3282 results about "Borinic acid" patented technology

The invention provides a silicon-carbon negative electrode material and a preparation method thereof. The preparation method comprises the following steps: a) mixing a phenol monomer, an aldehyde solution, ammonia water and water, dropwise adding a boric acid solution for reaction, and curing to obtain boron-containing phenolic resin; b) carbonizing the boron-containing phenolic resin obtained in the step a), mixing with alkali, and activating to obtain boron-doped porous carbon; and c) carrying out silicon deposition on the boron-doped porous carbon obtained in the step b) by adopting a gaseous silicon source, carrying out carbon coating by adopting a gaseous carbon source, and cooling to obtain the silicon-carbon negative electrode material. Compared with the prior art, the preparation method provided by the invention has the advantages that a conductive network can be formed by doping the boron element, the electron concentration can be improved, the electron transfer rate is favorably improved, the conductivity of the material is effectively enhanced, and the rate capability of the negative electrode material is effectively improved; meanwhile, the residual carbon rate in the porous carbon preparation process can be greatly increased, and the cost of the whole silicon-carbon negative electrode material is effectively reduced.

The invention discloses a preparation method of injectable nano composite hydrogel for relieving osteoarthritis, which comprises the following steps: firstly, synthesizing nano rod-like hydroxyapatite with the length of 150-300 nm and the diameter of 10-15 nm, and the hydroxyapatite is hydrophilic hydroxyapatite doped with strontium and europium ions; the preparation method comprises the following steps: by taking Ca (NO3) 2, Sr (NO3) 2, Eu (NO3) 3 and soluble phosphate as main raw materials, carrying out hydrothermal reaction to prepare strontium and europium ion co-doped hydrophobic hydroxyapatite, dispersing the strontium and europium ion co-doped hydrophobic hydroxyapatite in a Tris-HCl buffer solution, adding tannic acid, stirring, centrifugally collecting precipitate, and drying to obtain strontium and europium ion doped hydrophilic hydroxyapatite; the preparation method comprises the following steps: taking chondroitin sulfate and adipic dihydrazide as main raw materials, stirring, dialyzing, freeze-drying, and dissolving in a buffer solution to obtain the chondroitin sulfate solution grafted with the hydrazide group; the preparation method comprises the following steps: taking hyaluronic acid, 3-aminophenylboronic acid and sodium periodate as main raw materials, stirring, dialyzing, freeze-drying, and dissolving in a buffer solution to obtain the phenylboronic acid group grafted oxidized hyaluronic acid solution; the preparation method comprises the following steps: blending hydrophilic hydroxyapatite doped with strontium and europium ions, a chondroitin sulfate solution grafted with a hydrazide group, an oxidized hyaluronic acid solution grafted with a phenylboronic acid group and a recombinant collagen solution, and stirring to obtain the injectable nano composite hydrogel. The injectable nano composite hydrogel obtained by the invention has good biocompatibility, and a favorable local immune microenvironment can be created to immunomodulate macrophages so as to relieve osteoarthritis and promote subchondral bone repair.

The invention relates to the technical field of flame retardants, and discloses an enhanced ceramic zinc borate nano flame retardant and a preparation method thereof.The enhanced ceramic zinc borate nano flame retardant is obtained by adding ceramic zinc borate, a sulfur-containing flame retardant and sodium sulfonate modified silane into a stirrer and stirring. The enhanced ceramic zinc borate nano flame retardant is obtained by adding ceramic zinc borate, a sulfur-containing flame retardant and sodium sulfonate modified silane into a stirrer and stirring. Boron elements, sulfur elements, phosphorus elements, silicon elements and sodium sulfonate groups in the sulfur-containing flame retardant and the sodium sulfonate modified silane jointly form a flame-retardant system, and synergistic flame retardance is achieved.

The invention discloses a green phosphorus-free and nitrogen-free corrosion and scale inhibitor, and relates to the technical field of energy-saving and environment-friendly water treatment agents. The corrosion and scale inhibitor is prepared from polyaspartic acid, hydrolytic polymaleic acid, acrylic acid / hydroxypropyl acrylate copolymer, polyepoxysuccinic acid, delta-valerolactam, sodium borate, zinc sulfate heptahydrate and benzotriazole according to a specific proportion. The preparation method comprises the following steps: preparing the modified polyaspartic acid, adding other components, mixing the modified polyaspartic acid and other components, adjusting the pH value, homogenizing, filtering, filling and the like. The corrosion and scale inhibitor has excellent corrosion and scale inhibition performance, the corrosion inhibition efficiency of the corrosion and scale inhibitor reaches up to 88.6%, and the scale inhibition rate ranges from 90.5% to 92.4%. Compared with a contrast agent, the efficient corrosion and scale inhibition performance is provided, meanwhile, the water treatment agent has the advantages of being environmentally friendly, economical and the like, and is a green water treatment agent with great application prospects.

The invention belongs to the technical field of flame-retardant materials, and particularly relates to a phenylboronic acid-based P / N / B-containing halogen-free flame retardant, a preparation method thereof and application of the phenylboronic acid-based P / N / B-containing halogen-free flame retardant in epoxy resin. The preparation method comprises the following steps: by taking diphenyl hypophosphorous chloride as a basis, preparing a flame-retardant intermediate through nucleophilic substitution reaction between diphenyl hypophosphorous chloride and an aldehyde group-containing phenolic compound, then reacting a phenylboronic acid structure with 3-amino-1, 2-propylene glycol to obtain an amino group-containing phenylboronic acid compound, and finally reacting the phenylboronic acid compound with 3-amino-1, 2-propylene glycol to obtain the amino group-containing phenylboronic acid compound. And finally, carrying out a Schiff base reaction on the flame-retardant intermediate and an amino-containing phenylboronic acid compound to obtain the halogen-free flame retardant containing phosphorus, nitrogen and boron elements. The flame retardant provided by the invention can significantly improve the flame retardant property and mechanical property of epoxy resin. A flame-retardant epoxy resin prepared based on the flame retardant; the influence on Tg of an epoxy resin cured product is small, the smoke suppression and char formation performance and the mechanical performance of the cured product can be remarkably improved, and meanwhile, the flame retardant has excellent flame retardant efficiency; the limit oxygen index of the flame-retardant epoxy resin can reach 31%; the vertical combustion grade is V-0 or above, and the carbon residue amount can reach 18% or above.

The invention particularly relates to a method for predicting the service life of a boric acid solution corrosion concrete member in a nuclear power plant. The method comprises the following steps: determining boric acid solution accelerated corrosion concrete member test control parameters; based on the boric acid solution accelerated corrosion concrete member test control parameters, boric acid solution accelerated corrosion concrete member tests are carried out in groups; constructing a boric acid solution corrosion concrete member life prediction model based on boric acid solution accelerated corrosion concrete member test data; and predicting the boric acid solution corrosion concrete member service life based on the boric acid solution corrosion concrete member service life prediction model. According to the method, a model for predicting the service life of the concrete member corroded by the boric acid solution is established by considering the water-binder ratio of the concrete, the temperature, the concentration of the boric acid solution and the corrosion time on the basis of research test results of physical properties and macroscopic mechanical properties of the concrete member corroded by the boric acid solution or field actual measurement data; and the service life of the boric acid solution corroded concrete member is predicted.

The invention provides a self-repairing and self-adhering nano composite hydrogel material as well as a preparation method and application thereof. The self-repairing and self-adhering nano composite hydrogel material provided by the invention comprises a boric acid derivative modified first monomer, a second monomer and a conductive filler. A macromolecular network formed by the two monomers generates crosslinking through reversible interaction so as to improve the mechanical strength of the hydrogel, and meanwhile, the hydrogel is endowed with reliable self-repairing performance; in addition, a macromolecular chain of the hydrogel contains more free active groups, and the hydrogel can be adhered to materials such as skin through reversible interaction among the groups. The doping of the conductive filler is also beneficial to improving the mechanical property, the conductivity and the sensing property of the hydrogel, so that a flexible wearable sensor assembled by the hydrogel can sensitively and stably monitor a human body motion signal and an electrophysiological signal.

The invention discloses a UV photocureable coating as well as a preparation method and application thereof in automobiles, and relates to the technical field of coatings. When the UV photocureable coating is prepared, 4-aminophenylboronic acid is dehydrated to prepare aminated boron oxygen six-ring; carrying out a reaction on the aminated boroxane and diallyl chlorophosphate to prepare functionalized boroxane; the preparation method comprises the following steps: sequentially reacting graphene oxide with 3-chloropropyltriethoxysilane and 1, 3-diallyl-1, 3, 5-triazine-2, 4, 6-triketone, so as to obtain modified graphene; the preparation method comprises the following steps: reacting epoxy resin with 2-butenal thiosemicarbazone to prepare modified epoxy resin; and uniformly mixing the modified epoxy resin, the epoxy acrylate resin, the modified graphene, the functionalized boroxane, the 1, 6-hexanediol diacrylate and the 1-hydroxycyclohexyl phenyl ketone, so as to obtain the UV photocureable coating. The UV photocureable coating prepared by the invention has excellent flame retardant, self-repairing and mechanical properties.

The invention relates to the technical field of flame retardance, and discloses a flame-retardant coating and a preparation method thereof.The flame-retardant coating is obtained by adding phenolic resin, polycarbonate, phosphorus-containing modified phenolic resin, boric acid-containing benzoxazine, an organic silicon resin defoaming agent, a propylene glycol film-forming agent and water into a stirrer and stirring. The flame-retardant coating contains a large amount of anacardol, long chains in the anacardol can also be crosslinked to form a net-shaped structure, a net-shaped carbon skeleton structure is formed under high-temperature carbonization, degradation products are inhibited during combustion, and the flame-retardant coating has good fire resistance; wherein oxazolidinone generated by reaction of an epoxy group of epoxidized phenolic resin and an isocyanate group of hexamethylene diisocyanate is a heterocyclic ring with very high heat resistance and also plays a role in synergistic fire resistance; the flame-retardant coating contains a large amount of phosphorus elements, sulfur elements and nitrogen elements, has a good flame-retardant effect, and achieves a synergistic flame-retardant effect.

The invention relates to the technical field of automobile tires, and discloses a new energy automobile tire self-repairing sealing material adhered with mute cotton. The preparation method comprises the following steps: adding a modified polyurethane adhesive, C5 petroleum resin and a modified carbon nanotube filler into absolute ethyl alcohol, mixing to obtain a self-repairing liquid, adhering polyurethane cotton to the upper part of the self-repairing liquid, and drying to obtain the new energy automobile tire self-repairing sealing material adhered with the mute cotton. Disulfide bonds, boric acid ester bonds and imine bonds introduced into polyurethane through a chain extension reaction and diselenide bonds introduced into carbon nanotubes all belong to dynamic covalent bonds, so that the self-repairing performance of the material is improved; by introducing a rigid benzene ring and naphthyl aromatic structure, the mechanical property of the self-repairing sealing material is improved; the carbon nano tube can play a role in skeleton supporting in a polyurethane matrix, and the mechanical property of the material is further improved by introducing an adamantane rigid structure into the carbon nano tube.

The invention discloses a concrete composite tackifier and a preparation method thereof, and relates to the technical field of concrete. When the concrete composite tackifier is prepared, firstly, polyacrylic resin obtained by polymerizing acrylic acid, methyl methacrylate, acrylamide and vinyl diphenylphosphine reacts with modified porphyrin, and then sulfonation is performed to obtain modified polyacrylic resin; the preparation method comprises the following steps: firstly, pre-treating silica fume with vinyltrimethoxysilane, then carrying out a reaction on the silica fume pre-treated with vinyltrimethoxysilane, tetravinyltetramethylcyclotetrasiloxane and vinylboronic acid pinacol ester to obtain modified silica fume, and finally, mixing polyacrylic resin and the modified silica fume to obtain the concrete composite tackifier. The concrete composite tackifier prepared by the invention has good working performance and antibacterial property.

The invention discloses a modified nickel-cobalt-aluminum ternary positive electrode material, a preparation method thereof and a lithium battery, the modified nickel-cobalt-aluminum ternary positive electrode material provided by the invention comprises a bulk phase material and a coating layer coating the surface of the bulk phase material, the coating layer is composed of boric acid and at least one of transition metal nitride containing effective metal and aluminum-containing metal oxide. According to the invention, at least one of the binary compound containing the effective metal or the aluminum-containing metal oxide and the boric acid are used as the composite coating source for composite coating, so that the coating effect of the nickel-cobalt-aluminum ternary positive electrode material is optimized, and the ultrahigh nickel-nickel-cobalt-aluminum ternary positive electrode material with better physical and chemical properties is prepared. Meanwhile, the problems that the material is poor in structural stability, high in residual alkali content, relatively low in capacity and poor in rate and cycle performance exertion are solved.

The invention discloses a heavy metal chelating agent for industrial wastewater and a preparation method of the heavy metal chelating agent, and belongs to the technical field of sewage treatment.The preparation method comprises the steps that 2-hydroxyphenylboronic acid is subjected to graft modification through acrylic acid and polymerized on the surface of activated biomass porous carbon powder with acrylic acid, boron-containing polymer modified porous carbon is obtained, and then ferric chloride hexahydrate serves as an iron source; a boron-containing polymer modified porous carbon surface and aminated magnetic adsorption nanospheres are obtained, B-N coordination is formed between the aminated magnetic adsorption nanospheres and the boron-containing polymer modified porous carbon surface, boron element fixation is achieved through modified copolymerization, loss caused by long-time use of the boron element is avoided, lasting and stable chelation is guaranteed, activated biomass porous carbon serves as a carrier, and macromolecular resin serves as a coating layer. The environment-friendly biochar has the advantages of favorable degradability, greenness, degradability, safety and high efficiency, and avoids the problem of secondary pollution caused by the use of a chelating agent.

The invention provides a preparation method and application of boron isotope separation resin microspheres. The preparation method comprises the following steps: (1) adding dimethyl sulfoxide into polystyrene-divinylbenzene resin microspheres to swell for 3 hours, adding concentrated sulfuric acid to treat until the sulfonation rate is 0.3-0.4 meq / g, washing with water, treating with an ammonium chloride aqueous solution, washing with water, drying in vacuum, atomizing and spraying a ferric chloride-ferrous chloride aqueous solution, evaporating in vacuum to remove part of water, and introducing ammonia-containing nitrogen flow to treat to obtain polystyrene-divinylbenzene resin microspheres; and washing with water, grinding the surface, treating with a sodium hydroxide aqueous solution and washing with water. The boron isotope separation resin microspheres are suitable for chromatographic separation of 10B and 11B in a boric acid-sodium hydroxide aqueous solution with the pH of 6-7.5, a desorption solution is pure water, the feeding rate is 0.3-0.6 m / h, and a boric acid-containing aqueous solution enriched with 10B can be obtained; the service life of the chromatographic column is more than 6 months, the adsorption separation performance is reduced by not more than 20%, and the chromatographic column has a certain application prospect.

The invention relates to the technical field of cables, in particular to a high-toughness halogen-free flame-retardant crosslinked cable and a preparation method thereof.High-density polyethylene, ethylene-vinyl acetate copolymer, modified MXene and auxiliaries are mixed and co-extruded, and ultraviolet radiation crosslinking is adopted to prepare a reinforcing layer of the cable; the preparation method comprises the following steps: firstly, coating MXene with dopamine, treating with tert-butyldimethylsilyl chloride, then grafting DOPO (9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide), and then introducing double bonds on the composite MXene; a self-repairing polyurethane emulsion, modified MXene and a photoinitiator are blended to prepare a protective coating, the surface of the reinforcing layer is coated with the protective coating, light curing treatment is carried out, and the water-resistant and corrosion-resistant protective layer sleeve with the self-repairing surface is prepared; a chain extender containing boric acid ester bonds and disulfide bonds is added in the preparation of the self-repairing polyurethane emulsion, and pentaerythritol triacrylate is used as a photosensitizer.

The invention belongs to the field of ceramic material production, and relates to a high-thermal-conductivity silicon carbide ceramic material and a preparation method thereof. The preparation method comprises the following steps: mixing silicon carbide powder, cane sugar, boric acid, a dispersing agent and water to prepare slurry; on the basis that the total mass of the silicon carbide powder, the carbon element obtained after cane sugar is debonded, the boron element in the boric acid and the dispersing agent is 100 wt.%, the adding amount of the carbon element obtained after cane sugar is debonded is 1.0 wt.%-2.5 wt.%, and the adding amount of the boron element in the boric acid is 0.1 wt.%-0.3 wt.%; drying, sieving, forming and debonding the slurry to obtain a ceramic body; and sintering the ceramic green body at normal pressure to obtain the high-thermal-conductivity silicon carbide ceramic material. The water-soluble sucrose and boric acid are added as sintering aids to be mixed with the silicon carbide powder, so that the uniform dispersity of the sintering aids is improved, and finally, the use amount of the sintering aids is effectively reduced while the sintering densification of the ceramic is ensured, thereby reducing the adverse effect of a second phase and internal impurities on the thermal conductivity of the silicon carbide ceramic as much as possible.

The invention provides a borate loaded alpha-Fe2O3 photo-anode as well as a preparation method and application thereof, and belongs to the technical field of material science and photoelectrocatalysis. The preparation method comprises the following steps: S1, growing a beta-FeOOH film on FTO (Fluorine-doped Tin Oxide) conductive glass by utilizing a hydrothermal method; s2, the beta-FeOOH thin film is subjected to high-temperature annealing treatment in an inert atmosphere, and an alpha-Fe2O3 thin film is obtained; and S3, the alpha-Fe2O3 thin film is put into a boric acid solution to be soaked, then the soaked alpha-Fe2O3 thin film is subjected to low-temperature annealing treatment in an inert atmosphere, a borate thin film is formed on the surface of the alpha-Fe2O3 thin film, and the borate-loaded alpha-Fe2O3 photo-anode is obtained. According to the preparation method, the problems that alpha-Fe2O3 is poor in conductivity, low in charge transfer efficiency, high in overpotential of oxygen evolution reaction and the like are solved by means of the strategies of ion doping and surface loading of borate in the step S3, the photoelectrochemical performance of alpha-Fe2O3 is improved, and the borate loaded alpha-Fe2O3 photo-anode meets the application requirement in a photoelectrochemical cell.

The invention relates to the technical field of welding, in particular to a lead-free solder composition and a preparation method thereof. The composition comprises brazing filler metal and a brazing flux, wherein the brazing filler metal comprises 55 to 65 parts of copper, 30 to 40 parts of zinc, 0.5 to 1 part of silver, 0.1 to 1 part of tin, 0.1 to 0.5 part of nickel, 0.02 to 0.15 part of lanthanum, 0.03 to 0.15 part of cerium and 0.05 to 0.2 part of indium; the brazing flux comprises 18-22 parts of borax, 13-17 parts of boric acid, 25-32 parts of a potassium fluoride and potassium fluoborate compound, 3-5 parts of calcium fluoride, 12-16 parts of aluminum oxide and 8-11 parts of magnesium oxide. The lead-free solder composition does not contain toxic lead elements, pollution to the environment and the ecological system is little, the wettability, corrosion resistance, strength, stability and the like of the lead-free solder composition are improved, and the welding quality is comprehensively improved. According to the preparation method, uniform distribution and accurate control of the brazing filler metal and the brazing flux are guaranteed, stability and consistency of product quality are guaranteed, and the preparation method is easy and convenient to operate and suitable for mass production.

The invention relates to the technical field of additive processing, and particularly discloses an additive for mixing raw materials of a carbon-based ceramic friction material and a preparation method of the additive. The preparation method comprises the following steps: mixing a treated multi-walled carbon nanotube with a sodium borate and ethylenediamine aqueous solution, calcining at high temperature to obtain a boron nitride-loaded multi-walled carbon nanotube, and combining with a cross-linking agent to prepare a functional filler; adding ethylenediamine, 3, 3-diphenylpropylamine and palladium acetate into the prepared N-methyl pyrrolidone and polyether-ether-ketone solution to obtain modified polyether-ether-ketone; and mixing the modified polyether-ether-ketone, a functional filler, an antioxidant, a lubricant and N, N-dimethylformamide to obtain the additive for mixing the raw materials of the carbon-based ceramic friction material. The additive provided by the invention has good compatibility, can significantly improve the processing molding performance and mechanical strength of the friction material, and effectively reduces the wear rate.

The invention relates to a glass bead, in particular to a high-refractive-index large-particle-size glass bead for road marking and a spheroidizing forming preparation method of the high-refractive-index large-particle-size glass bead. The material comprises the following components in parts by weight: 30 to 40 parts of titanium dioxide, 30 to 40 parts of silicon dioxide, 10 to 15 parts of barium nitrate, 10 to 15 parts of zirconium nitrate, 5 to 7 parts of zinc oxide, 3 to 5 parts of boric acid, 3 to 5 parts of calcium fluoride, 5 to 110 parts of Nb2O5 and 5 to 15 parts of a La2O3-ZrO2 compound. According to the invention, calcination is carried out at 900 DEG C for 12 hours, which is helpful for improving the thermal stability and mechanical strength of the glass beads, so that the glass beads can be used for a long time in a severe outdoor environment and are not easy to damage. And at the high temperature of 1300 DEG C and the spraying speed of 75 m / s, through precise intersection of the two nozzles in the combustion chamber, precise control over the melting and forming process of the glass beads is ensured, and therefore the high-quality high-refractive-index glass beads are obtained. The Nb2O5 and La2O3-ZrO2 compound is added, so that the refractive index of the glass beads is improved, and a relatively high yield is maintained.

The invention discloses a corrosion-resistant polypropylene edge band material and a preparation method thereof, and belongs to the technical field of preparation of edge band materials. The corrosion-resistant polypropylene edge sealing strip material is prepared from, by weight, 50-75 parts of polypropylene, 2-5 parts of an antioxidant, 3-6 parts of a corrosion-resistant agent, 2-4 parts of a composite flame retardant, 8-15 parts of calcium carbonate and 2-4 parts of dye, the corrosion-resistant agent is prepared from 2, 6-dichlorobenzonitrile, 1, 2, 4-triazole, a sulfuric acid solution, sodium nitrite and parachloroaniline, and the corrosion-resistant agent is prepared from 2, 6-dichlorobenzonitrile, 1, 2, 4-triazole, a sulfuric acid solution, sodium nitrite and parachloroaniline. The composite flame retardant is prepared from 3-glycidyl ether oxypropyl trimethoxy silane, diphenyl silanediol, barium hydroxide and boric acid. The edge band material prepared by the method has excellent corrosion resistance, flame retardance, heat resistance and mechanical properties.

The invention discloses a flame retardant with a double-layer microcapsule structure, a flame-retardant polyurethane material as well as a preparation method and application of the flame-retardant polyurethane material, and belongs to the technical field of flame retardants. The material is a multifunctional flame retardant with a double-layer core-shell structure, a shell layer is calixarene boric acid resin, a middle shell layer is melamine phthalic anhydride resin, and a core layer is hydroxyapatite modified aluminum hypophosphite. Due to the high cross-linking degree between polymers, the flame retardance of polyurethane is improved, meanwhile, the mechanical property of the polyurethane is improved, and the flame retardance and seawater corrosion resistance of the material are synergistically enhanced through hydroxyapatite dispersed in the core layer. The double-shell layer has excellent hydrophobicity, prevents internal aluminum hypophosphite from being affected with damp and has anti-fouling and self-cleaning effects, and the prepared flame-retardant polyurethane composite material has excellent tensile and flexible characteristics due to a double network of hydrogen bonds and covalent bonds.

The invention discloses a two-photon polymerization 3D printing photoresist based on a boric acid ester bond and a preparation method thereof. The photoresist comprises a functional monomer containing the boric acid ester bond, a multifunctional acrylate monomer and a two-photon initiator, according to the two-photon polymerization 3D two-photon printing photoresist prepared by adopting the functional monomer containing the dynamic boric acid ester bond to reinforce and toughen conventional acrylic ester, the performance of resin is regulated and controlled by using different types of boric acid ester monomers and adding different proportions of boric acid ester monomers, the mechanical strength of the obtained photoresist can be regulated and controlled, and the performance of the photoresist is improved. Different parameters such as printing effect, hot residual weight and the like can be selected for a final application scene, and the method has a very wide application prospect.

The invention relates to the technical field of cables, and particularly discloses a high-performance halogen-free flame-retardant flexible power cable. The high-performance halogen-free flame-retardant flexible power cable comprises a core layer, an insulating layer, a flame-retardant layer, a shielding layer and a protective layer which are arranged in sequence, the flame-retardant layer is prepared from the following raw material components in parts by weight: 30 to 40 parts of ethylene-vinyl acetate copolymer, 10 to 20 parts of polyolefin elastomer, 8 to 10 parts of microencapsulated ammonium polyphosphate, 2.5 to 4.5 parts of pentaerythritol, 20 to 30 parts of inorganic flame retardant, 5 to 8 parts of expansible graphite, 2 to 3 parts of diatomite, 0.5 to 1.5 parts of nano kaolin, 2 to 3 parts of zinc borate, 0.1 to 0.5 part of antioxidant and 0.5 to 1.0 part of lubricant. The cable provided by the invention not only has good flame retardant property, but also has certain flexibility.

The invention relates to blue high borosilicate glass and a preparation method thereof, and belongs to the technical field of glass manufacturing, and the blue high borosilicate glass comprises the following raw materials in parts by weight: 50-60 parts of silicon dioxide, 10-15 parts of boron oxide, 2-3 parts of aluminum oxide, 6-8 parts of alkali metal oxide, 3-4 parts of a compound clarifying agent and 1-3 parts of a modified coloring agent. According to the technical scheme, the cobalt blue pigment is coated with mesoporous silica, and the composite material is obtained; combining the composite material with a silane coupling agent to obtain a silanized composite material; combining the silanized composite material with boric acid ester to obtain a modified coloring agent; the prepared modified coloring agent enables the high borosilicate glass to have remarkable blue color and to be stable in color and not prone to volatilization under high-temperature and high-pressure conditions, the added composite clarifying agent is formed by mixing cerium dioxide, sodium sulfate and tin oxide, the clarity of the glass is improved, volatilization of boron is effectively reduced, and the service life of the glass is prolonged. The mechanical property and the stability of the high borosilicate glass are generally improved, and the quality of the glass is improved.

The invention relates to the technical field of high polymer materials, and provides an anti-aging cable and a preparation method thereof. The anti-aging cable comprises a conductor and a sheath layer, the sheath layer is prepared from the following raw materials in parts by weight: 40 to 60 parts of ethylene propylene diene monomer, 20 to 30 parts of ethylene-vinyl acetate copolymer, 20 to 22 parts of nano cellulose / montmorillonite composite material, 5 to 10 parts of nano silicon dioxide, 10 to 20 parts of magnesium hydroxide, 5 to 8 parts of zinc borate, 1.5 to 3 parts of composite antioxidant, 0.5 to 1.5 parts of ultraviolet light absorber, 1 to 1.2 parts of anti-aging agent and 1 to 2 parts of silane coupling agent. And 0.3 to 0.5 part of maleic anhydride grafted polypropylene. According to the anti-aging cable prepared in the invention, the high temperature resistance and the acid corrosion resistance of the anti-aging cable are improved, and the aging of the cable is effectively delayed.

The invention relates to the technical field of electrocatalysts, in particular to a boron-doped ruthenium dioxide hollow fiber catalyst and a preparation method and application thereof. The preparation method comprises the following steps: preparing calcium alginate fibers from sodium alginate as a raw material through a wet spinning process, mixing the calcium alginate fibers with a boric acid solution, washing and drying to obtain boric acid cross-linked calcium alginate fibers, fully mixing the boric acid cross-linked calcium alginate fibers with a ruthenium trichloride solution, drying to obtain a boric acid cross-linked ruthenium alginate fiber precursor, and carrying out pyrolysis treatment to obtain the boric acid cross-linked ruthenium alginate fiber. Ruthenium ions are converted into ruthenium dioxide nano-particles, boric acid cross-linked alginate fibers are converted into hollow fibers, and boron atoms are doped into ruthenium dioxide crystal lattices to form the boron-doped ruthenium dioxide oxygen evolution reaction electrocatalyst. The boron-doped ruthenium dioxide hollow fiber can be used as a proton exchange membrane electrolytic bath and an electrolyzed water catalyst with excellent performance, and has relatively high catalytic activity and good stability. The raw materials are wide in source, expensive equipment is not needed, and large-scale preparation can be performed.

The invention belongs to the technical field of insulating flame-retardant adhesive tapes, and particularly relates to an insulating flame-retardant adhesive tape and a preparation method thereof. According to the invention, phytic acid reacts with 3-amino-5-methylpyrazole, triaminopyrimidine and polyether amine-2000 to prepare a flame-retardant auxiliary agent, and the flame-retardant auxiliary agent is compounded with magnesium hydroxide, zinc borate and melamine to prepare a modified flame retardant which can generate an expansive carbon layer during combustion to block heat and isolate oxygen so as to achieve a flame-retardant effect; an aluminum oxide layer generated on the artificial diamond micro-powder is used as an insulating heat-conducting aid, so that the insulativity, wear resistance and corrosion resistance of the insulating flame-retardant adhesive tape are improved, the adhesive tape can be assisted in uniform heat conduction, and combustion caused by over-high local temperature is prevented; epoxy resin is used for wrapping the uniformly dispersed insulating heat-conducting auxiliary agent, and anisyl and boron nitride ceramic powder are cured to prepare an insulating material, so that the dielectric breakdown performance of the adhesive tape is enhanced. The insulating flame-retardant adhesive tape prepared by the invention is excellent in insulativity and flame retardance and free of halogen flame retardants, and the production process is environment-friendly.

The invention discloses a coating type high-molecular flame-retardant material. The composite material is prepared from the following components: organic silicon modified epoxy resin, a bio-based castor oil derivative, hydroxyapatite, carbon nanofibers, expanded graphite, ammonium polyphosphate, zinc borate, nano silicon dioxide, molybdenum oxide, microencapsulated red phosphorus, magnesium hydroxide, melamine cyanurate, aluminum diethylphosphinate, pentaerythritol, trihydroxymethyl phosphine oxide and a silane coupling agent. The coating is prepared from a titanate coupling agent, stearic acid, polyethylene glycol, 2, 6-butylated hydroxytoluene, triphenyl phosphite, 2, 4-dihydroxybenzophenone, sebacic diester, polytetrafluoroethylene micro powder, a modified polydimethylsiloxane flatting agent, organic montmorillonite, a polyether modified silicon defoaming agent and a solvent. The invention has the beneficial effects of high flame retardant efficiency, environmental friendliness, excellent comprehensive performance and excellent processability.

The invention belongs to the technical field of preparation of boron carbide ceramics, and particularly relates to a method for preparing light boron carbide ceramics by taking coconut shells as raw materials, which comprises the following steps of: performing high-temperature carbonization, crushing, grinding and sieving on the coconut shells as the raw materials to obtain carbon powder, fully evaporating and crosslinking a uniform mixture of the carbon powder, boric acid and trihydroxymethyl aminomethane to obtain gel, and drying the gel to obtain the light boron carbide ceramics. According to the preparation method, the gel is converted into precursor powder by using a combustion method, and finally, the porous boron carbide ceramic is obtained through dry pressing molding and high-temperature sintering, so that the two processes of boron carbide powder preparation and pore forming are integrated, the preparation process flow of the light boron carbide ceramic is effectively simplified, and the efficiency is improved.