131 results about "Metaboric acid" patented technology

The present disclosure relates to surface covering building materials for roofs, sidewalls and other exterior surfaces exposed to the weather such as, but not limited to, asphaltic and non-asphaltic roofing materials, wherein said surface covering building materials exhibit long-term resistance to microbial growth-induced staining. The surface covering building materials include a component having antimicrobial potential which consists essentially of (a) a copper component or a tin component and (b) a barium metaborate monohydrate component.

Calcium hypochlorite compositions that are classified as a Packing Group III Division 5.1 oxidizer material or as a non-Division 5.1 oxidizer material are described. In one embodiment, the compositions comprise an admixture of particulate calcium hypochlorite and particulate metaboric acid. The calcium hypochlorite is present in the composition in an amount and is of a concentration such that the composition would be classified as a Packing Group II Division 5.1 oxidizer in the absence of said particulate metaboric acid. Other embodiments described are solid shaped articles, e.g., tablets, comprising the described calcium hypochlorite-metaboric acid composition.

The invention discloses a process for preparing lithium bis (oxalato) borate. The process comprises the following steps: 1, uniformly mixing lithium hydroxide or lithium carbonate with oxalic acid oroxalic acid dehydrate; 2, adding ortho-boric acid or metaboric acid into the uniformly reacted raw materials in the step 1, and uniformly mixing; 3, performing dry pressing on the raw materials obtained in the step 2 under pressure to form tablets, and placing the pressed tablets in a drying box; 4, continuously adding phosphorus pentoxide into the drying box, and continuously performing drying toobtain a semi-finished product of lithium bis (oxalato) borate; 5, dissolving the semi-finished product obtained in the step 4 with anhydrous acetonitrile, filtering out insoluble substances, evaporating and concentrating until a white solid appears, recovering acetonitrile, and drying the obtained white solid in a drying oven to obtain a high-purity lithium bis (oxalato) borate product. Comparedwith the prior art, the process for preparing lithium bis (oxalato) borate has the advantages of simple operation, economy, environmental protection, low by-product content in the reaction and high reaction efficiency.

The invention discloses a medical antibacterial EVA foam plastic and a preparation method thereof. The EVA foam plastic is prepared through the following steps: weighing the following components: EVA, PVA, nanometer activated zinc oxide, aluminum powder, POE, organic siloxane, an antioxidant, methyl phenyl silicone oil, EAA, barium metaborate, a surface treating agent, PA6, LLDPE, PA66 and talcum powder in parts by weight, uniformly mixing the weighed components, and extruding and pelleting the uniformly-mixed components so as to obtain the EVA foam plastic. The EVA foam plastic has the advantages that the relative density is reduced by 14-18%, the breaking elongation rate is increased by 50-90%, the antibacterial rate for escherichia coli is 99.5-99.9%, the antibacterial rate for golden staphylococcus is 99.5-99.9%, the tear strength is improved by 30-40%, the tensile strength is 22-28 MPa, the falling ball impact strength is 47-53 MPa / mm, and the vicat softening point is 80-100 DEG C.

The invention discloses a wear-resistant and high-toughness material for 3D printing ceramic, belongs to the field of ceramic materials, and solves the problem of poor wear resistance and toughness ofcommon ceramic materials at present. The ball milling efficiency can be improved by adding kerosene and absolute ethyl alcohol as ball milling media, and combustion of the kerosene can promote unoxidized metal components in a ball milling material to have a redox reaction. Aluminum oxide contained in fly ash and an Mg<2+> component in palygorskite can produce a magnesia-alumina spinel component with erosion resistance and abrasion resistance at high temperature. A boron oxide component contained in boric sludge added to aids is acid anhydride of boric acid, the acid anhydride can produce boric acid and metaboric acid with water and emit a lot of heat, a boehmite component is embedded in a hard roasted product to improve dispersity and binding force among structures, external friction canbe well scattered, quick wear can be avoided, adsorption can be formed in combination with acrylic resin, the structure compactness of a material system can be improved, and tensile strength and wearresistance can be improved.

The invention discloses a heat insulation anti-sticking coating for mechanical cast steel machining and a preparation method of the heat insulation anti-sticking coating. The preparation method comprises the steps of weighing magnesia powder, meta-barium borate, water glass, N-methyl-2-pyrrolidinone, activated bentonite, dimethyl formamide, magnesium chloride, xylene, barium chloride, polytetrafluoroethylene, polyimide, ethyl acetate, aluminum paste and paint, feeding magnesia powder, activated bentonite and barium chloride into an edge runner, performing dry mixing, and adding water glass for mixed grinding; feeding polyimide, polytetrafluoroethylene, xylene, ethyl acetate and dimethyl formamide into a reaction kettle for uniform mixing to obtain a mixture, mixing the mixture with the mixed-ground raw materials, adding the rest of the raw materials, grinding the raw materials in a three-roller machine, and adjusting the viscosity. The relative density of a product is 16-18, and the product can be solidified at low temperature; the product can resist high temperature of 1,000-1,200 DEG C, cannot be separated, does not corrode metal equipment, protects steel materials from being oxidized, avoids decarbonization and can be widely produced to continuously replace the conventional material.

A preparation method of a high-voltage solid polymer electrolyte, comprising: (1) dissolving a polymer matrix, a lithium salt, and an inorganic additive in anhydrous acetonitrile in a certain proportion, and stirring at room temperature to obtain a uniform solution; the polymer matrix It is polyethylene oxide, the lithium salt is lithium bistrifluoromethanesulfonimide or lithium perchlorate, and the inorganic additive is nanowire or nanoparticle, selected from zinc borate, aluminum borate, sodium tetraborate , barium metaborate or calcium borate; The mass ratio of the polyoxyethylene and lithium salt is EO:Li + =10-20:1, the mass consumption of described inorganic additive is no more than 20% of polymer matrix and lithium salt total mass; (2) the homogeneous solution of step (1) gained is poured in the polytetrafluoroethylene mould, evaporates Let it dry completely to obtain a solid polymer electrolyte. The preparation method of the invention improves the high-voltage resistance performance of the solid polymer electrolyte, enables it to match the high-voltage ternary positive electrode material, and improves the energy density and safety of the all-solid-state battery.

A hydrogen storage medium is provided, where the medium is comprised of boron oxide and closely related compounds such as orthoboric acid, metaboric acid, hydrated boric acid, and disodium borohydrate. The medium is substantially an amorphous glassy network, albeit with local regions of order, pores, and networks that provide surface area. Hydrogen is adsorbed by the medium with a heat of adsorption of about 9 kJ / mol to about 13 kJ / mol, a value which is higher than that of the heat of adsorption of hydrogen on carbon. The value for the heat of adsorption of hydrogen on the inventive storage medium is provided by computation, and corroborated by experimental observation. The higher heat of adsorption of the medium provides for operation at temperatures higher temperatures higher than those provided by carbon. Further provided are methods by which the storage medium can be prepared in such a form so as to permit high capacity hydrogen storage, as well as an apparatus, with the inventive medium disposed therein, for storing hydrogen.

The invention discloses a method for synthesis of a high-concentration anhydrous peracetic acid solution and co-production of acetylurea. According to the method, peracetic acid and acetylurea are generated via a reaction between percarbamide and acetic anhydride under the action of a catalyst; and then the high-concentration anhydrous peracetic acid solution is separated out via vacuum distillation, the residual distillate is frozen, and the frozen residual distillate is recrystallized for preparation of acetylurea, wherein the catalyst is selected from boric acid, metaboric acid, sodium borate, sodium metaborate, sodium perborate or a corresponding hydrate. As the raw materials, percarbamide and acetic anhydride are cheap and easy to obtain; compared with a method for preparing the anhydrous peracetic acid solution via acetaldehyde oxidation, the method provided by the invention is simpler, less in equipment investment and safer; and by adoption of the method provided by the invention, both the anhydrous peracetic acid solution and acetylurea are prepared, so that the application range is broad and the added value is high.

The invention discloses oil-resistant mildew-resistant modified bituminous paint. The oil-resistant mildew-resistant modified bituminous paint is prepared from 16-21 parts by weight of modified asphalt, 12-14 parts by weight of urea-formaldehyde resin, 0.5-1.0 part by weight of oxalic acid, 0.5-1.0 part by weight of aluminum phosphate, 6-8 parts by weight of modified waste sodium silicate sand, 19-22 parts by weight of terpolycyantoamino-formaldehyde resin, 4-6 parts by weight of methylene bis(cyclohexylammonium), 2-3 parts by weight of disodium sebacate, 2-4 parts by weight of cuprous thiocyanate, 1-3 parts by weight of liquid nitrile rubber, 3-4 parts by weight of nanometer diatomite, 1-2 parts by weight of nanometer calcium carbonate, 1-2 parts by weight of a silane coupling agent KH-560, 0.5-1.0 part by weight of a JWK 200 antistatic agent, 2-3 parts by weight of barium metaborate, 1-2 parts by weight of di-n-octyltin-dithioglycolate, 4-6 parts by weight of coal tar, 7-9 parts by weight of acetone and 10-13 parts by weight of xylene. The oil-resistant mildew-resistant modified bituminous paint utilizes modified asphalt as a main body. The used urea-formaldehyde resin improves paint wear resistance, oil resistance, mildew resistance and insulating properties. The used modified waste sodium silicate sand improves poor asphalt resistance to heat and improves paint resistance to heat, acids and fire. The used cuprous thiocyanate can prevent aquatic organism adhesion and reduce fuel consumption of maritime ships.