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460 results about "Wetting" patented technology

Wetting is the ability of a liquid to maintain contact with a solid surface, resulting from intermolecular interactions when the two are brought together. The degree of wetting (wettability) is determined by a force balance between adhesive and cohesive forces. Wetting deals with the three phases of materials: gas, liquid, and solid. It is now a center of attention in nanotechnology and nanoscience studies due to the advent of many nanomaterials in the past two decades (e.g. graphene, carbon nanotube, boron nitride nanomesh).

Absorbent article with spacer element

An absorbent article having a front edge intended to be positioned at a front side of a person and a rear edge intended to be positioned at a rear side of a person, said absorbent article comprising a liquid pervious topsheet, a liquid impervious backsheet, and an absorbent material between said topsheet and said backsheet, wherein at least a first spacer element is included between said topsheet and said backsheet, wherein the first spacer element has a top side facing the topsheet, a bottom side facing the backsheet, and a number of lateral sides between the top and the bottom side, and wherein the absorbent material extends along at least two opposite lateral sides of the first spacer element; said first spacer element being configured to guide liquid to the absorbent material upon wetting of the absorbent article.
Owner:DRYLOCK TECHNOLOGIES NV

Surface coating process detection method and device for steel pipe production

The invention relates to the technical field of steel pipe detection, and discloses a surface coating process detection method and device for steel pipe production, and the method comprises the steps: obtaining surface topography data and temperature distribution data; performing roughness analysis according to the surface topography data to obtain roughness parameters; performing wetting simulation according to the roughness parameter and a preset initial condition to obtain permeation data and a stress distribution result; parameter optimization is carried out according to the permeation data and the stress distribution result, the spraying pressure adjustment amount and the spraying angle adjustment amount are obtained through calculation, and then optimal spraying parameters are obtained; inputting the temperature distribution data into a thermal stress distribution model to obtain thermal stress distribution data, and performing process optimization according to the thermal stress distribution data to obtain optimal curing parameters; and processing the coating on the surface of the steel pipe according to the optimal curing parameters and the optimal spraying parameters. The method has the following effect that the detection precision of the surface coating of the steel pipe can be improved.
Owner:SHENZHEN XINXINGRONG BUILDING MATERIALS CO LTD

Composite material additive manufacturing method and equipment based on size error compensation

The invention provides a composite material additive manufacturing method and device based on size error compensation, and the method comprises the steps: selecting the number, type and combination mode of materials needed by each layered structure strip according to the material performance of a prepared component and the local thermodynamic performance and mechanical performance of the component; all strips of the single layered structure are laid at the same time or in each round, so that the single layered structure is formed; each strip is made of a single type of material or is formed by laminating and compounding a plurality of single type of materials, and the self-adaptive laying method is executed according to data of various sensors in the laying process and data of a detection mechanism after laying; and the steps are repeated, and the strips are laid layer by layer according to the layer sequence of the layered structure till the component is formed. According to the method, through effective combination of additive manufacturing modes of multiple fiber composite materials, multiple materials are combined and then laid, and it is ensured that the distribution of fibers and the infiltration effect of a matrix reach the ideal state.
Owner:EAST CHINA UNIV OF SCI & TECH

Dissimilar metal friction welding interface regulation and control layer and aluminum steel friction welding method

The invention discloses a dissimilar metal friction welding interface regulation and control layer and an aluminum steel friction welding method. The dissimilar metal friction welding interface regulation and control layer comprises a micro-texture arranged on the metal surface, paste is laid at the micro-texture, and non-metal substances in the paste are completely volatilized before dissimilar metal metallurgical bonding; the welding method comprises the steps that a microstructure is prepared in a designated area on the surface of a stainless steel plate, Zn-20Al powder and ethyl alcohol are mixed and stirred into paste, then the paste is evenly laid on the microstructure area on the surface of base metal, and then friction stir welding is conducted. A welding joint obtained through the scheme is good in toughness (plasticity) and high in strength, atomic-level tight combination of a joint interface is achieved, the mechanical property of the joint is excellent, the joint is free of air hole and crack defects, the adverse effect of brittle intermetallic compounds on the mechanical property is weakened, the wetting spreading performance and the element diffusion capacity of the interface are enhanced, and the welding quality is improved. The obtained welding joint has a good mechanical embedding characteristic.
Owner:NANCHANG HANGKONG UNIVERSITY

Heat-conducting phase change coating and preparation method thereof

The invention discloses a heat-conducting phase-change coating which comprises the following components: a bonding material agent, a solvent, an initiator, a heat-conducting filler, a phase-change material and a wetting dispersant. The heat-conducting phase change coating with high heat conductivity, high enthalpy value and high polymerization strength is obtained by researching a temperature change material, a heat-conducting filler, a binding material and the like. When the continuous working temperature is high, the phase-change material still keeps good cohesive strength, all the components are not separated, the phase-change coating does not become dry or hard, the thermal resistance is not increased, heat can be rapidly conducted and dissipated, and the service life of the phase-change coating is prolonged. Besides, the coating is convenient to use, the whole material can be packaged by different materials after being coated in a high-temperature state, and the coating is convenient to use, install and process in a solid state and can be widely applied to the fields of electronics, aerospace and the like.
Owner:DONGGUAN JUNQING ELECTRONIC TECH CO LTD

Efficient mixing equipment

The present application discloses an efficient stirring device 100, which includes a stirring tank body 101 forming an inner tank space to accommodate a mixture of powder materials and liquid materials; a stirring paddle103 and a stirring main shaft 104, at least a portion of which is disposed within the inner tank space and rotates around a central axis; a stirring motor 105; and the efficient stirring device further includes: a plurality of scraping members 101 rotatably disposed within the inner tank space to scrape off the mixture adhering to the inner wall of the stirring tank body when rotating on their own axes; a plurality of transmission shafts 107, at least a portion of which is disposed within the inner tank space; a power main shaft 108 for driving the transmission shafts to rotate on their own axes and to revolve around the central axis; and a scraping motor 109 for driving the scraping main shaft to rotate. Among them, the scraping members are connected to the transmission shafts in a non-rotating manner to move with the transmission shafts, and the transmission shafts are disposed parallel to the power main shaft. The advantage of the present application is that it provides an efficient stirring device that improves the wetting efficiency by disposing scraping members within the inner tank space that rotate on their own axes and revolve to scrape off the mixture adhering to the inner wall of the stirring tank body.
Owner:CHEN QING

Acid etching solution for aluminum-based circuit

The invention discloses an aluminum-based circuit acidic etching solution, which relates to the technical field of etching, and comprises the following components by mass concentration: 30-60 g / L of composite inorganic acid, 10-20 g / L of a wetting agent, 5-15 g / L of a stabilizer, 5-15 g / L of an accelerator, 6-15 g / L of a brightener, 0.5-2.5 g / L of a composite anti-lateral corrosion agent, and 2-4 g / L of a complexing agent. According to the acid etching solution for the aluminum-based circuit, the lateral etching rate of a 50-75-micron thin circuit can be lower than 30%, the etching rate is stable, the etched appearance is bright and uniform, and the circuit does not have a burr phenomenon; the wetting agent is added, so that the etching uniformity can be improved, the burr phenomenon can be prevented, the adsorption rate of inorganic acid can be increased for the burr part which is difficult to treat, and the corrosion efficiency of the burr part can be improved; by adding the brightener, the phenomena of uneven partial etching and blackening of the surface after etching can be solved.
Owner:SHENZHEN YICHENG ELECTRONIC TECH CO LTD

Preparation method and application of composite micro-groove super-hydrophobic low-ice-adhesion photo-thermal film

The invention discloses a preparation method of a composite micro-groove super-hydrophobic low-ice-adhesion photo-thermal film. The preparation method comprises the following steps: (1) constructing a low-elasticity-modulus photo-thermal composite sponge substrate through a solvothermal method; (2) uniformly coating the surface of a substrate with a polydimethylsiloxane (PDMS) precursor solution by adopting an aerosol-assisted deposition technology, and carrying out thermocuring to form a functional composite interface layer; and (3) constructing a multi-stage scallop surface-imitating micro-nano groove composite structure on the surface of the interface layer by using a femtosecond laser micro-nano processing technology. The prepared film has super-hydrophobicity, the surface of the film is in a Cassie-Baxter wetting state with a 164-degree contact angle and a 1-degree rolling angle, and the film has a surface self-cleaning function. Under the icing condition, the adhesion strength of an ice layer of the system is obviously reduced to 2.57 kPa, the static delay icing time is effectively prolonged to 1587 s, and the system has the photo-thermal response characteristic and can realize rapid icing ablation under the standard solar irradiance; the preparation method has the characteristics of high process controllability, environment friendliness and the like, and is suitable for large-scale continuous production.
Owner:SOUTHWEAT UNIV OF SCI & TECH

Efficient soldering flux and preparation method thereof

The invention belongs to the technical field of welding materials, and particularly relates to efficient scaling powder and a preparation method thereof. The efficient scaling powder is composed of, by mass, 4%-10% of organic acid activating agents, 1%-2% of thiourea reinforcing agents, 0.15%-0.3% of wetting agents, 0.2%-0.6% of antioxidants, 0.3%-0.5% of surfactants, 0.05%-0.2% of defoaming agents, 3%-5% of film forming agents, 10%-15% of solvents and the balance water. The prepared scaling powder has good spreadability, stability, corrosion resistance and the like.
Owner:GUANGDONG JIANXIN TECH CO LTD

High-entropy ceramic phase change reinforced silver-based electric contact material component screening method

The invention relates to the technical field of computational material science, in particular to a high-entropy ceramic phase change strengthened silver-based electric contact material component screening method, which comprises the following steps of: firstly, based on first principle calculation and Monte Carlo molecular dynamics simulation, combining experimental data correction, and screening out a (MgCoNiCuZn) O component proportion of which the phase change temperature is close to a silver melting point and the single-phase enthalpy value is high; secondly, dynamically simulating wetting behaviors of liquid silver and O with different component proportions (MgCoNiCuZn) through molecular dynamics, and selecting a component proportion with the best wettability with the liquid silver in combination with phase boundary energy calculation and wetting angle experimental verification; and finally, preparing a sample based on spark plasma sintering, actually measuring a wetting angle by using a seat drop method, and feeding back and correcting simulation parameters to form closed-loop optimization. The method is suitable for wettability collaborative optimization screening of a rare earth element doped high-entropy oxide system and liquid metal, proper components can be efficiently and accurately screened out, and the performance of the silver-based electric contact material is improved.
Owner:FUJIAN UNIV OF TECH

Photovoltaic profile and preparation method and application thereof

The invention belongs to the technical field of photovoltaic materials, and provides a photovoltaic profile and a preparation method and application thereof. The preparation method comprises the following steps: carrying out surface conditioning and phosphorization on a steel substrate (carbon steel or recycled steel or low alloy steel), carrying out electrophoretic deposition by using epoxy thermosetting electrophoretic primer, and pre-drying; the outer surface of a workpiece is coated with fluorocarbon finish paint (the fluorocarbon finish paint comprises the following raw materials in specific content: polyester resin with a certain viscosity hydroxyl value, fluorocarbon resin with a certain viscosity hydroxyl value, pigment filler, an organic solvent, a wetting leveling agent, a dispersing agent, a defoaming agent, an adhesion promoter and an aliphatic isocyanate curing agent), and curing is performed. And an electrophoretic primer layer with the thickness of 15-25 microns and a fluorocarbon finish layer with the thickness of 20-30 microns are formed on the outer surface of the steel substrate through curing. According to the photovoltaic profile, the electrophoretic primer layer and the fluorocarbon finish paint layer are formed on the low-cost steel substrate through one-time curing, the process can be simplified, the cost can be reduced, the paint layer is thin, and the photovoltaic profile further has long-term excellent adhesive force, aging resistance, corrosion resistance, weather resistance, gloss retention and the like.
Owner:JOLYWOOD SUZHOU SUNWATT

Super-amphiphobic high-reflection coating and preparation method thereof

The invention provides a preparation method of a super-amphiphobic high-reflection coating, and relates to the technical field of self-cleaning materials. A one-step method is adopted, and the core is to prepare functional super-amphiphobic particles with micro-nano structures. A micro-nano composite structure is constructed by a method of regrowing silicon dioxide on the surfaces of micron-scale barium sulfate, titanium dioxide or calcium carbonate particles, and then surface modification is performed to prepare the super-amphiphobic particles. And mixing the prepared particles with a water-based emulsion, alcohol-soluble or ester-soluble resin, a coalescing agent, a defoaming agent, a wetting leveling agent and an adhesive according to a certain ratio to prepare the coating. And finally, a coating with high reflectivity and super-amphiphobic performance is formed on the surface of the substrate, so that the contact angle of water drops and oil drops on the surface of the material is greater than 150 degrees.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

High-conductivity and low-ventilation-resistance gas diffusion layer and preparation method and application thereof

The invention relates to a high-conductivity and low-ventilation-resistance gas diffusion layer and a preparation method and application thereof. The gas diffusion layer comprises a supporting body and a microporous layer located on the surface of the supporting body, the microporous layer is formed by microporous layer slurry, and the microporous layer slurry comprises conductive filler, a wetting agent, a water repellent agent and water; the conductive filler comprises conductive carbon black AC80; the hydrophobic agent is selected from polytetrafluoroethylene and / or FEP (fluorinated ethylene propylene). The gas diffusion layer has excellent surface appearance performance and comprehensive performance such as conductivity, compression ratio and ventilation resistance.
Owner:SHANGHAI TANJI IND GRP CO LTD

Preparation method of water-based bi-component epoxy primer

The preparation method comprises the following steps: weighing raw materials in parts by weight: firstly weighing raw materials of a component A: 35-45 parts of epoxy resin, 10-15 parts of a modified functional agent, 5-8 parts of a carbon nanotube regulator, 4-7 parts of a flame retardant, 4-6 parts of a silane coupling agent, 2-5 parts of a wetting dispersant and 20-30 parts of water; the waterborne two-component epoxy primer is prepared by mixing the component A and the component B, the component A is prepared by blending the epoxy resin with the flame retardant, the silane coupling agent and the wetting dispersant, and meanwhile, the modified functional agent and the carbon nanotube regulator are added for cooperation and synergism, so that the flame-retardant and flame-retardant waterborne two-component epoxy primer is prepared through co-cooperation and synergism of the raw materials; the flame retardance, adhesive force and impact resistance balance coordination of the product are optimized, and meanwhile, the corrosion resistance and weather resistance durability effect of the product is remarkable.
Owner:JIANGXI COPPER IND GROUP (DEXING) BUILDING MATERIALS CO LTD

3D printed artificial marble and preparation method thereof

The invention belongs to the technical field of artificial marble, and provides 3D printing artificial marble and a preparation method thereof. The artificial marble comprises the following raw materials in specific parts by mass: an acrylic monomer, urethane acrylate, an inorganic filler, a coupling agent, a wetting dispersant, a flexibilizer, a pigment and a photoinitiator. The polyurethane acrylate disclosed by the invention has relatively high scratch resistance and flexibility, relatively good tear strength and excellent optical performance and weather resistance; and the flexibilizer can effectively improve the breaking strength and toughness of the artificial marble. According to the artificial marble, all the raw materials are reasonably selected, the proportion of the raw materials is controlled, through the 3D printing technology and light curing, the artificial marble which is instantly cured and is close to natural marble in shape and color is obtained, the toughness and strength of the artificial marble are remarkably improved, and the linear thermal expansion coefficient and the water absorption rate are remarkably reduced.
Owner:GUANGDONG XINXIU NEW MATERIAL CO LTD

Preparation method of water-washing removable PETG label adhesive and application of product of water-washing removable PETG label adhesive

The invention belongs to the technical field of thermal shrinkage label films, and particularly relates to a preparation method of a water-washing removable PETG label adhesive and application of a product of the water-washing removable PETG label adhesive, the water-washing removable PETG label adhesive is formed by adopting an emulsion polymerization method on the basis of PSt / P (BA-MMA) core-shell structure emulsion, and the application of the adhesive in PETG labels is provided. The problems that an existing adhesive is high in adhesive capacity and serious in residue are solved, the balance of adhesive force and cohesive force is achieved through the core-shell microsphere structure, the wetting power with a base material is reduced, the compatibility with the base material is reduced, and the performance that the adhesive is removed by washing is improved.
Owner:JIANGSU GUANGHUI PACKAGE

Preparation method of AgCuTi alloy powder

The invention provides a preparation method of AgCuTi alloy powder. The preparation method comprises the following steps: providing an Ag / Ti / Cu three-layer composite material; the Ag / Ti / Cu three-layer composite material is repeatedly folded and then subjected to cold compounding for N times, and an AgCuTi multi-layer composite strip is obtained; the AgCuTi multi-layer composite strip material is rolled up to form an AgCuTi roll material; the AgCuTi roll material is conveyed into atomization equipment, and plasma atomization is carried out on the AgCuTi roll material; and blowing air into an atomizing area in the atomizing equipment to obtain the required AgCuTi alloy powder. According to the method, the mode of combining the multiple processes of folding and then cold compounding and plasma atomization is adopted, the prepared material is uniform and stable, and the wettability, spreadability and quality consistency of the AgCuTi powder are improved.
Owner:WENZHOU HONGFENG ELECTRICAL ALLOY

Oil gas shaft crack plugging pressure repairing material and method based on microwave heating bismuth-based alloy

The invention belongs to the field of oil and gas exploitation, geothermal exploitation and deep ground engineering, and discloses an oil and gas shaft crack plugging pressure repair material and method based on microwave heating bismuth-based alloy, the material comprises 74%-86% of bismuth-based alloy powder, 10%-15% of Fe3O4-SiO2 core-shell magnetic particles, 3%-8% of a microwave sensitizer and 1%-3% of a wetting agent. The repairing material is conveyed to the position, where shaft crack plugging repairing needs to be conducted, in the oil and gas shaft, then the repairing material is melted in a microwave heating mode, then the melted alloy is filled in shaft crack plugging, and then a rotating gradient magnetic field is used for repairing the oil and gas shaft crack. And the liquid alloy is driven to directionally migrate to a target crack area along the magnetic line, and after alloy liquid is cooled and solidified, pressure repairing of the oil and gas shaft crack plugging target position is achieved. Precise positioning, efficient filling, phase change control and complete recovery of the repairing material can be achieved in the extremely deep environment, and therefore the high-quality repairing requirement for oil and gas shaft crack plugging pressure repairing achieved through efficient liquefaction of plugging metal can be met.
Owner:XI'AN PETROLEUM UNIVERSITY

Method for rapidly measuring surface wettability of ore grains based on low-field nuclear magnetic resonance

The invention discloses a method for rapidly measuring the surface wettability of ore grains based on low-field nuclear magnetic resonance, and belongs to the technical field of wettability measurement. According to the method, contact angles of part of energy, metal and non-metal ore particles are respectively tested through a seat drop method, then a T2 relaxation spectrum is obtained through a low-field nuclear magnetic resonance test, then a T2 weighted average value T2g value at different wetting times is obtained, linear quantitative fitting is carried out on the T2g value at different wetting times and the wetting time, and the wetting time is calculated. Obtaining a slope value kT2g of the linear function; performing first-order linear fitting on the kT2g and a corresponding ore grain contact angle theta to obtain a relational expression between the kT2g and the contact angle theta, and obtaining the wettability of the to-be-measured wettability ore grains through the relational expression between the kT2g and the contact angle theta. The linear model between the slope value and the contact angle of the T2 weighted average and wetting time fitting function established by the method is accurate and reliable, the evaluation of the surface wettability of the ore grains can be completed in only 3 minutes, and the method has the advantages of rapidness, high efficiency and the like.
Owner:KUNMING UNIV OF SCI & TECH

High-temperature-resistant ceramic coating slurry and application thereof

The invention discloses high-temperature-resistant ceramic coating slurry and application thereof, and relates to the technical field of secondary batteries, the high-temperature-resistant ceramic coating slurry comprises ceramic particles, a PAA binder, a composite emulsion, a wetting agent and water as a solvent; the addition mass ratio of the ceramic particles to the PAA binder to the composite emulsion to the wetting agent is 1: (0.5-2): (5-10): (0.05-0.2); the adding mass percentage of the ceramic particles is 30-50%. The heat resistance of the prepared ceramic coating is remarkably improved, so that the effect of improving the use safety of the battery is achieved. Based on the corresponding components, the obtained ceramic coating forms a heat-resistant PAA framework and a composite body which are mixed to coat ceramic particles, and the effect of remarkably improving the heat resistance is further achieved.
Owner:宁波大浦新材料科技有限公司

Preparation method of hard alloy material based on high-entropy alloy bonding phase

The invention provides a preparation method of a hard alloy material based on a high-entropy alloy bonding phase, and relates to the field of hard alloy materials, and the preparation method comprises the steps of S1, tungsten carbide powder pretreatment, S2, preparation of a WC-coated TiN core-shell structure, S3, in-situ synthesis of an interface wetting agent (Ti, Zr, Mo) CN, S4, wet high-energy ball milling and mixing, and S5, preparation of the hard alloy material. According to the hard alloy material prepared through the method, the limitation that traditional cobalt serves as a bonding phase is overcome, interface bonding between the high-entropy alloy and a tungsten carbide matrix is remarkably improved, abnormal growth of crystal grains is inhibited, generation of a brittle phase is avoided, and the hardness, toughness and high-temperature stability of the hard alloy material are remarkably improved.
Owner:CHONGQING UNIV OF ARTS & SCI

Asymmetric bionic texture pyramid microcolumn array device for enhancing thin film evaporation

The invention relates to an asymmetric bionic texture pyramid micro-column array device for enhancing film evaporation, the device can stably transport a coolant and expand the effective evaporation area, and the device specifically comprises: a micro-column unit, the top of which is made of a hydrophobic material and the side wall of which is subjected to hydrophilic treatment and has a textured structure; the micro-column array is composed of micro-column units which are asymmetrically arranged, and the wetting perimeter, period and gradient of the micro-column array are subjected to accurate optimization design; in addition, according to the micro-column array, the capillary transport efficiency of the liquid is further enhanced by adjusting the distance and the height gradient between the micro-columns, and therefore the evaporation area of the thin liquid film is effectively expanded. The top of the micro-column unit is made of a hydrophobic material, the side wall is subjected to hydrophilic treatment and is combined with a micro-texture structure, the distribution and capillary action of liquid are optimized, and the stable transportation capacity of the liquid on the surface of the micro-column is remarkably improved. The device has excellent heat dissipation performance while improving the liquid transportation efficiency and the thin film evaporation performance, and is widely applied to the high-heat-flux fields such as efficient heat dissipation and microelectronic cooling.
Owner:SHANGHAI JIAOTONG UNIV

Ceramic diaphragm as well as preparation method and application thereof

The invention discloses a ceramic diaphragm as well as a preparation method and application thereof. The ceramic diaphragm comprises a base membrane, a first coating arranged on the surface of at least one side of the base membrane, and a second coating arranged on the surface of the first coating, the first coating comprises modified ceramic, a dispersing agent, a thickening agent, a binding agent and a wetting agent; the second coating comprises porous nano ceramic, a dispersing agent, a thickening agent, a binding agent and a wetting agent. The ceramic diaphragm disclosed by the invention has good high temperature resistance, and the puncture resistance of the ceramic diaphragm is improved due to the addition of the modified ceramic containing the polymer coating layer; meanwhile, by adding the porous nano ceramics with different particle sizes, the heat resistance of the diaphragm is improved under the condition that the air permeability of the diaphragm is not influenced, and the stability of the battery performance is ensured.
Owner:SHANXI HOUSHENG NEW MATERIAL TECH CO LTD

Nicosulfuron-containing herbicidal composition and application thereof

InactiveCN106172467AReasonable compositionGood weeding effectBiocideDead animal preservationChemical compositionMedicine
The invention discloses a nicosulfuron-containing herbicidal composition and application thereof. The herbicidal composition is prepared from the following components: nicosulfuron, amicarbazone, and dimethyltetrachloroisooctyl ester as well as a dispersant, an emulsifier, a wetting agent, a thickening agent, an antifreeze, and a dispersion medium, wherein the dosage form belongs to a dispersed oil suspension agent. Through the combination of the three active ingredients, the herbicidal composition has an obvious synergistic effect, the use amount of pesticides is reduced, the cost and environmental pollution are reduced, the drug resistance of corn field weeds can be delayed by the application of the composition, and the control spectrum is expanded.
Owner:SHANDONG AOKUN BIOLOGICAL TECH CO LTD

Wafer cutting protection liquid composition

The invention discloses a wafer cutting protection liquid composition, and belongs to the field of wet electronic chemicals. The composition comprises the following components in percentage by mass: 0.1-5% of a wetting agent, 0.1-2% of a penetrating agent, 0.1-2% of a dispersing agent, 0.1-2% of a pH regulator, 0.1-2% of a nonionic Gemini surfactant and the balance of water, wherein the sum of the mass percentages is 100%. The nonionic Gemini surfactant used in the invention has excellent wettability and permeability, can effectively reduce surface tension at low concentration, does not introduce foreign ions, is easy to rinse, has no residue, and can improve the cleaning ability to particles. The composition prepared from the cutting fluid has good cooling and lubricating effects, has no obvious foam, does not corrode metal to damage an electrode, can protect a wafer from being damaged during cutting, prevents fragments and pollution, is low in irritation and environment-friendly, and meets the environment-friendly requirement.
Owner:FUJIAN YOUDA ENVIRONMENTAL PROTECTION MATERIAL CO LTD

Co-extrusion equipment and method for weather-resistant composite material profile

The invention relates to the technical field of composite material manufacturing, in particular to co-extrusion equipment and method for a weather-proof composite material section, the equipment comprises a pultrusion die, the pultrusion die at least comprises three sections in the direction of an infiltration tank of the pultrusion die, and the temperatures of the three sections are controlled to be 50-100 DEG C, 140-200 DEG C and 160-200 DEG C respectively; wherein a second glue injection port communicated with the infiltration tank is arranged between the third section and the fourth section, the PVDF extruder is communicated with the second glue injection port, the temperature of the PVDF extruder is gradually increased from the far end of the PVDF extruder to the second glue injection port, and the temperature of the second glue injection port is controlled to be 180-200 DEG C. The pultrusion mold of the co-extrusion equipment is subjected to segmented temperature control, resin in a high-temperature viscous flow state and PVDF melt are subjected to mutual diffusion and reaction on a contact interface by means of high temperature and then are gradually cured and formed, the process of coating the PVDF film on the surface layer remarkably improves the weather resistance of the thermosetting composite material, the equipment cost is controllable, the production efficiency is improved, and the production cost is reduced. And the production cost is reduced.
Owner:SHAOXING FUMO NEW MATERIAL CO LTD

High-heat-conductivity ceramic / metal joint and preparation method thereof

The invention provides a high-heat-conductivity ceramic / metal connector and a preparation method thereof, and relates to the technical field of welding, in the preparation method of the high-heat-conductivity ceramic / metal connector, a foam silver middle layer is added between an upper brazing filler metal foil and a lower brazing filler metal foil, and after brazing filler metal is melted at a specific high temperature, foam silver is wetted and filled, so that the high-heat-conductivity ceramic / metal connector is obtained. And meanwhile, welding of base materials (to-be-welded ceramic and a metal base material) on the two sides is achieved, and after a welding joint is solidified and formed, the foam silver serves as a high-heat-conduction channel in a welding seam, so that the heat conductivity of the welding seam is improved, and a ceramic / metal joint (DBC or DBA) with the high heat conductivity is obtained. In conclusion, by means of the method, the DBC or DBA with the high heat conductivity can be obtained, the welding interface combination is tight, the structure distribution in the welding seam is uniform, and no obvious defect exists.
Owner:HARBIN INST OF TECH

Wet production system for wet powder preparation of architectural ceramics

The invention discloses a building ceramic wetting powder-making wetting production system which comprises an air flow groove communicated with the bottom of an elevator, a plurality of connecting pieces arranged on the outer ring face of a powder storage bin, a feeder communicated with the bottom of the powder storage bin, a conical barrel communicated with the bottom of the feeder, a cylindrical disperser communicated with the bottom of the conical barrel, and an inverted cone disperser communicated with the bottom of the cylindrical disperser. A water supply system is communicated with a water supply ring pipe through a water supply main pipe; the bottom of the wetting tower body is communicated with a turntable barrel body; a turntable assembly is mounted in the turntable barrel body; the turntable barrel body is outwards communicated with a powder guide groove; the bottom of the dust remover is communicated with a material collecting cone; and the material collecting cone is communicated with the air flow groove through a powder guide flow groove. According to the invention, the improvement from multiple aspects of equipment cost reduction, dry-method powder preparation application region, energy conservation, emission reduction and the like is realized.
Owner:河北金汇陶瓷有限公司 +1

Intelligent continuous production method of common goldenrop particles

The invention relates to an intelligent continuous production method of common goldenrop particles. The method comprises the following steps: screening and crushing a filler, and conveying the filler to a material preparation bin for airflow premixing; adding the extract into an extract tank, and uniformly stirring and mixing; conveying the pre-mixed filler and extract into a mixer, uniformly mixing, inputting a wetting agent, and mixing to obtain a soft material; meanwhile, the filling agent of the next machine is subjected to airflow premixing; conveying the soft material into a granulator for granulating, and conveying granules into a hot air section of a boiling bed for drying; conveying the filling agent of the next machine into the mixing machine; after the soft materials are conveyed, the extract and the wetting agent are conveyed in sequence, and the soft materials of the next machine are prepared; after particles are transferred to the cold air section of the boiling bed, soft materials of the next machine are granulated, and materials are fed to the hot air section of the boiling bed; and screening to obtain the product. According to the continuous production method, the product quality and stability can be improved while the production efficiency is improved, and materials and energy are greatly saved.
Owner:GUANGZHOU BAIYUSN GUANGHUA PHARMA

Device and method for testing wet expansion coefficient of composite material under humidifying condition

The invention discloses a device and method for testing the wet expansion coefficient of a composite material under a humidifying condition, and belongs to the technical field of composite material performance testing, the device comprises a constant temperature box, the interior of the constant temperature box is divided into an upper closed chamber and a lower closed chamber, and the upper closed chamber is internally provided with a temperature adjusting element and a humidity adjusting element; the supporting device is arranged in the upper closed chamber, a plurality of grooves are formed in the end face of the top of the supporting device, the grooves are matched with supporting balls, and the supporting balls are used for supporting placed samples; the quality detection device is arranged in the lower closed chamber, and the detection end of the quality detection device extends into the upper closed chamber to be in contact with the bottom of the supporting device; laser emitted by the laser emitter penetrates through the upper closed chamber and is irradiated on the side end face, needing to be detected, of the sample. The problem of accurate measurement of the moisture absorption performance of the sample is solved by measuring the change of the sample through the laser transmitter and arranging the groove and the supporting ball matched with the groove on the supporting device.
Owner:SHANDONG NON METALLIC MATERIAL RESEARCH INSTITUTE