8 results about "Triethyl borate" patented technology

This invention discloses a process for preparing ultrafine glass powder using a spray pyrolysis method in the field of glass encapsulation materials. The process first prepares a homogeneous solution A using boric acid, aluminum nitrate nonahydrate, alkaline earth metal nitrates, lithium acetate, sodium acetate, and potassium acetate. Tetraethyl orthosilicate is dissolved in anhydrous ethanol to obtain solution B. A rare earth transition metal composite oxide nanoclusters encapsulated with a silica shell hybrid inorganic modifier is dispersed in anhydrous ethanol to obtain suspension C. Solution B and suspension C are mixed, and deionized water and hydrochloric acid are added to adjust the pH. After pre-hydrolysis and cooling, triethyl borate is added dropwise for co-condensation, and then mixed with solution A. After adjusting the pH and aging, the mixture is ultrasonically atomized and spray pyrolyzed to obtain ultrafine glass powder. The glass powder obtained by this invention has small particle size, high sphericity, and can be continuously produced.

The present application uses the mixture of residual liquid and cracking product (LPS) after the cracking of polydimethylsilane (PDMS) as raw material, and the polymerization reaction with tributyl borate or triethyl borate obtains viscous liquid (LPCS), which introduces the heterogeneous element boron; the viscous liquid (LPCS) further reacts with zirconium acetylacetonate to introduce the heterogeneous element zirconium, and the polycarbosilane ceramic precursor (PBZCS) doped with boron and zirconium elements is obtained; the precursor silk obtained after the melt spinning can be inosculated by the relatively simple air oxidation crosslinking method, and the boron and zirconium elements act as sintering agents to densify the fiber in high-temperature sintering, and the high-temperature-resistant ceramic fiber is obtained.

The application relates to the technical field of silicone rubber, in particular to a preparation method of a core-shell structure modified ceramic powder and a ceramized silicone rubber, which comprises the following steps: dispersing pretreated inorganic material powder in an ethylene glycol aqueous solution at a high speed, adding triethyl borate and a catalyst drop by drop under high-speed stirring, reacting, and ensuring that a shell layer is uniformly grown to a required thickness; a reaction formula is as follows: after the reaction is completed, standing and aging are carried out to stabilize the shell layer structure, the coated powder is separated out, impurities are removed through low-temperature drying, physically adsorbed water and solvents are removed, and finally, heat treatment is carried out to convert the amorphous gel shell layer into a crystalline or dense oxide shell layer and remove organic residues; a reaction formula is as follows: the inorganic material powder is weakly acid or weakly alkaline and is insoluble in water.

This application belongs to the field of lithium battery technology, and particularly relates to composite modified electrolyte sheets and their preparation methods, and lithium batteries. The method includes: adding succinate and polyvinyl alcohol to a solvent mixture, adding potassium trifluoromethanesulfonylimide and a first lithium salt in multiple batches to obtain a precursor solution; curing and drying the precursor solution in a preset mold to obtain a precursor substrate; dissolving lithium borate in a solvent mixture and adjusting the viscosity to obtain a first slurry; spin-coating the first slurry onto both sides of the precursor substrate to obtain a first electrolyte substrate; adding triethyl borate to anhydrous ethanol, adding a second lithium salt and boric acid to obtain a second slurry; spin-coating the second slurry onto both sides of the first electrolyte substrate to obtain a second electrolyte substrate; obtaining a framework suspension based on a first COF monomer, a second COF monomer, polyethylene glycol, and potassium carbonate; spin-coating the framework suspension onto both sides of the second electrolyte substrate to obtain a composite modified electrolyte sheet; reducing interfacial impedance and improving electrochemical performance.

The application relates to the technical field of refractory materials, in particular to a magnesium-carbon refractory material containing metal-carbon complex phases and a preparation method thereof, which comprises fused magnesia particles, silicon-carbon complex phase particles, modified flake graphite, aluminum powder, elemental silicon powder, nano carbon black and boron carbide. The SiC-Si-C complex phase particles are used for slag resistance and residual Si oxidation self-repairing. The graphite is modified by triethyl phosphate and triethyl borate to form a BPO4 coating, which realizes physical blocking at medium and low temperatures and liquid phase sealing at high temperatures, and the graphite is not damaged by the mild modification. The two components build a multi-scale strengthening system, and effectively inhibit carbon oxidation and slag corrosion.

This invention discloses a new energy antifreeze and its preparation method, relating to the field of antifreeze technology. The invention comprises the following raw materials in parts by weight: 350-390 parts high-purity water, 500-580 parts ethylene glycol, 25-30 parts corrosion inhibitor, 30-40 parts composite corrosion inhibitor, 50-70 parts corrosion inhibitor solution, 1-2 parts polyethylene oxide, 2-3 parts triethyl borate, 1.3-4 parts triethanolamine, 0.4-1 parts antifoaming agent solution, and 0.1-0.3 parts dye solution. The corrosion inhibitor is prepared by hydrolyzing and protonating polysuccinimide, then grafting it with 2-undecylbenzimidazole-N-ethanol, and finally grafting it with hydroxyethylidene diphosphonic acid. The introduction of the corrosion inhibitor and composite corrosion inhibitor in this invention effectively improves the insulation stability and corrosion resistance of the antifreeze for new energy vehicles. Therefore, this invention has a wider range of application prospects.

This application belongs to the field of cable material technology and proposes a method for preparing environmentally friendly, low-smoke, halogen-free polyethylene cable material. High-density polyethylene is melt-grafted with vinyltrimethoxysilane and triethyl borate to form a cross-linked network containing Si-O-B bonds. During combustion, this network pyrolyzes to generate B2O3 and SiO2 nanoparticles. The former melts to form a liquid layer that adsorbs free radicals to inhibit the combustion chain reaction, while the latter forms a eutectic glass phase with B2O3. Combined with ZnO nanoparticles released from the decomposition of a borosilicate-metal chelating agent as a flux, a dense glass-ceramic layer is formed in the carbon layer to isolate oxygen and heat. Simultaneously, ethylene-vinyl acetate copolymer, as a vinyl elastomer, not only improves flexibility through its toughening phase, but its vinyl groups also interact with the Si-O-B bonds of the borosilicate-grafted polyethylene, achieving a comprehensive improvement in flame retardancy, smoke suppression, and mechanical properties.

The application relates to the technical field of photoelectric conversion materials, in particular to a perovskite precursor material for photoelectric conversion and a preparation method thereof. The preparation raw material of the precursor material comprises the following components: lead iodide, stannous iodide, methyl amine iodide and modified hyperbranched polymer; the preparation raw material of the modified hyperbranched polymer comprises the following components in parts by weight: triethyl borate 2-3 parts, 1,3-propanediol 2-3 parts, 2-amino-6-chlorobenzimidazole 0.5-0.8 parts, acryloyl chloride 0.3-0.5 parts, acrylic acid 0.3-0.4 parts, trifluoroethyl methacrylate 1-1.5 parts and dopamine 0.4-0.6 parts; the prepared perovskite precursor can improve photoelectric conversion efficiency and stability.