66results about How to "Enhanced skeleton structure" patented technology

The invention relates to a heat-resisting silica aerogel material and a preparation method thereof. SiO2 sol is prepared by adopting a sol-gel method, modified liquid is innovatively led to a supercritical drying process by ageing and solvent replacement through adopting a supercritical modification process, so as to obtain bulk aerogel which is high in mechanical strength and easy to process, and then the SiO2 aerogel of which linear contraction just is 5%, and the specific surface area can be up to 530m<2>/g after high-temperature treatment at 1000 DEG C can be obtained by high-temperature pretreatment at 800 DEG C and gas-phase modification of hexamethyldisilazane. By adopting the synthetic method, application of the SiO2 aerogel in high-temperature fields such as high-temperature catalysis, a catalyst carrier and high-temperature heat preservation and insulation is greatly facilitated.

The invention relates to a method of making carbon electrode of fluid electric-absorption desalter. It mainly mixes high specific surface area electrode carbon, nano carbon tube absorption material, carbon fiber, and nano carbon tube conductive material as well as adhesive polytetrafluoroethylene in a certain proportion and in a certain mode to make cold press molding and makes them into a double-faced electrode with a collector interlaid; the carbon electrode has good electric conductivity, small resistance, large electric capacity and low energy consumption; in addition, the modified carbon electrode has larger specific surface area and mesoporous porosity, therefore able to increase the absorption quantity of electrode to salt ions. The carbon electrode is especially applied to the fluid electric-absorption desalter and has higher desalting efficiency.

The invention relates to a method for preparing a zirconium boride-tungsten titanium carbide self-lubricating composite ceramic material. The material is prepared by adding (W, Ti) C solid solution and ZrO2 powder into a ZrB2 matrix, taking MgO as a sintering aid and performing hot pressing sintering on the materials under the vacuum environment. Matrix phase ZrB2 and enhanced phase (W, Ti) C form a good framework structure by introducing (W, Ti) C solid solution; and the ZrO2 is added so as to improve the toughness of the composite ceramic material by means of the phase change characteristic. The sintering temperature of the ZrB2 is reduced by adding the MgO sintering aid, so that a material with higher compactness is obtained. Self-lubricating function of the zirconium boride-tungsten titanium carbide self-lubricating composite ceramic material can be realized by using the chemical reaction of the composite material under the action of high temperature friction. The method has the characteristics of high hardness, high bending strength, high fracture toughness and the like and is suitable for preparing metal cutting tools, modules, nozzles and the like.

The invention relates to a lithium mine tailing lightweight ceramic sheet material manufacturing method. The sheet material comprises the following raw materials: 30 to 85 wt% of lithium mine tailing,10 to 60 wt% of kaolin, 3 to 10 wt% of powdered steatile, and 0.2 to 3 wt% of a foaming agent; the manufacturing method comprises the following steps: 1) taking raw materials for dry-method pulverizing, mixing the raw materials in proportion to obtain a mixture; 2) adding water to the mixture, and performing steps of stirring, granulating, drying, and sieving to obtain a pellet; and 3) placing the pellet in a crucible, sintering the pellet after spreading, and cooling the pellet to obtain the lightweight ceramic sheet material. The method utilizes lithium mine tailing to produce the lightweight ceramic sheet material, the lithium mine tailing contains a certain amount of lithium and iron elements, the sintering temperature is significantly reduced, the sintering cycle is shortened, energyconsumption can be saved, and production cost can be greatly reduced.

The invention discloses a durable high-modulus asphalt mixture based on hard asphalt particles. The asphalt mixture comprises 100 parts by mass of mineral aggregate and 5.3-5.7 parts by mass of asphalt, wherein the mineral aggregate comprises a limestone aggregate accounting for 96-98% of the total mass of the mineral aggregate, and limestone mineral powder accounting for 2-4% of the total mass of the mineral aggregate; and the asphalt is a compound of number 70 road petroleum asphalt and the hard asphalt particles. The asphalt mixture improves the gradation of the mineral aggregate, so that a coarse aggregate forms a good skeleton structure, and the shear property and the compressive property of the mixture are improved; and the property of asphalt adhesive cement in the mixture is improved by adding an appropriate amount of mineral powder, so that the surface of the mineral aggregate has appropriate asphalt membrane thickness. Therefore, the mixture is good in high temperature property, easy to compact, and excellent in fatigue resistance and durability; the capacity of a pavement for resisting damage of a track and the like can be improved if the mixture is used in a road middle surface course; the construction cost can be lowered; and the service life and the maintenance cycle of the pavement can be prolonged.

The invention discloses organic modified nanoporous silica aerogel and a preparation method thereof. The preparation method comprises the following specific steps: by using amino-containing siloxane as a starting silicon source and only using ethanol as a solvent, performing function compounding and chemical modification through an aldehyde group-containing organic function body, improving the intensity of an aerogel network, obtaining wet gel with hydrophobic properties, and finally performing atmospheric drying, thereby obtaining the modified nanoporous silica aerogel with good mechanical properties. The organic modified nanoporous silica aerogel provided by the invention has the advantages of simple preparation method and process, short flow, atmospheric drying technology, and great reduction in preparation cost of aerogel, and is favorable for realizing large-scale production and promoting the actual application.

The invention relates to a highly folded grapheme material and a preparation method thereof, belonging to the technical field of energy storage device electrode materials. The preparation method comprises the steps of carrying out pickling of a Fe3O4/ grapheme composite material, and drying the material to obtain the highly folded grapheme material. According to the preparation method, an iron oxide is selected as a template agent to construct highly folded grapheme, the redox reaction between the iron oxide and a carbon material can be used, a hole is etched at the surface of the grapheme, the specific surface area of grapheme is increased, more importantly, the channels of ion migration are increased, and the good super capacitor energy storage performance is realized.

The invention discloses a mochi bread premix powder with good freeze thawing stability, a mochi bread and a production thereof. The mochi bread premix powder comprises the following raw materials in percentage by weight: 10-30% of low gluten wheat flour, 1-20% of glutinous rice flour, 1-5% of whey powder, 30-60% of acetate modified starch, 1-15% of white granulated sugar, 0.1-3.0% of maltodextrin, 0.1-2.0% of wheat gluten, 0.1-1.0% of potassium polymetaphosphate, 0.1-2.0% of salt, 0.02-0.20% of gluconate-delta-lactone, and 0.005-0.020% of ascorbyl palmitate. The mochi bread which is prepared by the mochi bread premix powder with good freeze thawing stability also has good freeze thawing stability and does not crack, shrink or collapse, and moreover the rising degree of the bread during the roasting process is good, the tissue of the bread is fine, the outer part of the bread is crisp and the inner part of the bread is tough, and the bread is chewy. The bread can be stored for more than 1 month at -18 DEG C.

The invention discloses a preparation method of a high-temperature-resistant aluminum oxide-silicon oxide aerogel composite material, wherein the preparation method comprises the following steps: (1) sufficiently dispersing and mixing nano aluminum oxide powder, micron aluminum oxide powder, an infrared opacifying agent and short fibers to obtain a mixture A; (2) performing compression molding on the mixture A to obtain an aluminum oxide composite material; (3) uniformly mixing a silicon source, ethanol and water to obtain silicon dioxide sol; (4) dipping the aluminum oxide composite material by adopting silicon dioxide sol; and (5) performing drying treatment to obtain the high-temperature-resistant aluminum oxide-silicon oxide aerogel composite material. According to the preparation method disclosed by the invention, compounding of aluminum oxide and silicon oxide aerogel is realized through impregnation, a complex preparation process is avoided, the preparation period is shortened, the silicon oxide aerogel is fixed in the aluminum oxide composite material, the compactness of the aluminum oxide composite material is further increased, the composite material has relatively good mechanical properties, and great shrinkage of the aluminum oxide composite material at high temperature is avoided.

The lead plaster for use in battery anode comprises 100 proportion lead powder, 0.05-0.06 proportion fabric and 0.1-0.3 proportion high purity natural graphite powder. The oxidation-proof anode ingredient is selected to improve charging property at low voltage and attain more cycling times.

The invention relates to a method for removing thiophenic sulfur in fuel oil by using an Ag2O/SiO2-graphene oxide composite aerogel as an adsorbent, and belongs to the technical field of fuel oil processing. According to the method, methyl orthosilicate, tetraethyl orthosilicate, silica sol, water glass and the like are used as a silicon source, silver acetate, silver nitrate and the like are usedas a silver source, and the Ag2O/SiO2-graphene oxide composite aerogel is obtained by a sol-gel-normal pressure drying method. The Ag2O/SiO2-graphene oxide composite aerogel is quantitatively filledin a fixed bed adsorption device, simulated gasoline containing the thiophenic sulfur is injected into the adsorbed simulated gasoline at a certain temperature and space velocity into the fixed bed adsorption device, and the adsorbed simulated gasoline is collected at the lower end outlet of the device for chromatographic analysis. Results show that the Ag2O/SiO2-graphene oxide composite aerogel has good adsorption properties for the thiophenic sulfur. The preparation method of the Ag2O/SiO2-graphene oxide composite aerogel adsorben is simple and low in cost, and the adsorbent can be repeatedly used, has high economic efficiency, is environmentally friendly, and has mild adsorption conditions and low requirements on adsorption equipment.

The invention discloses a low-carbon alkane chromium dehydrogenation catalyst containing a spinel structure and a preparation method thereof. The low-carbon alkane chromium dehydrogenation catalyst isused in a fixed bed, the reaction pressure is 0.01-1 MPa, the temperature is 530-660 DEG C, and the mass space velocity is 0.3-8 h<-1>. The low-carbon alkane chromium dehydrogenation catalyst comprises the following components in percentage by mass based on the total mass of a dry base of the low-carbon alkane chromium dehydrogenation catalyst: 0.1-30% of chromium oxide, 0.1-10% of a first auxiliary agent, 0.1-10% of a second auxiliary agent, 0.1-10% of a third auxiliary agent and the balance of a fixed bed carrier. The third additive is one or a mixture of more of rare earth elements. The catalyst has good acidity, so that the catalyst has higher target product selectivity, and acidic cracking is avoided to the greatest extent; the catalyst has a stable spinel structure, the strength andstability of the catalyst are remarkably enhanced, the catalyst has longer service life and excellent selectivity and stability, and the carbon deposition resistance of the catalyst in the light alkane reaction process is remarkably enhanced.

The invention discloses a gel electrolyte of a zinc-based battery and preparation and application thereof. The invention aims to improve the mechanical strength and the ionic conductivity of the gel electrolyte through the synergistic effect of the sodium alginate and the tetraethyl silicate hydrolysate. The preparation method comprises the following steps: (1) dissolving sodium alginate in waterunder a heating condition, sequentially adding tetraethyl orthosilicate, glycerol and an acid solution, adjusting the pH value, stirring for dissolving, and carrying out a reaction for a certain timeat a certain temperature to obtain a uniform mixture; (2) injecting the obtained mixture into a polytetrafluoroethylene mold, and standing for a certain time at room temperature to obtain alginic acidpolysilicic acid hydrogel; (3) dissolving a zinc salt and a lithium salt into water to obtain a water electrolyte; and (4) immersing the hydrogel obtained by standing into a water electrolyte, and obtaining the gel electrolyte at a certain temperature after a certain period of time. According to the invention, the problems of few types of solid gel electrolytes, complex preparation process, low ionic conductivity and low mechanical strength in the prior art are overcome.

The invention relates to the technical field of polyurethane, and concretely relates to a high-wear-resistance and high-strength polyurethane court material, and a preparation method and a using method thereof. The high-wear-resistance and high-strength polyurethane court material comprises a component A and a component B, a mass ratio of the component A to the component B is (28-82):100, and thecomponent A is a liquid formed by mixing polyether polyol with a crosslinking chain extender according to a mass ratio of (2-4):1; the component B comprises polyether polyol, isocyanate, a filler, a defoaming agent, modified carbon nanotubes, a pigment, a dispersant and a catalyst; and the polyether polyol is polyether polyol with a number-average molecular weight of 3000-6000 and a functionalityof 2-3. The high-wear-resistance and high-strength polyurethane court material get rids of a finish paint, so the delaminating phenomenon of an elastic layer and a finish paint layer is thoroughly avoided, the finish paint material is saved, a large amount of the construction cost is saved, and the construction period is shortened. The invention also provides the preparation method and the using method of the high-wear-resistance and high-strength polyurethane court material.

An LED chip silicone die bond adhesive comprises, by weight, 20-40 parts of MT type silicone resin, 20-40 parts of MQ type silicone resin, 15-45 parts of silicone oil, 5-10 parts of a crosslinking agent, 2-10 parts of a special filler, 0.1-0.5 part of a catalyst, 1-10 parts of a binder and 0.3-0.6 part of an inhibitor. The silicone die bond adhesive prepared in the invention has the advantages ofconsideration of the hydroxyl content in the adhesive, good high-temperature bonding performance, control of the content of a Pt-based catalyst, ensuring of the catalytic degree of Si-H and vinyl groups in the silicone die bond adhesive, and ensuring of the high-temperature yellowing resistance.

The invention relates to a method for removing thiophene sulfur from fuel oil by Ag2O/SiO2-Al2O3-graphene oxide composite aerogel and belongs to the technical field of fuel oil processing. The methodis characterized in that the Ag2O/SiO2-Al2O3-graphene oxide composite aerogel is prepared by taking silicon orthosilicate, tetraethyl orthosilicate, silica sol, water glass and the like as silicon sources, taking silver acetate, silver nitrate and the like as silver sources and taking aluminum nitrate, aluminum acetate and aluminum oxalate as aluminum sources and adopting a sol-gel and atmosphericpressure drying method. The Ag2O/SiO2-Al2O3-graphene oxide composite aerogel is quantitatively packed in a fixed bed adsorption device, simulated gasoline containing the thiophene sulfur is injectedat a certain temperature and airspeed, and the simulated gasoline after absorption is collected at an outlet in the lower end of a reaction device for chromatographic analysis. Results show that the Ag2O/SiO2-Al2O3-graphene oxide composite aerogel has good adsorption properties for the thiophene sulfur. The Ag2O/SiO2-Al2O3-graphene oxide composite aerogel absorbent in the method provided by the invention is simple in preparation method, low in cost, capable of reuse for many times, high in economic benefits, environmentally friendly, mild in absorption conditions and low in requirements for absorption equipment.

The invention discloses a composite catalyst with a high specific surface area, which is characterized in that the composite catalyst comprises a magnesium aluminate spinel/boron nitride composite material prepared by taking boron nitride nanosheets as a guiding agent, and vanadium, titanium and molybdenum composite oxides growing on the magnesium aluminate spinel/boron nitride composite materialin situ, the invention also discloses the composite catalyst and application of the composite catalyst in preparation of pyromellitic dianhydride through catalytic oxidation. The composite catalyst provided by the invention is good in dispersity, large in specific surface area, high in catalytic activity and long in service life; when the catalyst is used for preparing pyromellitic dianhydride, the yield of the product can be effectively improved.

The invention belongs to the technical field of polyurethane materials, and particularly relates to a graphene oxide modified environmentally-friendly polyurethane oily topcoat and a preparation method thereof. The graphene oxide modified environmentally-friendly polyurethane oily topcoat comprises a component A and a component B, wherein the component A comprises small molecule polyether, a filler, castor oil, a defoamer, graphene oxide, a pigment, a leveling agent, a dispersant and an organic bismuth catalyst, the component B is a prepolymer, and the prepolymer is made of polyether with a molecular weight of 3000-6000 and functionality of 2-3 and 4,4'-dicyclohexylmethane diisocyanate. According to the present invention, the use of the solvent is eliminated during the production and the use, and the product has characteristics of excellent aging resistance, high toughness, super strength and wear resistance.

The invention discloses a preparation method of a hydrogen sulfide gas sensor material with biomass-loaded inorganic particles as well as a product and application thereof. According to the preparation method, an iron salt and a cobalt salt which are water-soluble are used as precursors, and an OH-containing precipitation agent is added, and the solution is centrifuged and spinel structure CoFe2O4inorganic nanometer particles are collected; biodegradable starch is dissolved in water and mixed with the inorganic particles to form an organic film embedded with inorganic particles; and the organic material has a porous structure, and can realize capture of a large amount of hydrogen sulfide gas, and then the gas sensitive reaction of adsorption and desorption is performed on the CoFe2O4. According to the preparation method of the hydrogen sulfide gas sensor material with the biomass-loaded inorganic particles, a flexible gas-sensitive thin film can be prepared, the operation is simple, and the controllability is high; and the flexible gas-sensitive thin film is used for hydrogen sulfide gas detection.