389results about How to "Improve antioxidant capacity" patented technology

The present invention provides a thioether bond structure-containing hindered phenol antioxidant and a preparation method thereof, wherein screen phenol, thiol ester and formaldehyde in a reaction medium are subjected to a reaction under a certain condition in the presence of a catalyst to obtain a thioether bond-containing hindered phenol antioxidant compound, wherein the compound has an excellent antioxidation performance in hydrogenation base oil, and can be adopted as a lubricating agent antioxidant to be separately used or is compounded with other additives to be used, and the antioxidant is applicable for internal combustion engine oils and industrial lubricating oils.

The invention relates to an environment-friendly soldering flux for low temperature lead-free soldering paste for soft soldering; the soldering paste is characterized by comprising the ingredients of weight percentages as follows: 30-50% of rosin or modified rosin and synthetic resin; 30-40% of high boiling solvent; 3-10% of activating agent; 1-10% of rheological agent; and 0.1-3% of stabilizing agent. The low temperature lead-free soldering paste prepared by the soldering flux invented is featured with good high temperature oxidation resistance, long printing time, strong welding wettability and proper viscosity of soldering paste, which is in particular applied to the through hole plugged reflow soldering in high frequency processing procedure, also to the SMT surface mount reflow soldering.

The invention discloses a reactive polyurethane hot melt adhesive for a reflective fabric. The reactive polyurethane hot melt adhesive is prepared from polyester polyol, polyether polyol, a chain extender, high polymer polyester, an adhesion promoter, an anti-oxidant, an ultraviolet ray absorber, a stabilizing agent, isocyanate, a catalyst and a silane coupling agent. The invention also discloses a preparation method for the reactive polyurethane hot melt adhesive used for the reflective fabric. The reactive polyurethane hot melt adhesive for the reflective fabric has high initial-stage strength, good soft handle, good washing performance, solvent resistance, heat resistance, storage stability and excellent environmental protection performance and is applicable to bonding of a variety of materials including a reflective material.

The invention discloses a quantum dot-embedded silicon dioxide composite material, which consists of 60 to 100 weight parts of porous silicon dioxide, 0.01 to 20 weight parts of semiconductor quantum dots embedded on the surface of the porous silicon dioxide and 1 to 15 weight parts of surfactant. The quantum dot-embedded porous silicon dioxide composite material is mainly applied to the fields such as light conversion films, light-emitting diode (LED) packaging and concealed print; the prepared light conversion films have high light transmittance, high-temperature resistance, wear resistance and the like, and have high light transmittance, luminescent properties and oxidation resistance when used for LED packaging.

The invention discloses a preparation method of a ginkgo leaf biological feed additive. The preparation method comprises the following steps: with the ginkgo leaf as a main solid state fermentation substrate and probiotic bacillus as a strain, performing solid state fermentation under suitable nutrient conditions and culture conditions; and drying and crushing to obtain the biological feed additive. The biological feed additive contains a variety of bioactive substances such as flavonoid compounds and terpene lactone and can improve the immunity and the antioxidant capacity of an animal body; through biological fermentation, the probiotic bacilli are rich in the biological feed additive, so that the biological feed additive can adjust the intestinal flora balance of the animal, improve the intestinal microecological environment, promote the animal growth, reduce the intestinal diseases of the animal, and improve the disease resistance of the animal body; and the biological feed additive can significantly improve the productivity of livestock and poultry, and can substitute or partially substitute antibiotics, thus providing a health guarantee for consumption and use of livestock and poultry food.

The invention discloses a micro-alloying tin-zinc eutectic alloy tinless solder that the main constituent is Sn-Zn eutectic alloy, Zn is 8-10wt% and the rest is Sn, adding one or the complex from Ga, P, Al, Ge, and Mg, the content of single alloy element is below 0.1%. The invention extremely maintains the feature of Sn-Zn eutectic alloy, and has the advantages of strong oxidation resistance, simple constituents, easy to recycle, etc.

The invention relates to a phenolic resin resin modified for refractories and a preparation method thereof. The technical scheme applied by the invention is that a sol-gel precursor of ferric, cobalt, or nickel metal oxide prepared by a sol-gel method are added into a dehydrated alcohol diluted phenolic resin, and the quantity of the sol-gel precursor of ferric, cobalt, or nickel metal oxide is 1-5 % by weight of the dehydrated alcohol diluted phenolic resin; the solution is stirred for 3-10 hours at the temperature of 40-85 DEG C, and then is put into a evaporator where the compound reacts for 5-10 hours at pressure of 0.08-0.09 MPa and temperature of 40-85 DEG C. Firstly, the phenolic resin modified for refractories prepared by the invention can transform the resin char from amorphous glassy carbon into crystalline graphitic carbon in-situ synthesizing a carbon nanotube in the refractories; secondly, availability of the carbon nanotube also can improve the carbon yield ratio of phenolic resin, thus improving the inoxidability, thermal shock resistance and mechanical strength for the refractories.

The invention discloses a group of novel and functionalized arylene polymers that comprise repeat units from a group consisting of polyarylene, polybenzimidazolene, polybenzimidazole, and poly(arylene-co-cyclohexadiene). The compositions are created via Diels-Alder polymerization and result in a polymer that is chemically and thermally stable. The polyarylene polymers can be used to create improved polymer electrolyte membranes that overcome the limitations of Nafion® membranes for use in fuel cells.

The invention discloses an anti-oxidant composition for improving animal immune function and a preparation method thereof, belonging to the field of feed additive. The composition comprises the following ingredients: 2.0-18.0 wt% of vitamin E, 5.0-30.0 wt% of vitamin C, 2.0-40.0 wt% of thioctic acid, 1.0-25.0 wt% of antioxidants, and the balance consisting of corncob powder, wherein, the antioxidants are mixtures of one or more of daidzein, astragalus polysaccharides and tea polyphenol. According to basic theory of free radical biology, various antioxidants are used to form an antioxidant network, because of the synergism among the antioxidants, the oxidation resistance of the animal that takes the composition is enhanced greatly, so that the immune tissue and organs of the organism are protected, and the animal immune function is improved.

The present invention provides a preparation method of low-carbon Al2O3-Alumine base beta-sialon slide board brick. Said method uses corundum, alumine base beta-Sialon, active aluminum oxide, graphite or carbon black and antioxidant as raw material, uses resin as binding agent and adopts the following steps: machine-pressing and forming, firing at 1300-1600 deg.C under the condition of reduction atmosphere, oil-soaking, dry distillation, drilling hole, hooping, grinding and coating surface so as to obtain the invented slide board brick. Said invention is applicable to produce special steel, in particular produce steel.

The invention discloses a method for preparing a silicon carbide/molybdenum disiticide composite coating on the surface of a carbon material. The method comprises: A, uniformly mixing one or more of MoO3, ammonium molybdate, ammonium heptamolybdate, ammonium dimolybdate and ammonium tetramolybdate with one or more of alkali chlorides, wherein the mass percent ratio of the contained Mo atom to the mixed salt is 10-40%; B, embedding a carbon/carbon composite material or graphite in the mixed salt of the step A, placing in an sealed crucible, keeping warm at a temperature of 800-1100 DEG C for 0.5-5 h, cooling along with the crucible to room temperature; C, uniformly mixing one or more of Si powder, NaF and alkali chlorides; and D, embedding the carbon material obtained from the step B in the mixed salt bleed of the step C, keeping warm at a temperature of 900-1100 DEG C for 0.5-4 h, and cooling along with the crucible to room temperature. The method helps to make the material have good high-temperature antioxidation performance and mechanical properties.

The invention relates to mesophase pitch and a preparation method thereof. The mesophase pitch contains 5 to 13 mass percent of Al2O3, SiO2, B2O3, and ZrO2 impurities which have oxidation resistance. The preparation method comprises the following steps of: catalyzing polycyclic aromatic hydrocarbon by using a friedel-crafts alkylation catalyst to perform polycondensation on medium-temperature coal pitch or coal tar which is used as a raw material, wherein the friedel-crafts alkylation catalyst is any one or more of anhydrous AlCl3, ZrCl4, SiCl4, and BCl3; after polycondensation, adding water to perform hydrolysis; and performing pyrocondensation polymerization to covert pitch subjected to polycondensation into the mesophase pitch. The mesophase pitch contains antioxidants, and the prepared carbon material has excellent oxidation resistance.

The invention provides a water sprinkling anti-stress agent for aquaculture, and belongs to the technical field of aquaculture. The invention solves the problem that culture efficiency and production benefits can not be improved because of the stress responses generated by cultured objects during current aquaculture process. The water sprinkling anti-stress agent for aquaculture is prepared by well mixing the following components at normal temperature on a weight basis: 72-85 parts of glucose; 0.5-4 parts of sulfur-containing amino acids; 5-18 parts of vitamins; 0.5-2.5 parts of chlorogenic acid; 0.5-2.5 parts of baicalin; and 2-6 parts of citric acid. The anti-stress agent can rapidly recover the normal physiological functions and the immunologic functions of aquaculture animals, improve the antioxidation and the high-temperature resistant capability of aquaculture animals, and increase the survival rate and the disease resistant rate of aquaculture animals.

The invention discloses biological fermented bran and a production method, which belong to the technical field of biological fermentation. Wheat bran is used as a raw material, lactobacillus liquid is added, the material-liquid ratio is regulated to be 1:0.5 to 1:1.5, the mixture is fermented at the temperature of 25 to 50 DEG C for 2 to 3 days, and the fermented mixture is dried and pulverized to obtain the solid fermented bran. By adopting the solid fermentation, the process is simple, and the cost is low. The final product, fermented bran, is golden yellow, and is rich in lactic acid, probiotics and small peptide and thick in fragrance, the antioxidant capacity of the fermented bran is greatly improved compared with that of the raw material, no phytic acid or main mycotoxin can be detected after the fermentation, and the biological fermented bran is safe animal feed which can promote the ingestion of animals and improve the animal immunity and is easily digested.

The invention provides a heat-proof oxidation resistance nitrogen-containing anisotropic rare earth permanent magnet alloy powder and a method for making same, pertaining to magnetic material preparation techniques, which is characterized in: disposing the high performance anisotropic powder formed by treating the rare earth alloy raw material with hydrogenation-dismutation-dehydrogenation-regrouping (HDDR) technique into nitrogen-containing atmosphere to be nitridized, then crushing it to produce powder with a proper granule size, which is the invented nitrogen-containing anisotropic rare earth permanent magnet alloy powder with good thermostability, excellent antioxidant ability, good magnetic property and excellent combination property. Anisotropic bonded permanent magnets made of the invented magnetic powder have characteristics of excellent antioxidant ability, high service temperature and excellent magnetic property.

The invention relates to the technical field of food additives, and particularly relates to a compound antioxidant for frying oil. The compound antioxidant for frying oil comprises the following components in percentage by mass: 10%-20% of an antioxidant, 67%-81% of edible oil, 0.2%-1% of one or two of polydimethylsiloxane and polydimethylsiloxane emissions and 7%-12% of edible alcohol, wherein the antioxidant comprises one or more of tert-butylhydroquinone, ascorbyl palmitate, tea polyphenol and phospholipid. Compared with a traditional single antioxidant, the compound antioxidant is applied to the frying oil, so that the antioxidant capability of the frying oil is improved by over four times; the content of trans-fatty acids in the frying oil after the same treatment is reduced by over 50%; the service life of the frying oil is prolonged; and the storage period of the fried food is further prolonged. The invention also relates to a preparation method of the compound antioxidant for the frying oil.

The invention discloses a preparation method for a phase-separation induced porous super-hydrophobic coating material. According to the method, by adopting hexafluorobutyl methacrylate (G02) and ethylene glycol dimethacrylate (EDMA) as polymeric monomers, 1,4-butanediol (BDO) and N-methyl-2-pyrrolidone (NMP) as co-porogens and azodiisobutyronitrile (AIBN) as an initiator, in-situ thermal initiation free radical polymerization is carried out on a glass substrate; phase separation induced by the porogens in the polymerization process is used to construct a micro/nano binary coarse structure on coating surface or bulk phase; and the microstructure of a coating is adjusted by changing the composition of a reaction mixture, thereby preparing the porous polymer coating with the super-hydrophobic property. The method does not need any technological operations such as coating decoration; the preparation process is simple; the cost is low; and the prepared super-hydrophobic coating can be widely applied to the fields of self-cleaning, oil-water separation, fluid drag reduction, metal corrosion prevention and the like.

The invention provides a modified silver nanowire transparent conductive film and a method for improving the conductivity and oxidation resistance of the silver nanowire transparent conductive film, and relates to the technical field of flexible transparent conductive films. A modified silver nanowire transparent conductive film is prepared by the following method for improving the conductivity and oxidation resistance of the silver nanowire transparent conductive film: using ethanol-water as a mixed solvent of NaBH4 solution to the silver nanowire transparent conduction The first surface treatment is carried out on the film; the second surface treatment is carried out by contacting the silver nanowire transparent conductive film which has undergone the first surface treatment with a solution of n-alkylthiol. This method can effectively reduce the contact resistance between NW-NW and enhance the oxidation resistance of silver nanowires in air. The modified silver nanowire transparent conductive film has high light transmittance, good electrical conductivity, strong oxidation resistance and bending ability, and has good application prospects.

The invention discloses a porous ceramic heating element used for an electronic cigarette and a preparation method of the porous ceramic heating element. Electrodes are welded on the two ends of a porous ceramic matrix to obtain the porous ceramic heating element used for the electronic cigarette. The porous ceramic matrix is mainly prepared by preparing silicon carbide, alumina, silicon dioxide,molybdenum disilicide, magnesium oxide and a pore-forming agent in a certain proportion, then forming, sintering and other processes. The electrodes are formed by a metallized layer process. The porous ceramic heating element has a simple process and a stable structure and has no need for burying heating wires. The porous ceramic heating element can generate heat by itself, is uniform in heating and high in thermal conductivity, tobacco tar adsorbed in gaps can be heated evenly, and thus the heating uniformity, the heating efficiency and the taste of the electronic cigarette are all effectively improved.

The invention relates to organic complex composite phenolic resin of nickel and a preparation method of the organic complex composite phenolic resin. According to the technical scheme, the preparation method comprises the following steps of: adding an organic complex of the nickel into phenolic resin diluted by absolute ethanol, wherein according to the addition amount, a mass ratio of a nickel element in the organic complex of the nickel to the nickel in phenolic resin diluted by the absolute ethanol is (0.001-0.05):1; stirring at the temperature of between 20 and 60 DEG C for 1 to 6 hours; and putting into an evaporator, and distilling at the temperature of between 30 and 60 DEG C under the pressure of between 0.08 and 0.09 MPa for 0.5 to 4 hours to obtain the organic complex composite phenolic resin of the nickel. Compared with simple substance or compound composite phenolic resin of other transition metal elements and a preparation method, the invention has the advantages that theproduction cost is low; and the organic complex composite phenolic resin of the nickel is high in dispersity, residual carbon rate and oxidation resistance. The prepared organic complex composite phenolic resin of the nickel is used as a bonding agent to prepare a carbon composite refractory, so that the breaking strength at normal temperature is improved obviously.

The invention discloses restorative burn and scald cream and a preparation method thereof. The restorative burn and scald cream contains distilled water and essence. Compared with the prior art, the restorative burn and scald cream has the advantage of being light pink, uniform and exquisite, high in extensibility and antibacterial and antiphlogistic, has good effect on healing wounds and preventing and fading scars, is drug effective in treating burn and scald, has various effects of beautifying and nourishing skin and does not contain irritant ingredients like poppy shell, and infants and people having sensitive skin can feel assured to use the restorative burn and scald cream.

The invention relates to the field of regeneration of waste road engineering materials and in particular relates to an anti-aging waste road asphalt regenerator taking aromatic-enriched components asmain raw materials. The anti-aging waste road asphalt regenerator comprises 80-95 parts of aromatic components, 4-18 parts of a plasticizer, 2-6% of an anti-aging agent and 5-10 parts of a modifier, wherein the anti-aging agent is one or a combination of several of talc, pyrophyllite, kaolin, black mica and white mica. The modifier is one or two of sodium carbonate and sodium fluoride. The aromatic-enriched component is one or a combination of several of furfural extract oil, aromatic oil, rubber oil, naphthene extract oil, intermediate base extract oil and intermediate base-naphthenic base extract oil. The plasticizer is one or a combination of several of phthalate, polyethylene terephthalate, benzene polycarboxylic acid esters and benzoate. Secondary aging of the reclaimed asphalt mixture can be effectively retarded, so that the problem that the conventional road asphalt regenerator is poor in secondary aging resistance is solved.

The invention discloses an ultraviolet-cured transparent halogen-free flame-retardant unsaturated polyester and preparation method thereof. A raw material formula comprises the following raw materials in percentage by mass: 49.5-65 percent of a phosphorus-boron flame-retardant unsaturated polyester prepolymer, 50-30 percent of an active diluent, 0.4-4.5 percent of a photoinitiator and 0.1-0.5 percent of a polymerization inhibitor, wherein the phosphorus-boron flame-retardant unsaturated polyester prepolymer is prepared by reacting dibasic alcohol, unsaturated dibasic anhydride and/or unsaturated dicarboxylic acid, a phosphaphenanthrene anhydride derivative and boric acid at the temperature of 150-205 DEG C. The volatilization loss rate in the curing process of unsaturated polyester is less than 1 percent, the appearance is transparent before curing and after curing, and vertical combustion passes through a grade UL94 V-0; and the ultraviolet-cured transparent halogen-free flame-retardant unsaturated polyester has the advantages of low volatilization loss, freeness from halogen, flame retardance, transparence and the like.

The invention relates to a ferritic stainless steel seamless steel tube and a preparation method thereof. The ferritic stainless steel seamless steel tube comprises the following elements in mass percentage: C is less than or equal to 0.03 %, Si is 0.7-1.1%, Mn is less than or equal to 1%, P is less than or equal to 0.03%, S is less than or equal to 0.02 %, Cr is 17-19%, Ti is 0.2-0.4%, N is less than or equal to 0.025%, Cu is less than or equal to 0.25%, Al is 0.8-1.2% and the balance of Fe. The preparation method comprises the following steps: (a) hot rolling perforation; (b) first acid pickling and inspection; (c) lubrication; (d) cold drawing/cold rolling; (e) second acid pickling; (f) thermal processing; and (g) third acid pickling and inspection. Since the weight percentages of Si and Al in the component elements are improved, the inoxidizability of stainless steel is greatly improved, and stainless steel with high yield strength, low plasticity and 1.5 times of thermal conductivity of austenitic stainless steel is provided; according to the preparation method of the ferritic stainless steel seamless steel tube, all steps are linked with one another; the operation is relatively simple; and the ferritic stainless steel seamless steel tube is relatively low in cost.

The invention discloses kiwi berry mixed fruit wine which is prepared from the following raw materials in parts by weight: 100-150 parts of kiwi berry, 20-50 parts of apples, 10-30 parts of red dates, 5-20 parts of wolfberry fruits, 3-10 parts of honeysuckle, 30-50 parts of grapefruit, 10-30 parts of snow pear, 30-50 parts of grape, 20-60 parts of loquat, 5-10 parts of potato, 30-60 parts of hawthorn, 10-25 parts of litchi, 20-40 parts of cherry fruits, 30-70 parts of sea buckthorn fruit, 3-10 parts of lily and 4-10 parts of clove. The invention further provides a brewing method of the kiwi berry mixed fruit wine; the brewing method is simple in process and easy to operate; the prepared kiwi berry mixed fruit wine is rich in nutrients, soft in mouthfeel and strong in fruit fragrance.

A process for preparing the antioxidizing cottonseed polypeptide powder used as the nutrient intensifier for improving immunity includes such steps as mixing cottonseed protein with distilled water, grinding, regulating pH value and temp, adding alkaline proteinase, enzymolyzing, adding flavouring proteinase, regulating pH value and temp, enzymolyzing, boiling for deactivating enzyme, cooling, filtering, vacuum concentrating, and spray drying.

The invention relates to a preparation method of an anti-alumina-electrolysis prebaked anode, which comprises the following steps: carrying out high-temperature calcination on petroleum coke to obtaincalcined coke, and crushing, screening and grading the calcined coke; adding the obtained calcined coke aggregate and powder into a kneading pot according to a designed proportion, performing kneading and preheating, adding an additive and a binder coal pitch, continuing heating, and uniformly kneading the materials to obtain anode paste; putting the obtained anode paste into a vibration formingmachine for vibration forming; cooling an antioxidant prebaked anode green body, and then placing the antioxidant prebaked anode green body in a roasting furnace for roasting; and after roasting is finished, performing cooling and discharging to obtain an anti-alumina-electrolysis prebaked anode finished product. The preparation method of an anti-alumina-electrolysis prebaked anode has the beneficial effects that the method is used for preparing an anti-alumina-electrolysis prebaked anode, so that the air reaction resistance and the carbon dioxide reaction resistance of the prebaked anode areimproved, the oxidation resistance of the prebaked anode is improved, the carbon residue amount of the anode is reduced, and the service cycle of the anode is prolonged by 1-2 days.

The invention discloses a special stress-resistant feed for weaned piglets and the application of the special stress-resistant feed. The special stress-resistant feed is prepared from 400-500g/kg of puffing corn, 150-300g/kg of soybean meal, 50-70g/kg of fermentation soybean meal, 50-60g/kg of puffing soybeans, 50-60g/kg of fish meal, 40-70g/kg of lactose, 50-70g/kg of whey powder, 1-4g/kg of an enzymic preparation, 20-30g/kg of vegetable oil, 0.5-1.5g/kg of an antioxidant, 1-2g/kg of choline chloride, 5-10g/kg of calcium carbonate, 7-10g/kg of dicalcium phosphate and 8-12g/kg of a 1% premix feed additive. The special stress-resistant feed disclosed by the invention has the characteristics of being comprehensive in nutrients and functions and notable in effects, and being capable of improving the antioxidant ability of the piglets, having the function of protecting intestinal tract barriers, eliminating pathogenic bacteria in intestinal tracts of the piglets, maintaining the micro-ecology balance of intestinal flora, relieving the situation that the digestion of the piglets is weakened caused by stress, improving the immunity of the piglets, relieving the immune suppression caused by stress, and improving the production performance of the piglets.

The invention relates to a preparation method of a fuel-cell catalyst Pt/WO3. According to the preparation method of the fuel-cell catalyst Pt/WO3, a Pt/WO3 electro-catalyst is obtained through taking mesoporous WO3, which is prepared by taking a mesoporous silicon-oxide molecular sieve as a template, as a carrier, and pouring the reduced Pt/glycol liquid onto a WO3 carrier material. The preparation method has the advantages that the preparation conditions are mild, the operation is easy, Pt can be carried on a non-carbon carrier, and the application range of the preparation method is expanded. The Pt/WO3 has excellent electrochemical activity and stability when the Pt/WO3 serves as an anode catalyst of a proton exchange membrane fuel cell.

The invention discloses healthcare walnut oil with a calcium supplementing function, and relates to the technical field of biological medicine. The healthcare walnut oil is prepared through raw materials as follows: walnut oil, walnut kernels, tea oil, peanut oil, sea clam meats, kelps, goat milk, hyacinth beans, unprocessed rehmannia roots and stearin. A method for specifically preparing the healthcare walnut oil comprises the steps as follows: A, pretreatment of sea clams; B, pretreatment of the kelps; C, pretreatment of the unprocessed rehmannia roots; D, squeezing; E, primary extraction; F, secondary extraction; G, primary mixing; H, secondary mixing; and I, refined filtration. The healthcare walnut oil has the characteristics of complete nourishments, capacity of supplementing calcium and the like; and as edible oil, the healthcare walnut oil is suitable for being eaten by crowds with calcium deficiency, children and old people.