26 results about "Drop coating" patented technology

The invention discloses a hydrophobic antibacterial polymer, a preparation method and application in a hydrophobic antibacterial coating, and belongs to the technical field of high polymer materials, and the preparation method comprises the following steps: mixing a component A with a first organic solvent to obtain a solution 1, and mixing a component B with a second organic solvent to obtain a solution 2; blending the solution 1 and the solution 2, adding a component C and an initiator, and reacting to obtain a hydrophobic antibacterial polymer; dissolving the hydrophobic antibacterial polymer in a third organic solvent to obtain a solute solution; and coating the surfaces of fabrics, silicon wafers, steel and wood with the dissolved matter solution through spraying, dispensing and dipping, and curing to obtain the self-healing high-durability hydrophobic antibacterial coating capable of being freely coated. The preparation method disclosed by the invention is simple in process and low in cost, the obtained coating has excellent hydrophobicity, antibacterial property and environmental stability and also has self-repairing property and free coating property, and the service life and the use convenience of the coating are remarkably improved.

The invention discloses a preparation method and application of an electrochemical sensor for detecting mancozeb. Electrode modification is carried out by using SQDs to prepare a portable electrochemical sensor with SPCE or GCE as a substrate electrode, and the electrochemical sensor is applied to detection and analysis of MCZ in a water environment. An SQDs nano material is obtained through a top-down method, modification is carried out on the surface of SPCE or GCE through a dispensing method, modified SPCE or modified GCE of the SQDs nano material is constructed, then a portable electrochemical workstation controlled by a smart phone is combined, an electrochemical sensor technology platform with immediate response is constructed, and in-situ and on-site efficient detection of MCZ is achieved. The SQDs-based electrochemical sensor disclosed by the invention has the advantages of strong specificity, simplicity in preparation, high sensitivity and the like, and has a wide application prospect in MCZ detection.

The utility model relates to the technical field of glass film coating, in particular to a film coating device for manufacturing optical glass, which comprises a supporting seat and a film coating mechanism, the film coating mechanism is positioned above the supporting seat and comprises a positioning structure and a film coating structure, a blowing structure is arranged in a blowing cavity, and a cleaning structure is arranged in a dust collection cavity. The coating device has the beneficial effects that the coating mechanism is used for dripping coating on the surface of optical glass, the positioning structure drives the optical glass to rotate so that the coating can be coated on the surface of the glass, then the drop-shaped coating is blown away through the blowing-away structure, then the blown-away coating is blown to the center of the rotating disc, and the situation that the coating is thrown out due to the action of centrifugal force is reduced; therefore, the retention time of the coating on the surface of the optical glass is prolonged, the coating path of the coating is increased, reciprocating coating of the coating on the surface of the optical glass is achieved, and the uniformity of coating is improved.

The invention belongs to the technical field of luminescent materials, and particularly relates to a cuprous iodide complex single crystal as well as a preparation method and application thereof. The invention discloses a cuprous iodide complex single crystal based on pyrimidine derivative ligand 4-Mepym, the chemical formula of the cuprous iodide complex is CuI (4-Mepym), the 4-Mepym is an organic ligand component, and the CuI is an inorganic component; the organic ligand is obtained by bridging two Cu (I) through double nitrogen atoms; the cuprous iodide complex single crystal is an orthorhombic system, and the cuprous iodide complex single crystal can be obtained from cuprous iodide and 4-methylpyrimidine through a method of combining solution diffusion with solvent volatilization. The cuprous iodide complex single crystal disclosed by the invention is used as a scintillator, a scintillator film is obtained through blade coating, dispensing and other technologies, and the scintillator film can perform clear imaging on the internal structure of a real object under X-ray irradiation and can also be used for three-dimensional dynamic imaging.

The application discloses an adjustable air outlet nozzle, a drying assembly and a drop coating drying device, and relates to the technical field of battery processing. The adjustable air outlet nozzle comprises a fixed carrier, an air outlet piece and an adjusting assembly. The air outlet piece is provided with an air inlet and an air outlet. The air outlet piece is rotationally installed on the fixed carrier. The adjusting assembly is connected with the air outlet piece and is used for adjusting the rotation angle of the air outlet piece relative to the fixed carrier, so as to adjust the air outlet angle of the air outlet. The designed adjustable air outlet nozzle can realize local drying of the material belt, avoid causing dry cracking of the coating on the unsprayed part, and thus improve the production efficiency and product quality.

The application designs a kind of electrochemical sensor preparation based on bismuth film (Bi) and two-dimensional graphdiyne (GDY) and its application in one-step detection of multiple heavy metal ions. A kind of electrochemical sensor (Bi / GDY / GCE) capable of one-step sensitive detection of Zn 2+ , Cd 2+ , Pb 2+ is prepared by drop coating method and electrodeposition method. Mainly includes the following steps: (1) preparation of sensor: the glassy carbon electrode (GCE) is polished on the chamois leather with Al2O3 polishing powder, and then the electrode is washed with ultrapure water. GDY solution is drop coated on the surface of GCE, and then bismuth film is electrodeposited after air drying at room temperature. (2) application of sensor: the constructed electrochemical sensor is used for one-step detection of three heavy metal ions Zn 2+ , Cd 2+ , Pb 2+ by adsorption dissolution voltammetry. The application has simple process, low manufacturing cost, high detection efficiency and remarkable determination effect.

The invention discloses temperature-sensitive fluorescent coating ink based on triplet state-triplet state annihilation up-conversion as well as a preparation method and application of the temperature-sensitive fluorescent coating ink. The ink is composed of a polymer substrate material, silicone rubber polymer nanoparticles loaded with triplet state-triplet state annihilation up-conversion fluorescent dye and a solvent, a temperature-sensitive fluorescent coating is formed on the surface of an electronic component through a dispensing method, a spin coating method, a blade coating method or a spraying method, and a uniform fluorescent film is prepared; exciting the fluorescent film by using laser; a photoluminescence signal is collected through a confocal light path, and spectrum analysis is carried out through a monochromator; the method comprises the following steps: performing micro-area scanning on a fluorescent film on the surface of a measured object by controlling a displacement table or a galvanometer, and capturing spectral information of each pixel point; and according to a pre-calibrated temperature-spectrum relation curve, reconstructing a micro-scale two-dimensional or three-dimensional temperature distribution diagram of the chip in a working state. According to the invention, non-contact and high-resolution real-time temperature imaging of a chip working state microcell is realized, and a key technology is provided for temperature anomaly detection, thermal management optimization and failure analysis of a miniature electronic component.

The utility model discloses a kind of solid wood composite floor antistatic coating spraying devices, by conveying device, dust removal device, coating supply device, static elimination spraying device and recycling device constitute. Dust removal device includes upper dust removal component and lower dust removal component, accurate adjustment is passed through lifting cylinder, utilize dust removal pipe to connect external device, can remove dust on the upper and lower surface of floor in all directions, enhance coating adhesion. In static elimination spraying device, static elimination stick first eliminates static, drive spray head mounting plate lifting by transmission screw rod, ensure uniform spraying of coating. Coating supply device can stir uniform coating and stable feed, recycling device can collect dropped coating recycling. Conveying device selects roller conveyor, guarantee floor stable transmission. Each component cooperates operation, effectively improve the floor spraying quality and efficiency, with environmental protection, meet the demand of special environment to antistatic floor.

To provide a construction method for more easily preventing the falling of a high-strength bolt due to delayed fracture than before.SOLUTION: The present invention relates to a method for preventing a drop of a high-strength bolt using a coating material for preventing the drop of the high-strength bolt attached to a predetermined attachment target, the method including a main material treatment of applying an anti-drop coating material having a tensile strength of 10 to 70N / mm2, an elongation at break of 100 to 500%, and a waterproofness of 3800 to 4500 g / m2 to a surface of the attachment target.SELECTED DRAWING: Figure 1

The invention discloses a preparation method of a zirconium pentatelluride film, which specifically comprises the following steps: firstly, growing ZrTe5 crystals by a fluxing agent method, grinding the ZrTe5 crystals into powder, and adding a dispersing agent for intercalation treatment to weaken Van der Waals' force between layers of the ZrTe5 crystals; and then an ultrasonic dispersion technology is adopted to prepare a ZrTe5 dispersion liquid with good dispersibility. In order to improve the stability of the dispersion liquid, a stabilizer is further added, so that the dispersion degree and the stability of ZrTe5 particles in the solution are remarkably enhanced. And finally, realizing uniform deposition of the thin film through a spin coating or dispensing technology. The method is easy and convenient to operate, low in cost and suitable for preparation and application of topological functional materials.

The application discloses a preparation method of high-hardness, transparent and fluorine-free liquid-repellent coating and belongs to the technical field of high polymer functional materials and polymer coating. Hydroxyl silicone oil, epoxy resin, isocyanate derivative, melamine formaldehyde resin and polyether modified silicone oil are fully dissolved in an organic solvent, coated on a substrate and heated and solidified in one step to obtain the high-hardness, transparent and fluorine-free liquid-repellent coating. The coating prepared by the application is transparent, liquid-repellent and has excellent hardness and can be constructed on the substrate by means of drop coating, dip coating and spin coating. The raw materials are cheap and easy to obtain, the preparation process is fluorine-free and controllable, and the application has wide application value.

The present invention discloses a method for preparing a zirconium pentatelluride thin film, specifically comprising the following steps: first, growing ZrTe5 crystals using a flux method, grinding them into powder, and adding a dispersant for intercalation treatment to weaken the van der Waals forces between the ZrTe5 crystal layers; then, using ultrasonic dispersion technology, preparing a ZrTe5 dispersion with good dispersibility. To improve the stability of the dispersion, a stabilizer is further added to significantly enhance the dispersion and stability of the ZrTe5 particles in the solution. Finally, a uniform thin film is deposited by spin coating or drop coating. The method of the present invention is simple to operate, low-cost, and suitable for the preparation and application of topological functional materials.

The invention belongs to the technical field of preparation of electrochemical sensors, and discloses preparation of a polyamide thin-layer two-way chromatography two-channel electrochemical sensor, and the preparation method comprises the following steps: S1, preparing an electrochemical test strip through silk-screen printing for detecting oxidation peak current values of two substances ECH and VB; s2, according to the pattern of the electrochemical test strip, an unfolding cylinder is designed, and the unfolding cylinder is composed of a cover plate on the upper portion and an unfolding groove on the lower portion; and S3, improving the electrochemical test strip by using beta-CD-coated MWCNTs (multi-walled carbon nanotubes) by adopting a dispensing method. The electrochemical sensing test strip capable of rapidly detecting two active components (ECH and VB) of Ma is prepared through a silk-screen printing technology. Beta-CD (at) MWCNTs are modified on a working electrode, and specific adsorption to target molecules is enhanced through inclusion of beta-CD, so that the detection sensitivity is improved. Meanwhile, the polyamide thin layer is immobilized on the electrode, so that the sample pretreatment step is simplified, and the electrode can detect the Ma active component more accurately and quickly.

The invention provides a 3D-rGO / Au / beta-CD modified electrode as well as a preparation method and application of the 3D-rGO / Au / beta-CD modified electrode. The preparation of the modified electrode comprises the following steps: preparing 3D-rGO through an oil bath method, and further depositing 3D-rGO, Au and beta-CD on the surface of a glassy carbon electrode (GCE) through a dispensing method and an electrochemical deposition method, thereby preparing a novel electrochemical sensor and realizing electrochemical sensing of niclosamide (NA). The invention provides a simple and rapid niclosamide detection method based on excellent electrochemical performance of 3D-rGO / Au / beta-CD (three-dimensional rGO / Au / beta-CD). The invention solves the problems of poor material stability, weak selective recognition, high detection limit and narrow detection range in the existing niclosamide detection.

The invention provides a preparation method of a self-cleaning efficient double-layer passive radiation refrigeration coating, and belongs to the technical field of radiation refrigeration materials. The preparation method comprises the following steps: adding fluorosilane modified inorganic nanoparticles into a polymer solution, dropwise adding non-solvent water to prepare a uniformly mixed sol solution, and coating the sol solution on the surface of a base material by adopting a dropwise coating method, so as to prepare the self-cleaning efficient double-layer passive radiation refrigeration coating. The coating simultaneously meets the requirements of the radiation refrigeration coating on the selective regulation and control performance and the self-cleaning function of the spectrum, and the practicability is improved. The radiation refrigeration coating solves the problems of poor optical performance and dust coverage of an existing radiation refrigeration coating, can meet actual use requirements, and has wide application prospects in the fields of building roofs, outer wall cooling, automobile interior and exterior decoration material manufacturing and the like.

The release agent dispensing mechanism for punching comprises a support and a plastic dripping bottle, the plastic dripping bottle comprises a conical bottle body and a dripping head in threaded connection with the conical bottle body, a clamping seat which vertically ascends and descends is arranged on the support, the clamping seat is detachably connected with a threaded connector of the dripping head, a conical sleeve is fixed to the portion, above the clamping seat, of the support, and the conical sleeve is fixed to the portion, above the clamping seat, of the support. The conical sleeve is sleeved on the outer side of the conical bottle body, the clamping seat drives the plastic dropping bottle to move downwards, and the conical sleeve extrudes the conical bottle body. In the conveying process of the U-shaped iron, the release agent is automatically dispensed at the punching position of the U-shaped iron.

The invention discloses a preparation method of a KB / Mo2C / CNT thin film and application of the KB / Mo2C / CNT thin film in an intermediate layer of a lithium-sulfur battery, and belongs to the technical field of lithium-sulfur batteries. The preparation method comprises the following steps: plating a metal molybdenum oxide target material on a CNT substrate in the form of nanoparticles, then carrying out KB loading and PVP dispensing, and finally carrying out carbon thermal reduction on MoO3 into Mo2C nanoparticles through Joule heat so as to form the KB / Mo2C / CNT film. The film material can be rapidly heated by Joule heat generated when current passes through the nanotube film, the method is especially suitable for synthesis of some materials needing high-temperature treatment, and the method has the advantages of being simple in equipment, convenient to operate, high in adaptability, high in preparation speed and the like. Compared with a traditional film coating method, the film coating technology is simple, rapid and low in cost, the thickness and size of the film can be accurately controlled, different application scenes are met, use of harmful chemical substances is reduced, and environmental protection is facilitated.

The utility model discloses a surface anti-falling coating device for bolt processing, which relates to the field of coating devices and comprises a coating barrel, an annular coating brush is arranged on the inner wall of the coating barrel, a coating brush is arranged on the bottom wall of an inner cavity of the coating barrel, and a driving motor is arranged on the bottom wall of the coating barrel. According to the scheme, through cooperation of the coating barrel, the coating brush, a ring coating brush and other devices, the device can conveniently conduct coating operation on the thread position of the outer wall of a bolt, the thread position is conveniently, evenly and comprehensively coated with coating, and the coating efficiency is improved. The phenomenon of incomplete coating is avoided; and through cooperation of the fixing frame, the electric push rod, the lifting frame and other devices, the device can conveniently conduct lifting adjustment on the positions of the bolts, feeding and discharging of the bolts are facilitated, and the working efficiency of bolt coating is improved advantageously.

The invention discloses a Joule thermal characteristic-based humidity monitoring sensor and a preparation method thereof, and relates to the technical field of wireless humidity monitoring. The main body structure is a device structure combining the controllable heating layer of the laser-induced graphene and the graphene oxide humidity-sensitive layer of the porous structure, the processes such as a laser direct writing technology, a template method and dispensing are mainly adopted, a complex preparation process is not needed, the preparation cost is reduced, the structure is simple, and the cost is low; electrical signal transmission is not needed, wireless humidity monitoring is achieved based on the Joule heat principle and by means of a Joule heat effect humidity monitoring method through the influence of humidity on temperature, namely, temperature change is detected by means of a thermal infrared imager, and electrical signal transmission is not needed.

The invention discloses a method for improving the energy storage performance of a polypropylene film for a capacitor based on crystal form regulation and control, which comprises the following steps of: regulating and controlling the adding proportion of a nucleating agent in polypropylene, dispensing, drying, annealing, cooling step by step and the like to induce the generation of beta crystals and regulate and control the aggregation state structure of the polypropylene, so that a deep trap is introduced into the polypropylene film, and the energy storage performance of the polypropylene film for the capacitor is improved. Further, the energy storage characteristic of the polypropylene film is improved.

The present invention discloses a method for preparing an anti-adhesion super-lubricating coating for separation and recovery of high-viscosity oil-water systems, which is specifically as follows: a saturated carbon chain polymer, vinyl silicone oil, a cage-type mercapto compound, a siloxane compound and a photoinitiator are dissolved in an organic solvent, then mixed evenly, coated on a substrate, and cured using an ultraviolet lamp to obtain an anti-adhesion super-lubricating coating for separation and recovery of high-viscosity oil-water systems. The coating exhibits excellent anti-adhesion properties for various low-surface-tension organic solvents and even high-viscosity liquids such as crude oil and pump oil, can effectively prevent membrane contamination, and has excellent separation effects and long-term separation performance for various oil-water mixtures and high-viscosity oil-in-water emulsions, thereby realizing the recycling and reuse of high-viscosity oil products. The coating has excellent thermal stability, corrosion resistance and organic solvent resistance, has good bonding strength on various substrates, and can be modified on various substrates such as smooth glass surfaces, cotton fabrics and stainless steel mesh substrates. At the same time, the coating can be prepared using various methods such as drop coating, spin coating, spray coating, and dip coating, with simple processes, convenient operation and low cost.

A method for coating a surface of a sample with a liquid using a pipettor in a laboratory automation apparatus, the sample having an elongated shape defining a longitudinal sample axis. The laboratory automation apparatus includes a work surface, a pipettor and a robotic arm. The pipettor includes a pipetting tip defining a longitudinal tip axis. The method includes the following steps: i) providing the sample on the work surface, ii) providing a hanging drop on the distal opening of the pipetting tip, iii) using the robotic arm for moving the pipetting tip to the location of the sample on the work surface and aligning the center of the hanging drop with the distal end of the sample. The sample is coated by moving the pipettor with the longitudinal tip axis perpendicular to the longitudinal sample axis such that the distal end of the sample contacts the hanging drop.

This invention provides a highly transparent nanocomposite film for ultraviolet-blue light protection and its preparation method. The aforementioned highly transparent nanocomposite film achieves a transmittance of less than 5% in the 250–500 nm ultraviolet-blue light band by precisely controlling the core-shell structure and energy levels of ZnCdS@Cd-rich nanocrystals through differentiated ligand ratios, coupled with a low filler content design of 0 < x ≤ 5 wt%. This results in highly transparent nanocomposite films that effectively shield high-energy harmful light radiation while maintaining a transmittance of not less than 90% in the long-wavelength visible light band above 520 nm, balancing protective effect and visual clarity. This solves the shortcomings of traditional materials that either provide insufficient protection or suffer from visual distortion due to poor transmittance. Furthermore, the preparation method is simple and controllable, requires no complex equipment, and is compatible with various coating methods such as drop coating, spin coating, and blade coating, making it suitable for large-scale production.

The invention belongs to the technical field of conductive polymers, and discloses a polymer film with metallic charge transport and a preparation method thereof. The polymer film with the metallic charge transport function is obtained by preparing PBFDO into a film; the film forming mode is spin coating, blade coating or dispensing rapid drying; during dispensing, the temperature is greater than or equal to 155 DEG C. The invention also discloses a preparation method of the film. According to the invention, the n-type conductive polymer film for metallic charge transport is successfully obtained, and the film provided by the invention can show metallic charge transport in a temperature interval of 20K to 300K. The method is simple in process and low in cost.

The invention discloses a preparation method and application of a heavy metal ion electrochemical sensor, and the method comprises the following steps: firstly synthesizing a zinc-cobalt-nitrogen co-doped material by a hydrothermal method, then preparing ZnCo / N-PC from the material by a high-temperature carbonization method, and then compounding the ZnCo / N-PC and NACS by a physical mixing method to obtain the heavy metal ion electrochemical sensor. And modifying an electrochemical sensor electrode by a dispensing method to obtain the ZnCo / N-PC coated NACS / GCE ion electrochemical sensor. The electrochemical sensor constructed by the invention can realize rapid, sensitive, selective and synchronous determination of Pb < 2 + > and Cd < 2 + >, and can be successfully used for effective determination of Pb < 2 + > and Cd < 2 + > in actual samples such as water samples and grains.

The invention provides a preparation method of a BiVO4 / CuFe2O4 composite photo-anode for photoelectrocatalytic water decomposition. According to the invention, BiVO4 is used as a substrate, and the BiVO4 / CuFe2O4 composite photo-anode is prepared by using a dispensing and calcining method. The supported spinel type CuFe2O4 accelerates separation of current carriers, inhibits recombination of holes and improves water oxidation kinetics, so that the composite photoanode has excellent photoelectrochemical water decomposition capability and good stability, and under the illumination condition, the photoelectrocatalytic performance of the BiVO4 / CuFe2O4 composite photoanode is far higher than that of a BiVO4 photoelectrode. Meanwhile, the composite photo-anode is low in raw material and synthesis cost, and the synthesis method is simple and efficient.