131results about How to "Help adsorption" patented technology

The invention relates to high-strength temperature-sensitive hydrogel as well as a preparation method and application thereof. The high-strength temperature-sensitive hydrogel is prepared by copolymerizing 2-vinyl-4,6-diamino-1,3,5-triazine and N-isopropyl acrylamide as raw materials in the presence of a cross-linking agent and an initiator, wherein the mass ratio of the 2-vinyl-4,6-diamino-1,3,5-triazine as a monomer to the N-isopropyl acrylamide is 0.2-2:1. The high-strength temperature-sensitive hydrogel has high stretching and compression resistance and favorable biocompatibility and optical property, and the surface of the hydrogel has the capacities of adsorbing DNA (Deoxyribonucleic Acid) transfection cells and regulating the attaching and disattaching behaviors of the cells through temperature. The preparation method of the hydrogel is simple, and the hydrogel is easy to store for a long term and transport for a long distance.

The invention discloses a preparation method of a flexible anode of a lithium-selenium battery. The flexible anode is compounded of a carbon fiber film and elemental selenium, wherein the carbon fiber film is self-supported and modified with nitrogen-containing porous carbon on the surface. The preparation method concretely comprises the steps of in situ forming a metal-organic framework ZIF-8 on a freeze-dried bacterial cellulose membrane, carrying out high temperature carbonization, and enabling the product to be compounded with a selenium-containing organic solvent. The flexible anode of the lithium-selenium battery, obtained by the method, has the advantages of good selenium fixing effect, high selenium content, high mechanical strength, etc. Furthermore, the preparation method is simple and does not need a complicated coating technology; the prepared flexible anode of the lithium-selenium battery is free of a bonding agent, a conductive agent and a current collector, is applied to the lithium-selenium battery and has excellent electrochemical performance.

The invention relates to a nitrogen-doped carbon-coated vanadium nitride electrode material as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, preparing a vanadium pentoxide nanowire precursor from vanadium pentoxide as a main raw material; by taking a pyrrole monomer as a main raw material, coating the surface of the vanadium pentoxide nanowire precursor with polypyrrole; finally performing calcining, thereby obtaining the electrode material. The preparation method is simple, high in repeatability and relatively low in equipment and chemical requirement; the prepared electrode material can be not only applied to a lithium-sulfur battery anode material, but also used as a lithium ion battery cathode material, can be compounded with graphene and is excellent in electrochemical property.

The invention provides a method for preparing a sponge-shaped porous carbon fiber membrane. The method is characterized by comprising the following steps: 1, preparing a precursor spinning solution, wherein the precursor spinning solution comprises a macromolecule polymer carbon source, a solvent, a cross-linking agent and a pore forming agent; 2, carrying out electrostatic spinning on the obtained precursor spinning solution so as to obtain a precursor fiber membrane; 3, calcining the obtained precursor fiber membrane in an air atmosphere so as to obtain a pre-oxidized fiber membrane; and 4,carrying out high-temperature carbonization on the pre-oxidized fiber membrane in the presence of nitrogen or an inert gas, thereby obtaining the sponge-shaped porous carbon fiber membrane. The fibermaterial prepared by using the method is high in porosity, large in specific surface area and controllable in surface morphology, pores are inter-linked and are uniformly distributed, and meanwhile, aformed three-dimensional network fiber membrane has adjustable thicknesses, and has excellent conductivity, mechanical flexibility and super-hydrophobicity as well.

The invention provides a preparation method of a novel high-efficiency haze filtration silver nanowire net and MOFs (metal-organic frameworks) composite porous fiber film material. The preparation method is characterized by comprising the following steps of preparation of silver nanowires, preparation of MOFs, preparation of a spinning precursor solution, preparation of a spinning solution, electrostatic spinning, preparation of suction filtration dispersing liquid and suction filtration and filming. The preparation method has the benefits that the preparation method of the novel high-efficiency haze filtration silver nanowire net and MOFs composite porous fiber film material prepares a composite fiber film by using the silver nanowires in certain diameters and the MOFs in certain particlesizes for doping; pore sizes of the fiber film formed by the spinning are used for filtration; at the same time, lower voltage is applied; particulates are collected by a remote electrostatic force of the silver nanowire; an filtration effect is improved; and since the silver nanowires have a sterilization function, the composite porous fiber film material can achieve a multifunctional haze filtration effect.

The azacycle containing pesticide microemulsion and its preparation process relates to many sorts of new water emulsion pesticide preparations. The present invention features that some azacycle containing pesticides may be dissolved temporarily in the mixed solution system of inorganic acid with or without organic acid and the solution may be maintained by using surfactant with or without antifreezing thickener, so as to prepare azacycle containing pesticide microemulsion of 2-60 % concentration and containing no harmful solvent. The present invention opens one new way for preparing water emulsion pesticide preparations.

The invention discloses toilet powder for pigs and a preparation method thereof. The toilet powder for pigs is prepared from the following ingredients: smectite, active carbon, corn starch, talcum powder, magnesium stearate plant extracts and plant essential oil. The preparation method of the toilet powder comprises the steps of pulverizing, drying, mixing and the like. After being smeared on newborn piglets, the toilet powder is capable of adsorbing the body surface slime of the piglets, quickening the drying of skin, and reducing body heat losses; by virtue of smearing the toilet powder on umbilical cords of the piglets subjected to rupture of the umbilical cords, the toilet powder is capable of assisting rapid and dry falling of the umbilical cords and meanwhile protecting the piglets from being invaded by microorganisms such as bacteria; by virtue of applying the toilet powder to the vulva of a sow, the toilet powder is capable of promoting the vulva recovery and healing of the sow and reducing the uteritis occurrence possibility; by virtue of spraying the toilet powder into a livestock shed, the toilet powder is capable of reducing the humidity of the livestock shed, eliminating the peculiar smell of the livestock shed, restraining the proliferation of bacteria and improving the environment.

The invention discloses a graphene cement base material capable of adsorbing heavy metal ions and a preparation method of the graphene cement base material, belonging to the technical field of composite materials. Used raw materials are functionalized graphene, cement, sand and water. The preparation method comprises the steps of adding the weighed functionalized graphene into the water, ultrasonically treating for 30min, adding the cement and the sand into a stirring pot, and stirring; then performing die-filling forming and maintaining to obtain a formed finished product of the graphene cement base material. The graphene cement base material has high capability of adsorbing the heavy metal ions in polluted water, can be used in places such as drainage pipelines, channels, artificial river-bed bottoms and sewage settling tanks, can be recycled, and is green and environment-friendly.

The invention discloses a preparation method of a reactive gemini quaternary ammonium salt leather bactericide. The preparation method comprises the following three steps: first step, carrying out esterification reaction on bromoacetyl bromide and fatty alcohol to generate bromine acetate; second step, carrying out nucleophilic substitution on trans-1,4-dichloro-2-butene and diethylamine to generate trans-N,N,N',N'-tetraethyl-2-butene-1,4-diamine; and third step, carrying out quaterisation on products obtained from the first two steps to obtain a reactive gemini quaternary ammonium salt. The preparation method is easy to operate, the yield of products is high, the cost of raw materials is low, the practicality is high, and moreover, a method for synthesizing diamine intermediate in the second step provides a new thinking and new method for synthesis of the gemini quaternary ammonium salt. Owing to existing of prepared bactericide molecular structure ester groups, the sterilizing property is improved, and biodegradability can be good. In addition, owing to existing of active groups C=C in the structure, the chemical activity of the gemini quaternary ammonium salt is improved, the gemini quaternary ammonium salt can be further chemically bounded into skin collagen and leather coating resin materials, and the long-lasting sterilizing property can be achieved.

The invention, which belongs to the technical field of energy material preparation, relates to a preparation method for growing a NiCo2S4 nanowire by using silk as a substrate to form a capacitor material. The specific preparation process comprises: growing a nickel-cobalt precursor on silk; carrying out hydrothermal vulcanization treatment on the obtained nickel-cobalt precursor to remove the silk and thus forming a hollow structure; and then carrying out oxidative calcination treatment to obtain a capacitor material having a 3D hollow structure. According to the invention, the spinous structure of the NiCo2S4 nanowire is kept well; a large specific surface area and more active sites are provided; the electron / ion in the electrolyte solution can be absorbed conveniently, so that the electrochemical performance of the material becomes excellent and stable. In addition, the hollow structure has the diameter of 8 to 9 nm and thus a convenient passage is provided for electron / ion transport, so that the reaction is carried out continuously and effectively. The prepared capacitor material having the excellent electrochemical performance and the outstanding cycle stability is a potentialmaterial and has broad application prospects.

The invention relates to a flexible gas-sensitive sensor based on a tin oxide / gallium oxide heterojunction nano array and a manufacturing method of the flexible gas-sensitive sensor. The flexible gas-sensitive sensor comprises Ti / Au electrodes, a flexible glass fiber cloth substrate, an SnO2 film positioned on the flexible glass fiber cloth substrate and a beta-Ga2O3 nano column array which is positioned above the SnO2 film, wherein the SnO2 film is positioned on the beta-Ga2O3 nano column array and the flexible glass fiber cloth substrate; a contact surface between the SnO2 film and the beta-Ga2O3 nano column array forms a heterojunction; one of the Ti / Au electrodes is positioned above the SnO2 film and the other one is positioned above the beta-Ga2O3 nano column array. The gas-sensitivesensor has a three-dimensional space heterojunction interface structure, is stable in gas-sensitive characteristics, is flexible and bendable, is low in working temperature and power consumption, canbe used for flexibly wearable VOC gas detection, and has a very great application prospect in the fields of detection for indoor formaldehyde gas, acetone content of a diabetic patient, and drunk driving.

The invention belongs to the field of solid composite catalysts, and provides a C3N4-supported acid / alkali bifunctional metal organic framework (MOFs) based composite catalyst, and a preparation method and an application thereof. The preparation method comprises the steps of: 1) dissolving carbon nitride and dopamine hydrochloride in a trihydroxymethyl-aminomethane buffer solution prepared before,performing a stirring reaction, and filtering, washing and drying a reaction product after the reaction is finished to prepare C3N4@PDA; 2) dissolving a zirconium salt, 2-aminoterephthalic acid and mono-sodium 2-sulfuric terephthalate in a weak-acid solution and performing ultrasonic dispersion, adding the C3N4@PDA to the mixture system, and performing vibrating mixing and a water bath reaction;3) centrifugally collecting and washing the reaction product; and 4) filtering and vacuum-drying the product to prepare the C3N4-suppported acid / alkali bifunctional MOFs-based composite catalyst, which has a porous structure and large specific surface area, and has beneficial to adsorption of glucose molecules, thus improving isomerization process and dehydration reaction.

The invention relates to a heat insulating material used for an aqueduct and a preparation method thereof. The heat insulating material used for the aqueduct is characterized in that the material is made by mixing and stirring dry mixture and water, the mass ratio of the water to the dry mixture is between 1.1:1 and 1.2:1; the dry mixture consists of cement, vitrified hollow beads, sepiolite fiber, siliceous dust, cement-based capillary crystalline material, waste rubber powder, re-dispersible emulsion powder and hydroxypropyl methyl cellulose; and the mass percentage of the raw materials of the dry mixture are: 35 to 54.9 percent of the cement, 35 to 54.9 percent of the vitrified hollow beads, 2 to 8 percent of the sepiolite fiber, 3 to 6 percent of the siliceous dust, 1 to 4 percent of the cement-based capillary crystalline material, 3 to 6 percent of the waste rubber powder, 1 to 5 percent of the re-dispersible emulsion powder and 0.1 to 0.5 percent of the hydroxypropyl methyl cellulose. The heat insulating material has the characteristics of low water absorbing rate, high cohesional strength and compressive strength, good anti-cracking ability and good stability.

The invention discloses a basement indoor dampproof structure. The basement indoor dampproof structure comprises a wall dampproof structure, a ground dampproof structure, leading pipes and a fan, wherein the wall dampproof structure comprises a first water insulation layer, a bonding mortar layer, a heat preservation layer, a second water insulation layer, first fiberglass grid cloth, a first mask mortar layer, second fiberglass grid cloth, a second mask mortar layer, a veneer bonding layer and a decorative layer; the ground dampproof structure comprises a third water insulation layer and a fourth water insulation layer which are each provided with third water insulation monomers and fourth water insulation monomers; the leading pipes are arranged on the edge of the upper end of a wall in an embedded mode, one ends of the leading pipes are closed, and the other ends of the leading pipes extend outdoors; and the air outlet end of the fan communicates with one third water insulation monomer or one fourth water insulation monomer. According to the basement indoor dampproof structure, through the modes that outdoor underground water is blocked and actively diffuses, the outdoor underground water is effectively prevented from permeating into a basement, the indoor humidity is decreased, and through assistance of the effective heat preservation structure, indoor moisture is effectively prevented from condensing on the wall or the ground.

The invention discloses a fly ash high-foaming furniture plate which is prepared from 42-45kg of 280-300-mesh fine fly ash, 0.05-0.06kg of 1mm rock wool, 10-11kg of 80-100-mesh coarse fly ash, 2.5-2.7kg of 1000-1200-mesh talcum powder, 42-43kg of PVC (polyvinyl chloride), 6.8-7kg of PVC recycled waste, 1.9-2.1kg of lead salt composite stabilizer, 1.8-2kg of ABS (acrylonitrile-butadiene-styrene), 1.6-1.8kg of ACR (401), 0.5-0.75kg of NC white foaming agent, 0.2-0.3kg of paraffin, 0.25-0.3kg of LP-60 (neutral saturated fat alcohol dicarboxylate), 0.15-0.25kg of AC (azodicarbonamide) foaming agent, 7.5-8kg of ACR (530) foaming regulator, 0.8-1kg of ACR (175) lubricating processing assistant and 1-1.1kg of stearic acid. The manufacturing process comprises the following steps: weighing the materials; stirring the fly ash and talcum powder, adding the PVC, stirring, adding the other materials, and stirring; extruding a formed billet by an extruder; and preparing the formed billet into furniture. The fly ash high-foaming furniture plate has the advantages of light weight, elegant appearance, corrosion resistance and weathering resistance.

The invention relates to a method for production of o-xylene from coal based raw materials. The method adopts cheap coal based crude benzene and coal based crude methanol as the raw materials, employs a weak acid and medium strong acid based alkylation catalyst with large surface area and an anti-coking alkylation reaction medium, and carries out pickling, hydropretreating, alkylation reaction, rectification, isomerization reaction, and transalkylation reaction for high selectivity production of o-xylene; optionally, the method further comprises toluene disproportionation reaction. The alkylation reaction is carried out in a fixed bed, fluidized bed or moving bed reactor, the catalyst is a two-metal oxide modified flake MCM-56, nano acicular ZSM-5, flake MCM-49 or nano Beta molecular sieve, or a compound thereof; the isomerization, transalkylation and disproportionation reactions also use the novel special catalyst, and are all carried out in a fixed bed reactor. The method provided by the invention can effectively reduce the production cost of o-xylene, and completely realizes non-petroleum route production thereof.

The invention relates to a grain-saving feed diluted enzyme additive and a preparation method thereof. The grain-saving feed diluted enzyme additive consists of rare earth chloride, rare earth nitrate, lignin enzyme, cellulase, hemicellulase, complex enzyme, medical stone, bentonite, talcum powder, zeolite, ferrous sulfate, manganese sulfate, zinc sulfate, copper sulfate, cobalt sulfate, calcium sulfate and sodium selenite. Lanthanide series light rare earth and enzyme are taken as main materials, Chinese medical stone is taken as a carrier, a proper amount of microelements is taken as feed additive, catalysis of the rare earth, degradation of the enzyme and nutrition functions of the microelements are combined according to optimal proportion. The feed made from the additive has rich nutrition, delicious flavor and high digestivity, and can increase yield factor of livestock and poultry by 6-8%, save 10-12% feed, reduce feed cost by 8-10%, and effectively improve product quality.

The invention belongs to the field of bionics, and particularly relates to a foot pad of a bionic wet-sucking wall-climbing robot with a semispherical microstructure. The foot pad comprises a foot pad substrate, a foot pad microstructure array and an ejected liquid micro flow path; when the foot pad is manufactured, the foot pad substrate, the foot pad microstructure array and the ejected liquid micro flow path are integrally manufactured by casting silicon rubber, and are installed on a wall-climbing robot by using screws through through holes on a foot pad substrate plane. According to the foot pad, the area of the semispherical three-dimensional microstructure with a contact plane in the sorption is rapidly increased, and the sorption force is subsequently increased, so that the sorption is more effect; in desorption, the area of a separation angle and the contact plane is rapidly decreased, and the sorption force is rapidly decreased, so that the desorption process becomes relatively easier, as a result, the alternative operation of sorption and non-sorption can be rapidly accomplished, and requirements of the bionic wet-sucking wall-climbing robot on sorption and non-sorption are met; and in addition, a great number of ejected liquid flow paths which pass through the semispherical microstructure are beneficial for the secretion and discharge of grume, so that the sorption force is effectively increased. The foot pad is simple in structure, and main parts of the foot pad are manufactured in a silicon rubber casting and are easy to machine.

The invention belongs to the technical field of food processing and discloses a rice conditioning process and an instant rice production method. On the basis of an instant high-temperature fluidization technique, rice conditioning pretreatment is realized; by a rice water refilling technique, preparation of conditioning liquid of soft rice flour and edible oil compound rice water is realized; by adoption of a rapid cooling film-forming technique, surface water retaining film increasing is realized so as to enhance water retention capacity, viscoelasticity and glossiness of rice. The productionmethod mainly includes steps of rice washing and draining, conditioning, cooking, aseptic packaging and quick cooling for film forming. By the rice conditioning process and the instant rice production method, industrial continuous production can be realized, and produced instant rice is glutinous without adhesion and great in taste after storage for 60 days.

A beneficiation method for recycling bismuth from molybdenum selecting tailings is characterized by including the following steps that grout is mixed, in the step, concentrated sulfuric acid is added into the molybdenum selecting tailings; flotation roughing is performed, in the step, activator lead nitrate, collecting agent butyl xanthate and foaming agent terpenic oil are added to perform primary roughing to obtain roughed concentrate and roughed tailings; floating scavenging is performed, in the step, the butyl xanthate and the foaming agent terpenic oil are added in the primary scavenging of the roughed tailings, and the butyl xanthate and the foaming agent terpenic oil are added in the secondary scavenging or blank scavenging is performed to obtain scavenged concentrate and flotation tailings; flotation fine selection is performed, in the step, three to four times of blank fine selection is performed on the roughed concentrate to obtain bismuth concentrate and fine selected tailings; the fine selected tailings and the scavenged concentrate are made to return to the flotation roughing operation. According to the beneficiation method, bismuth is recycled from the molybdenum selecting tailings under the faintly acid condition in order to solve the problems that under the alkaline condition, activation of bismuthinite is poor and the recycling efficiency is low. According to the method, the recycling rate of the bismuth is larger than 85%, the Bi content in the bismuth concentrate is larger than 20%, and the method is applicable to molybdenum ore mines containing bismuth.

The invention discloses a multifunctional screening and dust removing device for modified plastic granulation, which comprises a machine body shell, an upper end cover and a screening frame body; the upper end cover is fixedly arranged at the upper end of the machine body shell; the screening frame body is arranged in the machine body shell; a classifying screen is arranged at the bottom of the screening frame body; limiting components are symmetrically arranged on the two sides of the outer wall of the classifying screen, and a plurality of sets of damping springs are connected between the limiting components and the inner side wall of the machine body shell; a mounting groove is arranged on the lower end face of the upper end cover; a reciprocating lead screw is horizontally arranged in the mounting groove; the outer wall of the reciprocating lead screw is sleeved with a moving rod in a threaded mode; and a sweeping frame is fixedly arranged at the bottom of the moving rod. The multifunctional screening and dust removing device for the modified plastic granulation provided by the invention overcomes the defects in the prior art, is reasonable in design, can conduct multi-particle-size screening on modified plastic particles, facilitates bagging and collection, meanwhile, conducts dust removal and adsorption on generated dust, purifies the air environment, and has high social use value and application prospects.

The invention relates to an adsorption material for treating dye sewage and a preparation method of the adsorption material. The preparation method comprises the following steps: putting a copper saltand an organic ligand into an organic solvent, and conducting stirring to obtain a mixture A; putting a non-copper metal salt and an organic ligand into an organic solvent, and conducting stirring toobtain a mixture B; mixing the mixture A and the mixture B, conducting sealing, carrying out heating treatment and cooling, taking the processed material out, and carrying out vacuum drying; and activating the dried material in an organic solvent, and conducting drying to obtain the adsorption material. A non-copper-based metal organic framework material in the adsorption material uniformly growson a copper-based metal organic framework material, and the non-copper-based metal organic framework material and the copper-based metal organic framework material are interwoven in a coordination process, so that the framework stability is enhanced, and the loss of metal ions is avoided.

The invention discloses a method for predicting adsorption performance of modified montmorillonite based on molecular dynamics simulation and water treatment. According to the method, a GROMACS software package is adopted, simulation and analysis of antibiotic adsorption of montmorillonite are provided in software, modeling is performed according to chemical substances required in simulation, simulation calculation is performed in combination with parameters in an experiment, and an obtained simulation result is analyzed. By utilizing a molecular dynamics simulation method, the effect of an adsorption experiment can be visually found in snapshot of the simulation result, an experiment mechanism analysis and judgment can be carried out on the experiment in a simulation range by combining aself-diffusion coefficient, a density distribution function and a radial distribution function, and the modified montmorillonite with the optimal performance is found out by taking the result as a result. According to the invention, the adsorption mechanism of organic montmorillonite for adsorbing organic matters in an experiment can be verified, the adsorption performance of organic modified montmorillonite is facilitated, the adsorption efficiency is improved, theoretical reference is provided for design, research and development and structure optimization of organic pollutant adsorption materials, and the research and development period is shortened.

The invention discloses a phenanthroimidazole triazine polymer and a preparation method thereof. The method comprises the following steps: performing bromination on 9,10-phenanthrenequinone, performing carbonyl protection, performing a substitution reaction on the product and a cyanate, performing oxidization to form 3,6-dicyano-9,10-phenanthrenequinone, performing ring formation on the 3,6-dicyano-9,10-phenanthrenequinone and 4-cyanobenzaldehyde to obtain 2-(4-cyanophenyl)-6,9-dicyano-1H-phenanthro[9,10-d]imidazole (CDPI), and finally performing a ZnCl2 ion thermal polymerization reaction byusing the 2-(4-cyanophenyl)-6,9-dicyano-1H-phenanthro[9,10-d]imidazole as a building block to obtain the phenanthroimidazole triazine polymer. The phenanthroimidazole triazine polymer provided by theinvention has the advantages of a high specific surface area, an abundant pore structure and good heat stability, is simple to prepare and low in cost, and has excellent CO2 adsorption performance under the temperature condition of 273K.

The invention provides a microalgal oil microcapsule and a preparation method thereof. A core material is mainly microalgal oil, and a wall material comprises components of casein, porous starch, beta-clodextrin, chitosan and mannose oligosaccharides, and particularly, the wall material comprises the components in percentage by mass as follows: 40%-60% of casein, 30%-40% of porous starch, 1-10% ofbeta-clodextrin, 1-10% of chitosan and 1-10% of mannose oligosaccharides; and the core material also contains an emulsifier, a stabilizer and an antioxidant. The microalgal oil microcapsule has highoil content, being 50% and embedding rate, being higher than or equal to 95%, bulk density is higher than or equal to 0.4 g / ml, and fluidity is very good; the surface oil content is 0.58%-1.75%, and is low, the peroxide value is 0.023-0.22 g / 100 g and is low, and the microcapsule can be stored for three months or longer at 40 DEG C, which indicates that the shelf life is two years or longer at 25DEG C, so that the microcapsule has quite high stability; and the microcapsule disperses well in water, is noncaking, and cannot change original solubility and dispersibility when added to other foodand can be directly added to powdered food, so that the application range is wide.

The invention relates to the technical field of magnetic separation, in particular to a magnetic nanometer material as well as a preparation method thereof and application of the magnetic nanometer material in radioactive element treatment. Based on magnetic nanometer particles, a series of magnetic composite nanometer particles with magnetic ferric oxide nanometer particles as a basis are constructed; at the same time that the size, the morphology and the like of the material are selectively regulated, the magnetic composite nanometer particles with a function of specifically bonding to target radionuclides are obtained through surface modification; the prepared magnetic composite nanometer particles are used for separation and qualitative and quantitative analysis of a sample containingradionuclides; and finally, the magnetic composite nanometer particles are used for treatment of radioactive wastewater, and recycle utilization of the magnetic composite nanometer particles is realized through a series of treatment processes including adsorption, separation, elution and the like.

The invention relates to the technical field of dust prevention for rubber belt conveyors, and specifically relates to a dustproof device and method for a rubber belt conveyor. The device comprises amachine tool, wherein a conveyer is arranged at the center of the top end of the machine tool; a dustproof cover is arranged at an upper part outside the conveyer; a fixed rod is arranged at the bottom ends of the left side and the right side, and the top end of the inner wall of the dustproof cover separately; a guide rail is arranged between the fixed rods at the left side and the right side andthe fixed rod at the top end separately; a moving trolley is slidably installed on the guide rails at the left side and the right side separately; a drive device is installed on each moving trolley;a connection rod is arranged on each moving trolley; an electrostatic dust removal ball is arranged on the head part of each connection rod; a main control box is arranged on the outer sidewall of thedustproof cover; and a control panel is installed on the sidewall of the main control box. The device is simple in structure, and easy to install and detach; through the design of an electrostatic dust removal structure, the dust removal efficiency is greatly increased; and meanwhile, a self-power supply mechanism is arranged, so that consumption for electric energy is greatly reduced, and the device is green and environment-friendly, and great in practicability.

The invention discloses an ambient air volatility organic compound dewatering and enriching method. The method comprises the following steps of dewatering an ambient air sample and enriching volatileorganic compounds; purging an enrichment trap through helium, and purging and removing water and oxygen existing in the enrichment trap; heating a water removal trap and the enrichment trap, purging the water removal trap through nitrogen or zero-order air to remove ice condensed in the water removal trap, desorbing substances adsorbed by the enrichment trap, and feeding into a detector for detection through the helium; and cooling the water removal trap and the enrichment trap to a set temperature, and waiting for sampling triggering to return to an ambient air sample enrichment process. Theenvironment air volatility organic compound dewatering and enriching method is easy and convenient to control and is capable of improving accuracy. In addition, the invention also discloses an environment air volatility organic compound dewatering and enriching device.

The invention belongs to the field of polymer binder materials and powder metallurgy, and particularly relates to a titanium alloy powder injection molding special material and a preparation method thereof. Only surface modification of coarse titanium or titanium alloy powder is required, a simple layer-by-layer self-assembling technology is adopted, titanium dioxide particles and a polyelectrolyte are led into the surfaces of existing coarse titanium or titanium alloy powder particles, and accordingly coarse titanium or titanium alloy powder particles of a core-shell structure can be obtained by means of preparation; and then a titanium alloy product which is low in cost, shrinking percentage and sintering density and is of a porous structure can be prepared by mixing with a polymer binder, powder injection molding, catalytic debinding and vacuum sintering.

The invention provides a matrix additive for promoting plant growth, consisting of the following raw materials in parts by weight: 10 to 15 parts of glucose, 5 to 10 parts of super absorbent resin, 40 to 50 parts of wood carbide, 1 to 3 parts of complex inocula, 5 to 8 parts of cow dung, 1 to 2 parts of Chinese red pepper branches, 0.2 part of tridecanol, 0.1 to 0.2 part of zinc nitrate, 0.2 to 0.3 part of ferrous sulfate, 0.1 to 0.2 part of magnesium sulfate, 0.1 to 0.2 part of ammonium molybdate, 0.1 to 0.2 part of copper nitrate, 0.2 to 0.5 part of calcium nitrate, 0.1 to 0.2 part of potassium dihydrogen phosphate and 1 to 2 parts of urea. According to the matrix additive provided by the invention, nutrient substances required for plant growth can be provided, the immune function can be improved and the enzyme activity can be adjusted, so that the roots of vegetation can quickly root, the germination of buds can be promoted, and the top of plants can quickly grow leaves; and meanwhile, the matrix additive can provide sustained antiseptic, antibacterial and sterilization protection on the plants, and can be used for effectively avoiding the rot of the plant roots and promoting the growth of the plants.