1195 results about "Borinic acid" patented technology

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.

This invention discloses a visible-light-responsive dynamically covalently cross-linked self-healing polyurethane and its preparation method, belonging to the field of self-healing materials technology. The material is prepared by reacting diisocyanate, long-chain diol, butanediol, trimethylolpropane, and a monool containing an azophenylboronic acid structure in a certain proportion at 60°C. This invention achieves visible-light-responsive self-healing of the polyurethane material by introducing a visible-light-responsive azophenylboronic acid structure into the polyurethane and utilizing the photoresponsive cis-trans isomerization of the azo structure to regulate the reversible breakage and recombination of the boron-oxygen hexacyclic ring. The visible-light-responsive dynamically covalently cross-linked self-healing polyurethane material prepared by this invention maintains high mechanical strength (16.47 MPa) while exhibiting a strength self-healing efficiency of 95.8% after 8 hours of visible light irradiation, showing broad application prospects in smart materials, anti-corrosion coatings, and other fields.

The invention relates to the technical field of metal material hot working, and discloses a hot-rolled coiled plate production process which comprises the following steps: preparing a reaction type protective agent, the high-temperature-resistant coating is prepared from the following raw materials in parts by weight: 20 to 40 parts of tetraethoxysilane, 5 to 15 parts of triethyl phosphate, 1 to 5 parts of triethyl borate, 0.5 to 2.0 parts of cerous nitrate (III) hexahydrate, 0.1 to 1.0 part of lithium acetate and 0.01 to 0.05 part of vanadyl acetylacetonate (IV). Coating the surface of a hot-rolled plate blank with the protective agent; the coated plate blank is heated in a heating furnace, so that the protective agent forms a molten-state protective layer in situ; carrying out hot rolling on the plate blank with the molten protective layer; and cooling and coiling the hot-rolled steel strip. In the whole heating and hot rolling process, the molten protective layer isolates the contact between the steel and the oxidizing atmosphere, so that the generation of oxide scales is fundamentally inhibited, the production process is simplified, and the metal yield is increased.

The invention discloses a preparation method of a rubber waterstop material with a low compression set rate, which comprises the following steps: firstly, carrying out blending reaction on hydroxyl silicone oil and boric acid to obtain liquid polyborosiloxane; the preparation method comprises the following steps: adding liquid polyborosiloxane and natural rubber into an internal mixer according to a ratio, and carrying out internal mixing to obtain a mixture; adding zinc oxide, an anti-aging agent, stearic acid and an anti-tearing agent into the obtained mixture, and continuously mixing; continuously adding kaolin talcum powder, calcium carbonate, calcium oxide, white carbon black, N550, N330 and KH550, and internally mixing again to obtain a preform; adding a vulcanization accelerator and a vulcanizing agent into the preform, and continuously mixing to obtain a rubber material to be vulcanized; and vulcanizing and forming the rubber material to be vulcanized to prepare the rubber water-stop belt material with the low compression set rate. According to the invention, the compression set rate of the rubber material can be reduced while the tensile strength, elongation, tear resistance and other properties of the rubber are not sacrificed, so that the product performance is enhanced.

The invention relates to a composite powder explosion suppressant for suppressing aluminum hydride explosion and a preparation method of the composite powder explosion suppressant, belongs to the technical field of explosion suppressants, and solves the problems of single action mechanism, high required explosion suppression concentration, low efficiency and the like of a traditional explosion suppressant. According to the solution, the composite powder explosion suppressant for suppressing aluminum hydride explosion is prepared through raw material pretreatment, powder mixing and drying in sequence, and the composite powder explosion suppressant is prepared from the following components in parts by mass: 10.2 to 30.2 parts of melamine cyanurate, 20.4 to 40.6 parts of monopotassium phosphate, 15.2 to 25.2 parts of potassium bicarbonate, 8.4 to 13.2 parts of aluminum hydroxide, 6.8 to 11.1 parts of zinc borate, 5.0 to 9.0 parts of fumed silica and 2.0 to 5.3 parts of calcium silicate. The explosion suppressant can act on different combustion areas and combustion stages in the aluminum hydride explosion process, the physical and chemical explosion suppression effects of all the components of the explosion suppressant are fully exerted, and meanwhile, efficient explosion suppression of aluminum hydride explosion can be achieved through the synergistic effect of all the components.

The invention relates to the technical field of epoxy resin, in particular to self-repairing epoxy resin and a preparation method thereof. The self-repairing epoxy resin is prepared from the following raw materials in parts by mass: 80 to 120 parts of bisphenol A type epoxy resin, 20 to 40 parts of bisphenol F type epoxy resin, 5 to 15 parts of 1, 6-hexanediol diglycidyl ether, 1 to 3 parts of 3, 5-dimethylphenylboronic acid, 1 to 5 parts of furyl maleimide, 10 to 20 parts of dodecanedioic acid, 5 to 15 parts of butanetetracarboxylic acid, 1 to 3 parts of catalyst, 10 to 15 parts of nano silicon dioxide, 1 to 2 parts of boron nitride nanosheet and 1 to 2 parts of hyperbranched polyamidoamine. The curing agent is prepared from the following components in parts by weight: 20-30 parts of epoxy resin, 1-2 parts of sulfydryl-terminated polysiloxane, 20-30 parts of amine curing agent, 5-15 parts of reinforcing filler and 0.5 According to the invention, the balance among self-repairing capability, mechanical property and heat resistance is successfully realized; in the microcrack propagation process, fracture and recombination mechanisms of dynamic covalent bonds effectively prevent further propagation of cracks.

The invention discloses a wear-resistant high-gloss nano liquid, a wear-resistant high-gloss ceramic tile and a preparation method of the wear-resistant high-gloss ceramic tile, and belongs to the technical field of ceramic manufacturing. The wear-resistant high-gloss nano liquid at least comprises a component A, a component B and a component C which are independently subpackaged, wherein the component A comprises large-particle silica sol, boric acid, sodium methyl silicate, carboxymethyl cellulose sodium, a boronizing stabilizer and the balance of water; the component B comprises a boronizing stabilizer and the balance of water-based modified silicone oil; and the component C is wax emulsion. Through systematic material and process innovation, the ceramic tile which is high in gloss, strong in antifouling property, durable in wear resistance and high in transportation performance is prepared, and the market requirements of surface treatment materials which are high in performance, low in cost and easy to transport are met.

The invention belongs to the technical field of electrode material preparation, and particularly relates to a preparation method of boric acid-assisted low-temperature sintered porous aluminum foil. The preparation method comprises the following steps: dispersing aluminum powder, boric acid and binder raw materials in a solvent to form dispersed slurry; and coating a matrix with the dispersed slurry, drying, sintering at 450-600 DEG C under protective gas, reacting boric acid with aluminum oxide on the surface of the aluminum powder to form low-melting-point aluminoborate, reducing the sintering temperature, promoting aluminum atom diffusion, increasing sintering neck formation, and sintering to obtain the porous aluminum foil. Boron oxide generated by decomposition of boric acid is added to react with aluminum oxide to form low-melting-point aluminoborate, the sintering liquidus temperature is reduced, aluminum atom diffusion is promoted, and low-temperature sintering at 450-600 DEG C is achieved. The aluminum powder sintered foil is suitable for energy storage devices such as an aluminum electrolytic capacitor and a lithium ion battery, has the advantages of low-temperature energy conservation, high porosity and strong mechanical property, and solves the problems of aluminum oxide obstruction and high high-temperature energy consumption of the traditional aluminum powder sintered foil.

The invention discloses a manganese-enriched albumin boron-containing nano preparation as well as a preparation method and application thereof, and belongs to the field of medicines and nano biological materials. According to the manganese-enriched albumin boron-containing nano preparation, albumin serves as a core carrier, phenylboronic acid derivatives are loaded through covalent or electrostatic interaction, then a manganese oxide layer is deposited on the surface in situ, and the prepared manganese-enriched albumin boron-containing nano preparation can remarkably increase the boron accumulation amount in tumor tissue; local and systemic immune response of tumors is promoted through the immune activation effect of manganese ions, so that the treatment effect of boron neutron capture therapy (BNCT) is remarkably improved. According to the invention, a phenylboronic acid derivative with tumor targeting is compounded with albumin, and manganese oxide is deposited in situ on the surface of the phenylboronic acid derivative, so that a multifunctional nano preparation with high boron delivery efficiency, immunological enhancement and magnetic resonance imaging functions is formed.

The invention discloses a covalent organic framework material based on a boric acid structure, a preparation method of the covalent organic framework material and application of the covalent organic framework material in dopamine detection, and relates to a covalent organic framework material and a preparation method and application of the covalent organic framework material. The technical problems that an existing dopamine recognition method is high in detection limit and harsh in recognition environment are solved. The periodic structure fragment of the covalent organic framework material based on the boric acid structure is shown in the specification. The 2-(4-boric acid phenyl)-5, 10-dinitro-1H-phenanthro [9, 10-d] imidazole diamine and 4, 4 ', 4', 4 ''-(pyrene-1, 3, 6, 8-tetrayl) tetrabenzaldehyde are subjected to a reaction to obtain the 2-(4-boric acid phenyl)-5, 10-dinitro-1H-phenanthro [9, 10-d] imidazole diamine derivative. The covalent organic framework material based on the boric acid structure is used for detecting dopamine, has relatively high selectivity and anti-interference capability, and is not interfered by amino acid in the environment. And the covalent organic framework material based on the boric acid structure can be embedded in the hydrogel, so that the hydrogel is convenient to carry. The method can be applied to detection of dopamine in environment and biological systems.

The invention relates to a preparation method of a lithium difluoro bis (oxalate) phosphate concentrated solution, and belongs to the technical field of lithium battery electrolyte additives. Adding lithium oxalate into a solvent, stirring and dissolving to obtain a lithium oxalate solution; the method comprises the following steps: adding a modified fluorine ion chelating agent into a lithium oxalate solution, stirring, filtering, putting into a reactor, and slowly introducing phosphorus pentafluoride gas; after the introduction is finished, heating and stirring for reaction; after the reaction is finished, filtering reaction liquid to remove unreacted solid impurities, so as to obtain a lithium difluoro bis (oxalate) phosphate concentrated solution; the modified fluorine ion chelating agent is prepared from D301 ion exchange resin, dichloroethane, propylene-1-base boronic acid pinacol ester, mercaptoethyl guanidine dihydro bromide and sodium tert-butoxide. The lithium difluoro bis (oxalate) phosphate prepared by the method is high in purity and high in yield, and meets the use requirements of lithium ion battery electrolyte on lithium salt.

The application relates to a dry powder drag reducer for fracturing fluid and a preparation method thereof, and belongs to the technical field of drag reducers; the dry powder drag reducer is copolymerized and modified by preparing a polymerizable modifier, aromatic rings and sulfonic acid ion structures are introduced into the dry powder drag reducer, the high-temperature resistance and salt resistance of the dry powder drag reducer are effectively improved, in addition, the modified dry powder drag reducer structure also has a catechol structure, can form a stable five-membered ring borate with a boron crosslinking agent, and the dry powder drag reducer can be mixed with a guar gum drag reducer when the boron drag reducer is used, so that the problem of poor sand carrying capacity of the dry powder drag reducer is effectively solved.

The invention relates to a preparation method of silicon dioxide-boron nitride nanobelt aerogel, which comprises the following steps: dissolving melamine and boric acid in a co-solvent of tert-butyl alcohol and hot deionized water, stirring and mixing, carrying out ultrasonic treatment, freeze-drying and the like to obtain a melamine-boric acid aerogel precursor, placing the precursor in a tubular furnace, and carrying out vacuum drying to obtain the silicon dioxide-boron nitride nanobelt aerogel. Pyrolyzing in an ammonia gas atmosphere to obtain boron nitride nanobelt aerogel; and placing the boron nitride nanobelt aerogel in a xylene solution containing tetraethoxysilane and silicon tetrachloride, taking out the boron nitride nanobelt aerogel, and drying the boron nitride nanobelt aerogel. And hydrolyzing and pyrolyzing in an inert atmosphere to form a silicon dioxide layer on the surface, thereby obtaining the silicon dioxide-boron nitride nanobelt aerogel. The silicon dioxide and boron nitride nanobelt aerogel is low in density and excellent in mechanical property and oxidation resistance.

Provided are an aqueous inorganic coating agent capable of forming a coating film having excellent adhesion to a substrate, and a coating method using this aqueous inorganic coating agent. The aqueous inorganic coating agent includes alkaline colloidal silica, at least one of a sodium phosphate compound and a potassium phosphate compound, boric acid, and an inorganic abrasive.

The invention relates to the technical field of heterogeneous electro-Fenton catalysis, in particular to a boron-nitrogen co-doped porous carbon self-breathing electrode and application of the boron-nitrogen co-doped porous carbon self-breathing electrode in construction of a self-breathing heterogeneous electro-Fenton system. According to the boron-nitrogen co-doped porous carbon self-breathing electrode, ZIF-8 is used as a precursor, a boron-nitrogen co-doped porous carbon material is prepared through boric acid doping, hydrothermal reaction and high-temperature calcination, then the boron-nitrogen co-doped porous carbon material, a binder, a dispersing agent and the like are prepared into slurry, and the slurry is coated on a hydrophobic breathable conductive carrier to prepare the boron-nitrogen co-doped porous carbon self-breathing electrode. The self-breathing electrode is used as a cathode and is used for constructing a self-breathing heterogeneous electro-Fenton system, oxygen can be efficiently taken in from air by utilizing a self-breathing effect under the condition of no external aeration, active oxygen species are generated in situ, and the self-breathing electrode is used for efficiently treating organic wastewater. The method has the advantages of efficient degradation, experimental condition simplification, energy conservation and consumption reduction.

The invention discloses a preparation method of a biomass hard carbon negative electrode material, which is characterized by comprising the following steps: carrying out primary carbonization on a biomass material, sequentially introducing a phosphorus element, a boron element and a copper element, carrying out secondary carbonization on a modified hard carbon raw material, and introducing carbonyl to obtain the hard carbon negative electrode material. Preliminary carbonized powder, boric acid and phosphoric acid are added into a reaction kettle together for a low-temperature graphitization reaction, phosphorus and boron are introduced for a hard carbon raw material, the phosphorus can widen the spacing of a graphite layer, the boron can catalyze rearrangement of a graphitized carbon layer, then the hard carbon raw material and organic copper salt are mixed and ground in cooperation, secondary carbonization is conducted, and the hard carbon material is obtained. By introducing the copper element, graphitization of the product can be promoted, and meanwhile, copper atoms can also improve the conductivity; and glyoxylic acid is added to introduce carbonyl into the product, and the carbonyl can preferentially catalyze decomposition of the inorganic salt, so that decomposition of an organic solvent is inhibited, and then a uniformly distributed inorganic salt-rich SEI film is formed.

The invention relates to the technical field of coatings, and discloses a modified epoxy heat-resistant flame-retardant coating and a preparation method thereof.The preparation method comprises the steps that flame-retardant modified halloysite nanotubes, deionized water, epoxy resin, boron phenolic resin, a defoaming agent and a flatting agent are mixed to be uniform and discharged, and the modified epoxy heat-resistant flame-retardant coating is obtained. Diethyl hypophosphorous acid ethylene oxide methyl ester and boric acid modified halloysite nanotubes react to obtain flame-retardant modified halloysite nanotubes, and the halloysite nanotubes and the organic flame retardant diethyl hypophosphorous acid ethylene oxide methyl ester have a synergistic effect, so that agglomeration of the halloysite nanotubes is avoided, migration of a small-molecule organic flame retardant is avoided, and the flame retardance of the halloysite nanotubes is improved. The boron phenolic resin, the flame-retardant modified halloysite nanotubes and the epoxy resin form a three-dimensional cross-linked thermosetting network structure, so that the hardness, wear resistance and impact resistance of the coating can be improved, and the obtained coating has excellent flame retardance and heat resistance.

The invention relates to the technical field of modified carbon graphite materials, and particularly discloses an antioxidant modified carbon graphite material and a preparation method thereof, the antioxidant modified carbon graphite material comprises the following raw materials by weight: 30-34 parts of medium temperature pitch, 4-6 parts of modified silica sol and 10-12 parts of artificial graphite powder; from two aspects, firstly, the aluminum dihydrogen phosphate and the boric acid aqueous solution are added, the aluminum dihydrogen phosphate can promote the asphalt to form a denser and firmer glassy carbon structure during carbonization, and phosphorus pentoxide generated by decomposition of the aluminum dihydrogen phosphate and boron oxide generated by dehydration of boric acid can generate a glass phase with an anti-oxidation effect; secondly, core-shell particles are added, a shell layer of the core-shell structure is an aluminum hydroxide structure generated by hydrolyzing aluminum nitrate nonahydrate, and an inner core is epoxidized nano silicon carbide; through the synergistic effect of the two, the mechanical property and the oxidation resistance of the carbon-graphite material are improved.

The invention provides an electrolyte and a lithium iron manganese phosphate battery, and relates to the technical field of lithium batteries. The electrolyte comprises a lithium salt, an organic solvent and an additive, the additive is a phenylboronic acid pinacol ester compound, and the phenylboronic acid pinacol ester compound has a structure as shown in a formula I. The electrolyte provided by the invention is helpful for improving the cycling stability of the lithium manganese iron phosphate battery under a high-temperature condition.

The invention relates to the technical field of graphene modification, and particularly discloses a preparation method of zinc borate modified graphene, which comprises the following steps: ultrasonically dispersing graphene in water to obtain 0.5-1g / L graphene dispersion liquid; adding a dispersing agent, a 0.08-0.12 mol / L borax aqueous solution and ethanol into the graphene dispersion liquid, uniformly mixing, and then dropwise adding a 0.08-0.12 mol / L zinc sulfate aqueous solution under the stirring action; then carrying out a reaction through microwave heating at the temperature of 50-70 DEG C under the power of 100-300 W for 20-30 min; after the reaction is finished, filtering, washing and drying to obtain zinc borate modified graphene. According to the preparation method of the zinc borate modified graphene, provided by the invention, a uniform, complete and compact shell layer can be formed on the surface of the graphene through in-situ self-assembly, so that the surface of the graphene is textured, and the dispersion uniformity and dispersion stability of the graphene in an oil phase system are improved.

The invention provides a preparation method of a stable-size and high-strength laminated timber, which comprises the following steps of: mixing boric acid and choline chloride, and heating and melting at 90 DEG C to form a uniform, stable and transparent liquid, so as to obtain a deep eutectic solvent DES; the preparation method comprises the following steps: under the vacuum degree of-0.1 MPa, dipping wood veneers in DES, performing high-temperature steam sterilization treatment under the condition of 121 DEG C, assembling the veneers subjected to multi-layer treatment according to a rift-grain mode, and performing hot pressing at 160 DEG C to obtain the laminated timber with stable size and high strength. The prepared laminated timber has dimensional stability and good mechanical properties, has structural applicability of direct contact with a moisture environment, and has the advantages of mildew resistance, corrosion resistance, flame retardance and the like.

Provided herein is an electrolyte composition for a lithium-ion battery, the composition comprising: (a) 18-35 wt% of lithium salt; (b) 1-25 wt% of solvent additive; and (c) 45-80 wt% of solvent. The total amount of (a), (b) and (c) is less than or equal to 100 wt% of the electrolyte composition. The lithium salt comprises lithium bis(fluorosulfonyl)imide (LiFSI), lithium 4,5-dicyano-2-(trifluoromethyl)imidazole (LiTDI) and lithium difluoro(oxalato)borate (LiDFOB). The solvent additive comprises one or more fluorinated and / or unsaturated carbonate compounds. The solvent comprises a cyclic carbonate. Also provided is an electrochemical cell comprising the electrolyte composition, an electrochemical energy storage device comprising the electrochemical cell, and uses associated with the electrolyte composition.

The invention relates to the technical field of medical materials, and discloses degradable medical gauze based on plant fibers and a production process of the degradable medical gauze. 0.5 to 2.0 parts of tannic acid; 0.1 to 1.0 part of boric acid; and 100 parts of a 1-allyl-3-methylimidazole chloride salt. The production process comprises the following steps: dissolving the raw materials in an ionic liquid to form a homogeneous solution, coating to form a film, then carrying out solidification regeneration treatment in an alcohol-water solution, controlling the residual quantity of the ionic liquid in a final product, and finally drying. In the solidification step, part of ionic liquid residues are controlled to serve as an internal plasticizer, meanwhile, an antibacterial component tannic acid is embedded in a cellulose matrix, long-acting and stable functions are achieved, the problems that a traditional regenerated cellulose material is rigid, and functional components are prone to falling off are solved, and the service life of the regenerated cellulose material is prolonged. The obtained gauze has biodegradability, flexibility and long-acting antibacterial property at the same time.

The invention relates to the technical field of high polymer materials, in particular to a corrosion-resistant cable sheath material and a preparation method thereof. The sheath material is prepared by taking an ethylene-octylene copolymer as a matrix and compounding functional fillers such as an aminated magnesium ion exchange A type molecular sieve, dopamine shell silicon dioxide nanoparticles and phenylboronic acid / octadecyl double-grafted silicon dioxide nanoparticles. Wherein the aminated Mg-A molecular sieve is used for efficiently capturing and fixing chloride ions through an ion-dipole effect and a hydrogen bond network; the dopamine shell layer silicon dioxide enhances the interface bonding strength through dual active groups of catechol and amido; phenylboronic acid / octadecyl double-grafted silicon dioxide constructs a dynamic boric acid ester cross-linked network and a hydrophobic barrier, and synergistic protection of crack self-healing and moisture barrier is achieved. The sheath material remarkably improves the long-term corrosion resistance and mechanical stability of the cable in a severe environment.

The invention relates to the technical field of building materials, and provides a sound-insulation fireproof building material and a preparation method thereof. The sound-insulation and fireproof building material is prepared from, by weight, 100 parts of flame-retardant wood fiber, 15-30 parts of adhesive, 5-6 parts of hollow glass beads and 1-3 parts of waterproof agent, a preparation method of the flame-retardant wood fiber comprises the following steps that a flame retardant is dispersed in a solvent, wood fiber is added, mixing and drying are conducted, and the flame-retardant wood fiber is obtained; and the flame retardant comprises a 2, 4-dihydroxy-5-pyrimidine boric acid and / or a phenyl phosphate compound. By means of the technical scheme, the problem that in the prior art, sound-proof and fireproof building materials are poor in flame retardant property is solved.

The application discloses a degradable high-oxygen-barrier composite film and a preparation method and application thereof. The composite film is composed of polylactic acid and hybrid graphene oxide, wherein the hybrid graphene oxide is connected in a 'face-to-edge' mode by boric acidized graphene oxide and hydroxylated graphene oxide, and the mass percentage of the hybrid graphene oxide in the composite film is 0.25-1 wt%. The prepared composite film has the advantages of degradability and excellent oxygen barrier property, and has a good application background in the packaging field.

The invention relates to the technical field of building glazed tiles, in particular to an antibacterial glazed tile and a preparation method thereof.The antibacterial glazed tile comprises a green body layer and an antibacterial glaze layer which are sequentially arranged from bottom to top; wherein the antibacterial glaze layer is obtained by calcining antibacterial glaze; the antibacterial glaze is prepared from the following raw materials: high-temperature antibacterial frit, calcined kaolin, corundum, quartz, dolomite, calcined talc, strontium carbonate, wollastonite, potassium feldspar and albite; the high-temperature antibacterial frit is prepared from the following raw materials: zirconium silicate, a silver antibacterial agent, calcined aluminum oxide, calcined talc, quartz, wollastonite, kaolin, calcium phosphate, potassium feldspar, albite, boric acid and lithium carbonate. According to the antibacterial glazed tile and the preparation method thereof provided by the invention, the formula of the antibacterial glaze is optimized, so that the antistatic property and the corrosion resistance can be improved on the premise of ensuring the antibacterial property of the antibacterial glazed tile.

The present invention relates to a process for preparing B-[(7α,17β)-17-hydroxy-7-[9-[(4,4,5,5,5-pentafluoropentyl)sulfinyl]nonyl]estra-1,3,5(10)-trien-3-yl]-boronic acid, also known as Fulvestrant-3-boronic acid or ZB716, whose structure is reported below.

The invention discloses a flame-retardant low-VOCs aqueous adhesive and a preparation method thereof. The preparation method comprises the following steps: S1, preparing a pre-emulsion; S2, synthesizing a resin emulsion; S3, preparing a flame-retardant dispersion; the phosphate flame-retardant monomer participates in the copolymerization reaction of acrylate, and cooperates with hyperbranched ammonium polyphosphate and zinc borate to form a condensed phase and gas phase dual flame-retardant barrier; hydroxyl-containing phosphate is embedded into a solvent-free polyurethane curing agent system, so that aliphatic diisocyanate synchronously completes crosslinking, flame retardance and thickening under the action of an organic tin catalyst, and VOCs introduced by a traditional thickening agent are eliminated from the source; the final value of the NCO content is accurately controlled through a synchronous dropwise adding process and dynamic monitoring of the NCO content, so that the viscosity is stable, and sedimentation and layering are avoided; the long-standing contradiction of high flame retardance, namely high VOCs, and strong adhesion, namely weak constructability, in the field of waterborne adhesives is solved.

The invention belongs to the technical field of polymer insulating materials, and particularly provides a low-temperature-resistant electrical insulating material and a preparation method thereof. The low-temperature-resistant electrical insulating material is prepared from the following raw materials: epoxy resin, a boric acid functional compound, polydimethylsiloxane and carbon fiber cloth, the boric acid functional compound is prepared by reacting modified hyperbranched polyamide-amine, modified nano aluminum oxide and 3-aminophenylboronic acid, and the modified nano aluminum oxide is prepared by modifying nano aluminum oxide with a silane coupling agent. The low-temperature-resistant electrical insulating material prepared by the invention has the advantages of low temperature resistance, self-repairing and excellent mechanical properties.