20 results about "Aerogel" patented technology

The invention belongs to the technical field of intelligent high-molecular materials, and relates to a preparation method and an application of a high-strength oriented polyvinyl alcohol hydrogel. Thepreparation method of the high-strength oriented polyvinyl alcohol hydrogel comprises the following steps: adding deionized water to dissolve polyvinyl alcohol powder, carrying out freeze-thawing circulation, pre-stretching orientation and freeze drying to obtain a polyvinyl alcohol aerogel, and immersing the obtained polyvinyl alcohol aerogel in an aqueous solution of a salt having a Hofmann effect or an aqueous solution of a salt capable of forming a coordinate bond or an aqueous solution of a polycarboxy compound capable of forming a hydrogen bond with polyvinyl alcohol to prepare the high-strength oriented polyvinyl alcohol hydrogel. The high-strength oriented polyvinyl alcohol hydrogel has a tensile strength reaching up to 41.0 MPa, an elongation at break reaching up to 228.0% and atoughness reaching up to 49.94 MJ/m<3>, also has antibacterial and anticorrosive effects and a free radical scavenging effect, and is of great significance to broaden the application of the polyvinylalcohol hydrogel in artificial muscles and cartilages, tissue engineering and other biomedical materials.

The invention discloses high infrared shielding rate thermal insulation paint. The paint is prepared from substrate paint, SiO2 aerogel, hollow glass beads with an indium and antimony co-doped type tin oxide coating, surfactant, a curing agent and auxiliaries; in the tin oxide coating, the doping ratio of indium ranges from 0.5 mol% to 3 mol%, and the doping ratio of antimony ranges from 6 mol% to10 mol%; the particle size of the hollow microspheres ranges from 1,000 meshes to 2,000 meshes; the surfactant is anion and amphoteric mixed surfactant; the auxiliaries comprise a dispersing agent, awetting agent, a defoaming agent and a flatting agent. The paint has an infrared light shielding barrier forming a large specific surface area, and can effectively insulate heat and absorb and shieldthe infrared light within a wide wavelength range. The paint prepared through a method has the good homogeneity, the SiO2 aerogel can be uniformly dispersed in the paint system, and then the obtainedcoating has the uniform and stable heat insulation and infrared light shielding performance.

The invention discloses a preparation method of a graphene aerogel epoxy resin composite fracturing proppant. The preparation method comprises the following steps: 1, dropping a certain concentrationof graphene oxide suspension in a frozen mixture of petroleum ether and methyl silicone oil to form graphene oxide droplets; 2, moving the graphene oxide droplets in a freeze dryer for freeze drying to obtain graphene oxide aerogel pellets; 3, performing high-temperature thermal reduction on the graphene oxide aerogel pellets into graphene aerogel pellets; 4, introducing the graphene aerogel pellets into an epoxy resin and curing agent mixture for vacuum compounding and then heating and curing to form the grapheme epoxy resin composite fracturing proppant; the pellet type fracturing proppant made by graphene aerogel and epoxy resin compounding has the advantages of low density and high compression strength and can significantly improve the fracturing and yield-increasing efficiencies.

The invention discloses a super heat insulation coating loaded with nano titanium dioxide. The super heat insulation coating is prepared from the following raw materials in parts by weight: 38-42 parts of ethyl orthosilicate, an appropriate amount of ethanol and deionized water, 0.1-0.2 part of maleic anhydride, 0.7-0.9 part of hexamethyldisilazane, 0.4-0.5 part of 3-aminopropyl triethoxysilane, 0.4-0.5 part of nano titanium oxide, 70-75 parts of E-12 epoxy resin, 9-12 parts of ethylene glycol diglycid ether and 7-7.5 parts of triethanolamine. The coating disclosed by the invention uses silicon dioxide aerogel and has a super heat insulation property; by loading nano titanium dioxide to the aerogel, the ageing process of the aerogel is retarded, and the service life of the aerogel is prolonged; and by using hexamethyldisilazane to perform modification, the hydrophilic property of the aerogel is improved, and the phenomenon that the aerogel is broken up and degraded by absorbing water is reduced.

A method for packing and/or mixing particulate materials, e.g., aerogel particles, includes combining materials having different particle sizes and applying a negative pressure differential in the presence of a sound field. A negative pressure differential in the presence of vibration also can be used. The method increases mixing and packing density.

The invention provides a preparation method for preparing a nylon porous material on a large scale. The preparation method is characterized in that the selected raw material is nylon, the preparation process is simple and efficient, water in the production process can be repeatedly utilized, and the preparation method conforms to the environment-friendly concept. The nylon is dissolved by using anhydrous formic acid, and a sodium bicarbonate solution is added for foaming to obtain the porous material which is of a three-dimensional porous structure and has excellent performance. The prepared nylon porous material has the advantages of being low in density, high in porosity, low in heat conductivity, high in specific surface area and the like. Compared with aerogel and other porous materials, the preparation method for preparing the porous material is simple, and low-cost large-scale production can be achieved. The method can be used in heat preservation, heat insulation, marine petroleum pollution treatment, catalyst carriers, sound absorption and shock absorption buffer materials and other fields, and has wide application prospects.

The invention provides a high-drawing-resistance aerogel composite material and a preparation method thereof, and relates to the field of aerogel. The preparation method comprises the following steps: 1, a fiber composition serves as a core material, fiber cloth or fiber gridding cloth is laid on the upper face and the lower face of the core material, and the fiber cloth or the fiber gridding cloth laid up and down and the middle core material are sewn up and down through fiber lines to form three-dimensional woven fibers. and 2, the three-dimensional woven fibers obtained in the step 1 are taken as a reinforced base material and soaked in sol, and gelling, aging, modifying and drying are carried out to obtain the high-drawing-resistance aerogel composite material. Or the fiber composition is used as a reinforcing base material and is gelled, aged, modified and dried to obtain an aerogel composite material, and then fiber cloth or fiber gridding cloth is sewn on the upper face and the lower face of the aerogel composite material to form the final high-drawing-resistance aerogel composite material. According to the method, the anti-drawing strength of the aerogel material is remarkably improved, and the anti-drawing strength of the aerogel composite material is improved to 0.5 MPa from 0.08 MPa.

The invention discloses an aerogel felt anti-dusting coating layer which is composed of the following components in parts by weight: 30%-60% of a film forming matter, 35%-50% of water, 5%-25% of a filler and 0.01%-5% of a wetting agent. The anti-dusting coating layer is a water-based coating, is safe and environment-friendly, is simple and convenient in formula components, is compounded with aerogel, does not need substances such as a binder and a hot melt adhesive, is economical and practical, has the vibration mass loss rate of 0.05-0.07% after the aerogel felt and the coating layer, and has the heat conductivity coefficient of about 0.02 w/m*K after the aerogel felt and the coating layer.

The invention relates to the field of water purification, and discloses an oily water purifying agent and a preparation method thereof. The method comprises the following steps: mixing butyl titanate, carbon nanotubes, brucite fibers, endellite fiber nanotubes, anhydrous ethanol and toluene to prepare a solution A; mixing anhydrous ethanol, acetate acid gracial and water to prepare a solution B; dropwise adding the solution B to the solution A to prepare a sol solution; ageing the sol solution, adding anhydrous ethanol to the sol solution in order to carry out solvent displacement, adding n-hexane to the sol solution in order to carry out solvent displacement, carrying out separation to remove n-hexane in order to obtain wet gel, and hydrophobically modifying the wet gel; and drying the hydrophobically modified wet gel to prepare composite aerogel, and processing the composite aerogel to form granules or blocks in order to obtain the oily water purifying agent. The oily water purifying agent has the advantages of high oil removal efficiency, no recovery of the purifying agent, and no secondary pollution to water.

The invention relates to thermal insulation paint used on glass, belonging to the technical field of thermal insulation paint. The thermal insulation paint aims at solving the problems that in the prior art, the thermal insulation paint for glass is barely satisfactory in the aspects of absorbance, reflection and transmittance of light rays, meanwhile, such aspects as abrasive resistance, adhesive force and the like have no prominence either, the environmental protection performance is poor, and the requirement for existing green production cannot be met. The thermal insulation paint used on the glass is prepared from the following components in parts by weight: 8 to 30 parts of a SiO2 aerogel water dispersion paste, 10 to 20 parts of nanometer ATO aqueous dispersion liquid, 26 to 50 parts of aqueous acrylic resin, 25 to 90 parts of aqueous polyurethane resin and an adjuvant. The thermal insulation paint used on the glass is safe in use and environment-friendly, does not cause destruction to the environment, is simple in construction, and has excellent waterproof performance and thermal insulation performance.

A structure for blocking heat transfer through a thermal bridge of a building, includes an inner visual glass curtain wall, an outer visual glass curtain wall, an indoor metal frame, an outdoor metal frame, an outer decorative metal cover, a first thermal break strip, a second thermal break strip, a first nylon thermal break block and a second nylon thermal break block. The first thermal break strip, which is located among the outdoor metal frame, the indoor metal frame, the first nylon thermal break block and the second nylon thermal break block, is an aerogel thermal insulation blanket. The second thermal break strip, which is located among the indoor metal frame, the second nylon thermal break block, the outer decorative metal cover and the inner visual glass curtain wall, is another aerogel thermal insulation blanket.

The invention discloses application of organic aerogel as an air purification material, and belongs to the technical field of air treatment. The organic aerogel material is prepared by the steps of 1)preparation of a gel emulsion and 2) polymerization of the gel emulsion. The organic aerogel material as the air purification material is used for absorbing VOCs and adsorbing PM2.5 and/or PM10, hasa wide application range, is multifunctional and integrates absorption with adsorption; when the organic aerogel material is used as the air purification material to treat pollutants, the working efficiency is high, the organic aerogel material is washed and dried after saturation to be recycled, and the recycling method is simple; the organic aerogel material as the air purification material hasgreat competitiveness on the market due to the recyclability; the organic aerogel material can serve as a hydrophobic material that is not liable to moisture absorption during use.