10 results about "Ammonium pentaborate" patented technology

Intumescent composition comprising an acid donor (A), a carbon donor (B), a binder polymer (C) and a blowing agent (D). The acid donor (A) is selected from the group consisting of ammonium polyphosphate, ammonium dihydrogen phosphate, ethylenediamine phosphate, ammonium pentaborate, guanylurea phosphate, diguanidine phosphate and mixtures thereof. The carbon donor (B) is selected from the group consisting of glucose, arabinose and other monosaccharides, lactose, maltose and other disaccharides, starch, cellulose, dextrin and other polysaccharides, sorbitol, erythritol, pentaerythritol, dipentaerythritol, mannitol and other polyhydric alcohols and mixtures thereof. The blowing agent is provided in the form of microsphere particles comprising a thermoplastic polymer shell encapsulating a propellant, which microsphere particles are expandable microspheres.

The invention discloses a method for preparing a porous carbon material by taking waste plastic as a carbon source in an air atmosphere and application. The method comprises the following steps: uniformly mixing ammonium pentaborate tetrahydrate and a carbon source to obtain a pyrolysis precursor; covering ammonium pentaborate tetrahydrate above the pyrolysis precursor, and vibrating to enable the pyrolysis precursor to be more compact; transferring the pyrolysis precursor covered with ammonium pentaborate tetrahydrate into a tubular furnace, carbonizing in an air atmosphere, and naturally cooling to room temperature to obtain a pyrolysis product; adding water into the pyrolysis product, stirring, washing with water, filtering to respectively obtain filtrate and filter residues, and drying the filter residues to obtain the B / N co-doped porous carbon material. Compared with a traditional method, inert atmosphere protection is not needed, the cost and resource consumption are remarkably reduced, and the method has universality, environment friendliness, economical efficiency and high efficiency. The preparation process is simple, the period is short, the yield is high, the method is suitable for industrial large-scale production, and a new way is provided for precisely synthesizing the functional porous carbon material through air pyrolysis under mild conditions and expanding the application field of the functional porous carbon material.

The application provides a preparation method of an electrode foil, comprising the following steps: providing an unformed foil, wherein the unformed foil comprises an aluminum foil substrate and an aluminum powder sintering layer which is combined on at least one surface of the aluminum foil substrate; sequentially performing primary formation, secondary formation, tertiary formation, quaternary formation and quinary formation on the unformed foil; wherein the formation solution of the primary formation, the secondary formation and the tertiary formation is an aqueous solution containing boric acid, citric acid and citrate or azelaic acid and azelaic acid salt, adipic acid and adipic acid salt; and the formation solution of the quaternary formation and the quinary formation is an aqueous solution containing boric acid and ammonium carbonate or ammonium pentaborate. The electrode foil prepared by the preparation method has a high specific capacity.

The invention discloses a hydration heat inhibitor for concrete and a preparation method thereof, and belongs to the technical field of concrete admixtures. The hydration heat inhibitor for concrete is prepared from the following raw materials in parts by weight: 15 to 20 parts of modified nano cellulose, 3 to 5 parts of fluorine-containing surfactant, 8 to 12 parts of sodium gluconate, 0.5 to 1 part of ammonium pentaborate, 0.3 to 1 part of 1-hydroxyethylidene-1, 1-diphosphonic acid and 10 to 15 parts of temperature control material. According to the hydration heat inhibitor disclosed by the invention, the modified nano cellulose, the fluorine-containing surfactant and the temperature control material disodium hydrogen phosphate dodecahydrate in the hydration heat inhibitor are not simply superposed, but form a multi-level and multi-mechanism synergistic system; the fluorine-containing surfactant firstly delays the start of the reaction, after the reaction is started, the modified nanocellulose goes deep into the reaction to reduce the reaction rate, and the temperature control material absorbs and stores heat through phase change and forcefully presses the temperature rise. The hydration heat inhibitor provided by the invention can reduce the hydration heat release rate and significantly reduce the heat release under the condition of not influencing the working performance of concrete.

The application provides an outdoor intumescent steel structure fireproof coating and a preparation method thereof, and relates to the field of fireproof coatings.The fireproof coating comprises a matrix and a curing agent, and the matrix raw materials are bisphenol A type epoxy resin, low-viscosity aromatic epoxy resin, aerogel, ammonium polyphosphate, ammonium pentaborate, pretreated expanded graphite, composite filler, polyamide wax, dispersant and reactive diluent; and the curing agent raw materials are polyamide resin, low-viscosity aromatic epoxy resin, reactive diluent, melamine, carbon black powder, glass fiber, hydrogenated castor oil and attapulgite.The fireproof coating can form a uniform and stable coating layer, has strong adhesion to the steel structure, is resistant to high temperature and humid heat, effectively avoids problems such as peeling, bulging and cracking during use, and has excellent freeze-thaw resistance, acid resistance, alkali resistance, salt mist resistance and ultraviolet radiation resistance, so that the fireproof performance of the coating does not attenuate during long-term outdoor use, and the service life of the coating is effectively prolonged.

This invention discloses a mildew- and corrosion-resistant particleboard and its preparation method. The mildew- and corrosion-resistant particleboard prepared by this invention has high mechanical strength and good anti-corrosion and mildew-resistant effects. It is made from the following raw material components in parts by weight: 800-1200 parts of particleboard and 50-200 parts of composite adhesive. The composite adhesive is made from the following components in parts by weight: 35-160 parts of soybean glue, 5-20 parts of curing agent, 5-10 parts of mildew inhibitor, and 5-10 parts of corrosion inhibitor. The combined use of polyamide polyamine epichlorohydrin and dimethyloldihydroxyethylene urea in the adhesive components improves the static bending strength of the particleboard; the combined use of n-butylbenzisothiazolinone and dimethoxymethylsilylpropyloctadecyldimethylammonium chloride improves the mildew resistance of the particleboard; and the combined use of modified chitosan copper complex and ammonium pentaborate improves the corrosion resistance of the material, with synergistic effects.

The invention belongs to the field of electrochemical energy storage, and discloses a lithium-sulfur battery positive electrode material and a preparation method and application thereof.The lithium-sulfur battery positive electrode material is prepared from graphene oxide, aniline, boric acid, ammonium pentaborate, urea, diammonium hydrogen phosphate and sodium chloride through a simple heat treatment method. The method is simple and low in cost, the prepared high-performance three-dimensional porous phosphorus-doped boron nitride / multi-doped graphene composite material is used as a sulfur carrier, the conductivity of an active substance sulfur can be effectively improved, the huge volume expansion effect of the active substance sulfur in the charging and discharging process can be relieved, and the purpose of improving the electrochemical performance of a lithium-sulfur battery can be achieved.

The application discloses a kind of electrolyte for sintered foil capacitor and preparation process thereof, comprising the following components by mass percentage: mixed solvent 65-75%, main solute 4.0-6.0%, corrosion regulator 1.3-2.8%, repair stabilizer 0.15-0.6%, wetting accelerator 0.1-0.3%; the rest is pH regulator, adjust electrolyte pH to 7.2-7.8; mixed solvent consists of gamma-butyrolactone and ethylene glycol; main solute is branched dodecanedioic acid ammonium; corrosion regulator consists of boric acid and ammonium pentaborate; repair stabilizer consists of phosphoric acid and sodium hypophosphite; wetting accelerator is polyoxyethylene sorbitan monooleate; pH regulator is 25% ammonia water; gamma-butyrolactone and ethylene glycol mixed solvent are used, and the ratio is optimized, with good solubility and low viscosity, can fully infiltrate the porous structure of sintered foil, ensure effective contact area.

The invention provides a preparation method of a high-dielectric-constant oxidation film, which comprises the following steps: heating a corrosion aluminum foil in high-temperature pure water to obtain a heated corrosion aluminum foil; the heated corroded aluminum foil is placed in an organic acid solution for pretreatment, and a pretreated foil material is obtained; the pretreated foil is placed in a first acid treatment solution to be subjected to first-stage formation, and the foil subjected to first-stage formation is obtained; the foil obtained after second-stage formation is placed in a third solution for third-stage formation, the foil obtained after third-stage formation is obtained, and the third solution comprises ammonium pentaborate and boric acid; the foil obtained after third-level formation is placed in a fourth solution to be subjected to fourth-level formation, the foil obtained after fourth-level formation is obtained, and the fourth solution comprises ammonium pentaborate and boric acid or azelaic acid; and carrying out post-treatment and drying on the foil subjected to the four-stage formation to obtain the high-dielectric-constant oxide film.

The invention provides a preparation method of a high-dielectric-constant oxidation film, which comprises the following steps: heating a corrosion aluminum foil in high-temperature pure water to obtain a heated corrosion aluminum foil; the heated corroded aluminum foil is placed in an organic acid solution for pretreatment, and a pretreated foil material is obtained; the pretreated foil is placed in a first acid treatment solution to be subjected to first-stage formation, and the foil subjected to first-stage formation is obtained; the foil obtained after second-stage formation is placed in a third solution for third-stage formation, the foil obtained after third-stage formation is obtained, and the third solution comprises ammonium pentaborate and boric acid; the foil obtained after third-level formation is placed in a fourth solution to be subjected to fourth-level formation, the foil obtained after fourth-level formation is obtained, and the fourth solution comprises ammonium pentaborate and boric acid or azelaic acid; and carrying out post-treatment and drying on the foil subjected to the four-stage formation to obtain the high-dielectric-constant oxide film.