4098 results about "Surface coating" patented technology

The invention relates to the technical field of surface quality detection, in particular to a PVC floor surface coating defect detection method and system, and the method comprises the steps: carrying out region division on a to-be-detected coating surface, obtaining a region scanning image, and carrying out image optical compensation on the region scanning image; analyzing high-dimensional image features of each area scanning image, performing difference analysis on the high-dimensional image features and reference features, and selecting a surface defect area; a high-dimensional defect feature analysis model is established, defect positioning information and defect geometric parameters are analyzed and generated, and the defect type of the surface defect area is judged according to the defect positioning information and the defect geometric parameters; and according to the defect positioning information and the defect geometric parameters, performing quantitative evaluation on the sensitivity weight of the surface performance of the to-be-detected coating in combination with defects, and outputting an overall surface performance influence analysis result. According to the invention, the problem that the capability of identifying small-size and complex-shape defects is insufficient is effectively solved.

An intravascular blood pump (100) comprises a tip (110), a first region (120) with at least one blood through-opening (121), a flow cannula (130), a second region (140) with at least one blood through-opening (141), a motor-operated pump mechanism (150) and a conducting cable (170). At least in the region of the flow cannula (130), at least one electrical conductor track is realized by a surface coating structure.

The invention discloses a dynamic path planning and self-adaptive control method and system for a coating robot, and relates to the technical field of coating automation. The method comprises the following steps: acquiring point cloud data through three-dimensional scanning equipment, constructing a dynamically updated workpiece curved surface model, and extracting curvature, edge and high-curvature mutation region features; a spraying path is generated based on a reinforcement learning algorithm, and path density, speed and coating supply are dynamically adjusted for a high-curvature area; distance, force feedback and environment parameters are fused, and mechanical arm and spray gun parameters are dynamically adjusted; dividing operation sub-areas and distributing tasks based on robot capability characteristics to realize multi-machine cooperation; and fault redundancy control and multispectral imaging are added to optimize the coating quality. The system comprises a sensing module, a decision-making module, an execution module, a redundancy control module and a communication module. According to the invention, the uniformity of the complex curved surface coating, the multi-machine cooperation efficiency and the system anti-interference capability are improved, and the method is suitable for spraying large workpieces such as aircraft fuselages and high-speed rail vehicle bodies.

The invention discloses a pre-lithiated silicon-carbon negative electrode material as well as a preparation method and application thereof. The pre-lithiated silicon-carbon negative electrode material comprises composite particles and a surface coating layer coating the outer surfaces of the composite particles, the mass of the composite particles accounts for 85%-99% of the total mass of the pre-lithiated silicon-carbon negative electrode material; the composite particles are compounds of pre-lithiated porous carbon and nano silicon particles; the composite particles are obtained by uniformly depositing nano silicon particles in pores of pre-lithiated porous carbon; the mass of the pre-lithiated porous carbon accounts for 15-95% of the total mass of the composite particles; the pre-lithiated porous carbon comprises lithium metal particles and porous carbon, and the lithium metal particles are attached to the surfaces of pores of the porous carbon; the mass of the lithium metal particles accounts for 0.1-10% of the total mass of the pre-lithiated silicon-carbon negative electrode material; when the pre-lithiated silicon-carbon negative electrode material is applied to the lithium battery, the first-circle coulombic efficiency of the lithium battery can be improved.

The invention discloses a circuit board surface coating quality detection method and device, and the method comprises the steps: obtaining an image of a coating surface, and removing noise interference; brightness gradient information is extracted, and when the brightness gradient information exceeds a preset brightness threshold value, it is judged that defects exist, and a potential defect area is obtained; a potential defect area is separated from the background, image brightness distribution is mapped into plating depth data, and surface topography parameters are calculated; the defect areas are classified, edge optical characteristics are extracted from coating edge areas in the image, the coating thickness difference is calculated, the thickness difference and the edge optical characteristics are fused to obtain fusion characteristics, and an image is generated through an algorithm; and calculating the brightness dispersion degree of the plating layer edge and the local thickness difference of each edge region, carrying out weighted average on the corresponding pixel gray value to obtain a fused comprehensive defect region image, and calculating to obtain the comprehensive quality score of the plating layer. The method can accurately detect the quality of the circuit board.

The invention relates to the technical field of battery materials, in particular to a diaphragm binder composition, diaphragm binder powder, a diaphragm and a battery. The separator binder composition comprises polymer particles A and polymer particles B, the glass transition temperature Tg of the polymer particles A is-10 DEG C or below, the glass transition temperature Tg of the polymer particles B is 60 DEG C or above, the average particle size D50 of the polymer particles A is 500 nm or above, and the average particle size D50 of the polymer particles B is 300 nm or below. The diaphragm binder composition provided by the invention not only can effectively bond a pole piece and a diaphragm, but also is helpful for maintaining the uniformity and stability of a coating on the surface of the diaphragm, ensures that the diaphragm has high air permeability and good wettability to an electrolyte, and is helpful for prolonging the cycle life of a battery.

The invention provides a lithium cobalt oxide positive electrode material and a preparation method and application thereof, and the preparation method comprises the following steps: mixing a first lithium cobalt oxide burning product with a coating agent to obtain a first mixture; mixing the second lithium cobalt oxide primary burning product with a coating agent to obtain a second mixture; the particle size D50 of the second lithium cobalt oxide fired product is smaller than the particle size D50 of the first lithium cobalt oxide fired product; and mixing and sintering the first mixture and the second mixture to obtain the lithium cobalt oxide positive electrode material, according to the preparation method, distribution of coating substances in the lithium cobalt oxide material is balanced by adjusting a large and small particle grading mixing process, so that the content of coating agents on the surfaces of different particles is controllable, the problems that the stability of the material is poor and coating layers on the surfaces of the large and small particles are uncontrollable during blending are solved, and the capacity and the cycle performance of the material are improved.

The invention discloses metal workpiece surface coating detection equipment, relates to the technical field of metal workpiece detection, and solves the problems that an existing detection device is poor in specific use function and high in detection efficiency due to the fact that a proper test method is difficult to select for different products to effectively evaluate the corrosion resistance of a metal coating and a chemical treatment layer. In addition, waste of an acid-base solution is undoubtedly caused by a soaking test mode, and high-efficiency utilization is difficult to realize. The detection equipment comprises an equipment platform and further comprises a rotating table, a first driving assembly, a clamping assembly, a supporting frame and a dripping and spraying integrated mechanism. In the invention, according to different coatings on different metal workpieces, different replacement and use of four solutions can be realized, so that the whole equipment can adaptively change the test solution according to different conditions of the coatings on the metal workpieces, and the test range of the equipment is widened; and therefore, the subsequent effective evaluation on the corrosion resistance of the metal coating and the chemical treatment layer is ensured.

The invention belongs to the technical field of hydraulic engineering detection, and particularly provides a hydraulic metal structure surface coating defect detection method and a hydraulic metal structure surface coating defect detection device based on image processing. In a wet and dry alternating environment of a hydraulic metal structure, a multispectral imaging device is used for acquiring an image of a metal structure surface coating, and the acquired multispectral image is preprocessed; a complete and clear image to be detected is obtained; extracting features related to coating defects from the preprocessed to-be-detected image, wherein the features comprise spectral features, texture features and color features; and inputting the extracted features related to the coating defects into a pre-trained classification model, and classifying the coating defects through the classification model. According to the method and the device, the state of the coating can be comprehensively described, and the type and the degree of the coating defect can be accurately identified.

A composite material having a skin optionally including a top surface coating; and one or more layers. The skin is adapted to be used on or to produce sporting equipment, such as on a sport or game paddle. The present teachings also include a paddle having a core, a first skin, and a second skin, where the first skin and the second skin sandwich the core. The skins may be a multi-layer fibrous composite.

The invention discloses a hard carbon material, a preparation method and application thereof and a sodium ion battery. The preparation method of the hard carbon material comprises the following steps: S1, mixing a biomass carbon source and mixed molten salt to obtain a mixture, and carrying out heat treatment on the mixture to obtain porous carbon; the mixed molten salt at least comprises two kinds of molten salt; s2, carrying out surface coating treatment on the porous carbon by adopting a coating agent to obtain a hard carbon precursor; and S3, carrying out carbonization treatment on the hard carbon precursor to obtain the hard carbon material. The obtained hard carbon material has proper pore size distribution, closed pore volume and specific surface area, has excellent electrochemical performance when being applied to the sodium ion battery, and can simultaneously take both high sodium storage capacity and excellent first effect into account. Moreover, the preparation method is low in cost, green and environment-friendly, and large-scale production is easy to realize.

The invention discloses a preparation method of low-loss high-saturation iron-nickel soft magnetic powder. Comprising the following steps of S1, alloy smelting and S2, atomization. S3, carrying out ball milling treatment; s4, annealing treatment; s5, carrying out surface coating; the low-loss high-saturation iron-nickel soft magnetic powder is prepared from the following raw materials in percentage by weight: 77.6%-78.2% of electrolytic nickel, 21.4%-22.3% of electrolytic iron and 0.1%-1% of an additive, the performance of the iron-nickel soft magnetic powder and a magnetic powder core prepared by the process is improved in multiple aspects, and the iron-nickel soft magnetic powder has great application advantages.

Embodiments herein generally relate to protein-based surface coatings. In some examples, disclosed embodiments relate to a process for synthesizing a protein-based surface coating, comprising conjugating acrylate or (meth-)acrylate monomer to serum albumin molecules. In at least one example, the conjugation step comprises: reducing native serum albumin molecules to produce free thiol groups; reacting the reduced serum albumin with (meth-)acrylate or acrylate monomers to react carbon-carbon double bonds with the free thiol groups; and inducing (meth-)acrylate or acrylate polymerization.

The invention relates to the technical field of metal surface coating detection, and discloses an intelligent detection method for metal surface coating defects. The method comprises the following steps: firstly, acquiring multispectral imaging data to carry out three-dimensional topology reconstruction to generate an initial three-dimensional feature model; dividing a detection area, and marking a defect core area, a transition area and a normal area; a high-resolution industrial camera is used for collecting dynamic morphology updating model parameters, identifying a surface abnormal area and calculating a theoretical contact distance with a probe, and then a scanning track is planned. In the detection process, the distance is monitored in real time, detection points are dynamically adjusted, scanning parameters are corrected according to contact stress, detection sub-domain scanning is divided, secondary imaging analysis is conducted on a scanning area, and scanning is supplemented if missing. According to the invention, the detection precision, intelligence and adaptive ability are improved, comprehensive and fine detection is realized, and the method has important application value in the field of metal surface coating detection.

The invention provides a 2.5 D phase deflection technology-based complex vehicle body surface coating defect detection method. The method comprises the following steps of: 1, projecting four cosine phase diagrams along an X direction and four cosine phase diagrams along a Y direction to the surface of a vehicle body coating through a programmable light source, and capturing eight cosine phase diagrams reflected by the surface of the vehicle body coating by using a high-precision industrial camera; 2, carrying out fusion processing on eight cosine phase diagrams captured by a camera by adopting a phase deflection technology; and step 3, gradient information of the wrapped phase diagram is extracted and fused, and a shape diagram is generated. The image generated by the technology can detect automobile body coating defects which are difficult to identify by a traditional method, can more clearly reflect fine defects such as sagging, scratches, pits and protrusions on the surface of the automobile coating, and also shows excellent detection capability on the complicated surface of the automobile body coating. According to the technology, the defect detection capability is remarkably improved, the subsequent defect extraction process is simplified, and the detection efficiency and accuracy are greatly improved.

The invention provides a large-area coated lithium manganate positive electrode material and a preparation method thereof, and belongs to the technical field of energy materials, and the large-area coated lithium manganate positive electrode material comprises a lithium manganate positive electrode material body subjected to grain boundary pretreatment and a coating layer coating the surface of the lithium manganate positive electrode material body. The general molecular formula of the lithium manganate positive electrode material body subjected to grain boundary pretreatment is Li < 1 + a > Mn < 2-b > MbO4, M is a doping element, a is more than or equal to-0.1 and less than or equal to 0.3, and b is more than or equal to 0 and less than or equal to 0.3; the surface coating layer comprises an M'coating element. The lithium manganate positive electrode material body subjected to grain boundary pretreatment can realize large-area coating, and the lithium manganate positive electrode material subjected to special grain boundary pretreatment and large-area coating has excellent structural stability, so that corrosion of an electrolyte to lithium manganate is relieved, Mn dissolution at a high temperature is inhibited, and the lithium manganate positive electrode material has good electrochemical performance. Therefore, the lithium manganate positive electrode material has excellent high-temperature circulation and high-temperature storage performance, and the method is simple in process and can be implemented and popularized.

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

A method includes forming a dielectric layer over a source / drain region. An opening is formed in the dielectric layer. The opening exposes a portion of the source / drain region. A conductive liner is formed on sidewalls and a bottom of the opening. A surface modification process is performed on an exposed surface of the conductive liner. The surface modification process forms a surface coating layer over the conductive liner. The surface coating layer is removed to expose the conductive liner. The conductive liner is removed from the sidewalls of the opening. The opening is filled with a conductive material in a bottom-up manner. The conductive material is in physical contact with a remaining portion of the conductive liner and the dielectric layer.

The invention relates to a material that is at least partially transparent and that has structures introduced into its internal volume after material production, which modify the volume with respect to its optical properties compared to the unstructured volume. The material according to the invention is characterized by its formation as an at least partially transparent surface coating, wherein the structure comprises modification bubbles that are formed in at least one plane within the volume.

The invention discloses a lithium supplementing material and a preparation method thereof, and belongs to the technical field of lithium ion battery lithium supplementing materials. The lithium supplementing material has a spherical core-shell structure; the spherical core-shell structure sequentially comprises a lithium iron phosphate layer and a lithium-rich lithium ferrite layer from outside to inside. The lithium supplementing material is prepared by two steps: firstly, carrying out surface coating in a similar sol-gel mode to obtain a material precursor, and then carrying out heat treatment on the precursor to obtain the lithium iron phosphate coated lithium-rich lithium ferrite material; in the preparation process, tannic acid is introduced for modified coating, so that the lithium iron phosphate coated lithium-rich lithium ferrite material which is uniformly coated and has high lithium supplement efficiency, high stability and relatively high reversible capacity is obtained, and the prepared lithium supplement agent material shows excellent lithium supplement performance and charge-discharge performance in a lithium ion battery performance test. Meanwhile, the preparation method is simple to operate and beneficial to actual production.

The invention provides a zinc-plated aluminum-magnesium steel strip surface coating image enhancement method, and relates to the technical field of image enhancement. A multi-scale feature extraction module provided by the invention adopts a method of combining an improved adaptive threshold local binary pattern and a directional gradient feature to extract edge textures and structural features under different scales; the feature selectivity enhancement module adopts an improved multi-scale direction response suppression and sparse activation enhancement method to perform direction saliency selection and detail region response improvement on the multi-scale feature map; and the cross-scale feature fusion module constructs a structural response graph based on local contrast variance, realizes pixel-level weighted fusion of a multi-scale feature graph, and finally outputs an enhanced zinc-aluminum-magnesium-plated steel strip surface coating image.

The invention relates to the technical field of surface coating materials, in particular to a multifunctional surface coating which comprises the following raw materials: organic silicon modified acrylic resin, an intumescent flame retardant, hollow glass beads, nano titanium dioxide, an auxiliary agent, graphene, silver nanoparticles and flaky zinc powder. The intumescent flame retardant is formed by compounding melamine polyphosphate and pentaerythritol, and the auxiliary agent comprises a dispersing agent, a flatting agent and a plasticizer. By integrating multiple functions of fire prevention, water prevention, heat insulation, self-cleaning and the like into a whole, the complex requirements of different fields of buildings, industry, traffic and the like on material performance can be comprehensively met. In the application of building exterior walls, the fireproof safety, the waterproof sealing performance and the heat insulation performance of buildings can be effectively improved, and energy consumption is reduced; in the aspect of industrial equipment protection, equipment can be protected from being damaged by environmental factors such as high temperature, moisture and corrosion, and the service life of the equipment is prolonged.

The invention relates to the technical field of decorative materials, in particular to a decorative material with a 3D texture structure and a preparation method and application of the decorative material. The method comprises the following steps: carrying out digital printing on a pretreated substrate to obtain a 2D pattern layer on the surface of the substrate; coating the surface of the 2D pattern layer with a photocuring coating, carrying out preliminary curing, and then carrying out ink-jet printing of a texture developing solution on the surface subjected to preliminary curing to carry out secondary curing, so as to obtain a cured coating; the cured coating comprises a hardened part and an unhardened part; and after an unhardened part in the cured coating is removed through polishing and wire drawing, a surface coating is coated, and the decorative material with the 3D texture structure is obtained. The textures with different widths and depths can be obtained in a manner of combining primary curing of the coating with ultraviolet absorption of the developing solution, and then a microcosmic coarse and visual smooth form is obtained through polishing and wire drawing treatment, so that the obtained 3D texture structure is closer to natural textures.

The invention belongs to the technical field of lithium ion battery positive electrode materials, and particularly relates to a double-strategy modified high-nickel positive electrode material as well as a preparation method and application thereof. According to the double-strategy modified high-nickel positive electrode material, a high-nickel positive electrode material serves as a matrix, surface coating and bulk phase doping are achieved at the same time through competitive doping of main group elements, a coating layer is a fast ion conductor LiLaO2 nano layer, and a bulk phase doping element is Y. The fast ion conductor coating layer can provide an additional ion channel, promote conduction of ions on the surface of the positive electrode material, reduce interface impedance and improve the rate capability of the battery. The doping elements can optimize the crystal structure of the positive electrode material and can relieve stress generated in the charging and discharging process, so that phase change and structural degradation are reduced, and the structural stability of the positive electrode material is improved.

The invention belongs to the technical field of biomedical engineering, and particularly relates to a preparation method and application of a titanium dental implant surface coating, and the preparation method comprises the following steps: S1, pretreatment of a titanium dental implant matrix: sequentially carrying out grinding and polishing, ultrasonic cleaning and acid etching treatment; s2, preparation of a coating precursor solution: adding nano-hydroxyapatite powder, chitosan, gelatin and titanium dioxide nanoparticles into deionized water, stirring to form a suspension, then adding a silver nitrate solution, and continuously stirring to form the coating precursor solution; s3, coating a coating: coating the surface of the pretreated titanium dental implant matrix with the coating precursor solution by adopting an electrophoretic deposition method; and S4, drying and sintering: drying and sintering the coated titanium dental implant. According to the preparation method of the titanium dental implant surface coating, provided by the invention, the bonding strength between the coating and the titanium dental implant matrix can be improved.

The invention belongs to the technical field of cement concrete surface coatings, and discloses a cement concrete surface coating structure with acid-resistant and corrosion-resistant functions, which has the advantages that the acid resistance is improved: a composite coating structure is adopted, and the advantages of modified epoxy resin, nano filler and polyurea are combined, so that the acid resistance and durability of the coating are remarkably improved. The modified epoxy resin primer has good permeability, so that the adhesive force between the coating and a concrete base layer can be effectively enhanced, and the falling risk is reduced. And compared with a traditional epoxy resin coating, the preparation method of the composite coating simplifies the curing process and reduces the construction difficulty. And the cost is reduced: the nanofiller is adopted to replace part of the polyurea material, so that the cost of the coating is reduced, and the performance is improved. The coating is endowed with excellent hydrophobicity and self-cleaning capability through surface hydrophobic treatment, dirt adhesion is reduced, and the service life is prolonged.

The invention provides a preparation method of an electron-ion mixed conductor sulfide electrolyte material, which is characterized by comprising the following steps: taking a sulfide solid electrolyte as an inner core, taking a two-dimensional transition metal layered material MXene as a surface coating layer, and coating the surface of the inner core with the two-dimensional transition metal layered material MXene, and carrying out ball milling and calcining to obtain the electron-ion mixed conductor sulfide electrolyte material. The two-dimensional transition metal layered material MXene is used as a surface coating layer, the air stability of the sulfide solid electrolyte is improved, calcination treatment is carried out, S in the sulfide solid electrolyte is combined with metal ions in MXene, the sulfide solid electrolyte has high electronic conductivity, the appearance of a space charge layer can be inhibited, and the performance of the sulfide solid electrolyte is improved. The electronic conductivity of the positive electrode is improved, the multiplying power of a battery cell is improved, the content of conductive carbon is reduced, and the intrinsic ion conductivity of sulfide electrolyte can be kept to the maximum extent.

The invention relates to a composite coating based on modified polyaspartic acid ester, a terrace system and a construction method of the terrace system, and belongs to the technical field of terrace coatings. The composite coating provided by the invention comprises a bottom layer coating, a middle layer coating and a surface layer coating, the prime paint comprises the following components: specific organic silicon modified polyaspartic acid ester prime coat resin; the component of the middle-layer coating comprises specific polyaspartic acid ester floating coat resin; and the component of the surface layer coating comprises specific imide modified polyaspartic acid ester surface coating resin. The invention also provides a terrace system formed after construction of the composite coating, the terrace system has the advantages of crack resistance, compression resistance, moisture resistance, skid resistance, high adhesion, high strength, high wear resistance, yellowing resistance, long service life and the like, does not contain a solvent, avoids environmental pollution caused by volatilization, can keep excellent performance for a long time when being used for outdoor pavements, and has a wide application prospect. The problems of poor applicability, bubbling cracking, yellowing and the like of the existing floor coating in an outdoor severe environment are solved, the application range is wide, and the application value is high.

The invention discloses a high-stability layered oxide sodium-ion battery positive electrode material and a preparation method thereof.The high-stability layered oxide sodium-ion battery positive electrode material comprises a layered oxide matrix and a surface coating layer, a sodium source, a nickel source, a manganese source, a lithium source and a magnesium source are mixed according to the stoichiometric ratio, a pre-sintered product is heated to 850-950 DEG C at the speed of 0.5-2 DEG C / min to be calcined, and the high-stability layered oxide sodium-ion battery positive electrode material is obtained. The calcined product, lithium phosphate and aluminum nitrate are subjected to ball milling and mixing in a citric acid solution with the pH value of 3-5 according to the mass ratio of 1: (0.005-0.03): (0.002-0.02), and the capacity retention ratio of the battery is larger than or equal to 88% after 500 times of circulation under the voltage range of 2.0-4.0 V and the multiplying power of 0.5 C. The comprehensive protection from the bulk phase to the interface is realized by triple doping and gradient coating, and the cycle life is prolonged by two times. Interlayer spacing expansion and coating layer ion conduction cooperate to reduce polarization, and the applicable temperature range is widened to-30 DEG C to 60 DEG C. Seed crystal induction and segmented sintering ensure batch consistency, and the method is suitable for large-scale production. Cheap Fe / Mn is adopted to replace part of Ni, and the material cost is reduced by 40% compared with similar products.

An electrode sheet inspection control system (100). The electrode sheet inspection control system (100) is applied to an electrode sheet coating system. The electrode sheet coating system comprises an unwinding device (101), a first surface coating device (102), a first surface drying device (103) and a winding device (104) arranged in sequence. The electrode sheet inspection control system (100) comprises a first measurement device (105); the first measurement device (105) is arranged between the unwinding device (101) and the first surface coating device (102), and the first measurement device (105) is used for measuring the size of an area to be coated on a first surface of an electrode sheet substrate output by the unwinding device (101), the first surface being perpendicular to the thickness direction of the electrode sheet substrate.