alkyd resin, scarlet powder, precipitated barium sulfate, a composite drier, zirconium iso-octoate with the purity of 12%, an anti-skinning agent and xylene. The fluorosilicone acrylic acid composite modified alkyd resin is prepared from basic alkyd resin, an acrylic acid prepolymer, vinyltriethoxysilane, 4-(2, 2-difluoroethyl) benzoic acid, an initiator, a solvent and a catalyst. The fluorosilicone acrylic acid composite modified alkyd resin is formed through step-by-step reaction of the acrylic acid prepolymer, the vinyltriethoxysilane and the 4-(2, 2-difluoroethyl) benzoic acid, so that the weather resistance, the water resistance, the pollution resistance and the adhesive force of a coating are improved, the modified alkyd resin still has good leveling property, the cost is prevented from being out of control, and the service life of the coating is prolonged. And both economy and practicability are considered.

The invention discloses a silicon resin-based super-hydrophobic nano-coating and a production process thereof, and relates to the technical field of waterproof paints.The hydrophobic branched polysiloxane is prepared, surface energy is reduced by adding diphenyl silanediol and introducing phenyl to enhance hydrophobicity, adding octyl triethoxy silane and adding long-chain alkyl, and the hydrophobic branched polysiloxane has the advantages that the surface energy is reduced; and tridecafluorooctyltriethoxysilane is added, and a fluorine-containing group is introduced, so that the hydrophobicity is further improved. According to the invention, trifluoropropyltriethoxysilane is also added, so that the surface energy is reduced, and the hydrophobicity of the nano coating is improved. The problems that epoxy resin is high in polarity, silicon resin is low in polarity, the epoxy resin and the silicon resin are poor in compatibility, and mixing layering and curing phase separation are prone to occurring in the prior art are solved, a large amount of vinyltriethoxysilane is added, vinyl can be subjected to an addition reaction with epoxy groups of bisphenol A type epoxy resin, the compatibility is improved, and therefore the hydrophobicity and compactness of the super-hydrophobic nano coating are improved.

The invention discloses a preparation method of high-strength quartz sand for fracturing, the quartz sand is subjected to cleaning, dehydration, ball milling and secondary modification, the modification is divided into polymerization modification and surface modification, a modifier for polymerization modification comprises vinyltriethoxysilane, sodium stearate, a 1% sodium hydroxide solution, phenolic resin and titanate, and the modifier is a mixture of vinyl triethoxysilane, sodium stearate, 1% sodium hydroxide solution, phenolic resin and titanate. According to the invention, the roundness, sphericity, surface smoothness, microstructure and other properties of the quartz fracturing sand are improved, so that the technical problems of lower strength and poorer crushing resistance of the quartz fracturing sand are solved.

The present application relates to a kind of fire-retardant railway tunnel EVA waterproof board with smoke suppression effect and its preparation method, the weight percentage of each component of EVA waterproof board is as follows: waterproof board EVA composite resin particle 35-37%, high-density polyethylene 4-11%, linear low-density polyethylene 16-17%, flame-retardant masterbatch 35-45%;Wherein, the flame-retardant masterbatch is obtained by extruding granulation of the blend of high-density polyethylene and flame retardant, the flame retardant is obtained by surface coating modification of CTAB@ADP using gamma-aminopropyl triethoxysilane and vinyl triethoxysilane, and the CTAB@ADP is obtained by surface coating modification of ADP using CTAB.The EVA waterproof board can meet the required mechanical properties, and also achieve the building material flame retardant standard B1 level, and the smoke production is less.

This invention relates to the field of coating technology, specifically to a vinyl POSS-modified fluorinated polysiloxane coating, its preparation method, and its application. First, octavinyl POSS and fluorinated polysiloxane undergo a hydrosilylation reaction under the action of a catalyst to obtain a vinyl POSS-modified fluorinated polysiloxane polymer. Then, the polymer is mixed with vinyltriethoxysilane and cured by heating to obtain the coating. This invention introduces octavinyl POSS into fluorinated polysiloxane via hydrosilylation and uses vinyltriethoxysilane as a crosslinking agent for heating curing to obtain the product. This overcomes the degradation of material mechanical properties caused by agglomeration during physical blending, improves the hardness, friction, and adhesion of the original fluorinated polysiloxane, and achieves a light transmittance of up to 94.12%.

This invention discloses a method for preparing low-carbon waste incineration fly ash (MSWIFA) cement-based materials by modified nano-solution carbonization and its application. The method disperses nano-silica in a VTES (vinyltriethoxysilane) ethanol solution as a medium for MSWIFA carbonization modification, while simultaneously utilizing an ethanolamine solution to enhance the degree of MSWIFA carbonization. The carbonized and modified MSWIFA is incorporated into cement-based materials as a supplementary cementitious material, not only improving the compressive strength of the cement-based materials but also consolidating heavy metal ions in the MSWIFA. Most importantly, the carbonization method described in this invention is superior to traditional carbonization methods. The carbonization modification process eliminates the need for steps such as filtration and drying, retaining finer particles, reducing energy consumption, saving time, and improving carbonization efficiency. Building materials produced using modified MSWIFA reduce environmental pollution and possess excellent thermal insulation properties, achieving the goals of green environmental protection, energy conservation, and emission reduction.