11results about How to "Improves antioxidant stability" patented technology

The invention relates to the technical field of aluminum material processing oil, and particularly discloses an environment-friendly residue-free aluminum material processing oil composition and a preparation method thereof. The environment-friendly residue-free aluminum product processing oil composition is prepared from the following raw materials in parts by weight: 60 to 100 parts of polyglycol ether, 2 to 17 parts of synthetic ester, 0.5 to 2.5 parts of antioxidant, 0.1 to 0.5 part of metal corrosion inhibitor and 0.1 to 3 parts of tackifier. The synthetic ester comprises star-shaped complex ester, and the star-shaped complex ester comprises the following raw materials: pentaerythritol, oleic acid, phenylphosphonic acid and boric acid. The environment-friendly residue-free aluminum product processing oil composition disclosed by the invention can be used for forming and processing aluminum products, can effectively inhibit oxidation caused by factors such as high-temperature friction heat and metal catalysis in a cyclic heating process under heavy-load and high-temperature working conditions, can realize almost no residue after aluminum product post-treatment at 540 DEG C, ensures that the surfaces of the aluminum products are bright and free of discoloration, and has the advantages of simple process, low cost and the like. And the subsequent cleaning procedure is omitted.

The invention belongs to the technical field of fuel cell proton exchange membranes, and discloses a cross-linking type polybenzimidazole proton exchange membrane with oxidation resistance and high proton conductivity and a preparation method of the cross-linking type polybenzimidazole proton exchange membrane. According to the cross-linking type polybenzimidazole, after polymerization of raw material monomers is completed, a silane coupling agent is added as a cross-linking agent, and polybenzimidazole containing the cross-linking agent is obtained through reaction. The polybenzimidazole containing the cross-linking agent can be prepared into a cross-linking type polybenzimidazole proton exchange membrane by using a solution casting method. According to the cross-linked polybenzimidazole disclosed by the invention, a stable and uniform Si-O-Si cross-linked network is constructed by adding the cross-linking agent and taking a hydroxyl group on the polybenzimidazole as a main reaction site, so that synchronous improvement of antioxidant stability and proton conductivity is synergistically realized. The polybenzimidazole proton exchange membrane containing the cross-linking agent has a good application prospect in the aspect of proton exchange membrane fuel cells.

This invention discloses a nutritional composition and preparation method for improving joint health in senior pets. The nutritional composition comprises: N-acetylglucosamine, chondroitin sulfate, methanesulfonylmethane, unsaponifiable avocado and soybean extract, hyaluronic acid, curcumin microcapsule powder, and high-concentration fish oil. This invention uses a lipid / polysaccharide bilayer microcapsule structure to encapsulate curcumin and fish oil, and prepares the product through low-temperature homogenization, spray drying, and granulation processes. The composition of this invention works synergistically through multiple pathways, simultaneously exerting effects on three key levels: anti-inflammation, lubrication, and cartilage repair. It can significantly inhibit joint inflammation, improve joint lubrication, and promote cartilage repair. This invention solves the problems of existing pet joint products, such as single pathways of action, low stability and bioavailability of lipid-soluble active ingredients, and lack of overall formulation optimization tailored to the characteristics of aging pets. It is suitable for daily joint health maintenance or adjunctive treatment in middle-aged and senior dogs and cats.

The invention relates to the technical field of lithium ion batteries, in particular to a high-temperature-resistant electrolyte and a lithium ion battery. The high-temperature-resistant electrolyte comprises a lithium salt, an organic solvent, a film-forming additive and a high-temperature-resistant additive; based on the total mass of the high-temperature-resistant electrolyte being 100%, the content of the high-temperature-resistant additive is 1-5%; the high-temperature-resistant additive is selected from a combination of diphenylphosphonyl hydroxylamine and phenylphosphonyl nitrile. The high-temperature-resistant additive is introduced into the high-temperature-resistant electrolyte provided by the invention, so that a stable and compact SEI film can be formed on the surface of a negative electrode, dendritic crystal growth is inhibited, active lithium loss is reduced, meanwhile, a high-temperature-resistant protective layer is generated on the positive electrode side, and the anti-oxidation stability of a positive electrode interface is effectively improved, so that the electrode interface has compactness and heat resistance; and the interface stability at high temperature is obviously improved, so that the battery applying the composite material has excellent high-temperature cycle performance.

The invention discloses a preparation method of a silver-coated copper nanowire, and belongs to the technical field of nano material preparation. According to the silver-coated copper nanowire, a copper nanowire serves as an inner core, the outer side of the inner core is coated with a compact and continuous silver shell layer, and the preparation method comprises the steps that firstly, under the protection of inert atmosphere, long-chain alkylamine serves as a reducing agent and an end-capping reagent, and the copper nanowire with the high length-diameter ratio is synthesized through a thermal reduction method; and then, a chemical reduction deposition method is adopted, ascorbic acid serves as a reducing agent, a silver salt solution is slowly dropwise added into the copper nanowire dispersion liquid, and in-situ reduction and deposition are conducted on the surface of the copper nanowire to form a uniform silver shell layer. The preparation method effectively solves the problems that the copper core is easy to oxidize and the silver shell layer is discontinuous, and the prepared silver-coated copper nanowire has the characteristics of low cost, high conductivity, high oxidation resistance and excellent dispersity, and is very suitable for preparing a high-performance and flexible transparent conductive film.

The application belongs to the technical field of lubricating oil additives, and particularly relates to a piperidinol-aryl diacid ester hindered amine high-temperature antioxidant and a preparation method thereof. The application constructs a high-performance hindered amine antioxidant by esterification condensation of piperidinol containing a bulky aryl group and aryl diacid containing a rigid naphthalene ring skeleton. The molecular design effectively reduces the volatilization loss of the antioxidant at high temperature, prolongs the effective action time of the antioxidant in base oil, and simultaneously, the two functional units of hindered amine and phosphite integrated in the molecular structure can play a synergistic antioxidant effect. Compared with the prior art, the antioxidant of the application can more effectively control the acid value increase, viscosity rise and deposit generation of base oil under high-temperature and metal catalysis conditions, and meets the high-temperature antioxidant demand of a long oil change cycle.

This invention discloses a method for preparing a nano-microstructure composite cathode for a solid oxide electrolytic cell, relating to the field of solid oxide electrolytic cell technology, including: (1) designing perovskite oxide A x A' y BO 3‑δ , x=0.95~0.60, y=0.05~0.55; (2) According to the stoichiometric ratio of A-site, A'-site and B-site ions, the corresponding salt solution and complexing agent solution are mixed, heated and stirred until gel-like, then ignited and calcined at high temperature to obtain A x A' y BO 3‑δ Cathode powder; (3) A x A' y BO 3‑δ The cathode powder is subjected to solution reaction treatment and high-temperature calcination treatment in sequence to obtain a nano-microstructured composite cathode for solid oxide electrolysis cells. The nano-microstructured composite cathode obtained by this invention exhibits high antioxidant stability, adsorption and catalytic activity for carbon dioxide reduction, and resistance to carbon deposition during carbon dioxide cyclic electrolysis.

The invention relates to the technical field of functional food, in particular to a composite peptide nutritional supplement composition and a preparation method thereof. The composite peptide nutritional supplement composition comprises fructo-oligosaccharide liquid, concentrated jujube juice, synergistic modified composite peptide, ginseng powder, raspberry powder, taurine, blood orange powder, wolfberry powder, sea buckthorn powder, astragalus membranaceus powder, rhizoma polygonati powder, cistanche powder, gastrodia elata powder, eucommia ulmoides leaf powder, dogwood powder, sophora flower bud powder, liquorice powder, polygonatum odoratum powder, ginger powder, a vitamin compound, citric acid, edible essence and purified water. The synergistically modified composite peptide is obtained by structurally modifying a multi-source small molecule peptide through a host-guest inclusion structure and dynamic borate bond network construction under the synergistic effect of hydroxypropyl-beta-cyclodextrin, 3-aminophenylboronic acid and tannic acid. The preparation method comprises the following steps: preparation of the synergistic modified composite peptide, construction of a composite nutrient solution system, shear mixing, homogenization and instantaneous high-temperature sterilization. The stability, the oxidation resistance and the active ingredient retention rate of a composite peptide nutrition system can be improved.

This invention relates to the field of cosmetic raw material processing technology, and discloses a preparation process for active nano-encapsulated materials for cosmetics. The preparation process is as follows: Cosmetic active ingredients are added to an alkenylated modified chitosan solution and ultrasonically treated for 1-3 minutes. Then, thiolated silk fibroin is added and mixed evenly. Next, a photoinitiator, 2-hydroxy-4'-(2-hydroxyethoxy)-2-methylphenylacetone, is added to the system. The mixture is irradiated under 365 nm ultraviolet light at room temperature for 10-20 minutes to obtain a dispersion of nano-hydrogel encapsulated materials containing the active ingredients. After ultrafiltration purification, 5% (w / w) of trehalose is added, stirred to dissolve, and freeze-dried to obtain active nano-encapsulated materials for cosmetics. The active nano-encapsulated materials for cosmetics prepared by this invention exhibit good stability, sustained-release and controlled-release properties, and antioxidant properties.

This invention relates to the field of electrochemical energy storage materials and lithium metal battery technology, specifically to an in-situ polymerized solid electrolyte, its preparation method and application, and lithium metal batteries. This in-situ polymerized solid electrolyte is prepared by heating a ring-opening polymerization reaction using 1,3-dioxolane and 1,1,1-trifluoro-2,3-epoxypropane as reactants, sodium thiosulfate as an initiator, and lithium salt and plasticizer fluoroethylene carbonate as a precursor solution. This electrolyte possesses numerous amorphous regions, which is beneficial for ion transport, enabling the formation of a self-supporting dense structure. It also ensures close contact with the electrode, resulting in a pure interface that effectively reduces interfacial impedance and avoids side reactions at the electrode interface. Furthermore, it enhances oxidation resistance, broadens the electrochemical window, and inhibits dendrite growth. While achieving good mechanical properties, it also improves the cycle stability and safety performance of the battery. It has excellent application prospects in lithium metal batteries, lithium-ion batteries, solid-state energy storage systems, or flexible electronic devices.

This invention provides a sustained-release microcapsule and its preparation method. The sustained-release microcapsule comprises: a porous carrier core; an active ingredient loaded within the pores of the porous carrier core; and a bilayer membrane structure covering the outer layer of the porous carrier core. The bilayer membrane structure includes an inner membrane and an outer membrane, with the inner membrane located between the porous carrier core and the outer membrane. The inner membrane is a pH-responsive protective layer that maintains structural stability in acidic environments and swells and disintegrates in weakly alkaline environments. The outer membrane is a flavor-regulating layer for the sustained-release flavor substances. The porous carrier core of this invention provides a large specific surface area and pore structure, effectively solving the problems of easy oxidation and stratification of the active ingredient. The inner membrane protects the active ingredient from degradation in the acidic environment of the stomach and rapidly swells and disintegrates in the weakly alkaline environment of the small intestine, significantly improving bioavailability. The outer membrane improves the palatability of the product.