21results about How to "Curing stability" patented technology

The invention relates to a circuit board processing method, in particular to a circuit board pressure transmission method, which comprises the following steps of: providing a film, arranging the film on a substrate, performing vacuum pressurization film pasting, and keeping a first electric heating temperature and a first electric heating duration in the process, so that the film is pasted on the substrate; carrying out first-stage baking on the substrate pasted with the film, and keeping a first baking temperature and a first baking duration in the process; carrying out second-stage baking on the substrate pasted with the film, and keeping a second baking temperature and a second baking duration in the process; wherein the second baking temperature is higher than the first baking temperature, and the second baking duration is longer than the first baking duration; the film comprises a resin functional layer and a carrier layer, and when the film is arranged on the substrate, one side of the resin functional layer of the film faces the substrate. By means of the structure, the film can be efficiently attached to the substrate in a high-quality mode through the arrangement of the carrier layer and the method that electric heating is matched with multi-section baking.

The present application relates to the field of tape application, more specifically, it relates to an acrylic foam tape and a preparation method thereof, and specifically discloses an acrylic foam tape and a preparation method thereof. The acrylic foam tape comprises an acrylic foam substrate and an acrylic pressure-sensitive adhesive coated on one side or both sides of the acrylic foam substrate; the preparation method thereof is as follows: coating the acrylic pressure-sensitive adhesive on one side or both sides of the acrylic foam substrate, covering the side of the acrylic pressure-sensitive adhesive away from the acrylic foam substrate with a release film, and heating the acrylic pressure-sensitive adhesive in an oven at 80 to 110°C for 4 to 6 hours to prepare the acrylic foam tape. The acrylic foam tape of the present application can be used in different mechanical parts, mobile phone accessories, and computer electronic products. It has the advantages of reducing the residual pressure-sensitive adhesive on the electronic product after peeling off the acrylic foam tape, so that the bonding strength between the newly replaced parts and the electronic product is not easily affected.

The present invention discloses a dual-motor magnetorheological fluid brake device, comprising a housing and an axle, wherein the housing is surrounded by front and rear bottom plates and side plates to form a cylindrical working chamber, wherein the axle passes through the front and rear bottom plates and is arranged in the working chamber, wherein the axle is connected to the front and rear bottom plates respectively through bearings, wherein a sealing cylinder is arranged in the working chamber, wherein the inner surfaces of the front and rear bottom plates are provided with two annular protrusions, wherein the left and right ends of the sealing cylinder are respectively clamped in the inner annular protrusions of the front and rear bottom plates, and after being assembled with the front and rear bottom plates, a sealing chamber for containing magnetorheological fluid is formed; wherein a brake disc and two groups of magnetic conductive modules are arranged in the sealing chamber, wherein the magnetic conductive modules are respectively arranged on the bearings of the front and rear bottom plates and rotate coaxially with the axle; wherein the brake disc is arranged on the axle and is located between the two groups of magnetic conductive modules and rotates coaxially with the axle. The present invention utilizes the instantaneous solidification characteristics of the magnetorheological fluid after being magnetized to wrap the brake disc and apply braking force, which will greatly reduce the degree of wear on the workpiece and extend the service life of the product.

The application discloses fluorosilicate glass, a preparation method and application thereof, and directly uses fluorine-containing sludge and lithium tailings as raw materials, and the mass ratio of the fluorine-containing sludge and the lithium tailings is 3:7-7:3; the mixed materials are high-temperature melted at 1500-1550 DEG C for 1-1.5 h, and after casting forming, annealing is carried out at 600-650 DEG C, so that the base microcrystalline glass is obtained; then, heat treatment is carried out at 10K / min to 950-1050 DEG C for 1-2 h, so that complex crystal phases of albite and calcium fluoride are precipitated. The application realizes glass solidification of the fluorine-containing sludge, and fluorine ions are solidified in CaF2 and a glass network; the obtained microcrystalline glass has a Vickers hardness of 6.3-6.7 GPa, meets the requirements of building and decoration materials, and can be widely used in floor tiles, wall decoration plates and the like. The method simultaneously disposes of two kinds of solid wastes, realizes'material preparation from waste', and has the advantages of environmental friendliness and economic benefits.

This invention relates to the field of hydrometallurgical technology, specifically disclosing a method for smelting ionic rare earth ores based on synergistic precipitation and resource recycling, comprising the following steps: S1: Water, ionic rare earth ore, and ferric hydroxide are added to a reaction vessel, and hydrochloric acid is added. During the reaction, after detecting that the residual acidity is greater than 0.3 mol / L, barium chloride is added quantitatively according to the sulfate content; S2: A pH adjuster is added to the reaction system and the temperature is controlled for adjustment. The pH is first adjusted to 2.5-3 and then to 4.5 to form a stepwise precipitation. After the reaction, clarification and separation are performed to obtain supernatant A and concentrate A; S3: The obtained concentrate A is reacted with liquid alkali in an alkali-to-alkali conversion reaction. After the alkali conversion, the alkali slurry is fed into... After washing and filtration, alkali cake residue is obtained; S4: The obtained alkali cake residue is mixed with supernatant A and the pH is adjusted to 5.2. The temperature is controlled at 80℃. After the reaction is clarified, the adjusted residue and supernatant B are obtained; S5: The adjusted residue obtained in S4 is added to acid for leaching. The residual acidity is controlled to be greater than 0.5 mol / L. After the reaction is clarified, supernatant C and concentrate C are obtained; S6: The pH of supernatant C obtained in S5 is adjusted in stages. First, the pH is adjusted to 2.0, and then the pH is stabilized at 3.5. After the reaction, supernatant D and concentrate D are obtained; S7: The pH of supernatant D obtained in S6 is adjusted again and stabilized at 5.2. After the reaction, supernatant E and concentrate E are obtained.

The present application relates to the technical field of adsorption material preparation and heavy metal treatment, and particularly relates to a silicate-chloroapatite composite material, a preparation method and application thereof. The present application proposes a mechanism of "mineral phase reconstruction and functional component synergistic construction of high-density and high-energy adsorption sites", utilizes the characteristic of coexistence of multiple mineral components, and through synergistic induction of calcium source and phosphorus source, promotes the original mineral phase to be reconstructed into an amorphous porous silicate matrix with higher activity (adsorption site energy is higher), and in-situ generates chloroapatite with strong immobilization capacity for heavy metals. This not only realizes mineral structure activation and porous structure construction, but also forms a synergistic effect of silicate and chloroapatite in the adsorption process: chloroapatite and heavy metals such as lead form stable phosphorus-chlorine-lead ore solidification products, and the reconstructed silicate and calcium ions provide efficient ion exchange sites, improve the site energy of the adsorption sites, and thus improve the removal efficiency of heavy metals in a wide concentration range.

The utility model discloses an adjustable monocrystalline silicon round rod splicing device, which comprises a base, a first sliding seat, a second sliding seat, a fixed seat, a baffle plate and a push plate, a sliding groove positioned in front of the fixed seat is concavely arranged on the base, the first sliding seat and the second sliding seat are transversely arranged in the sliding groove, the second sliding seat is positioned in front of the first sliding seat, and the baffle plate is positioned in front of the first sliding seat. The top face of the fixed seat is flush with the top face of the first sliding seat, a plurality of rolling supporting devices are arranged on the front portion and the rear portion of the fixed seat respectively, each rolling supporting device comprises two rollers distributed at intervals in the longitudinal direction of the base, a guide hole is horizontally formed in the base, a pull rod extending backwards is arranged in the guide hole, and the baffle is vertically arranged on the pull rod. A vertical frame located in front of the first sliding base is arranged on the second sliding base, and the push plate is arranged behind the vertical frame in a transverse moving mode. According to the adjustable monocrystalline silicon round rod splicing device disclosed by the utility model, two sections of monocrystalline silicon round rods are horizontally placed and spliced, and the adjustment is convenient.

The present invention discloses a pre-lithiation coated lithium cobalt oxide positive electrode material and a preparation method thereof, wherein the preparation method comprises the following steps: (1) adding lithium cobalt oxide to anhydrous ethanol and mixing; (2) adding tin tetrachloride and lithium hydroxide to the mixed solution of step (1), and adding a carbon source to mix; (3) evaporating the mixed solution obtained in step (2); (4) calcining the material evaporated in step (3) in an oxygen-containing atmosphere, cooling, washing, and drying. The positive electrode material prepared by the method has excellent conductivity and cycle performance.

The utility model relates to the technical field of copper foil production and processing, and provides a coil pressing device for copper foil production, which comprises a device body, the top of the device body is fixedly provided with an air cooler, the other end of a first air outlet pipeline is fixedly connected with a pipeline joint, and second air outlet pipelines are fixedly embedded in the centers of the two sides of the pipeline joint. When the copper foil pressing device is used, the gap between the first pressing roller and the second pressing roller can be adjusted through the air cooler, the screw and other structures, the deformation degree of copper foil in the pressing process can be controlled through the device, the flexibility of the device is improved, and the copper foil pressing device is convenient to use. And meanwhile, through the combination of the air cooler and the spray head, cold air can be quickly blown to the surface of the copper foil, the temperature of the copper foil is quickly reduced, the cooling speed is increased, and quick curing and stabilization of deformation of the copper foil are facilitated.

The invention belongs to the technical field of mortar curing, and discloses a mortar curing process, which comprises the following raw material components by weight: 50 kg of cement; 20 kg of water; 80 kg of aggregate; 6 kg of a curing agent; the aggregate is a mixture of quartz sand, lignite and sand in a weight ratio of 4: 2.5: 3.5. The cement, the water, the aggregate and the curing agent are accurately proportioned, so that the comprehensive performance of the mortar is remarkably improved; by adding the curing agent, the moisture balance of the mortar is effectively adjusted, and the phenomenon of too fast dehydration or saltpetering caused by unstable raw material quality and moisture content in the traditional process is avoided; under the condition of proper temperature and humidity, the mortar can be uniformly and stably cured to form a bonding layer with high strength and good durability; according to the process, the construction efficiency is improved, the later maintenance and repair cost is reduced, and powerful support is provided for quality assurance of constructional engineering.

The invention discloses injectable photocuring hydrogel for bone tissue repair and a preparation method and application thereof.The method comprises the steps that at the room temperature, SA, HA, AAm, MBA, Hmpp and Acc-NHS are added into deionized water to be dissolved, and a precursor solution is obtained; under the condition of high-speed mechanical stirring, dropwise adding a CaCl2 aqueous solution into the precursor solution, and continuously stirring, so that a sodium alginate chain segment and calcium ions are subjected to ionic cross-linking, and injectable ionic cross-linking hydrogel with the shear thinning characteristic is obtained; and adding HAp into the injectable ionic crosslinking hydrogel under the condition of keeping high-speed mechanical stirring, and continuously stirring to obtain the injectable photocuring hydrogel with the bone repair function. The hydrogel disclosed by the invention has excellent injectable performance, controllable light curing conversion capability, relatively high mechanical strength, wet interface adhesion performance and bone repair potential, and is expected to be used as a minimally invasive implantable medical device for repairing bone tissue injury.

A curing device comprises a shell provided with a containing cavity, a feeding position and a discharging position. The conveying assembly is connected with the shell; the two groups of material moving assemblies are respectively arranged at a feeding position and a discharging position; the detection assembly is provided with a dust detection piece connected with the shell and a temperature and humidity detection piece arranged adjacent to the conveying assembly; the adjusting assembly is provided with a dust removal part electrically connected with the dust detection part and the temperature and humidity detection part and a humidification part electrically connected with the temperature and humidity detection part. The curing device detects the number of particles in the storage cavity and the temperature and humidity in the storage cavity through the dust detection part and the temperature and humidity detection part. The dust removal piece and the humidification piece are used for adjusting the dust quantity parameter, the temperature parameter and the humidity parameter in the curing environment in the storage cavity in real time based on detection information of the dust detection piece and detection information of the temperature and humidity detection piece correspondingly, so that the workpiece is stably cured in the curing environment, and the curing stability of the workpiece is improved; and feeding and discharging operation is automatically completed through the two material moving assemblies, and the production efficiency is improved.

The invention discloses a high-air-tightness COB light source structure which comprises a substrate, a circle of box dam rubber ring is arranged on the upper surface of the substrate, a die bonding groove is defined by the box dam rubber ring, a plurality of LED chips are arranged in the die bonding groove of the substrate, and the die bonding groove of the substrate is filled with fluorescent powder glue so that the LED chips can be wrapped by the fluorescent powder glue. The upper surface of the fluorescent powder glue is covered with an isolation glue layer, the joint between the isolation glue layer and the box dam rubber ring is provided with a circle of covering rubber ring, and the manufacturing method comprises the following steps: arranging a plurality of LED chips in a light source area on the upper surface of the substrate; a circle of box dam rubber ring surrounding the light source area is arranged on the upper surface of the substrate, and heating and pre-curing are conducted; the solid crystal groove is filled with fluorescent powder glue, and heating and pre-curing are carried out; spraying isolation glue on the upper surface of the fluorescent powder glue and the top of the box dam rubber ring, heating and curing to form an isolation glue layer, and enabling the isolation glue layer to cover the whole upper surface of the fluorescent powder glue and the top of the box dam rubber ring; and a covering rubber ring is arranged at a connecting gap between the isolation rubber layer and the box dam rubber ring, and heating and pre-curing are carried out.

The invention discloses a terminal upgrade global updating method and system, a vehicle, equipment, a medium and a product, and belongs to the technical field of automobile networking, the method comprises the steps that an updating package corresponding to a target service is acquired through a first system, and the updating package comprises a first application program of the target service on the first system and a second application program of the target service on the second system; at least one second application program of the target service on the second system, and the update package is configured to store the second application program in a second resource directory after the update package is installed; installing the update package through the first system; obtaining a second application program of the target service through a second system; executing upgrading and updating through the second system according to the second application program; wherein the first system is a system supporting hot update, and the second system is a system not supporting hot update. And other systems which do not support hot update can be endowed with hot update capability through the system which supports hot update. Script logic can be repaired through the cloud at any time, and convenience of problem repair is improved.

The invention discloses temporary filling equipment for the inner diameter of a ring and an application method of the temporary filling equipment, and belongs to the technical field of jewelry repair, a ring can be stably fixed by a special ring bracket and a clamping pad of the equipment, and smooth implementation of shadowless glue brushing and ultraviolet curing processes is ensured. By means of the design, an operator can easily control the position and angle of the ring, the accuracy and uniformity of the filling effect are improved, shadowless glue is used as a filling material, good flexibility and adhesive force are achieved, no trace is left or attractiveness is affected after curing, and the original appearance of the ring is kept. And the filled surface is smooth and flat, the appearance quality is improved, and aesthetic requirements are met. Generally speaking, the finger ring size adjusting process is simplified, the operation efficiency and accuracy are improved, meanwhile, the attractiveness and the appearance quality are kept, and the finger ring size adjusting method has wide market prospects and commercial value in practical application.

The invention provides a chip thick film micro-coating method which comprises the following steps: S1, mixing a gas sensitive material, an organic solvent and an adhesive to prepare a mixed solution; s2, micro-coating the surface of a chip electrode with the mixed solution, and then curing; the gas sensitive material comprises tin dioxide and precious metal salt; the adhesive comprises at least one of organic acid and alcohol; the thickness of the micro coating is 8 [mu] m to 12 [mu] m; and the pressure of the micro coating is 0.1 MPa to 0.5 MPa. The adhesive is organic acid and alcohol, so that the gas sensitive material can be adhered, and a mixed solution formed by the gas sensitive material, the adhesive and the organic solvent has excellent flowability and stability, so that the gas sensitive material is uniformly dispersed in the mixed solution; and in the subsequent sintering process, the adhesive and the organic solvent are removed from the mixed solution system, so that the surface of the chip electrode is uniformly coated with the gas sensitive material, and the micro-coating of the thick film is realized.

The invention discloses a Janus particle based on chitosan and esterified starch as well as a preparation method and application of the Janus particle. The preparation method of the Janus particles based on the chitosan and the esterified starch comprises the following steps: 1) preparing the esterified starch; (2) preparing a chitosan-esterified starch compound; 3) preparing an oil-in-water emulsion; and 4) carrying out suction filtration on the oil-in-water emulsion, washing the filtered solid with a sodium chloride-acetic acid solution, adding the solid into an organic solvent, carrying out ultrasonic treatment and centrifugation, and taking the centrifuged solid, thereby obtaining the Janus particles based on the chitosan and the esterified starch. The starch-based Janus particle is prepared by taking natural starch as a raw material, the preparation method is simple to operate, mild in condition, safe, environment-friendly and low in cost, the high-quality starch-based Janus particle which can be used as an emulsifier or a thickener is finally prepared, and the starch-based Janus particle is suitable for large-scale industrial production and application.

The invention belongs to the technical field of preparation of photocuring ink, and provides photocuring ink capable of resisting electrolytic etching of a novel process. The light-cured ink is prepared from the following raw materials: modified epoxy resin UV-1, acrylic acid modified epoxy resin UV-2, dipentaerythritol hexaacrylate, pentaerythritol tetraacrylate, trimethylolpropane triacrylate, trifunctional acid ester, tripropylene glycol diacrylate, gamma-methacryloxypropyltrimethoxysilane, 3-(2, 2, 6-trimethyl-1, 3, 6-trimethyl-1, 3, 6-trimethyl-1, 3, 6-trimethyl-1, 3, 6-trimethyl-1, 3, 6-trimethyl-1, 3, 6-trimethyl-1, 3, 6-trimethyl-1, 3, 6-trimethyl-1, 3, 6-trimethyl-1, 3, the invention relates to a light-emitting diode (LED) light-emitting diode (LED) light-emitting diode (LED) light-emitting diode (LED) light-emitting diode (LED) light-emitting diode (LED) light-emitting diode (LED) light-emitting diode (LED) light-emitting diode (LED) light-emitting diode (LED) light-emitting diode (LED) light-emitting diode (LED) light-emitting diode (LED) light-emitting diode (LED) light-emitting diode (LED) light-emitting diode (LED) light-emitting diode (LED) light-emitting diode (LED) light-emitting diode (LED) light-emitting diode (LED) light-emitting diode (LED) light-emitting diode (LED) light-emitting diode (LED) light-emitting diode (LED) light-emitting diode (LED) light-emitting diode (LED) light-emitting diode (LED) light-emitting diode (LED); the light-cured ink provided by the invention can show excellent corrosion resistance in the electrolytic etching process, and effectively prevents electrolyte from corroding the ink.

This invention discloses a branched vinylphenyl polysiloxane and its preparation method, comprising the following steps: mixing vinyl difunctional chain silane monomers, phenyl difunctional chain silane monomers, alkyl difunctional chain silane monomers, a solid acid catalyst, and acetic acid in a certain proportion, and performing a reflux reaction; filtering out the solid acid catalyst by cooling to obtain a first filtrate, and distilling it at atmospheric pressure to obtain a polysiloxane precursor; adding a trifunctional chain silane monomer, a capping agent, acetic acid, and a solid acid catalyst to the polysiloxane precursor, and reacting; filtering out the solid acid catalyst to obtain a second filtrate, and distilling it at atmospheric pressure to obtain a branched vinylphenyl polysiloxane with a vinyl content of 1.0~3.0% and a silanol content ≤0.1%. It can be used for surface modification of fillers in addition silicone rubber systems to improve the mechanical properties and system compatibility of materials, and solve the problems of few modified active sites and weak interfacial forces, as well as the problem that high silanol content affects the curing and adhesion of addition systems.

The utility model relates to a resin lens photocuring forming machine which comprises a working table module, the working table module is provided with a working table support, a working table top is fixedly arranged at the upper end of the working table support, and a preheating component, a UV (ultraviolet) photocuring component and a conveying belt component are fixedly arranged on the working table top from front to back. The conveying belt component is respectively matched with the preheating component and the UV curing component, the preheating component comprises at least one group of infrared heating tubes, the UV curing component comprises at least one group of LED ultraviolet lamps, and the conveying belt component comprises a flat plate hinge conveying belt, a conveying belt motor and a plurality of lens placing groove bodies. According to the technical scheme, the structure is reasonable, three functional areas of preheating, curing and cooling are included, and the curing forming process of the resin lens can be completed through one machine.

The present invention relates to the field of semiconductor device technology, and in particular to a chip edge structure and a manufacturing method thereof. The chip edge structure comprises an edge main structure layer, a passivation layer and an organic film layer, wherein the passivation layer is arranged on the surface of the edge main structure layer along a preset direction, and the passivation layer has at least one recessed area; the organic film layer is arranged on the surface of the passivation layer along a preset direction, and fills each recessed area. Since the organic film layer fills the recessed area of ​​the passivation layer, the organic film layer can be firmly solidified with the passivation layer, and therefore, the passivation layer is not prone to peeling or falling off during the process.