391 results about "Porous coating" patented technology

The invention discloses a preparation method and application of a plasma etching resistant coating, and relates to the technical field of coatings. Comprising the steps that a yttrium oxide layer is prepared through a low-pressure plasma spraying method, the yttrium oxide layer comprises a relative porous layer (the porosity is 1%-3%) and a compact layer (the porosity is smaller than 1%) which are sequentially stacked, and the relative porous layer is used for making contact with a base body. By adopting low-pressure plasma spraying, the yttrium oxide layer with controllable coating morphology and thickness can be obtained, and the thermal expansion coefficient mismatch between the substrate and the compact layer can be effectively relieved through the relative porous layer close to the substrate; the compact layer on the surface is uniform in structure, low in porosity, excellent in cohesion strength and excellent in plasma etching resistance, plasma and a matrix can be isolated, and generation of particles in the etching process is avoided. The compact layer and the relatively porous coating are both prepared on the basis of the same powder material and by adopting the same coating deposition equipment, so that the production efficiency can be improved, and the production cost and the pollution risk caused by transfer between production steps can be reduced.

The invention belongs to the technical field of biological material surface modification, and discloses a medical titanium alloy surface bionic multifunctional composite coating and a preparation method thereof. According to the method, the medical titanium alloy is sequentially subjected to micro-arc oxidation and anodic oxidation, and then the bionic multifunctional composite coating on the surface of the medical titanium alloy is prepared. The purpose of micro-arc oxidation is to prepare a micron porous coating on the surface of the medical titanium alloy. According to anodic oxidation, a series of nano-coatings are synthesized on the surface of the micro-arc oxidation coating, the nano-coatings can be composed of discontinuous cauliflower-shaped nano-particles or can be of a continuous film-forming cauliflower-shaped structure, and the thickness of the nano-coatings can be from the nanometer level to the micrometer level. According to the coating, the biological function is further improved through the nano coating while the mechanical anchoring effect of the micron porous structure on new bone tissue is maintained. Even if the coating is damaged by external force, the high binding force of the coating does not cause the failure of the coating, and the coating also has good wear resistance and corrosion resistance.

The invention provides a secondary battery and a preparation method thereof. The secondary battery comprises a positive electrode, a negative electrode, an electrolyte and a diaphragm, the diaphragm is arranged between the positive electrode and the negative electrode, the diaphragm comprises a base membrane, a first porous coating is arranged on one side, close to the positive electrode, of the base membrane, and the first porous coating comprises a covalent organic framework porous material. A second porous coating is arranged on one surface, close to the negative electrode, of the base membrane and comprises a hydrogen bond organic framework porous material. The two sides of the base membrane are coated with the organic porous framework materials with different gas adsorption properties, and the porous materials have certain specificity and high efficiency on gas adsorption and can effectively adsorb gas, so that the problems that the battery performance is deteriorated and the safe use of the battery is influenced due to gas production in the battery are solved.

A separator includes a porous substrate and a porous coating disposed on at least one surface of the porous substrate, the porous coating includes a polymer, and the polymer includes polymer particles. In a 130 μm×100 μm region on a surface of the porous coating, the number of the polymer particles with a maximum diameter in a range of 5 μm to 14 μm is 100 to 180. The separator has large-particle size polymer that can increase the interface gap at the corners of the electrochemical device. Thus, for the electrochemical device, the electrolyte at the corner interfaces can achieve good infiltration during the charge-discharge cycling process, effectively alleviating the corner purple / black spot problem of the electrochemical device.

The present invention relates to a method of manufacturing a surface-modified material wherein the method comprises the steps of applying a coating composition onto at least one surface of a substrate to form a porous coating thereon wherein the coating composition comprises mineral particles selected from the group consisting of calcium carbonate, calcium phosphate, hydromagnesite and mixtures thereof and a binder, and impregnating the porous coating with at least 150% by weight of an impregnating liquid composition based on the total weight of the porous coating to form a constraining liquid layer within and on the porous coating wherein the impregnating liquid composition is chemically inert to the substrate and the porous coating. Furthermore, the invention relates to a corresponding surface-modified material, an article comprising the same and the use of such a material.

The present disclosure relates to a separator, an electrode assembly including the same, and an electrochemical device, and the separator according to one embodiment of the present disclosure comprises a porous substrate and a porous coating layer on each of both surfaces of the porous substrate, the porous coating layer comprising inorganic particles, in which a total thickness of the separator remains constant throughout the separator, wherein an aspect ratio of the separator is 1 or more, and wherein an interface between each of the porous coating layers and the porous substrate has a curved shape protruding toward the porous substrate based on a width direction of the separator.

Provided is a method for determining the adhesive penetration into at least one porous coating material which is pressed with at least one carrier plate and at least one adhesive layer arranged on the carrier plate. The adhesive penetrates or rises into the at least one porous coating material during the pressing process.

Provided is a method for determining the resin penetration into at least one porous coating material which is pressed with at least one carrier board and at least one resin layer arranged on the carrier board. During the pressing process the resin penetrates or rises into the at least one porous coating material.

The invention provides a hydrogen production electrode, a preparation method thereof and a hydrogen production device, and relates to the technical field of hydrogen production. The hydrogen production electrode comprises a metal matrix and a porous coating arranged on the surface of the metal matrix, the porous coating comprises a first metal material and a second metal material; the first metal material comprises one or more of nickel-based metal, cobalt-based metal and iron-based metal; the second metal material includes a lanthanide nickel-based alloy compound. Through the unique effect of the second metal material in the porous coating layer in the catalytic coating, the oxidation of the cathode in the hydrogen production electrode caused by reverse current is inhibited, and meanwhile, the catalytic activity and the coating stability are improved.

The invention provides an amino acid compound fertilizer for improving nitrogen and phosphorus utilization rate and a preparation method. The compound fertilizer is based on urea, ammonium sulfate, monoammonium phosphate and potassium chloride according to a specific proportion, glutamic acid / glycine compound amino acid and iron, zinc and boron trace elements are added, and the 18-12-18 proportioning fertilizer with a slow release function is formed through the synergistic effect of amino acid chelation pretreatment and a high tower granulation process. Amino acid competitive inhibition phosphorus immobilization and activation of crop nitrogen metabolic pathways are utilized, a porous coating structure is constructed by means of a modified starch binder, the technical effects that the nitrogen utilization rate is increased by 4% or above and the phosphorus utilization rate is increased by 6% or above are achieved, and the bottleneck of nutrient waste of traditional balanced fertilizers is broken through.

Battery cell, including: a case; and an electrode assembly located inside the housing, wherein the electrode assembly comprises a positive electrode plate, a negative electrode plate and a separator film, the separator film being arranged between the positive and the negative electrode plates, where The negative electrode plate comprises a negative electrode current collector and a negative electrode film layer located on at least one side of the negative electrode current collector. The negative electrode film layer comprises an active material of the negative electrode. The negative electrode film layer comprises a first negative electrode film layer located away from the negative electrode current collector and a second negative electrode film layer located near the negative electrode current collector. The first negative electrode film layer comprises a first active material of the negative electrode, and the second negative electrode film layer comprises a second active material of the negative electrode.The first active material of the negative electrode contains a silicon-based material and a carbon-based material, the second active material of the negative electrode contains a carbon-based material, and the mass fraction of the silicon element in the negative electrode film layer is 0.5% to 6%. The separator film comprises a base film, a first porous coating on the side of the base film facing the negative electrode plate, and a second porous coating on the side of the base film facing the positive electrode plate. Both the first and second porous coatings contain filler particles.

Disclosed is a separator for an electrochemical device, the separator including a porous polymer substrate and a porous coating layer formed on at least one surface of the porous polymer substrate. The porous coating layer contains a polymer binder, inorganic particles, and an organic filler, the polymer binder being contained in an amount of 1 to 10 parts by weight based on the total weight of the porous coating layer, and the inorganic particles have a packing density of 2 g / cm3 or more to 2.5 g / cm3 or less.

A separator for an electrochemical device having a porous polymer substrate having a plurality of pores; and a porous coating layer formed on at least one surface of the porous polymer substrate. The porous coating layer includes a dispersing agent, a mixture of inorganic particles and a particle-type binder polymer, and a polyvinyl pyrrolidone binder polymer positioned on the whole or a part of the surface of the inorganic particles in the mixture of the porous coating layer to connect and fix the inorganic particles with one another. The content of the polyvinyl pyrrolidone binder polymer is 2 to 20 parts by weight based on 100 parts by weight of the total content of the particle-type binder polymer and the polyvinyl pyrrolidone binder polymer.

The present application provides a method for preparing a high-barrier, degradable, and environmentally friendly packaging material, as well as packaging materials and packaging articles. The method includes transferring and bonding a prefabricated high-resistance layer composed of a water-based, easily peelable substrate layer, a coating layer, and a water-based porous coating layer onto a paper layer to produce a plastic-free, high-barrier, degradable, and environmentally friendly packaging material. The multi-film prefabricated high-resistance layer, composed of multiple layers such as a second coating layer and a second water-based porous coating layer, has ultra-high barrier properties. The present application can save more than 68% of vacuum pump energy consumption. The resulting high-barrier, degradable, and environmentally friendly packaging material and its packaging are degradable, pollution-free, and have ultra-high barrier properties.

The invention discloses a lumbar interbody fusion cage and an implementation method thereof.The lumbar interbody fusion cage comprises a base body, the base body comprises an upper end plate and a lower end plate, and the surface curvature of the upper end plate and the surface curvature of the lower end plate are matched with the lumbar interbody curvature of the human body; the porous coatings comprise a single coating and a multi-coating, the porous coatings cover the outer surfaces of the upper end plate and the lower end plate, the porous coatings are made of biological materials, the multi-coating is composed of a plurality of different biological material layers, and each layer of the multi-coating has different porosity and biocompatibility; the supporting structure comprises a flexible hinge, a through hole is formed in the inner side of the base body, the through hole penetrates through the left side and the right side of the base body, and the flexible hinge is matched with the through hole to enable the base body to be bent to a certain extent when the base body is subjected to external force. According to the lumbar interbody fusion cage, through optimization design, the biomechanical suitability, the biocompatibility and the bone healing effect are remarkably improved.

The present disclosure relates to a separator for an electrochemical device containing a lithium manganese-based active material, including: a porous polymer substrate; and a porous coating layer which is laminated on at least one surface of the porous polymer substrate and contains inorganic particles and a polymer binder, wherein the inorganic particles have a sulfonic acid group introduced on the surface of a metal oxide or metal hydroxide, and at least a portion of the sulfonic acid group has hydrogen cations substituted with lithium cations.

The present application relates to the technical field of batteries, and particularly relates to an electrode assembly, a battery, and an electric device. The electrode assembly comprises a first electrode sheet, a second electrode sheet, a first separator, and a second separator. One of the first separator and the second separator is arranged between the first electrode sheet and the second electrode sheet, and the other one of the first separator and the second separator is arranged on the side of the first electrode sheet or the second electrode sheet facing away from the first separator; one of the first separator and the second separator does not comprise a porous coating, and the other one of the first separator and the second separator comprises a porous coating, wherein the thickness of the porous coating is 0.5 μm-8 μm. The electrode assembly of the present application comprises a specific first separator and a specific second separator, thus effectively improving the cycle performance of the battery.

The invention relates to a lithium metal negative electrode and a preparation method thereof, a lithium metal battery, a battery pack and electric equipment. The lithium metal negative electrode comprises a lithium metal layer and a porous coating which are laminated, the porous coating comprises a lithium-loving metal component and a nitrogen-containing mesoporous carbon material. The porous coating disclosed by the invention comprises the lithium-loving metal component and the nitrogen-containing mesoporous carbon material, the nitrogen-containing mesoporous carbon material is utilized to provide enough buffer space for deposition of Li ions, and nitrogen and the lithium-loving metal are utilized to further provide affinity sites for Li deposition and inhibit generation of lithium dendrites, so that the charging capacity and the cycling stability of the battery are effectively improved.

Traditional air cooled fin heat sinks, which contain heat pipes, are generally able to evacuate the heat adequately from electronic devices at low power. However, some restrictions like a high thermal resistance at high powers and an early dry-out limit their usage in new generations of CPU and GPU. The present disclosure relates to a porous coating capable of increasing the thermal performance of data processors. The coating can be applied to after-market off-the-shelf processors and increase the thermal performance in pool boiling applications. The coating can be a multi-scale electroplated porous (MuSEP) coating that increases boiling efficiency.

The invention provides an isolating membrane. The isolating membrane comprises a first porous base membrane and a second porous base membrane, a second porous base membrane; the porous coating is arranged between the first porous base membrane and the second porous base membrane, and the porous coating comprises a binder and filling particles; and the embedding depth of at least one part of the filling particles in the first porous base membrane is greater than or equal to 1 [mu] m and / or the embedding depth of at least one part of the filling particles in the second porous base membrane is greater than or equal to 1 [mu] m. When the porous coating is located between the first porous base membrane and the second porous base membrane, the binder can play a role in bonding the first porous base membrane and the second porous base membrane, and meanwhile, the depth of at least one part of the filling particles embedded into the first porous base membrane and / or the second porous base membrane is larger than or equal to 1 micron. The binding force between the porous coating and the first porous base membrane and / or the second porous base membrane is increased, and the heat resistance and nailing performance of the isolating membrane are effectively improved, so that the reliability of the battery is improved.

The present invention provides a separator for an electrochemical device, the separator comprising a porous polymer substrate and a porous coating layer formed on at least one surface of the porous polymer substrate, wherein the porous coating layer contains a polymeric binder and inorganic particles whose surfaces are modified with one or more compounds selected from coumarin and derivatives thereof, characterized in that radicals or transition metals generated during charging and discharging of the electrochemical device are removed, thereby preventing performance degradation.

A separator includes a porous substrate and a porous coating. The porous coating is disposed on at least one surface of the porous substrate. The porous coating includes inorganic particles and a binder. The separator of this application exhibits excellent thermal safety stability and mechanical stability, mainly manifested in that the Modulus of the separator at temperature T is P, satisfying: 100° C.≤T≤180° C., and 108 Pa≤P≤109 Pa.

The invention discloses a polyether-ether-ketone bicontinuous porous coating or membrane based on non-solvent induced phase separation and a preparation method thereof.The preparation method comprises the following steps that polyether-ether-ketone is dissolved in a mixed solution of methanesulfonic acid and concentrated sulfuric acid, a solution A is obtained, hydroxide, oxide or salt of metal is added into the solution A, uniform mixing is conducted, and mixed slurry is obtained; the mass ratio of the polyether-ether-ketone to the hydroxide, oxide or salt of the metal is (0.5-4): 1; and coating the surface of a substrate with the mixed slurry, placing the substrate in wet air or water for a set time, carrying out induced phase separation, and cleaning after complete curing. Alkali or metal salt is used as an additive, the starting point and path of components in the phase separation process can be regulated and controlled, then the formation and size of a bicontinuous structure are controlled, and a highly-controllable coating structure is achieved.

Provided is a method for determining the resin penetration into at least one porous coating material which is pressed with at least one carrier board and at least one resin layer arranged on the carrier board. During the pressing process the resin penetrates or rises into the at least one porous coating material.

A separator, an electrochemical device comprising the same, and an electronic device wherein the separator (30) comprises a porous substrate (31) and a porous coating layer (32) provided on at least one surface of the porous substrate (31), the porous coating layer (32) comprising a polymer, the polymer comprising polymer particles; the number of polymer particles having a maximum diameter between 5 [mu] m and 14 [mu] m is 100 to 180 in a 130 [mu] m * 100 [mu] m region of the surface of the porous coating layer (32). The large particle size polymer in the diaphragm can increase the interface gap at the corner of the electrochemical device. Therefore, in the charge-discharge cycle process of the electrochemical device, the electrolyte at the corner interface can be well infiltrated, and the corner purple spot / black spot problem of the electrochemical device is effectively improved.

The present invention relates to a kit for improving food shelf life comprising a sheet-like element component and an alkaline component. The sheet-like element component comprises a particulate filler comprising a mineral a binder and an oxygen scavenger. The oxygen scavenger is a compound comprising at least two phenolic hydroxyl groups, which can be deprotonated by the alkaline component, thus activating the oxygen scavenger. Further aspects of the present invention relate to an activated sheet-like element formed from the inventive kit, a process for the manufacture of a kit for improving shelf life, a process for the manufacture of a sheet-like element component, a process for activating the sheet-like element component, a supply device comprising the activated sheet-like element, a food packaging comprising the activated sheet-like element and the use of the kit or the activated sheet-like element in a food packaging and for prolonging food shelf life.

The invention belongs to the technical field of biological material surface modification, and discloses a medical titanium alloy surface multistage bionic composite coating and a preparation method thereof. According to the method, the medical titanium alloy is sequentially subjected to micro-arc oxidation and anodic oxidation, and the multi-stage bionic composite coating is obtained. The purpose of micro-arc oxidation is to prepare a micron porous coating, the purpose of anodic oxidation is to perform random breakdown on the surface of the micro-arc oxidation coating, a micron honeycomb-shaped pit array is further prepared, and nano-pore arrays are uniformly distributed in pits. The multi-stage bionic composite coating has the micro-nano bionic characteristic, and the biological function is further improved by preparing a series of depth-adjustable honeycomb-shaped pits and nano-pore arrays in the pits while the mechanical anchoring effect of a micron porous structure on new bone tissue is kept. Moreover, the structure has mechanical stability, so that the damage to the nano structure can be avoided when the nano structure is damaged by external force, and the structure and the function of the nano structure are still not lost.

The invention provides a diaphragm, an electrochemical device and an electronic device, and relates to the technical field of electrochemical energy storage, the diaphragm is used for the electrochemical device, the diaphragm comprises a base membrane and a porous coating arranged on at least one side of the base membrane, and the porous coating comprises graphene oxide; the lamellar thickness of the graphene oxide is a nm, the volume particle size Dv50 of the graphene oxide is z [mu] m, and z / a is greater than or equal to 1000 and less than or equal to 6000. The diaphragm provided by the invention has good thermal stability and ion transmission effect, so that the risk of lithium precipitation is effectively reduced.

The invention discloses humic acid-based coated slow-release potassium chloride and a preparation method thereof, and belongs to the technical field of biological slow-release organic and inorganic fertilizers. The fertilizer comprises the following raw materials in parts by weight: 40-55 parts of potassium chloride, 6-8 parts of humic acid, 6-9 parts of urea, 0.5-0.8 part of trace elements and 3.5-5.5 parts of a slow-release porous coating material. According to the invention, ethylenediamine and maleic anhydride are used as raw materials to prepare a functional monomer containing carboxyl and amino groups at the same time, an effective coating material enables the potassium fertilizer to release potassium ions in soil more slowly and uniformly, and the utilization efficiency of potassium is improved. The sustained-release potassium chloride disclosed by the invention has an extremely strong potassium chloride sustained-release effect on one hand, provides sufficient potassium for crops, and can effectively regulate the ecological activity of soil and improve the utilization rate of the potassium on the other hand.

This disclosure relates to a separator for a lithium secondary battery, a method of manufacturing the same, and a lithium secondary battery including the same. Specifically, the separator includes a porous coating divided into a top layer, an intermediate layer, and a bottom layer, wherein the top layer contains a higher content of a particulate binder polymer than the bottom layer, and the porous coating includes a dispersant having carboxyl and ethylene glycol groups.