1768 results about "Ceramic particle" patented technology

The invention discloses slurry, a battery diaphragm, a preparation method of the battery diaphragm and a battery, and belongs to the technical field of batteries. The slurry comprises the following components: ceramic particles, carbon nanofibers, a binder I and a solvent I, the ceramic particles comprise ceramic particles I and ceramic particles II; the particle size of the ceramic particles I is 0.55-1 [mu] m, and the particle size of the ceramic particles II is 0.05-0.45 [mu] m. The battery diaphragm comprises a base membrane and a composite coating, the composite coating is attached to at least one surface of the base film; the composite coating is formed by curing the slurry provided by the invention. The battery diaphragm provided by the invention has good thermal stability and mechanical strength, the passing rate of the lithium ion battery in coping with safety tests such as extrusion, puncture and heavy object impact is greatly improved, and meanwhile, the electrochemical performance of the lithium ion battery is also improved.

The invention discloses a preparation method of a ceramic membrane with efficient separation and catalysis functions as well as a product prepared by the preparation method and application of the ceramic membrane. The preparation method comprises the following steps: preparing a ceramic membrane support body by taking large-particle-size ceramic particles as a raw material, and preparing a transition layer by taking transition metal oxide nanofibers as a raw material by adopting a dip coating method; small-particle-size ceramic particles are used as raw materials to prepare a separation membrane layer by adopting a dip-coating method, and the ceramic membrane with a sandwich structure is formed through one-step co-firing. The transition layer with high porosity and specific surface area is formed by adopting the transition metal oxide nanofibers, so that the number of catalytic active sites and the permeation flux are improved; small-particle-size ceramic particles are adopted to form a separation membrane layer with uniform pore size distribution and a flat membrane surface, so that the separation efficiency of particulate matters and organic matters in water is improved, the accumulation of the particulate matters and the organic matters on the membrane surface is reduced, and meanwhile, the particulate matters and the organic matters in water are prevented from covering active sites of the catalytic ceramic membrane; therefore, the separation efficiency and the catalytic degradation efficiency of the ceramic membrane are synchronously improved.

The invention discloses a preparation method of a ceramic particle reinforced high-temperature alloy wear-resistant coating of a boiler water-cooled tube. The preparation method comprises the following steps: carrying out roughening treatment on a matrix; the prepared NiCr powder and ZrB2 powder are subjected to high-energy ball milling and mixing, drying is conducted after treatment, and dried NiCr-based composite powder is obtained; niCr-based composite powder is sprayed through atmospheric plasma, and a composite coating with the thickness ranging from 200 micrometers to 300 micrometers is deposited on the roughened surface of the base body; the composite coating is subjected to remelting treatment, and a remelting coating is formed on the surface of the base body; wherein the matrix is 304 stainless steel, and the composition proportions of the NiCr powder and the ZrB2 powder are as follows: 80-99 wt% of NiCr and 1-20 wt% of ZrB2 respectively; by means of the method, the wear resistance of the coating is remarkably improved, and controllable deposition of the high-performance ceramic particle reinforced high-temperature alloy wear-resistant coating is achieved.

The invention discloses a lithium battery diaphragm with a self-repairing function and a preparation method thereof, and belongs to the field of lithium battery diaphragms. The lithium battery diaphragm comprises a polymer base membrane and a ceramic coating, the ceramic coating is coated on one side surface, facing the negative electrode, of the polymer base membrane or two side surfaces of the polymer base membrane; the ceramic coating comprises the following raw materials in parts by mass: 40-50 parts of modified ceramic particles, 4-8 parts of self-repairing microcapsules, 0.5-3 parts of a dispersing agent and 50-60 parts of water; the surfaces of the modified ceramic particles are grafted with amino-phenylboronic acid difunctional silane; chitosan / polyurethane is used as a wall material of the self-repairing microcapsule, and polyisocyanate is used as a core material of the self-repairing microcapsule. When the lithium ion diaphragm is stressed or punctured by dendritic crystals, the polyisocyanate can be released to react and crosslink, the generated cracks are closed, and an ion channel is reconstructed. Through the physical barrier of the ceramic coating and the self-repairing effect of the self-repairing microcapsule, the mechanical strength and the ion transmission performance of the lithium battery diaphragm can be effectively maintained.

The invention relates to the technical field of wear-resistant composite materials, and particularly provides a modification method of ceramic particles, a ceramic-reinforced high-chromium iron-based composite material and a preparation method of the ceramic-reinforced high-chromium iron-based composite material, and the modification method comprises the following steps: carrying out decontamination, hydrofluoric acid coarsening, divalent tin sensitization, metal palladium activation, chemical Ni plating, ceramic micro powder coating and other treatments on SiC or ZTA and other ceramic particles; therefore, metallization modification can be rapidly achieved on the surfaces of the ceramic particles, decomposition of the ceramic particles is prevented, the connection strength between the ceramic particles and the metal-based material is effectively improved, and the ceramic reinforced high-chromium iron-based composite material with high hardness and high abrasion resistance is prepared. And technical support is provided for developing wear-resistant parts of mechanical equipment under harsh working conditions of metallurgy, mines, coal, building materials and the like.

The invention discloses a wire feeding type aluminum alloy laser cladding method based on pre-paved reinforced particles, which comprises the following steps: placing a rectangular mold on the surface of an aluminum alloy matrix, adding TiC particle powder, and scraping redundant powder by using a scraper; according to the method, the characteristic that the TIC powder is high in laser absorptivity is utilized, the TIC powder is flatly laid on the aluminum alloy matrix to reduce the laser reflectivity of the aluminum alloy, the consistency and stability of the coating in the cladding process are guaranteed through push-pull wire feeding, bubbles are reduced, and the laser cladding efficiency is improved. Good toughness and machinability of an aluminum alloy matrix are organically combined with high hardness and high wear resistance of a ceramic reinforced phase, meanwhile, an oxidation film on the surface of the aluminum alloy is broken by using swinging laser, the cladding coating is high in performance, ceramic particles are uniformly distributed, the processing method is simple and easy to implement, the high-performance aluminum alloy cladding coating is prepared, and the service life of the aluminum alloy cladding coating is prolonged. And the aluminum alloy surface wear resistance is obviously improved.

The invention discloses a composite regulation and control method for improving the performance of a laser additive manufacturing high-strength aluminum alloy, and relates to the technical field of laser additive manufacturing high-strength aluminum alloy materials, micron-sized ceramic particles and micron-sized AlMgScZr alloy powder are mixed, and ceramic particle reinforced aluminum-based composite powder is prepared. According to the composite material powder, the solidification structure is regulated and controlled through the characteristics of ceramic particles, stress concentration is reduced, and meanwhile the reinforcing phase particle aggregation phenomenon is avoided. The obtained composite material is excellent in quality and few in metallurgical defects in laser forming, and the density reaches up to 99.8% or above. By combining the optimized selective laser melting and heat treatment process, the room-temperature mechanical property of the prepared composite material part is remarkably improved, the tensile strength exceeds 540 MPa, the yield strength exceeds 490 MPa, and the elongation at break exceeds 10%.

A method of forming a ceramic matrix composite component includes forming a fiber preform, the fiber preform including a plurality of ceramic fiber plies, a non-reduced fiber region having an areal weight, and a reduced fiber region characterized by a reduced areal weight less than the areal weight of the non-reduced fiber region by at least 5 percent. The method further includes selectively applying ceramic particles to the reduced fiber region in such manner as to avoid applying the ceramic particles to the non-reduced fiber region, and subsequently densifying the preform.

The invention discloses a hydroxylation modified ceramic particle, a photocuring ceramic slurry and a preparation method thereof.The preparation method of the hydroxylation modified ceramic particle comprises the following steps that after ceramic powder is flatly laid, plasma working gas is introduced into the ceramic powder, a plasma power source is started to generate plasma, the ceramic powder is treated for set time, and the photocuring ceramic slurry is obtained; and uniformly spreading the ceramic powder again, and continuously treating for a set time to obtain the hydroxylation modified ceramic particles. The method for modifying the ceramic particles based on DBD plasma hydroxylation is simple in process, low in cost and easy to regulate and control, the hydroxylation degree of the ceramic particles can be achieved only by adjusting discharge voltage, frequency, treatment time and ventilation flow, no solvent is involved in the hydroxylation modification process of the ceramic particles, almost no waste is generated, and the method is suitable for industrial production. And original ceramic particles are not polluted.

The invention discloses a method for manufacturing a functionally graded composite material through wire powder composite arc additive manufacturing, which comprises the following steps: firstly, carrying out surface treatment on a base material, enabling the surface of titanium alloy to expose fresh white bright metal luster by adopting a machining mode, and removing surface oil stains by using alcohol and acetone; according to the requirement of materials for the gas atmosphere in the additive manufacturing process, the flexible inert gas cabin is filled with appropriate gas, and the gas atmosphere is kept all the time in the additive manufacturing process. On the basis of the electric arc additive manufacturing technology, electric arc additive manufacturing of the functional gradient metal-based composite material is achieved through a wire powder composite device, and the key technology is that according to different position requirements of parts, the metal-based composite materials with different ceramic particle contents are manufactured in an additive mode; a gradient transition area is manufactured between two areas with large particle content difference, and large stress generated at an interface due to component mutation is reduced.

The invention belongs to the technical field of brake discs, and relates to a cast iron brake disc ceramic reinforced iron-based wear-resistant coating and a preparation method thereof.The cast iron brake disc ceramic reinforced iron-based wear-resistant coating comprises a brake disc base body, an iron-based transition coating and a composite wear-resistant coating, the composite wear-resistant coating is formed by mixing iron-based alloy powder, B4C ceramic particles and CeO2 rare earth powder; the preparation method comprises the following steps: 1, carrying out laser cladding on iron-based alloy powder on a brake disc substrate to prepare an iron-based transition coating; 2, carrying out ball milling and mixing according to a weight ratio to prepare composite wear-resistant mixed powder; 3, performing laser cladding on the iron-based transition coating with composite wear-resistant mixed powder; the B4C + CeO2 ceramic particles are mixed into the iron-based alloy powder, so that microcracks of the brake disc coating are reduced, the wear resistance and hardness are improved, dust pollution is reduced, the service life is prolonged, and the friction performance better meets the brake disc strengthening requirement.

The invention provides a lithium ion battery diaphragm, which comprises a base membrane and a functional coating coated on at least one surface of the base membrane, the functional coating comprises a first material and a second material uniformly distributed between the first material, the first material comprises ceramic particles and a binder coated on the surfaces of the ceramic particles, and the second material comprises a second material uniformly distributed between the first material and the second material. The second material is high-temperature-resistant fiber, and the first material and the second material are bonded to form a three-dimensional network structure. Compared with the prior art, the functional coating has good mechanical strength and thermal stability, the functional coating is of a three-dimensional network structure, reaction sites are provided for battery charging and discharging, the network structure has good thermal conductivity, the thermal stability of the battery diaphragm is effectively improved through cooperation of the ceramic material and the high-temperature-resistant fibers in the coating, and the service life of the battery diaphragm is prolonged. And the functional coating coated on the base membrane has good adhesion, so that materials on the coating are firmly adhered on the base membrane without powder falling, and the heat resistance of the diaphragm is further improved.

The invention discloses a TiB2 / TiC reinforced high-silicon heat-resistant aluminum-based composite material and a preparation method thereof, and belongs to the technical field of metal-based composite materials. Aluminum powder, titanium powder and metal oxide powder are mixed and then centrifugally sprayed to be prepared into small balls; mixing the small balls with aluminum powder, boron oxide powder and carbon powder, and pressing into a prefabricated body; smelting the intermediate alloy A, adding the preform and a covering agent for heat preservation, cooling, adding the intermediate alloy B, and stirring to obtain a mixed melt; and degassing and removing impurities from the mixed melt, refining and slagging, and then pouring to obtain the TiB2 / TiC reinforced high-silicon heat-resistant aluminum-based composite material. According to the preparation method, the TiB2 / TiC reinforced phase is generated in situ in the aluminum substrate through two-stage reaction, the reinforced micro-nano TiC and TiB2 ceramic particles are high in bonding capacity with a metal-based interface, a transition interface is free of impurities, and the mechanical property of the material is greatly improved. And the ceramic particles produced by the preparation method have the advantages of good dispersion degree in the matrix, less agglomeration, faster reaction process, fast particle generation speed and no generation of harmful gas.

An internal electrode layer includes therein a plurality of inner ceramic particles within an observation range of a cross-section intersecting the internal electrode layer. The position of the inner ceramic particles in the internal electrode layer relative to the center position of the internal electrode layer in the thickness direction is correlated with the position from the center position to the edge position, and the corresponding positions are indicated by the numbers 0-100. Such an index is referred to as Dsp. Inside the internal electrode layer, within a region of Dsp of 40 or less, preferably 30 or less, the inner ceramic particles are present in an area of at least 50% of the total area of the inner ceramic particles present within the observation range.

The invention provides a coated diaphragm for a lithium ion battery, a preparation method of the coated diaphragm and the lithium ion battery. The coated diaphragm is composed of a porous polyolefin middle layer, and a first skin layer and a second skin layer which are positioned on two sides of the porous polyolefin middle layer, the first skin layer is composed of nanofibers and nano ceramic particles; the second skin layer is composed of an intrinsic microporous polymer (PIM) and / or a modified intrinsic microporous polymer; the first skin layer and the second skin layer are respectively arranged on the upper surface and the lower surface of the porous polyolefin middle layer to form a sandwich structure, the diffusion coefficient of the obtained coated diaphragm to nickel ions is 3.21 * 10 <-9 >-4.65 * 10 <-9 > cm < 2 > / s, and the diffusion coefficient of the obtained coated diaphragm to manganese ions is 5.75 * 10 <-10 >-6.88 * 10 <-10 > cm < 2 > / s; the mechanical property and the heat resistance of the diaphragm are improved, meanwhile, the permeability of the diaphragm to nickel and manganese ions is greatly reduced, the situation that metal ions such as nickel and manganese in an existing lithium ion battery positive electrode material are dissolved out to pollute a negative electrode of a battery during operation of the battery is effectively avoided, and the service life of the battery can be effectively prolonged.

A method of manufacturing ceramic matrix composites includes producing chemical vapor deposition functionalized ceramic particles before injecting the functionalized ceramic particles into the CMC fabric. The functionalized ceramic particles are mixed with a binder solution and then dispensed into voids present between adjacent tows of the CMC fabric. Injecting the particles in the center of the voids reduces the size and volume fraction of the voids / defects, improving the homogeneity of surface texture, homogeneity of microstructure, and part model shape conformity.

The invention discloses a porous ceramic filter for liquid magnesium alloy purification and a preparation method thereof, and the porous ceramic filter comprises the following raw materials in percentage by mass: 70-85wt% of ceramic particles, 8-15wt% of multi-element oxide system microcrystalline glass brazing filler metal and the balance of a binder, al2O3-B2O3-SiO2-MgO-CaO multi-element oxide system microcrystalline glass brazing filler metal is adopted, under the condition of air atmosphere high-temperature calcination, a compact reaction layer containing a low-melting-point glass phase, an aluminum oxide phase, a magnesium aluminate spinel phase, a calcium aluminosilicate phase, a borate phase and a silicate phase is generated on the surfaces of ceramic particles of a porous ceramic filter through a chemical reaction; the magnesium alloy filter has high strength and good high-temperature stability, and the problems that the filter loses efficacy and magnesium alloy melt is polluted due to the fact that the filter is eroded by magnesium alloy liquid are effectively solved.

The present exemplary embodiments relate to a lithium metal electrode, a method of manufacturing the same, and a lithium secondary battery including the same. According to an exemplary embodiment, a lithium metal electrode including: a current collector and a metal layer which is disposed on at least one surface of the current collector and includes a lithium component, in which a protective layer including amorphous carbon and lithium-ion conduction promoting ceramic particles is formed on a surface of the metal layer, may be provided.

The invention provides a preparation method of anisotropic ceramic aerogel based on ceramic particles. The preparation method comprises the following steps: firstly, adding ceramic particles and a binder into a water solvent according to a ratio, and uniformly stirring to prepare ceramic aerogel slurry; and secondly, filling the slurry into a mold or an extrusion needle tube of a direct-writing 3D printing technology, and preparing or printing anisotropic structure aerogel in any shape on a cooled copper plate according to a pre-designed structure by adopting an in-situ freezing technology as an assistance. After freeze drying and sintering, the ceramic aerogel with the directional hole structure on the microscopic scale is finally obtained. The anisotropic ceramic aerogel has excellent mechanical properties, has an ultrahigh anisotropic coefficient up to 24, and has high rigidity and high compressibility in two orthogonal directions respectively. The ceramic aerogel also has the functions of heat insulation, noise reduction, adsorption, vibration reduction and the like. The method for preparing the anisotropic ceramic aerogel through the in-situ freezing auxiliary mold forming or 3D printing technology is low in cost, easy to operate and wide in application range and has great application potential.

An electrode structure for a solid-state or semi-solid-state battery is provided in which NCM electrode particles coated with an interphase layer and a nitrogen-containing carbon layer are disposed. [Solution] The NCM electrode particles comprise NCM (nickel-cobalt-manganese oxide) particles (15), primary particles (30) that coat the outer surfaces of the NCM particles, an interphase layer (16) that includes a glass phase layer (241) and a plurality of ceramic particles (242), and a nitrogen-containing carbon layer (35) that coats the exterior of the primary particles. Nitrogen-doped carbon molecules in the nitrogen-containing carbon layer aid in the conduction of electrons and lithium ions, modifying the electrical potential of the NCM particles. The nitrogen-containing carbon layer is formed by coating the surfaces of the primary particles with a nitrogen-containing polymer material and calcining the material in an inert atmosphere. Conjugated bonds are formed between the carbon and nitrogen, modifying the energy band structure, reducing the energy required for electrons to transition to the conduction band, and improving overall electronic conductivity.

The invention relates to the technical field of spray drying equipment, and discloses centrifugal spray drying equipment and a ceramic spray granulation drying method.The centrifugal spray drying equipment comprises a device body, an electric cabinet, an air heater and a spray drying bin, the spray drying bin is installed in the device body, and the electric cabinet and the air heater are fixedly installed at the top of the device body; a heating mechanism and an upwind mechanism are installed in the spray drying bin, and a discharging pipe is fixedly connected to the bottom of the spray drying bin. In the slurry particle heating and drying process, the interior of the spray drying bin can be heated at different temperatures in a sectional mode through the multiple air opening connecting rings, and in the slurry particle descending process, the ascending mechanism can adjust the descending speed and position of slurry particles; by means of sectional type heating, the heating time and heating uniformity of slurry particles are guaranteed, the problem that ceramic particles are broken due to the fact that the heating temperature is too high and heating is not uniform can be effectively solved, and therefore the production quality of the ceramic particles is remarkably improved.

According to the lithium ion battery diaphragm slurry, the diaphragm and the lithium ion battery disclosed by the invention, a furyl polyamide solution and ceramic powder are mixed to obtain a cortex solution, and furyl polymers have relatively high mechanical properties, so that the mechanical properties of the diaphragm prepared by subsequent coating can be improved. The hollow furyl polyamide nanofiber is prepared from the skin layer solution and the core layer solution, the ceramic particles are added in the process of preparing the hollow fiber instead of mixing the prepared hollow fiber with the ceramic particles, the ceramic particles can be dispersed on the surface and inside the hollow fiber, agglomeration of the ceramic particles is avoided, and the hollow fiber is prepared. The preparation method has the advantages that the dispersion degree of furyl molecular chains is increased, the dispersion degree of the slurry is high, and meanwhile, the surface area of the slurry in contact with the diaphragm during subsequent coating can be increased due to generation of hollow fibers, so that the wettability of the diaphragm to electrolyte is effectively improved, and the heat resistance of the diaphragm is higher and the thermal shrinkage rate is lower.

A method of manufacturing a composite panel is provided. The method includes applying a composite face sheet to a first side of a core structure, the core structure comprising a plurality of first ceramic particles each having a first particle size that is within a first particle size range and the composite face sheet comprising a plurality of second ceramic particles each having a second particle size that is within a second particle size range, wherein the second particle size range is smaller than the first particle size range and densifying the composite panel through infiltration, wherein the infiltration comprises transport of an infiltrant through the core structure and into the composite face sheet.

The invention discloses a regulation and control method and a preparation method of in-situ ceramic particles of a copper-based composite material. The method comprises the following steps: weighing according to a reaction equation and a reaction molar ratio; the molar ratio coefficient is changed, trace alloy is added, and the size and morphology of in-situ particles are regulated and controlled; the copper-based pre-dispersed in-situ ceramic intermediate alloy reinforcer is prepared through powder mixing, cold pressing and sintering; crushing the reinforcer, remelting, stirring and casting; and after the cast alloy is subjected to heat treatment, the high-performance in-situ particle reinforced copper-based composite material is prepared. According to the obtained in-situ ceramic intermediate alloy reinforcer, pre-dispersion of ceramic particles in a copper matrix can be achieved, and good combination of the particles and the matrix is achieved by adding the copper-based pre-dispersion in-situ ceramic intermediate alloy reinforcer into a molten matrix alloy; interface pores caused by sharp corners, surface pollution and the like of the heterogeneous particles in an external addition method are avoided, and the strengthening effect of the heterogeneous particles is weakened.

Materials such as ion exchange materials for capturing substances, and associated methods and systems, are generally described. In some instances, adsorbent materials that can capture undesirable species from fluid mixtures such as waste streams are provided. The adsorbent material may include ceramic particles (e.g., as a resin) functionalized for effectively and / or selectively capturing species such as per- and poly-fluoroalkyl substances (PFAS) and / or metal or metalloid-containing ions (including heavy metals). Systems and methods for further treating species captured by the adsorbent material are also provided. For example, some embodiments are directed to mechanochemical treatment of captured species associated with the adsorbent material. Subjecting captured species such as PFAS to mechanochemical transformations can destroy potentially harmful contaminants in a relatively inexpensive and distributable manner.

The invention relates to the field of lithium battery diaphragms, and particularly discloses an aramid diaphragm for a lithium battery and a preparation method of the aramid diaphragm. The aramid diaphragm for the lithium battery comprises aramid slurry and a base membrane, the aramid slurry is coated on two sides of the base membrane to form an aramid coating, and the aramid slurry is prepared from the following raw materials in parts by weight: 20-40 parts of aramid polymer liquid, 5-10 parts of tencel fibrillation slurry, 1-3 parts of titanium aluminum lithium phosphate nanoparticles, 3-5 parts of nano ceramic particles and 8-15 parts of solvent; the aramid polymer liquid is prepared from the following raw materials in parts by weight: 1 to 3 parts of p-phenylenediamine, 60 to 80 parts of polar solvent, 5 to 10 parts of paraphthaloyl chloride, 1 to 3 parts of 3, 4 '-diaminodiphenyl ether, 1 to 3 parts of o-chloro-p-phenylenediamine and 0.5 to 1 part of polyether surfactant; the aramid polymer liquid is combined with the nano ceramic particles and the tencel fibrillation slurry component to form an intercommunicated porous three-dimensional network structure, so that the air permeability, the thermal stability and the porosity of the aramid diaphragm are improved.

The invention provides a capillary crystalline waterproof agent, a preparation method and application, and the capillary crystalline waterproof agent comprises the following raw materials in parts by weight: 80-100 parts of a non-cement-based cementing material, 15-25 parts of an alkali activator, 1.5-2.5 parts of a thickener, 12.5-22.5 parts of a flexibilizer, 0.1-0.3 part of a dispersant and 5-10 parts of a water reducer, the flexibilizer is formed by mixing carboxyl-terminated liquid rubber modified epoxy resin and inorganic ceramic particles according to the mass ratio of 7: (3-5), and the dispersing agent is alkylphenol polyoxyethylene ether. Under the action of the dispersing agent, the toughening agent can be uniformly dispersed in the concrete, so that the overall toughness of the concrete is improved. The improvement of the overall toughness not only can bear deformation or shrinkage cracking of the concrete caused by evaporation of moisture, temperature difference and external stress, but also can better resist cracking from the source, reduce cracks and pores, prevent moisture from permeating and improve the impermeability of the concrete; and the bending resistance of the concrete after complete water permeability and self-healing can also be improved.

The invention belongs to the field of hydrogen production by alkaline electrolyzed water, and particularly relates to a double-functional-group alkaline electrolyzed water composite diaphragm as well as a preparation method and application thereof. The preparation method of the double-functional-group alkaline electrolyzed water composite diaphragm comprises the following steps: S1, mixing nano ceramic particles with a modification liquid, and performing a modification reaction to obtain amino and sulfydryl double-functional-group modified nano ceramic particles, wherein the modification liquid contains an amino silane coupling agent and a sulfydryl silane coupling agent; the polymer supporting layer is placed in sulfonation liquid to be subjected to sulfonation modification reaction, and then a sulfonated polymer supporting layer is obtained; and S3, mixing the bifunctional group modified nano ceramic particles, a polymer, a pore forming agent and a first organic solvent to obtain a membrane casting solution, degassing the membrane casting solution, coating a sulfonated polymer supporting layer with the membrane casting solution to form a membrane, and performing phase inversion in a coagulating bath to obtain the bifunctional group alkaline electrolyzed water composite membrane. The double-functional-group alkaline electrolyzed water composite diaphragm provided by the invention is good in mechanical property, stable in performance, low in surface resistance and good in air tightness.

The invention relates to the technical field of fired ceramsite, and particularly discloses high-strength ceramsite prepared from coal gangue as well as a preparation method and application of the high-strength ceramsite. The invention discloses a preparation method for preparing ceramic particles from coal gangue. The preparation method comprises the following steps: drying; performing pyrolysis; decarburization: carrying out heating combustion-supporting on a material layer from top to bottom by hot air with the temperature of 450-600 DEG C from the pyrolysis section and the cooling section in the decarburization section, and completing decarburization of the ceramsite from top to bottom; hot air from the cooling section is subjected to heat compensation and temperature rise to heat ceramsite, the temperature of a ceramsite material layer is 1000-1140 DEG C, and the ceramsite material layer is subjected to heating combustion supporting from top to bottom; and cooling: cooling the roasted ceramsite to 80-100 DEG C. By means of the technical scheme, the treatment scale of the coal gangue ceramsite can be increased, the production cost is effectively reduced, and the ceramsite meets the requirements for decarburization, low water absorption and high strength.

The invention relates, inter alia, to a dispersion electrolyte for the electroplating of particle-containing tin alloy layers. The dispersion electrolyte comprises 2 to 100 g / L tin ions; 1 to 100 g / L ions of a second alloying element selected from copper, silver, bismuth, nickel, cobalt, cadmium, zinc, manganese, and combinations thereof; 1 to 200 g / L at least one type of particle selected from inorganic piezoelectric particles, electrically conductive ceramic particles, and combinations thereof; at least one dispersant selected from anionic dispersants, nonionic dispersants, and combinations thereof; and water. The pH value is 7 or lower. The dispersion electrolyte can be used to electroplaten a particle-containing tin alloy layer onto a metallic or metallized substrate.