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69results about How to "Common raw materials" patented technology

Process for producing nanostructured tin dioxide lithium ion battery negative pole material

The invention belongs to the preparation field of the anode material of a lithium ion battery, and in particular relates to a method for preparing metal oxide electrode material with a nanometer structure by utilizing the in-situ synthesis method. The internal structure and the dimension of a hollow micro-sphere obtained are controlled through adjusting the pH value of a system by utilizing hydrochloric acid. Raw materials in the invention are common and are easy to obtain; an organic solvent is not required during the preparation process; the preparation process is simple; the synthesis of template materials and the participation of a surface active agent are not required during the synthetic process; the requirements to the device are low, the time consumption is less and the preparation process is simple; and a main by-product during the preparation process is water and carbon dioxide and is environment-friendly. The raw materials used in the invention are common; and the preparation conditions are not restricted by areas. The hollow tin dioxide micro-spheres have higher application prospect in the filed of electrode material, catalyst carriers and the like. The method has the advantages of cheap and easily obtained raw materials, simple preparation process, and unrestricted preparation conditions by areas, and is suitable for massive industrial production.
Owner:JILIN UNIV

Special feed for living through winter for tilapia

The invention belongs to the technical field of aquatic feeds, relating to a special feed for living through the winter for tilapia. The special feed for living through the winter for the tilapia consists of raw materials and addictives. The invention is characterized in that the raw materials comprise the following components in parts by weight: 35 parts of rice bran, 35 parts of bean pulp, 13 parts of fish meal, 14 parts of wheat middling, 1.5 parts of meat and bone meal, 0.5 part of salt and 1.0 part of vegetable oil; the addictives are vitamin C and vitamin E, the content of the vitamin C is 800-1000ppm of the raw material by weight, and the content of the vitamin E is 100-200ppm of the raw material by weight; and the rice bran, the bean pulp, the fish meal, the wheat middling, the meat and bone meal and the salt are smashed, then fully mixed with the vegetable oil and granulated, drying and cooling are carried out, the vitamin C is prepared into a water solution with the concentration of 80-100g/l, the vitamin E is prepared into a vegetable oil solution with the concentration of 10-20g/l, the water solution with the concentration of 80-100g/l and the vegetable oil solution with the concentration of 10-20g/l are sprayed on the granulated mixture, and finally, sealed package is conducted after drying. The feed has high crude protein and crude fat contents and the added vitamins C and E, and has obvious effect with above 90% of overwintering survival rate in cultivating oreochromis aureus, gift tilapia and nile tilapia.
Owner:FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI

Functionally gradient covalent organic framework membrane as well as preparation and application

The invention discloses a functionally gradient covalent organic framework membrane. The functionally gradient covalent organic framework membrane is prepared from polyethersulfone and a covalent organic framework. Preparation steps comprise the following steps: taking 1,3,5-triformylphloroglucinol and hydrazine hydrate as monomers; carrying out condensation polymerization reaction in 1,3,5-trimethylbenzene and an ethanol solvent; washing a product through tetrahydrofuran, acetone and dichloromethane in sequence; then carrying out wet-phase grinding to obtain the covalent organic framework TpHZ; dispersing the covalent organic framework TpHZ into N,N-dimethylformamide and mixing with the polyethersulfone to form a membrane casting solution; adding a certain amount of the volatile solvent tetrahydrofuran; carrying out steps including scraping, non-solvent induced phase separation, surface segregation, immersion, drying and the like on the membrane casting solution to obtain the functionally gradient covalent organic framework membrane. The functionally gradient covalent organic framework membrane has the advantages of simple and convenient preparation process, strong controllability, easiness for obtaining the raw materials and common method. The prepared membrane is used for realizing pervaporization of an ethanol-water solution system and has high permeation flux and high selectivity on water molecules; the composite membrane has good operation stability at high temperature.
Owner:TIANJIN UNIV

Sodium alginate hybrid membrane filled with hollow ZIF-8 nanoparticles as well as preparation and application of sodium alginate hybrid membrane

The invention discloses a sodium alginate hybrid membrane filled with hollow ZIF-8 nanoparticles. The sodium alginate hybrid membrane is prepared from sodium alginate and hollow ZIF-8 according to a mass ratio of 100 to (2-10), wherein the hollow ZIF-8 is prepared from zinc acetate dihydrate and 2-dimethyl imidazole according to a molar ratio of 1 to 1. A preparation method of the sodium alginatehybrid membrane comprises the following steps: firstly, obtaining the hollow ZIF-8 nano particles; then, dispersing the hollow ZIF-8 nanoparticles into deionized water, and mixing the dispersion liquid with sodium alginate to prepare a casting membrane solution; spin-coating a polyacrylonitrile base membrane with the casting membrane solution, drying, crosslinking, and re-drying to obtain the sodium alginate hybrid membrane. The preparation method has the advantages of being simple and convenient in preparation process, high in controllability, easy in obtaining of raw materials, universal inmethod, and the like. The prepared sodium alginate hybrid membrane can be used for pervaporation of an ethanol-aqueous solution system, and has high permeation flux and high selectivity to water molecules; furthermore, the hybrid membrane has good operational stability at the high temperature.
Owner:TIANJIN UNIV

Lignin serial coal water slurry dispersing agent and preparation method thereof

The invention relates to lignin serial coal water slurry dispersing agent and a preparation method thereof, and belongs to the technical field of dispersing agent which is prepared by coal water slurry. The dispersing agent comprises the following raw material components in parts by weight: 1,000 parts of alkali lignin, 20 to 50 parts of polyethylene glycol, 2 to 10 parts of carboxylic acid, 1 to 5 parts of concentrated sulfuric acid, 0.1 to 1 part of hydroquinone, 20 to 60 parts of acrylic acid, 60 to 150 parts of vinyl monomer, 200 to 400 parts of sodium sulfite, 300 to 500 parts of acetaldehyde solution, 30 to 50 parts of oxidant and 10 to 20 parts of reducing agent. Compared with the prior art, the lignin serial coal water slurry dispersing agent adopts the alkali lignin as a raw material, so that the cost is reduced, the average molecular mass of the lignin is remarkably improved, the hydrophily is obviously enhanced, and the dispersing effect is prominently improved; and in addition, the dispersing agent has the advantages of low cost, simple preparation technique, more generality of raw materials, wide sources of the raw materials, cheaper price and good modifying effect; and the resource utilization is implemented for wastes, so that the environmental pollution from the wastes is reduced.
Owner:DONGFANG ELECTRIC CORP LTD

Preparation method of nano TiO2 thin-film material

The invention discloses a preparation method of nano TiO2 thin-film material. The method comprises the following steps: firstly, preparing a pure titanium sheet into rectangular sheets of 25*15*2mm, secondly, pretreatment of the titanium sheet: sanding, degreasing, hydrochloric acidizing fluid rinsing, ultrasonic deionized water washing and vacuum drying, thirdly, laying the pretreated titanium sheet on micro-arc oxidation equipment, so as to be conducted to micro-arc oxidation, taking the titanium sheet as anode to be dipped into treating fluid and a stainless steel container with a cooling system as cathode, and fourthly, performing deionized water washing and drying to an obtained nano TiO2 thin-film, and then performing ion dipping to the thin-film, wherein experiment parameters are as follows: voltage is 420V, the preparation time is 30min, the content of Na3PO4 in a phosphate electrolyte system is 10g/L, the content of NaF is 1g/L, and the electrolyzing temperature is controlled to be below 35 DEG C. The method has the advantages that the photocatalytic degradation rate of the nano TiO2 thin-film exceeds 50 percent, the raw material is chip and common, the technology is simple, the cost is low, and the method is beneficial to industrial production.
Owner:CHANGZHOU UNIV

Field high-flux identification method for bacterial wilt resistance of sesamum indicum varieties

The invention discloses a field high-flux identification method for bacterial wilt resistance of sesamum indicum varieties. The identification method comprises the following steps: (1) cultivating a natural identification disease nursery; (2) carrying out land preparation and sowing; (3) carrying out disease nursery management; and (4) carrying out disease resistance evaluation. According to the identification method, through cultivating the natural disease nursery, the uniformity and consistency of field onset are guaranteed, and the accuracy and repeatability of the identification method are improved; and moreover, through guaranteeing the soil humidity of the natural identification disease nursery and determining the plant spacing of final thinning and the density of cultivation, the quantity of sesamum indicum varieties capable of being evaluated in one time is 2.5 times or more that of specification DB36/T 879-2015 in the prior art under the condition of the same expense and natural disease nursery area, the identification efficiency is increased while high accuracy and repeatability are guaranteed, the contradiction between short appropriate identification time and long required identification cycle is solved, and the selective breeding and popularization and application of disease-resistant varieties are accelerated and propelled.
Owner:INST OF PLANT PROTECTION JIANGXI ACAD OF AGRI SCI

Ceramic composite coating for enhancing high-temperature-abrasion resistance of steel surface of hot work die and preparing method of ceramic composite coating

The invention discloses a ceramic composite coating for enhancing the high-temperature-abrasion resistance of a steel surface of a hot work die and a preparing method of the ceramic composite coating. The preparing method includes the following steps that a mixture of Cr2O3 and SiO2 is sprayed to the surface of a base body through plasma spraying, so that the ceramic composite coating is obtained, wherein the mixture comprises, by mass percentage, 94% to 100% of Cr2O3 and 6% to 0 of SiO2, however, the adding amount of Cr2O3 does not reach 100%, and the adding amount of SiO2 does not reach zero. The ceramic composite coating and the preparing method of the ceramic composite coating have the following beneficial effects that the ceramic composite coating is high in microhardness, low in high-temperature friction coefficient, good in high-temperature-abrasion resistant performance and resistant to oxidization; by the adoption of the preparing method of the ceramic composite coating, raw materials are cheap and common, the technology is simple, cost is low, and industrial production is facilitated. The ceramic composite coating can achieve the effect of enhancing the surface of the base body of the hot work die, so that the service life of the hot work die is prolonged.
Owner:TSINGHUA UNIV +1

Method for cultivating microalgae with pig farm biogas slurry and making full use of microalgae to produce bio-oil

The invention provides a method for culturing microalgae with pig farm biogas slurry and making full use of the microalgae to produce bio-oil. The method comprises the following steps of: preparing a5-20% microalgae culture solution by using the pig farm biogas slurry, and inoculating the microalgae into the culture solution for culturing; grinding the microalgae cultured by the pig farm biogas slurry and quartz sand according to a certain mass ratio, and adding an organic solvent for extraction to realize extraction of microalgae grease and preparation of microalgae residue; carrying out esterification reaction on the microalgae grease to obtain bio-oil; and pyrolyzing the microalgae residue in a cracking device at 300-800DEG C in an atmosphere of inert gas to prepare the bio-oil again.On the basis of the existing pig manure biogas engineering, the pig farm biogas slurry is used for culturing microalgae, so that purification treatment of the pig farm biogas slurry is realized, and alarge amount of biomass energy is accumulated; by adding the additives into the biogas slurry, the growable biomass and grease content of microalgae in the biogas slurry are improved; and through full utilization of the microalgae, the energy utilization potential of the biogas slurry and the microalgae is improved, and the energy problem is relieved to a certain extent.
Owner:BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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