101 results about "Carbon black nanoparticles" patented technology

The invention discloses a microencapsulation repairing agent and an intelligent self-repairing ultrahigh-strength ultrahigh-toughness cement-based structural material, the microencapsulation repairing agent is mainly composed of a humidity-responsive outer layer, a pH-responsive middle layer and a temperature-responsive inner layer, and the outer layer is modified with a silane coupling agent. The intelligent self-repairing ultrahigh-strength ultrahigh-toughness cement-based structural material is mainly prepared from the microencapsulated repairing agent, nano carbon black, nano montmorillonite, nano cellulose and other raw materials. According to the invention, by introducing the self-repairing microcapsule with a specific structure and materials such as nano carbon black, nano montmorillonite and nano cellulose, the strength, toughness and durability of the concrete are remarkably improved, and the concrete has an intelligent self-repairing function.

The invention provides a super-hydrophobic / super-oleophylic degradable photo-thermal aerogel adsorption material and demulsification performance thereof, and belongs to the technical field of oil-water separation materials, and the super-hydrophobic / super-oleophylic degradable photo-thermal aerogel adsorption material is prepared by the following steps: (1) extracting cellulose from waste cartons and performing ultrasonic dispersion to prepare a cellulose suspension; (2) preparing a chitosan solution; (3) mixing the cellulose suspension and the chitosan solution to obtain a cellulose / chitosan composite solution, adding nano carbon black particles, glutaraldehyde and a methyltrimethoxysilane aqueous solution into the cellulose / chitosan composite solution, and stirring; (4) injecting the mixed solution into a mold, and performing directional freezing on a semiconductor refrigeration platform; and (5) performing freeze drying on the frozen sample, and then putting the frozen sample into a drying oven for cross-linking to obtain the aerogel. The aerogel is obtained by taking cellulose extracted from waste cartons and chitosan as organic frameworks, carrying out chemical crosslinking through glutaraldehyde, introducing nano carbon black particles as photo-thermal components and carrying out hydrophobic modification through methyltrimethoxysilane, and has an excellent pore structure, super-hydrophobicity-super-lipophilicity and excellent mechanical properties; the adsorbent has efficient adsorption capacity on high-viscosity crude oil; and the device can be repeatedly used and is biodegradable, so that the burden on the environment is reduced.

The invention discloses a high-temperature-resistant and corrosion-resistant smelting furnace lining material which is prepared from the following raw materials in percentage by weight: 55-60% of fused magnesite coarse particles, 30-35% of fused magnesite fine particles, 2-3% of crystalline flake graphite, 0.5-0.9% of nano carbon black, 1-2% of phenolic resin doped with transition metal elements and 1-3% of Al2O3-SiC powder, the transition metal element comprises at least one of Ti, Co, Ni, Fe or Cr. The performance of the smelting furnace lining material is superior to that of a furnace lining material which singly adopts crystalline flake graphite as a carbon source, the corrosion resistance and permeability of the smelting furnace lining material to oxidizing slag can be improved, and the oxidation resistance of the smelting furnace lining material is also improved to a certain extent.

The invention discloses a fine-grain tungsten-nickel-iron composite material and a low-temperature sintering preparation method thereof. The composite material takes W as a hard phase, Ni and Fe as binding phases, Y2O3 as a particle reinforcement phase and a grain growth inhibitor, and Sn as an alloy element and a sintering fluxing agent. The preparation method comprises the following steps: 1, carrying out carbon heat and hydrogen reduction on WO3, NiO, Fe2O3 and nano carbon black to obtain composite powder; 2, carrying out wet grinding with Sn and Y2O3 powder, and drying; 3, compression molding; 4, degreasing and pre-sintering treatment; and 5, low-temperature liquid-phase sintering. According to the composite material, low-temperature liquid-phase sintering is achieved by introducing the Sn element and the Y2O3, the wettability and the interface bonding force between W crystal grains and a bonding phase are improved, and the composite material with uniform components and refined crystal grains is obtained; the preparation method improves the tensile strength, microhardness and room temperature plasticity of the composite material, and is suitable for the fields of aerospace, national defense and military industry, nuclear industry, electronic information, metallurgy and the like.

The invention discloses a high-temperature-resistant organic silicon elastomer with high mechanical property as well as preparation and application thereof, and belongs to the technical field of functional materials. The high-temperature-resistant organic silicon elastomer with high mechanical property is prepared from the following raw materials: hydroxyl silicone oil, white carbon black nanoparticles, a silane monomer cross-linking agent, a silane coupling agent and stannous octoate, and the catalyst also comprises cage-shaped titanium oxygen cluster molecules. According to the invention, by simultaneously using the components, the composite high-temperature-resistant organic silicon elastomer material can be provided, the thermal collapse temperature of the material is almost 500 DEG C, and the composite high-temperature-resistant organic silicon elastomer material is good in thermal stability and mechanical tensile strength and wide in application prospect.

The invention belongs to the field of electrochemical sensors, and relates to an electrochemical sensor for high-sensitivity detection of carbendazim and a preparation method of the electrochemical sensor. The surface of a glassy carbon electrode (GCE) is modified with an LDMS-CCN-GCT nanocomposite material prepared from dendritic large-aperture mesoporous silica, conductive carbon black nanoparticles and graphitized carbon nanotubes, and a CCN-GCT-LDMS / GCE working electrode is formed. The preparation method comprises the following steps: firstly, uniformly dispersing CCN and GCT in an N, N-dimethylformamide solution through magnetic stirring in an ultrasonic environment, wherein the CCN and the GCT are equal in mass; then, adding LDMS into the solution, and carrying out ultrasonic dispersion to obtain a uniformly mixed CCN (at) GCT (at) LDMS suspension; and finally, dispensing the uniform suspension onto the surface of GCE, and drying under an infrared lamp to prepare the working electrode CCN (at) GCT (at) LDMS / GCE modified by the CCN (at) GCT (at) LDMS nano composite material. Based on the synergistic effect generated by LDMS and CCN-coated GCT, the CCN-coated GCT-coated LDMS / GCE sensor is high in sensitivity, the detection limit can reach 7.36 nM, and the CCN-coated GCT-coated LDMS / GCE sensor has excellent carbendazim sensing detection performance.

The invention discloses a preparation method of a wood water collecting material for extracting water from air. The method comprises the steps that natural wood is pretreated, a photo-thermal material-nano carbon black is added, the material is endowed with photo-thermal conversion performance, then moisture absorption salt is added, a product is subjected to freeze drying after loading is finished, and the high-moisture-absorption wood is obtained. The method has the advantages of simple process flow, mild reaction conditions, short reaction time, excellent moisture absorption and photo-thermal conversion performance, and good practical application value.

The invention relates to the technical field of layered materials, and discloses a heat-storage and warm-keeping composite fabric and a preparation method thereof. The preparation method of the heat-storage and warm-keeping composite fabric comprises the following steps: preparing the modified acrylic fibers loaded with the modified phase-change microcapsules; the preparation method comprises the following steps: blending Cs0. 33WO3 nanoparticles and a PA6 / 66 copolymer, extruding, slicing, and carrying out melt spinning with the PA6 / 66 copolymer to obtain modified PA6 / 66 hollow fibers; preparing a polyurethane finishing liquid containing the modified nano carbon black and chitosan; preparing the modified acrylic fibers and the cotton fibers into an outer fabric; the modified PA6 / 66 hollow fiber is made into a middle layer fabric; fitting the inner-layer fabric, the middle-layer fabric and the outer-layer fabric to obtain a composite fabric; and finishing the composite fabric with a polyurethane finishing liquid to obtain the heat-storage and warm-keeping composite fabric. The heat-storage and warm-keeping composite fabric has excellent antistatic performance, heat-storage and warm-keeping performance, anti-pilling performance, moisture absorption and air permeability.

The invention provides a concrete electrode material, a preparation method thereof and an application of the concrete electrode material in preparation of a supercapacitor. The preparation method comprises the steps that concrete mortar, paper fibers, nano carbon black and a water reducing agent are evenly mixed to prepare concrete mixed slurry, the mass ratio of the concrete mortar to the paper fibers to the nano carbon black is 1: (0.005-0.01): (0.01-0.02), and the mass ratio of the water reducing agent to the nano carbon black is 0.08-0.1: 1; and pouring the concrete mixed slurry into a mold for shaping and curing. The paper fiber is introduced into the concrete electrode material, so that the capacitance characteristic of a concrete electrode under the condition of low nano carbon black doping amount is enhanced, the mechanical property loss is reduced, and the raw material cost is reduced together with the standard sand. The concrete material is used as an electrode of the supercapacitor, so that the supercapacitor not only has relatively high specific capacitance, but also has relatively high mechanical strength, and is low in cost.

The preparation method comprises the following steps: mixing NaOH, 3, 5-pyrazole-di-carboxylic acid-1-hydrate and water, dissolving to obtain a solution I, dissolving an aluminum salt in water to obtain a solution II, adding the solution II into the solution I, uniformly mixing, carrying out a hydrothermal reaction, and carrying out centrifugal filtration to obtain a solid MOF-Al; the preparation method comprises the following steps: uniformly mixing MOF-Al powder, carbon black nanoparticles and hydroxymethyl cellulose with water to prepare a soft material, granulating the soft material, and drying at 40 DEG C to prepare moisture-retaining particles; and adding the moisture-retaining particles into the filter stick to obtain the moisture-retaining filter stick. The carbon black nanoparticles in the filter stick rapidly absorb heat of smoke passing through the filter stick and promote the MOF-Al material to release moisture, so that the moisture in the smoke is increased, excessive dryness of the oral cavity and the throat caused by smoking is avoided, the discomfort of a smoker is relieved, and the smoking experience of a consumer is improved.

The invention provides a hydrogel-based radiation refrigeration moisture power generation material and a preparation method and application thereof, and belongs to the technical field of moisture power generation materials.The hydrogel-based radiation refrigeration moisture power generation material comprises a nano carbon black layer, a conductive hydrogel layer and a titanium dioxide layer which are sequentially stacked; the conductive hydrogel layer comprises a hydrogel matrix, a conductive filler and a temperature-sensitive material; the temperature-sensitive material comprises at least one of poly (N-isopropylacrylamide), a polyethylene glycol and polylactic acid copolymer and vanadium oxide; the cross section of the hydrogel-based radiation refrigeration moisture power generation material is of a W-shaped structure. The conductive hydrogel layer is of a three-dimensional network structure with conductivity and temperature-sensitive characteristics; the titanium dioxide layer realizes efficient sunlight reflection, the nano carbon black layer enhances heat conduction and conductivity, and the W-shaped structure promotes moisture flow and circulation; the multifunctional power generation device prepared based on the hydrogel-based radiation refrigeration moisture power generation material has good radiation refrigeration and moisture power generation performance, and is excellent in stability and durability.

The invention discloses a boron nitride conductive ceramic evaporation boat and a preparation method thereof. The boron nitride conductive ceramic evaporation boat comprises the following raw materials in parts by weight: 80-100 parts of boron nitride, 30-40 parts of titanium boride, 30-40 parts of zirconium silicate, 10-15 parts of boron oxide, 10-15 parts of nano carbon black, 8-12 parts of silicon carbide, 4-6 parts of nano yttrium oxide and 1-2 parts of polyacrylamide. The preparation method comprises the following steps: (1) weighing the raw materials, and uniformly mixing; (2) wet ball milling; (3) drying; (4) cold isostatic pressing forming; and (5) carrying out hot pressed sintering and cooling. The long-term stability of the product is improved, the produced product has advanced performance and quality, shorter preheating time, better molten aluminum spreading capacity, fewer sputtering and boat bending problems, longer service life and more economic choices, production of various materials such as metallized films, paper and textiles can be met, and the production cost is reduced. The aluminum-plated film is widely applied to the industries of vacuum evaporation packaging materials, capacitor metallization vacuum coating, paper aluminum plating, gold stamping plating, anti-counterfeiting mark aluminum plating and the like.

The invention discloses a preparation method of an ESBR / SiO2-coated ESSBR composite material, and belongs to the technical field of rubber composite material production, and the preparation method comprises the following steps: S1, preparing white carbon black nanoparticles; s2, preparing a dopamine solution; s3, additionally preparing white carbon black (SiO2-PDA) modified by dopamine; s4, preparing a SiO2 coated ESSBR (Ethylene Styrene Butadiene Rubber) organic hybrid filler; s5, flocculating a mixture of emulsion polymerized styrene-butadiene rubber and the SiO2 (at) ESSBR organic hybrid filler to obtain a rubber master batch; s6, adding the rubber master batch, zinc oxide, stearic acid and an antioxidant 4020 into the internal mixer, mixing for 6 minutes, discharging rubber, cooling to room temperature, mixing on an open mill, adding sulfur and an accelerant CZ, batching out, and cooling for later use; s7, vulcanizing the rubber compound in a press vulcanizer, and fully cooling at room temperature after vulcanization to obtain the ESBR / SiO2-coated ESSBR composite material, the technical problems of low grafting rate of white carbon black, poor dispersibility of silicon dioxide and poor compatibility of silicon dioxide and a rubber matrix are solved, and the ESBR / SiO2-coated ESSBR composite material is widely applied to production of rubber composite materials.

The invention discloses a double-core water-blocking weather-proof photovoltaic direct-current cable and a preparation method thereof, and the cable comprises two cable bodies, and is characterized in that each cable body is provided with a tinned conductor, water-blocking glue, an insulating layer, a water-blocking tape and a sheath layer from inside to outside in sequence; a connecting rib is fixedly arranged between the two sheath layers; the water-blocking tape is arranged outside the insulating layer in a double-layer wrapping mode, and the double-layer water-blocking tape is composed of a PET base material and acrylic acid glue. The insulating layer is arranged in a double-layer mode, the inner layer is XLPE added with 3% of nanometer aluminum hydroxide, the outer layer is XLPE added with 5% of nanometer carbon black, the space between the tinned conductor and the insulating layer is coated with hot-melt water-blocking glue for longitudinal water blocking, the space between the tinned conductor and the insulating layer is provided with a double-layer water-blocking tape for radial water blocking, the water-blocking performance of the cable is effectively improved, the inner layer of the insulating layer is XLPE added with 3% of nanometer aluminum hydroxide, and therefore the water-blocking performance of the cable is effectively improved. And the outer layer is made of anti-ultraviolet and water-resistance XLPE added with 5% of nano carbon black, so that the water resistance and the anti-ultraviolet performance of the cable are improved.

The invention provides pigment ink for a medical film, which comprises a color developing agent, the color developing agent comprises a first color developing agent, a second color developing agent and a third color developing agent, the first color developing agent is pigment, the second color developing agent is rare earth doped zirconium oxide, and the third color developing agent is nano carbon black; the first color developing agent accounts for 3%-10% of the pigment ink by mass, the second color developing agent accounts for 5%-10% of the pigment ink by mass, and the third color developing agent accounts for 2%-8% of the pigment ink by mass. The pigment ink disclosed by the invention contains three color developing agents, and the three color developing agents are combined to improve the image color contrast and definition of the color developing agents on a blue PET (Polyethylene Terephthalate) film.

The invention discloses a fluid power generation fiber with a two-phase gradient structure and a preparation method and application thereof, and belongs to the technical field of fiber materials, the fluid power generation fiber comprises a porous network-shaped cellulose sponge layer at a core part and a carbon black nanoparticle accumulation layer located outside the core part; the cellulose sponge layer is provided with micron-sized pores, and the pores are reduced from the center to the edge; the carbon black nano-particle accumulation layer is provided with nano-scale pores; the cellulose micro-nano channels with negative charges form overlapped double electric layers, when fluid is directionally transmitted in the fiber, ions with positive charges are promoted to move to form current, and a certain potential difference is accumulated and generated, so that continuous green power generation can be realized by utilizing the interaction between the fluid and the fiber, and power can be supplied to small electronic equipment; the method is expected to play an important role in a portable wearable self-powered system.

This application discloses a light-resistant and scratch-resistant gravure inkjet printing ink and its preparation method, belonging to the field of novel ink technology. The light-resistant and scratch-resistant gravure inkjet printing ink comprises the following raw materials in parts by weight: 38-45 parts of fluorosilicone modified polyacrylate emulsion, 7-11 parts of modified composite powder, 6-9 parts of nano carbon black, 1.2-1.8 parts of dispersant, 0.6-1.2 parts of leveling agent, 0.3-0.6 parts of defoamer, 1.5-2 parts of abrasion-resistant agent, 0.4-0.8 parts of AMP-95, and 25-35 parts of deionized water. This application limits the composition and weight of the inkjet ink, and uses fluorosilicone modified polyacrylate emulsion as the film-forming main body to endow the ink with low surface energy, high water resistance and excellent adhesion to film substrates; combined with modified composite powder, it effectively improves the dispersibility of nanoparticles, avoids agglomeration and clogging, and significantly improves the sun resistance and anti-aging performance. Overall, it takes into account high sun resistance, high scratch resistance, strong adhesion, environmental protection and low VOC, and is highly suitable for high-speed gravure inline inkjet printing scenarios.

The present invention relates to the technical field of layered materials, and discloses a heat storage and warmth-keeping composite fabric and a preparation method thereof. The preparation method of the heat storage and warmth-keeping composite fabric comprises the following steps: preparing modified acrylic fiber loaded with modified phase change microcapsules; 0.33 WO3 nanoparticles are blended with a PA6 / 66 copolymer, extruded and sliced, and then melt-spun with the PA6 / 66 copolymer to obtain modified PA6 / 66 hollow fibers; a polyurethane finishing solution containing modified nano-carbon black and chitosan is prepared; an outer layer fabric is made from modified acrylic fiber and cotton fiber; an intermediate layer fabric is made from the modified PA6 / 66 hollow fibers; the inner layer fabric, the intermediate layer fabric, and the outer layer fabric are laminated to obtain a composite fabric; and the composite fabric is finished with the polyurethane finishing solution to obtain a heat-storage and heat-insulating composite fabric. The heat-storage and heat-insulating composite fabric of the present invention has excellent antistatic properties, heat-storage and heat-insulating properties, anti-pilling properties, and moisture absorption and breathability.

The invention provides a composite coating for laser shock peening and a preparation method and a use method thereof, and belongs to the field of laser shock peening, the composite coating is composed of an absorption layer coating and a restraint layer coating, the restraint layer coating comprises 15%-25% of sodium carboxymethyl cellulose, 10%-15% of gelatin, 5%-7% of glycerin, 4%-8% of propylene glycol, 2%-5% of polyethylene glycol, 0.1%-0.5% of calcium citrate and the balance of water, the absorbing layer coating comprises 45%-55% of water-based acrylic resin, 5%-10% of absolute ethyl alcohol, 2%-3% of polyvinylpyrrolidone, 15%-20% of nano carbon black and 25%-30% of nano coating powder. Through the composite coating provided by the invention, coating and impact strengthening of a special-shaped workpiece material can be synchronously realized.

The invention discloses a wet deacidification process and device for fumed silica, and belongs to the technical field of deacidification. The middle lower end of the tank body is connected with a deacidification assembly; the deacidification assembly comprises an air inlet assembly, a material bearing assembly and a material discharging assembly, the air inlet assembly is fixedly connected with the tank body, the material bearing assembly is installed at the air outlet end of the air inlet assembly, the material discharging assembly is in attached sliding connection with a transverse hole formed in the bottom of the material bearing assembly, and the material discharging assembly is fixedly connected with the tank body; the middle lower end of the tank body is further connected with a feeding assembly, and the discharging end of the feeding assembly is movably connected with the material bearing assembly; a top cover is fixedly connected to the top of the tank body; a filtering assembly is fixedly connected to the top in the top cover. According to the method disclosed by the invention, the gas-phase white carbon black is in contact with water vapor, the water vapor penetrates through internal channels of the gas-phase white carbon black nanoparticles to carry out acidic substances on the surfaces of the gas-phase white carbon black nanoparticles, so that the acidic substances on the surfaces are removed, the deacidification process can be completed in a relatively short time through wet and hot air deacidification, and man-made impurities in a product are reduced.

The invention relates to a super-soft yarn-loosening-resistant nano-composite roller shutter fabric and a manufacturing method thereof. The composite roller shutter fabric comprises a base cloth layer, a foaming coating, a PUR glue layer and a fabric layer which are sequentially compounded, the base cloth layer is made of polyester plain grey cloth, warp is made of composite yarn with fully-drawn yarn as a core layer and wrapped with draw-textured yarn, and weft is made of draw-textured yarn; the foaming coating is formed by coating water-based acrylate foaming glue containing nano TiO2 and nano carbon black and carrying out sectional foaming curing; the PUR glue layer is of a discrete point structure formed by low-modulus flexible PUR glue, and the projection width of glue points in the weft direction is smaller than the center distance of weft yarns of the base cloth; and the fabric layer is made of terylene sanded cloth. By means of the collaborative design of the structure and the technology, the interlayer bonding firmness is guaranteed, meanwhile, edge yarn scattering is effectively restrained, the rigidity of the composite fabric is remarkably reduced, and the composite fabric is suitable for large-width building roller shutter sunshade products.

The invention belongs to the technical field of piezoelectric ceramic material research, and particularly relates to a PZT-5A porous piezoelectric ceramic material as well as a preparation method and application thereof. The PZT-5A porous piezoelectric ceramic material is prepared from the following raw materials: PZT-5A powder, nano carbon black, a dispersing agent and an organic carrier, wherein the mass ratio of the PZT-5A powder to the nano carbon black is 228: (9-11), and the mass of the dispersing agent is 1%-2.5% of the total mass of the PZT-5A powder and the nano carbon black. The invention provides a PZT-5A porous piezoelectric ceramic material as well as a preparation method and application thereof, PZT-5A powder is adopted, nano carbon black is used as a sacrificial template, a uniform porous structure with the porosity of about 25% and the aperture of 1-5 microns is prepared, and the PZT-5A porous piezoelectric ceramic material is suitable for application scenes such as ultrasonic sensing, broadband piezoelectric transducers and energy collection.

The invention relates to the field of surface engineering, and discloses a surface touch-resistant extinction flexible film, a preparation method and application thereof and a flexible extinction component. According to the matting flexible film, the nano carbon black and the matting powder are used as fillers, the flexible organic silicon resin is used as a binder to provide bonding performance, the film adopts the structure of the bottom coating and the top coating, and on the basis of optimizing the formula of the bottom coating and the top coating, the high uniform covering performance of the bottom coating and the micro-nano rough structure of the top coating are shown, and the matting effect is good. Meanwhile, the same-series binder material of the bottom coating and the top coating is utilized, so that an integral coating layer structure without a clear interface between the bottom coating and the top coating but with different functions and purposes is realized, and a touch-resistant micro-nano rough coating layer surface matched with the high-flexibility folding and unfolding characteristic of polyimide is formed; the touch-resistant ultra-high-absorptivity flexible film capable of resisting large-angle light scattering and meeting engineering application is obtained and can be used as a flexible shading material of a space telescope.

The invention relates to a sensing garment for detecting human body posture actions and physiological information, which comprises a garment body, a plurality of sensing fibers are arranged in the garment body according to detection items, and electric signals collected by the sensing fibers are transmitted to a controller through conductive yarns arranged in the garment body. The controller is used for remotely transmitting the electric signals to the upper computer, the sensing fibers are strain sensing fibers which are based on carbon black nano-particles or polyurethane materials and are of core-sheath structures, and the sensing fibers are implanted into the garment body in a weft insertion mode. The conductive yarn comprises low-elasticity non-conductive yarn serving as an inner core and conductive metal wires or silver-plated yarn spirally wrapping the low-elasticity non-conductive yarn. The sensing fibers instead of hard sensors are used as sensing elements, inconvenience and activity limitation of a user are reduced, the wearing comfort is improved, the sensing garment has the real-time detection capacity of various signals, and the functionality and the use value of the sensing garment are improved.

The invention provides a radiation refrigeration-hydrogel power generation composite material and a preparation method and application thereof, and belongs to the technical field of crossing of novel energy materials and intelligent temperature control materials, the radiation refrigeration-hydrogel power generation composite material comprises a radiation refrigeration layer and a hydrogel power generation layer, the radiation refrigeration layer comprises a PVDF / PPy porous membrane, and the surface of the PVDF / PPy porous membrane is provided with a PPy coating; the hydrogel power generation layer comprises chitosan / acrylic acid hydrogel, lithium chloride and nano carbon black. Through the design of a double-layer heterogeneous structure and the construction of a porous conductive network, radiation refrigeration and moisture power generation are vertically coupled, and an energy closed loop of passive heat dissipation and active power generation is achieved. Meanwhile, core support is provided for construction of a zero-carbon refrigeration technical system, a brand new technical path is provided in the fields of building energy conservation, cold-chain logistics, intelligent wearable equipment and the like, fossil energy consumption is reduced, continuous energy supply is achieved through environmental energy collection, and the requirements for global energy transformation and sustainable development are met.

The application discloses a preparation method of a stock solution colored anti-ultraviolet nylon 66, and comprises the following steps: oxidation modification coloring, coating modification coloring, graft modification coloring and PA66 stock solution colored CIELAB color brightness value comparison. The preparation method is characterized in that: carbon black is surface treated through oxidation modification, coating modification and graft modification respectively, the influence of modification methods and processes on the surface performance and dispersion performance of carbon black is researched; then, the modified carbon black is dispersed in a PA66 matrix through solvent evaporation, high-temperature and high-pressure solution pre-polymerization-melt final polymerization and solid-phase polymerization, the influence of carbon black particle surface modification and PA66 coloring methods on the compatibility and dispersion of carbon black particles in the PA66 matrix is researched, and the relationship among the mass fraction of modified carbon black, the surface morphology of the PA66 film, the thermal performance, the crystallization performance and the CIELAB color brightness value is explored. High-quality nano carbon black is provided for PA66 fiber stock solution coloring.

The present invention discloses a coating with high infrared emissivity and strong bonding force on the surface of a carbon / carbon composite material, its preparation method and application, which relates to the technical field of infrared radiation coating materials. The coating components and the mass fractions of each component are as follows: 22-26 parts of carbon nanotubes, 6-8 parts of carbon nanotube dispersant, 15-20 parts of nano carbon black, 3-5 parts of phenolic resin, 8-11 parts of urea, and 5000-6100 parts of isopropanol. By applying carbon nanotubes and using the foaming effect of urea for pore regulation, the present invention is beneficial to reducing the areal density of the coating, and better weight reduction benefits can be obtained. Moreover, raw materials with low prices are selected as the main materials of the coating, the composition of the coating is optimized, and an infrared high-emissivity coating with good interfacial bonding with the carbon / carbon composite material and excellent thermal shock resistance is prepared through a simple preparation process.

The invention belongs to the technical field of flame-retardant silicone rubber, and particularly relates to a flame-retardant diphenoxy phosphate silicone rubber material as well as a preparation method and application thereof. The flame-retardant diphenoxy phosphate silicone rubber material prepared by the invention is prepared from the following raw materials in parts by mass: 100 parts of polydimethylsiloxane, 10-50 parts of nano carbon black, 80-120 parts of calcium carbonate, 10-30 parts of magnesium hydroxide, 10-30 parts of a phosphate flame retardant, 2-6 parts of dimethyl silicone oil, 1-3 parts of a cross-linking agent, 1-3 parts of a coupling agent and 1-3 parts of a catalyst, and the mass ratio of magnesium hydroxide to the phosphate flame retardant is (1-3): 1. According to the invention, a flame-retardant system formed by compounding magnesium hydroxide, nano carbon black and a phosphate flame retardant is used, so that the flame-retardant effect of the material is improved through a synergistic effect, and meanwhile, adverse effects on mechanical properties are reduced; meanwhile, the nano carbon black is introduced, so that the mechanical property of the silicone rubber is enhanced while the high flame-retardant property is maintained, and the long-standing contradiction between the flame-retardant property and the mechanical property in the industry is solved.

The invention discloses an antistatic flame-retardant PA5T / 56 composite material and a preparation method thereof, and relates to the technical field of high polymer materials, the composite material comprises the following components by mass: 45%-60% of PA5T / 56 resin, 20%-40% of glass fiber, 10%-15% of silane modified nano carbon black, 5%-10% of stearic acid modified nano calcium carbonate, and 0.5%-2% of an antioxidant. The silane modified nano carbon black and the stearic acid modified nano calcium carbonate are compounded to play a synergistic enhancement role, so that the antistatic property and the flame retardant property of the PA5T / 56 material can be effectively improved; load is transmitted and stress is dispersed through interface combination of the glass fiber and the PA5T / 56 matrix, so that the rigidity of the material is improved; and by adding the antioxidant, the thermal stability of the composite material can be improved.

The invention belongs to the field of inorganic filler preparation, and particularly relates to a preparation method of full-hollow silicon carbide microbeads, which comprises the following steps: sol preparation: mixing and stirring 20-40% by mass of nano carbon black, 1-5% by mass of a modifier and 30-90% by mass of silica sol to obtain sol; the sol obtained in the step S1 is dried in a spray dryer, the specific surface area and surface functional groups of the nano carbon black are optimized, and a carbon enrichment layer formed by phenolic resin coating carbonization is combined, so that the contact area and reaction active sites of the carbon black and silicon are greatly increased; meanwhile, the proportion of the high-purity spherical silicon powder and the carbonized microbeads and the addition of the dispersing agent avoid the agglomeration of the silicon powder, so that the liquid-phase silicon is rapidly impregnated and reacts with carbon under the capillary action during sintering. The silicon-carbon reaction rate is increased, and the high-temperature sintering energy consumption of a unit product is reduced.