114results about How to "Adjust porosity" patented technology

The invention relates to an aeroengine case seam allowance size repairing method. The porosity and hardness of a coating and the content of oxides in the coating can be effectively adjusted by controlling the plasma spraying power and the heating process of spraying powder during flying, and heat stress of the coating is reduced. The hardness and thermal expansion coefficient of the prepared nickel-aluminum coating are equivalent with those of a case, the bonding strength of the coating is far higher than the stress strength of a case seam allowance under the given working condition, and the use working condition of the aeroengine case can be met.

The invention discloses a silicon-based cathode composite material for a lithium ion battery and a preparation method thereof. The cathode composite material is a Si / CuOx / C composite material (0<=x<=1) with a porous structure. Silicon with a porous structure is used as a base, and CuOx particles are inserted in the pores, and carbons with different forms are distributed on a surface and pore walls of the silicon-based material. The preparation method of the cathode composite material comprises steps that silicon material realizes pore-forming through an in situ catalytic reaction between silicon and halogenated hydrocarbon, and reaction condition parameters are regulated to control pore size, distribution and amount of porosity of the silicon material; a post-modification technology is employed to carry out modifications on the surface and the pore walls of the porous silicon, so as to obtain the Si / CuOx / C composite material with a porous structure. The porous silicon-based cathode composite material has low production costs, simple process and no pollution, and is suitable for industrialized production; besides the porous silicon-based cathode composite material has high charge and discharge capacity, small initial irreversible capacity and good cycle performance.

The invention discloses a silicon carbide / copper silicon alloy codual-continuous composite and a preparation method thereof. The composite material comprises the following components in volume fraction: 35-50 percent of porous silicon carbide ceramics and 50-65 percent of copper silicon alloy, wherein the atomic percentage composition of silicon in the copper silicon alloy is 15-40 percent. The preparation method comprises two key processing steps of: preparing the porous silicon carbide ceramics and vacuum infiltrating porous silicon carbide through the copper silicon alloy. Silicon is adopted as an alloying element of copper, so that the problems of wettability and reactivity between copper and silicon carbide are solved simultaneously. In addition, the invention adopts a vacuum infiltrating process as a near net forming preparation process, and specialized die casting equipment and a specific module are not needed, so that the preparation process is simple, has low cost, and can be used for manufacturing various composites with complicated shapes.

A preparation method for calcium polyphosphate-tricalcium phosphate bone bracket comprises the steps of proportionally ball-milling and mixing calcium phosphate ceramic powder, size stabilizer methylcellulose, surfactant polyvinyl alcohol, foaming agent hydrogen peroxide and de-ionized water in order to prepare compound ceramic slurry, pouring the slurry into a mould, drying in an oven with four-step drying method, and then sintering the dried green body under high temperature in order to acquire porous calcium phosphate ceramic bracket. The big aperture of a big pore of the acquired porous calcium phosphate ceramic bracket of the invention is 200 to 600 microns, the micro-pore aperture thereof is 2 to 5 microns, the whole porosity thereof is from 60 to 90 percent and the compressive strength thereof is 0.5 to 7.0 Mpa. Furthermore, the method has low cost and high efficiency and can be applied to large-scale production.

The invention discloses a preparation method of a corn alcohol-soluble protein nanofiber membrane used for cell culture. The corn alcohol-soluble protein / polyvinyl alcohol nanofiber membrane is a cell culture carrier material, which comprises biodegradable natural polymer corn alcohol-soluble protein and polyvinyl alcohol as a biocompatible high polymer. The transverse dimension of a ribbon-like corn alcohol-soluble protein / polyvinyl alcohol nanofiber is 625 to 3,920 nanometers; and the nanofibers are stacked into the nanofiber membrane randomly. The corn alcohol-soluble protein / polyvinyl alcohol nanofiber membrane is made through electrostatic spinning process, the preparation method is simple and effective, preparation equipment is simple, the stability is high, and indexes such as the diameters of the nanofibers and the porosity of a membrane material and the like can be regulated through changes of the condition of the electrostatic spinning process. The experiment proves that compared with a common PC (polycarbonate) plate, the corn alcohol-soluble protein nanofiber membrane material contributes to proliferation of mouse embryonic stem cells, and the diameter of the stem cell clone cultured for 5 days reaches 100 micrometers. Moreover, the nanofiber membrane can be recycled after being steamed and pressed for 30 minutes at 120 DEG C.

The invention discloses a preparation method of a hyperelastic porous CuAlNi high temperature shape memory alloy, which comprises the following steps: preparing a CuAlNi alloy ingot by adopting an electric arc melting or induction melting method; pressing NaAlO2 powder into a green body and sintering the green body in the air atmosphere to obtain an NaAlO2 block body; placing the NaAlO2 block body into the bottom of a tubular furnace capable of moving up and down, placing the CuAlNi alloy ingot on the NaAlO2 block body and carrying out heat preservation in the vacuum atmosphere; and then filling protection gas, keeping filling the protection gas, removing the tubular furnace downwards out of a heating region, cooling the obtained product, immersing the cooled product into weak acid to carry out ultrasonic oscillation, then placing the product into a vacuum furnace, carrying out heat treatment on the product in the protection atmosphere and quenching into ice water to obtain the hyperelastic porous CuAlNi high temperature shape memory alloy. The porous CuAlNi shape memory alloy prepared by the preparation method has excellent hyperelasticity and mechanical property at high temperature and also shows excellent cycling stability.

The invention discloses a method for preparing low-oxygen aluminum nitride powder by auto-igniting synthesis, which is characterized in that the method comprises the processing steps of treating raw materials, compounding, mixing, reacting and finishing. The synthesized aluminum nitride has high nitrogen content, low oxygen content and fine granularity; and is suitable for producing high-heat conductive aluminum nitride ceramic base plates, ceramic insulating radiation fins and aluminum nitride-based structural ceramics. Owing to much higher heat conductivity of aluminum nitride than common ceramic materials, the aluminum nitride powder is also generality used as a raw material for producing ceramics. The aluminum nitride powder obtained by auto-igniting synthesis has the advantages of high purity, fine granularity, narrow particle size distribution, high sintering activity, and the like. Furthermore, the invention and is especially suitable for sintering high-heat conductive aluminum nitride ceramics.

The invention provides a method for preparing an electrode of ZIF-derived CoMoO4. the method is characterized in that the method uses a high temperature calcined ZIF-67 as a precursor to prepare CoMoO4 by hydrothermal method., that steps are as follow: (1) molybdate and a compound containing a Co salt are taken and stirred in deionized water until the molybdate and the compound contain the Co saltare dissolved; (2) a small amount of ZIF-67 power are added, stirred to a homogeneou solution; 3, that mixture is transferred to a reaction kettle, and the mixture is cooled to room temperature afterreaction for 2h; (4) alternately cleaning and drying are performed for 24h; (5) Ultrasonic cleaning is performed for 30 min, deionized water cleaning and ultrasonic are performed, drying is performedfor 12 h; 6) that graphite paper is dried at constant temperature, the required material is ground in a mortar, a small amount of solvent is added, uniformly dropping on the dried sheet layer, and then drying is performed, and 7) a regular-shaped electrode of ZIF-derived CoMoO4 is performed. The invention overcomes the problems of poor stability and small specific capacitance of metal oxide electrode in the prior art, and provides a preparation method of CoMoO4 derived from metal oxide electrode material ZIF with high specific capacity and good stability.

The invention provides a preparation method of a multilayered gradient ceramic membrane. According to the method, ceramic membrane slurry having different chemical components and grain sizes is printed on a flat plate type ceramic membrane supporting body by adopting a silk-screen printing technology and is commonly sintered with the flat plate type ceramic membrane supporting body once, so that the multilayered gradient ceramic membrane having different chemical components and pore structures is formed on the surface of the supporting body. With the adoption of the silk-screen printing technology, the thickness of a single-layer membrane can be controlled in a range of 10-30 microns, and the thickness is uniform and consistent; and the technical difficulties that a dip-coating-method membrane layer is relatively thick and the thickness of a spraying-method membrane layer is not uniform are effectively overcome. The multilayered gradient ceramic membrane is composed of more than three layers of membrane materials having the different chemical components and grains, so that the multilayered gradient ceramic membrane has different coefficients of thermal expansion, porosities and average pore diameters; thermal stress, caused by unmatched expansion coefficients, between the supporting body and the membrane layer is alleviated well; and the binding strength of the membrane layer and the supporting body is improved, and the filtration flux of the membrane layer is increased. The multilayered gradient ceramic membrane is long in service life and low in preparation cost, saves energy and is environmentally friendly.

The invention discloses porous ceramic with good drainage performance and a manufacturing process. The porous ceramic employs silicon carbide, pottery clay, mullite, and iolite as aggregates; wollastonite and spodumene are used as auxiliary materials, and low temperature ceramic glaze powder is used as a fluxing agent; bamboo charcoal and wood chip are used as pore forming agents; the raw materials are prepared according to a certain proportion, paraffin is used as a binder for preparing a slurry, a hot pressure casting and forming machine is used for preparing green compacts, and one-time wax discharging and sintering are carried out by a kiln in order to obtain finished products. Compared with prior art, the product has the functions of common porous ceramics, such as filtering, heat insulation, noise abatement and the like, and the product is characterized in that the product has liquid drainage, penetration, adsorption and fine filtering and other excellent functions, and at the same time, the product has high temperature resistance, quenching and quick heating resistance, and good thermal conductivity; in addition, the common ceramic raw materials are selected, and the porous ceramic has the advantages of low energy consumption, environmental protection without secondary pollution, low cost, and simple technology, and the ceramic is suitable for large scale production. The porous ceramic has wide applications and extremely good development prospects.

The invention discloses a three-dimensional-structured silk fibroin / hydroxyapatite composite stent and a preparation method thereof. The preparation method of the three-dimensional-structured silk fibroin / hydroxyapatite composite stent comprises preparing silk fibroin / hydroxyapatite composite powder uniform in size through biomimetic mineralization; then through the three-dimensional printing technology, precisely controlling the appearance of the composite stent and the shape, size and connectivity of internal holes to obtain the special three-dimensional-structured silk fibroin / hydroxyapatite composite stent applicable to bone tissue engineering for facilitating cell growth and ossification. The three-dimensional-structured silk fibroin / hydroxyapatite composite stent has the advantage of achieving one stent in one structure and is a bone repair composite material stent high in porosity and pore connectivity and controllable in mechanical property, thereby being beneficial to osteogenic induction and differentiation and cell adhesion, migration and proliferation and capable of creating microenvironment meeting growth demands of osteoblasts. The three-dimensional-structured silk fibroin / hydroxyapatite composite stent is simple and practicable in preparation, low in process and equipment requirements, easy to control of experiment parameters and capable of promoting popularization and application of the three-dimensional printing technology in the biological field.

The invention relates to a preparation method of lamellar porous graphene oxide. The preparation method comprises the following steps: (1) dissolving graphene oxide and a binding agent into water to prepare a precursor solution; (2) putting the precursor solution into a container and carrying out a bidirectional freezing reaction to obtain an intermediate product, wherein a wedge-shaped device is arranged at the bottom of the container; (3) freezing and drying the intermediate product obtained by the step (2) to remove a solvent, so as to obtain the lamellar porous graphene oxide. The invention further relates to the lamellar porous graphene oxide. The method is simple to operate; the lamellar porous graphene oxide prepared by a bidirectional freezing method has a regular large-area and biaxial orientated lamellar porous structure.

The invention belongs to the technical field of weather-resistant steel surface pretreatment, relates to corrosion of weathering steel materials in an atmospheric environment, in particular to a stabilizer for promoting the formation of a weather-resistant steel rust layer and a preparation method of the weather-resistant steel rust layer. The stabilizer comprises the following components of, nanoalpha-FeOOH, nano gamma-FeOOH, nano Fe3O4, CuSO4, Cr2(SO4)3, water-based acrylic acid and water; the nano alpha-FeOOH, the nano gamma-FeOOH, the nano Fe3O4, the CuSO4 and the Cr2(SO4)3 are uniformlydispersed in an aqueous acrylic acid aqueous solution; and the nano alpha-FeOOH, the nano gamma-FeOOH and the nano Fe3O4 can induce rust layer nucleation, meanwhile, the surface of the weather-resistant steel can be uniformly corroded in the service process through the characteristics of the water-permeable and oxygen-permeable stabilizer coating, and meanwhile, uniform corrosion causes uniform shedding of the rust layer stabilizer, so that the color of the weather-resistant steel structure is more uniform.

The invention provides a method for preparing a nickel-aluminium base alloy cellular material. Ni powder with a grain diameter ranging from 1 to 10 mu m, aluminium powder with a grain diameter ranging from 10 to 100 mu m and sodium chloride with a grain diameter ranging from 0.01 to 1 millimeter are mixed according to certain weight percentage and are cold pressed and molded at a pressure of 500 to 600 MPa; next, the mixture is low-temperature sintered at 500 DEG C to 650 DEG C; afterwards, a pore-forming agent is removed at an intermediate temperature ranging from 800 DEG C to 950 DEG C; finally, the mixture is high sintered at 1000 DEG C to ensure that the intermetallic compound completely forms Ni3Al phase. The technique method is simple, has convenient operation, low production cost, controllable sizes of pores, evenly distributed pores and adjustable degree of porosity, is suitable for the industrial production, protects the environment and can replace the prior cellular reactor material production technique.

The invention relates to the technical field of hermetia illucens breeding, in particular to an environment-friendly breeding method of hermetia illucens by utilizing kitchen garbage. The environment-friendly breeding method of hermetia illucens by utilizing kitchen garbage comprises the following steps: S1, collecting kitchen garbage, removing impurities, filtering out excessive moisture and grease, and performing crushing and pulping; S2, uniformly mixing obtained kitchen garbage slurry with auxiliary materials according to a mass ratio of (8-20):1; S3, spreading the fermented mixed slurry in a culture box, inoculating hermetia illucens larvae, and using the hermetia illucens larvae to eat the mixed slurry; S4, separating the hermetia illucens larvae from hermetia illucens excrement before entering a pre-pupa stage; and S5, preparing the fresh hermetia illucens larvae into a feed and thoroughly decomposing the excrement to be used as an organic fertilizer. The provided environment-friendly breeding method of hermetia illucens by utilizing kitchen garbage can realize resource utilization and improve the economic benefit of the kitchen garbage, and also can improve a survival rateand the output value of hermetia illucens larvae.

The invention discloses a method for preparing silicon nitride and silicon carbide compounded powder through self-propagating combustion, which is characterized by comprising treatment of raw materials, batching, mixing, self-propagating combustion to obtain finished products and other processing steps. The weight ratio of raw materials in the batching step is as follows: 45-50 percent by weight of metal silicon powder, 5-10 percent by weight of high-purity carbon black and 45 percent by weight of diluent. The invention has the advantages that the process is simple, the product purity is high, the investment is low, the prepared powder has good sintering activity, the whole process is simple and reliable, and large-scale production can be easily realized.

The invention discloses a method for preparing super thermal isolation polymer materials from polymer nanometer hollow capsules. According to the method, firstly, hydrophilic and oleophilic macromolecular reversible addition fragmentation chain transfer reagents are used for preparing polymer nanometer capsules, then, inter-capsule cross linking agents are prepared, finally, the inter-capsule cross linking agents and the polymer nanometer capsule emulsion are mixed according to a mass ratio of capsule to inter-capsule cross linking agents of 2.5:1 to 0.8:1, the pH is regulated to be 3.0 to 6.8, the reaction lasts 30 minutes to 24 hours at the temperature being 60 to 90 DEG C, the emulsion is gelatinized, then, core paraffin wax in the nanometer capsules is replaced through tetrahydrofuran, and polymer nanometer porous materials are obtained through vacuum drying. The method has the advantages that the preparation process is simple, and the porosity and the pore size can be regulated through changing the solid content of the nanometer capsule emulsion, the consumption of etherified melamine formaldehyde resin and the self porosity of the nanometer hollow capsules. In addition, compared with the traditional thermal isolation materials, the porous materials have high mechanical strength.

The invention discloses a SiC-Cu complex phase sweating cooling material used for thermal protection, and a preparation method thereof. The complex material comprises, by volume, 50-75% of a SiC ceramic phase and 25-50% of Cu metal phase, wherein the SiC ceramic phase is in a porous structure; the pores are communicated in three-dimensional space; and the Cu metal phase adheres on the surface of the pores. The preparation method comprises three key processing steps of preparing recrystallized SiC ceramic; coating tungsten carbide on the inner surface of the porous SiC ceramic and infiltrating Cu into the porous SiC ceramic coated by the tungsten carbide spontaneously. A uniform and continuous tungsten carbide layer coats the inner surface of the crecrystallized porous SiC ceramic by adopting a vacuum sol-gel impregnation technology in combination of a carbonization method; and then the SiC-Cu complex phase sweating cooling material is prepared by a spontaneously infiltration process. The method is simple in process and low in cost, can prepare various components with complex shapes, obviously increase high-temperature ablative resistant property of the SiC-Cu complex phase sweating cooling material.

The invention discloses a polyether sulfone / poly butylene carbonate (PBC) hollow fiber blend membrane and a preparation method thereof. The polyether sulfone / poly butylene carbonate hollow fiber blend membrane comprises 5 to 15wt% of polyether sulfone, 1 to 5wt% of poly butylene carbonate, 5 to 10wt% of a pore forming agent, and 60 to 84wt% of an organic solvent. According to the preparation method, polyether sulfone, poly butylene carbonate, the pore forming agent, and the organic solvent are mixed so as to obtain a spinning solution; the spinning solution is subjected to extrusion using a spinning nozzle used for spinning hollow fiber membranes; a hollow fiber membrane is obtained via wet spinning or dry-wet spinning; and the polyether sulfone / poly butylene carbonate hollow fiber blend membrane is obtained via stretching, water washing, and drying. The polyether sulfone / poly butylene carbonate hollow fiber blend membrane is capable of resisting steam sterilization, and possesses high hydrophilic performance; waste can be treated easily; and the preparation method is suitable of industrialized production.

The invention discloses a periclase-spinel light-weight refractory material and a preparation method thereof. The refractory material has gradient density from the exterior to the interior, wherein the exterior is a compact external layer and the interior is porous. The compact external layer enables the material to have a performance of resisting work medium infiltration and the inner porous material enables the material to have a heat insulation performance. The preparation method includes the steps of: 1) with magnesite and carbon as reaction raw materials, pressing a test sample and placing the test sample in an atmosphere sintering furnace; 2) vacuumizing the atmosphere-controllable furnace, feeding air for protection, heating the furnace to certain temperature and feeding oxygen so that the magnesite and carbon are subjected to carbon thermal reduction to generate magnesium vapor; and 3) generating magnesium oxide by diffusing the magnesium vapor to contact with the oxygen, wherein the magnesium oxide generated through oxidization or the spinal generated through the reaction enables a matrix part of the sample to be combined. The material is low in sintering temperature, is adjustable in sample porosity and volume density, and is high in compression strength and refractoriness under load.

The invention discloses a turbulent flow regulating and controlling external particle fluidized bed uniform in turbulence degree and belongs to a mineral separation device. The device comprises a column floating area, a concentrate overflow groove in the upper portion of the column floating area and a middling ore circulating port outside the column floating area; the lower portion of the column floating area is provided with a gas and liquid mixing area; a fluidized bed mineralizing and floating area is arranged between the column floating area and the gas and liquid mixing area; the fluidized bed mineralizing and floating area is provided with a mineralizing area 1, a mineralizing area 2,... and a mineralizing area n; and the interiors of the mineralizing area 1, the mineralizing area 2,...and the mineralizing area n are filled with turbulent flow regulating and controlling particles. According to the turbulent flow regulating and controlling external particle fluidized bed uniform in turbulence degree, mineralizing and floating are totally separated, and are different from current integration of mineralizing and floating; the mineralizing time can be achieved by adjusting the mineralizing area segment number of the fluidized bed mineralizing and floating area, and therefore the kinetic energy utilizing efficiency is very high; the energy dissipating rate is high, the bubble size balance and stable retention of high-pressure gas are guaranteed, and the floating recovery rate is increased; and upper, middle and lower mineralizing fluidized bed layers are provided with different turbulence degrees, and the mineralizing efficiency is high.

The invention discloses a silane coupling agent modified artificial graphite resin-based brake pad and a manufacturing method of the silane coupling agent modified artificial graphite resin-based brake pad. Materials comprise phenolic resin, rubber and organic friction powder, short cut steel fibers, red copper fibers, aramid fibers, high-aluminum ceramic fibers, mineral fibers, silane coupling agents, graphite, composite fillers and the like. The manufacturing method of the silane coupling agent modified artificial graphite resin-based brake pad includes the steps that the silane coupling agents are used for modifying the artificial graphite first, the materials are weighed in sequence and added into a high-speed mixer to be uniformly mixed, pressing and heat curing treatment are conducted according to the dry method one-shot forming method for traditional resin-based friction materials, and finally machining, ceramic treatment and inspecting packaging are carried out. The silane coupling agent modified artificial graphite resin-based brake pad manufactured according to the method has the advantages of being large in braking torque, comfortable and stable in emergency braking, free of obvious degeneration and noise and less in dust fall. The production method is simple and environmentally friendly. The silane coupling agent modified artificial graphite resin-based brake pad is especially suitable for urban bus air disk brakes and has broad market prospects.

The invention provides a large-area uniform raman detection chip for porous membrane sensitivity enhancing and a preparation method for the large-area uniform raman detection chip. The raman detection chip comprises a substrate, a gold-based enhanced structural membrane which is formed on the substrate and is used as an electromagnetic enhancement layer of the raman detection chip, and a nano porous membrane which is formed on the outer surface of the gold-based enhanced structural membrane so as to enrich molecules to be detected. According to the large-area uniform raman detection chip for porous membrane sensitivity enhancing, the nano porous membrane serving as a molecule enriching layer can obviously increase the quantity of the molecules to be detected within a local enhanced electric field working range, so that the raman detection sensitivity of the chip is improved; the large-area uniform raman detection chip is particularly suitable for detection on small-molecular substances with ultralow concentration. The raman detection chip disclosed by the invention has the advantages of low preparation cost, high large-area uniformity and the like, and can suppress interference on a raman fingerprint diagram of the molecules to be detected due to metals.

The invention discloses a preparation method of a porous SiOC ceramic with a composite pore structure. The prepared porous SiOC ceramic internally contains a certain amount of nano-scale and micron-scale pores. The method adopts a composite pore-forming method combining an emulsion template method and a liquid pore-forming agent method, and is specifically realized according to the following steps: mixing a precursor liquid, a liquid pore-forming agent, a catalyst and an emulsifier to prepare an oil phase; during stirring, dropwise adding water into the oil phase to form a water-in-oil emulsion; after the water phase is fully emulsified, pouring the emulsion into a mold, and placing the mold at the proper temperature and humidity for curing cross-linking and drying to obtain a green body; and finally, carrying out heat treatment in an inert atmosphere to obtain the porous SiOC ceramic with a composite pore structure. The preparation method has the advantages that: the porous SiOC ceramic with the composite pore structure is prepared in one step by combining an emulsion template method and a liquid pore-forming agent method, and the porosity is adjustable in a large range.

The invention relates to a high-temperature heat insulation fire-resistant fiber, a fabric, a preparation method and an application. The high-temperature heat insulation fire-resistant fiber is a polyimide porous fiber and has an axial orientation hole structure. The preparation method includes the steps: 1) performing solution spinning on polyamide acid saline gel, performing directional freezingduring spinning and collecting frozen fibers; 2) freeze-drying the frozen fibers and removing ice crystals to obtain the porous fiber with the orientation hole structure; 3) performing thermal amidation on the porous fiber to obtain the polyimide porous fiber. The preparation method is simple and suitable for industrial amplification application and can realize continuous large-scale preparation.

The invention belongs to the technical field of meso-porous materials, and concretely relates to a method for preparing a large-area uniform nano-porous gold film through treating graphene as a template. A gold nanoparticle / graphene composite material film adopted as a raw material can be obtained through a heating reaction in water through a one-step process, the template graphene is removed through adopting two annealing modes comprising direct calcining in air at 600-800DEG C or heating in nitrogen to 600-800DEG C and instant exposure to air, and the nano-porous gold film material having the characteristics of large area, uniformity and different microstructures can be prepared. The poriness of the nano-porous gold film can be adjusted through adjusting the proportions of the two components in the gold nanoparticle / graphene composite material film. Compared with traditional methods for preparing nano-porous gold films through treating colloidal particles as a template or through an alloy removal process, the method provided by the invention has the advantages of simple operation process, mild preparation conditions, nontoxic and environmentally-friendly reagents, and effective control of the morphology of the nano-porous structure, so the method has a wide application prospect.

The invention discloses a quick seedling culturing matrix. The seedling culturing matrix comprises the components in parts by weight: 55 parts of pine sawdust, 30 parts of dishcloth gourd sponge, 8 parts of kaolin, 15 parts of field soil, 4 parts of an inorganic fertilizer, 4 parts of Chinese herbal medicines, and 5 parts of soybean milk. The quick seedling culturing matrix disclosed by the invention uses the pine sawdust and the dishcloth gourd sponge as main raw materials, on one hand, the raw materials are wide in sources and low in cost, and on the other hand, the probability that the matrix using cow dung and chicken manure as the raw materials pollutes environment is also reduced; the soybean milk is added, so that the fertilizer effect of the matrix is improved, plants are easy to absorb the fertilizer effect, and the growth and the development of the plants are promoted. The dishcloth gourd sponge is used as the raw materials of the matrix, so that the matrix can provide nutrient substances, the porosity of the matrix can also be regulated, and the water percolating capacity of the matrix is improved. The Chinese herbal medicines deployed in a fixed proportion provide the fertilizer and can also improve the disease resistance of the plants.

The invention relates to a high-safety gel polymer film and a manufacturing method thereof. The high-safety gel polymer film can be applied to high-temperature batteries or lithium-ion batteries with severer environment temperature application. According to the invention, a lithium-ion battery diaphragm extensively used at present is used as a base material of a polyolefin single-layer thin film or multi-layer thin film, a gel polymer solution is used as a diaphragm layer coating, and the gel polymer diaphragm is prepared through dip coating, drying and solvent removal. The gel polymer solution is prepared by uniformly mixing 2-4% of PVDF / HFP (Polyvinylidene Fluoride / hexafluoropropylene), 1-3% of ALOOH and 2-5% of absolute ethyl alcohol or isopropyl in 90-96% of acetone by weight. Compared with the prior art, the high-safety gel polymer film has the advantages of simple manufacturing technology, easy acquisition of materials, easy removal of a solvent, low equipment energy consumption and environment-friendly technological process.

The invention belongs to the field of nano material preparation, and particularly relates to a nano porous surface plasmon crystal and a preparation method thereof. The preparation method of the nanoporous surface plasmon crystal is provided aiming at the problems that the optical performance of a surface plasmon crystal prepared through an existing method is poor and needs to be improved. The preparation method includes the following steps that a, nano particle suspension liquid is prepared into singly dispersed nano particles; b, the nano particles are assembled on the surface of a substrate, and a regular two-dimensional hexagonal close-packed nano particle array is formed; c, annealing treatment is carried out; d, an alloy thin film is deposited on the surface of the two-dimensional particle nano array, and a metal alloy hemispherical shell array is formed; e, dealloying treatment is carried out, and a nano porous metal hemispherical shell array structure is formed. The preparation process is simple, the equipment requirement is not high, the cost is low, the prepared nano porous surface plasmon crystal has more excellent optical characteristics, and obvious economic benefitsare achieved.