33results about How to "Inhibition of catalytic decomposition" patented technology

The invention belongs to the field of chemical preparation technology, and relates to a stabilizing agent for sodium hypochlorite and a usage method thereof. The stabilizing agent for sodium hypochlorite comprises the following components: 5-15wt% of sodium sulfamate, 0.6-1.5wt% of sodium silicate, 1-3wt% of sodium bicarbonate, and the balance being deionized water; the usage method of the stabilizing agent for sodium hypochlorite comprises the following steps: the stabilizing agent for sodium hypochlorite and a 10wt% sodium hypochlorite solution are mixed according to a mass ratio 1:1, after stirring, filtering is carried out. The stabilizing agent ensures that sodium hypochlorite is difficult to decompose in a hot environment, preservation time is substantially prolonged, and preservation time at normal temperature even reaches 12 months or above.

The invention discloses a preparation method of a high-strength corrugated board and belongs to the technical field of papermaking; the high-strength corrugated board is made via the steps of secondary pretreating, grinding, beating, forming and the like. The yield, breaking length and ring crush index of crude pulp made by using the preparation method of crude pulp and high-strength corrugated boards are all significantly higher than those of the pulp made by using the prior art; the preparation method meets the national industrial policies of resource conservation, environmental friendliness, circular economy, and energy conservation and emission reduction, the redundant abandoned resources such as bagasse are developed and utilized, contamination can be decreased, and economic benefit can be increased.

The present invention discloses a lithium-ion battery non-aqueous electrolyte which comprises a lithium salt, an organic solvent and an additive. According to the mass percentage content in the lithium-ion battery non-aqueous electrolyte, the additive comprises 0.5-2% of a lithium salt additive, 0.2-1.0% of a high-temperature additive, and 0.2-5% of other additives. The invention also discloses alithium-ion battery. The lithium-ion battery provided by the invention can give consideration to high-temperature and low-temperature performances, and the temperature range of the lithium-ion batteryin use is widened.

The invention discloses a benzofuran compound and a medical application thereof, and relates to a compound and an application thereof. A general formula of the compound is as shown in the specification, wherein R and R' are independently selected from hydrogen, methyl, ethyl or tertiary butyl; or the R and R', together with nitrogen atoms connected to the R and R', form pyrrolidyl, piperidyl or morpholinyl. The compound, disclosed by the invention, through an enzyme inhibiting property efficacy and other biochemical parameters thereof, can achieve an effective treatment effect by an expected usable dosage range which is about 0.01-10mg / kg per day; the compound is bound or embedded in a soluble and / or biodegradable polymer and is coated on a Stent's impression material; such polymer contains polyvinylpyrrolidone, polyhydroxy-propyl isobutylene amide-phenol, and a cross-linked or amphiphilic block copolymer of hydrogel.

The invention relates to the technical field of papermaking, in particular to a papermaking process for improving the durability and the waterproof properties of paper. The papermaking process includes adding components A after plant fiber raw material pulping steps and before bleaching steps; adding components B before gluing steps in preparation procedures. The components A comprise diethylene triaminepentaacetic acid, sodium dodecyl sulfate and modified chitosan. The components B comprise plant poly-gum, pyrethrin, additive plant extract and modified dialdehyde starch. The papermaking process has the advantages that influence of metal ions on paper pulp bleaching can be effectively reduced, fibers can be effectively swollen up, and the paper is easy to dry; grain phenomena can be reduced, the strength of the paper can be enhanced, the hydration liquid permeation resistance of paper sheets can be improved, and excellent antibacterial and insect prevention effects further can be realized; various added components are nontoxic and harmless, and accordingly the papermaking process is safe and environmentally friendly and has a high practical value and an excellent application prospect.

The invention discloses a lithium-ion battery electrolyte which comprises a lithium salt, an additive and a non-aqueous solvent, and the additive comprises the following components in percentage by mass in the lithium-ion battery electrolyte: 0.1-5% of an aryl sulfur-containing ester additive and 0.1-6% of a phosphorus-containing lithium salt additive. According to the lithium-ion battery electrolyte, the safety performance and the cycling stability of the battery are improved, and the cycling performance and the coulombic efficiency of the battery are improved.

The invention provides a lithium titanate secondary battery which comprises an anode pole piece, a cathode pole piece and PC-based electrolyte. The secondary battery is characterized in that the PC-based electrolyte is prepared from electrolyte lithium salt, lithium tetrafluoro(oxalato)phosphate (LTFOP), ethylene sulfate (DTD) and a PC-based organic solvent. According to the secondary battery, a film can be formed by reducing before charging and lithium-intercalation of a lithium titanate cathode by utilizing the high potential (1.75V vs Li+ / Li) reduction characteristic of lithium tetrafluoro(oxalato)phosphate, catalytic decomposition of the Ti-O active part in titanium titanate for electrolyte can be inhibited, and a lithium titanate battery is prevented from producing gas at high temperature; and oxygenolysis of electrolyte on the cathode surface and dissolution of transition metal ions in a cathode material can be reduced by utilizing the characteristic of ethylene sulfate forming a film on a cathode surface, and thus the circulating service life of a lithium titanate battery can be prolonged.

The invention relates to the technical field of papermaking and specifically relates to a high-quality antibacterial insect prevention paper manufacturing technology. The manufacturing technology comprises the steps: adding an ingredient A which is prepared from diethylene triaminepentaacetic acid, sodium dodecyl sulfate and modified chitosan after a plant fiber raw material pulping step and before a bleaching step and adding an ingredient B which is prepared from plant multi-glue, pyrethrin, hyperplastic plant extract and modified dialdehyde starch in a preparation process before a gluing step. The manufacturing technology disclosed by the invention can effectively reduce effects of metal ions to paper pulp bleaching, so that fiber can be better swelled, and paper can be dried more easily; in addition, the silk flow phenomenon is reduced, and paper strength is improved; meanwhile, seepage resistance of paper to hydration liquid is improved, and a good antibacterial insect prevention effect is achieved; all the added ingredients have no toxin and harm, so that safety and environmental friendliness are achieved; thus, the manufacturing technology has higher practical value and a good application prospect.

A composite positive electrode of a high-voltage solid-state battery and a preparation method thereof belong to the technical field of all-solid-state battery systems. The purpose of the present invention is to solve the problem of low cut-off voltage of the battery caused by the voltage window of the all-solid polymer electrolyte, and it is difficult to match the high voltage positive stage. In the bottle, add acetone solvent and stir to dissolve, stir for 12-24h, then add 1% azoisobutyronitrile based on the total mass of the polymer monomer as a thermal initiator, and continue stirring for 12-24h; the ternary LiNi 0.8 Co 0.1 Mn 0.1 O 2 The positive active material and carbon nanotubes are added into the container, then the block copolymer binder precursor solution in step 1 is added, and the mixture is stirred on a stirrer for 24-36 hours to make it evenly mixed; a pole piece is prepared. The present invention replaces the traditional lithium ion battery positive stage binder with a block copolymer electrolyte with good lithium ion conducting properties, so as to enhance the lithium ion diffusion capability inside the positive stage.

The invention relates to the technical field of lithium-ion batteries, in particular to an electrolyte of the lithium-ion battery and the lithium-ion battery containing the electrolyte. The electrolyte comprises a lithium salt, a non-aqueous organic solvent and an additive, wherein the additive comprises a film-forming additive A and a stabilizing additive B; the stabilizing additive B is a chainlike disulfonic acid ester compound as shown in a formula I and / or a formula II; and the film-forming additive A forms an SEI film on a negative electrode surface of the battery and the side reaction of a negative electrode interface and the electrolyte is reduced, so that the film-forming additive A is an necessary precondition that the battery has relatively good cycle performance. The stabilizing additive B can form a CEI film on a positive electrode surface, the activity of a positive electrode interface and the electrolyte is inhibited, direct contact oxidation of a positive electrode and the electrolyte is reduced, meanwhile, the structure stability of a positive electrode material is improved and the structure is not easy to collapse and crush due to generation of the stress, so that the electrolyte has excellent high-temperature storage performance and high-temperature cycle performance through combination of the additive A and the additive B.

The invention discloses a primary treatment solution for producing high strength corrugated paper by utilizing a bleaching process and application thereof, and belongs to the technical field of papermaking. The primary treatment solution is prepared from the following raw materials in parts by weight: 8-12 parts of octadecanamide, 5-9 parts of fatty alcohol-polyoxyethylene ether, 1.5-2.5 parts ofsodium dodecyl benzene sulfonate, 2.4-4.5 parts of sodium alkyl ester sulfonate succinate, 0.1-0.2 part of cellulase and 70-160 parts of water. The process accords with the industrial policy of national resource conservation and circular economy, and can be used for reducing pollution and improving economic benefit by developing and utilizing rich and waste material resources of bagasse and the like.

The invention discloses a benzofuran compound and a medical application thereof, and relates to a compound and an application thereof. A general formula of the compound is as shown in the specification, wherein R and R' are independently selected from hydrogen, methyl, ethyl or tertiary butyl; or the R and R', together with nitrogen atoms connected to the R and R', form pyrrolidyl, piperidyl or morpholinyl. The compound, disclosed by the invention, through an enzyme inhibiting property efficacy and other biochemical parameters thereof, can achieve an effective treatment effect by an expected usable dosage range which is about 0.01-10mg / kg per day; the compound is bound or embedded in a soluble and / or biodegradable polymer and is coated on a Stent's impression material; such polymer contains polyvinylpyrrolidone, polyhydroxy-propyl isobutylene amide-phenol, and a cross-linked or amphiphilic block copolymer of hydrogel.

The invention discloses a hydrogen peroxide concentration device, which relates to the technical field of hydrogen peroxide safety. The hydrogen peroxide concentration device includes a filter device communicated with the inlet of the raw material, an evaporation device connected with the filter device in a cut-off manner, and a condensation pipeline connected with the evaporation device, the decompression device, and the concentrated hydrogen peroxide chamber respectively. A heat-dissipating component is provided near the inlet of the condensing pipe in the evaporation device. Impurities such as organic matter and metal ions in hydrogen peroxide produced by industrial devices can be removed by the set filter device, thereby inhibiting liquid-phase catalytic decomposition. Through the action of the decompression device, decompression evaporation can be realized, the boiling point of hydrogen peroxide is lowered, and the distillation temperature is controlled within a safe range. If local abnormal decomposition occurs in the evaporation device, the heat dissipation component can disperse the decomposition heat in time and suppress the occurrence of decomposition explosion.