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Thermal decomposition preparation process of hafnium carbide precursor
PendingCN122079161Aevenly dispersedImprove uniformityMaterial nanotechnologyCarbon compoundsMethacrylateAcrylonitrile
This invention relates to the field of hafnium carbide technology and discloses a thermal decomposition preparation process for hafnium carbide precursors. The process includes: dissolving hafnium tetrachloride in anhydrous ethanol, adding propylene oxide dropwise for neutralization and acid removal to obtain a neutral ethanol-hafnium precursor solution; adding ethyl acetoacetate methacrylate and heating for coordination to obtain a hafnium coordination monomer solution; adding acrylonitrile and an initiator and heating for polymerization; when the viscosity of the reaction solution increases, injecting a dimethyl sulfoxide hot solution of melamine as a locking liquid; precipitating, separating, and drying to obtain the hafnium carbide precursor; and after oxidative crosslinking treatment, calcining at high temperature under an inert atmosphere to undergo carbothermic reduction to obtain hafnium carbide powder. This invention achieves molecular-level dispersion of precursor components through liquid-phase coordination and in-situ network locking, effectively reducing the reaction temperature and inhibiting grain agglomeration, thus producing high-purity, ultrafine hafnium carbide powder.
Owner:FORSMAN TECH (BEIJING) CO LTD
A health-care patch for treating neck-shoulder-lumbar-leg pain and a preparation method thereof
PendingCN122251505Areduce polarityavoid separabilityAnthropod material medical ingredientsAntipyreticNeck shoulderPharmaceutical drug
The present application relates to the technical field of external use patch, disclose a kind of neck shoulder waist leg pain health care patch and its preparation method, the health care patch includes backing layer, ointment layer and anti-adhesion release layer;Ointment layer raw material includes: traditional Chinese medicine extract flow leaching paste, L- (+) -tartaric acid, PVP K30, PEG-400, ternary eutectic solvent, polyacrylate pressure sensitive adhesive matrix and ultrafine medicinal powder.Preparation, after flow leaching paste, tartaric acid etc. are mixed, gel precursor is formed by vacuum dewatering and dealcoholization, swelling is added again with eutectic solvent, and then mixed with pressure sensitive adhesive matrix and medicinal powder high shear, finally coating solidification.The present application constructs physical crosslinking gel network in colloid interior and promotes effective component acid-base salt formation, effectively avoids polar component crystallization precipitation, reduces the skin irritation caused by drug burst release, simultaneously improves the cohesion of ointment, realizes long-acting smooth drug release.
Owner:HENAN RUNLING PHARM CO LTD
Modified photocurable oligomers and methods of making the same and photocurable 3d printing resins
This application provides a modified photocurable oligomer, its preparation method, and a photocurable 3D printing resin. The preparation method of the modified photocurable oligomer includes the following steps: providing an acrylic monomer, a triblock thermoplastic elastomer, a coupling agent, and a polyurethane acrylate; dissolving the triblock thermoplastic elastomer in the acrylic monomer to obtain a block copolymer mixed solution; adding the coupling agent to the block copolymer mixed solution to obtain a modified block copolymer mixed solution; adding the polyurethane acrylate to the modified block copolymer mixed solution, and mixing to obtain the modified photocurable oligomer. The modified photocurable oligomer, its preparation method, and the photocurable 3D printing resin provided in this application use a triblock thermoplastic elastomer as a toughening reinforcing phase, and chemically modify its surface using a coupling agent, enabling it to form a strong chemical bond interface with the polyurethane acrylate after pre-dispersion in the acrylic monomer.
Intrinsic fluorescent polyester elastomer and method for preparing the same
This invention relates to an intrinsically fluorescent polyester elastomer and its preparation method. The elastomer is copolymerized from vanillin-based aldehyde monomers with small-molecule cyano monomers and cyano-terminated polyethers or polyester diols via a Knoevenagel polycondensation reaction. By adjusting the molar fraction of the soft segment, a continuous transition from rigid fluorescent plastics to highly elastic fluorescent polyester elastomers can be achieved. The resulting material exhibits both high fluorescence quantum yield and high elongation at break, and can be applied in fields such as melt spinning, fluorescent anti-counterfeiting, and flexible optoelectronic devices.
Owner:SICHUAN UNIV
A tilting duct with an asymmetric structure and an aircraft
PendingCN122078616AOffset loadIncrease the load-to-weight ratioPropellersRotocraftFlight vehicleClassical mechanics
This invention provides an asymmetrical tilting duct, belonging to the field of aircraft technology, including a duct shell. The duct shell is a non-closed arc structure along the circumferential direction, and the duct shell has a non-closed opening section on its circumference. The cross-section of the opening section is an airfoil with inverted upper and lower arcs. By designing the duct shell as a non-closed arc structure and setting a non-closed opening section with an inverted airfoil cross-section on its circumference, this invention breaks the symmetrical distribution of circumferential air pressure in the duct, forming a circumferential pressure difference that cannot be completely offset. This allows the duct to generate additional radial lift along the vertical direction of the fuselage while providing axial thrust, effectively offsetting part of the wing load and improving the aircraft's payload ratio.
Owner:HARBIN ENG UNIV
A two-phase solid-state electrolyte powder and a method of preparing the same
This invention relates to the field of solid-state battery technology and discloses a dual-phase solid electrolyte powder and its preparation method. The dual-phase solid electrolyte powder is a uniform composite of LATP (lithium aluminum titanium phosphate) and LLZTO (lithium lanthanum zirconium tantalum oxide), with a LATP to LLZTO weight ratio of 1:2 to 2:1, a particle size of 1 to 3 μm, and an ionic conductivity ≥2.3 × 10⁻⁶. ‑ ³S / cm. Its preparation method includes LATP precursor solution preparation, slurry preparation, spray pyrolysis, and high-temperature calcination steps. This invention, through the synergistic effect of a two-phase structure, combines the high bulk ionic conductivity of LATP with the good interfacial stability of LLZTO, effectively reducing interfacial impedance and suppressing Ti in LATP. 4+ The reduction reaction improves lithium-ion transport efficiency and cycle stability. Batteries using this electrolyte can achieve an initial discharge capacity of over 176 mAh / g, retain ≥88% capacity after 200 cycles, and exhibit excellent safety performance, making it widely applicable to various solid-state lithium-ion batteries.
Owner:KUNSHAN BLACK ROCK NEW MATERIAL TECH CO LTD
A type of warm down comforter
ActiveCN224307096Uavoid accumulationIncrease warmthBlanketBed linenStructural engineeringMechanical engineering
Owner:HANGZHOU JOYCE HOUSEHOLD TEXTILES CO LTD
A pyridine-imine type metal complex, its preparation method and application
PendingCN122080087Aavoid separabilityAvoid purification stepsSilicon organic compoundsOrganic-compounds/hydrides/coordination-complexes catalystsCombinatorial chemistryHydrosilylation
This invention relates to a pyridine-imine type metal complex, its preparation method, and its applications. The pyridine-imine type metal complex is an NNN-pyridine-imine type metal complex or an NN-pyridine-imine type metal complex; its structural formula is shown in Formulas 1-4. The pyridine-imine type metal complex and its preparation method described in this invention, as well as its application in hydrosilylation and silanization reactions, allow for the one-pot synthesis of the desired metal complex. The preparation method is simple and low-cost, eliminating the cumbersome separation steps in traditional two-step methods, significantly reducing reaction time, increasing the maximum yield to over 95%, and exhibiting high catalytic activity and selectivity in hydrosilylation and silanization reactions.
Owner:SHIHEZI UNIVERSITY +2
A weather-resistant one-coat paint and a method for preparing the same
ActiveCN121537838BGood antibacterial effectImprove flame retardant performanceGroup 4/14 element organic compoundsFireproof paintsWeather resistanceOrganic solvent
The present application relates to the technical field of paint, and especially relates to a weather-resistant one-coat paint and a preparation method thereof. The paint comprises component A and component B; the mass ratio of the component A to the component B is (25-30):3; according to weight parts, the component A comprises the following raw materials: 20-30 parts of hydroxyl acrylic acid resin, 10-20 parts of organic solvent, 25-35 parts of pigment, 5-15 parts of flame retardant, 1-5 parts of modified graphene and 1-4 parts of additive; and the component B is a solution of aliphatic polyisocyanate. The paint has excellent bacteriostasis, flame retardation, weather resistance and corrosion resistance.
Owner:HUNAN ZIXIAN NEW MATERIAL CO LTD
Forging cooling device
The utility model relates to a forging cooling device, including cooling box and the net frame of placing, the top of net frame of placing is equipped with the removal part, the removal part is used for driving net frame of placing to move to the vertical axial movement of cooling box, both sides of net frame of placing are equipped with the back shape drying frame, two groups back shape drying frame can move towards net frame of placing or move away, the inboard of back shape drying frame evenly installs several nozzles, the outside of back shape drying frame installs the hot -blast machine, the air outlet end of hot -blast machine is linked together with back shape drying frame through the pipeline, sets up solenoid valve on the pipeline, can be injected airflow to forging from multi -angle through the utility model, cooperate the airflow circulation design of air hole, ensure that forging cooling and drying are even, reduce the deformation or performance difference because of the temperature uneven.
Owner:ANHUI LINHONG HEAVY IND TECH CO LTD
Integrated micro permanent magnet direct drive generator
This invention relates to the field of micro-power generation technology, and more particularly to an integrated micro permanent magnet direct-drive generator. The generator includes: a duct housing, a turbine, a permanent magnet power generation unit, a flow field monitoring module, and a control unit. This invention designs the inner wall of the duct as a composite curved surface with a specific helical waveform and axial contraction, precisely matching its key shape parameters with the aerodynamic design point of the turbine. This allows the airflow to be accelerated by the Venturi effect as it passes through the duct, and further endowed with tangential momentum consistent with the turbine's rotation direction by a controllable helical bulge structure. Simultaneously, based on real-time monitoring of the outlet swirl intensity and load closed-loop control, the optimal aerodynamic matching state is dynamically maintained. Furthermore, monitoring of characteristic pressure distribution enables early warning of duct performance degradation, effectively solving the problem of reduced power generation efficiency caused by mutual interference of airflows due to the use of multiple parallel independent flow guiding mechanisms.
Owner:BEIDOU ROAD AIRLINES (BEIJING) TECHNOLOGY CO LTD
A method for detecting line corridor anomalies in frigid regions based on cross-scale gradient field sensing operators
PendingCN122135214AImprove the accuracy of abnormal movement recognitionimprove accuracyCharacter and pattern recognitionAnomaly detectionComputer vision
This invention relates to a method for detecting line corridor anomalies in frigid regions based on a cross-scale gradient field sensing operator, and pertains to the field of line corridor anomaly detection technology. The invention aims to address the problem of low accuracy in existing line corridor anomaly detection methods. The invention includes: acquiring a multi-band remote sensing image to be tested; invoking a gradient field convergence characteristic operator and an anomaly sensing model to obtain an anomaly sensing map of the multi-band remote sensing image; the anomaly sensing model is obtained through the following method: inputting a sample table; invoking the gradient field convergence characteristic operator to obtain the gradient field convergence characteristic vector of the sample; and training a support vector machine classification model using the gradient field convergence characteristic vector and the sample state to obtain the anomaly sensing model. This invention is used to detect whether anomalies have occurred in a line corridor.
Owner:CHANGCHUN INST OF TECH
Camera decoration assembly, processing method thereof and electronic equipment
The invention relates to a camera decoration assembly, a processing method thereof and electronic equipment, and the processing method of the camera decoration assembly comprises the steps that a decoration component is provided, the decoration component comprises a ceramic decoration part and a plastic decoration part which are combined, and the ceramic decoration part comprises a first surface and a second surface which are opposite to each other; the plastic decorative part is connected with the first surface; the decoration component is subjected to pre-vacuumizing treatment; and forming an effect appearance layer on the second surface of the ceramic decoration part to obtain the camera decoration assembly. In the process of forming the effect appearance layer on the second surface of the ceramic decoration part, miscellaneous gas or impurities released from the plastic decoration part are prevented from being attached to the first surface, so that the binding force between the effect appearance layer and the ceramic decoration part is effectively improved, and the effect appearance layer is prevented from being separated from or falling off from the ceramic decoration part; the yield of the camera decoration assembly is improved, and the reliability of the electronic equipment is improved.
Owner:BEIJING XIAOMI MOBILE SOFTWARE CO LTD
Centrifugal fan and electronic device
PendingCN122083006Aincrease air volumeeasy accessPump componentsRadial flow pumpsFan bladeElectric devices
This application provides a centrifugal fan and electronic device, relating to the field of fan technology. The centrifugal fan provided by this application includes: a volute housing, including an air inlet surface along its own axial direction; fan blades disposed within the volute housing; a first air outlet located on a first sidewall in the radial direction of the volute housing; and an air inlet located on the air inlet surface and directly opposite the fan blades. The edge of the air inlet is constructed as an annular inclined surface formed by splicing multiple arc-shaped inclined surfaces. At least two of the multiple arc-shaped inclined surfaces have different inclination angles. The multiple arc-shaped inclined surfaces include a first arc-shaped inclined surface, which corresponds to the first air outlet along the radial direction of the fan blades. The inclination angle of the first arc-shaped inclined surface is greater than or equal to 120° and less than or equal to 130°, and the inclination angle is the angle between the arc-shaped inclined surface and the air inlet surface. This application provides a centrifugal fan and electronic device that can improve air intake efficiency and reduce noise.
Owner:XIAN YIPU COMM TECH
A method for manufacturing high far-infrared emission therapy glasses
This invention relates to the field of polymer materials technology and discloses a method for manufacturing high far-infrared emission therapeutic glasses. The method includes: performing double-layer surface modification on far-infrared negative ion functional powder to obtain modified functional powder compatible with a polymer matrix; pre-dispersing and melt-blending the modified functional powder with a polymer matrix material in steps to obtain a blend; forming a functional powder enrichment region on the surface of the glasses by injection molding and applying a segmented electric field; polarizing the region based on the thickness of the enrichment region using a formula to determine the polarization electric field strength; and simultaneously performing radiation crosslinking treatment to anchor the crosslinked network to an oriented structure. This invention solves the technical problems of uneven functional powder dispersion and poor electret stability, achieving a synergistic effect of surface functional enrichment and long-lasting electret effect. The prepared glasses have durable and stable far-infrared emission and negative ion therapeutic functions.
Owner:GUANGZHOU BASTO GLASSES CO LTD
Multifunctional antibacterial and mildew-proof soybean protein composite adhesive and preparation method thereof
PendingCN122255944AImprove water wet shear strengthavoid damageNon-macromolecular adhesive additivesProtein adhesivesAdhesivePhytic acid
The application relates to the technical field of composite adhesive preparation, and discloses a multifunctional antibacterial and mildew-proof soybean protein composite adhesive and a preparation method thereof. Raw materials of the adhesive include soybean defatted soybean meal powder, urea, dicyandiamide, zinc sulfate heptahydrate, glycerol-boric acid ester complex pre-polymer liquid, water-based polyamide polyamine epichlorohydrin resin, phytic acid aqueous solution and sodium hydroxide aqueous solution. In the preparation, the protein is first uncoiled under the conditions of alkalinity and heating, and then zinc source and dicyandiamide are added; the system is adjusted to weak acidity by using phytic acid, long-acting antibacterial microzones are constructed by in-situ anchoring of zinc ions; glycerol-boric acid ester pre-polymer liquid is further added to inhibit early crosslinking at room temperature; and finally, crosslinking resin is mixed. The zinc ion catalyzes the ring-opening crosslinking of dicyandiamide, and the phosphorus-nitrogen-boron multi-element synergistic flame-retardant mechanism is utilized, so that the water-wet shear strength, limiting oxygen index and long-acting mildew-proof capability of the glued product are improved, and the room-temperature application period of the adhesive is effectively prolonged.
Owner:YANCHENG INST OF IND TECH
A multi-directional displacement comb plate expansion joint device
The utility model discloses a kind of multi-directional displacement comb tooth plate expansion joint device, including the movable comb steel plate and fixed comb steel plate of comb tooth end mutual intersection, further including elastic displacement structure, including elastic displacement box, reinforcing steel plate and displacement assembly, the elastic displacement box is fixed between the other end of movable comb steel plate and first beam body, several convex reinforcing steel plates are linearly arrayed and arranged in vertical direction in elastic displacement box, between the vertical end of elastic displacement box and the horizontal end of reinforcing steel plate both sides, and between the horizontal end of adjacent reinforcing steel plate top, it is connected with several displacement assemblies. In the utility model, by integrating elastic displacement structure, comb tooth plate structure, waterproof sealing system and reinforcing connection structure, efficient and stable operation of bridge expansion joint under complex load and environment is realized, and the problems of poor transverse displacement adaptability, easy damage and weak waterproof performance of traditional comb tooth expansion joint are solved.
Owner:HENGSHUI LIANHAI NEW MATERIAL TECHNOLOGY CO LTD
Gas-liquid mixed transport synchronous self-priming pump structure
The utility model discloses a kind of gas-liquid mixed transmission synchronous self-priming pump structure, belong to self-priming pump technical field, comprising: centrifugal pump, its front end is provided with siphon tank, several steady flow baffle are provided in the siphon tank, exhaust port and water filling port are provided on the siphon tank, the siphon tank bottom is provided with drainage tube, liquid discharge pipe and liquid delivery pipe, the liquid delivery pipe is connected in the centrifugal pump water inlet;And gas-liquid separation chamber, it is connected at the centrifugal pump outlet.The utility model is by being provided with siphon tank, so that every time before starting does not need special water diversion operation, and also can achieve pump and simultaneously realize to send medium, ordinary self-priming pump after starting pump can only empty air and not self-priming time of water.
Owner:HUIMAO ELECTRONIC COMPONENT KUNSHAN CO LTD