102results about How to "Commercially available" patented technology

The invention discloses a ternary rubber composite with a wide temperature range and high damping property and a preparation method thereof. The preparation method of the ternary rubber composite comprises the following steps of: firstly plasticating 100 parts by weight of butyl rubber, 10-40 parts of butyronitrile rubber and 160 parts of chloroprene rubber separately at 40-100 DEG C for 1-20 minutes and blending to obtain a blend; then, adding 2-32 parts by weight of vulcanizer, 7-17 parts by weight of vulcanization accelerating agent and 5-100 parts of filler the blend of the butyl rubber, the butyronitrile rubber and the chloroprene rubber to obtain a gross rubber; and finally standing the gross rubber for 8-24 hours, and vulcanizing at 100-200 DEG C and 5-20 MPa for 1-60 minutes to finally obtain the required ternary rubber composite. According to the invention, the preparation method is simple, the prepared vulcanized rubber has excellent damping property in a wider temperature range larger than 110 DEG C as well as excellent physical and mechanical properties; as a damping material, the ternary rubber composite can be widely used in damping and noise reduction aspects.

The invention discloses a wiring failure monitoring system for an internal key of an IGBT (insulated gate bipolar transistor) module. The wiring failure monitoring system is characterized in that the system comprises a gate drive and protective circuit unit, a beam voltage and current monitoring unit, a gate voltage monitoring unit, a bottom plate temperature acquiring unit, a controller unit and a man-machine interface display unit; the operating method of the system comprises the steps of signal acquiring, signal conditioning, signal conversion, failure diagnosis and man-machine exchange; the wiring failure monitoring system has the advantages that (1) a failure monitoring method is quick and accurate; (2) a wiring failure of the internal key of an IGBT is monitored in real time; (3) the rapidity and instantaneity of the monitoring are good; (4) the system is higher accuracy, and has a commercial application prospect; and (5) the system has generality for a power semiconductor device controlled by a switch.

The invention provides a method for treating water by using singlet oxygen produced from peroxymonosulfate under induction of inorganic solid peroxide and relates to a water treatment method. The water treatment method is used for solving the problems of a photosensitive method for generating singlet oxygen that a light source needs to be additionally added, secondary pollution is caused, and the utilization rate of singlet oxygen generated by adopting a chemical method is low. The method for treating water comprises the following steps: adding the inorganic solid peroxide and the peroxymonosulfate to water, reacting and stirring so as to complete the water treatment, wherein the water to be treated is source water and wastewater. According to the water treatment method, after the peroxide is dissolved in water, hydrogen peroxide slowly released reacts with the peroxymonosulfate rapidly to continuously generate the low-concentration high-activity singlet oxygen which can be efficiently utilized by pollutants, the self decomposition of the singlet oxygen is reduced, and the utilization rate of the singlet oxygen is increased. The method has the advantages that the pollution removal efficiency is high, no poisonous or harmful byproducts are generated, the additional equipment is not needed; and as solid reagents, the inorganic solid peroxide and the peroxymonosulfate are convenient to transport and store and are suitable for emergency treatment.

The invention discloses a water treatment method for oxidation algae removal with high-activity singlet oxygen, and relates to methods for algae removal. The problems that in a pre-oxidization (chlorine and ozone) algae removal method, equipment needs to be additionally arranged, the operation is complex, and poisonous and harmful by-products are easily produced are solved. The water treatment method for the oxidation algae removal comprises the steps that solid bleaching powder and inorganic solid peroxide are added to water with algae, stirring is carried out, and coagulation, precipitation, filtration and disinfection are carried out in sequence. Hypochlorite ions provided by the bleaching powder in the method for the algae removal fast react with hydrogen peroxide released after the peroxide is dissolved in water to generate the high-activity singlet oxygen, algae cells can be fast killed, algae inactivation is achieved, and the aim of the algae removal is achieved. The high-activity singlet oxygen can be directly added for use as a solid reagent, equipment does not need to be additionally arranged, the operation is simple and easy to carry out, transport and storage are convenient, the poisonous and harmful by-products are not produced, and the method can be applied to water plants in a large scale and is more suitable for emergency treatment in the algae large-scale bloom process.

The invention discloses a water treatment compound agent for removing organic pollutants in an oxidation mode with high-activity singlet oxygen and a water treatment method of the water treatment compound agent, and relates to water treatment agents and methods for removing pollution in oxidation modes. The problems that when the singlet oxygen is produced through a photosensitization method, a light source needs to be added, secondary pollution is generated, and the use efficiency of the singlet oxygen in a chemical method is low are solved. The water treatment compound agent is composed of bleaching powder, inorganic solid peroxide and powdered activated carbon, and the mass ratio of the bleaching powder to the inorganic solid peroxide to the powdered activated carbon is (1-10):1(1-10). According to the water treatment compound agent, hypochlorite ions provided by the bleaching powder reacts with hydrogen peroxide slowly released after the peroxide is dissolved in water to generate the high-activity singlet oxygen, and through a micro-interface provided by the powdered activated carbon, the self-decomposition of the singlet oxygen can be restrained, the survival time of the singlet oxygen can be prolonged, and the use ratio of the singlet oxygen is improved. The water treatment compound agent is high in efficiency of removing the organic pollutants in the oxidation mode, cannot generate poisonous and harmful by-products, and is convenient to transport and store and more suitable for emergency treatment.

The invention provides a preparation method of droxidopa. The preparation method comprises the following steps: taking 3,4-dihydroxy benzaldehyde as a raw material, performing hydroxyl protection through benzyl chloride to obtain 3,4-dibenzyloxybenzaldehyde, enabling 3,4-dibenzyloxybenzaldehyde and glycine to generate asymmetric condensation reaction under the catalysis of L-threonine aldolase/pyridoxal phosphate, obtaining an L-threo and erythro-3-(3,4-dibenzyloxyphenyl) serine acetate intermediate state through acetic acid salt formation, obtaining intermediate L-threo-3-(3,4-dibenzyloxyphenyl) serine after the intermediate state is heated with water and backflows, and finally removing protected benzyl through Pd/C to prepare the droxidopa. The preparation method provided by the invention has the benefits that the reaction steps are shortened, the process is simplified, meanwhile, the whole total reaction yield is obviously improved, and the raw material cost can be more greatly reduced.

The invention provides a method for cleaning polluted membrane by using singlet oxygen produced from peroxymonosulfate under induction of inorganic solid peroxide and relates to a membrane cleaning method. The method for cleaning a polluted membrane comprises the following steps: adding the inorganic solid peroxide and the peroxymonosulfate in a tank containing a polluted membrane module, stirring, soaking, and finally rinsing. According to the method, after the peroxide is dissolved in water, hydrogen peroxide slowly released reacts with the peroxymonosulfate rapidly to generate the high-activity singlet oxygen which directly acts on biological cells polluting the membrane to rapidly destroy enzymatic structures, thus achieving a good membrane cleaning effect. As environmentally-friendly reagents, the inorganic solid peroxide and the peroxymonosulfate do not generate poisonous and harmful byproducts in the cleaning process, and waste liquid can be directly discharged after the membrane is cleaned; and as solid reagents, the inorganic solid peroxide and the peroxymonosulfate can be directly added for use without need of additional equipment. The method has the advantages that the operation is simple and practicable, and the reagents are convenient to transport and store, low in cost and easy to obtain.

The invention discloses a phosphamide-(di) secondary amine dual-functional catalyst and a synthesis method thereof. The structure of the catalyst is represented as follows, and the synthesis method comprises the steps of performing reaction on simple and readily available chiral 1,2-diamine and various phosphoryl chloride, and performing reaction with an aldehyde compound to prepare the phosphamide-(di) secondary amine dual-functional catalyst with chirality and efficient catalysis activity. The prepared catalyst is novel in structure and stable in property; the synthesis method is simple, and the catalysis activity is high; the synthesis method is simple and has the outstanding characteristics of wide application range, mild reaction condition, simplicity and convenience in operation and the like. The structural formula of the catalyst is shown in the description.

The invention belongs to the field of fine chemicals and specifically relates to a preparation method for perfluoro vinyl ether with a sulfuryl fluoride group as a terminal group. The perfluoro vinyl ether with the sulfuryl fluoride group as the terminal group is prepared in the manner of taking fluorosulfonyl perfluoroalkyl fluoride as a raw material and performing salt forming reaction, fluoridation and reduction reaction. The perfluoro vinyl ether with the sulfuryl fluoride group as the terminal group is CF2=CFOCF2(CF2)nSO2F, wherein n is equal to 1-3. According to the invention, the fluorosulfonyl perfluoroalkyl fluoride is taken as the raw material, the raw material is commercialized and easily acquired, the cost is low, the high-temperature pyrolyzing route and the unconventional monomer are avoided, the product is acquired through high-yield reaction, much fluorine-containing effluent is prevented from generation and the cost is lowered. The yield is higher, the waste of fluorine resource is avoided and the generation of fluorine-containing waste is reduced.

The invention discloses a cannabidiol intermediate and a preparation method and application thereof. A high-quality intermediate can be obtained by using trans-2-octenyl methyl ester and tert-butyl acetoacetate as raw materials through two-step reaction of cyclization and aromatization, and the intermediate has a structural formula as shown in specification. The intermediate in each step can be purified through recrystallization, single impurities can reach the index of the intermediate of crude drug, the total yield of qualified pure crude drug prepared from the intermediate prepared by the method can reach 50-60%, the process is obviously improved, and the method has a good industrial application prospect.

The invention discloses a water treatment method for oxidative degradation of organic pollutants by catalyzing monopersulfate through manganese sand, and relates to a water treatment method which solves the problems that an existing pre-oxidizing agent is poor in oxidizing ability, poisonous and harmful byproducts are liable to generate, the existing pre-oxidizing agent is inconvenient to use andoperate, and operation investment cost is high. The water treatment method comprises the following steps: adding the monopersulfate into to-be-treated water, introducing water into a filter bed with manganese sand to filter, catalyzing the monopersulfate by manganese sand to generate a sulfate radical free group to oxidize and degrade organic pollutants in water, thereby completing oxidative removal on organic substances. The monopersulfate is stable in chemical property, is convenient to transport and store, and is normally listed as a drinking water disinfector product summary in China; andthe water treatment method is simple to operate, does not need to additionally arrange equipment, does not change the original treatment process of the water feeding plant, can be applied on a large scale; and the monopersulfate is catalyzed by the manganese sand, so that the organic substance removal efficiency is high; and moreover, residual monopersulfate further can be used for sterilizing filtered water as a disinfector, so that poisonous and harmful byproducts are not generated.

The invention provides a method for cracking sludge by virtue of singlet oxygen and relates to a sludge cracking method. The method comprises the steps of adding a catalyst pyroracemic acid and antioxidants peroxides (peroxymonosulfate and percarbonate) into to-be-cracked sludge, stirring to react, pumping supernate of the cracked sludge back into an aeration tank, and carrying out treatments including dehydration and the like on the residual sludge. According to the method, a bisepoxy intermediate is generated by catalyzing peroxides by virtue of pyroracemic acid and further reacts with peroxides to generate singlet oxygen and pyroracemic acid, peroxides are continuously catalyzed by generated pyroracemic acid, and generated pyroracemic acid plays a role of circular catalysis during reaction, generated high-activity singlet oxygen is capable of damaging the structure of sludge floc and releasing bound water, improving the dehydration performance of sludge and damaging the cell structures of microorganisms. The method has the characteristics that the sludge treatment effect is good, toxic and harmful products are not generated, a required carbon source is provided for sewage treatment, and the catalyst pyroracemic acid and the antioxidants peroxides are environmentally friendly and safe and have no toxic and side effects.

The invention provides a magnesium-tin-zinc-aluminum-manganese wrought magnesium alloy and a preparing method thereof, and belongs to the technical field of magnesium alloys. The magnesium alloy comprises, by mass percent, 1.5%-4.5% of Sn, 1%-3% of Zn, 0.5%-2.5% of Al, 0.1%-0.5% of Mn and the balance Mg and unavoidable trace impurity elements. The magnesium alloy does not contain noble-metal alloy elements, the total alloy element content is 3.1%-10.5%, and the alloy cost is low. The alloy in the series is high in casting state plasticity, machining and deformation are easy, recrystallization is generated after heat machining deformation, grains are obviously refined, the strength is obviously improved, the high plasticity is kept, and cold machining deformation on the alloy is facilitated. The strength and plasticity of the alloy in the series are higher than those of a traditional commercial use AZ31 wrought magnesium alloy.

The invention provides an organic-inorganic composite electrolyte. The composite electrolyte comprises doped pyrophosphate and a high temperature-resistant polymer, and has better electrical properties and a higher density than the single doped pyrophosphate, and a fuel cell assembled by using the composite electrolyte has a large output power density under a medium temperature condition. The invention also provides a method for preparing the composite electrolyte. The method comprises the following steps: mixing the doped pyrophosphate with the high temperature-resistant polymer at normal temperature, heating the obtained mixture until the mixture is viscous, and laying the viscous mixture on the surface of a mold. The method is simple to operate and is easy to realize.

The invention belongs to the field of chemical pharmacy, and particularly discloses a synthetic method of cannabidiol. The synthetic method comprises the following steps: S1, adopting 2, 4-dimethoxy-6-amyl methyl benzoate as a raw material, and carrying out a coupling reaction on the raw material and (1S, 4R)-1-methyl-4-(1-methylvinyl)-2-cyclohexene-1-ol under a Lewis acid catalysis condition to obtain an intermediate (I); S2, performing high-temperature decarboxylation on the prepared intermediate (I) under the action of strong alkali to prepare an intermediate (II); and S3, removing methyl from the prepared intermediate (II) under the action of boron tribromide to obtain the final product cannabidiol. The purity of the cannabidiol obtained by the preparation method disclosed by the invention is 99.90-99.99%; the total yield of the finally prepared bulk drug with qualified purity can reach 60-80% at most, the process is obviously improved, and the method has a good industrial application prospect.

The invention relates to a reverse osmosis concentrate treatment method and especially relates to a method for singlet state oxygen treatment on reverse osmosis concentrate. The method comprises adding pyruvic acid into water to be treated, carrying out reverse osmosis treatment, adding peroxides (such as peroxymonosulfate and percarbonate) into the pyruvic acid-containing reverse osmosis concentrate, carrying out stirring and carrying a reaction process. Pyruvic acid is bonded to calcium and magnesium ions in water to be treated so that a pyruvate complex is produced and scale inhibition effects are obtained, the peroxides undergo a reaction in the presence of the pyruvate as a catalyst to produce singlet state oxygen, and the produced high-activity singlet state oxygen can fast react with pollutants in the reverse osmosis concentrate, oxidize organic matters and inactivate microbes so that pollutant removal is realized. The method utilizes green and safe pyruvic acid and peroxides without toxic or side effect, has high reaction depollution efficiency, does not produce poisonous and harmful by-products and is a high-efficiency reverse osmosis concentrate treatment method with functions of complexation scale inhibition and oxidation pollutant removal.

The invention provides a method for utilizing singlet oxygen for removing algae and relates to an algae removal method. According to the algae removal method, a catalyst pyruvic acid and an oxidizing agent peroxide such as monosulfate and percarbonate are added into water containing algae, and stirred, and react to complete algae removal. Pyruvic acid catalyzes the peroxide to generate a double-resin intermediate, the double-resin intermediate reacts with the peroxide to generate singlet oxygen and pyruvic acid, generated pyruvic acid continues to catalyze the peroxide, and has a circular catalytic effect in the reaction process, and the generated high-activity singlet oxygen acts on the algae fast, kills algae cells, enables the algae to be inactivated, and achieves the purpose of algae removal. The algae removal method has the advantages that algae removal efficiency is high, generation of poisonous and harmful products is avoided, the catalyst pyruvic acid and the oxidizing agent peroxide are environmentally friendly, safe and free of toxic and side effects, can be applied on a large scale and are more suitable for emergency treatment of algae outbreak, and the reaction is affected little by the water body condition.

The invention discloses a high-damping modified polyurethane material and a preparation method thereof. The method comprises the following steps: adding graphene to polyol, introducing a terminal -NCOgroup into the molecular chain of polyurethane, then adding hindered phenol to obtain a hindered phenol-terminated polyurethane prepolymer having a good storage stability, adding a fat curing agent,and performing room-temperature curing to obtain the high-damping polyurethane material. The damping performance of the high-damping polyurethane material is greatly higher than that of a polyurethanematerial, and the method has the advantages of simple process, low cost, and no need of additional processing devices or tedious steps, and has a great prospect in the preparation of the polyurethanematerial with a high damping performance.

The invention relates to a polyethylene glycol-polycaprolactone phase change fiber and a preparation method thereof, and belongs to the field of phase change nanofiber materials. The fiber is of a core-shell structure, polyethylene glycol serves as a core layer, polycaprolactone serves as a shell layer, the weight-average molecular weight of polyethylene glycol is 1000, and the weight-average molecular weight of polycaprolactone is 80000; and based on 100% of the mass of the fiber, the mass fraction of polyethylene glycol is 21%-48%, and the mass fraction of polycaprolactone is 52%-79%. According to the method, a polyethylene glycol spinning solution is used as an inner tube spinning solution, a polycaprolactone spinning solution is used as an outer tube spinning solution, coaxial electrostatic spinning is performed, and the phase-change fiber is obtained after a solvent is removed. The phase-change fiber shows a complete core-shell structure, has the characteristics of two raw material, has excellent thermal properties and mechanical properties, can adjust the temperature within a certain range, and is environmentally friendly and biodegradable; and the phase-change fiber can be applied to the field of medical phase-change materials and the field of functional textile materials.

The invention relates to a novel method for synthesizing clopidogrel bisulphate and an intermediate thereof. The novel method includes subjecting 2-thiophenethylamine and N-benzyl-2-(2-chlorophenyl)-2-carbonyl acetamide to a condensation reaction to generate imine; reducing the imine into corresponding secondary amine through asymmetric hydrogenation; cyclizing the secondary amine and formaldehyde under acidic conditions to obtain clopidogrel free base, and acidifying the clopidogrel free base by sulfuric acid to obtain the clopidogrel bisulphate. The novel method has the advantages that thesynthetic route is short, the reactions involved are classical organic chemical reactions, reaction conditions are moderate, and the method is simple to operate and has high enantioselectivity, yieldand conversion number; most substrates have the conversion rate of 99% or more and the ee value of 97-99% when the millionth of catalysts is used, the highest conversion number reaches 100,000, and accordingly, the method has extremely high industrial application value.