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111results about How to "Moderate content" patented technology

Preparation method of extinction polyvinyl chloride resin

ActiveCN105968272AEnsure matting effectGood matting effectPolyvinyl chlorideBuffering agent
The invention provides a preparation method of extinction polyvinyl chloride resin. The preparation method comprises the following steps: acquiring vinyl chloride monomer, deionized water, an initiator, a buffering agent, a dispersant and a matting agent which serve as reaction raw materials; performing pre-emulsification treatment on the matting agent by use of part of the dispersant; adding the vinyl chloride monomer, the deionized water, the initiator, the buffering agent and the rest dispersant into a polymerization kettle, performing polyreaction, and adding the matting agent subjected to pre-emulsification treatment during the reaction process so as to prepare the extinction polyvinyl chloride resin, wherein the matting agent is a monomer or polymer containing two or more reaction active functional groups, the dosage of the deionized water accounts for 105-200% of the weight of the vinyl chloride monomer, the dosage of the initiator accounts of 0.04-0.18% of the weight of the vinyl chloride monomer, the total dosage of the dispersant accounts for 0.04-0.15% of the weight of the vinyl chloride monomer, the dosage of the buffering agent accounts for 0.06-0.18% of the weight of the vinyl chloride monomer, and the dosage of the matting agent accounts for 0.01-8.0% of the weight of the vinyl chloride monomer. The prepared extinction polyvinyl chloride resin is fewer in crystal spot and good in extinction effect.
Owner:HANGZHOU ELECTROCHEM GROUP

Rapid salting method of low-salt salted pork

The invention relates to a rapid salting method of low-salt salted pork. The method comprises the following steps of 1. cutting selected streaky pork with equivalent fat-muscle into strips; 2. measuring table salt and pork according to the salt-to-pork ratio being 3 to 4 percent, dissolving 2 percent of table salt into little water, and uniformly injecting the salty water into the pork by utilizing a salty water syringe; 3. respectively measuring 2 to 2.5 percent of white spirit, 0.2 to 0.6 percent of paprika powder and 0.2 to 0.4 percent of fennel powder, mixing the white spirit, the paprika powder and the fennel powder with the residual table salt, and kneading the pork with the mixture; 4. arranging the pork into a rolling kneading machine, and vacuum intermittently rolling kneading the pork at the low temperature at the condition of controlling the temperature at 0 to 4 DEG C, the vacuum degree to be 0.08MPa and the rotating speed to be 10r/min,; 5. hanging the pork under the condition that the temperature is 8 to 12 DEG C and the relative humidity is 60 to 70 percent, and standing and drying the pork for 2days; 6. Carrying out fire curing; 7. naturally carrying out air drying and cooling for 24h, and carrying out vacuum packaging on the pork to obtain a finished product. The low-salt salted pork is bright in color, delicious in taste, tender in tissue and obvious in scent and can be reserved for one year under the vacuum packaging cold storage condition without going bad.
Owner:西林县招商中心

Rare earth-magnesium-transition metal base hydrogen storage metal and preparation method thereof

The invention relates to a rare earth-magnesium-transition metal base hydrogen storage metal with high hydrogen storage capacity and moderate hydrogen storage temperature and preparation method thereof. The metal is characterized in that the chemical formula thereof is REMgxMy, wherein x is more than 1 and less than 2, y is more than 1 and less than 3; RE is one or more than one of rare earth metals of La, Ce, Pr, Nd, cerium rich mish metal Mm and lanthanum rich mish metal M1; M is one or more than one of transition metals of Cu, Ni, Mn, Fe and Zn. The rare earth-magnesium-transition metal base hydrogen storage metal provided by the invention is also characterized in that the metal at least contains a multiphase structure of CeMg3 type LaMg3 phase and LaMg2Cu2 phase. The invention also provides a preparation method of the rare earth-magnesium-transition metal base hydrogen storage metal. The preparation method mainly includes that induction melting is adopted, Mg base master alloy is utilized to substitute magnesium and used as raw material, secondary charging is used for preparing the metal, and the metal is annealed. The hydrogen storage metal of the invention has the advantages that the hydrogen storage capacity at 200 DEG C is more than 3wt% and the metal can be used as solid-state hydrogen storage material.
Owner:YANSHAN UNIV

Method for preparing microorganism-dedicated soybean protein isolate

ActiveCN107312813AAppropriate degree of enzymatic hydrolysisAppropriate molecular weightPlant peptidesFermentationAlkaline proteaseNeutral protease
The invention discloses a method for preparing microorganism-dedicated soybean protein isolate. The method comprises the following steps: soaking low-temperature degreased soybean meal in an alkali solution with a pH value of 9.5 to 10.0 at a temperature of 50 to 55 DEG C, adjusting the pH value to 6.8 to 7.4, the sugar content to 8.0 to 9.0, stirring for 40 to 60min, and performing solid-liquid separation to obtain a crude protein extracting solution; adding an acid solution into the crude protein extracting solution at room temperature, stirring for 10 to 50min, and centrifuging to obtain acid-precipitated protein; dissolving the acid-precipitated protein in water at room temperature, adjusting the pH value to 6.00 to 6.30 and the sugar content to 18.0 to 19.5 to obtain an acid-precipitated protein solution; adding neutral protease and alkaline protease, reacting at 50 to 60 DEG C for 0.5 to 3h to obtain enzymatic hydrolysate; performing sterilization, flash treatment and spray drying to obtain the microorganism-dedicated soybean protein isolate. The soybean protein isolate prepared according to the invention has good dispersibility, low viscosity and suitable amino acid nitrogen, and has the advantages of simple process, easy operation, strong protein practicability, wide application in fermentation industry and better popularization value.
Owner:SHANDONG YUWANG ECOLOGY FOOD IND

Detection agent for determining content of nickel in water

The invention relates to a detection agent for determining the content of nickel in water. According to the detection agent, firstly, sodium citrate, potassium hydroxide and ethylenediamine tetraacetic acid disodium are weighed according to the mass ratio of 12: 6: 1, are mixed uniformly and are then ground so as to obtain powder I; then, ammonium citrate, potassium iodide, iodine and dimethyl glyoxime are weighed according to the mass ratio of 16: 2: 1: 1, are mixed uniformly and are then ground so as to obtain powder II; and finally, the powder I, the powder II and polyethylene glycol are weighed according to the mass ratio of 5: 1: 1 and are mixed uniformly, thereby obtaining the detection agent for determining the content of nickel in water. During use, 0.7g of the detection agent is poured into 10ml of a water sample to be determined, shaking is carried out for 1 min so as to dissolve the detection agent, and a colorimeter or spectrophotometer is utilized for measuring. According to the detection agent disclosed by the invention, the carrying is convenient, the storage is easy, any reagent is not required for being added during use, and the determination results are accurate, so that the detection agent is applicable to the on-site detection on the content of nickel in surface water, seawater and industrial wastewater.
Owner:TONGJI UNIV

CF/PEEK composite material with chemical bond strong interface and preparation method thereof

ActiveCN111440342AGuaranteed normal windingMake up or offset the lossPolymer scienceCarbon fibers
The invention relates to a CF/PEEK composite material with a chemical bond strong interface and a preparation method thereof. The method comprises the following steps: (1) carrying out high-temperature decomposition on an original sizing agent on the surface of CF; (2) simultaneously carrying out microwave radiation and ultraviolet irradiation on CF in a saturated water vapor environment, and marking a product as ACF; (3) immersing ACF into the aminated PEEK/dimethylformamide/carbon nanotube suspension, performing heating to enable aminated PEEK to react with ACF, taking out, and drying, so asto obtain sized modified carbon fiber MCF; and (4) laminating and hot-pressing the MCF and the PEEK material, the CF/PEEK composite material with the chemical bond strong interface is obtained. The bending strength of the finally prepared CF/PEEK composite material with the chemical bond strength interface is 900-1100 MPa, the bending modulus of the finally prepared CF/PEEK composite material is57-65 GPa, the interface shear strength of the finally prepared CF/PEEK composite material is 100-120 MPa, and the residual compression strength of the finally prepared CF/PEEK composite material after impact is 210-250 MPa. The method disclosed by the invention has the characteristics of high efficiency, environmental friendliness and capability of realizing large-scale production, and the prepared CF/PEEK composite material can replace metal to be applied to the fields of aerospace, medical treatment, machinery, automobiles, rail transit and the like.
Owner:DONGHUA UNIV

Flour production system

The invention relates to a flour production system. The flour production system comprises a grain storing silo, a first section material lifting machine, a wheat sorting screening machine, a second section material lifting machine, a wheat peeling device, a third section material lifting machine and a millstone flour mill, which are arranged in sequence. A discharging end of the grain storing silo is connected with an input end of the first section material lifting machine, an output end of the first section material lifting machine is connected with an input end of the wheat sorting screening machine, an output end of the wheat sorting screening machine is connected with an input end of the second section material lifting machine, an output end of the second section material lifting machine is connected with an input end of the wheat peeling device, an output end of the wheat peeling device is connected with an input end of the third section material lifting machine, and an output end of the third section material lifting machine is connected with an input end of the millstone flour mill. The flour production system is simple in structure and scientific and reasonable in design. According to the flour production system, the flour production process and the processing process are integrated together, the high integration of flour production is achieved, the time and the labor are saved, plenty of manpower and material power are saved, the working efficiency is improved, and the product quality level is improved.
Owner:LIXIN DONGHUA FLOUR

Acidifying agent as well as compound bacterium one-step fermentation preparation method and application thereof

The invention provides an acidifying agent as well as a compound bacterium one-step fermentation preparation method and application thereof. According to the compound bacterium one-step fermentation preparation method, fruit and vegetable wastes are used as fermentation raw materials and are subjected to one-step-method surface layer air-blowing fermentation through compound bacteria of saccharomycetes, lactic acid bacterium and acetobacter aceti to prepare the acidifying agent. According to the method provided by the invention, nutrient components in the fermentation raw material can be efficiently utilized, types and content of organic acids in a fermentation solution are effectively improved, the fermentation time is shortened, the pH (Potential of Hydrogen) value is reduced, a fermentation technology is simple and the cost is low. The acidifying agent prepared by the method has the advantages that the types of the organic acid are more and the content is moderate, the pH value is lower and the content of alcohol is relatively low; the acidifying agent can be directly used as a feed additive or is subjected to dreg removal and concentration to be used as the feed additive, and is mixed with feed to feed animals; the acidifying agent has good palatability and a high digestion rate; the feed intake and the daily weight gain of the animals are easy to improve and the diarrhea rate is reduced; the acidifying agent has a good application prospect.
Owner:SOUTH CHINA INST OF COLLABORATIVE INNOVATION

Amorphous-nanocrystalline soft magnetic material, preparation method and application thereof, amorphous strip, amorphous-nanocrystalline strip and amorphous-nanocrystalline magnetic sheet

ActiveCN110284082AImproved Amorphous Formation AbilityBalance strengthInductances/transformers/magnets manufactureMagnetic materialsCarbideNanocrystalline silicon
The invention provides an amorphous-nanocrystalline soft magnetic material, a preparation method and application thereof, an amorphous strip, an amorphous-nanocrystalline strip and an amorphous-nanocrystalline magnetic sheet. The soft magnetic material comprises an amorphous matrix phase, a nanocrystalline phase distributed in the amorphous matrix phase, and fine crystalline particle distributed in the amorphous matrix phase and the nanocrystalline phase, wherein the amorphous matrix phase comprises Fe, Si and B, the fine crystalline particle comprise metal carbide, and the soft magnetic material comprises Fe, Si, B, X and Cu, wherein X is Nb and/or V. the preparation method comprises the following steps of, 1), preparing the raw materials in the formula amount, and then preparing an amorphous alloy; and 2) carrying out two-stage crystallization on the amorphous alloy under a protective condition, and cooling the amorphous alloy to obtain the soft magnetic material. The soft magnetic material solves the technical problems that the saturation magnetic induction intensity is relatively low and the cost is relatively high in a Fe-Si-B-Nb-Cu alloy system in the prior art.
Owner:HENGDIAN GRP DMEGC MAGNETICS CO LTD

Twisted-type submerged-arc flux-cored wire with high efficiency and crack resistance and preparation method thereof

The invention discloses a twisted-type submerged-arc flux-cored wire with high efficiency and crack resistance and a preparation method thereof. The twisted-type submerged-arc flux-cored wire is formed by spirally twisting at least seven steel strips coated with flux-cored powder, wherein the flux-cored powder comprises the following components of, in percentage by mass, 0.08%-0.18% of carbon, 1.0%-2.0% of manganese, 0.3%-1.2% of silicon, less than or equal to 0.03% of phosphorus, less than or equal to 0.03% of sulfur, 5.0%-6.2% of chromium, 0.7%-1.5% of tungsten, 0.8%-1.6% of molybdenum, 0.1%-0.7% of vanadium, 0.02%-0.05% of niobium and the balance iron and inevitable impurity elements. The twisted-type submerged-arc flux-cored wire is formed by spirally twisting a plurality of thin flux-core monofilaments, can be made into thicker welding wires with good coiling performance and is convenient to transport, storage and welding, the current and the voltage required by welding is relatively small, a larger welding speed is achieved under the condition of the same welding standard, the hardness of the prepared surfacing layer is medium, the crack sensitivity is low, and the crack resistance is excellent.
Owner:江苏联捷焊业科技有限公司

Amorphous-nanocrystalline soft magnetic material and preparation method and application thereof, amorphous strip, amorphous-nanocrystalline strip and amorphous-nanocrystalline magnetic sheet

ActiveCN110257735AImproved Amorphous Formation AbilityBalance strengthTransformers/inductances detailsFurnace typesNanocrystalline siliconCarbide
The invention provides an amorphous-nanocrystalline soft magnetic material and a preparation method and application thereof, an amorphous strip, an amorphous-nanocrystalline strip and an amorphous-nanocrystalline magnetic sheet. The soft magnetic material comprises an amorphous substrate phase, nanocrystalline phases which are distributed in the amorphous substrate phase, and fine-grain particles which are distributed in the amorphous substrate phase and the nanocrystalline phases, wherein the amorphous substrate phase comprises Fe, Si and B; the fine-grain particles include metal carbide; and the soft magnetic material comprises Fe, Si, B, P and Cu. The preparation method comprises the following steps: 1) preparing the raw materials based on the dosage in a formula to obtain an amorphous alloy; and 2) performing two-stage crystallizing on the amorphous alloy under the protective condition; and cooling to obtain the soft magnetic material; and the crystallizing temperature in the second stage is beyond the crystallizing temperature in the first stage. According to the amorphous-nanocrystalline soft magnetic material and the preparation method thereof, the problems of high coercivity of a Fe-Si-B-P-Cu alloy system in the prior art and high technology difficulty can be solved.
Owner:HENGDIAN GRP DMEGC MAGNETICS CO LTD

Glass-fiber air filter paper containing carbon nanometer materials and preparing method thereof

The invention relates to glass-fiber air filter paper containing carbon nanometer materials and a preparing method thereof. The preparing method includes the following steps that 1, the carbon nanometer materials are added into an anion-dispersing-agent water solution, the mixture is subjected to ultrasonic dispersion, and carbon-nanometer-material dispersion liquid is prepared; 2, glass fiber materials are added into water, acid is added, the pH value is adjusted to 2.5 to 3.5, then the mixture is dispersed, then a stabilizer water solution is added, and glass-fiber-material dispersion liquid is prepared; 3, the carbon-nanometer-material dispersion liquid and the glass-fiber-material dispersion liquid are mixed to be even and fed to a forming device to be sucked, then forming wet paper is obtained, sizing and drying are carried out, and the glass-fiber air filter paper is obtained. The glass-fiber air filter paper containing the carbon nanometer materials prepared with the method is of a functional double-layer structure, and is applied to the field of air filter paper, air resistance is small, filter efficiency is high, powder falling is avoided, and the excellent antimicrobial performance is achieved.
Owner:KUNMING NATAI TECH CO LTD

Drinking water treatment technology adopting carbon fibers

The invention relates to the technical field of drinking water purification and particularly relates to a drinking water treatment technology adopting carbon fibers. According to the drinking water treatment technology, the problems of turbid water quality, abnormal water odor and off-odor can be effectively solved, and inorganic substances such as iron, manganese and the like in water are effectively purified; in addition, organic compounds and bacteria such as cyanogen, chlorine, fluorine, phenol and the like in a water body can be removed and the existing drinking water safety problems canbe effectively solved. The drinking water treatment technology comprises the following steps: firstly, adsorption treatment: effectively adsorbing and removing macromolecular substances in water by utilizing relatively large empty area and specific surface area of the carbon fibers; secondly, filtration treatment: carrying out further treatment on pollutants in the water body through the adsorption of ores in a filtration module; thirdly, bacteriostatic treatment: killing microorganisms in the water body and inhibiting regeneration of the microorganisms; fourthly, activation treatment: carrying out activation treatment on the water quality through the action of a gradient magnetic field.
Owner:北京太和洁源科技发展有限公司

Hot dipping zinc aluminum nickel bismuth rare earth alloy used for steel component hot dipping zinc and ingot case and method thereof

The invention relates to a zinc alloy used by steel structural component in zinc hot dip plating and the ingot shape and the method thereof. The alloy component and the weight per cent are of 0.008 per cent (wt) to 0.012 per cent (wt) Al, 0.04 per cent (wt) to 0.06 per cent (wt) Ni, 0.02 per cent (wt) to 0.08 per cent (wt) Bi, 0.006 per cent (wt) to 0.01 per cent (wt) RE, and zinc and impurity as the rest composition. The ingot shape is of T-shaped cuboid with two symmetrical ear curls; wherein, the bottom of the cuboid is a plane; the ear curls are provided with hoisting holes; the cuboid is of four included side planes, taking in a big top and small bottom shape. The zinc hot dip plating method is to melt the alloy directly into zinc bath; the application is simple; the zinc bath alloy elements Al, Bi, Ni and RE with stable and uniform content can alleviate or eliminate the Sandelin Effect generated by an active steel galvanization, perfect the wetting behavior and flow property of the iron matrix and the zinc bath, improve corrosion resistance performance and mechanical performance of the coating, reduce the thickness of the coating and lower the cost. With the appropriate shape as well as ingot weight, the zinc alloy ingot shape has the advantages of able to meet zinc adding requirement of the large capacity galvanization equipment, convenient hoisting and fork transport, small specific surface area, suitable for storage and multiple layers stacking tier, saving storing room, and stability as well as safety.
Owner:ZHUZHOU SMELTER GRP

Cosmetic sponge, process for producing elastic polyurethane object, and applicator for cosmetic preparation

Provided is a cosmetic sponge which is constituted of an elastic polyurethane object of a three-dimensional membranous structure, wherein the elastic polyurethane object has an ethanol permeation time in the range of 10-400 seconds, excluding 400 seconds, has cells so that in an area of 1.0 mm × 1.0 mm within the section thereof, there are 150 or more cells having a maximum diameter of 15-150 μm and 10 or less cells having a maximum diameter exceeding 10 μm and that the number of cells having a maximum diameter of 15-75 μm is 80% or more of the number of cells having a maximum diameter of 15-150 μm, and has an apparent density of 120-200 kg/m3. Even when the cosmetic sponge is used for applying a cosmetic preparation that is low in thixotropic property and viscosity, the cosmetic preparation is less apt to infiltrate deeply into the inner part of the sponge and is moderately absorbed thereinto, and the cosmetic preparation can be spread over a larger area. Also provided are: a process for producing the elastic polyurethane object by an aqueous coagulation method using particles of an inorganic salt that have a specific particle size distribution; and an applicator for cosmetic preparations which employs the cosmetic sponge.
Owner:FUSHIMI PHARMA +1
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