65results about How to "Suitable for industrial development" patented technology

The method for preparing high molecular weight fatty polyester whose number-average molecular weight is 28000-40000 and weight-average molecular weight is 6000-13000 by adopting two-stage process is characterized by that it utilizes binary acid, dibasic alcohol and (or) hydroxy acid to make polycondensation reaction to prepare terminal hydroxyl polyester performed polymer, then adopts organic silicon azane compound as chain extender to make chain expansion reaction, the mole ratio of terminal hydroxyl polyester performed polymer and organic silicon azane chain extender is 1:0.8-2.0, and the Chain expansion reaction temp. is at 90-200 deg.C. It is simple in preparation process, non-toxic, high-effective, moderate in reaction condition, and suitable for industrial production.

The invention discloses a method which utilizes impinging stream equipment to prepare lithium ion battery anode materials. The method comprises the following steps: hydroxides or soluble salts of Li and soluble salts of transition metals are respectively dissolved into deionized water to form solutions, then the two solutions are impinged with each other in the impinging stream equipment at a speed of 2 m / s-30 m / s and react with each other, a sediment produced by the reaction is moved into a high temperature furnace after being washed and dried, calcined for 3h-15h at 300 DEG C-700 DEG C and then cooled down, finally a Li-ion battery anode material is obtained. The method provided by the invention has simple process, the reaction time can be effectively shortened and the production efficiency can be improved; the Li-ion battery anode material obtained by adopting the method has even grains, small grain size and high electrochemistry capacity.

The invention belongs to the technical field of plant ingredient extraction, and discloses a method for preparing diosgenin from B acid DES (deep eutectic solvent) hydrolysis. Choline chloride and B acid are heated to a molten state so as to obtain a DES; dioscorea zingiberensis rhizome raw material powder, the DES and petroleum ether are added into a reactor; the temperature is raised to 100 to 130 DEG C; stirring and hydrolysis reaction are preformed; reaction liquid is subjected to filtering or centrifugal separation; a liquid petroleum ether phase is taken; petroleum ether recovered through evaporation; the diosgenin in the rest solid phase is extracted by using water saturation normal butanol solution; the normal butanol and the water are recovered through evaporation; the diosgenin is obtained. The characteristic that the B acid DES and the diosgenin can form strong hydrogen bonds is utilized, so that the DES can realize the selective extraction of the diosgenin from the raw materials for hydrolysis. The method has the advantages that the reaction selectivity is good; the pollution is low; the reaction conditions are mild; the problem of high pollution caused by simultaneoushydrolysis of cellulose and starch in the raw materials into sugar in a conventional hydrolysis process can be solved.

The invention belongs to the technical field of aircraft fuel systems, and relates to a design and a structure of a brushless multi-working-condition direct-current electrically-driven pump. The brushless multi-working-condition direct-current electrically-driven pump is characterized in that a brushless direct-current motor with multi-state working capability drives an impeller which is arranged on a shaft of the brushless direct-current motor to rotate; pumping fuel oil flows through a filter screen, a pump core shell and the impeller to be subjected to centrifugal supercharging, then flows into a radial guide vane for further diffusion supercharging and flows in an axial direction; the supercharged fuel oil passes through an annular flow channel positioned between a pump cover and the shell of the motor to converge and is output through a check valve at the top of the pump cover and a valve shell. The former fuel delivery pump is designed according to the maximum working condition even if being in multiple working states and has no self-adjusting capability, the flow pressure is controlled by virtue of an adjusting valve and the working is carried out on a single curve; however, due to the multiple working conditions which are designed for being matched with the brushless multi-working-condition direct-current electrically-driven pump, the requirement on the current working condition can be rightly met when the pump is in various states, and the pump works on a group of similar flow and pressure curve so as to form a larger working enveloping range.

The invention discloses a reactor for hydrogen production through decomposition of hydroiodic acid and a hydrogen production method of the reactor and belongs to the technical field of chemical equipment and hydrogen production. The reactor is a U-shaped tubular heat exchange reactor and comprises a channel, a tube plate, a barrel, a U-shaped reaction tube and other components. Parts making contact with hydroiodic acid such as the U-shaped tube is made of corrosion-resistant silicon carbide or nickel base alloy, and the nickel base alloy comprises HastelloyB, C or X series alloy; parts makingno contact with hydroiodic acid such as the barrel is made of martensitic steel, austenitic steel or nickel base alloy. The hydrogen production method comprises the steps as follows: the U-shaped tubular heat exchange reactor is used as a hydroiodic acid decomposition reactor, a catalyst is placed in the U-shaped tube, high-temperature helium or high-temperature molten salt enters the barrel via aheating medium inlet, and reaction material hydroiodic acid is introduced into the U-shaped tube for decomposition for hydrogen production. The reactor only comprises one tube plate and few sealing surfaces and has better heat transfer performance and high loading capacity. The hydrogen production method is simple, feasible and reliable in operation.

The invention relates to the technical field of synthesis processes of insecticides, and discloses a preparation method of chlorantraniliprole, which comprises the following steps: 1) adding 4-8 partsof maleic anhydride and 4-8 parts of methanol into a single-necked bottle, stirring the mixture, heating to 50 DEG C, and carrying out heat preservation reaction for 0.5-1.5 hours to obtain monomethyl maleate; and 2) cooling 80-120 parts of a hydrogen bromide-glacial acetic acid solution to 0 DEG C, then dropwise adding 3-5 parts of the monomethyl maleate, after addition is completed, carrying out heat preservation and stirring for 3-7 min, so that a large amount of a yellow viscous substance appears, and the monomethyl 3-bromomaleate can be prepared. The invention discloses a preparation method of chlorantraniliprole. The maleic anhydride, 2,3-dichloropyridine and 2-amino-3-methylbenzoic acid are adopted as starting materials to synthesize the target compound chlorantraniliprole througha convergent reaction. The structure is determined through HNMR, the route is mild in reaction condition, easy and convenient to operate and separate, raw materials are easy to obtain, special equipment is not needed, industrial production is easy to achieve, the action mechanism is novel and unique, and wide application and development prospects are achieved.

The invention discloses a new and old pavement base splicing interface treatment material, belongs to the field of road engineering, and aims to provide a new and old pavement base splicing interfacetreatment material for highway reconstruction and extension engineering. The new and old pavement base splicing interface treatment material comprises, by weight, 50-100 parts of an organic silicon modified polyurethane emulsion, 1-3 parts of organic modified rectorite, 100-200 parts of cement, 0.5-1.5 parts of a water reducer, 20-50 parts of water and 0.5-2.5 parts of a composite retarder. The new and old pavement base splicing interface treatment material is used for solving the problems of existing base splicing interface materials, and has the advantages of simple preparation process, stable performances, high bonding strength and good splicing effect.

The invention relates to the technical field of insect-resist agents. The invention relates to an insect repellent, in particular to a biological insect repellent and a preparation method and application thereof. The biological insect-resist agent is prepared from the following raw materials: cortex meliae, star anise, dry red peppers and fermentation strains; the fermentation strains comprise saccharomycetes, lactic acid bacteria, photosynthetic bacteria and actinomycetes. 100 kg of fermentation liquor needs following raw materials: 0.5-0.8 kg of cortex meliae, 0.5-0.8 kg of star anise, 0.5-0.8 kg of dry red peppers and 5-6 kg of EM.1 strains; according to the biological insect-resist agent, the raw materials are simple and easy to obtain, and after the biological insect-resist agent is sprayed to leaf surfaces, metabolism of plants can be enhanced, protective film cuticles of the leaves are strengthened, and pathogenic bacteria are prevented from entering the leaves; in addition, theleavening agent contains an ester component, which is not decomposed in the body of the herbivorous insect and generates physiological barrier damage and is lethal; therefore, due to the action of stimulating substances such as capsaicine, the insect can feel uncomfortable and escape from the body, the insect preventing and expelling effect is obvious, and the preparation process is simple, convenient to use, low in production cost and suitable for industrial development.

The invention discloses a method for preparing hydrogenated dialkyl azodicarbonic acid. The method comprises the steps of: mixing hydrogenated dimethyl azodicarbonic acid with sodium alkoxide solution, heating and reacting for 1-24h, and producing transesterification reaction between the dimethyl azodicarbonic acid and alcohol under the catalytic action of sodium alkoxide; after the reaction is completed, regulating the pH value of the solution to 3-8, extracting an organic phase for 2-3 times with dichloromethane, combining the organic phases, drying for 8-12h with anhydrous sodium sulfate, and then performing recrystallization to obtain the hydrogenated dialkyl azodicarbonic acid ROOCNHHNCOOR, wherein R is alkyl containing 2-16 carbon atoms. According to the method, the hydrogenated dimethyl azodicarbonic acid is used as raw material, and is green and environment-friendly, and easily available; the production cost is low, and the economy is good; the synthetic process of chloroformate ester in the traditional process can be ensured to be clean and environment-friendly, thereby meeting the green and chemical requirements; and the method for preparing the hydrogenated dialkyl azodicarbonic acid through esterification is simple to operate, short in process route, mild in reaction conditions, and high in yield, as well as suitable for industrialized development.

The method for preparing high molecular weight fatty polyester whose number-average molecular weight is 28000-40000 and weight-average molecular weight is 6000-13000 by adopting two-stage process is characterized by that it utilizes binary acid, dibasic alcohol and (or) hydroxy acid to make polycondensation reaction to prepare terminal hydroxyl polyester performed polymer, then adopts organic silicon azane compound as chain extender to make chain expansion reaction, the mole ratio of terminal hydroxyl polyester performed polymer and organic silicon azane chain extender is 1:0.8-2.0, and the Chain expansion reaction temp. is at 90-200 deg.C. It is simple in preparation process, non-toxic, high-effective, moderate in reaction condition, and suitable for industrial production.

The invention discloses a preparation method of an all-solid-state environment-friendly biopolymer electrolyte film, and relates to a preparation method for a lithium ion battery electrolyte thin film. The problems of low electric conductivity, high cost and poor environmental protection of a lithium ion battery electrolyte thin film prepared by conventional methods are solved. The method comprises the following steps: firstly, preparation of modified starch: taking a proper amount of starch, phthalic anhydride, pyridine and a solvent, under water bath conditions, blending and stirring until the solution becomes a uniform paste substance, then modifying starch with an isopropanol precipitate, next drying in a vacuum drying box, and finally grinding the obtained substance into a powder; andsecondly, preparation of the all-solid-state environment-friendly biopolymer electrolyte film: weighing cellulose, modified starch, a lithium salt and a solvent, blending and stirring, and then drying in the vacuum drying box to form the film. The prepared all-solid-state environment-friendly biopolymer electrolyte film has the advantages of good biodegradability, simple experimental process, wide sources of experimental raw materials, low cost and wide application range.