1194 results about "Triethoxysilane" patented technology

The invention relates to the technical field of heavy anti-corrosion coatings, in particular to a graphene enhanced epoxy modified organic silicon resin heavy anti-corrosion powder coating. The coating is prepared from the following components in parts by weight: 42 to 58 parts of epoxidized epoxy modified organic silicon resin, 0.8 to 2.5 parts of hydroxylated graphene, 6 to 11 parts of nano zirconium dioxide coated boron nitride, 2.5 to 5.5 parts of lanthanum iso-octoate-titanate composite coupling agent, 1.5 to 3.5 parts of bis (3-triethoxysilylpropyl) disulfide, 4 to 7 parts of polyhedral oligomeric silsesquioxane, 5 to 8 parts of curing agent, 0.8 to 1.8 parts of flatting agent and 0.4 to 0.9 part of defoaming agent. 2.5 to 4.5 parts of polyether-ether-ketone micro powder and 1.2 to 2.8 parts of fluorine-containing phosphate ester. According to the invention, the resin is modified through chemical bridging, the modified graphene and the nano-coated powder are matched to construct a synergistic enhancement system, and the interface bonding is optimized by the composite coupling agent. The coating is excellent in adhesive force, corrosion resistance and mechanical property, good in processing fluidity and high in aging resistance and thermal stability, solves the problem that a traditional product is short in performance, and meets the industrial requirement.

Disclosed in the present invention are a fluorosilicone-modified low-surface-energy antifouling coating and a preparation method therefor. The coating comprises the following components in parts by weight: 11-15 parts of butyl acrylate, 3-4 parts of dodecafluoroheptyl methacrylate, 3-4 parts of vinyl-terminated polydimethylsiloxane, 3-4 parts of 2-hydroxy-4-acryloyloxybenzophenone, 30-38 parts of methyl isobutyl ketone, 0.15-0.25 parts of azobisisobutyronitrile, 0.1-0.2 parts of sodium hydroxide, 2-3 parts of modified titanium dioxide nanoparticles, and 0.5-1.5 parts of 3-aminopropyltriethoxysilane. In the present invention, vinylpentamethyldisiloxane reacts with decamethylcyclopentasiloxane to prepare vinyl-terminated polydimethylsiloxane; a titanium dioxide precursor is mixed with polydopamine nanoparticles for modification to prepare modified titanium dioxide nanoparticles; and then the components above are mixed to prepare the fluorosilicone-modified low-surface-energy antifouling coating. The coating has low surface energy and good adhesion and ultraviolet resistance.

The invention provides weather-resistant anti-freezing road concrete and a preparation method thereof, and belongs to the technical field of concrete. The concrete comprises the following components: sulphoaluminate cement, Portland cement, silica fume, fly ash, modified granite gravel coarse aggregate, medium sand fine aggregate, silica fume blended fiber, silica fume blended polyacrylonitrile fiber, a composite air entraining agent, a functional modifier, a composite antifreeze agent, pre-absorbent zeolite powder and the like. The preparation method comprises the following steps: modifying granite macadam with Al (H2PO4) 3, SiO2 and methoxypolyethylene glycol triethoxysilane, and modifying with a lithium silicate aqueous solution to obtain the modified granite macadam coarse aggregate. The composite air entraining agent comprises a JRY-Q air entraining agent and sodium alpha-olefin sulfonate. The functional modifier is prepared from gas phase method spherical nano silicon dioxide and nano alpha-Al2O3. The composite antifreeze agent comprises ethylene glycol butyl ether acetate and modified calcium carbonate. The modified calcium carbonate is obtained by sequentially modifying nano calcium carbonate with calcium chloride, a KH-550 silane coupling agent and stearic acid.

The invention relates to the technical field of conductive materials, in particular to a high-concentration dispersion system and a preparation method thereof. The high-concentration dispersion system comprises a conductive agent, a dispersing agent, a solvent and a viscosity reduction auxiliary agent, the conductive agent is modified carbon nanotubes, the dispersing agent is modified polyvinylpyrrolidone, the solvent is N-methyl pyrrolidone or deionized water, and the viscosity reduction auxiliary agent is piperazine anhydrous; wherein the modified carbon nano tube is obtained by mixing and heating a carbon nano tube and a mixed acid solution of nitric acid and sulfuric acid, then cooling, filtering, washing, drying, then dispersing in 75% ethanol, and finally adding 3-[3-carboxyl allylamido] propyltriethoxysilane for modification; the modified polyvinylpyrrolidone is obtained by heating polyvinylpyrrolidone at 310-330 DEG C and then oxidizing the polyvinylpyrrolidone. The conductive agent content of the high-concentration dispersion system is high, the conductive agent accounts for 15%-20% of the high-concentration dispersion system by mass, and the high-concentration dispersion system is low in viscosity, high in dispersity and good in conductivity.

The invention provides a diaphragm and a preparation method thereof and a lithium ion battery, the diaphragm comprises a base membrane layer and a composite functional layer, the composite functional layer comprises hydrophobic SiO2 aerogel modified by a hydrophobic agent, a conductive ion polymer and a solid electrolyte, and the composite functional layer respectively accounts for 3-12wt%, 0.5-1.0 wt% and 0.5-1.5 wt% of the total mass of the diaphragm; the hydrophobic agent comprises trimethylchlorosilane, hexamethyldisilazane, perfluorooctyltriethoxysilane, polyvinylidene fluoride, polydimethylsiloxane and the like, the conductive ionic polymer comprises polyvinylpyrrolidone, lithium polymethacrylate, lithium polystyrene sulfonate, polyacrylamide and the like, and the solid electrolyte comprises lithium lanthanum titanium oxide, lithium lanthanum zirconium oxide, lithium lanthanum zirconium tantalum oxide and the like. The wettability is improved by the high porosity of the hydrophobic SiO2 aerogel, the stability and strong conductivity of a physical conductive network of the solid electrolyte and the ion affinity and amphoteric binding capacity of the conductive ion polymer are optimized, the electrochemical performance and thermal stability of the interface are optimized, and comprehensive optimization of the thermal-electric-interface performance of the diaphragm is realized through combination.

The invention relates to the technical field of polyethylene cables, in particular to a high-strength flame-retardant polyethylene cable and a preparation method thereof.The high-strength flame-retardant polyethylene cable is composed of a copper stranded wire core and a flame-retardant protective layer on the surface of the copper stranded wire core; the flame-retardant protective sleeve is made of a high-strength flame-retardant material; the high-strength flame-retardant material comprises the following components in parts by weight: 80-100 parts of low-density polyethylene, 5-10 parts of a flame retardant, 3-5 parts of a performance additive, 1-1.5 parts of filler, 0.1-0.2 part of a voltage stabilizer, 0.1-0.5 part of an antioxidant, 0.5-1 part of an initiator and 1-5 parts of a lubricant. The amino group on the surface of the silicon dioxide carrier treated by 3-aminopropyltriethoxysilane in the modification additive can be subjected to acid-base interaction with the phosphate group of APP to form chemical bridging; the interface bonding enables the APP and the modification additive to synchronously migrate to the surface of the material during combustion to cooperatively construct a protection layer, so that the problem of protection failure caused by migration rate difference of different flame retardants in a traditional flame-retardant system is solved, and the flame-retardant performance of the cable can be greatly improved.

The invention relates to the field of coatings, and discloses a biomass-based oil-resistant coating and a preparation method thereof, the coating comprises an additive solution, a paraffin solution and gallic acid; the paraffin solution is obtained by dissolving paraffin in absolute ethyl alcohol; a preparation method of the additive solution comprises the following steps: mixing chitosan powder and an acetic acid aqueous solution to prepare a chitosan solution, ultrasonically dispersing functionalized montmorillonite in deionized water to prepare a suspension, then uniformly mixing the chitosan solution and the suspension, adding modified phytic acid prepared by grafting phytic acid and ethylene glycol diglycidyl ether, and stirring to react; the functional montmorillonite is prepared by modifying modified montmorillonite with titanium dioxide and zinc oxide, then activating the modified montmorillonite with 3-aminopropyltriethoxysilane and succinic anhydride, and then carrying out a ring-opening reaction with glycidyl neodecanoate. The coating prepared by the invention has high water resistance, the Kit oil-proof grade is kept at grade 12, and the oil-proof performance of the coating is greatly improved. Meanwhile, the antibacterial performance, the tensile index and the ultraviolet aging resistance are relatively high.

The invention belongs to the technical field of building materials, and particularly relates to a micro-expansion anti-cracking waterproof composite deep groove filler and a preparation method thereof. The micro-bulking anti-cracking waterproof composite deep groove filler provided by the invention comprises cement, gypsum, mineral powder, nano silicon oxide, coarse aggregate, fine aggregate, modified fibers, an expanding agent, a polycarboxylate superplasticizer and water. According to the invention, polyacrylamide, calcium sulphoaluminate and magnesium oxide are adopted to jointly form an expanding agent, and early-stage-late-stage full-period shrinkage compensation is jointly formed in a concrete hydration process, so that the density of the concrete is effectively improved, and the waterproof performance of the concrete is further improved; according to the invention, sodium dodecyl benzene sulfonate and propylene glycol block polyether are adopted to carry out compound modification on graphene oxide, and gamma-aminopropyltriethoxysilane is connected to the surface of basalt fiber, so that the bonding strength of basalt fiber and a cement matrix and the compactness of the cement matrix are improved, and the waterproof and anti-cracking properties of concrete are further improved.

The invention belongs to the technical field of building materials, and particularly relates to a building thermal insulation aerogel material and a preparation method, the aerogel material comprises the following components by mass: 25-35 parts of a silicon source, 40-80 parts of a solvent, 0.3-0.6 part of a catalyst, 4-13 parts of an aluminum source, 9-20 parts of reinforcing fibers, 4-10 parts of a modifier, and 20-40 parts of carrier fibers; the silicon source is ethyl orthosilicate or methyl trimethoxy silane; the solvent is absolute ethyl alcohol; the catalyst is hydrochloric acid or ammonia water; the aluminum source is aluminum nitrate nonahydrate or aluminum isopropoxide; the reinforced fibers are nano titanium dioxide fibers; the modifying agent is gamma-aminopropyl triethoxy silane or gamma-methacryloyloxy propyl trimethoxy silane, and the modifying agent is gamma-aminopropyl triethoxy silane or gamma-methacryloyloxy propyl trimethoxy silane; the carrier fiber is rock wool or mineral wool. According to the invention, the thermal insulation aerogel material for buildings, which is high in mechanical strength, good in weather resistance and excellent in thermal insulation performance, can be prepared, so that the requirements of the building industry on high-performance thermal insulation materials can be met.

The invention discloses a flame-retardant and wear-resistant rope and a preparation method thereof, and belongs to the technical field of rope processing. The rope comprises a steel wire rope and a rubber sheath; wherein the rubber sheath comprises inner-layer rubber and outer-layer rubber; the inner-layer rubber is prepared from the following components: butadiene styrene rubber, white carbon black, an activating agent, a reinforcing agent, an anti-aging agent, gamma-mercaptopropyltriethoxysilane, a rubber adhesive, cobalt neodecanoate, sulfur and a vulcanization accelerator; the outer-layer rubber comprises the following components: butadiene styrene rubber, nitrile rubber, a flame-retardant wear-resistant reinforcing agent, white carbon black, an activating agent, a reinforcing agent, an anti-aging agent, an antistatic agent, sulfur and a vulcanization accelerator; the cross section of the rope is designed to be flat, the width of the rope is 30-250 mm, the thickness of the rope is 10-40 mm, and the mass of the rope per meter is 0.5-25 kg / m. The prepared rope has excellent flame retardance, wear resistance and antistatic performance, the adhesive force between the rubber layer and the steel wire is large, and the rope is not prone to being abraded or peeled off in long-term use.

The invention relates to the field of polyester fibers, and discloses a composite enhanced polyester fiber for bags and suitcases and a preparation method thereof.The composite enhanced polyester fiber is prepared from polyethylene glycol terephthalate slices, polyethylene glycol, tris (2, 4-di-tert-butylbenzene) phosphite, tetra [beta-(3, 4-ditert-butylbenzene)] tetrakis [beta]-(2, 4-ditert-butylbenzene)] tetrakis [beta-(3, 4-ditert The composite material is prepared from 1, 3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester, modified nano-zinc oxide, tetrabutyl titanate, a chitosan aqueous solution and acetic acid. The modified nano zinc oxide is prepared from gamma-aminopropyltriethoxysilane, an ethanol water solution, acetic acid and nano zinc oxide. The composite enhanced polyester fiber disclosed by the invention has relatively good antibacterial property, hygroscopicity and mechanical property.

The invention discloses an antistatic PET dust-free film and a preparation method thereof, and relates to the technical field of high polymer materials. When the antistatic PET dust-free film is prepared, firstly, 6-bromohexanoic acid reacts with 4-imidazole-1-butyric acid, and then is subjected to ion exchange with potassium hexafluorophosphate to prepare diacid imidazole hexafluorophosphate ionic liquid; the preparation method comprises the following steps: enabling montmorillonite to react with tetraethoxysilane, 3-aminopropyltriethoxysilane and dodecyl triethoxysilane, so as to obtain modified montmorillonite; carrying out copolycondensation on terephthalic acid, the diacid imidazole hexafluorophosphate ionic liquid, ethylene glycol and the modified montmorillonite to prepare a modified polyester master batch; and carrying out melt blending on the modified polyester master batch and a chain extender, and carrying out blow molding to obtain the antistatic PET dust-free film. The prepared antistatic PET dust-free film has the advantages of being antistatic, flame-retardant, super-hydrophobic and low in dust adhesion rate.

The invention relates to the technical field of agricultural fertilizers, in particular to an organic-inorganic composite silicon-calcium-magnesium fertilizer and a preparation method and application of the organic-inorganic composite silicon-calcium-magnesium fertilizer. The high-temperature activated silicon-calcium-magnesium mineral powder is composed of calcined wollastonite powder, calcined serpentine powder, dolomite powder and zeolite powder; 2%-5% of an organosilane modifier, wherein the organosilane modifier is composed of gamma-aminopropyl triethoxy silane and gamma-glycidyl ether oxypropyl trimethoxy silane, and the organic silane modifier is composed of gamma-aminopropyl triethoxy silane and gamma-glycidyl ether oxypropyl trimethoxy silane; 18%-35% of a functional organic matter complex, wherein the functional organic matter complex is composed of mineral source sodium humate, bioactive small peptide, sodium alginate and polyglutamic acid; and 3%-8% of auxiliary functional components, so that the solubility and the bioavailability of silicon, calcium and magnesium elements in minerals are remarkably improved.

The invention discloses high-adhesiveness water-based printing ink and a preparation method thereof, and belongs to the technical field of printing, and the high-adhesiveness water-based printing ink comprises the following components: water-based acrylic resin, SiO2 (at) TiO2 (at) EPS composite filler, pigment, a dynamic covalent cross-linking agent, nano cellulose, a wetting dispersant, a defoaming agent and deionized water. The preparation method comprises the following steps: firstly, preparing an EPS terpolymer containing a multi-functional group, and then modifying a SiO2 / TiO2 preassembly to prepare a composite filler; meanwhile, a dynamic covalent cross-linking agent generated by the reaction of furan methacrylate and maleimide propyl triethoxy silane is prepared; and finally, mixing the components step by step to obtain the ink. The multi-stage structure of the composite filler enhances the interface effect and covering power, the dynamic covalent cross-linking agent forms a reversible network to improve the stability and the self-repairing property, and the nano cellulose and other components have the synergistic effect, so that the ink has good adhesiveness and stability.

The invention relates to the technical field of building, chemical engineering and energy heat preservation, and discloses a silicon-based aerogel composite material and a preparation method and application thereof. The invention relates to a light-emitting diode (LED) photo-curing agent, which is prepared from tetraethyl orthosilicate, methyltrimethoxysilane, allyltriethoxysilane, pentaerythritol tetra (3-mercaptopropionate), N-(3-(triethoxysilyl) propyl) furfuryl amine, N-(3-(triethoxysilyl) propyl) maleimide, a photoacid generator and a photoinitiator. The composite material has a three-dimensional porous silicon dioxide network skeleton and a polymer interpenetrating network, the three-dimensional porous silicon dioxide network skeleton is formed by copolymerization of tetraethyl orthosilicate and methyltrimethoxysilane, and the polymer interpenetrating network is formed by reaction of pentaerythritol tetra (3-mercaptopropionate) and allyltriethoxysilane. The preparation method comprises the steps of sol preparation, light curing, solvent replacement, surface hydrophobic modification and normal-pressure drying. The material shows excellent thermal insulation and mechanical properties in the fields of building heat insulation, pipeline heat preservation and cryogenic heat insulation.

The invention discloses a flame-retardant and self-repairing wood epoxy coating as well as a preparation method and application thereof, and belongs to the technical field of epoxy resin. The preparation method specifically comprises the following steps: (1) uniformly mixing vanillin, epichlorohydrin and tetrabutylammonium bromide, reacting, cooling, dropwise adding a NaOH aqueous solution, continuously reacting, washing, drying, precipitating and drying again to obtain bio-based epoxy resin for later use; (2) uniformly mixing methanol and hydrochloric acid, heating, carrying out condensation reflux, adding gamma-aminopropyltriethoxysilane, reacting, cooling, adding tetrahydrofuran, washing and carrying out vacuum drying to obtain polyhedral oligomeric silsesquioxane; and (3) dissolving polyhedral oligomeric silsesquioxane in the organic solvent, adding the bio-based epoxy resin, uniformly stirring, standing and curing to obtain the composite material. According to the invention, vanillin is used for constructing the epoxy resin containing imine bonds, so that the self-repairing and excellent flame-retardant properties of the epoxy resin are realized.

The invention relates to the field of water treatment, and discloses a scale and corrosion inhibitor for seawater circulating cooling water, which is prepared from phosphonic acid grafted maleic anhydride-acrylic acid copolymer, hydroxyethylidene diphosphonic acid, amino trimethylene phosphonic acid, N, N-dimethylformamide, N, N-dimethylformamide, N, N-dimethylformamide, N, N-dimethylformamide, N, N- The anti-corrosion coating is prepared from the following raw materials: N, N-diethylaminomethyl-benzotriazole, gamma-aminopropyltriethoxysilane, zinc salt and a polyoxyethylene-polyoxypropylene block copolymer. The core of the invention is that all the raw material components form the thermo-sensitive polyelectrolyte compound through a self-assembly process. The compound is stably dispersed at low temperature by utilizing the cloud point effect of the block copolymer, and is subjected to phase change and preferential deposition on a high-temperature heat exchange surface, so that targeted and efficient delivery of various active components is realized. According to the invention, the problems of incompatibility of components and poor stability of a traditional compound agent are solved, the product has excellent storage stability, and efficient and synergistic corrosion and scaling control can be realized under high-temperature and high-salinity working conditions.

The application belongs to the technical field of functional coating materials, and particularly relates to a kind of super-hydrophobic solution based on fumed silica and its preparation method and application, comprising: step one, 20-200nm fumed silica nanoparticles are dispersed in ethanol / water mixed system, and sodium dodecyl benzene sulfonate is added to prevent agglomeration;Step two, under the catalysis of ammonia, tetraethyl orthosilicate and 1H, 1H, 2H, 2H-perfluorodecyltriethoxysilane are added dropwise in sequence for fluorination modification;Step three, fluorinated silica nanoparticle suspension is prepared by ultrasonic-assisted reaction;Step four, the solution is sprayed onto the surface of ceramic substrate with micro-nano structure to form a coating;Step five, strong adhesion without adhesive is realized by mechanical anchoring effect.The application realizes super-hydrophobic performance of 153±0.5° high water contact angle and physical adhesion stability under 100-200g load by the synergistic effect of nanoparticle size effect and substrate surface topological structure, low surface energy of fluorinated alkyl chain and Cassie-Baxter air cushion layer effect, and is especially suitable for self-cleaning surface, anti-icing coating and marine corrosion prevention field.

The invention discloses a copper-clad plate material containing elastomer resin and a preparation method of the copper-clad plate material, and belongs to the technical field of new materials. The method comprises the following steps: mixing a styrene-butadiene-styrene block copolymer with polybutadiene rubber, adding nano-montmorillonite, and carrying out intercalation modification through hexadecyl trimethyl ammonium bromide to prepare nano-modified elastomer resin; the preparation method comprises the following steps: mixing polybutylene terephthalate with nano silicon dioxide, and carrying out surface modification by gamma-aminopropyltriethoxysilane and hexamethyldisilazane to obtain a resin matrix; mixing the two phases, adding citric acid, and carrying out microwave heating and high-shear dispersion to obtain a discrete material; carrying out hot pressing on the dispersion, adding polyurethane and polylactic acid, uniformly mixing, adding polydimethylsiloxane and sodium dodecyl benzene sulfonate, and curing to obtain a cured product; and coating the surface of the cured product with a nano-copper layer. The material has the characteristics of high peel strength, low dielectric loss, low water absorption and low thermal expansion, and is suitable for the field of high-speed low-loss copper-clad plates.

The invention belongs to the technical field of mineral flotation, and particularly relates to a nanocellulose-based coal slime collecting agent and a preparation method and application thereof. Wet-grinding the dried absorbent cotton, drying again, acidizing, filtering, washing and centrifugally drying to obtain precursor cellulose; dissolving the precursor cellulose in deionized water, adjusting the pH value to 10, adding an ethanol solution of alkyltriethoxysilane, heating, stirring for reaction, naturally cooling, centrifuging, washing and drying to obtain hydrophobic nano cellulose; and the hydrophobic nanocellulose and the non-polar hydrocarbon oil are evenly mixed, and the coal slime collecting agent is obtained. The prepared coal slime collecting agent contains the hydrophobic nanocellulose which is high in softness and has a net-shaped structure, in the flotation process, adhesion of bubbles and minerals can be promoted, diffusion of the bubbles is promoted, and the flotation efficiency and the recovery rate are improved.

The invention relates to the field of cables, and discloses a flame-retardant impact-resistant cable and a preparation process thereof.The cable sheath layer is prepared from low-density polyethylene, nitrile rubber, ethylene-vinyl acetate copolymer, modified halloysite nanotubes and a flame-retardant additive, the preparation method comprises the following steps: carrying out acylating chlorination on 2, 4-dihydroxyphenyl)-2H-benzotriazole, reacting with 3, 5-di-tert-butyl-4-hydroxybenzylamine to prepare a modified acylating chlorination ultraviolet absorbent, and grafting the modified acylating chlorination ultraviolet absorbent with aminated halloysite nanotubes to prepare the ultraviolet absorbent. The aminated halloysite nanotube is prepared by using gamma-aminopropyl triethoxy silane to modify the aminated halloysite nanotube; the flame-retardant additive is prepared from a flame-retardant intermediate obtained by reaction of diphenyl silanediol and phosphorus oxychloride and phosphonitrilic chloride trimer through a precipitation polymerization method. The added modified halloysite nanotube and flame-retardant additive can endow the cable with excellent mechanical properties, aging resistance, flame retardance and heat resistance.

The invention relates to the field of electric wires and cables, and discloses a high-temperature-oxidation-resistant flame-retardant electric wire and cable and a preparation method thereof.The sheath layer of the electric wire and cable comprises low-density polyethylene, nitrile rubber, natural rubber, ethylene-tetrafluoroethylene copolymer, modified multi-walled carbon nanotubes, modified nano titanium dioxide and auxiliaries; the modified multi-walled carbon nanotube is prepared by reacting an acylating chlorination multi-walled carbon nanotube with a polycyclotriphosphazene derivative; the polycyclotriphosphazene derivative is prepared by reacting hexachlorocyclotriphosphazene with p-aminodiphenylamine and then taking diphenyl dihydroxysilane as a linker; the modified nano titanium dioxide is prepared by the following steps: substituting phenylphosphoryl dichloride with phloroglucinol, then sequentially substituting with 3-(3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl chloride and 3-aminopropyltriethoxysilane, and grafting an obtained antioxidant phosphorus-containing coupling agent with nano titanium dioxide. The sheath layer material prepared by the invention has excellent high-temperature oxidation resistance, flame retardance, wear resistance and heat resistance.

The invention relates to the technical field of intermediate membranes, in particular to a heat insulation type ionic intermediate membrane and a preparation method thereof.The heat insulation type ionic intermediate membrane is characterized in that hollow silicon dioxide nanotubes serve as filler, epoxy resin modified polyurethane emulsion serves as a base material, auxiliaries are added to prepare a heat insulation coating, and the ionic intermediate membrane layer is coated with the heat insulation coating to form a heat insulation layer; the preparation method comprises the following steps: carrying out amination on a hollow silicon dioxide nanotube by using 3-aminopropyltriethoxysilane, carrying out dehydration condensation on furan-2, 5-diketone and an amino group to synthesize maleimide so as to obtain a maleimide modified hollow silicon dioxide nanotube, and grafting furan carboxylic acid imidazolium salt polyionic liquid by using a Diels-Alder reaction so as to obtain a composite hollow silicon dioxide nanotube; aminated glass fibers, composite hollow silicon dioxide nanotubes, epoxy resin modified polyurethane emulsion and auxiliaries are mixed, and a reinforcing layer coating is obtained; and coating the lower surface of the ionic intermediate film layer with a reinforcing layer coating to form the reinforcing layer.

The invention discloses an electromagnetic shielding cable for a radio altimeter and a preparation method thereof, and relates to the technical field of cables. The preparation method comprises the following steps: treating ethylene-tetrafluoroethylene copolymer particles, a mixed compatilizer, a chemical foaming agent and a nano nucleating agent by using mixed gas low-temperature plasma containing acrylic acid, performing melt blending by using a double-screw extruder, injecting supercritical carbon dioxide, and performing slow cooling and shock cooling to obtain a three-dimensional porous matrix containing micro-nano cells; the preparation method comprises the following steps: synthesizing ferroferric oxide particles by a solvothermal method, coating a silicon dioxide dielectric layer, and then chemically silvering to prepare ternary core-shell composite particles; modifying the particles with aminopropyltriethoxysilane and a block copolymer to obtain modified composite particles; melting, mixing and granulating the porous matrix and the modified composite particles to obtain the electromagnetic shielding composite material. And performing extrusion molding on a conductor to form an insulation shielding layer, thereby obtaining the cable. The cable has an excellent electromagnetic shielding effect.

The invention belongs to the field of fiber reinforced composite materials, and provides an SCA modified basalt fiber cement base and a preparation method thereof.The preparation method comprises the following steps that basalt fibers are pretreated; a gamma-aminopropyltriethoxysilane solution, a gamma-glycidyl ether oxypropyltrimethoxysilane solution and a gamma-methacryloyloxypropyltrimethoxysilane solution are prepared, and the dried basalt fibers are soaked in the solutions respectively to be modified; naturally airing at room temperature after soaking, drying in an air dry oven, cooling to room temperature, and sealing and storing; carrying out dry mixing on the modified basalt fiber, ordinary Portland cement, sand and an additive to prepare an SCA modified basalt fiber cement base; by adopting different SCAs and introducing additional reaction functional groups, the interface bonding strength between the basalt fibers and a cement matrix is improved, and the problem of non-uniform fiber dispersion is solved, so that the comprehensive performance of the material is improved.

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

The invention discloses a phenolic resin material as well as a preparation method and application thereof in 3D printing, and relates to the technical field of high polymer materials. When the phenolic resin material is prepared, hydroxylated carbon nanotubes react with isocyanate propyl triethoxy silane to prepare pre-modified carbon nanotubes, and then the pre-modified carbon nanotubes react with 2-chloroethyl triethoxy silane to prepare modified carbon nanotubes; the preparation method comprises the following steps: reacting vanillin with 5-amino-1, 2-dihydro-2-methyl-3H-1, 2, 4-triazole-3-thioketone and 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide in sequence, so as to obtain pre-modified vanillin; reacting the pre-modified vanillin with divinyl disulfide to obtain modified vanillin; the modified vanillin, phenol and formaldehyde react to prepare modified phenolic resin, and then the modified phenolic resin reacts with the modified carbon nanotubes to prepare the phenolic resin material. The phenolic resin material prepared by the invention has good flame retardance, heat resistance, aging resistance, self-repairing property and mechanical property.

The invention relates to the technical field of special cables, and discloses a high and low temperature resistant composite insulating layer cable and a preparation method thereof.The cable comprises a conductor core and a composite insulating layer wrapping the conductor core, and the composite insulating layer comprises a high temperature resistant heat conduction core layer and a low temperature resistant elastic layer; the high-temperature-resistant heat-conducting core layer is prepared from the following raw material: polyamide acid; hexagonal boron nitride; alpha-phase silicon carbide; the preparation method comprises the following steps: adding gamma-amino propyl triethoxy silane; nano barium titanate; the low-temperature-resistant elastic layer is prepared from the following raw materials: vinyl terminated polydimethylsiloxane; performing hydrophobic treatment on fumed silica; a Karstedt catalyst; a hydrogen-containing silicone oil crosslinking agent; the average particle size D50 of the 1-ethynyl-1-cyclohexanol and the alpha-phase silicon carbide is 0.5 to 2 mu m. According to the invention, by adopting a microwave selective heating and interlayer heat conduction mechanism, efficient and high-quality integrated curing of the composite insulating layer is realized.

The invention relates to the technical field of packaging materials, in particular to a preparation method of a food heat-preservation environment-friendly quick-transportation packaging bag. The prepared quick-transportation packaging bag sequentially comprises an outer film layer, a heat preservation layer, an aluminum foil layer and an inner film layer from outside to inside. The outer film layer and the inner film layer are made of a blend of polylactic acid, carboxymethyl starch and glycerol, the thermal insulation layer is formed by compounding a phase change capsule, silicon dioxide aerogel and a polyurethane adhesive on an aluminum foil layer, the phase change capsule takes a mixture of n-octadecane and paraffin as a core material and takes Arabic gum as a wall material, and the outer surface of the wall material is coated with a stearic acid film layer; an antibacterial coating containing microwave modified beewax, a functional additive and 3-aminopropyltriethoxysilane is sprayed on the inner surface of the inner film layer; the prepared quick-transportation packaging bag has excellent heat preservation performance and antibacterial performance, also has good degradability, is environmentally friendly and can meet multiple requirements of modern food logistics for packaging.

The invention relates to the technical field of fiber materials, in particular to a polydopamine modified polypropylene antistatic fiber and a preparation method thereof. The antistatic polypropylene fiber overcomes the problems of poor antistatic effect and mechanical property of the polypropylene fiber. The preparation method comprises the following steps: carrying out step-by-step mixing, melt extrusion, spinning, drafting and heat setting on raw materials such as polypropylene slices, polydopamine modified polypropylene, carbon nanotubes, modified titanium dioxide, modified graphene and the like to obtain the antistatic fiber. The polydopamine modified polypropylene is obtained by modifying polypropylene with dopamine hydrochloride; the modified titanium dioxide is obtained by modifying nano titanium dioxide by using 3-aminopropyltriethoxysilane; the modified graphene is obtained by sulfonating graphene oxide and adding octadecylamine for modification. All the materials and the process cooperate with each other, an antistatic system is constructed on the surface and in the fiber, and meanwhile the mechanical property is improved. The fiber prepared by the method is excellent in antistatic effect and mechanical property, and has a good application prospect.