363 results about "De wetting" patented technology

The invention provides a narrow gap swing laser welding pool wettability prediction method based on CFD simulation. The method comprises the following steps that an interaction platform is constructed through Python + PyQt5, and geometric modeling, UDF compiling and a material library module are integrated; the groove parameters and the swing track are dynamically loaded to a Fluent solver, and a full-coupling transient model of a steam recoil pressure-buoyancy-molten drop mass source item is established; in CFD-POST, the widest section of the molten pool is positioned on the basis of the contour surface with the volume fraction being 0.5, and Z-direction displacement-flow velocity data are extracted along the two side wall surfaces; fusing defects are predicted through double criteria of a bilateral average flow velocity difference threshold value and F test variance homogeneity; according to the method, dynamic quantitative evaluation of wetting behaviors can be achieved, the process development period is shortened, the defect detection rate is increased, and the method is suitable for aerospace thick plate welding quality control.

A method for joining, by brazing, a first part and a second part, the steps of preparing at least one of the parts including the following: a) providing a part intended to be brazed, the part being made of carbon or based on titanium, nickel or a CoCr alloy, b) performing inert gas plasma treatment on the part whereby the part is cleaned and an active surface is formed on the part, c) depositing a first layer comprising an active element on the active surface of the part, the active element being a carbide-forming element, d) depositing a second layer of gold on the first layer, whereby the first layer is protected from oxidation and good wetting is ensured.

The invention relates to a liquid metal tilt angle sensor with wettability regulated and controlled by graphite, which comprises a flexible polymer matrix, a liquid metal layer and a graphite layer, the graphite coating covers part of the surface of the inner wall of the micro-channel and is used for regulating and controlling the wettability of the inner wall; and the liquid metal is filled in the micro-channel and forms an axially continuous gradient section fluid. According to the method, the wettability of the inner wall to the liquid metal is regulated and controlled by coating the inner wall of the smooth flexible polymer micro-channel with graphite (and regulating the proportion of the coating area) by utilizing the characteristic that a graphite material is not wetted to the liquid metal. And by utilizing the surface oxidation film characteristic and high fluidity of the liquid metal, a liquid metal gradient section with instability can be formed in the pipeline. When the pipeline is inclined, the state (such as contact area or form) of the liquid metal surface can be changed under the action of gravity, so that the resistance of the liquid metal surface is influenced, and accurate angle detection can be realized.

The invention provides a double-probe zero-value insulation identification method considering an insulator surface wetting state, and relates to the technical field of power transmission line state detection. The method comprises the steps that S1, two electric field probes are arranged on the surface of an umbrella skirt of an insulator at intervals in the axial direction, and the electric field intensities output by the two electric field probes are marked as E1 and E2 respectively; s2, calculating a deviation rate eta based on the electric field intensities output by the two electric field probes; s3, detecting a surface wetting index W of the insulator; s4, correcting the surface wetting index W to obtain a correction coefficient Kwet; s5, modifying the criterion of the zero value state into eta < lt >; and the zero value state is recognized according to the set threshold value Eta0. Kwet, and Eta0 is a fixed threshold value. According to the method, the accuracy of insulator zero value state recognition can be kept in multiple environment scenes such as rain, fog and moisture, and high robustness and high adaptability are improved for intelligent routing inspection and zero value defect recognition of a power transmission line.

This invention belongs to the field of membrane material preparation and modification technology, and relates to a method for pre-wetting the surface of a hydrophobic ceramic membrane. The ceramic membrane is immersed in a cyclohexane solution of perfluorooctyltrimethoxysilane for 3-4 hours. After immersion, the ceramic membrane is dried in an oven. An ethanol solution is forced to circulate through the ceramic membrane to pre-wet the separation layer. The pre-wetting process proposed in this invention is simple, highly controllable, and easily scaled up to pre-wet multi-channel hydrophobic ceramic membranes. This invention achieves coarse adjustment of the wetting degree by controlling the concentration of the ethanol-water solution, and further fine adjustment by combining the circulation time of the ethanol-water solution, thus achieving more precise control of the wetting degree and optimal improvement of the uniformity of the hydrophilic coating.

The invention provides a preparation method of a Joule heat-assisted super-wetting metal net, a metal net with super-hydrophilic performance and a metal net with super-hydrophobic performance. According to the material, carbon nanotubes are firmly adhered to the surface of a metal net through polydopamine mediation to construct a micro-nano coarse structure, a hydrophobic alkyl compound is grafted through a sulfenyl three-component coupling reaction to reduce surface energy, and a super-hydrophilic / underwater super-oleophobic metal net and a super-hydrophobic metal net are prepared respectively. The Joule heating effect of the material is remarkably enhanced by introducing the carbon nanotubes, so that the temperature of the material can be rapidly increased to 100 DEG C or above within 20 seconds under the ultralow voltage of 2.0 V. The characteristic can be effectively used for in-situ heating viscosity reduction of high-viscosity crude oil, continuous and efficient oil-water separation is achieved in a double-channel separation device, the crude oil flux reaches up to about 3985 L.m <-2 >. H <-1 >, and the separation efficiency exceeds 98.6%. The method is also suitable for stainless steel meshes with micron-sized apertures, and can realize efficient separation of various crude oil emulsions.

According to the electroplating device and the using method thereof, through cooperation of the wafer carrier and the auxiliary device, flexible moving and positioning of the spraying tank are achieved through the telescopic connecting piece, before electroplating, the auxiliary device can wet the surface of a wafer in advance, air in Via and Trench can be effectively removed, it is ensured that electroplating liquid is fully filled, and poor plating and hole generation are avoided; after electroplating, the auxiliary device can quickly clean the residual electroplating liquid on the surface of the wafer and collect the cleaning liquid to prevent the cleaning liquid from being introduced into the electroplating bath to interfere with the concentration of the additive; meanwhile, upwelling electroplating liquid steam can be shielded, and film forming defects caused by contact reaction of the upwelling electroplating liquid steam and the wafer are avoided; in addition, during electroplating, the auxiliary device can rotate to the outer side of the electroplating bath and conduct cleaning liquid discharging operation, normal electroplating steps are not affected, and the stability and efficiency of the electroplating process are improved.

The invention discloses a preparation method of a high-hydrophobicity liquid lead bismuth alloy nitride coating capable of increasing a high-temperature contact angle, which comprises the following steps of: pretreating a substrate, depositing a FeCrAl coating on the surface of the substrate by adopting magnetron sputtering, and nitriding the FeCrAl coating to obtain a nitride coating; the invention further discloses the high-hydrophobicity liquid lead bismuth alloy nitride coating for improving the high-temperature contact angle. According to the preparation method, the FeCrAl coating is nitrided, so that the surface strength and corrosion resistance of the FeCrAl coating are improved, the formed FeCrAl nitride layer with a compact structure has high lyophobicity on the liquid lead bismuth alloy, the material surface is in a non-wetting state all the time, the liquid lead bismuth alloy can be effectively prevented from permeating into an alloy matrix, and the service life of the material is prolonged. The material is suitable for being used as a cladding material of a lead-cooled fast neutron reactor.

The invention discloses a low-corrosion halogen-free soldering flux for aluminum-based part brazing and a preparation method of the low-corrosion halogen-free soldering flux, and belongs to the technical field of halogen-free welding materials.The low-corrosion halogen-free soldering flux comprises, by mass, 4-6 parts of oxalic acid, 1-2 parts of triethanolamine, 0.8-1.5 parts of Tween-80, 4-6 parts of polyvinylpyrrolidone, 0.3-1 part of compound nano cerium oxide, 0.5-1.5 parts of chitosan oligomer and the balance deionized water. And the welding spot oxidation resistance and the interface self-repairing capability are further improved. Through the synergistic effect of four mechanisms of complexing, oxidation prevention, wetting and film forming, the flux achieves efficient film removal, excellent wetting, no corrosion residue and stable film forming protection, is high in shear strength, low in welding spot porosity and clean in surface after welding, and is suitable for electronic packaging, heat exchanger manufacturing and high-reliability aluminum welding occasions.

A preparation method of a high-activity nitrogen-doped carbon-loaded CoRu nano-alloy is used for enhancing pH universal hydrogen evolution, and is characterized by comprising the following steps: dissolving dopamine hydrochloride in an aqueous solution containing H2O2 and CuSO4. 5H2O, and magnetically stirring to form a uniform mixture; and pre-wetting carbon cloth with ethanol, immersing the pre-wetted carbon cloth in the dopamine solution for 10 minutes, taking out the pre-wetted carbon cloth, washing the pre-wetted carbon cloth with deionized water for three times, and carrying out vacuum drying to obtain the polydopamine modified carbon cloth marked as PDA / CC. And immersing the obtained PDA / CC into 20 mL of aqueous solution containing Co (NO3) 2.6 H2O and RuCl3 for 6 hours to realize metal ion adsorption. And washing and drying a sample, and calcining the sample in a tubular furnace at 700 DEG C in an N atmosphere for 2 hours to obtain the self-supporting nitrogen-doped porous carbon-loaded CoRu alloy material which is recorded as CoxRu (at) CN / CC. Through a synthesis strategy based on active ion capture and in-situ carbon thermal reduction, and through construction of a nitrogen-doped carbon cobalt ruthenium alloy nanostructure and a strong metal-carrier synergistic effect, efficient hydrogen overflow and establishment of stable active sites are realized; therefore, the performance bottleneck that high activity and high stability of a traditional electrocatalyst in a wide pH range are difficult to cooperate is broken through.

The invention relates to the field of fabrics, and discloses an ionic power generation fabric capable of collecting multi-mode wetting energy. Comprising the following raw materials in parts by weight: a temperature-responsive zwitterionic monomer with the mass percent concentration of 10-50%, a cross-linking agent which accounts for 0.5-3% of the mole number of the temperature-responsive zwitterionic monomer, an initiator which accounts for 1-6% of the mole number of the temperature-responsive zwitterionic monomer, and an initiator which accounts for 1-6% of the mole number of the temperature-responsive zwitterionic monomer, the fabric disclosed by the invention can be simply prepared through a traditional spinning and twisting process, has the characteristics of low cost and high environmental adaptability, and is suitable for large-scale production.

This application relates to a fixed abrasive having a low wettability bond material. An abrasive article includes a fixed abrasive body having a specific MOR / EMOD ratio associated with a specific bond volume percentage. The body also has a micron 2 Average bond post area (BPA) of: b) 1536 mm 2 c) an average bond post count (BPC) of at least 140 per micron; or d) an average bond wetting radius of at least 30 per micron; or d) a combination of a) and b).

The invention provides a high-adhesion and high-impact-resistance type hydrophilic membrane treating agent, which is prepared from the following ingredients in parts by weight: 40 to 60 parts of epoxy-polyurethane composite emulsion, 10 to 20 parts of nanometer composite hydrophilic agents, 5 to 15 parts of adhesion promoters, 8 to 12 parts of impact resistance modifiers and 0.5 to 2 parts of wetting flatting agents. The high-adhesion and high-impact-resistance type hydrophilic membrane treating agent is good in adhesion, high in impact resistance, good in hydrophilicity and resistant to corrosion.

The present invention relates to a method for permanently bonding a membrane (2, 3) of a humidifier (1) for a fuel cell system to at least one component (3, 4) of the humidifier (1). In summary, an adhesive (9) is applied to a membrane (2) of the humidifier (1), penetrating open pores (10) of the membrane (2, 3) and wetting a section (7) of a surface (8) of the membrane (2, 3). Upon curing of the adhesive (9), an adhesion promoter layer (11) with comparatively good adhesive properties is formed on the membrane (2, 3). The adhesion promoter layer (11) can be used to create a tight and permanent bond between the membrane (2, 3) and at least one component (3, 4) of the humidifier (1). The invention further relates to a humidifier (1) for a fuel cell system with at least one membrane bonded in this manner.

A method includes providing an IC package having a lead and a die encapsulated in a mold compound. The mold compound extends from a top mold surface to a base mold surface of the IC package. The method also includes trenching the mold compound from the top mold surface to the lead to form a trench. The method further includes forming a vertical wettable flank by filling the trench with a conductive material.

Proposed is a photocatalytic complex. The photocatalytic complex includes a photocatalyst, and an iodine compound layer formed on a surface of the photocatalyst to cover the same and containing an iodine compound. The present disclosure enables selective degradation of hydrophilic volatile organic compounds by the use of the photocatalyst coated with the iodine compound.

The invention discloses a wet-type large-surface repairing material and a preparation method thereof. The repairing material comprises the following components in percentage by mass: 20-30% of sintered magnesia coarse sand with the particle size of 10-5 mm and the mass percentage of 20-30%; the particle size of the sintered magnesia fine sand is 5-3mm, and the mass percent of the sintered magnesia fine sand is 5-15wt%; the grain size of the forsterite is 3-1 mm, and the mass percentage of the forsterite is 15-25 wt%; the particle size of the medium-grade magnesia is not greater than 2mm, and the mass percent is 15-25wt%; the particle size of the medium-grade magnesia fine powder is 150-200 meshes, the mass percent of the medium-grade magnesia fine powder is 10-15 wt%, the particle size of the magnesium-calcium-iron sand fine powder is 150-200 meshes, and the mass percent of the magnesium-calcium-iron sand fine powder is 1-8 wt%; 10 to 14 wt% of modified asphalt; and 0.5 to 1.5 wt% of industrial white oil. The repairing material disclosed by the invention is low in cost, environment-friendly and economical, has relatively high breaking strength, and is particularly suitable for a large-surface repairing material of a schreyerite steelmaking converter.

This invention discloses a controllable patterned wetting microfluidic chip and its preparation method. The preparation method includes the following steps: injecting an alkaline solution into a glass chip channel and allowing it to stand to hydroxylate the surface of the glass chip channel; after standing, cleaning and drying the glass chip channel; then preparing a hydrophobic film on the surface of the glass chip channel; subsequently treating the hydrophobic film to adjust the hydrophobicity of a preset area of ​​the hydrophobic film, thereby obtaining the controllable patterned wetting microfluidic chip. This invention, by preparing a hydrophobic film on the surface of the glass chip channel and then treating it to adjust the hydrophobicity of a preset area, enables the glass chip channel to have different surface properties, fully replicating the complex wetting properties of oil reservoirs. Furthermore, the contact angle can be freely adjusted according to the formation properties, achieving controllable patterned wetting. The fabrication process is simple, low-cost, and does not require expensive equipment.

The invention discloses a wear-resistant anti-icing easy-to-deice coating for power equipment and a preparation method thereof, and relates to the technical field of coatings. The wear-resistant anti-icing easy-to-deice coating for the electrical equipment is prepared from the following raw material components in parts by weight: 40 to 60 parts of water-based fluorocarbon resin dispersion, 5 to 15 parts of perfluorosilane surface modified filler, 3 to 10 parts of light-absorbing heating material, 0.5 to 2 parts of wetting dispersant, 0.2 to 0.6 part of defoaming agent, 0.2 to 1 part of flatting agent, 0.5 to 1 part of anti-aging agent, 15 to 25 parts of deionized water and 12 to 20 parts of water-based isocyanate curing agent. The perfluorosilane surface modified filler is obtained by modifying a filler with a perfluorosilane coupling agent; the light-absorbing heating material is a Fe3O4 / C composite material or a product obtained by further modifying the Fe3O4 / C composite material through a vinyl silane coupling agent and then reacting and grafting with amino-terminated hyperbranched polyamide.

The subject application relates to bonded abrasive with low wetting bond material. An abrasive article including a bonded abrasive body having a particular MOR / EMOD ratio associated with a particular bond vol %. The body also can include a) an average Bond Post Area (BPA) of not greater than microns2; b) an average Bond Post Count (BPC) of at least 140 per 1536 mm2; c) an average bond wetting radius of at least 30 / microns; or d) a combination of a) and b).

A method of manufacturing a vapor cell includes forming a body of the vapor cell having walls defining a cavity thereinbetween, the cavity having an amount of a subject material contained therein. The method also includes forming a pore structure having a substrate material with pores of a substantially uniform dimension formed therein, the pore structure disposed along a portion of one or more of the walls of the vapor cell. The method further includes forming a liner material of a uniform thickness over one or more internal surfaces of the pores, wherein the subject material exhibits a reduced wetting angle on the liner material which is less than a wetting angle of the subject material on the substrate material.

The present disclosure relates to a liquid metal jetting ejection nozzle having a nozzle main body and a wetting plate. The nozzle main body has an enlarged opening at a distal end through which a molten metal feedstock material flows during a liquid metal jetting operation, and is formed from a first material having a first wetting characteristic. The wetting plate has an aperture and is secured to the enlarged opening of the nozzle main body. The wetting plate has a second wetting characteristic of a magnitude less than the first wetting characteristic to at least inhibit wetting. This two piece nozzle construction enables optimum materials and construction / fabrication techniques to be used for both components, thus improving performance, durability and reliability of the ejection nozzle.

Method and systems for cleaning and wetting a semiconductor substrate, are provided. Methods and systems include forming an atmosphere in a basin housing the semiconductor substrate with a gas having a higher solubility in a wetting agent than oxygen. Methods and systems include spraying the wetting agent with a spray head onto the substrate while maintaining the atmosphere. Methods and systems include rotationally translating the semiconductor substrate, the spray head, or both the semiconductor substrate and the spray head, Methods and systems include wetting a plurality of features defined in the substrate.

The present application relates to the technical field of silicon wafer production, and discloses a cleaning and drying method and system for silicon wafers, which comprises the following steps: pre-cleaning silicon wafers after being cut; loading the pre-cleaned silicon wafers into a silicon wafer basket; immersing the silicon wafer basket into a cleaning tank to perform main cleaning on the silicon wafers; sending the silicon wafer basket after the main cleaning into a closed drying cavity, measuring the in-situ wetting angle of the contact area between the edge of the silicon wafer and the clamping tooth of the silicon wafer basket by using an optical wetting angle measuring instrument in the closed drying cavity; matching the value of the in-situ wetting angle obtained by detection with a plurality of preset wetting angle intervals, and controlling the infrared radiation array to irradiate and dry the silicon wafer basket according to the drying strategy corresponding to the matched wetting angle interval; sampling the dried silicon wafers, performing the same texturing and thermal oxidation treatment on the sampled silicon wafers, and detecting whether the treated silicon wafers are abnormal; and grading the silicon wafer batches without abnormalities into the warehouse. The method can improve the production yield of silicon wafers.

The embodiment of the invention provides a wetting agent, a pole piece and a battery. The wetting agent comprises a core material and a shell, wherein the core material is in a cavity defined by the shell; the core material comprises a first polyacrylate copolymer and a wetting auxiliary agent; the first polyacrylate copolymer comprises a first acrylate structural unit, a first crosslinking structural unit and an anchoring structural unit, and the first acrylate structural unit is an acrylate structural unit containing a polar group; the shell comprises a second polyacrylate copolymer; and the glass transition temperature of the second polyacrylate copolymer is 60-120 DEG C. According to the invention, the first polyacrylate copolymer containing polar groups is used as a component of the core material of the wetting agent, and the second polyacrylate copolymer with high glass transition temperature is used as a shell component, so that the obtained wetting agent can be accurately broken and release a wetting auxiliary agent in a battery cycle process; furthermore, the wettability of the electrolyte on the active layer and the current collector is enhanced, and the rate capability and the cycle performance of the battery are improved.

The invention provides a rolling oil removing method for high-wetting-tension aluminum foil, which comprises the following steps: collecting a first Dalton value and a second Dalton value, the first Dalton value being the Dalton value of the aluminum foil before rolling, and the second Dalton value being the Dalton value of the aluminum foil after rolling; rolling data and cleaning data are determined according to the difference value of the first Darn value and the second Darn value, the rolling data are the rolling speed, the rolling force and the rolling oil flow of the rolling machine, and the cleaning data are the negative pressure purging data, the electrostatic adsorption data and the infrared volatilization data of the cleaning machine; the rolling machine is controlled to run according to the rolling data, the cleaning machine is controlled to run according to the cleaning data, and a closed-loop control system is formed to ensure that the wetting tension of the aluminum foil stably reaches the standard by measuring the difference between Darn values before and after rolling in real time and dynamically adjusting rolling and cleaning parameters.

A super-wet surface is a polypropylene surface, on which a hydrophilic side group is grafted, having a micro-nano structure. The super-wet surface is at least super-hydrophilic and does not contain an initiator residue. The super-wet surface is prepared by grafting, in the absence of an initiator, by means of microwave irradiation, a monomer for forming a side group, on the polypropylene surface, as a grafting base, having a micro-nano structure. In the preparation of the super-wet surface, the molecular weight of polypropylene does not decrease after grafting, there is no residual monomer or initiator residue, and the super-wetting effect of the obtained surface is lasting and stable. The super-wet surface can be used in bonding, spraying, oil-water separation, water treatment, biology, medicine and energy fields.

The invention discloses a brazing method for a C / C composite material and a glass material based on a Ti-Cu composite modified layer and low-temperature glass brazing filler metal, relates to the technical field of brazing of the C / C composite material and the glass material, and aims to solve the problem that the glass material cracks due to large stress caused by high temperature during brazing of the C / C composite material and the glass material. And the low-temperature glass brazing filler metal is difficult to wet on the surface of the C / C composite material. The method comprises the steps that a C / C composite material with a Ti-Cu composite modified layer on the surface, low-temperature glass brazing filler metal and a glass material are stacked in sequence from bottom to top, and a to-be-welded assembly is obtained; the to-be-welded assembly is heated to 450 DEG C to 640 DEG C, and heat preservation is conducted for 1 min to 30 min; after heat preservation is finished, the temperature is reduced to 200-300 DEG C firstly, and then the temperature is reduced to the room temperature. The brazing method for the C / C composite material and the glass material based on the Ti-Cu composite modified layer and the low-temperature glass brazing filler metal can be obtained.

Embodiments of the present disclosure relate to methods of improving adhesion of wettable metallized multilayer in an integrated electronic device. A process for forming a silver-containing wettable material structure is disclosed in which, on a metal layer comprising aluminum, a zinc layer is deposited, the zinc layer reacts with the metal layer, and a surface micro-roughness is created; the zinc layer is removed; and a wettable layer comprising silver is deposited by vapor deposition. The wettable layer is formed by an adhesion layer, a barrier layer and a bonding layer, and the adhesion layer comprises titanium or chromium; a barrier layer comprising nickel on the adhesion layer; the bonding layer includes silver on the barrier layer.

The invention provides a liquid nitrogen cooling system for maintaining continuous infiltration of the upper surface of a cold cavity. The liquid nitrogen cooling system comprises a liquid nitrogen Dewar, a gas-liquid separator and a cooling temperature control cavity, wherein the liquid nitrogen Dewar is used for providing low-temperature liquid nitrogen; one end of the gas-liquid separator is connected with the liquid nitrogen Dewar through a liquid-phase pipeline, the bottom of the other end of the gas-liquid separator is connected with the cooling temperature control cavity through a liquid-phase pipeline, and the top of the gas-liquid separator is connected with a gas-phase pipeline for exhausting gas; a temperature sensor and an acoustic emission probe are mounted in the cooling temperature control cavity, the temperature sensor is used for monitoring the wall surface temperature change of the cooling temperature control cavity in real time, and the acoustic emission probe is used for monitoring a high-frequency elastic wave signal in the cooling temperature control cavity; the wetting state of the upper surface of the cooling temperature control cavity can be judged, so that liquid nitrogen on the surface of the cooling temperature control cavity is conveniently controlled, the cooling temperature control cavity is prevented from entering a dry condition, and the liquid nitrogen heat exchange efficiency is improved.