19results about How to "Gentle preparation process" patented technology

The invention discloses a soothing and oil-controlling composition derived from natural plants and application thereof, and belongs to the technical field of daily cosmetics. The composition is formed by compounding an artemisia annua extract, a rehmannia root extract, a calendula extract and a pomelo fruit extract, and the four plant extracts have a synergistic effect, have the effects of repairing, relieving and controlling oil, and can be used for preparing a skin care product special for oil-sensitive skin. The composition provided by the invention can effectively solve the problems of external oil and internal dry, redness and sensitivity, grease accumulation and the like of oily sensitive skin, and meets multiple skin care requirements.

This invention relates to a coolant for cold plate liquid cooling systems in data centers, its preparation method, and its application. The coolant, by weight percentage, comprises 25%-60% ethylene glycol, 0.02%-0.1% (based on the total mass of the complex) hydroxycarboxylic acid rare earth complex, 0.3%-0.8% organic acid corrosion inhibitor, 0.1%-0.3% azole copper corrosion inhibitor, 0.05%-0.3% polymeric stabilizer, 0.1%-0.5% pH buffer, 0.005%-0.02% bactericide, 0.01%-0.03% defoamer, and the balance deionized water. The rare earth complex is prepared by pre-complexing hydroxycarboxylic acid with soluble cerium salts at 50-80℃ and pH 6.8-7.5, solving the technical challenges of free rare earth salt hydrolysis and precipitation, EDTA corrosion of aluminum, and the difficulty in simultaneously achieving high conductivity and corrosion inhibition performance. It can be widely used in the secondary side circulation of cold plate liquid cooling systems in data centers.

The application provides a pore-forming agent for lithium ion batteries and a preparation method thereof, which comprises a wall material preparation step, a core material preparation step, a W / O type initial milk preparation step and a pore-forming agent for lithium ion batteries preparation step. The pore-forming agent preparation method is a new pore-forming agent synthesis route, which has the advantages of simple reaction steps, mild reaction conditions, high yield, low cost and environmental protection. The technology can accurately construct a uniform multi-level pore network by introducing the pore-forming agent into the electrode, significantly reduces the charge transmission impedance, effectively improves the fast charging capacity and high-rate discharge performance of the battery, greatly improves the electrode-electrolyte interface contact, and ensures the full use of the active material. The application also provides an application of the pore-forming agent for lithium ion batteries to lithium ion batteries. The application of the pore-forming agent for lithium ion batteries to the lithium ion batteries can improve ion conduction and improve the rate performance.

This invention relates to a Cr and Br dual-element doped polyanionic sodium-ion battery cathode material, sodium iron phosphate pyrophosphate, its preparation method, and its application, belonging to the field of sodium-ion battery technology. The general chemical formula of the cathode material of this invention is: Na₄Fe₂O₃. 3‑x Cr x (PO4)2P2O7Br y Where 0 < x < 0.5, 0 < y < 0.7; the precursor wet gel is obtained through a sol-gel process, dried, and then sintered. This invention relates to a Cr- and Br-doped polyanionic sodium-ion battery cathode material, sodium iron phosphate pyrophosphate. The Cr dopant enhances bulk stability, while the gradient distribution of Br forms a fast ion conduction layer on the surface. The two elements together improve the rate capability and cycle performance of the sodium-ion battery. This provides a modification strategy of significant reference value for cathode materials that suffer from low discharge specific capacity and poor cycle performance at high rates due to electron conductance differences.

This invention relates to the field of electronic packaging composite materials technology, and particularly to a thermally conductive epoxy encapsulation material, its preparation method, and its application. The invention uses Fe3O4 nanospheres and sodium polyacrylate solution as raw materials to prepare polyacrylic acid-modified Fe3O4 nanospheres; these are then blended with adipic acid and epoxy resin, and a thermally conductive epoxy encapsulation material is prepared through a curing reaction. The thermally conductive epoxy encapsulation material prepared by the method of this invention exhibits uniform dispersion of Fe3O4 nanospheres, good interfacial compatibility, and high thermal conductivity, demonstrating excellent thermal conductivity, interfacial reliability, and mechanical properties, making it well-suited for electronic chip packaging applications.

The application relates to a wood-based special material constructed by curled fibers and a preparation method and application thereof, and belongs to the technical field of aerogel materials. The application aims to solve the problems of large brittleness, poor thermal-mechanical stability and single function of existing ceramic aerogels in extreme environments. The wood-based special material constructed by curled fibers is composed of a three-component network of silicon carbide nanoparticles, carbon nanotubes and cellulose nanosheets; the cellulose nanosheets form a micro-coil structure, the silicon carbide nanoparticles are loaded on the surface of the cellulose nanosheets, the carbon nanotubes are interwoven between the cellulose nanosheets and the silicon carbide nanoparticles, and the three components jointly construct a three-dimensional network with a cross-scale hierarchical porous structure. The application relates to the application of the wood-based special material constructed by curled fibers in aerospace thermal protection, electromagnetic shielding, heat insulation, flame-retardant materials or deep space exploration equipment. The application does not need supercritical drying or high-temperature sintering, has low energy consumption and is suitable for large-scale preparation.

The invention discloses a preparation method of a Fe3O4 and plant polyphenol composite biomass-based photo-Fenton catalyst, belongs to the technical field of environmental catalytic materials, and relates to a preparation method of a biomass-based photo-Fenton catalyst. The invention aims to solve the problems of complex preparation process and high cost of the existing iron-based catalyst. The preparation method of the Fe3O4 and plant polyphenol composite biomass-based photo-Fenton catalyst comprises the following steps: 1, pretreating a biomass raw material; 2, loading iron species; 3, alkali precipitation; 4, reduction and nucleation; 5, circularly dipping and strengthening; and 6, post-treatment: collecting a product through magnetic separation, washing the product with pure water for five times, and drying the product to obtain the Fe3O4-plant polyphenol composite biomass-based photo-Fenton catalyst. The preparation method is simple and low in cost.

The application discloses a kind of tannin-based Mn-Fe diatomic metal polyphenol nano-carrier loaded hypocrellin B nano-assemblies and its preparation method and application.The nano-assemblies use tannin as ligand, by step coordination driven self-assembly strategy, first with Mn 2+ Forming pre-assembly template, then introducing Fe 3+ Constructing Mn-Fe diatomic metal polyphenol network with atomic level uniform dispersion, and loading traditional Chinese medicine source photosensitizer hypocrellin B to obtain nano-preparation.The preparation realizes Fe 2+ / Fe 3+ Self-circulation, and can sustainably catalyze H2O2 in tumor microenvironment to generate hydroxyl radical, realizes long-acting chemical kinetics treatment;Meanwhile, in-situ oxygen production relieves tumor hypoxia, improves photodynamic therapy effect, and consumes glutathione to amplify oxidative stress.The preparation process of the application is mild, and biocompatibility is good, and it breaks through the bottleneck of insufficient effect of traditional treatment in anoxic tumor.

This invention provides a Ganoderma lucidum seaweed ferment, its preparation method, and its applications, belonging to the field of microbial fermentation technology. This invention utilizes Ganoderma lucidum AD256 (accession number CCTCC NO: M 20252522) for fermentation in a Ganoderma lucidum fermentation medium containing seaweed to prepare the Ganoderma lucidum seaweed ferment. This invention simultaneously achieves efficient fermentation of Ganoderma lucidum and a highly active, economical, and environmentally friendly Ganoderma lucidum seaweed ferment by utilizing the promoting effect of seaweed powder on Ganoderma lucidum fermentation and the catalytic degradation of seaweed powder by Ganoderma lucidum. The Ganoderma lucidum seaweed ferment prepared by this invention exhibits excellent hygroscopic, moisturizing, antioxidant, and immunomodulatory activities, making it promising for broad market applications in cosmetics, feed, and food.

This invention discloses a detergent for removing milky odor and its preparation method, comprising the following components by weight percentage: 6-10 parts nutmeg extract, 2-3 parts phospholipase, 2-3 parts lipase, 3-5 parts α-amylase, 3-6 parts natural citric acid, 1-2 parts cyclodextrin, 0.5-1.5 parts dipotassium glycyrrhizate, 2-3 parts C8-16 alkyl glucoside, 2-3 parts C10-16 sodium polyoxyethylene ether sulfate, 1-2 parts aminopropylamine cocoate, and 1-2 parts sodium C10-16 alkylbenzene sulfonate. Through the synergistic effect of specific enzyme preparations (phospholipase, lipase, and α-amylase), it efficiently decomposes residual lipids and proteins in milk stains, thus fundamentally eliminating the milky odor. Simultaneously, the cyclodextrin encapsulation technology, natural citric acid, and green tea polyphenol extract further adsorb and neutralize odor molecules, achieving multiple effects of deodorization, anti-oxidation, and antibacterial properties.

The present application belongs to the field of nanometer carbon material preparation, discloses a kind of carbon quantum dots and preparation method thereof prepared by waste recovery, suitable for UV curing coating application, aims at solving the problems such as poor batch consistency of carbon dots prepared from waste and insufficient compatibility with coating, realizes the high value closed loop of electrochemical aluminum / transfer film waste coating waste material.The present application uses the waste coating waste material containing nitrogen polymer in the industry as raw material, after pre-classification and alkali alcohol mixed solvent pretreatment, hydrothermal carbonization and purification, surface modification is completed by UV photochemical grafting specific UV curing monomer, and 2-10nm nitrogen-doped graphene quantum dot powder is prepared;The process parameters such as hydrothermal and grafting are optimized, to realize the covalent bonding of carbon quantum dots and UV curing coating.The raw material of the present application is green and low cost, the batch consistency of the product is significantly improved, the compatibility and storage stability of the coating are greatly improved, and after adding, the fluorescence anti-counterfeiting and curing tracing of UV curing coating can be realized, which meets the requirements of double carbon target and new material industry development.

The application discloses a multifunctional optoelectronic logic gate device based on circularly polarized light and a preparation method and application thereof, comprising a bottom substrate, a bottom electrode, a chiral light-absorbing active layer, a top transparent electrode and a top transparent packaging layer which are sequentially stacked. The chiral light-absorbing active layer comprises lead-free chiral molecules, skeleton materials, carrier transport materials and stabilizers. The application utilizes the intrinsic differential response of chiral materials to left-handed and right-handed circularly polarized light to directly realize circularly polarized light detection on a single device. By synergistically regulating the polarization state, light intensity and / or external bias of incident light, the device can serve as a reconfigurable logic gate to output various binary or multi-value logic operation results. The application has the advantages of environmental friendliness and high stability, and realizes the integration of detection, logic and potential imaging functions. The device structure is simple, the preparation process is convenient, and the application has a wide application prospect in the fields of optical computing, information encryption and polarization imaging.

The application discloses a preparation method of a drug sustained-release hydrogel support and a three-dimensional osteogenic induction application of hiPSCs. Firstly, a CHIR99021@BSA-DEX@PLGA time-sequential double sustained-release composite microsphere of a core-shell structure is prepared, then the freeze-dried GelMA powder is dissolved in a PBS solution containing a photoinitiator LAP, the CHIR99021@BSA-DEX@PLGA time-sequential double sustained-release composite microsphere is added after stirring and cooling, and a drug-loaded hydrogel precursor is obtained; the precursor is injected into a mold and irradiated by a specific wavelength light source to initiate free radical polymerization of a methacryl group into glue, and a drug-loaded GelMA porous hydrogel support is obtained after demolding, freezing and drying; the drug-loaded GelMA porous support is covalently grafted with VN polypeptide through EDC / NHS chemical coupling to obtain a VN-GelMA drug-loaded porous hydrogel support. The application simulates the signal time sequence regulation law in the embryonic bone formation process and significantly improves the osteogenic differentiation efficiency and mineralization quality by constructing a biomimetic three-dimensional osteogenic microenvironment. The VN polypeptide enhances the specific recognition of stem cells and significantly improves the three-dimensional cell compatibility. The application can reduce the dependence on exogenous induction factors and is safe, low in cost and stable in induction.

This invention discloses a method for preparing a self-supporting alkaline water-splitting electrode material, belonging to the technical field of water electrolysis catalytic materials. Using high-porosity nickel foam as a self-supporting substrate, after surface pretreatment to remove impurities and oxide layers, a nickel-iron binary metal precursor nanosheet array is grown in situ on the substrate via a hydrothermal method. Then, a low-temperature phosphating modification combined with annealing crystallization process is used to prepare a nickel-iron-phosphorus oxide composite self-supporting water-splitting electrode material. This invention abandons the traditional binder molding process, ensuring a strong bond between the active components and the substrate, effectively reducing electrode interfacial impedance and enriching catalytic active sites. The synergistic effect of the nickel-iron bimetallic material and phosphating modification optimizes the electrode's electronic structure, giving the electrode excellent dual-function catalytic performance for hydrogen and oxygen evolution. It exhibits strong corrosion resistance and good cycle stability in strongly alkaline electrolytes. The preparation process of this invention is mild, simple to operate, highly reproducible, and low in production cost, enabling large-scale industrial production. The resulting electrode can effectively reduce energy consumption in alkaline water splitting and is suitable for various applications such as industrial green hydrogen preparation and water electrolysis energy storage, possessing broad market application prospects.

The application relates to the field of photoelectric material application science and technology, and discloses a low-dielectric-constant material which contains 25-50 parts by weight of fluorine-containing acrylate monomers, 1-5 parts by weight of polysilsesquioxane, 1-5 parts by weight of a photoinitiator and other functional auxiliaries. The fluorine-containing acrylate and the polysilsesquioxane have a synergistic effect, so that the dielectric constant of the material is significantly reduced; meanwhile, the material has excellent comprehensive properties such as viscosity, light transmittance, dielectric constant, flexibility, hardness and flatness; the production cost is low; the preparation process is mild; and the material is a medium material with excellent comprehensive properties.

This invention discloses a pH-responsive nanodiamond drug delivery system and its preparation method, belonging to the field of nanomedicine carrier technology. The delivery system uses polyglycerol-modified nanodiamond (NDPG) as the base carrier, covalently loading doxorubicin (DOX) via pH-sensitive hydrazone bonds, and combining it with hyaluronic acid (HA) to achieve targeted modification and surface-stabilized coating, ultimately forming an HA-DOX / NDPG composite system or an NDPG-DOX@HA core-shell structure. The preparation method includes: in-situ ring-opening polymerization grafting of polyglycerol onto the nanodiamond surface to obtain NDPG; activation of hyaluronic acid followed by coupling with adipic acid dihydrazide, then forming hydrazone bonds with doxorubicin to obtain HA-DOX; activation of NDPG followed by grafting of connecting arms, then coupling with doxorubicin to obtain NDPG-DOX, and finally coating with hyaluronic acid to obtain the core-shell product. The carrier of this invention exhibits good water dispersibility, stable drug loading rate, low drug leakage under physiological conditions, rapid drug release in the weakly acidic environment of tumors, and also possesses active targeting capability and good biocompatibility. It can be used to prepare highly effective and low-toxicity antitumor drugs, and has high clinical application and translational value.

This invention discloses a medical material for the prevention and treatment of oral ulcers, its preparation method, and its application. The medical material of this invention comprises a two-dimensional sheet-like nanomaterial composed of an organic matrix and metallic elements. The two-dimensional sheet-like nanomaterial of this invention possesses advantages such as high crystallinity, favorable material transport, high healing rate, reduced recurrence risk, excellent biocompatibility, mild preparation process, scalability, ease of use, and low cost, and has broad application prospects in the field of oral ulcer prevention and treatment.

The invention provides a preparation method of a modified phosphorus-carbon negative electrode material. The preparation method comprises the following steps: S1, placing a phosphorus-carbon material in a plasma etching instrument for plasma treatment activation; wherein the power of the plasma etching instrument is set to be 50 to 80 W; the air pressure is set to be 10-20 Pa, and the phosphorus-carbon material is placed in a plasma etching instrument at the room temperature to be treated for 3-5 minutes; s2, putting the phosphorus-carbon material activated and modified in the step S1 into an absolute ethyl alcohol solution of a thiol compound, stirring and mixing, and controlling the pH value of the mixed solution to be 7.5-8.0; the reaction time is 2-3 hours; and S3, carrying out centrifugal separation on a product obtained after the reaction in the step S2, washing the product with absolute ethyl alcohol for 3-5 times, and then carrying out vacuum drying to obtain the modified phosphorus-carbon negative electrode material. The phosphorus-carbon negative electrode material is modified by introducing a thiol compound, phosphorus carbon is modified by introducing a stable P-S covalent bond, phosphorus in the phosphorus-carbon material can be inhibited from being oxidized in the charging and discharging process, and the oxidation stability and the cycle performance of the phosphorus-carbon material are remarkably improved.

The invention belongs to the technical field of biological medicines and microorganisms, and particularly relates to an alpha-PD-L1 targeted nano-drug based on a parabacteroides coumarini membrane vesicle and a preparation method and application thereof.The nano-drug is prepared by taking a natural membrane vesicle derived from parabacteroides coumarini as a carrier, connecting an alpha-PD-L1 antibody to the surface of the carrier by adopting a chemical covalent method, and preparing the alpha-PD-L1 targeted nano-drug based on the parabacteroides coumarini membrane vesicle. The functionalized nano drug P-MVs / alpha-PD-L1 is formed; wherein the membrane vesicle carrier is obtained from a bacterial culture supernatant by combining gradient centrifugation with ultracentrifugation; in-vitro experiments show that the nano-drug can effectively inhibit malignant phenotypes such as proliferation, migration and invasion of breast cancer cells; animal in-vivo experiments prove that the nano-drug can significantly inhibit tumor growth and shows good biological safety; in conclusion, the alpha-PD-L1 targeted nano-drug provided by the invention has the advantages of a natural carrier and an immune targeting function, and has a definite application value in the field of breast cancer treatment.