93 results about "Nano sio2" patented technology

The invention discloses a preparation method of a coarse-denier high-strength polyethylene fiber and a polyethylene fiber.The preparation method comprises the steps that a nano modifier is prepared, the nano modifier is hyperbranched polyethylene modified nano SiO2, and polyethylene powder, white oil, the nano modifier and an antioxidant 1010 are mixed to form a mixed solution; and extruding the mixed solution to form gel fibers, standing the gel fibers to obtain oil, and carrying out three-stage extraction with an ionic liquid, drying and stretching to form the polyethylene fibers. The nano modifier is adopted as a raw material of the polyethylene fiber and is hyperbranched modified nanoparticles, the dispersion uniformity of the nanoparticles can be ensured due to small volume steric hindrance of the nanoparticles, and long-chain alkyl outside the particles and a polyethylene molecular chain have very good compatibility; meanwhile, bidirectional permeation and diffusion of the extraction agent and the solvent are greatly promoted, the extraction process is accelerated, solvent residues can be reduced, and the mechanical property of the prepared fiber is effectively improved.

The invention relates to a halogen-free flame-retardant flexible bending-resistant low-voltage power cable and a manufacturing method thereof. An insulating layer of the cable is made of a core-shell type nano composite phase change material, a core layer is made of a polyethylene glycol / paraffin phase change material, a shell layer is made of polyurethane or modified polyamide nano fibers and nano SiO2 particles, and the cable is prepared by adopting a coaxial electrostatic spinning technology. According to the structure, stress can be effectively dispersed when the cable is bent, crack propagation is reduced, the temperature is adjusted through the phase change material, and local overheating is prevented. The three-dimensional network structure enhances the bending resistance of the cable, the bending life is prolonged by 40%-60%, and the halogen-free flame retardant performance is ensured at the same time. The technology realizes collaborative optimization of temperature adjustment, stress buffering and bending resistance, and is suitable for power cables with high requirements.

The invention provides an epoxy resin wear-resistant coating and a preparation method thereof, and belongs to the technical field of polymer composite materials. The epoxy resin wear-resistant coating is prepared from the following raw materials in parts by mass: 100 parts of epoxy resin, 2 to 20 parts of composite filler, 5 to 30 parts of curing agent, 0.2 to 4 parts of defoaming agent and 0.5 to 5 parts of flatting agent, the composite filler is PTFE and a modified inorganic filler; the modified inorganic filler is a compound system of modified nano SiO2, modified nano ZnO, modified MoS2 and modified nano Al2O3. According to the invention, the antifriction material and the reinforcing material are compounded, and the silane coupling agent is used for surface modification, so that firm combination of the filler and the epoxy resin matrix is realized. MoS2 and PTFE provide a continuous lubricating effect, and the friction coefficient is reduced; the hardness, the strength and the bearing capacity of the coating are remarkably improved through the nano oxide particles, and the coating has the characteristics of low friction and high wear resistance through the synergistic effect of the nano oxide particles and the coating.

The application discloses a kind of visible light super-transparency super-smooth homogeneous film and preparation method thereof, belong to functional film preparation technical field.The application is with polydimethylsiloxane as only matrix material quality, add volatile agent, cooperate PDMS special curing agent to prepare first PDMS composition;It is coated in glass substrate and solidified, volatile agent is volatilized to form porous PDMS bottom layer;Again, low viscosity liquid PDMS of same material is scraped to the surface of bottom layer, forms liquid lubricating layer, finally obtains the super-transparency super-smooth film of homogeneous composite structure, the film visible light transmittance is greater than or equal to 95%, water contact angle is greater than or equal to 150 °, sliding angle is less than or equal to 5 °, solve the problem that traditional nano SiO2 modified PDMS film light transmittance is low, and the adhesion between heterogeneous layers is poor, and process is simple, low in cost, applicable to high-end optical field such as photovoltaic panel.

The invention discloses a method and a system for enhancing the interface performance of an optical fiber composite insulator. The method comprises the following steps: firstly, introducing a polar functional group on the surface of an optical fiber through plasma pretreatment and forming micro-etching; then coating a nano SiO2 transition layer on the surface of the optical fiber by adopting a sol-gel method; and finally, implanting the treated optical fiber into a composite core matrix material containing a silane coupling agent, and curing and molding. Through the synergistic effect of physical anchoring and chemical bonding, the interface bonding strength between the optical fiber and the core body is remarkably enhanced, the tensile strength of the composite material is improved from 35.096 MPa to 52.117 MPa, the bending strength of the composite material is improved from 60.124 MPa to 78.946 MPa, meanwhile, the breakdown strength is remarkably improved, the leakage current is remarkably reduced, the interface electric field distribution is effectively improved, and the service life of the composite material is prolonged. And the mechanical performance, the electrical insulation performance and the long-term operation reliability of the optical fiber composite insulator are improved.

The invention discloses low-temperature oil-resistant hydrogenated butadiene-acrylonitrile rubber as well as a preparation method and application thereof, and the rubber is prepared from the following raw materials in parts by weight: 100 parts of hydrogenated butadiene-acrylonitrile rubber, 8-20 parts of a polyether plasticizer, 50-65 parts of carbon black, 5-8 parts of modified nano SiO2, 2-4 parts of an anti-aging agent, 5.8-6.5 parts of a peroxide vulcanizing agent and 2-2.8 parts of a vulcanizing aid. The acrylonitrile content in the hydrogenated butadiene-acrylonitrile rubber is greater than or equal to 37%, and the residual double bond content is not greater than 4.5; through the design of the content of acrylonitrile and double bonds in raw rubber, a low-temperature-resistant plasticizer TP-90B is used as a softener to regulate the rigidity of a main chain structure of the raw rubber with high acrylonitrile content and improve the low-temperature performance, and is matched with modified nano SiO2 to form an organic-inorganic interpenetrating network, so that excellent permeation resistance and diffusivity of vulcanized rubber are ensured, and the oil pressure change resistance is improved; and finally, a peroxide vulcanization system in which a vulcanization aid participates is matched to form a complete cross-linked structure, so that oil resistance and low temperature resistance are realized, excellent medium compatibility with low-viscosity synthetic oil is ensured, good compression set at a low temperature of-40 DEG C is ensured, and a rubber material with long-term heat aging resistance is stable.

The present application relates to a kind of environment-friendly water-based phenolic resin anticorrosive coating and its preparation process, belong to the field of coating technology.The coating is made of water-based phenolic resin emulsion, hyaluronic acid-lysine composition load nano SiO2-ZnO composite filler, synergistic anticorrosive filler, wetting dispersant, film forming aid, leveling thickener, defoaming agent and deionized water.The superhydrophilic of hyaluronic acid fundamentally solves the dispersion and storage stability problem of phenolic resin in aqueous phase, and the amino group of its lysine side chain can also chemically bond with resin during curing, significantly enhancing the adhesion, flexibility and interfacial bonding strength of coating.At the same time, nano SiO2, ZnO and synergistic anticorrosive filler construct a multiple synergistic anticorrosive network of physical shielding, sacrificial anode and chemical passivation, achieving long-term active protection.The whole system uses water as medium, selects bio-based raw materials and low VOC additives, and the environmental protection is outstanding.

The present application relates to a kind of high adhesive composite material for rubber dam and its preparation method, it is related to rubber dam technical field, wherein the high adhesive composite material for rubber dam includes the weatherproof layer of outer layer, the reinforcing layer of middle, inner layer self-repairing layer, by mass fraction, the weatherproof layer includes 90-110 parts high saturated nitrile rubber, 23-28 parts carbon black N550, 3-8 parts nano TiO2, 1-3 parts antioxidant 1010, 2-3 parts of dicumyl peroxide, the reinforcing layer includes 60-80 parts of ethylene-propylene-diene rubber, 25-35 parts of butadiene-styrene rubber, 13-15 parts, nylon fiber, 10-12 parts aramid fiber, 12-15 parts carbon black, 0.5-1.5 parts graphene, 1-2 parts of sulfur, 0.5-1.5 parts of accelerator CZ, the self-repairing layer includes 90-100 parts of silicone rubber, 5-10 parts nano SiO2, 5-8 parts self-repairing agent, 0.1-0.3 parts dispersant.The high adhesive composite material for rubber dam of the present application has good adhesion, can repair small crack in time, prevent the further expansion of crack.

The application relates to the technical field of impregnating agents and discloses an impregnating agent for basalt fiber composite materials, which contains, by mass fraction, 0.90-8.80% of modified epoxy resin, 2.53-3.72% of a coupling agent, 0.90-1.60% of a lubricant, 0.05-0.25% of nano SiO2, 0.90-5.35% of silicate ore powder, 1.65-4.30% of a water-based polyurethane dispersant, 0.1-3.25% of a polymerization inhibitor and the rest of solvent; the preparation method of the modified epoxy resin comprises the following steps: taking a hydrophilic intermediate, uniformly mixing the hydrophilic intermediate with epoxy resin base and solvent, adding a catalyst, heating, stirring, evaporating the solvent and obtaining the modified epoxy resin. The impregnating agent for basalt fiber composite materials has strong permeability for basalt fibers, and the impregnating agent has strong stability during use and can keep for a longer time without precipitation, so that the impregnating effect on basalt fibers is good as a whole.

The invention provides a silicon-carbon negative electrode material and a preparation method thereof. The preparation method of the silicon-carbon negative electrode material comprises the steps that (1) silicon-carbon ore, carbon black, a grinding aid, a dispersing agent and water are mixed and stirred evenly to obtain slurry, the silicon-carbon ore comprises micro-nano SiO2 and fixed carbon, the fixed carbon is porous, the specific surface area of the fixed carbon is 13-17 m < 2 > / g, the porosity of the fixed carbon is 30%-45%, the aperture of the fixed carbon is 15-25 nm, the pore volume of the fixed carbon is 0.10-0.18 cm / g, and D90 of SiO2 is smaller than 5 micrometers; (2) pumping the slurry into a bead mill for grinding until D90 is less than 1 [mu] m to obtain mixed slurry; (3) adding magnesium powder into the mixed slurry, uniformly stirring, filtering, drying in vacuum, and scattering to obtain mixed powder; and (4) calcining the mixed powder. The preparation method disclosed by the invention is simple in process flow, the silicon-carbon negative electrode material is prepared by grinding and refining the silicon-carbon ore and by a magnesiothermic reduction method, the production cost is low, and the prepared silicon-carbon negative electrode material has high specific capacity, coulombic efficiency and excellent cycle performance.

The invention discloses preparation and application of a quick response type perfluorohexanone microcapsule, and the perfluorohexanone microcapsule structurally comprises, from inside to outside, a core material which is made of perfluorohexanone and is used for realizing core functions of fire extinguishing and heat dissipation; the inner-layer wall material is directly coated on the surface of the core material and is a copolymer formed by a poly (N-isopropylacrylamide) monomer and polyethylene glycol, porous structures with the pore diameter of 50-200nm are uniformly distributed in the inner-layer wall material, rapid rupture is realized through molecular chain conformation transformation, and the inner-layer wall material is a core structure for rapid response of the microcapsule; the surface of the inner-layer wall material is coated with the outer-layer wall material, and the outer-layer wall material is formed by uniformly dispersing nano SiO2 in a PU matrix to form an enhanced network, so that the overall mechanical property is improved, and meanwhile, the temperature-sensitive response of the inner-layer wall material is not hindered; the perfluorohexanone microcapsule has the advantages of quick response, low response temperature, balanced mechanical properties and response characteristics, adjustable particle size and response temperature, high encapsulation efficiency and high storage stability.

The invention relates to the technical field of anti-rust materials, and discloses a metal anti-rust additive, an anti-rust agent and a preparation method of the metal anti-rust additive and the anti-rust agent. Comprising the following components in parts by weight: 30-50 parts of an organic carboxylic acid derivative, 10-25 parts of a heterocyclic compound, 15-30 parts of a silane coupling agent, 3-8 parts of an antioxidant, 1-3 parts of an organic-inorganic hybrid nanofiller, 1-3 parts of a pH-responsive self-repairing microcapsule and an organic solvent, the organic-inorganic hybrid nano filler is composed of silane coupling agent modified nano SiO2, and the pH response type self-repairing microcapsule takes chitosan as a shell material and takes a mixture of phytic acid, dodecenylsuccinic acid, benzotriazole and linseed oil as a core material. The metal antirust additive provided by the invention solves the problem that the existing metal antirust additive is difficult to realize long-acting antirust protection of metal products while ensuring an ultrathin oil film.

The invention belongs to the technical field of metallurgical binders, and particularly relates to a Bayer process red mud-based composite pellet binder, a preparation method thereof and iron ore pellets. The invention relates to a water-based adsorbent, which is prepared from the following components in percentage by mass: 60 to 80 percent of Bayer process red mud subjected to microwave-ultrasonic wave synergistic activation treatment, 10 to 25 percent of superfine slag powder, 2 to 8 percent of nano SiO2 and 1 to 5 percent of mixture of sodium lignin sulfonate and ammonium formate, the parameters of the microwave-ultrasonic wave synergistic activating treatment are as follows: the microwave power is 600 to 1000W, the ultrasonic wave frequency is 30 to 50kHz, and the treatment time is 20 to 40min. Compared with an existing technology of only microwave single activation or red mud-bentonite compounding, in the embodiment of the invention, microwave-ultrasonic wave synergistic activation and a mixture of superfine slag powder-nano SiO2-sodium lignin sulfonate and ammonium formate are introduced into the red mud-based binder in a ternary synergistic manner for the first time; and the problems of activity, strength and grade loss are synchronously solved on the premise of not introducing bentonite.

The invention relates to the technical field of polymer materials, in particular to a waterproof polymer film and a preparation method thereof. The waterproof polymer film specifically comprises the following components in parts by weight: 80-95 parts of polypropylene (PP) resin, 2-4 parts of an antibacterial agent, 3-6 parts of a compatilizer, 2-5 parts of a nano reinforcing agent and 0.1-0.5 part of an antioxidant. Through the synergistic effect of the compatilizer serving as a bridge, the nano SiO2 supported by a framework and the bonding type antibacterial agent which are added into a PP matrix, the waterproof polymer film has good mechanical property, waterproofness and lasting antibacterial property, and has a good application prospect.

The invention discloses activated phosphogypsum-polyurethane composite modified asphalt and an ultrasonic synergistic preparation method thereof, and belongs to the technical field of new materials for road engineering. According to the modified asphalt, matrix asphalt is used as a substrate, two-component polyurethane, phosphogypsum subjected to three-step activation treatment, a coupling agent and nano SiO2 are added, and the activated phosphogypsum is subjected to water washing, calcination at 500-600 DEG C and silane coupling agent grafting pretreatment, so that the compatibility with an organic phase is effectively improved; according to the preparation method, an ultrasonic and high-speed shearing synergistic process is adopted, uniform dispersion of all the components and full crosslinking of polyurethane are synchronously realized, and the high and low temperature performance, the anti-aging performance and the interface bonding force of the modified asphalt are remarkably improved in combination with the synergistic effect of nano SiO2. The core pain points of non-uniform phosphogypsum dispersion, insufficient polyurethane crosslinking and poor compatibility in the prior art are solved, resource utilization is realized, the process operability is high, and the road construction requirements are met.

The invention discloses a temperature and humidity dual-response type liquid crystal screen display packaging material and a preparation method thereof, and application of the temperature and humidity dual-response type liquid crystal screen display packaging material in liquid crystal screen display packaging. According to the preparation method, organic silicon resin, a silane coupling agent modified nano SiO2 / Al2O3 composite material, an intelligent response additive PNIPAM / PEG, an ultraviolet light absorber, a silane coupling agent and auxiliaries are used as raw materials, and the packaging material is obtained through the processes of premixing, vacuum defoaming, low-humidity vacuum curing and the like. By introducing an intelligent response additive system containing a temperature-sensitive polymer and a humidity-sensitive polymer, the packaging material is endowed with the capability of actively sensing and responding to the change of ambient temperature and humidity, so that the real-time and reversible regulation and control of key properties such as modulus, hardness, barrier property and the like are realized. The packaging material can more effectively protect a liquid crystal layer in a complex and changeable environment, the display stability and reliability of a liquid crystal screen are remarkably improved, and the service life of the liquid crystal screen is remarkably prolonged.

The present application relates to the technical field of organic fertilizer, in particular to a kind of livestock manure fermentation biological organic fertilizer and preparation method thereof.The preparation raw material of the organic fertilizer includes the following components by weight: pretreated livestock manure 60-80 parts, compound fermentation inoculum 0.5-1 part, nano SiO2-DA-MBA 4-6 parts, mixed traditional Chinese medicine residue 10-15 parts, polysaccharide extract 5-9 parts.

The invention provides a composite transfer printing film for a curved surface and a preparation method and application thereof, and relates to the technical field of transfer printing film preparation. The preparation method of the composite transfer printing film for the curved surface comprises the following steps that S1, a thin film with the thickness of 9-13 microns serves as a carrier, an organic silicon-acrylic acid compound is prepared, the carrier is coated with the organic silicon-acrylic acid compound, pre-curing is conducted for 1-2 min at the temperature of 70-90 DEG C, a release layer is formed, and the thickness of the release layer is 2-4 microns; s2, a PMMA blending solution containing 1-3 wt% of nano SiO2 is prepared to serve as functional layer slurry, the release layer is coated with the functional layer slurry, curing is conducted under the ultraviolet radiation energy of 500-600 mJ / cm < 2 > to obtain a functional layer, the thickness of the functional layer is 4-8 microns, and then plasma treatment is conducted for 30-40 s under the power of 300-400 W to obtain the composite transfer film. The thickness of the prepared composite transfer printing film is 15-25 [mu] m, the release force is 10-15 g / 25 mm, and the ductility is 100%-150%.

The invention discloses a pressure-sensitive adhesive protective film for ITO (indium tin oxide) glass, which comprises a polyester film substrate and an organic silicon pressure-sensitive adhesive layer coated on the surface of the polyester film substrate, and the organic silicon pressure-sensitive adhesive layer is formed by coating and curing a mixture; the mixture is prepared from 90 to 150 parts of high vinyl silicone oil, 90 to 150 parts of MQ silicon resin, 10 to 14 parts of hydrogen-based polysiloxane cross-linking agent, 5 to 12 parts of nano SiO2 filler, 4 to 10 parts of nano Al2O3 filler, 0.2 to 0.8 part of anchoring agent and 2 to 3 parts of antistatic agent; the vinyl content of the high vinyl silicone oil is 0.5 mmol / g to 1.2 mmol / g. Through the mode, according to the pressure-sensitive adhesive protective film for the ITO glass and the preparation method of the pressure-sensitive adhesive protective film, through an innovative material formula system and refined process design, the manufactured protective film overcomes the defects generated when an existing pressure-sensitive adhesive protective film is used for the ITO glass, the excellent scratch resistance is ensured, and meanwhile the pressure-sensitive adhesive protective film can be applied to the ITO glass. Extremely low film tearing voltage, controllable and stable moderate viscosity and high light transmittance are realized.

The present application relates to the technical field of tailings treatment, and particularly relates to a cementing agent for clay tailings cemented filling and a use method thereof, which comprises, in terms of weight fractions, 20-35 parts of fast-hardening sulphoaluminate cement, 8-15 parts of silica fume, 30-60 parts of activated slag powder, 10-20 parts of limestone powder, 5-15 parts of desulfurization gypsum, 6-10 parts of nano SiO2 / Al2O3 composite sol and 30-40 parts of magnesium phosphate-red mud activated microspheres; ions released by the magnesium phosphate-red mud activated microspheres destroy the interlayer hydrogen bonds of kaolinite, reduce the adsorption of free water by clay, cooperate with the fast-hardening sulphoaluminate cement to rapidly form a skeleton, solve the problem of insufficient hydration caused by the imbalance of the water-binder ratio of the cementing material, and meanwhile, the nano SiO2 / Al2O3 composite sol penetrates the clay gap by virtue of the nanoscale size and positive charge characteristics, and in combination with the silica fume and the slag powder, generates a gel in situ on the surface of the clay and constructs a cross-scale bonding network, so that the cementing material and the tailings particles are effectively bonded, the high-clay tailings are efficiently cemented, and the performance of the filling body is improved.

The application discloses a kind of proportion optimization and thermal stability test method of nano composite resistance gel foam material, and relates to the field of coal mine safety technology.The application includes: preparation of modified antioxidant and nano composite resistance gel foam material;The initial addition amount of gelling agent, crosslinking agent, foaming agent, foam stabilizer, nano SiO2 and modified antioxidant is sequentially optimized using single factor method;Using single factor optimization result as base point, six-factor quadratic regression model is constructed using Box-Behnken response surface method, to determine the global optimal proportion;Establish the thermal stability test method of 20-200 DEG C temperature gradient and 10-50 times foaming multiple coordination, to determine the half-life under each condition.The coal sample intersection temperature reaches 164.81 DEG C by two-step optimization strategy, the resistance rate is not less than 85%, and the half-life reaches 14 days;Thermal stability test method is in line with actual working condition of goaf, which can guide on-site construction parameter adjustment, and is used for prevention and control of coal spontaneous combustion in goaf.

The invention relates to the technical field of landscape building materials, in particular to a landscape concrete building block with energy storage and light emitting functions, which comprises a base structure layer and a light emitting functional layer, the light emitting functional layer is a surface layer with the thickness of 3-5mm and contains a pretreated long-afterglow light emitting material; the base layer and the light-emitting functional layer are formed in a layered pouring composite mode. The long-afterglow luminescent material is aluminate fluorescent powder of which the surface is subjected to organic-inorganic hybrid coating treatment, and the coating treatment of the long-afterglow luminescent material comprises the following steps: forming a nano SiO inorganic coating layer on the surface of the luminescent powder by adopting a sol-gel method, and the thickness of the coating layer is 10-20nm; the preparation method comprises the following steps: carrying out organic modification on nano SiO coated luminescent powder by adopting a silane coupling agent to form an organic-inorganic hybrid coating layer; the landscape building material provided by the invention has the energy storage and light emitting capabilities and does not need electricity, and the problems that a traditional landscape product is poor in visibility at night, the cost of installing lighting facilities is high, and an existing light emitting material is insufficient in durability are solved.

The present application relates to the technical field of concrete, and particularly relates to a kind of active powder concrete mixed with steel slag and a preparation process, comprising the following components: cement, pretreated steel slag powder, quartz powder, silica fume, functional additive, steel fiber, high efficiency water reducing agent;The functional additive includes modified LDHs material, repair agent and amino nano SiO2.Repair agent and modified LDHs material respond to Ca 2+ Concentration, release silicate, phosphate and oxalate, consume Ca 2+ / Mg 2+ Oxalate released from the outer layer of modified LDHs material forms interlayer vacancy, which efficiently captures phosphate and prevents its loss.Modified LDHs material surface is modified with quaternary ammonium salt, which further strengthens the capture of phosphate, and the inner layer of modified LDHs material slowly releases carbonate to generate stable calcium carbonate.Amino nano SiO2 can purify pore solution environment and provide strong mechanical support.

The present application relates to a kind of for CO2 thickening nano reinforced siloxane polymer system and its preparation method and application, belong to oilfield development technical field.The nano reinforced siloxane polymer system for CO2 thickening, including the following components: ester group modified siloxane polymer, modified nano SiO2 And cosolvent;The mass ratio of ester group modified siloxane polymer and cosolvent is 1:0.5-3;The mass fraction of modified nano SiO2 in the nano reinforced siloxane polymer system for CO2 thickening is 0.3-1.5%.The thickening system of the present application can be used for CO2 dry fracturing, can improve the viscosity of supercritical CO2 And improve its temperature resistance and shear resistance, with good solubility / dispersion stability and application prospect.

The invention belongs to the technical field of biodegradable high polymer materials, and discloses a barrier-antibacterial double-effect synergistic biodegradable fresh-keeping master batch and a preparation method and application thereof.The barrier-antibacterial double-effect synergistic biodegradable fresh-keeping master batch is prepared from, by weight, 40-60 parts of biodegradable polymer matrix and 20-30 parts of plasticized plant polysaccharide, 15-30 parts of a multifunctional nano-composite blocking agent and 5-10 parts of a compatilizer; wherein lamellar nano clay and hydrophobic nano SiOO loaded with plant essential oil are compounded to form a multifunctional nano composite blocking agent, fine dispersion and interfacial compatibilization of nano filler are realized in a PLA / PBAT matrix through a synergistic effect of a reactive compatilizer and plasticized plant polysaccharide, and through an innovative nano composite material formula and structural design, the nano composite material has excellent mechanical properties and mechanical properties. The barrier property and long-acting antibacterial property on water vapor and oxygen are synchronously realized, and the processability is good.

The invention discloses a nano-composite coating for eliminating partial discharge defects of electrical equipment as well as a preparation method and application of the nano-composite coating. The coating consists of a component A, a component B and a component C, wherein the component A is a coating main material and comprises a composite resin matrix formed by a block copolymer of amino-terminated polyether-polysiloxane and bisphenol A diglycidyl ether, a silane modified nano BN sheet, a composite nano filler formed by nano SiO2 and nano TiO2, and a hydrophobic gas-phase SiO2 filler anti-settling agent modified by an epoxypropane-ethylene oxide block copolymer; a coating layer of the paint has good toughness and electrical performance, can adapt to the construction environment of partial discharge defect elimination and insulation coating external damage prevention, and can provide good and long-term partial discharge defect elimination and external damage prevention protection force; meanwhile, the coating effectively solves the problem of nano agglomeration, provides powerful guarantee for long-term stable storage of the coating and adaptation to use requirements of partial discharge defect elimination and external damage, and has good practical value and popularization prospect.

The invention discloses mining and metallurgy solid waste-based shrinkage-compensating freeze-thaw-resistant concrete and a preparation method thereof, and belongs to the technical field of building materials. The freeze-thaw resistant concrete is prepared from the following components in parts by weight: 300 to 400 parts of cement, 150 to 200 parts of mineral admixture, 10 to 20 parts of expanding agent, 10 to 15 parts of granular foam stabilizer, 600 to 700 parts of fine aggregate, 1000 to 1300 parts of coarse aggregate and 4.5 to 12 parts of air-entraining type water reducing agent, the granular foam stabilizer is prepared from nano SiO2, palygorskite whiskers and cellulose ether. The concrete disclosed by the invention has better mechanical property and freezing resistance while ensuring good volume stability, meets the durability requirement on the concrete in the salt freezing environment in the northeast region, and can be used in long-life projects in the service environment.

The application discloses a chemical synthetic water solution and application thereof in metal surface insulation treatment, the chemical synthetic water solution comprises the following components in weight parts in unit volume: 1-5 parts of organic acid, 3-5 parts of gamma-glycidoxypropyltrimethoxysilane, 1-3 parts of methyltrimethoxysilane, 0.1-0.3 parts of inorganic reinforced phase precursor, 0.05-0.2 parts of rare earth salt, 0.2-0.8 parts of nano SiO2 and 85-95 parts of water. The method for carrying out insulation treatment on the metal surface by using the specific chemical synthetic water solution can grow a protective layer on the metal surface in situ, the grown protective layer has the characteristics of compactness and high strength, can be integrated with the base material, and thus excellent hardness, corrosion resistance, insulation and bonding force are obtained, and the method can be widely applied to the metal surface treatment industry.

The invention relates to the technical field of nano SiO2 aerogel, in particular to a preparation device of a composite thermal insulation material, which comprises a box body with a reaction bin and a drying bin; a portal frame is erected above the box body, and a cross beam is connected to the upper portion of the portal frame in a sliding mode; wherein a lifting assembly is arranged in the middle of the cross beam, a hanging frame is installed at the bottom of the lifting assembly, and a plurality of supporting assemblies for supporting a base material are arranged in the hanging frame. By adopting the design of integrating the reaction bin and the drying bin, a plurality of working procedures such as hydrolysis, coating, aging and drying are integrated in the same equipment; the continuous transfer of the base material among different treatment bins is realized, and the tedious manual or mechanical transfer in the traditional step-by-step operation is avoided, so that the overall processing efficiency is effectively improved; key reaction steps of hydrolysis, coating, aging and the like are sequentially completed on the base material in the reaction bin, so that the strength and the toughness of the nano SiO2 composite thermal insulation material are improved.

The present application relates to the technical field of ink preparation, and discloses a high-temperature-resistant and discoloration-resistant polyarylene ether nitrile modified ink and a preparation method thereof, the ink comprising a film-forming resin system, the film-forming resin system comprising polyarylene ether nitrile resin, epoxy resin and auxiliary resin; high-temperature-resistant inorganic pigment; antioxidant synergistic system; surface-modified nano inorganic barrier material; hydrolysable silane coupling type organic-inorganic hybrid precursor; curing agent; dispersant and rheological additive; wherein the antioxidant synergistic system comprises hindered phenolic antioxidant and phosphite auxiliary antioxidant; and the surface-modified nano inorganic barrier material is nano SiO2 modified by a silane coupling agent. The present application uses polyarylene ether nitrile as the main resin, optimizes the adhesion by epoxy modification, matches high-temperature-resistant inorganic pigment and anti-yellowing auxiliary agent, and controls moisture, dispersion uniformity and curing parameters throughout the process, so that the high-temperature-resistant and discoloration-resistant ink for automobile engine compartments can be successfully prepared.