229results about How to "Improve the level of" patented technology

The invention relates to an epoxy resin adhesive composition and a preparation method thereof, and belongs to the technical field of high-performance polymer material modification and electronic packaging materials, and the epoxy resin adhesive composition comprises the following components by weight: 100 parts of basic epoxy resin; 5-30 parts of a hyperbranched liquid crystal modifier; adding the curing agent according to a stoichiometric ratio; 100 to 600 parts of a heat-conducting filler; 0.1-5 parts of an accelerant and an auxiliary agent; the hyperbranched liquid crystal modifier has a core-shell structure and is prepared from a hydrogen-containing hyperbranched polysiloxane core and an alkenyl-terminated liquid crystal epoxy monomer through a hydrosilylation reaction under the action of a catalyst, the hyperbranched polysiloxane core is introduced, the friction resistance among high-concentration fillers is reduced by utilizing the torispherical structure of the hyperbranched polysiloxane core, and the hyperbranched liquid crystal modifier has the advantages that the friction resistance is reduced; under the condition that 350 parts of heat-conducting filler is filled, the modifier is added, so that the high-filling system still has excellent flowability and leveling property while keeping high heat-conducting property, and is suitable for high-precision micro-encapsulation scenes; the heat conductivity of the scheme is obviously superior to that of a system which does not use the modifier or does not adopt a stepped heating process.

The invention discloses an optical film, a preparation method thereof and a display device, and relates to the technical field of optical functional films. The optical film comprises a base film layer and an antistatic coating arranged on the surface of at least one side of the base film layer. The antistatic coating comprises the following raw material components: water-dispersible polyester resin, water-soluble resin, a cross-linking agent and an antistatic agent; the antistatic agent is obtained by compounding a single-walled carbon nanotube modified with a hydrophilic group and polyaniline acid, the antistatic agent comprises an inner core and a coating layer at least partially coating the inner core, the inner core comprises the single-walled carbon nanotube modified with the hydrophilic group, and the coating layer comprises the polyaniline acid. According to the optical film, the single-walled carbon nanotubes and the polyaniline acid form a composite conductive structure, and then the composite conductive structure is crosslinked with the water-soluble resin and the crosslinking agent to form a three-dimensional conductive network structure, so that the optical film obtains lasting and efficient antistatic performance with extremely low environmental humidity dependence on the premise of keeping high light transmittance, low haze and good coating adhesiveness.

The invention belongs to the technical field of traditional Chinese medicine, and particularly relates to a medicine patch needle for preventing and treating allergic rhinitis and a preparation method and application thereof. The medicine patch needle mainly comprises a traditional Chinese medicine composition and a medicine patch thumbtack needle, and the traditional Chinese medicine composition is prepared from, by weight, 30-60 parts of radix astragali, 15-30 parts of radix angelicae sinensis, 10-25 parts of radix saposhnikoviae, 10-30 parts of rhizoma atractylodis, 10-30 parts of rhizoma acori graminei, 5-15 parts of herba asari, 10-30 parts of rhizoma chuanxiong, 10-20 parts of radix angelicae and 1-5 parts of borneol. The medicine needle patch can be used for preventing and treating allergic rhinitis, mild and lasting acupuncture stimulation is achieved on the skin part of the acupoint, the medicine can rapidly enter the acupoint along with the needle hole, in other words, the acupoint achieves the effects of harmonizing qi and blood, relieving stuffy nose and removing pathogenic qi under the dual action of the acupuncture stimulation and the medicine, and the medicine needle patch has the remarkable preventing and treating effect on the allergic rhinitis.

This invention relates to the field of anti-corrosion coating technology, specifically to a water-based corrosion-inhibiting anti-corrosion coating and its preparation method. When zinc phosphate is used alone as a corrosion inhibitor in water-based anti-corrosion coatings, it tends to agglomerate and has poor compatibility with resins. The protective coating formed on the metal surface by these water-based anti-corrosion coatings exhibits poor and unstable corrosion resistance. To address these problems, this invention provides a water-based corrosion-inhibiting anti-corrosion coating composed of two components, A and B. Component A contains a self-made composite corrosion inhibitor, ZnP-PEG-IPTS-GO. This composite corrosion inhibitor, through the bridging of IPTS, chemically bonds GO, PEG, and zinc phosphate, achieving an organic combination of "physical shielding" and "active passivation," significantly improving the overall anti-corrosion performance of the coating.

The utility model provides a kind of wire box positioning device, including fixed frame, the fixed frame is fixed by screw and is arranged on the wall of wire box to be installed, first sliding slot and second sliding slot are respectively arranged in the length and width direction of the inner side of the fixed frame along the fixed frame, a plurality of pairs of first positioning rods are slidably arranged in the first sliding slot, a pair of second positioning rods are arranged in the second sliding slot, the first positioning rod and the second positioning rod surround several wire box installation positions with adjustable position, a fixed hole is arranged in the upper frame of the fixed frame, a screw is arranged in the fixed hole, the screw is fixed on the wall on the upper side of wire box to be installed, the fixed frame can rotate with screw as axis center, to facilitate the leveling of fixed frame.

The application relates to the field of metal part processing devices, in particular to an ultrasonic rolling device for metal parts. The device comprises a connecting plate, a rotating seat is arranged at the upper end of the connecting plate, an electric telescopic rod is fixed at one side of the lower end of the connecting plate, an ultrasonic roller is fixed at the other side of the lower end of the connecting plate, a fixed plate is fixed on the telescopic rod of the electric telescopic rod, a plurality of inclined movable rods are hingedly connected to the lower end of the fixed plate, the plurality of inclined movable rods are arranged according to the circumferential distribution of the axis of the fixed plate, and two adjacent movable rods are connected through a distance measuring assembly. The distance measuring assembly is used for measuring the distance between the two movable rods connected thereto. When the levelness of the workpiece is measured, the plurality of movable rods are controlled to descend simultaneously through the electric telescopic rod, the lower ends of the plurality of movable rods are in contact with the upper end of the workpiece, the distance between the movable rods is measured through the distance measuring assembly, whether the workpiece is vertical is determined according to the measured data, and therefore the efficiency of measuring the levelness of the workpiece is high.

The invention belongs to the technical field of power electronics, and provides a multi-degree-of-freedom general carrier modulation method and system for a current source converter, and the method comprises the steps: constructing a modular cascade current source converter; a sine pulse width sequence is output through carrier modulation to analyze direct-current side voltage harmonic distribution in the constructed modular cascade current source type converter; determining the optimal phase shift angle of the modular cascade current source type converter by taking the sine pulse width sequence waveform quality, the switching frequency and the DC voltage performance optimization as optimization targets according to the distribution result of the DC side voltage harmonic waves; and adjusting the three-phase carrier wave of each current source module in the current source type converter based on the determined optimal phase shift angle, and completing multi-degree-of-freedom general carrier wave modulation of the current source type converter.

This invention discloses a high-gloss, high-hardness water-based single-component acrylic industrial decorative topcoat and its preparation method. The topcoat, by weight percentage, comprises: 50%-65% high-gloss hydroxyl acrylic emulsion, 5%-10% silicone-modified acrylic resin, 2%-5% flake-shaped nano-aluminum powder treated with a silane coupling agent, 2%-8% pH-responsive microcapsule crosslinking agent, 0.5%-1.5% anti-flash rust agent, 0.1%-0.5% hydrophobic leveling agent, 0.5%-1.5% thixotropic polyurethane thickener, 0.2%-0.8% pH adjuster, and 0.5%-1.5% wetting and dispersing agent, etc. This invention, by introducing a pH-responsive microcapsule crosslinking agent and flake-shaped nano-aluminum powder, achieves stability of the single-component coating during storage and deep crosslinking after application. The resulting paint film has excellent gloss (60°≥90), high hardness (≥H) and outstanding corrosion resistance (salt spray resistance ≥400h), which solves the contradiction between the insufficient protective performance of existing water-based single-component acrylic topcoats and the poor decorative properties of high-performance anti-corrosion coatings.

The application belongs to the technical field of waterborne polyurethane preparation, and particularly relates to a solvent-free photocuring polyurethane and a preparation method thereof, which comprises the following steps: 1) mixing 1,6-hexane diisocyanate trimer, hydroxypropyl acrylate and a polymerization inhibitor at 55-65 DEG C, and obtaining a PUA prepolymer after reaction; 2) mixing the PUA prepolymer, epoxy acrylate resin, hydrogenated rosin glyceride, an active diluent mixture containing a photoinitiator, PETMP, a tertiary amine type co-initiator, a silane coupling agent and a polymerization inhibitor, stirring, defoaming, filtering, and obtaining the solvent-free photocuring polyurethane; the application has the advantages of fast curing speed and high storage stability.

The invention discloses an application of an intestinal strain in preparation of a cholesterol-lowering product, and belongs to the technical field of microbial medicines. The intestinal bacterial strain is Oscillibacter ruminant, the viable bacteria concentration of the intestinal bacterial strain is controlled to be (4.8-5.2) * 10 < 9 > CFU / mL, the intestinal bacterial strain can be prepared into bacterial liquid, freeze-dried powder, capsules or tablets and other dosage forms, and pharmaceutically acceptable auxiliary materials such as lactose and microcrystalline cellulose can be added. According to the cholesterol-lowering product, the total cholesterol, triglyceride and low-density lipoprotein cholesterol level of an object can be remarkably reduced under the action of peste des petits ruminants, and meanwhile, the high-density lipoprotein cholesterol level is increased; in addition, abnormal blood glucose induced by high-fat diet can be improved, arterial lipid accumulation is reduced, and the plaque area proportion of atherosclerotic lesions is improved.

The invention provides metal lithium surface protection slurry and a preparation method and application thereof, and the surface protection slurry comprises the following components by weight: 5-20 parts of a metal organic framework material (MOFs); 70 to 85 parts of a solvent; 3-6 parts of a conductive agent; 3-6 parts of a thickening agent; the MOFs material comprises an MOFs material taking a zinc-based metal matrix, a cobalt-based metal matrix, a vanadium-based metal matrix, an iron-based metal matrix, an aluminum-based metal matrix, a chromium-based metal matrix, a zirconium-based metal matrix or a lanthanide-series metal matrix as metal ions or metal cluster nodes, and the conductive agent comprises an organic polymer solid electrolyte material or an organic-inorganic composite solid electrolyte material. The surface protection slurry provided by the invention can form a protection layer with excellent lithium affinity, dendritic crystal resistance and stability on the surface of metal lithium.

The application provides a large-structure stope simple floor drawing method, calculates rock drilling and blasting parameters according to the American Livingston formula, constructs a downward large-diameter deep hole and a floor drawing roadway according to the obtained blasting parameters, extends and expands the upper mining blast hole depth to the trench bottom structure platform, adopts a variable multi-type section size spherical charge intensive blasting technology, a precise roof blasting technology, a deep hole small lateral positioning blasting and ore breaking technology and other means for the extended blast hole, forms a stable, standard and available new trench type bottom structure under the guarantee of the precise blasting technology, realizes safe and efficient floor drawing and slotting, has simple process and small construction difficulty, effectively avoids the safety risk caused by long-time cyclic operation of personnel under the roof, significantly improves the floor drawing efficiency and safety, and reduces the production cost, and the method has good popularization and application prospect for thick and large ore body large structure parameters in forming a trench type bottom structure.

The invention provides a coating with optical permeability and a preparation method thereof. The coating with optical permeability is prepared from the following raw materials in parts by mass: 25 parts of water-based acrylate copolymer emulsion, 25 to 35 parts of water, 0.8 to 1.5 parts of transparent functional particles, 16 to 20 parts of functional modified inorganic filler, 5.5 to 7.5 parts of boric acid ester-silanol-hydroxyl three-function cross-linked gel precursor solution, 0.2 to 0.5 part of thickening agent, 0.2 to 0.4 part of defoaming agent, 0.5 to 1 part of dispersing agent and 0.1 to 0.3 part of preservative. 0.2 to 0.5 part of an organic amine alcohol compound; the transparent functional particles comprise at least one of glass sand and cross-linked polymethyl methacrylate microspheres; the functional modified inorganic filler comprises at least one of amino silane modified snowflake white quartz sand and amino silane modified calcined sand white marble. The coating with optical permeability is suitable for the field of indoor and outdoor decoration.

The invention discloses a PCCP pipe bell and spigot joint sealing system manufacturing method and a PCCP pipe bell and spigot joint sealing system manufactured through the PCCP pipe bell and spigot joint sealing system. During manufacturing, a joint is filled with an elastic blocking piece, the elastic blocking piece is divided into a first sub-joint and a second sub-joint, and the elastic blocking piece is arranged in the joint in an abutting mode through a locking mechanism; mortar is poured into the first sub-joint through a reserved first grouting opening, and the locking mechanism is removed after the mortar does not flow; a base layer is arranged on the upper end face of an upper opening of the second sub-joint, anticorrosive paint is applied to the base layer to form an anticorrosive coating, the anticorrosive coating and the base layer form a plugging structure and seal the second sub-joint, and sealant is poured into the second sub-joint through a reserved second grouting opening; the elastic barrier piece is basically non-sticky to mortar and the like; the method is suitable for construction in the low-temperature environment, the obtained sealing system can adapt to different stress interferences and different environmental factors, lasting sealing can be achieved, the construction technology can be simplified after the anti-corrosion coating is formed in a front-arranged mode, and the construction speed is high.

The utility model provides a leveling device and a leveling system for mounting a collector ring, and belongs to the technical field of collector rings. The leveling device comprises a steel plate ruler which is arranged in a cylindrical hole of the rotary table and located in an annular groove of an annular plate in the cylindrical hole, and the two ends of the steel plate ruler are attached to the inner wall of the annular groove; the positioning shaft is arranged on the lower surface of the steel ruler, and the positioning shaft is used for being matched with a pipe opening in the top of a collector ring for limiting; the gradienter assembly is arranged on the upper surface of the steel ruler; and the dial indicator assembly is arranged at one end part of the steel ruler and is used for measuring the coaxiality of the collector ring and the cylindrical hole when the positioning shaft rotates. According to the utility model, the coaxiality and levelness measurement accuracy is improved, the installation quality of the collector ring is ensured, the cable laying in the turntable can be completed in advance, and the process waiting time is reduced.

The application belongs to the technical field of adhesives and sealants, and specifically provides a sealing wax as well as a preparation method and application thereof. The sealing wax comprises the following components in parts by mass: microcrystalline wax 40-60 parts, polyethylene wax 1-5 parts, ethylene-vinyl acetate copolymer 3-8 parts, low-molecular-weight polyisobutylene 2-5 parts, medium-molecular-weight polyisobutylene 2-5 parts, tackifying resin 15-20 parts, and flame retardant 3-5 parts. The number-average molecular weight of the low-molecular-weight polyisobutylene is less than 5000, and the viscosity-average molecular weight of the medium-molecular-weight polyisobutylene is 10000-40000. Through the design and mutual compounding of the components, the sealing wax has a high melting point, a low water absorption rate, a high volume resistivity, good high-temperature and low-temperature resistance, and strong waterproof and moisture-proof performance, high mechanical strength and toughness, high insulation, high transparency, and strong sealing effect, and has good flow leveling property and good flame retardant performance, and can meet the strict use requirements of high-end electronic equipment.

The application discloses a sweet potato soilless tuberization cultivation system and method. In view of the fact that existing sweet potato production cannot get rid of solid substrates such as soil, and is restricted by upgrading of cultivation technology and product value positioning, the sweet potato soilless tuberization cultivation technology of the application adjusts the number and single weight of tubers by controlling environmental air pressure conditions. The cultivation system comprises a culture box and a regulation system, the culture box is divided into a nutrient bin and a tuberization bin, the tuberization bin is provided with seedling holes and has an airtight structure, and the regulation system monitors and regulates the culture conditions in the culture box. The culture method is a stage regulation culture technology, and the continuous long-term tuberization production can be realized through the tuberization period regulation culture. The application solves the key technical problem that all existing soilless cultivation technologies of sweet potato need to use solid substrates to press vines to induce tuber enlargement to realize tuberization, is a completely soilless cultivation technology of sweet potato, introduces the sweet potato cultivation technology into a new stage, and provides a scientific basis and production control means for stable small-scale sweet potato production.

This utility model discloses a high-efficiency dry-hanging system for walls, including a fixed component and a sliding component that are slidably connected. The end of the fixed component away from the sliding component is fixed to the wall, and a metal plate or mesh is installed on the end of the sliding component away from the fixed component. Wall tiles are dry-hanging on the outside of the metal plate or mesh. The fixed component consists of an upper fixing plate and a lower sleeve. The top of the sleeve has a threaded hole, and the bottom of the sleeve has an adhesive application port. This utility model can achieve convenient and efficient installation of wall tiles using metal plates or mesh, and facilitates leveling, significantly improving the efficiency of leveling construction. It can also improve the connection strength of wall tiles and solve the problem of wall tiles being prone to cracking and surface material peeling under external forces.

This invention discloses a double-row pile retaining structure for foundation pits and its construction method, aiming to provide a double-row pile retaining structure for foundation pits with good deformation control, strong resistance to earth pressure, and high stability. A double-row pile retaining structure for foundation pits includes: a front row of piles, which are set in the soil; a front row of pile capping beam, with the top of the front row of piles connected to the front row of pile capping beam; a rear row of piles, which are set in the soil, with the front row of piles located between the rear row of piles and the foundation pit; a rear row of pile capping beam, with the top of the rear row of piles connected to the rear row of pile capping beam; a tie beam, connecting the front row of pile capping beam and the rear row of pile capping beam; and lapped steel sections, which are inserted into the soil, the lapped steel sections are inclined, the lower end of the lapped steel sections is connected to the rear row of piles, and the upper end of the lapped steel sections is connected to the tie beam or the front row of pile capping beam.

The invention relates to the technical field of coatings, in particular to dual-curing conformal coating as well as a preparation method and application thereof. The dual-curing three-proofing paint is composed of siloxane containing oxazolidinyl groups, a UV oligomer containing isocyanate groups, a diluting monomer, a water removal agent, a photoinitiator, a wetting agent, a catalyst and the like. Wherein the siloxane containing the oxazolidinyl group has two functional groups of long carbon chain oxazolidine and siloxane, the long carbon chain oxazolidine can realize rapid moisture curing of oligomer and does not generate volatile harmful substances, and meanwhile, hydrolysis residues of the long carbon chain oxazolidine can plasticize the conformal coating and reduce adhesion loss caused by shrinkage. On the other hand, siloxane groups can form a stronger physical or chemical action with a base material, so that the adhesive force to the base material is improved. In conclusion, the three-proofing paint has excellent low surface tension and high wettability, can effectively wet the polluted surface of the PCB and form interaction, has the characteristics of excellent adhesive force, salt mist resistance, high flexibility and the like, and has very high market application value.

The utility model discloses a constructional engineering cost on-site surveying and mapping device, which relates to the technical field of engineering cost surveying and mapping and comprises a total station, a mounting disc and a support rod, the top of the support rod is fixedly connected with a telescopic box, and the top of the telescopic box is hinged to the bottom of the mounting disc through a hinge block. By arranging the telescopic box and the hinge block, the distance between the telescopic box and the hinge block can be adjusted by rotating the coarse adjustment hand wheel, the low position of the mounting disc can be adjusted, coarse leveling of the total station can be achieved under the condition that the supporting rod is not moved, meanwhile, the stability of the tripod can be guaranteed, and by arranging the wedge-shaped rod, the height of the tripod can be adjusted. When the tripod is erected, the wedge-shaped rod can be pressed into the telescopic box by retracting the telescopic rod, limiting of the coarse adjustment gear to the coarse adjustment rack is relieved, the coarse adjustment rack can be retracted into the telescopic box when the tripod is in a storage state, and the purpose that the coarse adjustment rack can stretch out to be leveled conveniently when the tripod is erected next time is achieved.

The utility model discloses a cloth leveling device for acid and alkali protective clothing production relates to leveling device structure technical field, aims at solving the problem that cloth is easy to appear the condition of loosening when the existing cloth leveling device is leveling, and this will influence the leveling effect of cloth, and its technical scheme main points include mounting bracket, two between fixed bolster no.

The present application relates to the field of traditional Chinese medicinal materials, in particular to a composition for resisting PRRSv and improving the reproductive performance of sows and application thereof. The present application formulates a composition composed of 10 plant extracts (Angelica sinensis extract, Atractylodes macrocephala Koidz extract, Glycyrrhiza uralensis Fisch extract, Eucommia ulmoides Oliver extract, Eucommia ulmoides leaf extract, Populus davidiana Dode extract, Perilla frutescens leaf extract, Gynostemma pentaphyllum Makino extract, Leonurus japonicus extract and Astragalus membranaceus Bge extract) for sows in late pregnancy, and collects sow blood and placenta samples at the time of delivery, studies the influence of the composition on sow reproduction, and explores the mechanism of action. The experimental results show that the composition can improve the reproductive performance of sows by increasing the total number of piglets and other indicators; meanwhile, the composition can effectively inhibit the replication of PRRSv.

The invention discloses an informatization project file acceptance auxiliary inspection system and method. The auxiliary inspection system comprises a file acceptance index system management module, a project result management module, a file pre-acceptance module, a problem feedback and management module, an authority division and user management module and a statistical analysis module. The archive acceptance index system management module presets project archive acceptance requirements of a project belonging unit and sets an archive acceptance index system; the project achievement management module collects related achievements from the implementation process document of the specific project; the archive pre-acceptance module evaluates the collected archives in combination with specific project archive requirements; and the problem feedback and management module is used for deeply analyzing a quantitative evaluation result and generating a detailed pre-acceptance report and feedback opinions. And the archive acceptance efficiency is remarkably improved through an automatic and intelligent technology, and the objectivity and standardization of the acceptance process are ensured.

The disclosed urban rail transit thin-wall mixed U-shaped beam industrial construction method and construction system carries out the construction of U-shaped beam beam manufacturing pedestal and beam storage tensioning pedestal in the site; carries out the U-shaped beam steel bar binding and the installation of the prestressed steel bundle on the U-shaped beam mold frame, and hoists the U-shaped beam steel cage to the beam manufacturing pedestal through a hanger; after the U-shaped beam steel cage is positioned, the embedded part, the U-shaped beam inner mold and the support system are installed; the thin-wall mixed U-shaped beam structure is optimized; the first tensioning prestressed bundle is constructed; the beam body concrete is poured; the first tensioning prestressed bundle is released and cut; the two U-shaped beams are respectively hoisted to the beam storage tensioning pedestal by using a gantry crane; the second tensioning prestressed bundle is constructed; the hole is grouted and sealed; after the overall operation is completed, the quartz sand is discharged through the steel sand box sand discharge hole, so that the U-shaped beam is lowered to the concrete base of the beam storage tensioning pedestal. The present application comprehensively and systematically solves the problems of large waste of original technical resources and low production efficiency.

The utility model provides an environment monitoring device for tunnel safety, which comprises a shell, an air inlet flow channel, a semiconductor detection unit, a control panel and a power supply module, the outer wall of the air inlet flow channel is in a circular truncated cone shape and can gather and accelerate air flow, so that the semiconductor detection unit can obtain gas data more efficiently and accurately, and the detection efficiency and sensitivity are improved; in the filter piece connected with the air inlet flow channel, the filter screen can intercept impurities, pollution to the detection unit, influence on result accuracy and reduction of element loss are avoided, and the threaded connection of the connecting cylinder facilitates maintenance; the anti-vibration pad at the bottom of the shell supports the air inlet channel, external vibration influence is reduced, looseness of internal components is reduced, and stable work of the device is guaranteed; the warning lamp is electrically connected with the controller and the like, and warning signals can be sent out in time when abnormity is detected, so that rapid processing is facilitated, and the early warning capacity is improved. According to the device, efficient and accurate detection, stable operation and timely early warning are realized, and the tunnel safety monitoring level is improved.