132 results about "Carbon black nanoparticles" patented technology

The invention provides an ultrahigh molecular weight polyethylene/ carbon black nanometer composite fiber and its preparation method. The method comprises: putting ultrahigh molecular weight polyethylene, carbon black nanoparticles and an anti-oxidant into a solvent, conducting high speed shearing and stirring by an emulsifying machine so as to be uniformly mixed, thus obtaining a mixture; then raising the temperature of the mixture to 100-120DEG C, controlling the temperature raising speed at 2-5DEG C/min, and carrying out thermal insulation for 1-4h so as to obtain a spinning solution, then employing a conventional ultrahigh molecular weight polyethylene fiber production method for preparing an ultrahigh molecular weight polyethylene/carbon black nanometer composite fiber. The ultrahigh molecular weight polyethylene/carbon black nanometer composite fiber prepared in the invention effectively improves the hear resistance and creep resistance of ultrahigh molecular weight polyethylene fibers, reduces fiber production cost, and extends the application scope of fibers. Meanwhile, the preparation method provided in the invention has concise process route and is easy to operate.

The invention relates to a nano-sized carbon black heat dissipating paint and a preparation method thereof. The paint is composed of waterborne resin, nano-sized carbon black, a dispersant of nano-sized carbon black, a waterborne leveling agent, a waterborne anti-foaming agent, and a solvent. The materials are sufficiently mixed through ball-milling, such that the heat dissipating paint is prepared. The heat dissipating paint comprises components of, by mass: 30 to 60 parts of waterborne resin, 3 to 15 parts of nano-sized carbon black, 0.5 to 2.5 parts of the dispersant of nano-sized carbon black, 0.5 to 1.5 parts of the waterborne leveling agent, 0.5 to 1.5 parts of the waterborne anti-foaming agent, and 30 to 40 parts of the solvent. The heat dissipating paint can be directly painted on heat dissipating apparatuses for increasing the heat dissipating areas of the apparatuses and improving the heat dissipating effects. The nano-sized carbon black heat dissipating paint has characteristics of highly efficient, convenient and environment friendly.

The invention relates to an iron and nitrogen co-doped carbon oxygen reduction catalyst. The preparation method comprises steps: a carbon carrier is dissolved in an organic solvent, ultrasonic dispersion for being uniform is carried out, soluble iron salt is added under a stirring condition, and after uniform mixing, a mixed solution is obtained; the mixed solution is transferred to a reaction kettle, a reaction is carried out under the stirring condition, the reaction solution after the reaction is subjected to solid-liquid separation, washing and drying to obtain a solid material, the solidmaterial and a nitrogen source are mixed and grinded, and a pyrolysis precursor is obtained; and the pyrolysis precursor is roasted in an inert atmosphere to obtain the iron and nitrogen co-doped carbon oxygen reduction catalyst, wherein the carbon carrier is Ketjen black nano carbon black particles. Compared with the prior art, the method has the advantages of high oxidation reduction catalytic activity, good electrochemical stability, simple and controllable preparation method, short period, rich raw material reserves, low cost, capability of realizing large-scale production and the like.

The invention discloses a morphology-controllable and color angle-independent photonic crystal particle and its preparation method. The preparation method comprises the following steps: mixing Fe3O4 nanoparticles, carbon black nanoparticles, graphene nanoparticles or a mixture of the Fe3O4 nanoparticles, carbon black nanoparticles and graphene nanoparticles with an emulsion containing monodisperse colloidal microspheres; printing a mixture obtained onto a superhydrophobic substrate by a spraying, dispensing or inkjet mode so as to form emulsion droplets with diameter being 11microns -1.6 mm; and drying to obtain the ellipsoidal color angle-independent colored photonic crystal particle with its length-diameter ratio being controllable. The photonic crystal particle is colourfast and environmentally friendly and has a wide application prospect in fields of pigment, display, sensing and the like.

The invention discloses an earthed anticorrosive conductive paint and a preparation process thereof, relating to the field of earthed materials. The paint comprises the following components by mass percent: 10% to 15% of nanometer carbon black, 5% to 10% of colloidal graphite, 20% to 30% of a flexible epoxy resin, 0% to 10% of an organic silicone resin, 30% to 50% of a diluting solvent, 10% to 15% of a curing agent and 2% to 3% of a plasticizer; the sum of the mass percent of every component is 100%. The paint has high conductivity and good anticorrosive performance and closeness, which is favorable for anticorrosion, has flexibility, which is favorable for increase of a service life, and has high temperature resistance, good thermal stability and capacity of enduring impact of heavy current; the paint employs a two-component form and can improve cross-linking properties and mechanical properties of a resin after the paint is cured; the paint is applicable to a variety of earthing such as earthing for lightning protection, working earthing, protective earthing and the like having anticorrosive requirements.

The invention relates to a modified carbon raw material for a carbon-containing refractory material and a preparation method thereof. The preparation method comprises the following steps: adding 5-30 wt% of a mixture of simple substance silicon powder and silicon dioxide micropowder into flake graphite fine powder or nano carbon black or multiwall carbon nanotubes; evenly stirring to obtain mixedpowder; and then, treating the mixed powder in a carbon-buried atmosphere at 800-1400 DEG C for 1-3 hours, wherein the molar ratio of the simple substance silicon powder to the silicon dioxide micropowder is (0.5-3):1. The invention has simple technique, and ceramic coatings with different thicknesses can be formed on the surface of the carbon raw material by regulating the molar ratio of the simple substance silicon powder to the silicon dioxide micropowder and regulating the percentage of the simple substance silicon powder and silicon dioxide micropowder in the carbon raw material. The oxidation resistance of the modified carbon raw material is greatly enhanced; and when being added into the carbon-containing refractory material, the modified carbon raw material can enhance the oxidation resistance of the carbon-containing refractory material, and simultaneously, the ceramic coating on the surface prevents the modified carbon raw material from reacting with the antioxidant in the carbon-containing refractory material, thereby enhancing the comprehensive properties of the carbon-containing refractory material.

The invention provides a matte TPO skin material with low processing viscosity as well as a preparation method and application of the TPO skin material. The TPO skin material is formed by filling a thermoplastic polyolefin (TPO) with nanoparticles, wherein the mass ratio of the TPO to the nanoparticles is (90-99.5):(0.5-10); and the nanoparticles include one or more selected from the group consisting of multi-layer graphene, carbon nanotubes, monodisperse polystyrene microspheres, manganese oxide nanowires, iron tetroxide nanoparticles, fumed silica, and nano carbon black particles. The nanoparticles are packed in the TPO, so that the free volume of the polymer is increased, and the density of entanglement points is reduced; at the same time, interface slip occurs between the nanoparticlesand the polymer, the interface slip acts as a lubricant to reduce the viscosity of the system, so that the process temperature of operation such as mixing, calendaring and extrusion in the material processing process is reduced; the nanoparticles play a matting effect; the added nanoparticles have little effect on the mechanical properties of the material and improves the friction-resistant coefficient; and the TPO skin material provides guidance for industrial production.

The invention discloses a preparation method of oily self-dispersing nano carbon black and belongs to the field of fine chemical industry. A silane coupling agent containing carbon-carbon double bonds is grafted on the surface of carbon black, polymerizable groups of the silane coupling agent are utilized to copolymerize with other oily monomers, the surfaces of carbon black particles are coated with a layer of polymer having both dispersing and stabilizing effects, and then the objective of self-dispersing in oily solvents is achieved.

The invention discloses a high-purity high-density silicon carbide ceramic and a preparation method thereof, silicon carbide ceramic powder with different particle sizes is used as a main raw material, graphite powder and nano carbon black are used as binders, resin is used as a binder, a spray granulation process is used for uniform mixing. The preparation method comprises the following steps: carrying out dry pressing molding, isostatic pressing molding or casting molding to obtain a ceramic green body, drying and curing the green body, carrying out primary high-temperature purification heattreatment and secondary reaction siliconizing heat treatment, and finally carrying out surface treatment to obtain the high-purity high-density silicon carbide ceramic. The silicon carbide ceramic prepared by the process is high in purity, the content of various metal impurities is lower than 200 ppm, the density of the material reaches 99% or above, and the silicon carbide ceramic can be widelyapplied to the application fields of photovoltaics, LEDs or semiconductors with high purity and strength requirements.

The invention discloses electrostatic self-assembly carbon nano tube/nano-carbon black composite mortar. Raw materials of the mortar comprise cement, silica fume, electrostatic self-assembly carbon nano tubes/nano-carbon black, a water reducing agent, sand and water. The minimum static resistivity of the mortar reaches 0.45 omega*m, the range of an absolute value of the resistivity change rate is 3.3%-22.1%, the change range of stress sensitivity is 0.40%-2.69%/MPa, and the change range of the strain sensitivity is 105-704. Compared with the prior art, the electrostatic self-assembly carbon nano tube/nano-carbon black composite mortar and the preparation method thereof solve the problem about dispersion of nanofiller in the mortar very well, and the carbon nano tubes and the nano-carbon black have the collaborative conductive effect, so that the mortar can acquire very low static resistivity and has excellent pressure-sensitivity by the aid of a small mixing amount of electrostatic self-assembly carbon nano tubes/nano-carbon black.

The invention relates to a decorating interior sound insulation material, which is prepared from the following raw materials in parts by weight: 42-56 parts of thermoplastic phenol resin, 20-25 parts of expanded vermiculite, 4-6 parts of polystyrene foamed plastic, 2-3 parts of a silane coupling agent, 1-1.5 parts of nano carbon black, 8-10 parts of polymethyl methacrylate, 0.1-0.2 part of an antioxidant, 0.1-0.2 part of a foaming agent, 0.2-0.3 part of magnesite, 2-3 parts of silica sol with the solid content of 10%-15%, 20-40 parts of 100-200-mesh montmorillonoid, 10-12 parts of a water-based polyurethane emulsion with the solid content of 8%-10%, 10-20 parts of collagenous fiber, 20-30 parts of waste felt and 2-5 parts of an assistant. The prepared expanded vermiculite-polyurethane composite emulsion-wrapped thermoplastic phenol resin nonwoven sound insulation material is light in weight, small in thickness and good in sound insulation effect, and has a good market prospect.

A dye-sensitized solar cell (DSSC), anode thereof, and method of manufacturing the same are disclosed. The anode has a titanium dioxide layer mixed with a desired ratio of carbon black nanoparticles to increase the conductivity of the anode. Thereby, the conversion efficiency of the solar energy to electricity for the DSSC is effectively improved.

The invention discloses a bio-based water-based anticorrosive force-sensitive conductive coating for bridge building protection and health monitoring, which comprises a bio-based resin, an assistant,deionized water, a cosolvent, a pigment and a conductive filler, and the conductive filler comprises nano carbon black, carbon nanotubes, Mxene, silver nanowires or nickel nanowires. Bio-based resin is used as a main film forming matter, so that the production of the product is environmentally friendly and in line with sustainable development. The conductive filler is added, so that the prepared bio-based water-based anti-corrosion force-sensitive conductive coating not only has corrosion resistance, but also has conductivity and sensitive sensitivity, thereby being used for stress detection or bridge deformation detection.

The invention provides a graphene/white carbon black composite material. The graphene/white carbon black composite material comprises a graphene material and white carbon black, wherein the white carbon black is grafted on lamellas of the graphene material through chemical bonds. The graphene/silane coupling agent/white carbon black composite material with a novel structure is obtained by bondingthe graphene material and the white carbon black through chemical bonds. In the composite material provided by the invention, the graphene material and the white carbon black are interspersed, mutualagglomeration can be inhibited, and white carbon black nanoparticles are uniformly compounded and grafted on the surfaces of the lamellas of the graphene material, so the graphene material can keep abasic lamellar structure and maintains good single-layer dispersity in the composite material, and the material is a nano-scale highly-dispersed material. Meanwhile, the white carbon black on the surface of the graphene can improve the rigidity of the graphene lamellas, prevent the graphene from curling and folding due to high-temperature shearing in a rubber mixing process and improve the dispersity of the graphene in a rubber matrix.

The invention discloses a vegetable oil-based polyurethane coated fertilizer and a preparation method thereof. The vegetable oil-based polyurethane coated fertilizer comprises fertilizer particles anda vegetable oil-based polyurethane coating, wherein the modified vegetable oil-based polyurethane coating comprises an inner layer coating, a middle layer coating and an outer layer coating which aresequentially coated from inside to outside; the inner layer coating and the outer layer coating are prepared from a vegetable oil-based polyurethane coating solution, and the middle layer coating isprepared from a vegetable oil-based polyurethane coating solution and nano carbon black. According to the fertilizer and the preparation method disclosed in the invention, nano carbon black which is low in surface energy, low in price and easy to obtain is doped into a plant oil-based polyurethane coating to construct a micro-nano super-hydrophobic coating, so that the plant oil-based polyurethanecontrolled-release fertilizer with an ultralow coating rate is prepared, and the nutrient content of the controlled-release fertilizer per unit mass is increased; the purposes of prolonging the controlled release effect of the coated fertilizer and reducing the dosage of the coating material can be achieved, the cost is relatively low, and the environment-friendly effect is achieved.

The invention relates to a polyimide composite material and a preparation method and application thereof. The polyimide composite material comprises a polyimide matrix and a carbon fluoride material distributed in the polyimide matrix; the carbon fluoride material comprises any one or a combination of at least two of graphene fluoride with the plane size smaller than or equal to 10 [mu]m, fluorinated nano carbon black with the diameter smaller than or equal to 100 nm or fluorinated graphene quantum dots with the diameter smaller than or equal to 10 nm. The three carbon fluoride materials withspecific sizes are introduced into the polyimide matrix, so that the comprehensive performance of the polyimide can be effectively improved, and the polyimide has low dielectric constant, high light transmittance, low water absorption rate, high heat resistance and excellent mechanical properties.

The invention belongs to the field of buildings, and particularly discloses an energy-saving and environment-friendly light wallboard and a preparation method thereof. The light wallboard is preparedfrom the following components by weight: 10-28 parts of Portland cement, 10-25 parts of coarse aggregate, 20-40 parts of fine aggregate, 4-9 parts of silica fume, 3-5 parts of fiber, 2-7 parts of expanded perlite, 2-5 parts of water-based nano carbon black, 3-12 parts of slag powder, 4-6 parts of nano calcium carbonate, 70-120 parts of water and 2- 6 parts of an additive. The production cost is reduced, the wallboard molding strength is high, and compared with a traditional light wallboard, the light wallboard still has high strength and high waterproof performance in the long-term use process, a large amount of industrial waste residues are utilized as the raw materials, waste is turned into wealth, the purposes of saving energy and protecting the environment are achieved, and the compression resistance and the waterproof performance of the wallboard are improved.

The invention discloses a ceramic sponge material method for preparing Si3N4/SiC nanowire woven microspheres by a reverse template method. The method comprises the following steps: (1) taking silica sol and water-soluble carbon black as initial raw materials, and performing ultrasonic dispersion or ball milling to prepare uniformly dispersed mixed slurry; (2) adding a surfactant into the mixed slurry obtained in the step (1), and foaming to obtain ultra-stable foam; (3) drying the foam obtained in the step (2) so as to obtain a foam body formed by silica sol nano-particles and carbon black nano-particles; and (4) carrying out a carbon thermal reduction reaction on the foam body obtained in the step (3), thereby obtaining the nanowire woven microspheres. The invention provides a low-cost preparation method of the nanowire woven microspheres, the preparation process is simple, and expensive equipment is not needed.

The invention relates to a primer glue for a polyurethane structural adhesive, a preparation method and applications thereof, wherein the raw materials comprise, by mass, 10-20% of N-(beta-aminoethyl-gamma-aminopropyl)trimethoxysilane, 10-30% of epoxy group 3-(2,3-epoxypropoxy)propyltrimethoxysilane, 10-30% of acryloyloxy gamma-(methacryloyloxy) propyltrimethoxysilane, 19.5-69.5% of isopropanol and 0.1-1% of nanometer carbon black. The invention further provides a sliding rail for bonding a window body by using the polyurethane structural adhesive and the primer glue. According to the invention, by matching the polyurethane structural adhesive and the primer glue, the problems of easy shedding, glue breaking and the like of the polyurethane structural adhesive during the use are solved soas to prolong the service life.

The invention discloses a nano lamellar carbon black emulsion as well as a preparation method and application thereof. The preparation method comprises the steps that powdery carbon black is ground in the presence of a grinding agent and water and then dried, blocky carbon black is obtained, the blocky carbon black is mixed with a dispersing agent and water and then ground, and then the nano carbon black emulsion with the carbon black particle size not larger than 100 nm is prepared. The nano carbon black is converted into a lamellar structure from a spherical structure and has more excellent application performance than one-time grinding or cleavage, and dust pollution is avoided in the preparation process; and the processing equipment is conventional equipment, and a green manufacturing technology is provided.

The invention discloses a preparation method of modified white carbon black with chemical isolating structures and relates to application of a chemical isolating method to modifying white carbon black. By means of the characteristic that a saline coupling agent can be grafted to white carbon black and organic functional groups in the saline coupling agent can be reacted with special functional groups, modified white carbon black, the nanoparticles of the white carbon black of which are isolated by organic chain sections is prepared. The modified white carbon black can be uniformly dispersed stably in form of nanoparticles in a polymer substrate if being used as filler. The modification method is characterized in that by means of various methods, (I) or (II) structures are established among the nanoparticles of the white carbon black; and the nanoparticles of the white carbon black are isolated by means of the structure. The method can be directly realized by modifying the white carbon black by means of the coupling agent of the (I) or (II) structures; or can be indirectly realized by modifying the white carbon black by means of the coupling agent of the (III) structure and is then further reacted with the white carbon black modified by the saline coupling agent of an (IV) structure or a compound of an (V) structure. The formulae are as shown in the specification.