20 results about "Carbon black nanoparticles" patented technology

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 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 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 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.

The invention discloses low-frequency electromagnetic shielding concrete and a preparation method thereof, and belongs to the technical field of electromagnetic shielding concrete preparation. The low-frequency electromagnetic shielding concrete is prepared from a wet material and a dry material, wherein the wet material is prepared from water, a nano carbon black dispersing agent and a defoaming agent; the dry material is prepared from the following components: cement, an admixture, nano carbon black, steel fibers, magnetic aggregate and a water reducing agent; the mass ratio of the water to the cement is 0.4 to 0.68. A multi-scale and multi-dimensional developed electric conduction and magnetic conduction network is built in a three-dimensional space in the concrete, a tiny electromagnetic leakage area in the concrete is made up from different scales, the situation that an electric conduction and magnetic conduction path is disconnected in the electromagnetic concrete is avoided, effective shielding protection can be formed for 14 kHz-950 MHz low-frequency-band electromagnetic waves, and the electromagnetic shielding effect is good. And low-frequency electromagnetic wave shielding effectiveness-mechanical bearing capacity integrated construction in special engineering can be realized.

The application discloses a production method of a BOPP matte type electrostatic adsorption film, and the electrostatic adsorption film comprises a matte treatment layer, an electrostatic adsorption layer, a BOPP base layer, an anti-fingerprint layer and a self-repairing layer; the matte treatment layer is composed of polymethyl methacrylate, silica matt, polystyrene, acrylic ester copolymer, antistatic agent, ultraviolet absorber and lubricant; the electrostatic adsorption layer is composed of PA6, polyvinyl alcohol, carbon black nanoparticles, polyaniline, surfactant and coupling agent; and the BOPP base layer is composed of isotactic polypropylene, atactic polypropylene, acrylonitrile-butadiene-styrene copolymer, nano titanium dioxide, maleic anhydride grafted polypropylene and ethylene-octene copolymer. The BOPP film with good matte effect and electrostatic adsorption can be prepared.

The application belongs to the technical field of refractory materials, and particularly relates to high thermal shock resistance amorphous refractory material and a preparation method thereof. The high thermal shock resistance amorphous refractory material comprises corundum, magnesium aluminate spinel, a binder, nano micropowder, quartz glass powder, polyaluminum phosphate and sodium tripolyphosphate. The high thermal shock resistance amorphous refractory material is prepared by using high-alumina cement, aluminum sol and silicon micropowder to jointly form the binder, so as to reduce the overall expansion rate of the material, improve the interface bonding strength and cracking resistance in the thermal shock process; the aluminum sol with low acid and high solid content is prepared by using a hydrothermal method, so as to reduce the thermal expansion difference, buffer thermal shock, and further improve the thermal shock resistance of the amorphous refractory material; the nano micropowder is composed of nano carbon black, nano cerium oxide and nano aluminum oxide, and through the synergistic mechanism of thermal conduction regulation, grain refinement and interface strengthening, the thermal shock resistance of the amorphous refractory material is significantly improved.

The invention discloses a composite LLDPE polyethylene anti-burn PTE tube, and relates to the field of high polymer material plastic products. The composite LLDPE anti-burn PTE tube is of a three-layer co-extrusion integrated thin-wall high-strength structure with linear low density polyethylene as a unified base material, and sequentially comprises an inner reinforcing layer with a smooth inner wall, a corrugated middle heat insulation layer and a high-reflection outer protection layer from inside to outside, the three-layer structure realizes interlayer gapless tight combination through raw material particle size matching and melt flow rate regulation and control. According to the composite LLDPE polyethylene anti-burn PTE pipe, the inner layer, the middle layer and the outer layer have functional positioning and are accurate in raw material ratio design, the inner strengthening layer is modified by nano carbon black, the corrugated middle heat insulation layer is reinforced by aluminum oxide ceramic filler, and the high-reflection outer protection layer is designed by light scattering of titanium dioxide white master batch, so that the pipe integrates wear resistance, heat insulation, burn prevention and weather resistance; the limitation that a traditional polyethylene pipe is single in function is broken through, and the fluid conveying requirement under the severe environment is met.

The invention provides a method for preparing ultra-fine tungsten powder with ultra-low carbon content based on carbon thermal reduction of tungsten oxide, which comprises the following steps: 1) by using tungsten oxide as a tungsten source, carrying out ball milling and refining on the tungsten oxide to enable the particle size D50 of the tungsten oxide to be less than 1 mu m; 2) uniformly mixing the ball-milled tungsten oxide with nano carbon black with the particle size of 100-200 nm, and carrying out carbon thermal pre-reduction at 950-1050 DEG C in an inert atmosphere under the carbon-deficient condition that the molar ratio of the carbon black to the tungsten oxide is 1.0-1.7; and (3) the pre-reduced tungsten powder is placed in a wet hydrogen atmosphere with the dew point ranging from-20 DEG C to 20 DEG C, further treatment is conducted at the temperature ranging from 750 DEG C to 850 DEG C, deep decarburization is achieved, and residual oxygen is synchronously removed. The purity of the ultra-low-carbon-content superfine tungsten powder reaches 99.9% or above, the particle size distribution is smaller than 100 nm, the carbon content is smaller than 50 ppm, and the carbon impurity control level of the hydrogen reduction process is achieved in the carbon thermal reduction process.

The invention discloses shielding concrete capable of pumping electromagnetic waves of 20 m or above and a preparation method of the shielding concrete, and belongs to the technical field of electromagnetic shielding concrete preparation. The electromagnetic wave shielding concrete capable of being pumped by 20 m or above is composed of water and a dry material, the dry material is composed of, by mass, 20%-30% of cement, 2%-6% of an admixture, 0.4%-1% of nano carbon black, 3%-10% of steel fibers, 55%-70% of magnetic aggregate and 1%-1.6% of a water reducing agent, and the mass ratio of the water to the cement is 0.45-0.72. The electromagnetic shielding material can form wide-frequency-band electromagnetic shielding for electromagnetic waves with the frequency band of 1-18 GHz, the high-frequency shielding effect is greatly improved, the mechanical property reaches C60 strength, the pumping requirement of site construction is met, the pumping height can reach 20 m or above, and the application requirement of special protective engineering is met.

The invention discloses high-performance electromagnetic shielding concrete and an electromagnetic shielding chamber construction method, and belongs to the technical field of cement-based composite shielding material preparation. The high-performance shielding concrete is prepared from the following components in percentage by mass: 0.2%-1% of nano carbon black, 30%-50% of magnetic iron ore, 10%-30% of iron ore concentrate sand, 10%-25% of cement, 2%-10% of steel fiber, 0.2%-0.5% of a water reducing agent, 0.1%-0.5% of a dispersing agent and 4%-15% of water. According to the invention, the high-conductivity nano carbon black, the high-magnetism nickel-containing steel fiber and the conductive and magnetic continuous grading aggregate are utilized to construct a graded conductive and magnetic enhanced network structure, so that the electromagnetic field shielding and mechanical strength of the concrete material are synergistically improved; the shielding interface board is utilized to ensure tight connection between the electromagnetic shielding concrete and the component, and the shielding effectiveness is improved.

The invention discloses polyaniline and maleic anhydride synergistically modified nano carbon black as well as a preparation method and application thereof. The preparation method comprises the following steps: blending an aniline monomer, maleic anhydride and nano carbon black in a mass ratio of (0.5-2): (0.1-0.5): 1 in an acidic aqueous solution, adding an oxidizing agent, and reacting at 0-5 DEG C for 8-12 hours to obtain the polyaniline and maleic anhydride synergistically modified nano carbon black. According to the invention, polyaniline and maleic anhydride are adopted to carry out synergistic modification on nano carbon black, a coating layer is formed by in-situ polymerization of polyaniline on the surface of carbon black, meanwhile, a ring-opening product of maleic anhydride and hydroxyl on the surface of carbon black form an ester bond, and the ring-opening product of maleic anhydride and amino on a polyaniline molecular chain form amido bond bridging, so that ternary synergistic covalent modification is realized. The structure effectively improves the dispersion stability of the nano carbon black, so that the nano carbon black is more uniformly dispersed in a polymer matrix, and the interface bonding is tighter.

This invention discloses a synergistic dual-modified nano-carbon black of PEI and 1-carboxymethyl-3-methylimidazolium, its preparation method, and its application. The preparation method of the modified nano-carbon black includes the following steps: reacting oxidized nano-carbon black, PEI, and 1-carboxymethyl-3-methylimidazolium compounds in a solvent at a mass ratio of 10:(5~20):(2~10) at 60~120℃ for 5~8 h to obtain nano-carbon black synergistically modified by PEI and 1-carboxymethyl-3-methylimidazolium compounds. This invention, through the dual modification of PEI and ionic liquids, constructs a multilayer structure rich in amino and ionic liquid groups on the surface of nano-carbon black, greatly enhancing its interaction with the polar groups of polymers and solving the problem of easy agglomeration of nano-carbon black in polymers.

This invention relates to the field of polymer composite materials, and discloses a high-toughness, high-light-shielding polycarbonate composite material and its preparation method, solving the technical problem that existing polycarbonate materials cannot simultaneously achieve high light-shielding properties and high impact toughness. By constructing a polyurethane elastic composite coating containing nano-carbon black in situ on the surface of continuous glass fibers, the coating acts as a microscopic light-shielding network and an interfacial stress buffer layer. This not only effectively blocks light transmission and imparts high optical density to the material, but also passivates crack tips and absorbs impact energy. As a result, the composite material maintains high rigidity while possessing excellent notched impact toughness and a high-gloss black appearance without loose fibers.

The invention discloses a weather-proof silane crosslinked polyethylene insulated power cable production process, which comprises the following steps: S1, preparing nano carbon black composite master batch to realize uniform dispersion of carbon black in a matrix; s2, solid-phase preparation of a silane grafted base material: preparing a silane grafted polyvinyl base material under a low-temperature condition by adopting an ultraviolet light-assisted solid-phase grafting technology; s3, performing catalytic mixing and low-temperature extrusion, and then coating the surface of a conductor with the base material through a low-temperature extrusion process to form an insulated wire core; s4, performing staged controllable humidity crosslinking, and completing hydrolysis and condensation reactions by accurately controlling humidity and temperature; and S5, performing post-curing treatment, and finally performing heat treatment and segmented cooling, and screening to obtain a finished cable. According to the process, through a nano carbon black dispersion technology, energy field auxiliary grafting and a precisely-controlled crosslinking process, the crosslinking uniformity and weather resistance of the cable are remarkably improved, so that the product has excellent mechanical strength, electrical insulation performance and environmental stress cracking resistance, meanwhile, the production energy consumption is reduced, and the green manufacturing requirement is met.

This invention discloses a ball milling method for preparing long afterglow materials using carbon-containing waste liquid. The method includes: mixing a carbon-containing waste liquid with a matrix material to obtain a mixture, wherein the carbon-containing waste liquid includes small-sized carbon, which is at least one of carbon nanotube fragments, graphene fragments, and nano-carbon black fragments; the matrix material is boric acid or borate crystals. The method for obtaining the carbon-containing waste liquid includes: adjusting the pH of the carbon-containing waste liquid to 5-6, centrifuging, and collecting the supernatant; ball milling the mixture, and drying to obtain the long afterglow material. The long afterglow material contains 0.1-2 wt% small-sized carbon, the ball milling time is at least 4 hours, and the ball mill rotation speed is 300-800 r / min. This invention is the first to propose the direct preparation of long afterglow materials using carbon-containing waste liquid as raw material, realizing the high-value resource utilization of carbon-containing waste liquid.

The application discloses a kind of carbon black nanofluid for solar latent heat energy storage device, nanometer reinforced composite phase change material and preparation method, carbon black nanofluid is as the basic working fluid of solar latent heat energy storage device, by weight percentage, including: carbon black nanoparticles 4.5~8.0%, thionyl chloride 5.0~9.0%, dibutyl tin dilaurate 3.0~5.0%, toluene 9.0~15.0%, triethylamine 5.5~10.0%, surfactant 4.0~8.0%, deionized water 45.0~50.0%.Nanometer reinforced composite phase change material is as the energy storage material of solar latent heat energy storage device, by weight percentage, including: modified carbon black nanoparticles 20.0~35.0%, myristic acid 65.0~80.0%.The carbon black nanofluid of the application has better heat absorption and heat transfer capacity, and the nanometer reinforced composite phase change material has better heat storage capacity.

The invention relates to the technical field of nano materials, in particular to a preparation method of high-dispersion nano carbon black slurry. The preparation method comprises the following steps: firstly, adding to-be-dispersed nano carbon black into a dispersion medium, and stirring for preliminary wetting and pre-dispersion; feeding the carbon black slurry into an ozone contact reactor, introducing ozone-containing gas, and carrying out surface oxidation modification; finally, the carbon black slurry subjected to ozone oxidation pretreatment is conveyed into a high-shear disperser, the carbon black slurry subjected to ozone oxidation pretreatment is subjected to strong crushing and dispersion at the rotor rotating speed of 1000-15000 rpm and the shear rate of 1-1, the high-dispersion nano carbon black slurry is prepared, the dispersed carbon black is smaller in particle size and higher in dispersion stability, and the carbon black is more uniform in dispersion. And the conductive performance of the product is better. The problems that existing nano carbon black color paste is difficult to disperse and poor in stability are solved, and the nano carbon black color paste has wide application prospects.

The invention relates to the technical field of road engineering materials, and discloses tire multi-element solid waste modified asphalt and a preparation method thereof. The tire multi-element solid waste modified asphalt is prepared from the following raw materials in parts by weight: 900 to 1300 parts of asphalt, 80 to 120 parts of waste tire rubber, 20 to 30 parts of modified nano zinc oxide and 60 to 80 parts of modified nano carbon black, 20-60 parts of a resin material; the waste tire rubber material is obtained by mixing waste tire rubber powder and a softening agent according to the weight ratio of (2-3): 1; the waste tire rubber powder is obtained by crushing waste tires, and the particle size of the waste tire rubber powder is 0.45-5.60 mm; the modified nano-zinc oxide is obtained by modifying nano-zinc oxide with palmitic acid and cellulose nanofibers; the modified nano carbon black is obtained by modifying nano carbon black with polypropylene glycol. According to the tire multi-element solid waste modified asphalt and the preparation method thereof, carbon black, resin, zinc oxide, a softening agent and other multi-element solid waste materials recycled in tire production are effectively utilized, and the problem that rubber asphalt prepared from rubber powder prepared from pure waste tires is insufficient in comprehensive performance is solved.

The invention relates to the technical field of functional film materials, in particular to a high-transmittance carbon black-based antistatic film material and a preparation method thereof. The method comprises the following steps: preparing a modified water-based nano carbon black dispersion liquid, activating the surface of carbon black through EDC / NHS, and grinding through a sand mill; preparing antistatic resin, namely mixing waterborne polyurethane with an antistatic agent, adding a wetting and leveling agent, and filtering to obtain the antistatic resin; and finally, mixing the modified water-based nano carbon black dispersion liquid, antistatic resin and a curing agent, and uniformly stirring to obtain the thin film material. The antistatic agent, the waterborne polyurethane resin and the modified carbon black are synergistically compounded, so that the antistatic performance of the material is remarkably improved, the surface resistance and the volume resistance are reduced, the negative influence of the carbon black on the light transmission of the material is effectively relieved, and the unification of high light transmission and stable antistatic performance is realized.