1065results about How to "Antioxidant is good" patented technology

The invention relates to an ultra-high temperature resistant ceramic-based composite and a preparation method, which adopts carbon or boron nitride fabric cloth as reinforcing phases, ceramic powders of high melting point or high-temperature resistant metal powders as the stuffing, and carbon/silicon carbide as the base. Through the blending and ball milling of the adhesives and the powder stuffing, the sizing agent thus acquired is coated on the reinforcing phase fabric cloth, and then overlapping, molding, cross-bonding, high-temperature pyrolysis, and repeated densification are carried out in preparing the composite. The ultra-high temperature resistant ceramic composite has the advantages of excellent thermal shock resistance, low density, and low ablating rate under ultra-high temperature.

The invention discloses a method for preparing porous silicon carbide ceramic, and relates to a method for preparing silicon carbide ceramic. The invention aims to solve the technical problems of low mechanical properties and low porosity of porous silicon carbide ceramic prepared through the existing method. The method comprises the following steps of 1, preparing pulp; 2, preparing a porous ceramic green body; 3, preparing a prefabricated body; 4, preparing carbon gel; 5, preparing a composite material of silicon carbide and the carbon gel; 6, preparing a composite material of porous silicon carbide and carbon aerogel; and 7, putting the composite material of the porous silicon carbide and the carbon aerogel and monatomic silicon powder into a sintering furnace to be sintered to obtain the porous silicon carbide ceramic. The porosity of the opening of the porous silicon carbide is 30-83 percent, the aperture size is 0.3-100m, and pore spaces can be uniformly distributed or directionally arranged. Through a three-point bending test, the bending strength of the finally prepared porous silicon carbide ceramic material with the porosity of 47.8 percent achieves 164.62 MPa.

The invention relates to an organic silicon modified epoxy resin coating and a preparation method thereof. The coating consists of a coating main agent A component and a curing agent B component, wherein a coating main agent consists of substrate resin, a pigment-filler, a solvent and an aid; the substrate resin is obtained by modifying epoxy resin E-20 by using a methyl phenyl organic silicon low polymer; the using amount of the substrate resin accounts for 50-55 percent of the weight of the coating main agent; the weight ratio of the methyl phenyl organic silicon low polymer to the epoxy resin E-20 is (11-20):(15-16); the curing agent is polyamide; and the weight ratio of the coating main agent to the curing agent is 100:(7-12). The method comprises the following steps of: undergoing a condensation copolymerization reaction on hydroxyl, amino and alkoxyl in organic silicon resin with hydroxyl in epoxy resin; and grafting organic silicon -Si-O-group into the epoxy resin to obtain the modified epoxy heat-resistant coating with high heat resistance, high corrosion resistance and high paint film property.

The invention relates to an aroniamelanocarpa fruit wine and a brewing method thereof. The fruit of aroniamelanocarpa is taken as raw material and is made into fruit juice, fruit wine microzyme is selected for use and put into the fruit juice according to the proportion being 5-10% of the weight of the fruit juice, and the aroniamelanocarpa fruit wine is brewed with the alcohol content of 5-13% (v/v) and the total sugar content of 4.0-80.0g/L. The brewing technique of the invention comprises preparing the fruit juice, inoculation and fermentation, aging and store maturity, purifying wine body as well as filtration and sterilization, and the most advanced fermenting and purifying technique can be adopted by the production. The product of the invention has unique flavor, slightly acerbic and fresh taste, mellow mouthfeel, pleasing aroma and wide applicable people. The fruit wine contains multiple nutritional functional components such as anthocyanin, flavone, polyphenol active substance, vitamins antioxidant, mineral composition, polyoses, organic acid and the like which are rich in the fruit of aroniamelanocarpa, and has good effects of oxidation resistance, ageing prevention, blood pressure regulation, vessel relaxing, blood-fat reduction, anti-inflammation and detoxification, radiation resistance, etc.

The invention provides an epigallo-catechin gallate (EGCG) with high purity and a preparation method thereof. The EGCG content is 98.0 percent to 99.9 percent. The preparation method mainly comprisesthe working procedures of extracting, separating by a chromatography and crystallizing. The invention has favorable reproducibility of preparation process, high acquired EGCG content, low cost and stable and controllable quality and is suitable for industrialized production.

The invention relates to a preparation method of a Cf-ZrB2/ZrC/SiC composite material, belonging to the technical field of special ceramics. The method comprises the following steps of: (1) putting a carbon fiber prefabricated body in a chemical vapor deposition furnace, and preparing a pyrolytic carbon interface layer on the surface of the carbon fiber by a chemical vapor deposition technology; (2) pressure impregnation: completely immersing the carbon fiber prefabricated body into a precursor solution, discharging gas out of the prefabricated body to be vacuum, immersing the precursor in the prefabricated body by use of high pressure, and finally performing vacuum drying and cross-linking curing; (3) high-temperature cracking: putting the impregnated and cured carbon fiber prefabricated body in a high-temperature cracking furnace, quickly heating to 1,400+/-10 DEG C under the protection of inert atmosphere, and preserving heat for 0.5-2 hours; and (4) densifying treatment: repeating the impregnation cracking process for the carbon fiber prefabricated body after being cracked at a high temperature, until the material density at least reaches 2.0g/cm<3>. The method provided by the invention has the advantages of short period, strong adaptability and excellent material performance.

The invention discloses a vacuum induction furnace capable of smelting aluminum and aluminum alloy. The vacuum induction furnace comprises a furnace body erected at the top of a furnace frame, a liftable furnace bottom plate arranged at the bottom end of the furnace body and bearing a graphite crucible, an induction coil arranged in the furnace body, an air suction pipe arranged on the side wall of the furnace body, a charging pipe penetrating through a furnace cover, a stirring shaft penetrating through the furnace cover, a stirring frame arranged at the bottom of the stirring shaft, a through hole formed in the stirring shaft, an argon blowing pipe penetrating through the through hole and extending to the bottom of an inner cavity of the graphite crucible, an argon supply device connected with the argon blowing pipe, a trolley arranged under the furnace body and capable of bearing the furnace bottom plate, and a lifting driving mechanism used for driving the furnace bottom plate to rise and fall vertically. The graphite crucible of the vacuum induction furnace is borne by the liftable furnace bottom plate, thereby entering and going out of the furnace body conveniently. The furnace bottom plate and the graphite crucible can be transported by the trolley, and moving is convenient. The stirring mechanism can conduct stirring during smelting of the aluminum and the aluminum alloy, argon can be led into aluminum liquid during stirring, and a purification effect can be achieved.

The invention relates to mineral fiber-modified flexible rubber concrete. The mineral fiber-modified flexible rubber concrete comprises rubber cement concrete, chopped basalt fiber and a dispersant methylcellulose, wherein the rubber cement concrete consists of rubber particles, cement, sand, stones, a water reducing agent and water; and the chopped basalt fiber is 0.1 to 0.5 percent of the volume of the rubber cement concrete, and the dispersant is 0.05 to 0.2 percent of the weight of the water. The concrete is applicable to road engineering, and has high compressive strength, bending tensile strength and deformability, and low modulus of elasticity.

The invention relates to the field of lithium ion battery materials, and in particular relates to an adhesive and a lithium ion battery with the same. The adhesive is a polymer containing structure units shown as the formulas I, II, III and IV, and the number-average molecular mass of the adhesive is 0.5 million to 1.2 million. The invention also relates to the lithium ion battery, comprising a positive electrode piece, a negative electrode piece, a separator and electrolyte, wherein the positive electrode piece comprises the adhesive. With the adhesive, the flexibility of the positive electrode piece can be improved greatly, so that the problems of processing, battery performance and the like, caused by crisp electrode pieces, can be avoided, the compaction density can be enhanced, and the energy density of the battery can be further improved.

The invention relates to self-service areca nut brine. The brine contains lotus leaf products and/or lotus leaf extracts and/or chitosan and derivatives thereof, wherein nuciferine and/or lotus leaf flavones in the lotus leaf extracts have obvious functions of weight losing, fat reducing, bacteria suppressing, virus resisting, detoxifying and oxidation resisting; and the chitosan and derivatives thereof have the functions of controlling cholesterol, suppressing bacteria, preventing and controlling hypertension and adsorbing and discharging heavy metals. The brine has the beneficial effects that not only is the variety of the areca nut brine expanded, but also the special functions of the areca nut brine are added; as the areca nut brine is independently packaged and is isolated from the areca nut semi-finished products, the areca nut product can not suffer from scumming, thus making up for the defects of the existing areca nut products and the deficiency of the brine preparation technology; and consumers can voluntarily select the variety and intake of the brine.

The invention discloses an Al2O3/Ti(C,N) nano-composite metal ceramic die material. The Al2O3/Ti(C,N) nano-composite metal ceramic die material is characterized by being formed by performing hot-pressed sintering by taking nano-Al2O3 as a matrix, taking nano-Ti(C,N) as a hard dispersed phase, taking micron metals Mo, Ni and Cr as binding phases, and adding one or two of oxides Y2O3 and TiO2, and two or more of carbides TaC, NbC and VC as sintering aids. Compared with a die taking die steel or hard alloy as a material, the metal ceramic die material disclosed by the invention is more excellent in wear resistance, antioxidation and thermal shock resistance, and good in strength and toughness, as well as also has an application prospect in the aspects of tools and wear-resistant and corrosion-resistant components besides production for dies.

The invention relates to the technical field of skin care products, in particular to eye essence containing a lactobacillus fermented lysate product and a preparation method of the essence. The eye essence comprises, by weight, the lactobacillus fermented lysate product, a tea extract, a pomegranate peel extract, caffeine, royal jelly polypeptide, oat beta-glucan, a buckwheat seed extract, ceramide, an emulsifier and a solvent. The eye essence is mild and safe and is easily coated and absorbed, the tea extract, the pomegranate peel extract and the caffeine are used as a main anti-aging and antioxidation frame of the eye essence, the energy of the skin cells is improved in combination with the lactobacillus fermented lysate product, and the absorption capacity of the skin is improved; meanwhile, royal jelly polypeptide, oat beta-glucan, the buckwheat seed extract and ceramide are used a nutrient frame, the nutrients and moisture are supplemented for the eye skin in time, and the effectsof the eye essence on anti-aging, wrinkle removal, antioxidation and nutrient supplement are achieved.

The lubricating oil additive composition consists of: A. at least one of ash-less high molecular weight polyisobutylene butanimide dispersant with number average molecular weight of 1500-4000 in 25-50 wt%; B. at least one of borated polyisobutylene butanimide dispersant with boron content of 0.05-4.0 wt% in 3-18 wt%; C. at least one of polyisobutylene butanimide dispersant coupled with phenol in 2-18 wt%; D. at least one of metal detergent in 25-45 wt%; and E. at least one of antioxidant anticorrosive additive in 3-18 wt%. The composition has excellent soot dispersing performance, endows oil product with excellent antioxidant and anticorrosive performance, and is added into type-I and type-II base oil or synthetic base oil with high viscosity index to compound CF-4 or higher diesel engine oil.

The invention discloses a preparation method of a walnut polypeptide beverage. The preparation method of the walnut polypeptide beverage comprises the following steps: step one, removing red peels of walnut kernels; step two, rinsing the walnut kernels with the removal of the red peels by using water, carrying out vacuum freeze-drying and then squeezing to obtain walnut oil and walnut meal; step three, crushing the walnut meal into walnut protein meal, and softening; step four, pulping to obtain walnut protein raw liquid, separating pulp and residues, and homogenizing to obtain walnut protein liquid; step five, adding alkaline protease into the walnut protein liquid for carrying out enzymolysis; step six, carrying out enzyme deactivation to obtain a walnut polypeptide solution; and step seven, adding auxiliary materials into the walnut polypeptide solution, adding water for making up to the volume and then homogenizing to obtain the walnut polypeptide beverage. The content of small molecule peptide with the molecular weight being less than 2000Da in the walnut polypeptide beverage prepared by adopting the method reaches over 95%; the walnut polypeptide beverage prepared by adopting the method is low in peptide molecular weight, very high in content of peptide components, good in product taste, suitable for being eaten by large groups of people, good in product stability, very good in oxidation resistance and fatigue resistance, and is capable of reducing blood pressure and improving the immune function and the absorption function of a human body.

The invention aims at providing an electric contact material Ti3SiC2 and a preparation method used for the electric contact material Ti3SiC2, wherein, the electric contact material Ti3SiC2 is provided with a multi-layer composite structure with self-lubrication performance and has the advantages of high-strength, high conductivity, high thermal conductivity, melt welding resistance and electric arc burning resistance. The electric contact material Ti3SiC2 with the multi-layer composite structure is composed of four layers as follows: the first layer (surface layer) is Ti3SiC2 of 3 to 1000 microns thick, the second layer (auxiliary layer) is a silver-based alloy of 1 to 500 microns thick, the third layer (substrate) is a copper-based alloy and the fourth layer (welding layer) is solder of 0.03 to 0.10mm thick. The invention discloses the electric contact material Ti3SiC2 with the multi-layer composite structure, which adopts reasonable configuration of multi-layers of the Ti3SiC2/ silver-based alloy /copper based alloy/ solder, takes the TiSiC2 layer as the surface layer, and has the excellent characteristics such as high strength, good conductivity, good thermal conductivity, good melt welding resistance, good electric arc burning resistance, good corrosion resistance, good thermal-vibration resistance, good oxidation resistance and particularly good high-temperature oxidation resistance, etc.

The invention discloses a glass heating graphite mold and a production method thereof. The mold comprises a front mold and a rear mold, wherein the front mold comprises a front mold base and a front mold core made of a graphite material; the rear mold comprises a rear mold base and a rear mold core made of the graphite material; a cavity matched with the front mold core is formed in the front mold base; the front mold core is arranged in the cavity of the front mold base; a cavity matched with the rear mold core is formed in the rear mold base; the rear mold core is arranged in the cavity of the rear mold base; intermediate areas of opposite surfaces of the front mold core and the rear mold core are three dimensional curved surfaces suitable for processing to obtain hot bending glass during mold closing; edge areas of the opposite surfaces of the front mold core and the rear mold core are respectively provided with a plurality of supporting insert via holes; supporting inserts are arranged in the supporting insert via holes; when the mold is closed, the supporting inserts, which are oppositely arranged, on the front mold core and the rear mold core, make contact with one another, so that the effects of positioning and supporting the mold cores are realized, and the pressures of the mold cores are borne. According to the glass heating graphite mold disclosed by the invention, large-scale mass production is easily realized while the molding quality of the graphite mold is improved.

The invention relates to a new type 2, 3, 5, 4'- tetra-hydroxyl diphenyl ethylene-2-O-beta-D-glucoside crystal, a method for making same, and pharmaceutical compositions containing the crystal. The content of the crystal is 90-99. 9tested by high performance liquid chromatography, and the stilbene glucoside crystal of high-purity is obtained by abstracting fleece-flower root, extracting with an organic solvent, separating by column chromatography and crystallizing in appropriate dissolvent. The preparing process provides high yield, low cost, and is suitable for industrial production.

The invention discloses a biological fresh-keeping agent for hairtail. The biological fresh-keeping agent contains the following components in parts by weight: 5-8 parts of tea polyphenol, 2-4 parts of allicin, 3-5 parts of chitosan, 3-5 parts of vitamin E, 0.4-0.5 part of vegetable acid, 2-4 parts of bioenzyme, 2-4 parts of an active peptide ferrous chelate and 100-120 parts of distilled water. Active peptide is prepared through fermentation of actinomycetes and is purified through centrifugation and ammonium sulfate precipitation, and then the active peptide ferrous chelate is prepared. The biological fresh-keeping agent has the beneficial effects that the biological fresh-keeping agent has excellent effects of killing bacteria, resisting oxidation, inhibiting enzymatic activity and the like, the fresh-keeping limit of the hairtail can be prolonged from several days to 40-60 days, so that the fresh-keeping agent is very good; and by utilizing the active peptide ferrous chelate capable of scavenging free radicals, the fresh-keeping agent has extremely strong oxidation resistance, so that the biological fresh-keeping agent is safe, non-toxic and efficient, the original quality of the hairtail is well maintained, and the shelf life of the hairtail can be remarkably prolonged.

The invention discloses a preparation method of silk fibroin oligopeptide for skin-care products. The preparation method comprises the following steps: (1) degumming: steeping silkworm cocoons with 0.5-0.8% Na2CO3, rinsing and drying; (2) salt removing: dissolving in boiling water through 50-60% of CaCl2, cooling and then centrifuging, and dialyzing supernatant to obtain a small-molecular silk fibroin solution; (3) double-enzymolysis: performing double-enzymolysis with alkaline protease and actinozyme, centrifuging, and dialyzing supernatant to obtain low-molecular-weight silk fibroin solution; (4) membrane separation: separating with sephadex gel chromatographic column Sephadex G-15, and collecting components to obtain a silk fibroin oligopeptide solution; and (5) drying and storage: performing ultralow-temperature freeze drying on the silk fibroin oligopeptide solution to obtain silk fibroin oligopeptide powder. The preparation method of the silk fibroin oligopeptide is simple and convenient to operate, with extraction rate of more than 93%, and is applicable to addition of raw materials into skin-care products and cosmetics.

The invention provides a whisker reinforced copper-based electrical contact material. The material comprises electrolytic copper powder, copper alloy powder and silicon carbide whiskers or tetra-needle like zinc oxide whiskers, wherein the copper alloy powder contains one or any composition of aluminium, zirconium, tellurium, silver, titanium, boron and rare-earth elements. A preparation method of the material comprises the following steps: proportionally mixing the whiskers with the electrolytic copper powder and copper alloy powder and ball-milling the mixture on a high energy ball mill under the protective atmosphere of argon to obtain uniform mixed powder; carrying out cold isostatic pressing on the obtained mixed powder to obtain a cylindrical blank; sintering the cylindrical blank under the protective atmosphere of argon; repressing the sintered blank; resintering the repressed blank under the protective atmosphere of argon; carrying out hot extrusion on the resintered blank to form a plate; carrying out aging treatment on the plate under the protective atmosphere of argon; and rolling or drawing the section subjected to aging treatment and then blanking the section according to the product size. The electrical contact material has the advantages of good electrical conductivity, thermal conductivity, fusion welding resistance, arc ablation resistance and corrosion resistance and especially good high-temperature oxidation resistance.

The invention discloses a preparation method of a short carbon fiber based electromagnetic shielding composite material. The preparation method comprises steps as follows: (1), short ES fibers and short carbon fibers in a certain proportion are put in a dispersion liquid sequentially according to required fibrofelt surface density and are dispersed and mixed, and a mixture is stirred by a stirrer and then left to stand; (2), a dispersed solution is poured into a paper machine and subjected to papermaking by a copper wire mesh on the paper machine, and then a short carbon fiber shielding felt layer obtained through papermaking is dried; (3), the dried short carbon fiber shielding felt layer is clamped between two insulating resin layers and subjected to hot pressing in a plate vulcanizing machine, and the short carbon fiber based electromagnetic shielding composite material is obtained. The invention further discloses the short carbon fiber based electromagnetic shielding composite material. The short carbon fiber based electromagnetic shielding composite material has the characteristics of adjustable shielding performance, ultrathin property, light weight and the like and has excellent anti-oxidation and anti-corrosion properties, the preparation method is simple and easy, the cost is low, the application is wide, and large-scale production is facilitated.

Disclosed exterior-wall latex paint is prepared from the following raw materials in parts by weight: 40-80 parts of distilled water, 15-35 parts of white latex, 9-15 parts of heavy calcium carbonate, 10-15 parts of starch, 3-6 parts of silicon carbide, 4-8 parts of ultrafine silicon dioxide, 6-12 parts of borax, 20-40 parts of vinyl acetate, 5-10 parts of a nanometer air purifying material, 2-6 parts of sodium dodecyl sulfate, 9-18 parts of talcum powder, 8-16 parts of light calcium, 7-11 parts of water-washed kaolin, 4-8 parts of alumina silicate, 3-7 parts of acrylic acid, 10-20 parts of anatase titanium dioxide and 11-21 parts of organosilicon charged emulsion. The provided exterior-wall latex paint is small in environmental pollution, high in caking capability, low in cost, energy-saving, environment-friendly, and excellent in oxidation resistance, wear resistance and solarization resistance.

The invention discloses a method for dyeing silk by using laccase-catalyzed tea polyphenols, and belongs to the field of textile dyeing. Tea polyphenols, laccase and a pH buffer are taken as a dye solution. The method comprises the following steps of: dissolving the tea polyphenols in water, regulating the pH of a dye bath by using an acetate buffer until the dye bath is weakly acidic, adding the laccase, performing polymerization reaction on the tea polyphenols under the catalytic action of the laccase, and dyeing a silk fabric. The method for dyeing the silk by using the laccase-catalyzed tea polyphenols is simple and practicable, is mild in dyeing condition and has the advantages of environment friendliness and low probability of scratch defects.

The invention discloses moisturizing lotion for repairing skin barriers and resisting free radicals. The moisturizing lotion comprises, in weight percent, 2%-6% of polyhydric alcohols, 0.2%-3% of thickening suspending agents, 1%-5% of natural squalane, 2.5%-4.5% of emulsifying agents, 0.1%-3% of ceramide NP, 0.1%-5% of nicotinamide, 0.1%-2% of lycopene, 0.5%-3% of grape seed extracts, 0.1%-1% of ferulic acid, 0.1%-2% of coenzyme Q10, 0.1%-2% of vitamin E and the balance water. By the aid of the proportion and combination of different components, a novel local treatment formula can be developedaccording to skin lesion relevant to a plurality of cuticles and skin damage and resistance of the free radicals. The components in the formula are necessary components forming skin permeability barriers and have synergistic interaction between antioxidant components, the skin barriers can be repaired, protection films are formed on the surfaces of skins, the moisturizing lotion resists oxidationand the free radicals, damage of external factors to the skins is avoided, transepidermal water loss rate is effectively reduced, and the moisturizing lotion has good moisturizing effects on the skins.