110results about How to "Novel preparation process" patented technology

The invention relates to a preparation method of a polyolefin microporous film, aiming to solve the problems that the traditional preparation method of the polyolefin microporous film has complicated process, low production speed and poorer uniformity of microporous space. A polyolefin microporous film product is prepared by the following steps: a. base film preparation by casting; b. multi-stage annealing processing; c. hole forming by multipoint stretching; and d. heat setting processing. The method does not need solvent, has no pollution to the environment, low equipment investment, high production speed and uniform microporous space, and is suitable for preparing various polyolefin microporous films used for poromeric materials, ultra filtration, film filtration, super capacitors, battery diaphragm materials and the like.

The invention relates to a method for preparing an urchin-shaped hydroxyferric oxide and urchin-shaped ferric oxide nano material, which adopts a glucose guiding hydrolysis process and an annealing process and specifically comprises that: a ferrous salt is used as a raw material, the hydrolysis reaction is guided by adopting a saccharide structure indicator, the weight ratio of the glucose to an iron source is 0.5 to 5, and the molar concentration of the saccharide structure indicator is 0.02 to 0.2M; and then, an oxidizing gas is introduced into the raw materials at the temperature of between 25 and 100 DEG C, a yellow green urchin-shaped hydroxyferric oxide product is obtained through stirring reflux reaction, washing and filtration, and the product is annealed to form the urchin-shaped ferric oxide nano material with adjustable specific surface area and topography. The method has the advantages of simple operation, low requirement for equipment, low cost and high efficiency, and is easy in industrial application and popularization; and the synthesized nano material has the advantages of high purity, little impurity content and large specific surface area, can obviously improve the performance of a catalyst and a battery, and has remarkable economic benefit and social benefit.

The invention relates to a magnetic bionic adsorbent and an application of the magnetic bionic adsorbent in treating acid wastewater containing uranium. A solvothermal method for preparing Fe3O4 by taking PSSMA (poly (4-styrene sulfonate-copolymer-maleic acid) sodium salt) as a surfactant is improved, grain sizes are uniform, and Fe3O4 magnetic nanoparticles can be synthesized on a large scale; biomolecule dopamine is polymerized in a trihydroxymethyl aminomethane buffer system and coats the surfaces of the Fe3O4 magnetic nanoparticles, and the novel magnetic bionic adsorbent with a core-shell structure is established. The magnetic bionic adsorbent has excellent hydrophilicity and larger specific surface area due to the the polydopamine structure of a shell layer, rich functional groups on the surface of the magnetic bionic adsorbent have high uranium adsorption capacity in a wider acidity range, the magnetic bionic adsorbent has higher uranium adsorption capacity and good selectivity, and uranium adsorbed on the surface of the adsorbent can be easily washed with a 0.1 mol / L (NH4)2CO3 solution and can be recycled conveniently.

The invention is a hollow glass desiccant and process for preparation, which belongs to desiccating agent of zeolite molecular sieve, particularly relates to a hollow glass desiccant and process for preparation, which comprises the steps as follows: 3A molecular sieve original powder 50.0-8.0.% and clay 20.0-50.0% are mixed to form main component, then water-soluble adhesive agent 0.1-5.0% (Wt%) and proper amount of water which calculate the main components by percentage by weight are added for balling and pelleting, and water solution of compression strength reinforcing agent 0.1-5.0% (Wt%) which calculate the main component by percentage by weight is sprayed on a balling billet body, then the balling billet body is covered, reinforced, dried in nature, blown, and polished and baked at 480-700 DEG C for 2-6 hours, finally the desiccant can be obtained. The desiccant components of the invention are reasonably matched, the preparation is novel, the structure of the device is simple, and energy is saved. The hollow glass desiccant which is made achieves an idea effect in some aspects of the technical indicator of special requirements for hollow glass desiccant such as compressive strength, powder dropping rate and selective adsorption for each air component and the like.

The invention relates to a production process of a prestress FRP-rib (fiber reinforce plastic-rib) concrete pipe pile. The production process is characterized by comprising the following steps of 1) concrete production, 2) FRP-rib frame skeleton production, 3) end board production, 4)pulling board production, 5) sleeve anchoring, 6) installation of the FRP-rib frame skeleton, 7) concrete material distribution, 8) moulding, 9) prestress tension, 10) centrifugal processing, 11) maintenance and 12) demoulding. By creatively choosing the FRP-rib as a substitute of the pipe pile steel bar and utilizing a tension method applicable to the FRP-rib, structural durability is improved. Compared with common prestress pipe piles, the prestress FRP-rib pipe pile has higher corrosion resistance; while compared with a FRP rib pile, the prestress FRP-rib concrete pipe pile has the advantages of high strength and high bearing capacity. Besides, with novel production process of reasonably utilizing a FRP-rib tension process on a pipe pile, and good effects are achieved.

A composite spherical active carbon adsorbent is prepared by the following raw materials by weight: 100-120 parts of active carbon, 20-25 parts of clay, 6-8 parts of glyceryl triacetate, 15-20 parts of wooden saw dust, 5-7 parts of eleaostearic acid, 15-20 parts of walnut shell, 7-9 parts of polyacrylamide, 3-5 parts of titanium dioxide, 4-5 parts of modified diatomite, and a proper amount of water. The spherical active carbon adsorbent has advantages of reasonable composition, novel preparation technology and simple equipment structure, the prepared finished product reaches an ideal effect on the indexes of compressive strength, powder drop rate, iodine adsorption, benzene adsorption and desulphurization; and the spherical shape makes it easy for the adsorbent to flow, and makes it convenient for the adsorbent to be subpackaged and packaged by using current various packaging equipment. Titanium dioxide is used to make the adsorbent provided by the invention have advantages of very strong UV absorption performance, infrared reflection characteristic, self-cleaning performance, and sterilization and deodorization in the medical field.

The invention relates to a preparation method for a novel iron / carbon nano-tube grading nano-composite material. The method comprises the following concrete steps: adopting ceramic arks to respectively load a precursor of iron and an organic compound of carbon source; placing the ceramic arks in a tube furnace, heating to a temperature of 300-450 DEG C under the protection of inert gas, and holding the temperature for 30 minutes; continuously heating to the temperature of 450-900 DEG C, and holding the temperature for 1-4 hours; after completing the reaction, cooling to the room temperature along with the furnace under the protection of inert gas to obtain the novel iron / carbon nano-tube grading nano-composite material. According to the present invention, the preparation process is simple, and the forming mechanism is unique; the addition of any templates, any surfactants or any structural guideline agents during the reaction process is not required; the method has characteristics of low cost and high efficiency, and is easy to industrially apply and popularize; the prepared novel iron / carbon nano-tube grading nano-composite material has strong magnetic responsibility; the morphology and the composition of the iron / carbon nano-tubes can be controlled by the reaction temperature, the reaction time and the feed ratio.

A process for preparing the cobalt oxide used for the positive electrode of Li ion battery includes such steps as reaction of cobalt chloride (or nitrate) solution on ammonium bicarbonate solution to obtain cobalt carbonate, calcining at 500-1000 deg.C to obtani Co3O4, pulverizing and classifying.

The invention relates to a preparation method of silver sulfide nano particles, belonging to the technical field of nano composite material. The preparation method comprises the following steps: preparing silver ion protein mixed solution; preparing silver-sulfur protein mixed solution; carrying out centrifuge treatment and vacuum drying treatment and preparing into the silver sulfide nano particles. The method has simple and novel technique, little equipment quantity and low energy consumption and is environment-friendly and the prepared nano particle is spherical.

A flexible piezoelectric nanofiber membrane and a preparation method and application thereof are mainly related to the field of piezoelectricity. The preparation method of the flexible piezoelectric nanofiber membrane dopes ZnO nanoparticle-modified PVDF (polyvinylidene fluoride) fiber to the PVDF fiber by means of electrostatic spinning, so that the piezoelectric performance of the final flexiblepiezoelectric nanofiber membrane is improved; the preparation method is novel and simple and low in manufacture cost and is easy to popularize and apply. Therefore, the flexible piezoelectric nanofiber membrane and the preparation method thereof have the advantages that the preparation process is simple, the cost is low, large-scale preparation is easy to implement, the prepared flexible piezoelectric nanofiber membrane has good piezoelectric performance, a piezoelectric device (application of the flexible piezoelectric nanofiber membrane) has better electrical performance output, and accordingly, the flexible piezoelectric nanofiber membrane and the preparation method and application thereof have great popularization and application value and have a promising application prospect.

The invention provides a graphene electro-optical modulator and a preparation method thereof. The graphene electro-optical modulator is in a plate capacitor structure and comprises an optical substrate, a bottom graphene layer, an insulating layer and a top graphene layer, and the optical substrate, the bottom graphene layer, the insulating layer and the top graphene layer are arranged sequentially from bottom to top. The top graphene layer and the bottom graphene layer are in mutual insulation through the insulating layer, the top graphene layer is above the bottom graphene layer, and an external modulation voltage is applied to the bottom graphene layer and the top graphene layer. The graphene electro-optical modulator is an active Q modulation device independent of a waveguide structure on the basis of a graphene electro-optical modulation technology; modulation depth is changed by amplitude variation of the external periodic voltage, and light modulation depth requirements of different laser parameters can be met; after the graphene electro-optical modulator is inserted into a laser, high-pulse-energy controllable-repetition-rate pulse laser output can be achieved. Therefore, the graphene electro-optical modulator has a promising market prospect.

The invention discloses an external force triggered type response enhanced self-powered gas sensor and a preparation method thereof, and belongs to the technical field of sensors. The external force triggered type response enhanced self-powered gas sensor comprises a gas sensitive element, a friction nano power generating device, a detecting circuit, a rectifying device and an ultraviolet light source. An alternating signal output by the friction nano power generating device is converted into a unidirectional output signal by the rectifying device to be connected with an ultraviolet light source disposed directly facing the gas sensitive element and the gas sensitive element. A directional electric field is formed on the surface and the inside of a gas sensitive material, thereby promotingthe resolution of photogenerated carriers and suppressing the recombination of the photogenerated carriers, the quantum efficiency of the light enhancement is improved, and the gas sensitive effect under the ultraviolet radiation is enhanced. The external force triggered type response enhanced self-powered gas sensor not only has a novel structure, but also has a simple preparation process, low processing cost and high practicability, has great promotion to the development of gas sensors, and has great significance for the construction of gas sensor network nodes.

The invention discloses a preparation method of an antistatic polyvinylidene fluoride / polylactic acid composite porous fiber membrane, belonging to the field of porous fiber membranes. In the present invention, polyvinylidene fluoride and polylactic acid are respectively dissolved in a solvent, and additives are added to obtain a spinning liquid, and the spinning liquid is prepared by electrospinning to obtain a composite fiber, and the fiber obtained by spinning is immediately added to the solvent Perform annealing treatment to obtain a composite porous fiber membrane, and load nano-zinc oxide antistatic particles in the composite porous fiber membrane to obtain an antistatic composite porous fiber membrane. Hydrophilic modification of polyvinylidene fluoride, and the use of zinc acetate and diethanolamine to prepare a porous fiber membrane loaded with nano-zinc oxide conductive particles, the obtained membrane not only has excellent mechanical strength, but also has good antistatic effect, and has a wide range of applications application prospects.

In this invention, we extract raw polysaccharides from changium root named A B C respectively, and purify to get 6 polysaccharides I,II,III,IV,V,VI. After sulfation, we get sulfated polysaccharides A1, B1,C1. A1 has two sulfate groups on each monosaccharide at the average while B1 and C1 have three. The sulfated polysaccharides' molecular weight is more than 2 million D. The glycoside link is alpha type. The whole procedure of changium root sulfated polysaccharides is as followings: extract raw polysaccharides from changium root, and then get the polysaccharides sulfated. It is advantageous in simplied-manipulation and low cost. The pharmacological experiments prove its obvious suppression on rat transplanting tumor(S-180) and the reduction of platelet aggregation ratio and whole blood viscosity. It also reduces coagulant time.

The invention provides a preparation method of a nickel-rich concentration gradient nickel-cobalt-manganese anode material with low acidity or alkalinity and high processability. The preparation method comprises the following steps: firstly mixing a nickel-cobalt-manganese compound and a lithium compound in a proportion of Li to M being 1-1.1, performing first sintering under certain conditions of temperature, airflow and time, and then smashing and sieving a first sintering product to initially prepare and obtain a nickel-cobalt lithium manganate intermediate product; then uniformly mixing the intermediate product with an organic matter in a certain proportion, performing second sintering through a period of time under a certain temperature condition, and then smashing and sieving a second sintering product to obtain nickel-cobalt lithium manganate with low acidity or alkalinity and high processability. The material has the advantages of novel preparation technology and low acidity or alkalinity, and is high in processability.

The invention relates to a preparation method of superfine scandium oxide nano powder. The preparation method comprises the following steps: a) adding ethanol, urea and ammonium sulfate into an aqueous solution containing Sc<3+>, uniformly mixing to obtain a mixed solution, and performing centrifugal separation after reacting for a specified time at 85-95 DEG C to obtain a sediment; and b) washing and drying the sediment prepared in step a), and calcining at 1,000-1,300 DEG C to obtain the superfine scandium oxide nano powder.

The invention provides a magnetic alloy hollow microsphere and a preparation method thereof. The components of the microsphere comprise cobalt and nickel. The structural formula of the microsphere isshown as Capable of<x>Ni<1-x>, wherein x is greater than or equal to 0.14 and less than or equal to 1. The microsphere is of a hollow structure and has the diameter being 0.32-3.35 microns, the wall thickness being 4-370 nm and the saturation magnetization intensity being 80.4-152.89 emu.g<-1>. The microsphere is prepared through a mixed solvent high-temperature liquid phase reduction method. Thepreparation method comprises the steps of adding an organic solvent, water and a surface active agent into three flasks in proportion to be stirred for 10 min; adding metal salt to be subjected to electric stirring for 2 h, and dropwise adding a reducing agent to be subjected to electric stirring for 1 h; conducting reflux condensation at 170-197 DEG C for 3-4 h, and conducting repeated magnetic separating and washing through ethanol after cooling; and finally, conducting drying to obtain the required magnetic alloy hollow microsphere. The magnetic alloy hollow microsphere is made of a raw material which is low in price and easy to get. The magnetic alloy hollow microsphere is low in cost, simple in process, high in efficiency and easy to popularize. A magnetic ball chain has the properties of size and composition adjustability and can be applied to magneto-rheological, magnetic separation, catalytic and electrode materials and microwave absorption or high-density magnetic recording materials.

The invention discloses a perovskite composite oxide loaded platinum catalyst and preparation and application thereof. The preparation is characterized in that the loaded platinum catalyst is preparedfrom SBA-15 as a hard template agent, a chloroplatinic acid aqueous solution as an active component precursor and a YCoxFe1-xO3 perovskite composite oxide as a carrier through impregnation, drying, calcination and reduction of a sodium formate aqueous solution, and is used for a selective hydrogenation reaction of cinnamyl aldehyde. Compared with the prior art, the perovskite composite oxide loaded platinum catalyst has the advantages that Pt particle distribution is uniform, the specific surface area and the pore volume are large, and the loaded platinum catalyst is used for the selective hydrogenation reaction of cinnamyl aldehyde, is higher in catalytic activity, is simple in preparation process, is easily produced industrially, and is environmentally friendly in the reaction process.

The invention discloses a preparation method of 2-methyl-8-aminoquinoline. The preparation method is characterized in that the 2-methyl-8-aminoquinoline is prepared from o-nitrophenol through a process line of reduction, cyclization and amino substitution. An oxidant is selected from one or more of the o-nitrophenol, ammonium ceric nitrate, vanadic acid and iron oxide, and a catalyst is selected from ammonium chloride-cobalt chloride, palladium-aluminum trioxide or aluminum trioxide-silicon dioxide.

The invention discloses a preparation method of 2-methyl-8-aminoquinoline. The preparation method of 2-methyl-8-aminoquinoline comprises the step of ammoniating 2-methyl-8-bromoquinoline in a solvent at 60-120 DEG C under the action of catalyst and strong alkali to obtain the 2-methyl-8-aminoquinoline, wherein the catalyst is one or more selected out of copper acetylacetonate, iron acetylacetonate, cobalt acetylacetonate and zinc acetylacetonate, the solvent used is one or more selected out of dimethylsulfoxide, N, N-dimethylformamide, acetylacetone, tetrahydrofuran and N-methylpyrrolidone, and the strong alkali is one or more selected out of caesium carbonate, caesium hydroxide, potassium carbonate and potassium hydroxide. The preparation method of the intermediate 2-methyl-8-bromoquinoline comprises the step of performing a cyclization reaction on o-bromoaniline and crotonic aldehyde in a solvent in the presence of oxidant and mollient, so as to obtain the 2-methyl-8-bromoquinoline, wherein the oxidant is selected out of one or more of nitrobenzene, 2-nitrobromobenzene, ammonium ceric nitrate, vanadic acid and iron oxide, the mollient is selected out of one or more of glacial acetic acid, hydrochloric acid, ferrous sulfate and boric acid, and the solvent is selected out of one or more of hydrochloric acid, sulfuric acid and chlorobenzene.

The invention relates to a high-strength fireproof insulation board with a tongue-and-groove structure and a manufacturing method of the high-strength fireproof insulation board. The insulation boardcomprises upper layer color steel, a common rock wool board and lower layer color steel, and the common rock wool board is located between the upper layer color steel and the lower layer color steel.The upper surface and the lower surface of the common rock wool board are bonded with the upper layer color steel and the lower layer color steel correspondingly, the upper layer color steel and the lower layer color steel are connected in a pressing mode at the left ends and the right ends to form a tongue and groove, the tongue and groove is provided with a cavity, the cavity is internally provided with a high-density rock wool filling block, the cavity of the tongue and groove is filled with the high-density rock wool filling block, the left end and the right end of the common rock wool board are flush cutting surfaces, the inner end of the high-density rock wool filling block is tightly attached to the cutting surface of the common rock wool board, and the outer end of the high-densityrock wool filling block is tightly attached to an inner cavity wall of the tongue and groove. Compared with the prior art, the tongue and groove is good in insulation performance, a high-density rockwool material is adopted, the hardness is high, the smooth insertion connection of the tongue and groove is ensured, and the high-strength fireproof insulation board has the advantages of good insulation performance, high strength, fire prevention and the like.

The invention relates to an instant waxberry lozenge and a preparation method thereof. The instant waxberry lozenge comprises the following components in parts by weight: 10 to 20 parts of waxberry powder, 20 to 30 parts of white sugar, 30 to 40 parts of sorbitol, 10 to 20 parts of adhesive, and 2 to 5 parts of lubricating agent. The method comprises the following preparation processes of: pre-treating waxberry to obtain waxberry juice and waxberry residue, respectively performing spray drying and superfine crushing on the waxberry juice and the waxberry residue to obtain the waxberry powder, mixing the waxberry powder, the sweetening agent, the adhesive and the lubricating agent in a ratio, granulating, tabletting and drying, and thus obtaining a finished product. The waxberry powder is prepared by the spray drying and superfine crushing technology, so that the absorption and utilization rate of active ingredients of the waxberry is improved; the waxberry residue is reasonably utilized, so that the waste is changed into valuable, and the costs of the raw materials are reduced; and the product is prepared into the lozenge, so that the problems about moisture absorption and caking of the waxberry powder and degradation and subsequent precipitation of anthocyanin in the juice are solved, and the lozenge is convenient to store and transport. The preparation method is simple and low in cost, the instant waxberry lozenge has rich nutrition, and the nutrition and the flavor of the waxberry are kept.

The invention discloses a method for printing Chinese art paper through an offset press. By means of a supporting and mounting mode, the light and thin Chinese art paper is combined with a paperboard or printable plastic film, so that the Chinese art paper has certain stiffness and meets the printing requirement of the offset press, then the printed Chinese art paper is separated from the paperboard or the printable plastic film through the printing and tearing processes, and accordingly the Chinese art paper process is finished, printing of the Chinese art paper is achieved, and the user requirements of Chinese art paper printing are met. The whole manufacturing technology is unique, novel, and rigorous and scientific in operation step, and the printed Chinese art paper can be mounted and stored for a long time and is particularly suitable for being used for manufacturing various archaistic volumes or painting albums.

The invention belongs to the technical field of nano hybrid materials, and particularly relates to a silicon dioxide modified organosilicon defoaming agent and a preparation method thereof. The preparation method of the defoaming agent comprises the following steps: firstly, mixing an organosilicon raw material I with a catalyst, heating to 90-130 DEG C under a stirring condition, reacting for 20-60min, and then adding modified nano SiO2 to continuously react for 30-60min to obtain a compound A; or adding the modified nano SiO2 into the organosilicon raw material II to react for 30-60 minutesat 30-130 DEG C to obtain a compound B; adding a blocking agent into the compound A or the compound B for blocking, then removing unreacted catalyst, and carrying out reduced pressure distillation andcooling to obtain the defoaming agent. According to the preparation method, the organic silicon and the silicon hydroxyl on the surface of the SiO2 are combined by chemical action through adding thesurface-modified nano SiO2 to obtain the defoaming agent with a spatial network structure; the defoaming effect of the defoaming agent is good, the durability is good, and the defoaming efficiency canbe regulated and controlled.

The invention discloses a preparation method of dandelion tea. The preparation method comprises the following steps of picking fresh dandelion leaves and eucommia leaves, performing thorough cleaning and performing spin-drying; performing shredding; performing microwave fixation ; performing blow-drying with hot blast; adding honey and performing twisting for 5-6 times; adding honeysuckle tea, dandelion roots, dried lotus leaves , green tea and Chinese wolfberry fruits and performing mixing; performing low-temperature freezing and drying; performing crushing; and performing vacuum packing . The dandelion tea prepared by the method disclosed by the invention is delicately fragrant in taste, slightly bitter, sweet in aftertaste and rich in nutrition.

The invention discloses a zinc-air battery and a preparation method and application thereof. A three-dimensional carbon nanotube jungle composite material is used as an oxygen reduction reaction (ORR)and oxygen evolution reaction (OER) electrocatalyst, the three-dimensional carbon nanotube jungle composite material is loaded on a conductive substrate to be used as an air electrode, and then the air electrode, an electrolyte and a negative electrode conventionally form the zinc-air battery. The invention provides a new way for preparing the efficient and controllable three-dimensional CNT through adopting a one-step pyrolysis gas phase method. The pipe diameter of the CNT and the particle size of the embedded metal particles are fine and uniform and are uniformly dispersed, and the CNT hasa large specific surface area and rich micro / nano hole channels, so that more active sites and substance transmission can be exposed, extremely small overpotential and excellent stability are shown in ORR and OER processes, and the material is successfully applied to the ZAB as a positive electrode catalyst, and shows good cycling stability and relatively small potential polarization.

The invention relates to the technical field of boards, in particular to a reinforced composite board and a production technology thereof. The reinforced composite board comprises a color steel plate layer formed by a steel plate which is subjected to baking varnish treatment, and a fireproof material layer compounded on the color steel plate layer; and is characterized in that at least one reinforced rib layer is arranged between the color steel plate layer and the fireproof material layer or inside the fireproof material layer. The invention has the beneficial effects that the structure is novel and simple, and the original board is internally additionally provided with the reinforced rib layer, thus greatly improving tensile property and toughness and using strength of boards, preventing cracking of core material caused by heat expansion and cold contraction, transportation, installation and the like, improving the repeated using property of a product, achieving the purpose of saving energy, and having the advantages of green and environmental protection property, non-ignitable property and fire resistance, high efficiency and heat insulation, ventilation and mould resistance, water resistance, good weather resistance, strong revolving capability and the like; in addition, the production technology is simple, the cost is low, and the properties are good, thus being widely applied to the fields of temporary buildings, road sound-proof walls, refrigeration, freezing storehouses and the like.

The present invention provides a preparation method of chemical compound of trifluoromethylhypnone shown by formula (I), the method includes that: trifluoromethylphenyl halides shown in formula (II) and ethenyl-ethers type shown in form (III) are adopted as the raw material , reaction is carried out for 1-50 hours under agitation under 50 DEG C to 150 DEG C in an apolar aprotic solvent, with the presence of catalyst of palladium acetate and macroporous alkalescence styrene anion-exchange resin shown in form(IV) , after the reaction, the reaction liquid is isolated and purified to obtain the chemical compound of trifluoromethylhypnone; the preparation method has novel technicst, low cost, easy operation, recyclable resin, with minor environmental pollution because of absence of organic phosphine ligands, little molecular organic amine and inorganic alkali.

A compound filter plate of a plate-and-frame type filter press pertains to the technical field of solid-liquid separation and aims at solving the problems of unreasonable structure of the filter plate and low overall stiffness and strength of the existing plate-and -frame type filter press. A plat disk scroll spiral casing is clamped and embedded in the filter plate body, the inner end head of the casing is closed, and the outer end pipe connector part is fixedly connected on a side frame of the filter plate. The structure filter plate is novel, the usage is convenient, and the compound filter plate is applicable to all types of plate-and-frame type filter presses for assembly and can be widely used in the solid-liquid separation of various materials in chemical industry, foods, medicine, metallurgy selection, environmental protection sewage treatment and other industrial fields, thus having broad popularization and application prospects.

The invention discloses a hollow sea urchin type magneto-optic nano-composite medicine carrying system and a preparing method thereof, and belongs to the technical field of nano-composite materials. By adding lauryl sodium sulfate in a solvothermal method, Fe3O4 hollow ball with good water solubility can be prepared and obtained within a short period of time. The hollow sea urchin type nano-composite medicine carrying system wotj an Fe3O4 hollow ball @ ZnO nano-bar structure can be prepared by organically combining with ZnO nano-bars by means of self-assembly. The system has both optical and magnetic properties, and has a large specific surface area, which facilitates medicine loading. Moreover, the preparing method has simple steps, gentle conditions and low cost, and is adapted for large-scale production.