411results about How to "Improve dispersion" patented technology

The invention discloses a method for preparing a silicon carbide alloy negative electrode material for a lithium ion battery; and a technical problem to be solved is to increase the circulation performance and the specific capacity of a silicon carbide composite negative electrode material. The method comprises the following steps of: dispersing nanometer silica powder in an organic solution to form a uniform nanometer silicon suspending liquid, then adding a silane coupling agent to the nanometer silicon suspending liquid, and finally carrying out carbon coating and thermal treatment. Compared with the prior art, the method has the advantages of increasing the dispersiveness of nanometer silicon particles in a silicon carbide composite material and inhibiting the volume effect caused by the conglobation of silicon in a lithium intercalation and deintercalation process by adding the silane coupling agent, thereby increasing the circulation performance and the specific capacity of the silicon carbide composite negative electrode material, wherein the capacity of the silicon carbide composite negative electrode material is larger than 500mAh/g, and the capacity retention rate is above 97% when the silicon carbide composite negative electrode material is circulated for 50 times; and according to the preparing method, the preparation cost is low, the technology is simple and controllable, and the silicon carbide alloy negative electrode materials with different capacities can be easily prepared by adjusting a weight proportion of Si powder, graphite and an organic matter.

The invention discloses a preparation method of a viscosity-reduction type polycarboxylate water reducer, which belongs to the field of concrete admixtures. The water reducer is prepared from random polyoxyalkyl ether unsaturated acid ester, unsaturated modified polyoxyethylene ether, unsaturated acid alkyl ester, and (methyl) acrylic acid, by means of copolymerization with an aqueous solution and then adding alkali for neutralization, under the presence of an initiator and a molecular weight regulator. By a certain quantity of hydrophobic units and hydrophobic groups which are introduced into and controlled in carboxylic acid copolymer molecule structures, the viscosity of a cement-based material is reduced under the presence of the water reducer. The water reducer prepared by the method has the advantages of high viscosity reducing effect, high dispersibility, good adaptability to cement, and the like; the water reducer is especially applicable to preparation of high-strength concrete, self-compacting concrete, low-water-binder-ratio high-dosage mineral admixture concrete, and the like.

The invention provides a hydrogenation catalyst and a preparation method thereof. The preparation method uses metal active components of group VIB and VIII for step load, wherein metal of group VIB is molybdenum, metal of group VIII is cobalt or nickel, and a carrier is porous oxide. Load of group VIB metal uses a corresponding soluble salt as a raw material, inorganic acid is used as an acidifying agent, and a long-chain alkyl quaternary ammonium cation is used as a precipitating agent; and Mo-based single-component loaded catalyst is prepared by firstly synthesizing an organic-inorganic hybrid material suspension, performing aqueous phase diffusion and tunnel deposition, filtering, washing, drying, and roasting. Load of group VIII metal uses a corresponding soluble salt as a raw material, and the metal is loaded onto the carried through a normal-temperature isopyknic dipping technology. The method can effectively improve load capacity of the active components and dispersiveness of the active components in the tunnels; and the prepared hydrotreating catalysts is excellent in hydrodesulfurization activity.

A nanoparticle thin film, a method for dispersing nanoparticles and a method for producing nanoparticle thin film using the same. The method for dispersing nanoparticles may include modifying the surface of nanoparticles with a charged material, drying the surface-modified nanoparticles under vacuum and/or dispersing the dried nanoparticles in a solvent. According to the methods provided, the nanoparticle thin film may exhibit more stability, lesser defects and/or lesser aggregation of nanoparticles. In addition, 2-dimensional and/or 3-dimensional nanoparticle thin films may be produced in which nanoparticles may be more uniformly applied over larger areas. The nanoparticle thin films produced by the methods may be more effectively used for a variety of applications (e.g., flash memory devices, DRAMs, hard disks, luminescent devices, organic light-emitting diodes (OLEDs) or the like).

The invention provides a surface-modified graphene, comprising a graphene powder and at least one surface-modified layer, wherein the least one surface-modified layer comprises a surface modification agent and at least two functional groups disposed at two ends of the surface modification agent respectively; one functional group of the at least two functional groups can generate a chemical bond with an organic functional group on the surface of the surface-modified graphene powder; and the other functional group of the at least two functional groups forms a surface characteristic of the surface-modified graphene, wherein the surface modification agent comprises at least one of a coupling agent, aliphatic acid and a resin. Therefore, the surface-modified graphene powder can increase the dispersibility of the graphene powder in a solvent, enhance the endophilicity between the graphene powder and an organic polymer, and make the composite material to be more durable and to have wider applications.

The invention discloses an activation method of a catalyst which includes VIB group metal component and VIII group metal component. The metal components exist as the form of oxidation state. The catalyst contacts with alkaline matter containing solution and organic additive solution. At last, activated catalysts is obtained by thermal treatment. Compared with the existing technologies, the method provided by the invention can effectively enhance activity of catalyst.

The invention discloses a preparation method of nano-grade calcium carbonate. The invention belongs to the technical field of compound preparation. The method comprises steps that: S1, lime is digested; S2, a slurry obtained through digestion is sieved, and is then aged; S3, the aged slurry is carbonized; S4, the carbonized slurry is processed through primary cladding; S5, the slurry processed through primary cladding is subject to press-filtrating, drying, crushing, grading, and packaging, such that an intermediate product is obtained; S6, the intermediate product is subject to secondary cladding, such that a nano-grade calcium carbonate finished product is obtained. When the nano-grade calcium carbonate prepared with the method is used in RTV silicon rubber, the nano-grade calcium carbonate has both high dispersity and high reinforcing property.

The invention discloses plant composite engine oil containing graphene, which includes the following raw materials: castor oil, liquid graphene, modified castor oil, an antioxidant, an anti-corrosion agent, an anti-foam agent, an extreme pressure anti-wear agent, a pour point depressant, an anti-rust agent, a viscosity index improver, a dispersing agent, a cleaning agent, a lubrication modifier, an organic anti-aging agent, and modified nano cerium vanadate. By adding the liquid graphene to the plant composite engine oil, lubricating property of the engine oil is improved, wherein the mechanism of lubrication of the graphene is not same as that of an additive in the prior art. Because the molecular particle size of the graphene is very small, the graphene can generate a roll-ball effect during friction between a cylinder wall and a piston, thereby turning sliding friction into rolling friction, and also can flattening the uneven parts on the cylinder wall just like putty. The graphene, as an anti-wear agent, can promote low-viscosity engine oil better, and enables automobiles to be more energy-saving and environment-friendly.

The invention relates to a modified attapulgite heavy metal ion adsorbing agent. The modified attapulgite heavy metal ion adsorbing agent is prepared from the following raw materials in parts by weight: 1 to 2 parts of ammonium sulfate, 2 to 3 parts of water glass, 2 to 3 parts of malonic acid, 6 to 9 parts of layering expanded vermiculite, 0.2 to 0.4 part of citronellol, 1 to 2 parts of a silane coupling agent with amino group, 1 to 2 parts of sodium carboxymethylcellulose, 100 to 120 parts of attapulgite, an appropriate amount of water, 5 to 10 parts of assistants and 20 to 30 parts of a 2% to 3% sodium hydroxide solution. The dispersibility, suspension property, adsorption property and thickening performance of the attapulgite are improved, and the attapulgite is endowed with acid resistance and salt resistance as well as a toxic-free property; the attapulgite modification agent is uniform in modification and unlikely to drop, can be used as an adsorbing agent or a flocculating agent and can remove heavy metal ions, such as copper, in water.

The invention discloses a preparation method of a conductive macromolecule non-covalent functionalized graphene modified electrokinetic energy conversion polymer material. according to the method, conductive macromolecules are non-covalent functionalized onto the surface of nano-graphene; and then, the conductive macromolecule non-covalent functionalized graphene nano-material undergoes ultrasonic-assisted dispersion into an electrokinetic energy conversion polymer solution so as to finally obtain a conductive macromolecule non-covalent functionalized graphene/electrokinetic energy conversion polymer composite material. The electro-stimulate response intelligent polymer composite material obtained by the method has high dielectric constant and high electrodeformation value. When content of poly(3,4-ethylenedioxythiophene): polystyrolsulfon acid non-covalent functionalized graphene nanofiller is 3%, dielectric constant of the modified polyurethane dielectric elastomer intelligent material reaches up to 350 at room temperature and at the frequency of 1000 Hz, dielectric loss is 0.20, and loss modulus is 200 MPa. Under the action of a 32.2 MV/m electric field, electrodeformation value in the thickness direction reaches 162%. Performance of the material provided by the invention is far more excellent than performance of a regular nano-ceramic or nano-conductive filler modified intelligent polymer composite material.

The invention discloses a composite nanotube composed of a molybdenum disulfide-carbon-carbon nanotube and a preparation method thereof. The method comprises the following steps: firstly, orderly dissolving ammonium tetrathiomolybdate and a carbon high-molecular polymer with surface activity into water; then adding a multiwalled carbon nanotube; centrifuging, drying and burning after carrying out ultrasonic dispersing, so as to prepare MoS2-C/CNTs. By using the surface activity of a carbon high-molecular polymer, the molybdenum disulfide is more evenly dispersed on the surface of the carbon nanotube; on the other hand, the conductivity of a compound is improved through the compound of amorphous carbon and molybdenum disulfide left on the surface of the carbon nanotube when a mixture is burnt at high temperature.

The invention relates to a nano composite cold galvanized coating and a preparation method thereof and belongs to the field of nano coatings. The nano composite cold galvanized coating is prepared from the following raw materials in parts by weight: 2-25 parts of acrylic resin, 0.1-5 parts of an assistant, 75-98 parts of zinc powder and 1-70 parts of a solvent, wherein the zinc powder is a mixture of micro-scale zinc powder and nano-scale zinc powder modified by a fluorosilane coupling agent, so that the dispersity of the zinc powder is increased; the compatibility with resin is improved; the coat made of the nano composite cold galvanized coating has high hydrophobic property; the water contact angle is greater than or equal to 135 degrees; the porosity of the cold galvanized coating is significantly reduced; the corrosion resistance of the coating is improved; the nano composite cold galvanized coating disclosed by the invention can be widely applied to anti-corrosion engineering with a novel steel structure, old and new hot-dip galvanizing structures and an electric galvanized steel structure; and the difficulty in corrosion maintenance of transmission and substation facilities and substation equipments can be conveniently and rapidly solved.

The invention belongs to the field of biological sensor technique, in particular to a glucolase electrode and a preparation method thereof on the basis of a magnetic carbon nano-tube. The preparation method of the invention disperses the carbon nano-tube ultrasonic into a chitosan acid aqueous solution containing ferric ions and ferrous ions so as to prepare the three-composition nanometer magnetic composite material which consists of the carbon nano-tube, ferroferric oxide and chitosan; the three-composition nanometer magnetic composite material is dispersed into glucose oxidase aqueous solution, adsorbs the glucolase and is dispersed into glutaraldehyde aqueous solution; by primary amino-group reaction crosslinking, the glucose oxidase is fixed on the surface of the magnetic composite material, thus obtaining the updatable glucolase electrode based on the magnetic carbon nano-tube; the glucolase electrode provided by the invention has high response speed, wide detection consistency range, simple and convenient electrode processing and simple and convenient preparation of the immobilized enzyme magnetic material; when the enzyme is deactivated, the electrode is regenerated by updating the enzyme material of the electrode surface based on the magnetic carbon nano-tube, therefore, the consumption of the electrode material is greatly reduced, the resource is saved and the cost of enzymatic determination is reduced.

The invention discloses a preparation method and application of a magnetic graphene oxide adsorbent material. The preparation method comprises the steps that chitosan reacts with ferrous ions and ferric ions to synthesize magnetic chitosan nanoparticles; the magnetic chitosan nanoparticles are subjected to reduction and acidification by carbon disulfide, then connect onto the surface of graphene oxide by an amidation reaction, thus a new magnetic graphene oxide adsorbent material capable of adsorbing metal ions, especially copper ions is obtained. The graphene oxide has unique two-dimension monoatomic layer structures, so that the surface area of the graphene oxide is large, then a large number of oxygen-containing groups distributed on the surface of the graphene oxide are capable of well adsorbing the metal ions in wastewater, and the magnetic chitosan modified by CS2 is added, not only are the adsorbability and the dispersibility in water improved, but also the separation is easier under the action of an applied magnetic field. The defects of low adsorbing capacity, difficult recovery and reuse, long separating time, low adsorption efficiency and the like in a process that a traditional adsorption material adsorbs the copper ions are overcome.

The invention relates to a waste polymer modified asphalt composition. The waste polymer modified asphalt composition comprises following components in parts by weight; 60-85 parts of petroleum asphalt, 6-20 parts of a waste polymer material, 1-8 parts of a compatilizer, 1-1.5 parts of SBS, 0.01-0.5 parts of a stabilizing agent, and 1-10 parts of one or more of native asphalt, coal pitch or biological asphalt. The waste polymer modified asphalt composition can well increase high-temperature storage stability of waste polymer material modified asphalt; pre-swelling performance of the polymer material and similar compatibility with asphalt are improved as the compatilizer is added; storage stability of the waste polymer material in asphalt can be improved extremely as a small quantity of SBS and a small quantity of the stabilizing agent are added; producing cost of the composition can be decreased as the native asphalt, coal pitch or biological asphalt replaces a portion of the petroleum asphalt; the prepared modified asphalt is excellent in high-temperature performance and low-temperature ductility; and the preparation method is simple, safe, and convenient for industrial application.

An improved throat (2) for transmitting acoustic energy from a source driver unit (7) to a feeder section (3) of a directivity controlling acoustic horn is disclosed. The throat (2) comprises: a circular throat entrance (2i) connectable to the source driver unit (7); a rectangular throat exit (2e) connectable to or integral with the feeder section (3); and a circular cross-section to rectangular cross-section transition portion (2a) extending between the throat entrance (2i) and the throat exit (2e). The throat (2) is shaped such that its profiles initially diverge from an axis longitudinal to the throat (14) at the same angle in a direction from the throat entrance (2i) towards the throat exit (2e). Such a throat, when fitted in an appropriate acoustic horn with a source driver unit having a taper matching the aforesaid profile angles, provides a smooth transition for sound waves propagating out from the source driver unit into the horn.

The invention relates to a flame retardant conducting polymer composition with positive temperature coefficient (PTC) effect or characteristic. The composition is prepared by the following steps: placing a raw material mixture consisting of a crystalline thermoplastic polymer, a conductive filler, an adjuvant, a phosphorus flame retardant, a nitrogen flame retardant, a metal hydroxide and a polar polyolefin copolymer into a mixing device for mixing at the mixing temperature which is at least 20 DEG C higher than melting point of the crystalline thermoplastic polymer for 10-30 minutes; irradiating and crosslinking the mixed mixture with electron beams or gamma rays to obtain the composition. The PTC strength of the prepared target composition is more than 10<3>, resistivity is 10<3>omega.cm-10<5>omega.cm at the room temperature (25 DEG C), and oxygen index is larger than 27. The prepared composition also has the advantages of even joule heat distribution, excellent self-temperature conditioning property, low smoke and non-toxicity, and can be used for preparing environment-friendly self-temperature control electric heating devices with higher safety and reliability.

The invention relates to the technical field of concrete admixtures, in particular to a clay-resisting slow-release slump-retaining type polycarboxylate superplasticizer and a preparation method thereof. With polyether macromonomers, unsaturated carboxylic acid, unsaturated carboxylic ester, dibasic acid anhydride, a crosslinking agent, amide monomers, unsaturated phosphate ester, phosphate, an oxidizing agent , a reducing agent, a chain transfer agent, a neutralizing agent and water as raw materials, the clay-resisting slow-release slump-retaining type polycarboxylate superplasticizer is synthesized at normal temperature. Ester groups, amide groups and phosphate ester are introduced into the molecular structure of the polycarboxylate superplasticizer, and light crosslinking of the polycarboxylate superplasticizer is realized through the long-chain ester crosslinking agent, so that the superplasticizer has a good clay-resisting and slump-retaining effect and has the advantages of low mixing amount, high water reducing rate, high adaptability to clay-containing sand, good slump retaining performance and the like; besides, only normal-temperature polymerization is needed, the processis simple, the production cost is low, and the superplasticizer is suitable for industrial production.

The invention discloses a high-performance rubber material for cable sheaths, which is prepared from the following raw materials in parts by weight: 40-55 parts of styrene-butadiene rubber, 30-35 parts of ethylene propylene diene monomer rubber, 15-25 parts of natural rubber, 5-6.8 parts of zinc oxide, 2-3 parts of stearic acid, 1.4-1.8 parts of dicumyl peroxide, 10-15 parts of sorbic acid, 5-8 parts of argil, 5-8 parts of coupling agent, 10-18 parts of kaolin, 15-25 parts of modified purple carbon black, 5-13 parts of silica white, 30-45 parts of silicon dioxide, 15-25 parts of spiral nano carbon fiber, 0.8-1.2 parts of accelerator TMTD, 0.4-0.6 part of accelerator ZDC, 5-15 parts of magnesium methacrylate, 3-6 parts of heat-resistant agent LiCO3-50, 3-5.8 parts of microcapsulated red phosphorus, 3-8 parts of anti-aging agent GM and 0.8-1.8 parts of microcrystalline wax. The raw materials are plasticized, mixed and vulcanized to obtain the high-performance rubber material for cable sheaths, wherein the vulcanizing temperature is 145-155 DEG C, the vulcanizing pressure is 15-18 MPa, and the vulcanizing time is 25-35 minutes. The high-performance rubber material for cable sheaths has the advantages of high strength, high wear resistance and high flame retardancy.

The invention discloses an industrial reaction kettle suitable for feed liquid of chemical industry and medicine. The industrial reaction kettle comprises a reaction kettle body, wherein the reaction kettle body comprises a variable frequency motor, a feeding hole, a speed reducer, a stirring shaft and a base; the variable frequency motor and the feeding hole are respectively arranged and formed above the reaction kettle body; the stirring shaft extends into an inner cavity of the reaction kettle body; an output part of the variable frequency motor is connected with an input end of the speed reducer, and an output end of the speed reducer is connected with the stirring shaft; the end of the stirring shaft is provided with a connecting piece and a fan-shaped stirring wheel; a spiral mixing wheel is arranged at the periphery of the stirring shaft; the stirring shaft is also provided with a connecting rod; two stirring pieces are symmetrically arranged on the connecting rod at left and right; the outer wall of the cavity of the reaction kettle body is provided with an air pump and a liquid collection box; the air pump is connected with a baffle plate by a guide pipe, and the baffle plate is arranged on the inner wall of the cavity of the reaction kettle body; the bottom of the cavity of the reaction kettle body is also provided with a discharge hole. The industrial reaction kettle has the advantages of reasonable structural design, good using effect, full stirring, etc.

The invention relates to a method for processing the inorganic surface of nanometer zinc oxide, and belongs to the field of nanometer materials. The method for processing the inorganic surface of the nanometer zinc oxide comprises the following steps: cladding aluminum phosphate on the surface of the nanometer zinc oxide; then cladding silicon oxide; filtering and washing the paste of the nanometer zinc oxide, so that the electric conductivity of filtrate is less than 300 Mu S/cm; drying the filtrate; and obtaining nanometer zinc oxide composite powder after the filtrate is crushed. The method has short process flow, convenient operation and easy control. The nanometer zinc oxide composite powder prepared has the advantages of excellent light stability, small dissolution rate of zinc ion and good dispersivity.

The invention provides a special sweet potato fertilizer. The special sweet potato fertilizer is prepared from the following raw materials in parts by weight: 10-20 parts of vinasse, 15-17 parts of enveloped ammonium bicarbonate, 10-12 parts of monoammonium phosphate, 10-12 parts of enveloped ammonium sulfate, 16-18 parts of enveloped potassium sulphate, 20-30 parts of plant ashes, 1-2 parts of manganese sulfate, 1-2 parts of ferrous sulfate, 1-2 parts of magnesium sulfate, 0.1-0.5 part of zinc sulfate, 0.1-0.3 part of borax, 10-12 parts of cinerite, 5-7 parts of wood charcoals, 3-4 parts of radix euphorbiae lantu powders, 3-4 parts of radix stemonae powders, 10-15 parts of bagasse, 10-15 parts of volcanics, 18-22 parts of cow dung, 3-4 parts of carboxymethylcellulose, 15-20 parts of 30% of sulfuric acid, 5-10 parts of limes, 10-15 parts of pig hairs and 4-6 parts of cottonseed oil. The special sweet potato fertilizer is prepared by a method comprising the following steps: conducting acidolysis on hairs to generate amino acid, then generating a micro element fertilizer liquid and an intermediate element fertilizer liquid chelated with amino acid, then sintering the volcanics to prepare a fertilizer carrier, fermenting an organic fertilizer, mixing a nitrogen-phosphorus-potassium fertilizer, the carrier, the organic fertilizer and a vegetable insecticide, then spraying the micro element fertilizer liquid and the intermediate element fertilizer chelated with amino acid, then granulating, and finally adopting the cottonseed oil for enveloping. According to the special sweet potato fertilizer provided by the invention, the fertilizer utilization ratio is improved obviously, the slow release effect is achieved, the fertilizer application amount is lowered, the pesticide residual is lowered, and the output and the quality of sweet potatoes are improved.

The invention relates to a fire retardant and an application thereof in polymer modification. The fire retardant can effectively improve the surface property of magnesium hydrate, and increase the compatibility thereof with a polymer, and the modified polymer has good retardant property and processing and mechanical properties. The raw materials of the fire retardant are calculated by weight and comprise 100 portions of magnesium hydrate, 5 portions to 15 portions of silane coupling agent and 3 portions to 10 portions of higher fatty acid and/or higher fatty acid salt. The application of the fire retardant in the polymer modification can be carried out by a common mode, and 50 portions to 70 portions of the fire retardant is melted and blended with 30 portions to 50 portions of the polymer by weight. The method modifies the magnesium hydrate together with a silane coupling agent, the higher fatty acid and/or higher fatty acid salt and a fire-retardant synergist. The compatibility of the fire retardant obtained and the polymer is greatly improved, compared with the compatibility of the fire retardant obtained and magnesium hydrate, thus being capable of effectively increasing the filling content of the magnesium hydrate in the polymer and not only improving fire-retardant property, but also improving processing and mechanical properties relatively.

The invention discloses an automobile engine fluorosilicone seal ring sizing material, which is prepared from the following raw materials in parts by weight: 70-80 parts of fluorosilicone rubber, 20-25 parts of styrene butadiene rubber, 4-6 parts of methylvinylsiloxane rubber, 0.5-1.0 part of di-n-octyltin bis(isoctyl thioglycollate), 4-6 parts of zinc oxide, 0.5-1.5 parts of zinc stearate, 5-8 parts of glycol di-2-ethylhexoate, 0.5-1 part of hydroxyl-fluoro silicone oil,, 0.2-0.6 part of paraffin wax, 1-2 parts of silane coupling agent KH-550, 1-2 parts of anti-aging agent AW, 0.1-0.3 part of anti-aging agent 4010NA, 10-15 parts of modified meerschaum, 30-40 parts of carbon black N330, 10-20 parts of modified iron tailings, 20-25 parts of colza oil, 0.5-0.8 part of vulcanizing agent BP, 0.5-1.0 part of accelerating agent TMTD, 0.2-0.5 part of accelerating agent M, 1-2 parts of ferrocene, 0.8-1 part of sodium polyoxyethylene fatty alcohol sulfate, and 0.8-1 part of diethanolamide. The automobile engine fluorosilicone seal ring sizing material has excellent high and low temperature-resistant, oil-proof, solvent-resistant and chemical-resistant performances, and at the same time is good in mechanical property.

The invention relates to a silane modified graphene oxide modified polycarboxylic acid reducer and a preparation method thereof. The reducer is prepared from the following steps: uniformly mixing gamma-methylacryloyl propyl triethoxy silane and a 50% ethanol solution till being fully hydrolyze to silanol groups; adding graphene oxide, and dispersing the graphene oxide ultrasonically to be dispersed uniformly and heating the same with a water bath; after the mixture is cooled to room temperature, carrying out suction filtration thereon through a vacuum pump and washing the ethanol solution; andcarrying out a free radial polymerization reaction of an aqueous solution on the prepared silane modified graphene oxide and isobutenol polyoxyethylene ether to obtain the silane modified graphene oxide modified polycarboxylic acid reducer. Compared with the prior art, the reducer has the advantages of being high in dispersing action to newly stirred cement-based materials, obvious in hardened cement-based material enhancing effect and the like, and is simple in preparation process, easily available in raw material, low in cost and suitable for industrial production.

The invention relates to a mesoporous material and particularly relates to a functionalized ordered mesoporous silicon material which is synthesized by taking polyacid-type ionic liquid as a raw material as well as an application of the mesoporous silicon material in oxidation desulfuration of fuel oil. According to the mesoporous silicon material, the polyacid-type ionic liquid is not only used as a template agent of the mesoporous material, but also used as a catalytic activity center, and transition metal is introduced into the mesoporous material structure in situ. A simple and nontoxic synthesis method of the metal-doped green mesoporous material is searched, has a favorable academical research value and also has a wide application prospect in the industrial production. The mesoporous silicon material as well as the preparation method and the application thereof have the advantages that the method is simple in process, and the mesoporous silicon material which is narrow in pore size distribution, regular and ordered in pore duct and good in thermal stability and has the pore size of 2-50nm is self-assembled under the guidance action of inorganic matters and organic matters by adopting a sol-gel method. The purpose of deep desulfuration can be achieved when the mesoporous silicon material is used as a catalyst for an oxidation removing reaction process of organic sulfides.

Provided is a polyvinylidene fluoride resin composition in which inorganic pigment is well dispersed and which can form a film that suffers from little defect caused by poor dispersion and that has mechanical strengths suitable for practical use. Also provided are a film, a back sheet, and a solar cell module. A resin composition obtained by blending 100 parts by mass of a resin component consisting of 50 to 95% by mass (in total) of two kinds of polyvinylidene fluorides which are different in shape or melt flow characteristics and 5 to 50% by mass of polymethyl methacrylate with both 7 to 40 parts by mass of a white inorganic pigment and 0.01 to 7 parts by mass of an inorganic pigment for color matching, wherein at least one of the polyvinylidene fluorides exhibits an MFR (230 DEG C, 3.8kg load) of 3 to 35g/10min and the polymethyl methacrylate exhibits an MFR (230 DEG C, 10kg load)of 2 to 20g/10min.

The invention discloses high-dispersity water-based carbon nanotube conductive slurry. The high-dispersity water-based carbon nanotube conductive slurry comprises, by mass, 10-60 parts of water-soluble resin, 5-40 parts of activated carbon nanotube, 20-70 parts of water-based solvent B, wherein the activated carbon nanotube is obtained by stirring carbon nanotube powder at high speed, dissolving dispersing agent in liquid and spraying the solution into the carbon nanotube powder during the stirring to activate the surface of a carbon nanotube. The high-dispersity water-based carbon nanotube conductive slurry is good in conductivity, good in anti-static property, good in dispersity and capable of being stored for a long time.

The invention provides high-efficiency chilling molding sand. The high-efficiency chilling molding sand is characterized by being prepared from the following raw materials in parts by weight: 240-260 parts of chromite sand, 100-120 parts of alumina, 20-30 parts of brown aluminum oxide, 1-2 parts of nanometer carbon powder, 1-2 parts of calcium aluminate cement, 3-4 parts of alpha-Al2O3 micro powder, 10-12 parts of steel fiber, 2-3 parts of sodium tripolyphosphate, 1-2 parts of dimethyl silicone oil, 1-2 parts of ferrocene, 4-5 parts of furan resin, 2-3 parts of benzenesulfonic acid and a proper amount of water. The preparation method of the high-efficiency chilling molding sand comprises the following steps: calcining chromite sand and alumina, adding the sodium tripolyphosphate, the furan resin and the like, grinding, and finally calcining at a high temperature. The obtained high-efficiency chilling molding sand has excellent caking property, plasticity, thermal stability, air permeability and dispersity; the dispersity of the high-efficiency chilling molding sand is improved by using the alpha-Al2O3 micro powder, so that the molding sand is uniform; and the heat-conducting property of the high-efficiency chilling molding sand is improved by using the nanometer carbon powder, so that the effect of chilling castings is improved. The high-efficiency chilling molding sand is easy to mold and easy for core manufacturing. By adopting the high-efficiency chilling molding sand, the shrinkage cavity phenomenon of the castings is solved, the shrinkage porosity effect is above 90%, and the rate of finished products of the castings is improved.

The high efficiency corrosion and scale inhibitor consists of polyhydrolic alcohol phosphate ester 30-40 wt%, zinc sulfate 15-30 wt%, acrylic acid, acrylate and sulfonate copolymer 5-10 wt%, except water. The high efficiency corrosion and scale inhibitor is used as scale inhibitor and corrosion inhibitor in circular cooling water of oil refinery, chemical plant, chemical fertilizer plant, air conditioning system, heat exchanger of copper, etc. and is especially suitable for use in water flooding recovery. The outstanding advantages of the present invention include operating capacity in relatively high concentration of total soluble solid content up to 30 g/L in cooling water, and high corrosion and scale inhibiting effect even if in oil containing sludge water condition.