17 results about "Zro2 nanoparticles" patented technology

The invention discloses a super-hydrophobic heat insulation / radiation refrigeration integrated fabric and a preparation method thereof.The method comprises the steps that firstly, a heat insulation layer is constructed on a base fabric through electrostatic spraying, specifically, PU and SCA are dissolved in DMF, SiO2 aerogel is added to form spraying liquid, a three-dimensional network structure is formed between aerogel and fibers through the synergistic cross-linking effect of SCA and PU, the aerogel is firmly anchored, and the heat insulation layer is formed; the adhesive force and the washability of the coating are improved. PVDF-HFP and ZrO2 nano-particles are blended and spun to form a composite structure with nano-fibers wrapping ceramic particles, particle aggregation is avoided, and the radiation refrigeration and heat insulation performance of PVDF-HFP and ZrO2 nano-particles are synergistically exerted. Finally, a substrate-heat insulation-refrigeration three-dimensional composite structure is formed through hot pressing treatment, chemical bonding of all the layers is achieved through SCA, the fabric has the characteristics of high strength, abrasion resistance, hydrophobicity, heat insulation and radiation refrigeration, and the problem that durability and comfort of a traditional material are difficult to achieve at the same time is solved.

Disclosed is a composition that is substantially solvent-free, UV curable, has a viscosity of from 10 mPa * s to less than 25 mPa * s at 25 DEG C, and contains: (a) an aromatic (meth) acrylate-based material having the structure (I): H2C = C (R1) C (O)-O-R2-CH2-R (I) wherein: R is a biphenyl or naphthyl group; r1 is hydrogen or a methyl group; r2 is a single bond, a C2-10 divalent hydrocarbon, a C2-10 polyethylene or a C3-10 polypropylene; (b) from 10 wt% to 25 wt% of a bifunctional methyl acrylate having the structure (II): H2C = C (CH3) C (O)-O-R3-O-C (O) C (CH3) = CH2 (II) wherein R3 is a single bond, a C2-10 divalent hydrocarbon, a C2-10 polyethylene or a C3-10 polypropylene; (c) ZrO2 nanoparticles having a concentration of 1 nm to 20 nm in the range defined by (i) 1.23 (wt% bifunctional methyl acrylate (b)) + 1.60 wt%; and (ii) 1.09 (wt% of a bifunctional methyl acrylate (b)) + 26.02 wt%; (d) 0.1 wt% to 6.0 wt% of a photoinitiator; (e) from 0 wt% to 6.0 wt% of a trifunctional methyl acrylate; and (f) from 0 wt% to 1.0 wt% of a surfactant; wherein the wt% is relative to the weight of the composition.

The invention discloses an oil-resistant fluorine-containing rubber sealing element and a preparation method thereof, and belongs to the technical field of fluorine-containing rubber, the oil-resistant fluorine-containing rubber sealing element is prepared by the following steps: stirring Na-montmorillonite and graphene oxide, performing ultrasonic treatment to obtain graphene intercalated montmorillonite powder, performing hydrophobic modification on the graphene intercalated montmorillonite powder through hydrothermal loaded CeO2 / ZrO2 nanoparticles and a titanate coupling agent, and then adding an antioxidant to obtain the oil-resistant fluorine-containing rubber sealing element. The preparation method comprises the following steps: modifying composite montmorillonite to obtain modified composite montmorillonite, then premixing the modified composite montmorillonite and F26 type fluorine-containing rubber to obtain composite fluorine-containing rubber, mixing the composite fluorine-containing rubber with fumed silica, a plasticizer F-20, active magnesium oxide, calcium hydroxide and phenolic resin SP-1055, and performing two-step vulcanization to obtain the oil-resistant fluorine-containing rubber sealing element. High tensile strength, excellent normal-temperature and high-temperature oil resistance, high tensile strength thermal aging retention rate and good sealing durability of the sealing element are realized.

This invention relates to the field of battery separators, and discloses a semi-solid-state battery composite separator and its preparation method, comprising a base film and a nanoparticle-reinforced PEO layer and an LATP layer sequentially coated on the surface of the base film; the raw materials for the nanoparticle-reinforced PEO layer include ZrO2@polyetheramine core-shell nanoparticles and PEO in a mass ratio of 1~3:1; the ZrO2@polyetheramine core-shell nanoparticles are prepared by a solvent-free nanofluidic method, with ZrO2 nanoparticles as the core and polyetheramine as the shell, and the mass ratio of ZrO2 nanoparticles to polyetheramine is 1:5~20. This invention, by sequentially coating the separator surface with an LATP layer and a PEO layer reinforced by ZrO2@polyetheramine nanoparticles, can effectively improve the ionic conductivity of the polyethylene separator, reduce the amount of electrolyte used, and also improve the heat resistance and safety stability of the base film.

This invention relates to the field of metal surface treatment technology, and in particular to a corrosion-resistant and wear-resistant coating for firearm compression springs. The invention discloses a corrosion-resistant and wear-resistant coating for firearm compression springs, which is formed by adding graphene, ZrO2 nanoparticles and modified boron nitride to chromium-free Dacromet, followed by powder surface treatment and step curing process to form a composite coating. This coating has high corrosion resistance, wear resistance and environmental protection characteristics, and is suitable for surface protection of high-load firearm components.

This invention discloses a surface-modified composite fiber filter membrane, its preparation method, and its application, relating to the field of insulating oil filtration. The preparation method involves uniformly stirring PVA powder, solvent, and ZrO2 nanoparticles to obtain a spinning solution; then, using electrospinning technology, a composite fiber filter membrane is prepared from the spinning solution, which can be applied to the filtration and purification of mineral insulating oil. This application utilizes electrospinning technology to prepare the filter membrane, which has advantages such as small fiber diameter, good uniformity, high porosity, and high flux. Introducing ZrO2 nanoparticles into the filter membrane increases the specific surface area, providing impurity adsorption and effectively adsorbing and intercepting trace amounts of moisture and micro-impurities in aged mineral insulating oil. This achieves precise filtration of aged mineral insulating oil, effectively improving its breakdown voltage and reducing resource waste and environmental pollution.

The invention relates to the field of battery diaphragms, and discloses a semi-solid-state battery composite diaphragm and a preparation method thereof, the semi-solid-state battery composite diaphragm comprises a base membrane, and a nanoparticle reinforced PEO layer and an LATP layer which are sequentially coated on the surface of the base membrane; the nano-particle reinforced PEO layer is prepared from the following raw materials: ZrO2 at polyether amine core-shell nano-particles and PEO in a mass ratio of (1-3): 1; the ZrO2 and polyether amine core-shell nanoparticles are prepared by a solvent-free nanofluid method, ZrO2 nanoparticles are taken as cores, polyether amine is taken as a shell layer, and the mass ratio of the ZrO2 nanoparticles to the polyether amine is 1: (5-20). The surface of the diaphragm is sequentially coated with the LATP layer and the PEO layer reinforced by ZrO2 and polyether amine nanoparticles, so that the ionic conductivity of the polyethylene diaphragm can be effectively improved, the use amount of electrolyte is reduced, and meanwhile, the heat resistance, safety and stability of a base membrane can be improved.

The invention relates to the technical field of composite material coating preparation, and discloses a method for rapidly preparing a SiO2 coating on the surface of a C / C composite material, and the method comprises the following steps: S1, carrying out matrix pretreatment on the C / C composite material to improve the surface wettability; s2, depositing an energetic film on the surface of the product obtained in the step S1; and S3, coating the surface of the product obtained in the step S2 with a SiO2 precursor, coating the SiO2 precursor with ZrO2 nanoparticles, and then igniting the energetic film to obtain the SiO2 coating. The preparation method of the coating is economical and efficient, the compactness of the obtained coating reaches 98.5%, and the problem of matrix thermal damage of the composite material is effectively avoided.

The invention discloses a process and equipment for preparing a TOPCon photovoltaic cell and glass dust deposition prevention and high light transmission dual-function coating liquid, and relates to the technical field of solar cell manufacturing, the coating liquid comprises S < 2 > nano-particles, ZrO2 nano-particles, T < 2 > nano-particles and a surfactant, the surfactant is a perfluoropolyether surfactant and accounts for 0.5% of the total solution mass, and the sum of the mass percentages of the S < 2 > nano-particles, the ZrO2 nano-particles, the T < 2 > nano-particles and the surfactant is 100%. According to the coating liquid prepared through the technology, the surface energy is extremely low after the coating liquid is cured through the synergistic effect of the surfactant and the TiO2, dust attachment is remarkably reduced, surface organic matter can be decomposed through the photocatalytic characteristic of the TiO2 nanoparticles, self-cleaning can be achieved through rain wash, and the coating liquid has the high light transmittance performance and is suitable for being used in the field of light emitting devices. According to the coating liquid, through nano-particle dispersion optimization, multi-layer structure design and accurate pH regulation and control, synergistic interaction of dust deposition prevention and high light transmittance functions is achieved, and meanwhile the coating liquid has excellent weather resistance and construction adaptability.

The invention provides a conductive molecular sieve-CuO-ZrO2 composite catalyst as well as a preparation method and application thereof, and belongs to the technical field of methane electrocatalytic oxidation. The conductive molecular sieve-CuO-ZrO2 composite catalyst comprises a conductive molecular sieve, CuO nanoparticles and ZrO2 nanoparticles, wherein the conductive molecular sieve is composed of a molecular sieve and carbon modified in the molecular sieve, and the CuO nanoparticles and the ZrO2 nanoparticles are located on the conductive molecular sieve. The conductive molecular sieve-CuO-ZrO2 composite catalyst disclosed by the invention can be applied to the methane electrocatalytic oxidation process, is beneficial to providing relatively strong methane adsorption capacity, and promotes the adsorption and activation of methane molecules on the surface of the composite catalyst in the reaction process, so that the yield of ethanol prepared by methane electrocatalytic oxidation is further improved.

The invention discloses a copper-based composite material based on oxide dispersion strengthening and a preparation method. The preparation method comprises the following steps: respectively pretreating Al powder and Cu powder; the pretreated Al powder, the pretreated Cu powder, the pretreated Cr powder, the pretreated Fe powder, the pretreated Mn powder, the pretreated Ti powder and the pretreated Y powder are subjected to ball milling, meanwhile, ZrO2 nanoparticles are introduced to serve as additional dispersed phases, and copper-based supersaturated solid solution-nanometer Al2O3 / ZrO2 composite powder is obtained after ball milling; sintering the composite powder to obtain an SPS blank; and the SPS blank is subjected to multi-stage deformation heat treatment, and the copper-based composite material is obtained. According to the preparation method, the supersaturated solid solution, the in-situ generated nano oxide and the external aid nano oxide are combined in the copper matrix through mechanical alloying, and then the microstructure is precisely regulated and controlled through SPS and multi-stage deformation heat treatment; and the comprehensive properties such as high strength, high hardness, excellent electric conductivity and thermal conductivity, good high-temperature stability and the like can be improved.

The invention discloses a wide-spectrum infrared emission transparent thermal control coating for a spacecraft, a preparation method of the wide-spectrum infrared emission transparent thermal control coating and an optical device. The wide-spectrum infrared emission transparent thermal control coating comprises a transparent polymer matrix as well as modified SiO2 nanoparticles, modified ZrO2 nanoparticles and boron nitride nanosheets which are dispersed in the matrix. Based on 100 parts by mass of the transparent polymer matrix, the addition amount of the modified SiO2 nanoparticles is 0.1 to 5 parts, the addition amount of the modified ZrO2 nanoparticles is 0.1 to 3 parts, and the addition amount of the boron nitride nanosheets is 0.1 to 2 parts. Preferably, the modified ZrO2 nano particles are subjected to MgO doping treatment. According to the coating, through the synergistic effect of the three nanofillers, high light transmittance is kept, meanwhile, an infrared emission window is expanded to a wide spectrum region of 8-20 microns from traditional 8-14 microns, and the coating has good mechanical properties.

The present application relates to modified seaweed residue-based filter membrane and its preparation and application for removing pollutants, wherein industrial waste seaweed residue is used as raw material, and graphene oxide is used as modifier, after mixing seaweed residue and graphene oxide and fully stirring, ZrO2 nanoparticles are biomimetic mineralized on the graphene oxide loaded seaweed residue hybrid, and the functional GO / seaweed residue-ZrO2 hybrid membrane is prepared by vacuum filtration method, the composite membrane has good adsorption and removal performance on fluoride, heavy metal ions and radioactive elements in water body, and the composite membrane also has excellent antibacterial effect.

The invention provides a high-wear-resistant high-temperature-resistant solid lubricating coating which is of a three-layer structure and comprises a transition strengthening layer, a lubricating layer and an anti-oxidation protection layer, the transition strengthening layer comprises a TiN-TiC gradient layer and a carbon nano tube layer perpendicular to the TiN-TiC gradient layer, the lubricating layer uses WS2 and MoS2 to construct a heterojunction substrate, and the anti-oxidation protection layer is arranged between the transition strengthening layer and the carbon nano tube layer. LaF3-CeF3 is doped in situ to be compounded with rare earth fluoride, and the anti-oxidation layer is formed by adopting Si3N4-Al2O3 to be compounded with a ceramic phase and doped with ZrO2 nanoparticles coated with graphene. According to the method, the gradient deposition route is designed through the design of three layers of different structures and fusing the magnetron sputtering technology, the ion implantation technology and the PECVD technology, the problems that the interface bonding of a multi-layer structure is poor, and component distribution is uneven are solved, and the method is suitable for preparing parts in complex shapes.

The invention provides an organic-inorganic hybrid light-cured optical resin composition with high refractive index and low haze as well as a preparation method and application of the organic-inorganic hybrid light-cured optical resin composition. The composition comprises the following components in percentage by mass: 45-60 wt% of aromatic thioether acrylate; the coating is prepared from the following components in percentage by weight: 20 to 30 percent of ZrO2 nano particles of which the surfaces are acrylated, 10 to 15 percent of ORMOSIL precursors, 5 to 10 percent of alicyclic reactive diluents, 0.8 to 1.5 percent of photoinitiators and 0.2 to 0.5 percent of dispersing agents. Gradient refractive index matching of inorganic particles and an organic matrix is achieved through core-shell structure design, the visible light transmittance of a cured sample is larger than or equal to 92%, the haze is smaller than or equal to 0.5%, the pencil hardness reaches 3H, and the transparent wear-resistant coating can be applied to the field of transparent wear-resistant coatings of optical lenses, display panels and the like.

The invention relates to the technical field of photoresist, and discloses ZrO2 nano particle doped negative photoresist and a preparation method thereof. The negative photoresist comprises an acrylate photoresist matrix and modified ZrO2 nanoparticles dispersed in the acrylate photoresist matrix, the modified ZrO2 nano particles are ZrO2 nano particles of which the surfaces are grafted with oxalic acid and an acrylate silane coupling agent. The negative photoresist disclosed by the invention has a relatively high resolution ratio in an ultraviolet lithography process, and a pattern formed after ultraviolet lithography has a relatively high refractive index.

The application relates to the technical field of composite material coating preparation, and discloses a method for rapidly preparing a SiO2 coating on the surface of C / C composite material, which comprises the following steps: step S1, carrying out base pretreatment on the C / C composite material to improve the surface wettability; step S2, depositing an energy-containing film on the surface of the product obtained in step S1; step S3, coating SiO2 precursors on the surface of the product obtained in step S2, coating ZrO2 nanoparticles on the SiO2 precursors, igniting the energy-containing film, and obtaining the SiO2 coating. The coating preparation method is economical and efficient, the obtained coating has a density of 98.5%, and the base thermal damage problem of the composite material is effectively avoided.