1452 results about "Ceramic composite" patented technology

The invention discloses a high-strength short fiber carbon ceramic brake disc and a preparation method thereof, and the preparation method comprises the following steps: carrying out ball milling on silicon powder and carbon powder, mixing with thermosetting resin powder and thermoplastic resin powder, uniformly mixing carbon fiber and a coupling agent, adding the mixed powder, and uniformly mixing again. According to the short fiber carbon ceramic brake disc provided by the invention, the ball-milled silicon powder and carbon powder are uniformly dispersed in the matrix, meanwhile, the thermoplastic resin with good fluidity is added to form a network structure in the matrix, through holes are formed after carbonization, and the high-strength short fiber carbon ceramic brake disc is obtained. Silicon steam can enter in the ceramization process, and the problem that the carbon-ceramic composite material which is high in fiber content and large in thickness and formed at high temperature and high pressure is difficult to infiltrate can be effectively solved. The carbon-ceramic short fiber brake disc prepared by the method is low in aperture ratio and high in impact strength.

The invention provides an additive manufacturing method of a short fiber reinforced ceramic composite aircraft engine swirler, which comprises the following manufacturing steps: performing interface preparation on the fiber surface to obtain composite powder, and mixing the powder with silicon carbide powder and resin to obtain mixed powder; carrying out selective laser sintering printing molding on the mixed powder to obtain a ceramic green body, and carrying out degreasing treatment to obtain an intermediate; performing two-step impregnation and cracking on the intermediate through a ceramic precursor and resin to obtain a preform 2, performing gas / liquid phase reaction sintering treatment on the preform 2 to obtain Cf / SiC ceramic, depositing silicon carbide on Cf / SiC through a chemical vapor infiltration method, and performing abrasive flow grinding and polishing to obtain a finished product. The short fiber reinforced silicon carbide powder precise printing forming swirler is achieved, fiber, silicon carbide and resin powder are subjected to composite granulation, fiber agglomeration is weakened, the powder density is increased, the cohesive force between carbon fibers is increased, and therefore the biscuit density is increased; and structure accurate forming and surface quality control of the swirler with the complex structure are facilitated.

The invention relates to the technical field of ceramic materials, in particular to a ceramic composite material and a preparation method thereof.The ceramic composite material is prepared from, by weight, 30-35 parts of silicon carbide, 15-20 parts of boron nitride, 10-15 parts of silicon dioxide, 8-11 parts of additive based on modified filler and 7-10 parts of ball milling agent based on sodium alginate reconditioning modification. According to the ceramic composite material, silicon carbide and boron nitride are matched with silicon dioxide, the additive based on the modified filler and the ball-milling agent based on sodium alginate reconditioning modification are blended and coordinated, and through coordination and synergism of the raw materials, the obtained product can achieve coordinated improvement of strength, wear resistance and thermal conductivity; and the product has remarkable heat-resistant and corrosion-resistant stability effects.

The invention belongs to the technical field of ceramics and slurry thereof, and particularly relates to fiber-reinforced ceramic photocuring slurry, a preparation method and a reinforced ceramic material. The slurry provided by the invention consists of ceramic powder, ceramic composite short fibers, light-cured resin, a photoinitiator, a dispersing agent, a plasticizer and the like, wherein the ceramic composite short fibers are zirconium oxide and silicon oxide composite fibers; the light-cured resin contains a photosensitive resin monomer and a prepolymer; and the photoinitiator is compounded by a short-wavelength initiator and a long-wavelength initiator. The preparation method comprises the following steps: modifying the ceramic composite short fibers with a silane coupling agent, mixing the modified ceramic composite short fibers with all the materials, and carrying out ball milling and defoaming. The obtained slurry is subjected to 3D printing photocuring molding and degreasing sintering, and a reinforced ceramic material can be prepared. The slurry can be used for manufacturing a high-performance ceramic material through composite short fiber synergistic enhancement, long and short wavelength initiator synergistic curing and fiber surface modification, and the curing depth, the three-point bending strength and the fracture toughness are remarkably improved.

The invention provides a large-scale preparation data analysis method of an alloy and ceramic composite material, and belongs to the technical field of data analysis. Determining correlation coefficients of the index characteristics of different stages and different dimensions and correlation stages of the index characteristics of different dimensions according to the deviation conditions of the index data of the index characteristics of different preparation batches and the optimal preparation batch and the deviation conditions of the control parameters of different stages; obtaining deviation conditions of control parameters of different preparation batches in different association stages, and determining the control difficulty of the index characteristics of different dimensions according to the deviation conditions of the control parameters and the association coefficients; whether the current preparation scheme needs to be adjusted or not is determined on the basis of the control difficulty of the index characteristics of different dimensions and the deviation condition of the index data of the index characteristics between different production batches, and the preparation processing efficiency and reliability are guaranteed.

The invention discloses a carbon ceramic composite conductive microsphere, a ceramic resistor and a preparation method, and belongs to the technical field of production of special materials of electrical equipment, and the method comprises the following steps: sequentially dipping porous mullite in a precursor solution of carbon and slurry containing carbon black, and carrying out drying treatment and carbon burying sintering to obtain the carbon ceramic composite conductive microsphere; the preparation method comprises the following steps: preparing a ceramic raw material, performing vacuum-assisted centrifugal impregnation on the ceramic raw material and slurry consisting of a binder in pug consisting of the ceramic raw material and a surfactant, sequentially performing drying and glue discharging treatment, primary isostatic pressing forming and air pressure sintering, cooling to room temperature, and performing mechanical treatment and electrode spraying to obtain the ceramic resistor. Impregnation improves the dispersibility and uniformity of the carbon material in the porous mullite to form a continuous conductive path, the carbon black-containing slurry improves the conductivity of the ceramic resistor, carbon-buried sintering generates in-situ carbon with abundant types, the combination of carbon and a ceramic interface is promoted, and the oxidation resistance, mechanical properties and electrical properties of the ceramic resistor are improved.

The invention relates to the technical field of defect detection, in particular to a semiconductor ceramic composite material surface defect detection method based on image processing. Obtaining a local gradient size difference value and a local gradient direction difference value according to gradient difference features of adjacent edge pixel points in the target edge; obtaining an edge smoothing characteristic value according to the distribution characteristics of the local gradient size difference value and the local gradient direction difference value; obtaining a smoothness difference degree according to the edge smoothness feature values of any two target edges; obtaining a defect probability value according to the smooth difference degree and judging whether a defect exists or not; and clustering the target edge according to the smooth difference degree, and selecting a defect edge cluster according to the edge smooth feature value. The method comprises the following steps: obtaining a seed point and a defect region of a watershed segmentation algorithm according to gray difference characteristics of regions on two sides of a defect edge in a defect edge cluster; the defect degree is obtained according to the area characteristics of the defect region, and the accuracy of seed point selection and defect detection is improved.

The invention discloses a carbon ceramic composite friction material and a preparation method thereof. The carbon ceramic composite friction material is prepared from the following raw materials in parts by weight: 5-10 parts of short carbon fibers, 15-25 parts of ceramic fibers, 15-25 parts of calcium sulfate whiskers, 10-15 parts of microporous filler, 3-5 parts of a friction increasing regulator, 3-5 parts of a friction reducing regulator, 0.2-0.5 part of superfine silicon carbide, 0.05-0.1 part of a dispersing agent, 3-6 parts of polysilazane and 3-5 parts of high-temperature-resistant phenolic resin. And 0.5-1 part of polytetrafluoroethylene powder. Polysilazane is adopted to treat short carbon fibers, so that the carbon fibers form a good ceramic high-temperature-resistant layer, and high-temperature oxidation of the carbon fibers in the carbon-ceramic composite friction material is effectively prevented; the use amount of phenolic resin is reduced, and the high-temperature stability of the carbon-ceramic composite friction material is improved. Through cooperation of the friction-increasing modifier, the friction-reducing modifier, the calcium sulfate whiskers, the microporous filler and the polytetrafluoroethylene, the friction coefficient is kept stable at high temperature during braking, and abrasion caused during high-load braking is reduced. Long-time high-temperature sintering is not needed in the production process, and energy-saving and environment-friendly preparation of the carbon-ceramic friction material is achieved.

To provide a method for manufacturing a ceramic susceptor, capable of improving bonding force between the upper and lower plates of a MMC (a Metal Matric Composite) metal ceramic composite base body, and the ceramic susceptor.SOLUTION: A ceramic susceptor base body includes a body obtained by bonding lower and upper plates 210 and 220 consisting of a metal ceramic composite, respectively. A method for manufacturing the aceramic susceptor base body comprises steps of: successively laminating a first active metal layer 321, a first aluminum layer 322 and a blazing filler layer 323 on the bonded surface of the upper plate; successively laminating a second active metal layer 311 and a second aluminum layer 312 on the bonded surface of the lower plate; and brazing and bonding the lower and upper plates by the brazing filler layer.SELECTED DRAWING: Figure 2C

The invention discloses a polytetrafluoroethylene ceramic membrane and a preparation method and application thereof, and the preparation method comprises the following steps: (1) adding polytetrafluoroethylene and a binder into water, and carrying out first mixing to obtain polytetrafluoroethylene slurry; adding a carbon nanotube and a dispersing agent into water, and carrying out secondary mixing, so as to obtain a carbon nanotube dispersion liquid; (2) carrying out third mixing on the carbon nanotube dispersion liquid and the polytetrafluoroethylene slurry to obtain a membrane preparation liquid; and (3) coating the surface of a ceramic support with the membrane preparation liquid, drying, and carrying out microwave sintering. The PTFE / ceramic composite membrane is prepared by microwave sintering, so that the sintering time and the production period are obviously shortened, and the production efficiency and the energy utilization rate of the product are obviously improved; the prepared PTFE / ceramic composite membrane is narrow in pore diameter and uniform in pore diameter distribution, has good hydrophobicity and oil-water separation performance, can effectively intercept 30-200nm nanoparticles, and has excellent anti-pollution capacity and stable separation performance for water-in-oil emulsions with different concentrations.

The invention belongs to the technical field of advanced metal ceramic composite materials, and particularly relates to high-toughness Ti (C, N)-based metal ceramic and a preparation method and application thereof. The high-toughness Ti (C, N)-based metal ceramic comprises the following components in percentage by weight: 50 to 70 percent of solid solution, 15 to 25 percent of metal binding phase, 0.1 to 0.5 percent of rare earth oxide or rare earth salt and 15 to 25 percent of carbide phase, the solid solution contains an amplitude-modulated decomposition structure. The solid solution hard phase with an amplitude modulation decomposition structure is reserved in the alloy containing a certain amount of metal binder, so that the metal ceramic material has higher fracture toughness, bending strength and high-temperature toughness compared with traditional Ti (C, N)-based metal ceramic under the condition that the hardness is kept unchanged.

The present invention relates to the field of carbon-carbon composite materials, and discloses a carbon-carbon composite material, a carbon-ceramic composite material, an anti-oxidation coating, and an aircraft brake disc. The anti-oxidation coating comprises components by weight: 150 parts of an aqueous solution of aluminum dihydrogen phosphate with a content of 37-43%, 70-130 parts of tin powder, 60-120 parts of silicon carbide powder, 15-60 parts of glass powder with a softening point of 600°C-900°C, 15-50 parts of kaolin, and 10-30 parts of boron carbide powder. The anti-oxidation coating can form a coating with good thermal stability and chemical stability by accurately proportioning and mixing a plurality of materials, and can protect the carbon-carbon composite material from oxidation under a high temperature environment.

The invention relates to the field of thermal spraying ceramic coatings, and particularly discloses plasma spraying ceramic powder, a ceramic composite coating and a preparation method of the ceramic composite coating. The plasma spraying ceramic powder is prepared from the following raw materials in parts by weight: 100 parts of nano powder and 10 to 30 parts of silicate glass powder, the nano powder comprises nano Al2O3 powder, nano TiO2 powder, nano CeO2 powder and nano YSZ (Yttria Stabilized Zirconia) powder in a weight ratio of (80-86): 10: 2: (2-8). The plasma spraying ceramic powder has the beneficial effects of being good in fluidity, smooth in surface, high in compactness and good in sphericity degree, and the prepared ceramic composite coating has the beneficial effects of being low in porosity, high in compactness, good in corrosion resistance and long in service life.

The invention belongs to the technical field of quartz ceramics, and particularly relates to a thermal shock resistant quartz fiber reinforced quartz ceramic composite material and a preparation method thereof. The preparation method of the thermal shock resistant quartz fiber reinforced quartz ceramic composite material comprises the following steps: S1, pretreating quartz fibers; s2, dipping the pretreated quartz fibers in first silica sol to prepare coating quartz fibers; s3, the coated quartz fibers are placed in second silica sol to be subjected to dipping forming treatment and high-temperature calcination, and the thermal shock resistant quartz fiber reinforced quartz ceramic composite material is obtained. The composite material disclosed by the invention can realize good thermal shock resistance, meanwhile, the bending strength is improved, the dielectric constant and the loss tangent value are reduced, and the composite material has a very good application prospect.

The invention provides a robot additive manufacturing device and method for ultrasonic-assisted continuous preparation of a composite fiber ceramic composite, and belongs to the field of composite fibers.The robot additive manufacturing device comprises the steps that a first feeding mechanism outputs a fiber bundle; the heating cavity is filled with a molten resin material; the first ultrasonic mechanism and the second ultrasonic mechanism are oppositely arranged on two inner walls of the heating cavity; the first ultrasonic mechanism and the second ultrasonic mechanism are symmetrically arranged on the two sides of the fiber bundle transmission direction, and the ultrasonic wave emission direction of the first ultrasonic mechanism and the second ultrasonic mechanism is the perpendicular direction of the fiber bundle transmission direction. When passing through the heating cavity, the fiber bundles are subjected to the effect of ultrasonic waves, fiber filaments in the fiber bundles are scattered and evenly distributed, the fiber filaments are wrapped by the resin material, and then the high-performance fiber-reinforced ceramic composite material is prepared after high-temperature ceramic treatment. Through the synchronous ultrasonic assistance-mechanical arm forming technology, the problems that in the prior art, due to the fact that the resin fluidity is poor and fibers are highly agglomerated, the fibers are difficult to evenly wrap by the resin, obvious pores appear in the subsequent ceramic treatment process, and fiber distribution is uneven are solved.

The invention provides a preparation method of pressureless sintered boron nitride composite ceramic, and relates to the technical field of ceramic composite material preparation. The method comprises the following steps: carrying out surface modification on boron nitride whiskers by using ethanolamine, and activating hexagonal boron nitride powder in a ball milling tank by using an alkaline solution; the preparation method comprises the following steps: uniformly mixing the boron nitride powder and the boron nitride powder in a mixing tank, carrying out cold isostatic pressing to obtain a cold-pressed green body, and carrying out high-temperature calcination on the cold-pressed green body in an inert atmosphere to finally obtain the boron nitride composite ceramic. According to the invention, the physical property characteristics of the boron nitride whisker are fully utilized, and the boron nitride whisker can be fully combined with the hexagonal boron nitride powder subjected to surface activation during calcination through further chemical surface modification, so that relatively high mechanical strength can be realized only by using one phase of boron nitride on the premise of not introducing other sintering aids; the method has the characteristics of high product purity, low production cost and high mechanical strength.

The invention discloses a high-thermal-conductivity PI / ceramic composite insulation packaging sheet and a preparation method thereof, and relates to the technical field of electronic packaging. The high-thermal-conductivity PI / ceramic composite insulation packaging sheet is obtained by mixing a modified polyimide solution and modified ceramic particles according to the mass ratio of (9-13): 1 and then performing high-temperature curing. The modified polyimide solution is obtained by mixing a dianhydride monomer and a diamine monomer in a molar ratio of 1: 1, and 2-methyl-2-acrylic acid-2, 3-dihydroxy propyl ester accounting for 5-10% of the total molar weight, and adding a catalyst for catalysis; the modified ceramic particles are obtained by adding hydroxymethyl acrylamide into a ceramic suspension, mixing, filtering, washing and drying. The packaging sheet prepared by the invention has high thermal conductivity, keeps stable at a relatively high temperature, is not easy to thermally deform, and has relatively high stability.

The present invention discloses a polyurea-ceramic composite coating for the leading edge of a wind turbine blade and a preparation method thereof. The coating comprises aspartic acid ester polyurea and ceramics. The ceramics have good strength and hardness, and can improve the hardness and toughness of the coating as a whole, and improve the overall anti-rainwater erosion performance of the coating. Specifically, the polyaspartic acid ester polyurea is made of polyetheramine, diisocyanate, polyaspartic acid ester resin and isocyanate as raw materials, and the polyetheramine is a hydrophilic monomer, so that the system has good hydrophilicity, which is conducive to forming a water film on the leading edge surface of the wind turbine blade, and effectively buffering the impact of raindrops on the leading edge of the wind turbine blade.

The invention belongs to the technical field of ceramic fibers, and discloses a hollow silicon dioxide microsphere modified heat insulation and noise reduction ceramic composite fiber and a preparation method thereof, and the preparation method comprises the following steps: preparing a ceramic fiber through an electrostatic spinning technology; preparing a hollow silicon dioxide microsphere impregnation liquid; and impregnating the prepared ceramic fiber in the prepared hollow silicon dioxide microsphere impregnation liquid in vacuum, and then freeze-drying to obtain the heat-insulating and noise-reducing ceramic composite fiber with a grape-string-like three-dimensional network structure. The preparation process is simple and rapid, and in addition, due to the modification of the hollow silicon dioxide microspheres on the fiber surface, the optimization of a pore structure and the synergistic effect of material vibration, the heat-insulation and noise-reduction ceramic composite fiber has excellent sound absorption performance and medium-high temperature heat insulation performance.

A self-standing, interconnected polymer-ceramic composite solid electrolyte is provided. The composite electrolyte includes a ceramic electrolyte scaffold defining a plurality of interconnected pores having a porosity of 45 to 55%. A crosslinked polymer electrolyte is disposed within the plurality of pores. A surface protection layer, including a linear polymer electrolyte is disposed on an exterior surface of the ceramic electrolyte scaffold. A method of manufacturing a composite electrolyte is also provided. The method includes combining a ceramic electrolyte, a binder, and a solvent to give a ceramic electrolyte slurry cast to give a ceramic electrolyte layer. The ceramic electrolyte layer is sintered to give a porous ceramic electrolyte scaffold defining a porosity of 45 to 55%. A polymer precursor solution is prepared and used to infiltrate the ceramic electrolyte and then cured.

The invention relates to the field of carbon-ceramic composite materials, in particular to a chopped carbon fiber reinforced carbon-ceramic composite material and a preparation method thereof.The chopped carbon fiber reinforced carbon-ceramic composite material is prepared from, by weight, 10-60 parts of chopped carbon fibers, 10-60 parts of silicon carbide powder, 10-60 parts of carbon powder, 10-60 parts of phenolic resin and 0.1-10 parts of graphene; the prepared carbon-ceramic composite material has good mechanical properties and excellent wear resistance, the densification process of the material is rapid and does not need to be repeatedly carried out, the time is saved, and the production efficiency is improved.

The invention discloses a paper folding type piezoelectric energy collector for collecting low-frequency energy. The paper folding type piezoelectric energy collector comprises a piezoelectric composite material paper folding cylindrical structure and two side end faces. The piezoelectric composite material origami cylindrical structure is obtained by bending and folding a planar piezoelectric composite material along a peak fold line and a valley fold line. In the bending process, the bent piezoelectric ceramic composite material can be manufactured by controlling external force in the sintering process. According to the invention, piezoelectric ceramic 3D printing is combined with a novel material inspired by paper folding. The piezoelectric ceramic suspension is used as 3D printing ink. The novel material structure is based on a Kresling origami cylindrical surface, but creases are hidden, the effective collection area is increased, and the electrical performance is improved. The multi-stable Kresling origami structure has low rigidity and a low energy barrier, so that energy collection in a low-frequency environment becomes possible, and the multi-stable Kresling origami structure is particularly suitable for ocean wave energy collection application.

The invention discloses a production process of high-strength anti-distortion cold-rolled strip steel. The production process comprises the links of raw material preparation, cold rolling, heat treatment, surface treatment and quality detection. Selecting medium-carbon steel with specific components as raw materials, and controlling the tolerance of hot-rolled strip steel; a six-roller unit is adopted for multi-pass rolling in cold rolling, and a plate shape control technology is matched; continuous annealing and gradient quenching-isothermal tempering are applied to heat treatment, so that a specific structure gradient is formed, and the distortion rate is reduced; the surface is subjected to acid pickling, hot galvanizing and a nano ceramic composite coating, so that the corrosion resistance and the wear resistance are improved; and the quality is guaranteed through online detection and sampling inspection. The strip steel produced through the technology is high in strength, good in toughness, high in corrosion resistance and suitable for the high-requirement field.

The invention relates to a novel sound barrier plate, and belongs to the field of buildings and engineering. The formula comprises a bottom layer material formula and a surface layer material formula, wherein the bottom layer material formula comprises the following components in percentage by mass: 38-50% of diatomite; 15-30% of blast furnace slag; 5-12% of calcite; 2-6% of calcined talc; 2-5% of potassium feldspar; 3-8% of kaolin; 5 to 13% of bentonite; 5-10% of quartz; 2-6% of iron oxide red; 0.2%-0.8% of a foaming agent; 0.1 to 0.4 percent of a water reducing agent; the formula of the surface layer material comprises the following components in percentage by mass: 32-55% of perlite micro powder; 15-27% of calcined talc; 17 to 27% of bentonite; 4-10% of kaolin; 0.1-0.3% of a foaming agent; 0.1 to 0.4 percent of a water reducing agent; the preparation method of the sound barrier plate adopts a secondary material distribution forming process. The foamed ceramic composite sound barrier plate is of a double-layer structure and is provided with the sound insulation back plate; and through high-temperature firing, layering and cracking are avoided in use. The bottom-layer material replaces a base plate, so that the process production cost is reduced; the surface of the bottom layer material is flat after foaming and firing, cutting is not needed, and material waste is reduced. According to the invention, blast furnace slag is used as a raw material, which is an effective way for turning blast furnace slag into wealth.

The invention discloses a composite high-temperature wear-resistant gradient coating special for a titanium alloy knife edge. The composite high-temperature wear-resistant gradient coating comprises a Ni-Ti transition coating, a Co-based alloy coating and a Co-based ceramic composite wear-resistant coating which are sequentially arranged on the surface of the titanium alloy knife edge in a laser cladding mode. The preparation method comprises the following steps: 1, polishing and cleaning a titanium alloy knife edge; 2, Co-based ceramic composite wear-resistant coating powder is prepared; 3, drying the raw material powder; and fourthly, the dried powder serves as raw materials, and laser cladding of a Ni-Ti transition coating, a Co-based alloy coating and a Co-based ceramic composite wear-resistant coating is sequentially conducted on the treated titanium alloy knife edge. By controlling the gradient change of the contents of Ti and Ni elements in the Ni-Ti transition coating, Ti and Co elements are prevented from being combined to form a brittle phase, the cracking sensitivity of the Co-based alloy coating is reduced, and falling is prevented; according to the laser cladding method, the heat input amount is controllable, and the bonding strength of the coating and the titanium alloy knife edge base body is improved.

The invention relates to a high-temperature wear-resistant nickel-based metal-ceramic composite coating, which consists of the following components in percentage by mass: 70 percent of NiCrAlY powder serving as a matrix, 10 to 20 percent of Al2O3 ceramic powder serving as a wear-resistant phase and 10 to 20 percent of a lubricating phase, the lubricating phase is composed of one or two of h-BN, Ag powder and Mo powder; the h-BN is nickel-coated core-shell structure powder with the mass fraction of 60% of metal Ni serving as a shell layer and coated on the periphery of 40% of an h-BN core. Meanwhile, the invention further discloses a preparation method of the composite coating. The composite coating has good compactness and high hardness and bonding strength, and the wear rate at the high temperature of 900 DEG C can be reduced to 10 <-6 > mm < 3 > / N.m.

The invention relates to the technical field of light-cured nitride ceramic materials, in particular to low-viscosity light-cured nitride ceramic slurry as well as a preparation method and application thereof. The light-cured nitride ceramic slurry is prepared by carrying out ball milling and mixing treatment on nitride ceramic composite powder, polyacrylate, a first dispersing agent DC, a stabilizer and a photoinitiator according to the mass ratio of (65 to 75) to (15 to 30) to (1.0 to 5.0) to (5.0 to 10.0) to (0.5 to 1.5). According to the photocuring nitride ceramic slurry, the solid content is larger than or equal to 65 wt.%, the photocuring depth is larger than or equal to 60 micrometers, the viscosity is smaller than or equal to 2500 mPas, the viscosity change rate is smaller than or equal to 10% after the slurry naturally stands for 200 h, the sedimentation rate is smaller than or equal to 20%, and the technical problem that the solid content, the viscosity, the photocuring depth and the long-term stability of traditional photocuring nitride ceramic slurry are difficult to consider at the same time is solved. And the manufacturability of nitride ceramic slurry photocuring 3D printing of large-size complex structural parts is remarkably improved.

The present invention provides a ceramic particle (141) and a coating layer (142) that covers at least a part of the surface of the ceramic particle and contains two or more phases. The coating layer contains a first phase (142a) that is composed of an oxide-based ion conductor, and a second phase (142b) that is composed of an amorphous-containing ion conductor which contains an amorphous phase. The first phase has an ionic conductivity which is higher than that of the second phase. The second phase has a Young's modulus which is lower than that of the first phase.

The invention provides a transparent bulletproof ceramic composite structure with an electric heating function and a preparation method of the transparent bulletproof ceramic composite structure. The composite structure comprises an anti-splashing layer (1), a first middle layer film (2), a multi-layer stacked structure (3) of glass sheets and films, a first transition layer (4), an electric heating film layer (5), a second transition layer (6), a ceramic layer (7), a first antireflection film layer (8), a second antireflection film layer (9), a third antireflection film layer (10), a second middle layer film (11), an inorganic glass layer (12), a third transition layer (13) and an anti-static layer (14) which are arranged in sequence. The composite structure provided by the invention has excellent impact resistance and bulletproof grade, can effectively resist the damage of high-speed elastic sheets or impact objects, and meets the requirements of high-safety application scenes such as weapon armors, armed airplanes and high-speed trains; and the anti-static film has clear optical observation capability, high transmissivity and anti-static property.

The invention relates to the technical field of layered product materials, and discloses a polymer-ceramic composite dielectric material, a preparation method and application of the polymer-ceramic composite dielectric material to a capacitor. The preparation method of the polymer-ceramic composite dielectric material comprises the following steps: adding composite modified pullulan and modified composite nanosheets into N, N-dimethylformamide to obtain a mixed solution A, and casting to form a film to obtain an outer film; adding the composite modified pullulan and the modified ceramic-based composite filler into N, N-dimethylformamide to obtain a mixed solution B, and pouring to form a film to obtain an inner-layer film; and clamping the inner-layer film between the outer-layer films, carrying out hot press molding, and cooling to obtain the polymer-ceramic composite dielectric material with a three-layer structure. The polymer-ceramic composite dielectric material provided by the invention has good dielectric property, energy storage property and heat resistance, and can be applied to capacitors.