37results about How to "Improve Oxidation Stability" patented technology

The invention discloses a silver-coated copper powder preparation method based on nickel layer enhanced palladium catalysis and active hydrogen synergistic deposition, and relates to the technical field of powder surface treatment. The method specifically comprises the following steps that copper powder is soaked in acid liquor, then filtering, washing and drying are conducted, and pretreated copper powder is obtained; immersing the pretreated copper powder into a hydrochloric acid solution of nickel chloride hexahydrate, and then filtering, washing and drying to obtain sensitized copper powder; immersing the sensitized copper powder into a hydrochloric acid solution of palladium chloride, and then filtering, washing and drying to obtain activated copper powder; mixing the activated copper powder with the reduction solution to obtain a solid-liquid mixture, adding a silver-ammonia solution into the solid-liquid mixture, heating for reaction, and filtering after the reaction is finished to obtain a solid product; and washing and drying the solid product to obtain the silver-coated copper powder based on nickel layer enhanced palladium catalysis and active hydrogen synergistic deposition. The silver-coated copper powder with a compact silver layer and high binding force is prepared through the ternary synergistic effect of nickel layer sensitization, palladium nanometer activation and formaldehyde reduction.

The invention relates to a biodegradable hydraulic oil composition and a preparation method of hydraulic oil, and relates to the technical field of hydraulic oil compositions.The hydraulic oil composition comprises, by weight, 20-37% of ester oil, 5-10% of refined vegetable oil and 5-10% of a demulsifier, and the total weight of the ester oil, the refined vegetable oil and the demulsifier is 100%. The content of the refined vegetable oil is 62-79.9 wt%, the content of the demulsifier is 0.1-1 wt%, and the preparation method of the refined vegetable oil comprises the following steps: pre-loading a nanocapsule with an antioxidant as an inner core in activated clay, loading the activated clay pre-loaded with the nanocapsule into deacidified oil, and filtering to obtain the refined vegetable oil. The hydraulic oil composition disclosed by the invention has excellent biodegradability and also has the technical effects of relatively good oxidation stability and viscosity-temperature property.

This application discloses a flexible light-emitting sensor, its fabrication method, and its application in the non-destructive detection of mercury ions, belonging to the field of sensor materials and detection technology. The technical solution of this application introduces phycocyanin as a functional crosslinking agent into a polyacrylamide (PAAM) network. The prepared phycocyanin-polyacrylamide (PC-PAAM) hydrogel combines the structural stability of polyacrylamide with the fluorescence properties and chemical reactivity of phycocyanin. This gel, within a soft and biocompatible monomer network, integrates strong responsive fluorescence, intrinsic antioxidant protection, and excellent underwater adhesion, achieving direct fingertip contact surface sensing with a synergistic mechano-optical effect. Furthermore, by combining a machine learning model trained based on hydrogel fluorescence images, it can further support precise, portable, and visualized quantitative analysis of mercury ion pollution using smartphone imaging technology.

A perilla oil α-linolenic acid microcapsule and its preparation method belong to the food processing field, including the following steps: (1) extraction of perilla oil; using a bio-enzyme-assisted low-temperature pressing method, a compound enzyme is added to perilla seeds for enzymatic hydrolysis, followed by low-temperature pressing to collect perilla seed oil; (2) enrichment and purification of α-linolenic acid; the perilla seed oil obtained in step (1) is purified by molecular distillation technology, and the perilla oil fraction enriched with α-linolenic acid is collected; (3) microencapsulation; using the perilla oil enriched with α-linolenic acid obtained in step (2) as the core material, after selecting a suitable composite wall material, perilla oil α-linolenic acid microcapsules are obtained by spray drying. This invention improves the extraction efficiency of perilla oil, retains the natural activity of α-linolenic acid; efficiently enriches α-linolenic acid through molecular distillation technology, increasing the content of functional active ingredients in the product; and improves the oxidative stability and storage performance of α-linolenic acid.

This invention belongs to the field of lithium metal battery technology, specifically relating to a fluorinated phase-separated polymer ion gel electrolyte, its preparation method and application, and lithium metal batteries. The fluorinated phase-separated polymer ion gel electrolyte provided by this invention comprises a solid phase and a liquid phase; the solid phase is a copolymer of a fluorinated acrylate monomer and a crosslinking agent containing carbon-carbon double bonds; the liquid phase comprises an ionic liquid and a lithium salt dissolved in the ionic liquid. Compared to liquid electrolytes and traditional SPEs, the fluorinated phase-separated polymer ion gel electrolyte provided by this invention has high ionic conductivity, mechanical strength, interfacial stability, and safety. It can effectively suppress the growth of lithium dendrites and adapt to large volume changes, avoiding short circuits and thermal runaway in lithium metal batteries under conditions of overcharging, over-discharging, or mechanical impact.

The embodiment of the invention provides a battery. A positive plate in the battery comprises a positive active material, and the positive active material comprises a positive substrate and a coating layer located on at least part of the surface of the positive substrate; the positive electrode substrate comprises LiNixCoyMzAaO2, 0.5 < = x < = 0.95, 0.05 < = y < = 0.2, 0 < = z < = 0.2, and 0 < = a < = 0.01; m comprises at least one of Mn and Al, and A comprises at least one of Al, Mg, Zr, Ti, Nb, La, Ce and Y; the coating layer comprises crystalline state Li3BN2; the electrolyte layer comprises a first electrolyte layer, the first electrolyte layer is close to the positive plate, and the first electrolyte layer comprises LimPSnDd. Under the high-voltage working condition, excellent interface performance is achieved between the positive plate and the electrolyte layer, the interface impedance is low, and the battery has excellent cycle performance and rate capability.

The application discloses a kind of flavor beef tallow and preparation method thereof, it is related to food processing technical field, comprising the following steps: step S10, obtain parachlorella protein extract;Step S20, parachlorella protein extract, reducing sugar and beef tallow are mixed, and Maillard reaction is carried out, to obtain first mixture;Step S30, first mixture is heat treated, to obtain second mixture, i.e. the flavor beef tallow.The parachlorella protein extract and reducing sugar are as core, construct dry method Maillard reaction system, generate a variety of rich flavor substances, produce bioactive polypeptide simultaneously, realize beef tallow flavor enhancement and nutrition upgrade.The flavor beef tallow prepared by the application is rich in bioactive polypeptide and Maillard reaction type antioxidant, with rich and pure flavor, balanced nutrition and excellent antioxidant stability.

The present invention relates to a peptide having obesity and muscle loss inhibitory activities, and a use thereof. The peptide has excellent effects on suppressing appetite, promoting energy metabolism, inhibiting fat accumulation, and promoting lipolysis, and inhibits muscle atrophy while promoting muscle synthesis, such that the peptide can be effectively used for the prevention or treatment of obesity and sarcopenia.

This invention discloses a high oil-holding capacity and temperature-resistant oleogel and its preparation method, comprising dissolving a gelling agent in a base oil, dispersing it under magnetic heating, and obtaining the oleogel after cooling; wherein the gelling agent is composed of β-sitosterol and propyl gallate. This invention uses β-sitosterol and phenols as gelling agents to improve the types of dual gelling agents and enhance various properties of the oleogel; the entire preparation process is carried out under relatively mild temperature conditions, and by controlling the amount of β-sitosterol and phenols, the performance of the final oleogel can be effectively regulated to meet the needs of different application scenarios; this technical route does not involve hydrogenation, avoiding the generation of trans fatty acids; at the same time, it effectively reduces the calorific value of the oil and improves its oxidative stability and health benefits.

The invention discloses a high-voltage-resistant gel polymer electrolyte for a supercapacitor and a preparation method and application thereof, and belongs to the technical field of supercapacitors. In the electrolyte, the high-pressure-resistant additive, the auxiliary additive, the lithium salt and the mixed solvent are reasonably matched. The high-pressure-resistant additive contains two key functional groups, namely trifluorosulfonyloxy and cyano, so that a stable multifunctional protective layer can be constructed on the interface of the positive electrode and the negative electrode, and the problem of interface degradation is solved. According to the preparation method, additives and lithium salt are added step by step, a cross-linked structure is finally formed on the surface of the electrode in situ, the binding force of the electrolyte and the electrode is enhanced, and smooth ion transmission is guaranteed. When the composite material is applied to preparation of a supercapacitor, the performance and stability of the supercapacitor under a high-voltage working condition can be improved, the energy density and the power density are improved, the service life is prolonged, the requirement of the market for the high-performance supercapacitor is met, and technical development and application of the supercapacitor are promoted.

The application belongs to the technical field of automobile exhaust purification catalytic materials, and particularly relates to a kind of oxygen defect Pt (111 / 200) composite crystal face atomic level PtM supported rod-shaped La-Al2O3 catalytic materials and its preparation method and application, wherein the catalytic material includes carrier and its supported active ingredient, the carrier is rod-shaped La-Al2O3;Active ingredient is atomic level PtM composite material, Pt and M in it exist in the form of nano-particle, single atom, diatomic and few atom cluster;And Pt exists 111 and 200 composite crystal face;M includes at least one of Pd, Co, Mn and Cu;The carrier and / or active ingredient has oxygen defects.The catalyst improves the molecular activation capacity, low-temperature catalytic oxidation activity and anti-aging stability, and can improve the automobile exhaust catalytic oxidation treatment effect.

The invention belongs to the technical field of radar system cooling and discloses cooling liquid for a radar system as well as a preparation method and application of the cooling liquid. The cooling liquid comprises base oil and an additive, and the base oil comprises 80-100 wt% of paraffin-based mineral oil and 0-20 wt% of naphthenic mineral oil based on the total weight of the base oil; the weight-average molecular weight of the paraffin-based mineral oil is 250-300 g / mol, and the weight-average molecular weight of the naphthenic mineral oil is 260-320 g / mol. The cooling liquid has the advantages of being excellent in high and low temperature tolerance, high in oxidation stability, good in electrical insulation performance, good in heat transfer performance, good in material compatibility and environmentally friendly, can be used for effective cooling of a radar system and corrosion protection of multi-metal materials and welding flux in the radar liquid cooling system, and is long in service life and suitable for industrial production.

This invention discloses a method for targeted activation of endogenous enzymes and debittering / fragrance enhancement in flaxseed while maintaining its granular shape. The method includes the following steps: microcrack treatment of flaxseed; spraying an ethanol-water solution onto the surface of the flaxseed to create a slightly moist state; heating and conditioning in a heat-preserving conditioning device to activate the endogenous cyanogenic glycoside hydrolytic enzyme system; short-term heat treatment under closed or semi-closed negative pressure conditions and introducing cyanide-containing exhaust gas into an exhaust gas treatment system; and cooling and tempering to obtain debittered and fragrance-enhanced flaxseed. This invention, through the synergistic effect of microcrack treatment and ethanol-water wetting, effectively activates endogenous enzymes to promote cyanogenic glycoside hydrolysis and removal of volatile cyanide-containing components under extremely low wetting solution addition conditions, while simultaneously inhibiting the hydration and swelling of seed coat mucilage. This results in treated flaxseed maintaining a dispersed granular state and good flowability, suitable for subsequent continuous pressing processing.

This invention belongs to the fields of biomedical materials and colloid chemistry, and discloses a structurally remodeled egg yolk low-density lipoprotein biomimetic liposome and its application in regulating cholesterol metabolism. The method includes extracting and purifying natural egg yolk low-density lipoprotein; selectively removing endogenous cholesterol by adding β-cyclodextrin under alkaline conditions; adding a phytosterol ethanol solution to the cholesterol-removed low-density lipoprotein dispersion, followed by incubation and dialysis purification to obtain the biomimetic liposome. The obtained biomimetic liposome uses partially cholesterol-removed egg yolk low-density lipoprotein as its structural framework, with phytosterols embedded in its phospholipid monolayer and lipid core interface. This biomimetic liposome can inhibit cholesterol micelle formation, reduce cholesterol absorption, promote macrophage cholesterol efflux, and inhibit macrophage foam formation. It can be used to prepare cholesterol metabolism regulating materials, functional delivery systems, and dietary supplement products.

The invention relates to the technical field of pet food processing, and particularly provides a protein-lipid compound oil gel coating composition which comprises the following components in parts by weight: 60-70 parts of egg yolk oil; 10 to 20 parts of eggshell membrane peptide; 5-10 parts of medium-chain fatty acid; 0.1 to 0.5 part of vitamin E; 10 to 15 parts of ethyl cellulose; and 2-5 parts of nano silicon dioxide. Egg oil is used as a substrate, an oil gel three-dimensional network is constructed, eggshell membrane protein is integrated into lipid, and precise function delivery of joint and fur health is achieved. The solid coating is stable in structure and high in oxidation resistance, can be firmly attached to the surface of the pet food, effectively prevents grease oxidation and leakage, and remarkably prolongs the shelf life and improves the additional value of the product.

The invention discloses a pure highland barley powder extrusion puffing process optimization method, and belongs to the technical field of food extrusion processing. According to the method, the technical problems that the high-fiber highland barley powder is easily subjected to insufficient puffing and too hard texture in the extrusion process, and the retention rate of heat-sensitive functional components such as beta-glucan is low are solved. The method comprises the following steps: optimizing process parameters based on a multi-target response surface method, and determining the water content of materials, the temperatures of a first region, a second region, a third region and a fourth region of a machine barrel and the rotating speed of a screw; carrying out low-temperature superfine grinding on the highland barley powder; a compound emulsifier and edible sodium bicarbonate are added during hardening and tempering; during extrusion, the temperature gradient between the third area and the fourth area is controlled to be smaller than or equal to 20 DEG C; the method is mainly used for producing the high-quality pure highland barley puffed food, the puffing rate and the beta-glucan retention rate of the product can be synergistically improved, the hardness of the product is effectively controlled, and the eating quality and the nutritional value are improved.

The invention discloses a preparation method of antioxidant nano-copper particles based on an intermediate metastable state, which comprises the following two steps: firstly, reacting copper salt with a first reducing agent and a pH regulator for 10-40 minutes in a first organic solvent of 70-130 DEG C to obtain copper-based intermediate particles of 20-25 nm; and then dispersing the intermediate in deionized water, adding a second reducing agent, a pH regulator and a coating agent, reacting at 70-130 DEG C for 20-60 minutes, so that the coating agent and copper atoms are deposited and synchronously bonded in situ under an alkaline condition to form a continuous coating layer with the thickness of 4-10nm, and finally obtaining the antioxidant nano-copper particles with the particle size of 30-40nm and high sphericity through epitaxial growth control. According to the preparation method, nucleation and growth processes are accurately regulated and controlled under mild conditions, and the nano-copper particles which are uniform in particle size, high in sphericity degree and long-acting in oxidation resistance are directly prepared.

This invention discloses a polyaromatic hydrocarbon for preparing proton exchange membranes, its preparation method, and its application, belonging to the field of proton exchange membrane material preparation technology. This invention solves problems such as low molecular weight, uneven sulfonation, chain breakage in sulfonated polymers, poor dimensional stability, and poor mechanical properties in proton exchange membrane materials. Using aromatic monomers and 3,5-difluorotrifluoroacetophenone as raw materials, this invention employs a superacid-catalyzed Friedel-Crafts hydroxyalkylation reaction to prepare fluorinated aromatic polymers. Then, sulfonic acid groups are introduced onto the fluorinated aromatic polymers via nucleophilic substitution followed by sulfonation, preparing monosulfonated and disulfonated fluorinated sulfonic acid polymers. Proton exchange membranes are then prepared using these polymers as raw materials. The significant polarity difference between the hydrophobic fluorinated benzene ring side groups and the hydrophilic disulfonic acid groups in this invention is more conducive to forming a microphase separation structure and constructing continuous proton transport channels. Simultaneously, the hydrophobic fluorinated segments effectively suppress membrane swelling and improve its dimensional stability.

The invention discloses high-oil-carrying-capacity powdered oil seasoning powder containing delicious amino acid and a preparation method, and particularly relates to the technical field of food processing. The seasoning powder is prepared by compounding high-oil-carrying-capacity powdered oil prepared by a specific process and delicious amino acid flavor mother liquor which serve as core functional components with compound fruit and vegetable powder and seasoning auxiliaries. Grease gel formed by compounding high-oil-carrying-capacity powdered grease according to an optimized proportion is used as a core material, a compound of sodium alginate and high-fat pectin is used as a wall material, the gel is prepared through emulsification and freeze-drying processes, and the oil carrying capacity reaches up to 83%; the delicious amino acid flavor mother liquor is prepared by hydrolyzing protein raw materials step by step through protease and is rich in delicious amino acids such as glutamic acid and asparaginic acid. The seasoning powder integrates the lubricating taste of grease, the natural flavor of fruits and vegetables and the mellow and delicious taste of amino acid, is high in oxidation stability, long in shelf life, good in eating taste and excellent in digestion characteristic, and is suitable for various food processing scenes such as cooking, drinks and cakes.

The present invention relates to a novel peptide having an antidiabetic activity. The peptide improves sugar metabolism and insulin resistance, inhibits amyotrophy while increasing muscle mass, and protects renal functions, and thus may be used for treating and relieving diabetes and diabetic complications.

The application discloses a kind of high-stability pentatomidae oil microcapsules and its preparation method and application, belong to microcapsule technical field.The microcapsule uses pentatomidae oil as core material, maltodextrin, arabic gum and gelatin as wall material, and the mass ratio of core material and wall material is 1:2~1:4;Preparation method includes that maltodextrin, arabic gum and gelatin are added to water and heated to be dissolved to obtain wall material solution, pentatomidae oil is added and emulsified by high shear to obtain emulsion, then by spray drying or freeze drying treatment, pentatomidae oil microcapsule is obtained.The application realizes the efficient embedding of pentatomidae oil by optimizing the composition of wall material and core wall ratio, and the embedding rate can reach more than 95%, the obtained microcapsule particle size is uniform, oxidation stability is significantly improved, and can effectively mask the fishy smell of pentatomidae oil itself.

This invention discloses a high-protein, high-energy nutrient solution, its preparation method, and its application, belonging to the field of nutritional food processing technology. Its raw materials include: concentrated milk protein, concentrated whey protein, casein, rapeseed oil, coconut oil, collagen peptides, fish oil extract, flaxseed oil, medium-chain triglycerides, maltodextrin, polydextrose, sodium caseinate, phospholipids, complex vitamins, complex minerals, taurine, carrageenan, gellan gum, sweeteners, pH adjusters, edible flavorings, and water. This invention, through fermentation and microencapsulation, significantly improves the physical and oxidative stability of the multi-protein, multi-oil system, effectively masks fishy odor, and solves the problems of product stability, flavor, and nutrient retention.

This invention relates to the field of lithium-ion battery technology, and discloses a composition for preparing a fire-retardant composite electrolyte, the fire-retardant composite electrolyte, and a method for preparing the same. The composition contains the following components: lithium hexafluorophosphate, solvent, flame retardant, overcharge protection agent, surface film-forming agent, cathodic protection agent, and fluorocarbon surfactant; the flame retardant is selected from at least one of nitrogen-containing compounds and organophosphorus compounds; the overcharge protection agent is selected from at least one of tris(4-methoxyphenyl)phosphine and 2,5-di-tert-butyl-1,4-dimethoxybenzene. The fire-retardant composite electrolyte prepared from the composition provided by this invention can improve battery safety while ensuring high electrochemical performance when used in lithium batteries.

The present invention relates to a novel anticancer peptide. The anticancer peptide inhibits cancer cell proliferation and metastasis, induces cell death, and relieves drug resistance, and thus may be utilized for an anticancer use and an anticancer adjuvant.

The invention discloses a preparation process of vegetable insulating oil with high oxidation stability, and belongs to the technical field of vegetable oil refining. The core of the process is as follows: firstly, taking palladium and nickel salts in a specific molar ratio as precursors, and combining with polyethylene glycol to prepare a palladium-nickel bimetallic catalyst loaded on alkaline carclazyte; then, vegetable oil is mixed with the catalyst and activated carbon, and hydrogen is introduced under mild vacuum and heating conditions for selective hydrogenation refining; and finally, adding an antioxidant and a pour point depressant into the refined oil to obtain a final product. Through the synergistic effect of the catalyst, extremely unstable linolenic acid in hydrogenated oil can be efficiently and selectively hydrogenated, by means of an integrated process and blending, the oxidation stability is remarkably improved, meanwhile, the excellent low-temperature fluidity of the product is kept, the refining yield is high, the process is simple and convenient, and the method is suitable for large-scale production of the environment-friendly high-performance vegetable insulating oil.

The invention discloses a refining and recycling method of waste lubricating oil, and relates to the technical field of lubricating oil recycling. The method comprises the following steps: performing ultrasonic circulating pretreatment on waste lubricating oil; then adding an oleophylic sulfydryl functionalized cyclodextrin composite material for reaction, and carrying out hot filtration in cooperation with aminated diatomite loaded nano zinc oxide; performing falling-film plasma activation and magnetic core-shell catalyst hydrotreatment on the filtrate; and finally, carrying out reduced pressure distillation and molecular distillation purification to obtain refined lubricating oil. The method provided by the invention realizes deep removal of colloid and heavy metals, effectively prevents catalyst poisoning, solves the problem of solid-liquid separation, and significantly improves the purity and quality of regenerated oil.

The application belongs to the technical field of electrochemical energy storage, and particularly relates to a high-voltage-resistant zinc salt electrolyte and a dual-ion battery composed of a zinc negative electrode and a graphite positive electrode. The electrolyte is composed of a zinc salt and an organic solvent, and the organic solvent is a dinitrile group-containing solvent. Compared with existing zinc salt electrolytes, the zinc salt electrolyte has very high oxidation stability, can significantly improve the coulombic efficiency and cycle performance of a high-voltage dual-ion battery composed of a zinc negative electrode and a graphite positive electrode, and has a good application prospect in the field of large-scale energy storage.

The invention provides V-type starch and an application of the V-type starch in embedding lutein grease. The method comprises the following steps: gelatinizing starch, dropwise adding ethanol at 85-95 DEG C at a flow rate of 40-60 mL / h, and purifying to obtain the V-type starch. The V-type starch is used for embedding the lutein oil, so that the lutein can be uniformly distributed in a fermented flour product, the problems of uneven color, oil spots and the like are avoided, the lutein is more easily accepted by consumers, the oxidation stability of the lutein can be remarkably improved, and the retention rate of the lutein in the fermented flour product is further improved; the nutritional value of the fermented flour product is enhanced.

The application discloses a kind of organic-inorganic coating lithium battery separators and preparation method thereof, to plant phenolic compound processing ceramic particles, later with isocyanate crosslinking reaction to obtain functionalized ceramic material, then with polyphosphine and its derivative self-crosslinking to form polyphosphine / functionalized ceramic composite coating, after the surface glyceride compound treatment, the separator coating prepared.The application introduces organic-inorganic coating on polyolefin separator single side or both sides, further improves the adhesion strength, mechanical properties and ionic conductivity of separator coating under the premise of not affecting other properties, and reduces the moisture content of separator;Further improve its electrochemical performance, so that it can better meet the performance requirements of lithium ion battery separator.

The invention discloses a NiCo-MOF derived carbon nanotube wave-absorbing material with a core-shell structure and a preparation method of the NiCo-MOF derived carbon nanotube wave-absorbing material, and relates to the technical field of wave-absorbing materials. According to the method, NiCo-MOF with a core-shell structure is obtained by controlling the solvent proportion, then a carbon nano tube grows on the surface of the NiCo-MOF in situ, the prepared MOF-derived carbon nano tube has a hollow core-shell structure, and the surface of the MOF-derived carbon nano tube is covered with a layer of dense carbon nano tube. By adopting the structure, the conductivity of the material is greatly improved, the types of interface polarization are enriched, and good wave absorbing performance is shown in the frequency band of 2-18 GHz; the hollow structure is beneficial to multiple reflection of electromagnetic waves inside, and when the matching thickness is 2.5 mm, the effective absorption bandwidth can reach 5.7 GHz, and the minimum absorption peak reaches 4.8 GHz. The method is simple in technological process, low in cost and suitable for large-scale preparation, and has wide application prospects in the fields of light broadband wave absorption, thermal protection and the like.