107 results about "Tape casting" patented technology

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 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 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 discloses a preparation method of a high-strength aluminum oxide ceramic substrate, which comprises the following steps: firstly, modifying aluminum oxide powder by a liquid phase method, and coating a layer of nano magnesium oxide on the surface of the aluminum oxide powder; then carrying out ball milling treatment on the modified powder, rare earth metal oxide, metal oxide, an organic solvent, a binder, a plasticizer and a dispersing agent together, then carrying out defoaming, tape casting, drying and laminated hot pressing to obtain a ceramic green body, and finally carrying out sintering molding in an air atmosphere to obtain the ceramic. The nano magnesium oxide active coating layer constructed in situ and the added exogenous sintering aid act together, so that uniform growth of isometric crystals is promoted, development of a small amount of dominant oriented grains is directionally induced, a composite enhanced microstructure is formed, atomic scale super-uniform distribution and optimal interface combination of the nano magnesium oxide and the exogenous sintering aid are realized, and the nano magnesium oxide / exogenous sintering aid composite material is prepared. The bending strength of the obtained alumina ceramic can reach up to 881 MPa.

The invention provides an LTCC raw material belt with a high thermal expansion coefficient, an LTCC substrate and a preparation method of the LTCC substrate, the LTCC raw material belt with a smooth surface and a uniform thickness is obtained through tape casting by adjusting the proportion of silicon dioxide ceramic powder, MgTiO3 ceramic, SrTiO3 ceramic, Li2MgSiO4 ceramic, BCBS, ZABS and LASP microcrystalline glass powder, the LTCC raw material belt is sintered in a nitrogen furnace at 880-940 DEG C for 1-3 h, and the LTCC raw material belt can be co-fired with low-cost copper electrode slurry to be flat and tightly attached to the low-cost copper electrode slurry. The LTCC substrate with the thermal expansion coefficient larger than 11 ppm / DEG C is prepared, under the test frequency of 5 GHz, the dielectric constant of the LTCC substrate ranges from 5.1 to 6.1, the dielectric loss ranges from 0.0025 to 0.004, the bending strength ranges from 170 MPa to 230 MPa, the thermal expansion coefficient at the temperature ranging from 30 DEG C to 400 DEG C ranges from 11.0 ppm / DEG C to 13.0 ppm / DEG C, and acid resistance is good.

The invention discloses a high-reliability packaging quality assessment method and system based on multi-source process data, and relates to the technical field of quality assessment, and the method achieves the online sensing of the orientation consistency of casting ceramic particles through the nondestructive scanning of an unsintered green tape by adopting a terahertz spectrum. Material waste and procedure interruption caused by destructive detection are avoided; secondly, the cutting edge morphology is synchronously collected in the scribing process, geometric feature quantification is carried out, the recognition of the edge breakage state is improved from subjective qualitative judgment to objective quantitative characterization, and the detection consistency and precision are remarkably improved; the frequency spectrum coding data reflecting the internal quality and the shape coding data reflecting the external defects are associated point by point, and a two-dimensional mapping relation of the internal process parameters and the external processing results is constructed, so that whether the cutting edge breakage is derived from potential abnormity in a tape casting stage or not can be accurately traced; and a data closed loop is provided for backtracking optimization of process parameters.

The invention discloses a preparation method of a zirconium oxide toughened aluminum oxide ceramic substrate, which comprises the following steps: respectively carrying out surface modification on aluminum oxide powder and zirconium oxide powder by adopting a coupling agent, a catalyst and a cross-linking agent, then mixing the two modified powder with a rare earth sintering aid, a dispersing agent, a binder and a plasticizer, and carrying out ball milling treatment, thereby obtaining the zirconium oxide toughened aluminum oxide ceramic substrate. Carrying out tape casting and sintering processes to obtain a target ceramic substrate; the preparation method is simple, the process is easy to control, the bending strength of the prepared zirconium oxide toughened aluminum oxide ceramic substrate can reach 847 MPa at most, and the fracture toughness can reach 7.6 MPa.m < 1 / 2 > at most.

The invention relates to a high-strength light waist protection cushion and a preparation method thereof, and relates to the technical field of waist protection cushions, the high-strength light waist protection cushion comprises an upper outer surface coating material, a lower outer surface coating material and an inner container connected between the upper outer surface coating material and the lower outer surface coating material, the upper outer surface coating material and the lower outer surface coating material are integrally formed, the upper outer surface coating material and the lower outer surface coating material form an accommodating space for filling the inner container; the high-density outer surface coating material is prepared from high-density raw materials in a tape casting or spraying forming mode, the process is simple and efficient, an exoskeleton structure formed by the outer surface coating material can guarantee the appearance integrity of a seat product, the hardness of the seat product is improved, and the service life of the seat product is prolonged. The inner container is formed by injecting the high-temperature low-density raw material into the outer surface coating material, the inner container can provide additional support for the upper outer surface coating layer, the structural stability of a seat product is improved, and a product structure which cannot be manufactured through a traditional technology can be manufactured through the mode.

The invention discloses a high-bending-resistance and low-dielectric-loss LTCC substrate preparation method and an LTCC substrate, and the method comprises the steps: mixing inorganic powder, an organic system and a solvent through ball milling, dissolving and stirring, and preparing a green ceramic chip through a tape casting technology; carrying out lamination, warm isostatic pressing, cutting, glue discharging and sintering on the green ceramic chip to obtain the LTCC substrate; the inorganic powder comprises sodium borosilicate glass, aluminum oxide and mullite whiskers. According to the invention, the sodium borosilicate glass is used as a glass phase, the mullite whisker and the alumina powder are used as ceramic phases, and the excellent mechanical properties and extremely low dielectric loss of the mullite whisker are utilized to modify the sodium borosilicate glass-alumina composite material. The problems that an existing sodium borosilicate glass-aluminum oxide LTCC composite material is low in bending strength and high in dielectric loss are solved.

This invention relates to the field of ceramic casting technology and discloses a ceramic casting slurry and its preparation method. The ceramic casting slurry contains a main agent and auxiliary agents. Based on the total mass of the ceramic casting slurry, the main agent includes 49wt%-61wt% of calcined ceramic powder, 9wt%-20wt% of alcohol compounds, 15wt%-26wt% of non-alcoholic organic solvents, and 0.3wt%-0.8wt% of dispersant. The non-alcoholic organic solvents consist of organic solvent I and organic solvent II in a mass ratio of (0.6-3):1. Organic solvent I is selected from C4-C7 organic solvents, and organic solvent II is selected from C6-C8 organic solvents. The ceramic casting slurry provided by this invention has good stability, high solid content, and good powder dispersion, which is beneficial for improving the strength of the cast sheets and ceramics, and solves the problem that large-particle calcined ceramic powder cannot be directly used in casting production.

The invention discloses a plasma corrosion resistant silicon nitride ceramic composition, tape casting slurry, a tape casting sheet, a green body sheet, a green body block, a ceramic, a preparation method, an electrostatic chuck and a semiconductor equipment part, and belongs to the technical field of semiconductor ceramic materials. The plasma corrosion-resistant silicon nitride ceramic composition provided by the invention comprises the following raw materials in parts by mole: 85-95 parts of silicon nitride and 5-15 parts of a sintering aid, wherein the sintering aid comprises a metal fluoride sintering aid. By introducing the fluorine-containing and / or nitrogen-containing compound sintering aid, a stable grain boundary phase is formed in a fluorine-containing plasma environment, synergistic protection is realized, different plasma environments are adapted, the corrosion resistance of the Si3N4 ceramic is improved, the defect of poor plasma corrosion resistance is overcome, sufficient liquid phase sintering is ensured by optimizing the ratio of the aid, and the service life of the Si3N4 ceramic is prolonged. Meanwhile, the grain boundary is prevented from being too thick; and the thermal expansion coefficient is stabilized at 2.6-3.1 * 10 <-6 > / DEG C, and is highly matched with a silicon wafer.

The invention relates to the field of high polymer materials, in particular to a high-definition perspective TPEE film, a preparation method and application. The invention discloses a high-definition perspective TPEE film which is prepared from the following components in percentage by weight: basic resin TPEE, a high-definition additive, a weather-resistant stabilizer, an antioxidant, an antistatic agent, an anti-scraping agent and a compatilizer, and further provides a preparation method of the TPEE film, the preparation method comprises the following steps: pre-mixing the components, performing melt blending through a twin-screw extruder, and finally forming the film through a tape casting method or a film blowing method, so as to obtain the high-definition perspective TPEE film. Meanwhile, the invention discloses application of the TPEE film in a high-definition display screen, a high-end packaging material or special optical equipment. The prepared TPEE film has high-definition perspective performance, the film thickness is 50-200 microns, the light transmittance is larger than or equal to 91%, the haze is smaller than or equal to 1.2%, the yellowing index delta b is smaller than or equal to 0.6, and the TPEE film has the effects of weather resistance, oxidation resistance, static electricity resistance, scraping resistance and the like.

The invention relates to high-solid-content AlN ceramic slurry for tape casting, a substrate and a preparation method of the substrate, and belongs to the field of ceramic substrates. The ceramic slurry is prepared from the following components in percentage by mass: 60 to 68 weight percent of high-purity AlN powder, 3 to 6 weight percent of dispersing agent, 3 to 5 weight percent of binding agent, 4 to 6 weight percent of plasticizer, 3 to 6 weight percent of sintering aid and 32 to 45 weight percent of solvent, the mass ratio of the plasticizer to the binder ranges from 3: 5 to 4: 5. By regulating and controlling the proportion of the dispersing agent in the AlN ceramic slurry and the solid content of the high-purity AlN powder, the slurry has excellent flowability, dispersity and stability while maintaining high solid content, and is suitable for a tape casting process. The AlN ceramic substrate prepared through sintering is high in density and excellent in heat conductivity, and engineering application can be achieved.

The invention relates to a bone-like layered calcium silicate / tricalcium phosphate heterogeneous biological ceramic as well as a preparation method and application thereof. The preparation method of the bone-imitating layered calcium silicate / tricalcium phosphate heterogeneous biological ceramic comprises the following steps: (1) mixing calcium silicate powder, an additive and a solvent to obtain calcium silicate tape casting slurry; mixing the tricalcium phosphate powder, an additive and a solvent to obtain tricalcium phosphate tape casting slurry; (2) respectively carrying out tape casting on the calcium silicate tape casting slurry and the tricalcium phosphate tape casting slurry to obtain a calcium silicate green tape and a tricalcium phosphate green tape; (3) alternately laminating the calcium silicate green tape and the tricalcium phosphate green tape, and performing pressurization treatment to obtain a composite ceramic body; and (4) degumming and sintering the composite ceramic green body to obtain the bone-like layered calcium silicate / tricalcium phosphate heterogeneous biological ceramic.

The invention relates to the field of electronic ceramic substrates, provides a preparation method of a black aluminum oxide substrate, and solves the defects of low heat conductivity and low mechanical strength of the existing black aluminum oxide substrate due to the defects of a preparation process. The preparation method comprises the following steps: (1) preparing raw materials; (2) preparing slurry; (3) tape casting; (4) discharging glue; (5) sintering; (6) annealing; and (7) surface treatment.

The invention provides metal ceramic for cable cutting and a preparation method and application thereof. The method comprises the following steps: preparing ceramic powder; the ceramic powder is flaky powder of metal oxide and / or metal hydroxide; mixing the nickel powder, the ceramic powder and the carbon powder; tape casting slurry is prepared; casting and drying to obtain a single-layer casting sheet; selecting a single-layer cast sheet, performing overlying molding, and performing vacuum reaction sintering to obtain a ceramic biscuit; and processing the ceramic biscuit to obtain the metal ceramic for cable cutting. The technical problem to be solved is how to prepare the metal ceramic for cable cutting, so that the metal ceramic has better mechanical property and self-sharpening property, and the service life of a cutter is prolonged from 1 year to more than 3 years. The maintenance cost of key parts for cable cutting is greatly reduced, the service life of the parts is effectively prolonged, and the cable cutting device is particularly suitable for the application fields of helicopters, deep sea underwater vehicles, handheld cable cutters and other cable cutting equipment.

The invention relates to the field of ceramics for semiconductors, and discloses aluminum nitride ceramic tape casting slurry, a high-elongation aluminum nitride ceramic green tape and a preparation method and application thereof.The aluminum nitride ceramic tape casting slurry is prepared from, by mass, 70-75 parts of aluminum nitride raw powder and 25-30 parts of organic solvent through mixing and ball milling, the dispersing agent accounts for 0.5%-0.8% of the mass of the aluminum nitride raw powder, the binder accounts for 3%-10% of the mass of the aluminum nitride raw powder, the composite preparation accounts for 1%-9% of the mass of the aluminum nitride raw powder, and the composite preparation comprises dioctyl phthalate, dibutyl phthalate and dioctyl adipate according to the mass ratio of (2-4): (1-2): (1-2). By adopting the composite preparation with a specific ratio, the uniformity and flowability of the tape-casting slurry can be remarkably improved, the surface defects of a green belt are reduced, the elongation rate of the tape-casting slurry is up to 37%, the processing requirements of tubular curved surface structure aluminum nitride ceramic parts can be met, the cracking risk in the glue discharging and sintering process is reduced, and the service life of the tape-casting slurry is prolonged. The method can be widely applied to preparation of special-shaped ceramic elements for semiconductor equipment.

The invention provides a high-stability composite solid electrolyte and a preparation method thereof, and relates to a lithium ion battery technology. The invention provides a preparation method of a multilayer composite LLZO solid electrolyte, which comprises the following steps: respectively preparing an LLZO electrolyte layer and a LiAlO protective layer with high air stability and good lithium wettability by adopting a tape casting process, tightly compounding the LLZO electrolyte layer and the LiAlO protective layer by adopting a warm isostatic pressing process, and forming a compact multilayer structure after glue discharging and co-sintering. In the design, the LiAlO ceramic layer on the outer layer can effectively isolate erosion of water and carbon dioxide in the environment to LLZO, and the air stability of the material is remarkably improved; meanwhile, by utilizing the good wettability of LiAlO to lithium metal, the interface impedance between the solid electrolyte and the negative electrode can be greatly reduced, and the interface ion transmission efficiency is improved. The composite structure gives consideration to protectiveness and interface compatibility, and provides a new material and process thought for promoting the practical application of the high-safety and high-performance all-solid-state lithium battery.

The invention discloses an aluminum nitride ceramic substrate and a preparation method thereof, and belongs to the technical field of ceramic substrates, and the preparation method comprises the following steps: 1, mixing aluminum nitride powder, a sintering aid, a boron nitride dispersion liquid, a dispersant, a binder, a plasticizer and a solvent in parts by weight, and carrying out ball milling to obtain slurry; the boron nitride dispersion liquid comprises hydroxylated boron nitride nanosheets and hyperbranched polysilazane, the mass ratio of the hyperbranched polysilazane to the boron nitride is (0.8-1): 1, and the addition amount of the modified boron nitride is 0.8%-1.2% of the mass of the aluminum nitride powder; 2, carrying out tape casting and cold isostatic pressing on the slurry to obtain a blank; and the blank is subjected to glue discharging and sintering, and the aluminum nitride ceramic substrate is obtained. According to the preparation method, the boron nitride dispersion liquid composed of the hydroxylated boron nitride nanosheets and the hyperbranched polysilazane is added, and synchronous optimization of the tensile property and the heat-conducting property of the aluminum nitride ceramic substrate is achieved through the synergistic effect between the hydroxylated boron nitride nanosheets and the hyperbranched polysilazane.

The invention discloses a preparation method of a self-lubricating composite belt, and belongs to the technical field of transmission conveying belts and running belts. Weaving base cloth by adopting a herringbone weaving method, weaving middle-layer cloth by adopting a plain weaving method, and respectively drying and shaping the cloth; coating the back surface of the base cloth with an adhesive, and then forming a shaped shock absorption layer through a casting process or a calendering process; coating the front and back surfaces of the middle-layer cloth with an adhesive, then overlapping the middle-layer cloth with the base cloth with the shaping shock absorption layer, and performing high-temperature pressurization compounding to form a primary belt body; forming a surface wear-resistant layer on the surface of the primary belt body through a tape casting process or a calendering process, and performing embossing treatment to obtain a composite belt base body; the surface of the base cloth of the composite belt base body is coated with a self-lubricating material, a self-lubricating coating is formed through heating permeation and cooling solidification, and the self-lubricating composite belt is prepared. Through unique self-lubricating material combination and structural design, the ultra-low friction coefficient, lifelong refueling-free and self-cleaning functions of the product are achieved, the service life of the product is remarkably prolonged, and the energy-saving performance of the product is remarkably improved.

This invention provides a one-step casting method for preparing high-density fluorescent ceramics, comprising the following steps: S1, mixing powder raw materials, oxygen vacancy eliminators, sintering aids, solvents, and dispersants in proportion, and ball milling for a period of time to obtain slurry A; the powder raw materials are Ce-doped garnet-based fluorescent materials and / or nitride fluorescent materials; the oxygen vacancy eliminators include one or more of feldspar, kaolin, and zeolite; S2, adding binders, plasticizers, and homogenizers in proportion to slurry A, and continuing ball milling for a period of time to obtain slurry B; S3, filtering slurry B, degassing under vacuum to obtain casting slurry, and casting the casting slurry to obtain casting green body; S4, drying the casting green body, and performing debinding treatment under a certain atmosphere and temperature; finally, sintering at high temperature to obtain high-density fluorescent ceramics. This invention achieves a one-step preparation of high-optical-performance, high-density fluorescent ceramics.

The invention relates to a preparation method of an indium tin oxide target material, which comprises the following steps: (1) sequentially carrying out vacuum defoaming treatment, tape casting treatment and drying treatment on indium tin oxide liquid slurry to obtain an indium tin oxide tape casting sheet; (2) sequentially carrying out slitting treatment and cold isostatic pressing treatment on the indium tin oxide casting sheet to obtain a laminated indium tin oxide casting sheet; and (3) sequentially carrying out degreasing treatment and sintering treatment on the laminated indium tin oxide casting sheet to obtain the indium tin oxide target material. The invention provides the preparation method of the large-size indium tin oxide target material with low cost, and the preparation problem of the large-size integrated indium tin oxide target material is solved.

The invention discloses silicon nitride porous ceramic and a preparation method thereof. Si3N4 powder, Si powder, a metal fluoride sintering aid, a complex-phase pore-forming agent and absolute ethyl alcohol are subjected to ball milling, drying and granulation, and granulation powder is obtained; the complex-phase pore-forming agent comprises a low-temperature pore-forming agent and a medium-temperature pore-forming agent, the low-temperature pore-forming agent comprises one or two of dextrin, starch and cane sugar, and the medium-temperature pore-forming agent comprises phenolic resin or epoxy resin; the mass ratio of the Si3N4 powder to the multiphase pore forming agent is 100: (5-20), 100: (21-40), 100: (41-50) and 100: (51-70) respectively. The silicon nitride porous ceramic obtained by the process has the advantages of adjustable porosity, uniform pore size distribution, low thermal conductivity, excellent mechanical and electrical properties and the like, and the forming method is not limited to compression molding and is also suitable for various forming methods such as tape casting, grouting, 3D printing and the like, so that products with various sizes and shapes can be obtained.

The invention provides a method for improving the lamination binding property of water-based ceramic plain sheets, and relates to the technical field of ceramic materials. The method comprises the following steps: firstly, coating an interface binder on a non-smooth surface / smooth surface of the ceramic wafer and drying; and then laminating at least two ceramic wafers treated by the interface binder, and carrying out thermocompression bonding to obtain the laminated ceramic wafer. According to the method disclosed by the invention, the interlayer bonding strength is remarkably enhanced, the problems of sintering layering and warping of the laminated ceramic plain sheet caused by insufficient bonding force are effectively relieved, the technical bottleneck of poor wettability of the water-based tape casting slurry and the existing film belt is further overcome, and the plain sheet with smooth surface and uniform thickness can be stably prepared.

The invention provides low-warpage aluminum nitride ceramic which comprises a surface layer area and a core area, and the porosity of the surface layer area is 0-0.05%; the porosity of the core area is 0.1%-0.3%; the low-warpage aluminum nitride ceramic also comprises yttrium aluminum oxide; the volume fraction of the yttrium aluminum oxide in the surface layer area is 1.2-2.5 vol%; the volume fraction of the yttrium aluminum oxide in the core region is 3-8 vol%. The invention also discloses a preparation process of the ceramic, the tape casting process and the ion implantation process are carried out on ceramic slurry, and the tape casting process and the ion implantation process have a synergistic effect, so that the low-warpage aluminum nitride ceramic with pore and component double gradients and ion stress regulation is obtained, the warpage of the large-size (100 * 100 * 0.25-0.50) aluminum nitride ceramic is less than or equal to 50 microns after backflow and thermal circulation, and the warpage of the aluminum nitride ceramic is less than or equal to 50 microns. Meanwhile, the breaking strength can still reach 320 MPa or above after multiple times of cold and heat cycles.

The invention relates to the technical field of curtain coating film forming and profiling, and provides curtain coating film forming and profiling equipment for composite non-woven fabric and a profiling production technology.The curtain coating film forming and profiling equipment for the composite non-woven fabric comprises a sliding rail, a tension adjusting mechanism and a rapid temperature adjusting mechanism, and when an extrusion system slides, a molten material can be driven to move; the tension adjusting mechanism is arranged on the side, close to the pressing position of the molten material, of the extrusion system, the tension adjusting system can supply air to the molten material, and the rapid temperature adjusting mechanism is fixedly connected to the machine body frame and can adjust the temperature of the molten material to be adjusted. The extrusion system is arranged between the tension adjusting mechanism and the rapid temperature adjusting mechanism, the rapid temperature adjusting mechanism can make contact with the tape casting forming system, the surface temperature of the tape casting forming system is rapidly adjusted, and the technical problem that in the prior art, the thickness difference of concave-convex positions of lines on non-woven fabric is large during tape casting film forming pressing is solved.

The invention discloses a novel corona-resistant polyimide film and a preparation method, and relates to the technical field of polyimide films, and the film is prepared by carrying out film casting and high-temperature imidization on composite resin comprising the following components: polyamide acid resin obtained by polymerizing aromatic diamine and aromatic dianhydride, the molar ratio of the aromatic diamine to the aromatic dianhydride monomer is 1: (0.995-1.002). According to the novel corona-resistant polyimide film and the preparation method thereof, the corona-resistant polyimide film with excellent corona resistance and better mechanical property can be obtained through formula design innovation and film preparation process optimization, addition of a small amount of benzoxazine and reduction of the use amount of the corona-resistant filler; the method is simple in process, has low requirements on dispersion equipment, tape casting equipment and imine equipment, and is suitable for continuous industrial production. In addition, the method also has the advantage of lower cost, and compared with the traditional process, the method has the advantages that high-energy-consumption steps are reduced, and the production efficiency is improved.

The invention discloses dehumidification production equipment and a manufacturing method of an EVA (Ethylene Vinyl Acetate) adhesive film. The dehumidification production equipment comprises a plastic extruder, a raw material drying machine unit, a tape casting device and an automatic winding device, and the feeding end of the plastic extruder is communicated with the raw material drying machine unit through a raw material conveying pipeline; the discharge end of the plastic extruder is communicated with the tape casting device through a melt conveying pipe; the system further comprises an environment dehumidification unit, a central control system and an online moisture monitoring system; the environment dehumidification unit is arranged at the discharging end of the tape casting forming device, the automatic winding device is arranged in the environment dehumidification unit, the environment dehumidification unit comprises a sealing cover body and an environment dehumidifier, a dual dehumidification system of'raw material drying and environment dehumidification 'is constructed, and intelligent closed-loop regulation and control of an online moisture monitoring and central control system are combined; accurate moisture prevention and control in the whole EVA adhesive film production process are achieved, and the product quality and energy efficiency are effectively improved.

The utility model discloses a ceramic cast sheet laminating device, and belongs to the technical field of laminating devices. A ceramic cast sheet film covering device comprises a base and a supporting seat and further comprises an upper cover fixedly connected to the base, a feeding hole is formed in the upper cover, and a first supporting plate and a second supporting plate are fixedly connected to the supporting seat; the first supporting plate is rotationally connected with a first conveying roller, and the second supporting plate is rotationally connected with a plurality of second conveying rollers. A grinding roller and a feeding roller are rotationally connected into the upper cover, a sliding rail is fixedly connected to the base and the upper cover, a cutting block and a lifting block are slidably connected into the sliding rail, and a cutting blade is fixedly connected to the cutting block; when the grinding roller rotates to feed materials, the lifting block and the cutting block do reciprocating relative approaching or separating motion to cut the casting sheet; according to the utility model, flaky casting sheet main bodies with the same length can be cut, so that the laminating sheet and the casting sheet main bodies can be attached more tightly, and meanwhile, the generation of bubbles can be reduced.