416 results about "Tape casting" patented technology

The invention relates to the technical field of current collectors, in particular to a flame-retardant composite current collector and a preparation method thereof.The flame-retardant composite current collector is composed of a base film layer, metal film layers deposited on the two faces of the base film layer and flame-retardant layers formed by curing flame-retardant coatings and coated on the surfaces of the metal film layers; the preparation method comprises the following steps: S1, mixing the modified polypropylene resin, the reinforcing component, the antioxidant, the lubricant, the coupling agent and the compatilizer to obtain a mixture; s2, carrying out melt extrusion and tape casting on the mixture, and stretching through a two-way stretching process to form a base film layer; s3, metal film layers are deposited on the two faces of the base film layer, and hot press molding is conducted; s4, coating a flame-retardant coating, drying and curing to obtain the flame-retardant composite current collector, the prepared flame-retardant composite current collector has excellent flame retardance, excellent mechanical property and thermal aging resistance and high peel strength, the binding force of the metal film layer and the base film layer is firm, and the quality and safety of the composite current collector are effectively improved.

The invention discloses a high-strength and high-toughness aluminum nitride ceramic and a preparation method thereof, and relates to the technical field of ceramics, a sol-gel method is adopted to coat the surface of aluminum nitride with a stable shell layer to form a core-shell structure, meanwhile, the low lattice mismatch rate of a core-shell interface is utilized to reduce thermal resistance, and toughness and thermal conductivity are both considered; according to the external magnetic field tape casting method, the magnetic dipole moment orientation principle is utilized, an external magnetic field is applied in the tape casting stage, the in-plane mechanical property is improved, and the fracture toughness is improved through the magnetism of aluminum nitride whiskers; a reinforcement is introduced to improve the mechanical property and corrosion resistance of the aluminum nitride ceramic material, multi-granularity powder is compounded, large-particle aluminum nitride powder is used as a sintering and heat-conducting framework material, and high activity provided by submicron particles is utilized to promote sintering, so that the sintering temperature of aluminum nitride can be remarkably reduced, and the performance is greatly improved; and the aluminum nitride substrate expands more application fields on a future packaging circuit.

The invention discloses a preparation method of a textured silicon nitride ceramic substrate, and belongs to the technical field of ceramic products. Beta-silicon nitride whiskers with the long diameter of 4-15 microns and the short diameter of 1-3 microns are added into silicon nitride ceramic slurry according to the design, and when the whiskers containing beta-silicon nitride pass through a scraper of a casting machine, the whiskers tend to be directionally arranged in the casting direction, so that a textured structure is generated in the silicon nitride ceramic substrate. The textured structure is beneficial to improving the three-point bending strength, the fracture toughness and the thermal conductivity in the horizontal direction of the ceramic substrate.

The invention relates to the technical field of composite materials, in particular to a heat and sound insulation PVB intermediate film and a preparation method thereof. The problem that a PVB intermediate film is insufficient in heat insulation and aging resistance is solved. The preparation method comprises the following steps: pre-plasticizing PVB resin, shearing and mixing the pre-plasticized PVB resin and silane coupling agent modified enhanced nano cellulose, sequentially adding additives such as a plasticizer, molybdenum trioxide loaded lanthanum hexaboride, a composite light stabilizer and modified cerium oxide, and carrying out tape casting and hot pressing treatment to obtain the PVB intermediate film. Wherein the modified lanthanum hexaboride enhances infrared ray shielding, the composite light stabilizer and the modified cerium oxide synergistically improve the aging resistance, all the components are subjected to substance cooperation and process cooperation, comprehensive improvement of heat insulation, sound insulation and aging resistance of the PVB intermediate film is achieved, and the PVB intermediate film is suitable for the field of high-strength building glass.

The invention discloses a high-interface-stability composite solid electrolyte membrane as well as a preparation method and application thereof. The composite solid electrolyte membrane comprises a gradient aperture three-dimensional porous skeleton formed by sintering inorganic solid electrolyte particles, a polymer electrolyte filled in a pore channel, and a plastic interface stable layer positioned between the electrolyte membrane and an electrode. The preparation method comprises the following steps: preparing a gradient aperture porous framework through a pore-forming agent template method and a tape casting technology, dipping and filling a polymer electrolyte precursor solution in a solution, accelerating in-situ polymerization by adopting electric induction, and performing hot-pressing treatment. The composite solid-state electrolyte membrane has high ionic conductivity, excellent interface compatibility and high mechanical strength, can effectively inhibit the growth of lithium dendrites, can be applied to solid-state batteries such as lithium metal batteries, lithium sulfur batteries and lithium air batteries, and can remarkably prolong the cycle life and improve the safety performance of the batteries, and the preparation process is suitable for large-scale production.

The invention belongs to the technical field of silicon nitride ceramic substrates, and particularly relates to a high-thermal-conductivity and high-breaking-strength silicon nitride substrate and a sintering method and application thereof. In order to simultaneously improve the thermal conductivity and the breaking strength of the existing silicon nitride ceramic substrate and ensure the stability and the consistency of the performance during the production of the silicon nitride substrate, the method comprises the following steps: coating the surface of a silicon nitride ceramic biscuit subjected to tape casting with isolation powder, carrying out nitrogen or air atmosphere glue removal treatment, and then sintering; in the sintering process, the cooling process is optimized, a multi-temperature heat preservation platform is arranged above the liquid phase conversion temperature, grain growth and grain boundary composition of the silicon nitride ceramic are regulated and controlled, grain size distribution of the silicon nitride ceramic is made to be more uniform, the grain boundary structure is made to be more optimized, and the heat conductivity coefficient and breaking strength of the substrate are remarkably improved. Meanwhile, the uniformity of a temperature field in the sintering furnace can be greatly improved through the sintering method, it is ensured that the product can reach the consistent performance standard in different areas, and the stability and reliability of the product are improved.

The invention provides a method for preparing a beta ''-aluminum oxide ceramic membrane through tape casting, and belongs to the field of conductive ceramic materials. The method comprises the following steps: carrying out first ball milling on a high-purity aluminum-containing compound, a sodium-containing compound, a stabilizer, a dispersant and a solvent to obtain first slurry; adding a binder, a plasticizer and a foam inhibitor into the first slurry to obtain second slurry; performing second ball milling on the second slurry to obtain third slurry; defoaming the third slurry to obtain fourth slurry with set viscosity; carrying out tape casting on the fourth slurry to obtain an aluminum oxide green body; and degumming, pre-sintering and sintering the aluminum oxide green body to obtain the beta ''-aluminum oxide ceramic membrane. Therefore, the beta ''-aluminum oxide ceramic membrane with controllable thickness, stable quality and low resistivity is obtained, and the application performance of the beta''-aluminum oxide ceramic membrane is improved.

The invention discloses a damp-heat-resistant polylactic acid transparent film and a preparation method thereof, and relates to the technical field of polymer packaging materials. According to the preparation method of the damp-heat-resistant polylactic acid transparent film, the nucleating agent, the anti-hydrolysis agent, the compatilizer and the polylactic acid resin are subjected to blending granulation and then subjected to tape casting processing, and a film blank is obtained; stretching the thin film blank at a preset temperature, then shaping the thin film blank, heating the thin film blank to 150 DEG C or above in a shaping state, keeping the temperature for 10-15 minutes, then cooling the thin film blank to a preset stretching temperature, and repeating the stretching-heating shaping-cooling process for 2-6 times to obtain the damp-heat-resistant polylactic acid transparent film product. The nucleating agent, the anti-hydrolysis agent, the compatilizer and the polylactic acid resin are compounded and matched with a multi-time stretching process, so that a large number of microcrystals are formed in the polylactic acid, the heat-resistant temperature of the polylactic acid film is increased, and the toughness and transparency of the polylactic acid film are kept.

The invention relates to the technical field of electronic ceramic green bodies, in particular to a glue discharging method of an electronic ceramic green body. Comprising the following steps: step 1, ball-milling raw materials, and carrying out tape casting to obtain a ceramic green body; 2, the ceramic green bodies are subjected to powder coating and stacked into a stack, and laminated green bodies are obtained; 3, in the nitrogen atmosphere, primary glue discharging is conducted on the laminated green body, and a primary glue-discharged green body is obtained; 4, in the nitrogen atmosphere, the primary degummed green body is subjected to secondary degummed, and a secondary degummed green body is obtained; 5, under the nitrogen atmosphere, high-temperature vacuum carbon removal is conducted on the secondary rubber-removed green body, and a high-temperature carbon-removed green body is obtained; 6, under the nitrogen atmosphere, the high-temperature carbon-removed green body is rapidly cooled; and obtaining the electronic ceramic body.

The invention discloses a sintering method of a composite SiC aluminum oxide electrostatic chuck ceramic plate, and belongs to the technical field of electrostatic chucks, the sintering method comprises the following steps: S1, modification and pre-oxidation treatment modification: controlling the residual amount of carbon black in reaction in the process of synthesizing silicon carbide to obtain nano silicon carbide powder with different carbon contents; pre-oxidizing, namely pre-oxidizing the modified silicon carbide, and then annealing and crystallizing under the protection of argon atmosphere; s2, tape casting: carrying out ball milling on the modified nano silicon carbide in a bedroom sand mill, pre-grinding the ball-milled nano silicon carbide powder, a solvent and a dispersing agent in a planetary mill, then mixing and grinding with aluminum oxide powder, finally adding an adhesive for grinding, and carrying out tape casting after grinding to obtain a ceramic green body; and S3, high-temperature sintering is carried out, specifically, a ceramic green body obtained through tape casting is subjected to glue discharging in wet nitrogen, pressurized sintering is carried out in a certain Ar atmosphere in an HP furnace, and the composite SiC aluminum oxide electrostatic chuck ceramic disc is obtained through sintering.

The invention relates to the technical field of current collectors, in particular to a diversion method of a functional current collector. The composite carbon nanotube is obtained by sequentially carrying out oxidation treatment, acylating chlorination treatment, modification treatment, amination treatment and graft polymerization treatment on a multi-wall carbon nanotube. Uniformly mixing the PET resin, the composite carbon nanotubes, a surfactant and a coupling agent, and carrying out standing, melt extrusion, tape casting, sheet casting treatment and two-way stretching to obtain the PET base film. The preparation method comprises the following steps: sequentially sputtering a copper layer on the surface of a PET (Polyethylene Terephthalate) base film, carrying out water electroplating on the copper layer, then coating the surface of the copper layer with an active substance, and then directly dipping a conductive adhesive solution in a lug position which is not plated with copper to obtain a pole piece; and stacking a plurality of pole pieces together, and inserting a current collector at the center of the stack to obtain the functional current collector. The functional current collector prepared by the method has good conductivity and mechanical property, so that the functional current collector has a wide application prospect in the technical field of current collectors.

The invention relates to the field of communication, and discloses an antenna unit, an AIP module and a phased-array antenna, the antenna unit comprises metal layers and low-temperature co-fired ceramic layers which are sequentially and alternately stacked from bottom to top, and the antenna unit is prepared according to the following process: ceramic powder is processed into a green tape through a tape casting technology; sequentially laminating the green ceramic tape and the metal layer to form a laminated structure; the uppermost layer of the stacked structure is a metal layer, and the metal layer comprises an antenna radiation layer, a coupling feed layer and a reference ground layer; applying pressure to the laminated structure and heating the laminated structure to form a green ceramic chip structure; heating the green ceramic chip structure to remove colloid in the green ceramic tape; and co-firing the green ceramic chip structure, and changing the green ceramic tape into a low-temperature co-fired ceramic layer to obtain the antenna unit. The low-temperature co-fired ceramic technology can provide a dielectric material with lower loss and a reliable multi-layer process, and is easier to integrate and miniaturize. Compared with a PCB, the manufacturing process of the antenna unit is simpler, the processing cost can be reduced, and the yield of the antenna unit is improved.

The invention belongs to the field of electronic ceramic materials, and particularly relates to a method for preparing tape-casting slurry of a silicon nitride substrate, a stirring mill instead of a traditional ball mill is adopted in the early stage of preparing the tape-casting slurry, the dispersion effect of silicon nitride powder and a sintering aid can be effectively improved, the grinding time of the silicon nitride powder is effectively shortened, and the production cost is reduced. The phenomenon that the casting effect is affected due to the fact that the main powder is ground too fine is avoided, and it can be guaranteed that the sintering aid can be evenly distributed in the main powder; a small amount of a high-boiling-point solvent is added into a solvent system, so that the phenomenon that in the tape casting process, due to the fact that the surface of the slurry volatilizes too fast and peels, volatilization of the solvent in the lower layer of the slurry is hindered and uneven is avoided.

The invention provides a preparation method of a high-thermal-conductivity 99 aluminum oxide ceramic substrate, and belongs to the field of electronic ceramic materials. The method comprises the following steps: homogenizing and grinding a high-purity aluminum-containing compound and a modifier to obtain pretreated powder; mixing the pretreated powder with a carrier gas, and carrying out melt spheroidization to obtain a submicron spherical alumina precursor raw material; homogenizing and defoaming the submicron spherical aluminum oxide precursor raw material, an inorganic sintering aid, a dispersing agent, a binder, a plasticizer and a foam inhibitor in a solvent to obtain ceramic slurry; carrying out tape casting on the ceramic slurry to obtain an aluminum oxide green body; the alumina green body is subjected to rubber discharging, pre-sintering and sintering, and the 99 alumina ceramic substrate is obtained. The submicron spherical alumina powder is prepared through a melt spheroidizing process, the surface of the powder is smooth, particle size distribution is concentrated, grain boundary resistance between the powder is remarkably reduced, sintering densification is promoted, and therefore the technical problems that existing tape casting slurry is poor in stability and high in sintering temperature, and consequently microdefects are caused are solved.

The invention discloses a preparation method of an ABM ceramic substrate with a metal through hole, and particularly relates to the technical field of ceramic substrates, a Si3N4 ceramic substrate is prepared through tape casting and hot pressed sintering, a conical stepped through hole is processed by using ultrafast femtosecond laser, the aperture of the through hole is 100-300 [mu] m, and the smoothness of the wall of the through hole is Rat; 1 [mu] m; performing oxygen plasma activation on the inner wall of the through hole to generate a Si-O active group; sputtering a nano titanium transition layer to enhance metal-ceramic interface bonding; the through holes are filled layer by layer through pulse electrochemical deposition, the current density is controlled, and a compact non-porous structure is achieved; in-Sn-Ag low-temperature active brazing filler metal is used, and a surface copper layer is bonded under the assistance of plasma; a fine circuit is formed through photoetching and micro-electroplating, the line width and the spacing of the circuit are the same, and the line width and the spacing of the circuit are both smaller than 20 microns; etching a micro-channel network on the back surface of the substrate by using ultraviolet laser, and filling heat-conducting silicone grease; and finally, carrying out vacuum annealing for 2 hours in an environment with the temperature of 250 DEG C.

The invention relates to an electric heating anti-icing multi-layer structure based on a copper-clad PI film and graphene. The electric heating anti-icing multi-layer structure sequentially comprises a surface insulating layer, an adhesive film layer, a graphene heating layer, an adhesive film layer and a surface insulating layer, and the graphene heating layer is provided with a copper-clad PI film layer. The method comprises the following steps: etching a copper foil on a polyimide film to obtain an etched copper electrode film; the preparation method comprises the following steps: uniformly dispersing graphene and polyimide resin through vacuum stirring, coating the surface of a polyimide electrode film with the graphene and polyimide resin through a tape casting method, and performing high-temperature curing to obtain a graphene heating layer with smooth appearance and uniform sheet resistance; and molding the heating layer and the composite material through an autoclave to obtain the wing-shaped electric heating anti-icing assembly.

The invention relates to the field of ceramic materials, provides a high-voltage-resistant PTC (Positive Temperature Coefficient) thermal sensitive ceramic material as well as a preparation method and application thereof, and aims to improve the voltage resistance and PTC effect stability of thermal sensitive ceramic. The material is composed of aluminum oxide-coated manganese-doped barium titanate nanorods, hollow-core silicon dioxide microspheres and a glass phase sintering aid, and the electric heating performance and the microstructure stability are optimized by constructing a core-shell structure and a three-dimensional composite system. A hydrothermal method and a sol-gel method are adopted to precisely control a raw material structure, and alcohol dispersion, tape casting and weak oxidizing atmosphere sintering are combined, so that the compactness and consistency of the ceramic are ensured. The material is suitable for high-voltage temperature control elements and over-current protection devices, and is widely applied to the fields of new energy automobile battery pack over-temperature protection, high-voltage power equipment current limiting elements, industrial automatic temperature control switches and the like.

The invention discloses a preparation method for preparing a silicon nitride substrate by adopting water-based tape casting silicon powder slurry in the technical field. The preparation method comprises the following steps: step 1) preparation of tape casting slurry: weighing silicon powder, an inorganic sintering aid, a dispersing agent, a water-based binder and a plasticizer; the preparation method comprises the following steps: adding a water solvent into silicon powder, carrying out ball milling, adding a water-based binder and a plasticizer into a ball milling tank, and defoaming slurry obtained after ball milling at a set vacuum degree to obtain slurry; (2) preparing a green body: carrying out tape casting on the adjusted slurry; and (3) degreasing: spraying and coating powder on the cut green body sheets of the silicon powder, stacking the green body sheets and then putting the green body sheets into a glue discharging furnace for degreasing to obtain a uniform and consistent degreased green body. And 4) sintering: transferring the degreased green body into a sintering furnace, raising the temperature to a nitriding temperature, firstly nitriding, then raising the temperature to a sintering temperature, carrying out heat preservation, and then carrying out furnace cooling to obtain the silicon nitride substrate. According to the invention, the cost is reduced on the premise of ensuring environmental protection.

The invention relates to the field of textured low-temperature co-fired ceramic materials, in particular to a textured low-temperature co-fired ceramic material and a preparation method thereof. According to the invention, a part of Al2O3 powder is replaced by flaky alpha-Al2O3, and the flaky alpha-Al2O3 is directionally arranged in the green tape along the tape casting direction through tape casting, so that the arrangement mode can play a role in increasing crack deflection and bridging in the fracture process of the textured low-temperature co-fired ceramic material; the bending strength of the textured low-temperature co-fired ceramic material is improved, and therefore the technical problem that an existing textured low-temperature co-fired ceramic material is poor in mechanical property is solved.

The invention belongs to the field of ceramic substrate manufacturing, and particularly relates to a ceramic substrate tape casting method based on a light-humidity dual-curing system, which comprises the following steps: S1, preparing raw materials; s2, preparing slurry; s3, adding a cross-linking agent; s4, defoaming treatment is carried out; s5, carrying out tape casting; s6, primary curing; s7, carrying out drying treatment; and S8, sintering treatment. According to the ceramic substrate tape casting method based on the light-humidity dual-curing system, ethyl acetate and butyl acetate are used as solvents and are harmless to human bodies and the environment, organic solvents such as ethyl acetate have small surface tension, capillary force caused in the drying process is small, a tape casting green body can be effectively prevented from being dried and cracked, and the service life of the tape casting green body is prolonged. The EBECRYL series acrylic acid cross-linking agent is used as the curing agent, the addition amount of effective components is small (smaller than 5%), good flexibility is achieved after preliminary curing, safe cutting of the tape-casting green body can be achieved, and the tape-casting green body can be stored easily.

The invention belongs to the technical field of ceramic material preparation, and particularly discloses low-warpage laminated sheet ceramic and an anti-warpage preparation method of the laminated sheet ceramic. The warping degree of the low-warping laminated sheet ceramic at least accounts for 100% when the warping degree is smaller than side length * 0.1%. According to the anti-warping preparation method of the laminated sheet ceramic, residual stress distribution in a ceramic green body obtained after tape casting is adjusted to the maximum extent in a rotating and oppositely-stacking lamination mode; and meanwhile, the temperature isostatic pressing and sintering processes are synergistically treated by adopting multiple sections of programs, so that the problems of sintering warping, low production yield and the like of the laminated sheet ceramic are efficiently solved at low cost. According to the anti-warping preparation method, the solid content of the tape-casting slurry does not need to be increased, a scheme for improving the warping rate by increasing the solid content in the prior art is avoided, and the defects that dispersion is easy and uneven, the tape-casting effect is affected and the like due to the high solid content can also be avoided due to the low solid content.

The invention relates to the technical field of ceramic materials, in particular to a preparation method of a zirconium oxide toughened aluminum oxide ceramic substrate, which comprises the following steps: 1, pretreating a powder material; step 2, preparing slurry; step 3, tape casting; step 4, stamping and forming; and 5, sintering. Before the slurry is prepared, the aluminum oxide powder and the zirconium oxide powder are uniformly mixed and then subjected to plasma treatment, so that the surface activity of the mixed powder of the aluminum oxide and the zirconium oxide is improved, the grain structure of the mixed powder of the aluminum oxide and the zirconium oxide is changed, and the toughening effect of the zirconium oxide on the aluminum oxide ceramic substrate is improved.

The invention relates to the technical field of ceramic manufacturing processes, and particularly discloses a preparation method of a 96 aluminum oxide ceramic substrate, which comprises the following steps: slurry preparation: carrying out ball milling treatment on high-purity aluminum oxide powder, a sintering aid, a binder, a plasticizer, an organic solvent and a dispersing agent, and fully mixing to obtain tape casting slurry; forming a green body, coating a carrier film with the tape casting slurry through a tape casting machine with a wet film which is uniform in thickness and flat in surface, and drying the carrier film through a drying box in a partitioned manner to obtain a cured green body; and sintering densification treatment: carrying out glue removal treatment on the green body, and carrying out stepped heating sintering to obtain the 96 aluminum oxide ceramic substrate. According to the 96 aluminum oxide ceramic substrate prepared by the scheme, a large number of uniform crystal cores can be formed, small crystal grains can be dissolved, large crystal grains grow at a constant speed, and the uniformity of the crystal grain size is ensured, so that scattering of phonons on a crystal boundary can be reduced, and a structural foundation is laid for improvement of heat conductivity.

The invention relates to the field of aluminum nitride ceramic substrates, provides a preparation method of a high-thermal conductivity aluminum nitride substrate, and solves the defects of low thermal conductivity and insufficient mechanical strength of an aluminum nitride substrate obtained by adopting a preparation method in the prior art. Comprising the following preparation processes: (1) preparing raw materials and auxiliary materials; (2) mixing the raw materials and the auxiliary materials; (3) tape casting; (4) aging; (5) pre-flattening treatment; (6) sintering; and (7) post-treatment.

The invention belongs to the technical field of silicon nitride tape-casting blank waste recycling, and particularly relates to a silicon nitride tape-casting blank waste recycling method, a tape-casting blank and application, the silicon nitride tape-casting blank waste and a liquid medium are mixed according to the mass ratio of 10: (3-4), wet ball milling is conducted for 5-36 h, and slurry is obtained; wherein the particle size of a ball milling medium for wet ball milling is 8-12mm; the slurry is filtered and then subjected to tape casting, and a tape casting blank is obtained; according to the method, recycling of the waste materials can be achieved only by adopting a wet ball milling method, the cost is effectively reduced, the waste material recovery rate can reach 90% or above, the silicon nitride ceramic substrate prepared from the casting blank can meet the use requirement, the utilization efficiency of the silicon nitride casting blank waste materials is effectively improved, and the silicon nitride ceramic substrate has the advantages of being environmentally friendly and free of pollution. And the production cost is reduced.

The invention relates to the field of high-performance ceramics and bulletproof, in particular to a high-toughness layered boron carbide bulletproof ceramic and a preparation method thereof. The preparation method of the layered boron carbide bulletproof ceramic comprises the following steps: step 1, adding boron carbide powder and a sintering aid into a mixed solvent, then adding a dispersing agent, a binder and a plasticizer, and carrying out mixing and ball milling to obtain ceramic slurry; step 2, preparing the ceramic slurry into a boron carbide ceramic biscuit sheet by adopting a tape casting process; and laminating the boron carbide ceramic biscuit sheets, pressing, and carrying out hot pressed sintering to obtain the layered boron carbide bulletproof ceramic. Through the layered structure design, the controllable preparation of the layered boron carbide bulletproof ceramic is realized, so that the layered boron carbide bulletproof ceramic shows the characteristics of high strength and high toughness under the action force vertical to the layered direction, and the actual application effect of the layered boron carbide bulletproof ceramic is improved. Meanwhile, the layered structure provided by the invention has designability and operability, and the preparation process is simple.

The invention relates to the technical field of energy storage capacitor dielectrics, and provides a high-entropy ceramic-polymer composite energy storage dielectric thin film material, a preparation method and application. The chemical composition of the material disclosed by the invention can be expressed as Sr0. 7Bi0. 2TiO3 (at) (Ba0. 25Ca0. 25La0. 25Na0. 25) TiO3 / PVDF, and is abbreviated as SBT (at) BCLNT / PVDF, the PVDF is polyvinylidene fluoride, the ratio of BCLNT to SBT is 9 wt%-18 wt%, and the ratio of SBT (at) BCLNT to PVDF is 3 wt%-12 wt%. The SBT coated BCLNT is subjected to high-entropy treatment to obtain the SBT coated BCLNT high-entropy ceramic filler with a'core-shell 'structure; and preparing the SBT-coated BCLNT / PVDF high-entropy ceramic-polymer composite energy storage dielectric film by taking the PVDF polymer as a base material and adopting a tape casting method.

The invention relates to the technical field of polymer functional material processing, and particularly discloses a polyethylene waterproof breathable film using PTFE micro powder as an opening agent and a preparation method of the polyethylene waterproof breathable film. The waterproof breathable film is prepared from the following components in parts by weight: 50-70 parts of linear low-density polyethylene, 10-40 parts of PTFE (Polytetrafluoroethylene) micro powder, 3-8 parts of a modified compatilizer and an auxiliary agent. The preparation method comprises the following steps: S1, activating PTFE micro-powder by a silane coupling agent and coating the PTFE micro-powder with polyethylene wax to obtain modified micro-powder; s2, uniformly mixing all the components; s3, carrying out melt extrusion at 180-210 DEG C through a double-screw extruder, and carrying out tape casting to form a cast sheet; s4, the casting piece is heated to 90-115 DEG C for two-way stretching, and micropores are formed through interface stripping between the PTFE particles and the base body; and S5, carrying out heat setting at 120-130 DEG C, cooling, and rolling to form the film. Through the synergistic effect of the self-made compatilizer and the pretreatment process, the interface anchoring force is enhanced, the problems of powder falling and water leakage of highly-filled PTFE are solved, and meanwhile, high moisture permeability, high hydrostatic pressure resistance and high mechanical property are taken into account.

The invention belongs to the technical field of photovoltaic packaging adhesive films, and particularly relates to an assistant precipitation resistant anti-slip POE packaging adhesive film and a preparation method thereof, and the preparation method comprises the following steps: S1, mixing raw materials, and uniformly stirring to obtain a micro-foaming layer raw material and a skeleton layer raw material; s2, performing melt extrusion, namely performing melt extrusion on the raw materials of the framework layer through a single-screw extruder, and controlling the extrusion temperature and the screw rotating speed to obtain the framework layer; s3, supercritical fluid micro-foaming extrusion is conducted, specifically, raw materials of a micro-foaming layer are subjected to melt extrusion through a co-rotating twin-screw extruder, the extrusion temperature and the screw rotating speed are controlled, supercritical fluid carbon dioxide is introduced in the extrusion process to serve as a foaming agent, then heating foaming is conducted, the adding amount of the foaming agent is 0.5%-2% of the mass of matrix resin, the foaming temperature is 160-200 DEG C, the foaming pressure is 10-20 MPa, and the foaming layer is obtained; a micro-foaming layer is obtained; and S4, tape casting: carrying out three-layer co-extrusion on the micro-foaming layer, the skeleton layer and the micro-foaming layer to form an ABA structural adhesive film, thereby obtaining the POE packaging adhesive film.

The invention relates to the technical field of high-temperature sintering, and particularly discloses a gradient composite kiln furniture based on spinel interface strengthening and a preparation method thereof. Wherein the kiln furniture sequentially comprises a mullite matrix layer, a silicon carbide enhancement layer and a zirconium oxide high-temperature-resistant layer from outside to inside, and the layers are chemically bonded through an in-situ generated MgAlO spinel interface layer. The preparation method comprises the following steps: carrying out layered tape casting on gradient slurry, carrying out isostatic pressing lamination molding, generating an MgSi transition phase at 1380-1420 DEG C through a stepped sintering process, and heating to 1600-1650 DEG C at a specific heating rate to form a continuous spinel interface. According to the kiln furniture, gradient component design cooperates with spinel interface strengthening, the problem of interface stripping caused by thermal expansion mutation of a traditional double-layer structure is solved, and the kiln furniture has excellent thermal shock stability and high-temperature strength retention rate. According to the preparation method, precise construction of the spinel interface is realized through staged reaction control.