623 results about "Colloidal silica" patented technology

Even when used for polishing a semiconductor wafer provided with a silicon nitride film, there is provided sulfonic acid-modified colloidal silica capable of forming a highly flat polished surface at high speed. Sulfonic acid-modified colloidal silica, wherein the sulfur content of the silica particles is 700 mass ppm or more and less than 3000 mass ppm per 1 g of the silica particles, the sulfur content in the solvent is 250 mass ppm or less per 1 g of the solvent, and the content of coarse particles having a particle size of 0.2 μm or more contained in the silica particles is 10,000,000 particles / mL or less when the silica particle concentration is 1 mass%.

The invention relates to the technical field of silica gel belt surface coating, in particular to coating equipment for polyester film silica gel belt production, which comprises a machine body, a driving device, an unwinding roller, a winding roller, a guide roller, a compression roller, a coating roller, a storage box, a comma scraper and a driving motor, an adjusting rod arranged on an output shaft of a driving motor synchronously rotates anticlockwise, an arc-shaped plate at the upper end of the adjusting rod rotates, and the arc-shaped plate pushes the lower side of a sliding plate, so that the sliding plate slides upwards in a sliding groove, the sliding plate drives an adjusting roller to move upwards in the process, and in the upward moving process of the adjusting roller, the adjusting roller is driven to move upwards; the silica gel sheet located on the lower side of the adjusting roller synchronously moves upwards, so that the gap between the silica gel sheet and the rubber belt is enlarged, then after the gap between the comma scraper and the coating roller is enlarged, the gap between the lower side of the silica gel sheet and the rubber belt is synchronously enlarged, and the rubber belt can smooth coatings with different thicknesses; and the coating effect on the silica gel sheet is further improved.

A polishing liquid which reduces the occurrence of erosion and scratches on a surface to be polished of an object to be polished having a cobalt-containing film after polishing in a case where the polishing liquid is applied to CMP of the object to be polished is provided. In addition, a chemical mechanical polishing method using the above-mentioned polishing liquid is provided. The polishing liquid is a polishing liquid used for chemical mechanical polishing of an object to be polished having a cobalt-containing film. The polishing liquid includes colloidal silica, an organic acid, a specific nitrogen-containing aromatic heterocyclic compound and hydrogen peroxide, and has a pH of 8.5 to 12.

The invention discloses a silica gel film quality detection method and system based on image processing, and relates to the field of image data processing.The method comprises the steps that image combination features are extracted from silica gel film images collected in advance; screening out features related to the selected defect type from the image combination features to obtain classic features of the silica gel film; mapping the classic characteristics of the silica gel film to obtain quantum state characteristics of the silica gel film; training a quantum support vector machine according to the quantum state features of the silica gel film to obtain a silica gel film quality detection classification model; performing defect classification on a to-be-detected silica gel film image by utilizing the silica gel film quality detection classification model; and converting the defect classification result of the to-be-detected silica gel film image into an interpretable quality detection report. The classic features related to the surface defects of the silica gel film are selected, so that the classification accuracy of the model is improved, the interpretability of the model is enhanced, and a user can conveniently understand the model and judge the trust model.

The invention discloses an unmanned aerial vehicle with a soft robot arm of a bionic octopus tentacle structure. The unmanned aerial vehicle comprises an unmanned aerial vehicle body, a mechanical arm installed at the bottom of the unmanned aerial vehicle body and the soft robot arm connected to the bottom of the mechanical arm. The soft robot arm is composed of a finger base and a plurality of octopus-tentacle-imitating colloidal silica bodies, and the octopus-tentacle-imitating colloidal silica bodies can be bent and deformed under air pressure driving and are used for flexibly grabbing a target object. Honeycomb-shaped micro-channels distributed in the axial direction are arranged in the silica gel body, and octopus-imitating suction cup microstructures are formed on the inner surfaces of the tentacles and comprise axial grooves and nanometer barbs which are used for enhancing friction force and grabbing stability. Pressure sensor arrays are integrated on the inner surface and the outer surface of the tentacle, contact pressure can be sensed in real time, and self-adaptive adjustment of grabbing force is achieved in combination with target form and texture information. The unmanned aerial vehicle device has the characteristics of high flexibility, high grabbing precision, high adaptive capacity and the like, and is particularly suitable for an ecological specimen collection task or agricultural product collection in a complex environment.

The invention relates to the technical field of electronic device packaging, in particular to a power diode packaging method which comprises the following steps: S1, pretreating silica gel into a fluid state and adjusting the dynamic viscosity value of the silica gel to a preset range; s2, adding fluid protection glue into the coating system for dispensing, and performing thinning operation and leveling operation by using a scraper to form a flexible packaging layer; s3, judging whether the flexible packaging layer has defects or not and the specific types of the defects, repairing the defects and adjusting operation parameters of a coating system to obtain a gluing assembly; s4, the gluing assembly is placed in a curing chamber to be heated and cured, and a packaged product is obtained; and S5, performing rib cutting forming on the packaged product to obtain the packaged power diode. According to the packaging method of the flexible packaging layer, the overall thickness of the power diode is controlled to be below 0.8 mm, meanwhile, mechanical stress in the plastic packaging process is avoided, and the packaging defect rate is reduced.

The invention discloses a bubble discharging device for a silica gel coating composite material, and relates to the technical field of bubble discharging of coating materials, the bubble discharging device comprises a tank body, a transparent observation window is arranged on one side of the tank body, a discharging pipe is connected to the lower portion of one side of the tank body in a penetrating mode, and an adding pipe is connected to one side of the top of the tank body in a penetrating mode; a through groove is formed in the center of the top of the tank body in a penetrating mode, the premixing tank is arranged above the tank body, two sets of supporting legs are symmetrically installed at the bottom of the premixing tank, the bottom ends of the supporting legs are fixedly connected with the tank body, and a feeding pipe is connected to the upper portion of one side of the premixing tank in a penetrating mode; according to the defoaming device for the silica gel coating material, when the silica gel coating material is defoamed, the coating material and the defoaming agent can be pre-tested, the applicability of the defoaming agent can be judged by observing whether mixing or layering is generated after the coating material and the defoaming agent are premixed, and if the defoaming agent is not applicable, the tested defoaming agent can be quickly discharged.

The present invention relates generally to methods of producing, using, and storing stable aqueously dispersed superhydrophobic compositions made from these compositions to provide superhydrophobic treatments on a range of porous, semi-porous, and non-porous target materials and surfaces as well as combinations of these materials and surfaces. More particularly, the present invention provides stably dispersed waterborne superhydrophobic compositions comprising colloidal silica or hydrophobically-modified silicon dioxide (i.e., silica) and one or more additional agents and / or compounds. When the compositions of the present invention are applied (e.g., via spray deposition, immersion, liquid application, and the like) to a suitable target material and / or surface the target is imparted with a durable (super)hydrophobic coating.

Provided are an aqueous inorganic coating agent capable of forming a coating film having excellent adhesion to a substrate, and a coating method using this aqueous inorganic coating agent. The aqueous inorganic coating agent includes alkaline colloidal silica, at least one of a sodium phosphate compound and a potassium phosphate compound, boric acid, and an inorganic abrasive.

The invention belongs to the field of PCBs (printed circuit boards), and provides a PCB material with high heat dissipation performance and a preparation method thereof.The PCB material adopts a multi-layer composite structure design and comprises a circuit board layer, a heat conduction insulating layer, a metal bottom layer, a silica gel-based heat conduction glue layer, a heat dissipation layer and heat dissipation fins, wherein the heat conduction insulating layer is a polyimide composite material in which hexagonal boron nitride nanosheets are oriented in parallel, and the heat dissipation layer is formed by coating an aluminum nitride reinforced aluminum-based composite material with a titanium nitride transition layer and is integrally die-cast with the heat dissipation fins. Through key technologies such as surface modified boron nitride nanosheet suction filtration orientation, polyamide acid dipping curing, heat dissipation assembly preparation through a coating-in-situ nitriding-die casting process and overall hot pressing assembly, the excellent heat conduction performance of the heat conduction insulating layer in the plane direction is achieved; the problems of low heat dissipation efficiency, poor device reliability and the like caused by insufficient heat-conducting property and insulating property of a traditional PCB material are solved, and the material has wide application value.

This invention proposes a micro / nano-scale imprinting FPC solder resist layer forming device, relating to the field of circuit board solder resist layer forming technology. It includes a forming base with a limiting base mounted on it. An imprinting head is positioned directly above the limiting base and driven by a servo electric cylinder. The limiting base has a groove, within which a rigid base is installed. A vacuum adsorption assembly is mounted inside the forming base, and a forming placement cavity is located inside the rigid base. From top to bottom, a PI thin film layer, a silicone layer, and a carbon fiber heating film layer are sequentially arranged at the bottom of the forming placement cavity. Micro / nano patterns are etched on the imprinting head, and a PDMS elastic layer is located at the lower end of the imprinting head. This invention, through the cooperation of the PI thin film layer, silicone layer, carbon fiber heating film layer, and microporous array, can adsorb, flatten, and preheat the FPC substrate before imprinting, fundamentally compensating for the deformation of the flexible substrate and providing a stable and flat reference plane for high-precision imprinting.

Provided is a coated article comprising a resinous base, a primer layer disposed on the resinous base, a hardcoat layer disposed on the primer layer, and an optically modified layer formed on a surface-layer portion of the hardcoat layer, wherein the primer layer is a cured coating film formed from a primer composition comprising (A) a vinyl-based (co)polymer and (B) inorganic particles having a given median diameter, the vinyl-based (co)polymer (A) including (A-1) a vinyl-based (co)polymer having an alkoxysilyl group and the primer layer having a thickness of 1-20 µm, and the hardcoat layer is a cured coating film formed from a silicone composition comprising (a) a silicone resin, (b) colloidal silica, and (c) an ultraviolet absorber, the hardcoat layer having a thickness of 1-15 µm.

The invention discloses a single-component dealcoholized silica gel for bonding a low-temperature glass ink coating and a preparation method of the single-component dealcoholized silica gel. The invention relates to a single-component dealcoholized silica gel for bonding a low-temperature glass ink coating, which is prepared from the following components in parts by mass: 1000 parts of 107 glue, 50 to 65 parts of cross-linking agent, 1000 to 1500 parts of filler, 60 to 100 parts of pigment, 10 to 15 parts of tackifier and 35 to 45 parts of titanium complex catalyst. Through the prepared tackifier, the application problem that a low-temperature glass ink coating is prone to paint peeling, paint biting and color changing is solved, and the adhesive property of the single-component dealcoholized silica gel to various base materials is improved.

The present invention provides a sulfonic acid-modified colloidal silica which has excellent long-term stability of metal adsorption amount and is capable of suppressing the amount of residual abrasive grains on a polished metal surface after polishing and cleaning.　This sulfonic acid-modified colloidal silica contains silica particles, and is characterized in that: (1) the surfaces of the silica particles are modified with a sulfonic acid group; (2) the Cu ion adsorption amount of the silica particles is 5.00-110.00 µmol / g; (3) the ratio (Cu ion adsorption amount (µmol / g) / S content (µmol / g)) of the Cu ion adsorption amount to the S content of the silica particles is 0.50 or more; and (4) the rate of change over time of the Cu ion adsorption amount of the silica particles is 1.30 or less as measured by the measurement method described below. [Measurement method of the rate of change over time of the Cu ion adsorption amount of the silica particles] The sulfonic acid-modified colloidal silica is left to stand at 25°C for 3 months. The Cu ion adsorption amount (µmol / g) of the silica particles before standing and the Cu ion adsorption amount (µmol / g) of the silica particles after standing are measured and the rate of change over time of the Cu ion adsorption amount of the silica particles is calculated by the following formula. (Rate of change over time of Cu ion adsorption amount of silica particles) = (Cu ion adsorption amount (µmol / g) of silica particles after standing) / (Cu ion adsorption amount (µmol / g) of silica particles before standing)

Provided is a colloidal silica which, when used as an abrasive grain for polishing, hardly leaves silica particles on the polished surface and can form a polished surface with reduced surface roughness. A colloidal silica in which silica particles are dispersed in a solvent, wherein the true specific gravity of the silica particles by the liquid phase substitution method is 1.60 or more and 2.20 or less, and the value of composite parameter 1 calculated by a specific formula is 10 or more and 200 or less.

A porous refractory cast material contains a closed refractory aggregate fraction having a minimum particle size and a maximum particle size; the ratio of maximum particle size to minimum particle size is 10:1 or less. This closed refractory aggregate fraction comprises all of the porous refractory cast material having a particle diameter greater than 0.1 mm. The porous refractory cast material also contains a binder phase containing refractory selected from calcium aluminate cement, alumina phosphate, hydratable alumina, colloidal silica and combinations thereof. Also disclosed is a metallurgical vessel with an interior lining incorporating the porous refractory cast material.

The present invention provides colloidal silica that exhibits excellent abrasiveness and contains, with high purity, deformed silica particles with excellent compactness and a large amount of alkoxy groups per unit area; the invention also provides a method for producing the colloidal silica in a simple manner with reduced costs. The invention provides colloidal silica containing silica particles having a bent structure and / or a branched structure, wherein the silica particles have a particle density of 1.95 or more, the silica particles have a ratio (m / n) of the content of alkoxy groups m (ppm) to the average primary particle size n (nm) of 200 or more, and the silica particles having a bent structure and / or a branched structure are present in an amount of 15% or more based on the number of particles in a given field of view as observed with a scanning electron microscope at 200,000-times magnification.

Provided is an aqueous inorganic coating agent capable of forming a coating film having high antifogging properties. [Solution] The aqueous inorganic coating agent comprises small-particle colloidal silica having an average particle diameter of 3 nm or more and 10 nm or less, large-particle colloidal silica having an average particle diameter of more than 10 nm and 100 nm or less, at least one of a sodium phosphate compound and a potassium phosphate compound, boric acid, and water.

The invention belongs to the technical field of silica gel coating, and particularly relates to an automatic silica gel coating device and method for a cylindrical thin-wall body. The device comprises a rack, and a material rotating mechanism, an inner ring gluing mechanism, an outer ring gluing mechanism, a glue supply mechanism and a grating safety system are arranged on the rack; the grating safety system is arranged on the front side of the rack, the inner ring gluing mechanism and the outer ring gluing mechanism are located on the two sides of the material rotating mechanism, and the glue supply mechanism is located on the rear side of the rack. A material pressing mechanism is arranged over the material rotating mechanism, a controller is further arranged on the rack, and the material rotating mechanism, the inner ring gluing mechanism, the outer ring gluing mechanism, the material pressing mechanism, the glue supply mechanism and the grating safety system are all electrically connected with the controller. Through the cooperative operation of the material rotating mechanism, the inner ring gluing mechanism and the outer ring gluing mechanism and the precise regulation and control of the controller on the glue supply flow, the pressing force and the motion trail, high-quality automatic coating on the inner wall and the outer wall of a cylindrical object or the outer wall of a columnar object is achieved.

The invention provides a preparation method of a hydrophobic silver nanoparticle doped coating, which comprises the following specific steps: preparing silicon shell silver chloride nanoparticles (AgCl (at) SiO2NPs) by taking cetyltrimethylammonium chloride (CTAC), silver nitrate, sodium chloride and tetraethyl orthosilicate (TEOS) as raw materials through a one-pot method, and introducing carbon-carbon double bonds by 3-(methacryloyloxy) propyltrimethoxysilane (MPS) under an acidic condition. In the subsequent distillation-precipitation polymerization process, 4-chloromethyl styrene (VBC) is grafted with chloromethyl, and finally, perfluoropolyether methyl acrylate (PFPEMA) is introduced through atom transfer radical polymerization (ATRP) to form AgCl (at) SiO2-F NPs. Nanoparticles are added into polydimethylsiloxane (PDMS) to be evenly mixed, a silica gel catheter is used for pulling and curing to form the hydrophobic nanoparticle coating SR-F. The hydrophobic nanoparticle coating SR-F is mature in step, firm in film and good in hydrophobicity, and experimental results show that the coating has long-acting antibacterial ability.

The invention relates to the technical field of photovoltaic power generation, and discloses a photovoltaic module frame bonding structure and a glue overflow prevention method thereof.The system comprises a clamping groove structure and a frame, and the section shape, the depth and the width of the clamping groove structure and the protruding height and the inclination angle of a matching part are calculated and determined through a preset intelligent algorithm model; a silica gel strip is clamped between the clamping groove structure of the frame and the matching part of the photovoltaic module, the section size and the hardness parameter of the silica gel strip are matched with the gap parameter of the clamping groove structure and the matching part output by the intelligent algorithm model, and the two side faces of the silica gel strip are in interference fit with the inner wall of the clamping groove structure and the outer surface of the matching part respectively; the geometric parameters of the clamping groove structure and the matching part are determined through an intelligent algorithm model, the customized size and hardness of the silica gel strip are combined, elastic pressing connection and sealing of the frame and the edge of the photovoltaic module are achieved, and the compression deformation quantity of the silica gel strip under the high wind pressure load is limited within a preset safety threshold value so as to reduce the hidden crack risk of a battery piece.

Provided is a water-based inorganic coating agent capable of forming a coating film having high antifouling properties and excellent abrasion resistance. The aqueous inorganic coating agent includes colloidal silica, at least one of a sodium phosphate compound and a potassium phosphate compound, boric acid, aluminum monophosphate, and water.

1. The name of the design product: LED silica gel face brush. 2. The use of the design product: LED silica gel face brush. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective drawing.

The utility model discloses tempered glass capable of preventing corners from cracking, which belongs to the technical field of tempered glass and comprises a glass body, a nano coating is coated on the lower side of the glass body, and a silica gel coating is coated on the upper side of the glass body. Then the two ends of the glass body and the two ends of the protection plate are inserted into the grooves and the inserting grooves of the protection bases correspondingly, when the arc-shaped edges at the two ends of the protection plate make contact with the arc-shaped blocks, the arc-shaped blocks are pushed to enter the cavities, the sliding rods slide in the protection bases, and the springs are compressed; after the protection plate completely enters the inserting groove, a spring elastically stretches to push an arc-shaped block at one end of a sliding rod to enter a clamping groove of the protection plate, the effect of limiting and fixing the protection plate and the protection base is achieved, the protection base and the protection plate protect the corners and the side edges of the glass body, and the protection range of the glass body is wider by arranging the protection assembly; and the protection quality of the glass body is improved.

The utility model relates to the technical field of dies, and particularly discloses a forming die for a liquid silica gel coated flexible circuit board. Wherein the upper die assembly comprises an upper die plate and an upper die core; the lower die assembly comprises a lower die plate, a lower die core, an insert assembly arranged on the lower die core, an ejection assembly used for ejecting the insert assembly and a positioning insert arranged on the insert assembly and used for fixing a coated structure. In the forming process, the coated structure does not shift, and the forming effect is good.

1.The name of the design product: palm protection (square silica gel). 2.The use of the design product: square silica gel palm protection. 3.The design points of the design product: the combination of shape, pattern and color. 4.The picture or photo that best shows the design points: perspective view. 5.The design claimed contains color.

Problems addressed by the present invention are to provide a lubricant composition that is capable of being used as an alternative to chemical conversion treatment by means of phosphate, to provide a lubricant composition having practical stable lubricative performance without the need for additional unwanted operations, and to provide a method for using this to form a lubrication coating, and a metal workpiece at which a lubrication coating is formed on a surface thereof. Provided as a means for solving such problems is a lubricant composition for causing formation of a hemimorphite-containing lubrication coating that contains a silicate compound (e.g., colloidal silica) and water-soluble zinc in solution.

The invention discloses a composite silica gel protective film with an anti-blue-light function and a preparation method thereof. The protective film comprises an anti-blue-light functional layer, a base material layer and a hardened coating which are sequentially stacked. The protective film not only can efficiently filter blue light, but also can keep good light transmission, scratch resistance and physical properties, has the characteristics of easiness in preparation and controllable cost, and can meet the diversified requirements of modern electronic equipment on the screen protective film. The anti-blue-light function layer is good in anti-blue-light effect and has excellent absorption performance on ultraviolet light and blue light in the wave band of 280 nm to 420 nm, the blocking rate on the high-energy blue light wave band can reach 98%, the blue light blocking efficiency is stable, and the ultraviolet / blue light blocking rate can be kept at a high level after aging. Wherein the hardened coating has a good scratch-resistant effect, the pencil hardness (500g) can reach 3H, the wear resistance of the matrix is effectively enhanced, and the light transmission of the protective film is improved.

The invention relates to the technical field of coating equipment, and particularly discloses a glass fiber cloth surface silica gel blade coating device which comprises a base, a first roller frame is arranged at the position, close to the rear end, of the base, a first guide roller is movably installed at the other end of the first roller frame and can rotate, and a turnover structure is arranged on the upper wall of the base. The overturning structure is located on the front side of the first roller frame, a material collecting structure is fixedly arranged on the overturning structure, and a blade coating structure is detachably arranged on the material collecting structure; the first guide roller is used for guiding cloth input, the overturning structure is used for controlling the orientation of the material collecting structure and the blade coating structure and switching of single-face blade coating or double-face blade coating of cloth, the material collecting structure is used for collecting glue liquid and used for cloth of different thicknesses, and the blade coating structure is used for conducting blade coating on cloth glue and limiting the coating thickness. And angle overturning of the material collecting structure and the blade coating structure is achieved through the overturning structure, and switching between single-face coating and double-face coating can be rapidly completed without manually overturning cloth or replacing equipment.

The present invention relates to a sol-gel finishing layer for a non-stick coating of a household item, said layer being free of silica. No figure