18 results about "Tio2 coating" patented technology

The invention discloses an aluminum electrolytic capacitor composite oxide film suitable for a hydrogen fuel cell and a preparation method, and belongs to the technical field of aluminum electrolytic capacitors. The preparation method comprises the following steps: sequentially carrying out surface cleaning, neutralization, formation and activation pretreatment on a high-purity aluminum foil to prepare a surface-activated Al2O3 base film; the preparation method comprises the following steps: selecting tetrabutyl titanate as a titanium source, mixing a solvent, a chelating agent and a hydrolytic agent according to a preset molar ratio, stirring, modifying with a coupling agent, and performing ultrasonic dispersion to prepare TiO2 sol; coating the TiO2 sol on the surface of the Al2O3 base film by adopting a dip-coating process to form a wet film; and the wet film is converted into an anatase type TiO2 coating through segmented sintering, and the Al2O3-TiO2 composite oxide film is obtained. The composite oxide film comprises an Al2O3 base film and an anatase type TiO2 coating which are sequentially compounded, and the interface is tightly combined without gaps. Through material compounding and process optimization, the composite oxide film has the characteristics of low dielectric loss, high breakdown voltage, high humidity resistance and vibration resistance, adapts to the harsh working condition of a hydrogen fuel cell, and improves the service life and stability of a capacitor.

An advanced air disinfection and purification system integrating a UVC chamber with TIR lens optics and photocatalytic oxidation using titanium dioxide (TiO2) with PTFE. The UVC chamber is designed to maximize germicidal efficiency through reflective surfaces and focused UVC light. The TiO2 coating on the chamber's interior surfaces generates reactive oxygen species upon exposure to UVC light, effectively degrading pathogens and pollutants. The system is adaptable for integration into existing HVAC systems or as a standalone unit, offering enhanced air quality with minimal maintenance.

The application relates to the field of coating materials, and discloses a pure titanium material coating sensor for detecting low-concentration ammonia gas as well as a preparation method and application of the sensor. The sensor comprises a pure titanium material, a micro-arc oxidation coating and an electrode; the micro-arc oxidation coating is arranged on the surface of the pure titanium material through micro-arc oxidation of a sodium silicate, sodium stannate trihydrate and zinc acetate electrolyte; and the electrode is arranged on the micro-arc oxidation coating. The SnO2 / TiO2 coating capable of being applied to the detection of low-concentration ammonia gas under a high-humidity environment is formed on the surface of the pure titanium material through micro-arc oxidation of the composite electrolyte of sodium silicate, zinc acetate and sodium stannate trihydrate; the electrode is arranged, and the oxygen adsorption-desorption principle is utilized for detection; compared with conventional gases, the sensor exhibits excellent sensitivity and selectivity to ammonia gas, and therefore can effectively, timely and simply detect ammonia gas.

A sanitizer has substrates which are coated with an optically-activated nanomaterial TiO2 coating for cleaning air which comes into contact with the surfaces of the coating. UV LED light sources are arranged to emit light to be incident on the surfaces to activate the coatings. There is a large surface for impingement of air on the coatings due to a grille arrangement of the substrates, and the LED-emitted UV light being incident at acute angles on the grille honeycomb structure.

The invention discloses silicon-germanium fluorescent powder prepared from germanium tetrafluoride and application of the silicon-germanium fluorescent powder in an LED (light-emitting diode), and relates to the technical field of luminescent materials. The general chemical formula of the silicon-germanium fluorescent powder is Ca2 (Si < 0.6 > Ge < 0.4 >) O4: xLa < 3 + >, yEr < 3 + >, zYb < 3 + > (at) ZrO2-TiO2, wherein x is in the range of 0.015 to 0.017; y is in the range of 0.003 to 0.005; and z ranges from 0.025 to 0.03. By introducing ytterbium ions, lanthanum ions and other ions and the ZrO2-TiO2 coating layer, the fluorescence lifetime, the thermal stability and the chroma stability of the silicon-germanium fluorescent powder are effectively improved; and the silane coupling agent KH-570 is used for surface modification and fluidized bed grading treatment, so that the fluorescence lifetime, the thermal stability, the chroma stability and the moisture resistance of the silicon-germanium fluorescent powder are further improved. Therefore, the silicon-germanium fluorescent powder disclosed by the invention has a wider application prospect in the LED.

The invention discloses a fiber ceramic-based catalytic filter element for denitration of industrial flue gas and a preparation method of the fiber ceramic-based catalytic filter element, and belongs to the technical field of catalytic filter elements. According to the preparation method, firstly, a chelating agent is introduced in the preparation process of TiO2 sol to improve the dispersity and particle size uniformity of TiO2 nanoparticles, the chelating agent can effectively adjust the hydrolysis rate of butyl titanate by means of the strong coordination acting force of the chelating agent and titanium ions, and high-dispersity and small-particle-size TiO2 sol is constructed; then, the fiber ceramic base material is immersed in the TiO2 sol, a firm TiO2 coating is formed after calcination, the firm TiO2 coating serves as a carrier with a high specific surface area, and the binding force between the firm TiO2 coating and the base material is enhanced; the preparation method comprises the following steps: firstly, preparing a TiO2 coating, then dipping a solution containing vanadium and tungsten precursors onto the composite carrier, and calcining to form a main active component V2O5 and a cocatalyst WO3 which are highly dispersed on the surface of the TiO2 coating to form selective catalytic reduction active sites, thereby finally obtaining the fiber ceramic-based catalytic filter element which is good in blocking resistance, water-resistant, sulfur-resistant and high-temperature-resistant and can be used for industrial flue gas denitration.

The invention discloses a coating type denitration catalyst as well as a preparation method and application thereof. The coating type denitration catalyst comprises a honeycomb monolithic attapulgite carrier, the honeycomb monolithic attapulgite carrier is coated with a TiO2 coating, the TiO2 coating is loaded with an active component, and the mass of the TiO2 coating accounts for 1%-20% of the mass of the honeycomb monolithic attapulgite carrier. The loading capacity of the active component on the honeycomb integral attapulgite carrier coated with the TiO2 coating is not less than 10g / L; the active component is a combination of V2O5 and WO3 and / or MoO3. The carrier material of the coating type denitration catalyst is green and economical, industrial upgrading is promoted, the integral honeycomb attapulgite is adopted as the carrier, the coating type denitration catalyst has the advantages of being low in cost and environmentally friendly, and related industries are promoted to be upgraded towards the green and high-added-value direction.

This utility model relates to the field of lens technology and discloses a multi-point defocus lens, comprising: a base layer; a composite functional layer, including a reflective layer, an anti-fouling layer, and a wear-resistant layer arranged sequentially; and a defocusing structural layer, embedded in the base layer or the composite functional layer, including a honeycomb microlens array arranged in a honeycomb pattern, wherein the density of the honeycomb microlens array is ≥500 / cm². 2 The defocusing amount increases gradually from the center of the lens to the edge. Under ultraviolet light, the TiO2 coating in the anti-fouling layer can decompose more than 95% of organic stains (such as fingerprints and grease). After 1000 wiping tests, the light transmittance decreases. The nano-SiO2 coating has a hardness of 9H (pencil hardness) and excellent scratch resistance. Through plasma pretreatment, the composite functional layer has high adhesion to the base layer and is not prone to delamination even under large temperature differences. The composite layer solves problems such as anti-fouling and anti-scratch, and achieves synergy of multifunctional composite coating with excellent performance.

This invention provides a plasma-sprayed graphene nanosheet-reinforced Al2O3-20wt%TiO2 coating and its preparation method, relating to the field of surface-protective functionalized coating preparation technology. The preparation method includes: combining graphene nanosheets with Al2O3-20wt%TiO2 ceramic powder to form a composite powder; and using a plasma spraying process, under specific process conditions, spraying the composite powder onto a pretreated substrate surface. Under this process, molten ceramic droplets can effectively coat the graphene nanosheets, forming a "ceramic-coated graphene" composite structure. The graphene nanosheets act as a reinforcing phase, synergistically improving the microhardness and fracture toughness of the coating. This invention solves the problem of traditional ceramic coatings being unable to simultaneously achieve both hardness and toughness, resulting in a coating with excellent overall performance.

This invention discloses a composite oxide film for aluminum electrolytic capacitors used in hydrogen fuel cells and its preparation method, belonging to the technical field of aluminum electrolytic capacitors. The preparation method includes: sequentially performing surface cleaning, neutralization, formation, and activation pretreatment on high-purity aluminum foil to prepare a surface-activated Al2O3 base film; selecting tetrabutyl titanate as the titanium source, mixing solvent, chelating agent, and hydrolyzing agent in a preset molar ratio, and preparing TiO2 sol through stirring, coupling agent modification, and ultrasonic dispersion; coating the TiO2 sol onto the surface of the Al2O3 base film using a dip-coating process to form a wet film; and transforming the wet film into anatase TiO2 coating through segmented sintering to obtain an Al2O3-TiO2 composite oxide film. The composite oxide film comprises a sequentially composited Al2O3 base film and anatase TiO2 coating, with a tight, gapless interface. This invention, through material composite and process optimization, enables the composite oxide film to possess low dielectric loss, high breakdown voltage, high humidity resistance, and vibration resistance, making it suitable for the harsh operating conditions of hydrogen fuel cells and improving the capacitor's service life and stability.

This invention discloses a composite membrane-based stackable universal three-dimensional snail aquaculture device, relating to the field of aquaculture technology. It includes at least one aquaculture unit and a filter screen. The aquaculture unit comprises a transparent inverted U-shaped frame and a detachable base plate; the inverted U-shaped frame is connected to the detachable base plate; the interior of the inverted U-shaped frame has a permeable arc-shaped groove, forming through-channel openings at both ends of the aquaculture unit; a transparent nano-TiO2 coating is applied to the outer surface of the inverted U-shaped frame; a modified transparent polyester fiber composite membrane is adhered to the inner surface of the inverted U-shaped frame; the detachable base plate is made of frosted ABS board; the aquaculture units can be spliced ​​together in planar space and stacked vertically; the filter screen is used to seal the through-channel openings of the aquaculture units. This invention has a simple structure, requires no power, and is low-cost, combining three-dimensional aquaculture, water purification, natural feed enrichment, and rapid harvesting functions. It is highly versatile and suitable for efficient and green aquaculture of various snail species in multiple scenarios.

This invention relates to a method for enhancing the lifespan of coated titanium electrodes using a polymer-modified coating solution. Compared to electrodes prepared with conventional coating solutions without polymer modification, the electrode coating prepared with the polymer-modified solution exhibits a 20-50% reduction in crack size, a 0.8-2.4-fold increase in accelerated life testing lifespan, and a 1-2.5-fold increase in lifespan during frequent reverse electrolysis of tap water. The polymer-modified coating solution method is applicable to coated titanium electrodes with various active coatings, including but not limited to RuO2-TiO2 coatings, RuO2-TiO2-IrO2 coatings, RuO2-TiO2-SnO2 coatings, and IrO2-Ta2O5 coatings. Furthermore, the polymer-modified coating solution method is compatible with existing industrial electrode manufacturing processes, namely the surface coating thermal decomposition process, and is easily scaled up for production.

This invention relates to a processing method for AR eyeglass lenses, belonging to the field of glass surface treatment technology. To address the problems of poor color difference and PV value in existing products, a processing method for AR eyeglass lenses is provided. The method includes placing the AR eyeglass lens to be coated in a vacuum coating chamber, first performing a titanium pentoxide (TiO2) coating to form a TiO2 coating layer one on the surface of the AR eyeglass lens; then performing a silicon dioxide coating to form a silicon dioxide coating layer one on the surface of the TiO2 coating layer one; repeating the TiO2 coating step A and the silicon dioxide coating step B, sequentially forming a TiO2 coating layer two, a silicon dioxide coating layer two, a TiO2 coating layer three, and a silicon dioxide coating layer three, until the coating process is complete, resulting in a coated AR eyeglass lens. This method enables the formed coating layers to have a low overall color difference value and a purple color effect, making it better suited for AR eyeglass lenses.

This utility model provides a composite material invisible screen assembly that resists ultraviolet radiation, belonging to the field of invisible screen technology. The assembly includes a top base; two connecting seats, each fixedly connected to the lower end of the top base, with a base fixedly connected to the lower end of each connecting seat, and multiple connecting posts fixedly connected to the upper end of the base; a rotating shaft rotatably connected to the inner walls of both sides of the top base, with a composite material invisible screen fixedly connected to the outer surface of the rotating shaft; the composite material invisible screen contains a nano-TiO2 coating and a polyester fiber substrate, thereby blocking ultraviolet rays and delaying screen aging. A double-locking mechanism ensures mechanical locking, preventing elasticity loss after repeated stretching and accidental screen retraction. An anti-accidental-touch design prevents external force from triggering unlocking.

The application discloses a high-selectivity gas sensor for NO2 gas detection at room temperature and a preparation method thereof, which comprises an electrode sheet and a black titanium dioxide sensing film uniformly loaded on the surface of the electrode sheet. TiO2 is added into a solvent to form a slurry, the slurry is uniformly drop-coated on the electrode sheet, then the electrode sheet is uniformly and slowly heated to remove the solvent, and the operation is repeated for multiple times, so that a TiO2 coating with a required thickness is formed on the surface of the electrode sheet; and the electrode sheet coated with the TiO2 coating is annealed in vacuum to form a black titanium dioxide sensing film on the surface of the electrode sheet. The black titanium dioxide sensing film has oxygen vacancies, and can realize detection of NO2 at room temperature, has high detection sensitivity, low detection limit and high selectivity, realizes rapid and efficient detection of NO2, has low detection cost, and is suitable for popularization and application.

The invention discloses a design and preparation method of a lotus seedpod type titanium alloy surface super-hydrophobic microstructure. The super-hydrophobic function is achieved by designing the lotus seedpod-shaped structures and the pit structures which are periodically arranged, and preparation is conducted through the femtosecond laser and the magnetron sputtering technology. The designed super-hydrophobic microstructure can present a good super-hydrophobic function, can effectively store air to form an air film layer, and realizes antibiosis by a physical isolation method, so that the bone implant obtains the ability of resisting bacterial adhesion and biofilm formation. And based on the lotus seedpod-shaped structure and pit composite structure characteristics, a mathematical equation is deduced in combination with a liquid drop infiltration model, characteristic parameters of the corresponding super-hydrophobic microstructure when the contact angle is larger than 150 degrees are determined, and super-hydrophobic microstructure design is completed. A Ti6Al4V titanium alloy material is selected for polishing pretreatment, a lotus seedpod-shaped structure and a pit structure are etched on the surface of the polished titanium alloy by utilizing the characteristics of femtosecond laser, and a TiO2 coating is deposited on the surface of the microstructure through magnetron sputtering, so that the preparation of the super-hydrophobic surface is realized. The design method provided by the invention can provide a systematic design theory and a realizable process scheme for surface functionalization of the bone implant.

A near-infrared reflective carbon black composite comprising carbon black and TiO2 coating and a method for making of carbon black composite are disclosed. The method comprises providing a dispersion of a carbon black in a solvent; mixing the dispersion with water and a TiO2 precursor under conditions sufficient to form an oligomer coating comprising a Ti compound on at least a portion of the surface of the carbon black, wherein the TiO2 precursor is at least partially soluble in the solvent; and converting the oligomer coating comprising the Ti compound to TiO2 to form the carbon black composite.

The application relates to a preparation method of a monolithic catalyst for catalytic combustion of methane, which comprises the following steps: impregnating a honeycomb carrier in a titanium dioxide sol, taking out and drying and roasting to obtain a carrier with a TiO2 coating; impregnating the carrier with the TiO2 coating in an active metal salt solution, wherein 3-(trifluoroacetamido) pyrrolidine hydrochloride is added in the active metal salt solution, the active metal is a perovskite type metal composite oxide, and the general structure is ABO3; taking out, drying and roasting to obtain the monolithic catalyst. 90 The monolithic catalyst provided by the application is used for catalytic combustion of methane, has a low-temperature catalytic activity of less than 500 DEG C, and has the advantages of high low-temperature catalytic activity and good long-term use activity.