31results about How to "Suitable for industrial amplification applications" patented technology

The invention relates to boron nitride / epoxy resin composite and a preparation method and application thereof. The preparation method includes: 1) dispersing boron nitride nanosheet and a binder in water to form a mixed solution; 2) subjecting the mixed solution to bidirectional freezing, and removing ice crystal by lyophilization to obtain boron nitride aerogel with lamellar oriented structure; 3) filling the lamellar oriented structure of the boron nitride aerogel with cured epoxy resin to obtain the boron nitride / epoxy resin composite. The preparation method is simple to perform, is available to large-scale preparation and is suitable for industrial scaled application.

The invention relates to a preparation method of a highly-doped radiation refrigeration composite fiber and a preparation method of highly-doped radiation refrigeration composite fiber fabrics. The preparation method of the highly-doped radiation refrigeration composite fiber comprises the steps that radiation refrigeration composite materials are prepared, and the radiation refrigeration composite materials comprise polymer substrate materials and inorganic micro-nano particles; fiber prefabricated rods containing the radiation refrigeration composite materials are prepared; and the fiber prefabricated rods are subjected to hot drawing to prepare the radiation refrigeration composite fiber. By using the hot drawing method, the radiation refrigeration composite fiber and the fabrics dopedwith the micro-nano particles with high concentration can be prepared, by regulating and controlling the macroscopic structures and shapes of the fiber prefabricated rods, the composite fiber with multiple complex structures can be prepared, and radial and angular random concentration distribution can be realized; and the fiber has excellent radiation refrigeration performance and mechanical performance, the preparation method is simple, continuous large-scale preparation can be carried out, the preparation method is suitable for being used in an industrial method, and meanwhile, different materials can be designed according to own requirements.

The invention discloses a catalyst with non-noble metal nanoclusters confined and stabilized in silicalite-1 molecular sieve pore channels, and a preparation method and an application thereof, and belongs to the technical field of molecular sieves. The molecular sieve loaded catalyst provided by the invention has a single nanoparticle with a shape of a hexagonal prism, a length of about 200 nm, awidth of about 200 nm and a thickness of about 100 nm. Non-noble metal nanoclusters contained in the molecular sieve pore channels of the catalyst provided by the invention have good dispersity whichis larger than 80%, comprise non-noble metal elements of Cu, Fe, Co, Ni and Ag, and have a particle size of 1 to 2 nm. The catalyst provided by the invention has ultrahigh single product selectivity in a solvent-free liquid-phase oxidation of toluene, and has good conversion efficiency compared with catalysts of a same kind. Meanwhile, the pore channel structure of the catalyst provided by the invention also has a certain selective redox function for aromatic compounds.

The invention discloses a cobalt-based catalyst as well as a preparation method and application thereof to synthesis of 3-hydroxycarboxylate. The cobalt-based catalyst comprises: nano metal cobalt which is used as a main active component, a porous material which is used as a composite carrier, and a nitrogen-doped carbon material, wherein the nano metal cobalt is uniformly loaded on the porous material; the surface of the nano metal cobalt is coated with the nitrogen-doped carbon material. The preparation method comprises the following steps: enabling a mixed reaction system containing a cobalt source, a carbon-nitrogen precursor and a solvent to react at 25 to 80 DEG C for 0.5 to 2h, and adding the porous material; then roasting at 550 to 900 DEG C for 2 to 3h in a protective atmosphere to obtain the cobalt-based catalyst. The cobalt-based catalyst provided by the invention has stable structure and properties and high reaction activity and 3-hydroxycarboxylate selectivity; the cobalt-based catalyst has the advantages that the preparation method is simple, the catalyst is easy to separate and recycle after reaction, the catalytic property of the catalyst is not reduced after the catalyst is repeatedly used for a plurality of times and the like, so that the catalyst is more suitable for industrial amplified application.

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 relates to a preparation method, a product and application of porous fibers with oriented pore structures. The preparation method comprises the following steps: 1) mixing a silk proteinsolution with a chitosan solution to prepare a mixed solution; 2) carrying out solution spinning on the mixed solution, carrying out directional freezing during spinning, and collecting fibers; and 3)freeze-drying the fibers to remove ice crystals to obtain the porous fibers with the oriented pore structures. According to the preparation method, by combining directional freezing and solution spinning, the pore structures of the obtained porous fibers are oriented, so that the porous fibers have excellent heat insulation performance and electric heating performance.

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 relates to a preparation method, product and application of a radiation-proof porous fiber with an oriented pore structure. The preparation method comprises the steps that a spinning solution is prepared, wherein a radiation-proof filler is added during the preparation; spinning is performed through the spinning solution, wherein directional freezing is performed during spinning, anda frozen fiber is collected; ice crystals of the frozen fiber are removed. According to the method, by combining directional freezing and solution spinning, the porous fiber with the oriented pore structure is obtained; the radiation-proof filler is introduced in the preparation process, so that the fiber has excellent thermal insulation and radiation-proof performance.

The invention discloses a preparation method of a polyacrylate macroporous cross-linked polymer. The preparation method comprises the steps: (1) dissolving an acrylic monomer and an oil-soluble crosslinking agent in an oil-soluble solvent to form a precursor solution, wherein the weight percentage of the monomer in the precursor solution is 5wt%-20wt%, and the weight percentage of an initiating agent in the precursor solution is 0.1wt%-1wt%; (2) adding the initiating agent, putting the precursor solution at the temperature below the melting point of the solvent, and carrying out polymerization reaction to obtain an intermediate product; and (3) putting the intermediate product obtained in the step (2) at the temperature below the melting point of the solvent, and after fusing the solvent, compressing, washing, soaking and drying so as to remove the solvent, thus obtaining the macroporous cross-linked polymer. The preparation method disclosed by the invention has the advantages that selectable raw materials are sufficient and low in cost, the preparation method is suitable for industrial enlargement and application, and the prepared macroporous cross-linked polymer is small in relative density and high in specific strength, porosity and shape recovery percentage.

The invention provides a method of purifying HBc-VLPs or HBc-VLPs derivatives. The method includes: subjecting a bacterial liquid containing HBc-VLPs or HBc-VLPs derivatives to first thermal treatmentprior to second thermal treatment so as to obtain purified HBc-VLPs or HBc-VLPs derivatives. The method provided herein helps solves, via two-step gradient heating, the problem that existing universal one-step heating methods face low removal rate of miscellaneous proteins, while miscellaneous proteins may enter viral-like particles to cause product pollution; good product quality is guaranteed;the purity is high; the product purity may be increased to 99% and above by means of refining and otherness while the yield may be increased to about 77%; the method has good practical application value and industrial application value.

The invention relates to a device system for treating desulfurized wastewater by utilizing the fume waste heat of a power plant. The device system comprises an inert particle drying chamber, an air supply device, a feed device and a gas-solid separation device; the desulfurized wastewater of a power plant is pressurized into a liquid distributor through the feed device, is uniformly distributed ona fluidized bed, is sprayed and coated to the surface of inert particles, and performs heat and mass transfer with heat fume blowing from the bottom and side part of the inert particle drying chamberto remove moisture; after a solid material in the desulfurized wastewater is collided and falls down, partial residue-containing gas is emitted out and recycled by the power plant, and partial residue-containing gas is mixed with the heat fume to cyclically enter the inert particle drying chamber. The device system solves the defects of large floor area, complicated operation, low reliability, not remarkable economical efficiency and the like of a traditional wastewater treatment device, fume waste heat of a power plant can be reasonably recycled for the second time, and the drying performance and reliability of the fluidized bed can be improved.

The invention relates to a preparation method of porous resin fiber with an orientation hole structure, a product and an application. The preparation method comprises steps as follows: 1) to-be-polymerized emulsion is subjected to emulsion spinning, directional freezing is performed during spinning, and frozen fiber is collected, wherein the to-be-polymerized emulsion comprises a resin monomer, afree radical polymerization initiator, a reactive emulsifier and a thickening agent or comprises a prepolymer, the free radical polymerization initiator, the reactive emulsifier and the thickening agent or comprises a self-emulsified prepolymer, the free radical polymerization initiator and the thickening agent; 2) the frozen fiber is subjected to a polymerization reaction in a low-temperature environment; 3) the frozen fiber is unfrozen and dried, and the porous resin fiber with the orientation hole structure is obtained. Through combination of the directional freezing, emulsion spinning andfreezing polymerization, the pore structure of the obtained porous resin fiber has orientation, and vacuum freeze-drying can be avoided in the preparation process.

The invention discloses a slice-shaped nanometer SAPO-34 molecular sieve with relatively low silicon content, a preparation method and an application thereof, and belongs to the technical field of molecular sieves. Tetraethylammonium hydroxide is used as a template, the slice-shaped nanometer SAPO-34 molecular sieve with relatively low silicon content is synthesized by using the traditional hydrothermal method or a solvothermal synthesis method. The synthesized nanometer SAPO-34 sample is a slice-shaped feature, of which the average crystal granularity size is 50-250nm and the thickness is 50-100nm. The synthetic method is simple and efficient; the solvent consumption is low; the yield of the synthesized nanometer SAPO-34 sample is extremely high and can be up to 85-90 percent; the synthesized nanometer SAPO-34 sample is high in low carbon olefin selectivity during reaction of methanol to olefin (MTO), particularly, the total yield of ethylene and propylene can be up to more than 83 percent, and the molecular sieve is very suitable for industrial amplification application.

The invention relates to a preparation method of superhydrophobic porous fibers with oriented pore structure, superhydrophobic porous fibers with oriented pore structure and application thereof. The preparation method comprises: preparing a spinning solution; performing spinning with the spinning solution, with directional freezing carried out while spinning, and collecting frozen fibers; removingice crystal from the frozen fibers; and performing surface superhydrophobic treatment on the porous fibers. the porous fibers with oriented pore structure are prepared by the combination of directional freezing and the spinning solution; the surface superhydrophobic treatment is performed on the porous fibers so that excellent heat insulation and superhydrophobic property are imparted to the porous fibers.

The invention discloses a cobalt-based catalyst, its preparation method and its application in synthesizing 3-hydroxycarboxylate. The cobalt-based catalyst includes: nano-metal cobalt as the main active component, a porous material as a composite carrier, and a nitrogen-doped carbon material, wherein the nano-metal cobalt is uniformly loaded on the porous material, and the nitrogen-doped carbon The material is coated on the surface of nano metal cobalt. The preparation method includes: reacting the mixed reaction system containing cobalt source, carbon-nitrogen precursor and solvent at 25-80°C for 0.5-2h, adding porous material, and then calcining at 550-900°C in a protective atmosphere for 2 hours. ~3h, cobalt-based catalyst was obtained. The cobalt-based catalyst of the present invention has stable structure and properties, high reactivity and 3-hydroxycarboxylate selectivity; and has the advantages of simple preparation method, easy separation and recovery of the catalyst after the reaction, and repeated repetition without reducing its catalytic performance. Suitable for industrial amplification applications.

The invention discloses a method for enhancing the tear resistance performance of a polymer membrane material by using plane cocoons and a composite membrane material thereof. Place the cooked silkworm on a flat plate to spin silk to obtain a flat cocoon, and place the flat cocoon in the groove; then pour the polymer solution into the groove and completely immerse the flat cocoon, and then remove the air bubbles; finally, put the above mixed system at a certain temperature Under the curing, the fiber-reinforced composite membrane is finally obtained. The method of the invention is simple to operate, and the mechanical property of the polymer membrane material is significantly improved by using the cocoon fiber directly spun by the silkworm on the flat plate, and a high-performance fiber-reinforced composite membrane is obtained.

The invention relates to a preparation method, product and application of a UV-resistant porous fiber with an orientation hole structure. The preparation method includes: preparing a spinning solution, adding an ultraviolet shielding agent during preparation; spinning the spinning solution, and performing spinning during spinning. Directional freezing and collection of frozen fibers; frozen fibers remove ice crystals. The invention combines directional freezing and solution spinning to obtain a porous fiber with an oriented hole structure, and introduces an ultraviolet shielding agent into the preparation process, so that it has excellent heat insulation and ultraviolet protection properties at the same time.

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 discloses a cobalt-phosphine catalyst as well as its preparation method and application. The preparation method of the cobalt-phosphine catalyst comprises: reacting the first homogeneously mixed reaction system containing a cobalt source, a phosphine ligand and a solvent at 70-140°C for 1-6 hours in a reducing atmosphere, and then post-processing to prepare Cobalt-phosphine catalyst. The present invention also provides a method for synthesizing β-hydroxycarboxylic acid esters, which includes: in a CO atmosphere, making the second homogeneously mixed reaction system comprising epoxy compounds, methanol, and cobalt-phosphine catalysts at a pressure of 2-2 React for 5-60 hours under the condition of 8MPa and temperature of 30-110°C to prepare β-hydroxy carboxylate. The preparation method of the cobalt-phosphine catalyst of the present invention is simple, the cost is low, and the yield is high. At the same time, the obtained catalyst can efficiently convert epoxy compounds into β-hydroxycarboxylates, and the catalyst has good stability and is convenient for storage, transportation and use. and recycling.

The invention relates to a preparation method, product and application of a radiation-proof porous fiber with an oriented pore structure. The preparation method comprises the steps that a spinning solution is prepared, wherein a radiation-proof filler is added during the preparation; spinning is performed through the spinning solution, wherein directional freezing is performed during spinning, anda frozen fiber is collected; ice crystals of the frozen fiber are removed. According to the method, by combining directional freezing and solution spinning, the porous fiber with the oriented pore structure is obtained; the radiation-proof filler is introduced in the preparation process, so that the fiber has excellent thermal insulation and radiation-proof performance.

The invention relates to a method for preparing a porous fiber from natural polymers and a product and application thereof. The preparation method includes the following steps that 1, a natural polymer solution for spinning is prepared; 2, the natural polymer solution is subjected to solution spinning, directional freezing is conducted at the time of spinning, and fiber is collected; 3, the fiberis freeze-dried to remove ice crystals, and the porous fiber with an oriented pore structure is obtained. Through the combination of directional freezing and solution spinning, the obtained porous fiber has the oriented pore structure, and the method can be widely used for preparing porous fiber materials from different kinds of natural polymers.

The invention discloses a graphene thermal interface material production device and a preparation method thereof, which belong to the technical field of thermal interface material production. A graphene thermal interface material production device includes a fixed frame, and a transmission box is arranged at the upper end of the fixed frame , the inner wall of the transmission box is provided with a rotation fixing seat, and the rotation fixing seat is arranged in a plurality of circular arrays, the center of the transmission box is concentrically provided with a microneedle cutting seat, and the lower end of the fixing frame is provided with a driving mechanism, so The driving mechanism described above includes an indexing turntable and a synchronous deflection motor. The set indexing turntable drives the microneedle cutting seat to rotate periodically, and the microneedle cutting seat drives the microneedle assembly to carry out the two-dimensional nanosheet dispersion coated on the thermal interface substrate. Microneedle cutting prepares a thermal interface material with a high vertical orientation. The thermal interface material has a radial structure formed by microneedle cutting. This device is low in price and simple in process, suitable for large-scale continuous production and industrial scale-up applications.

The invention relates to a preparation method of superhydrophobic porous fibers with oriented pore structure, superhydrophobic porous fibers with oriented pore structure and application thereof. The preparation method comprises: preparing a spinning solution; performing spinning with the spinning solution, with directional freezing carried out while spinning, and collecting frozen fibers; removingice crystal from the frozen fibers; and performing surface superhydrophobic treatment on the porous fibers. the porous fibers with oriented pore structure are prepared by the combination of directional freezing and the spinning solution; the surface superhydrophobic treatment is performed on the porous fibers so that excellent heat insulation and superhydrophobic property are imparted to the porous fibers.

The invention discloses a preparation method of a monopolymer composite material based on planar silkworm cocoons and a composite material thereof. Mature silkworms are placed on a flat plate to spin to obtain planar silkworm cocoons, on one hand, the planar silkworm cocoons serve as a reinforcement phase of the composite material, and on the other hand, fibroin obtained by dissolving and regenerating the planar silkworm cocoons serves as a matrix of the composite material. The monopolymer composite material based on the planar silkworm cocoons is finally obtained by infiltrating a silk solution into the planar silkworm cocoons, naturally drying a composite system at normal temperature, curing the composite system in methanol, and naturally drying the cured composite system at normal temperature. The method disclosed by the invention is simple to operate, good interface bonding of the matrix and the reinforced phase in the composite material is realized by using the same natural polymer, the mechanical property of the material is improved, and the material has biodegradability.

The invention discloses a graphene thermal interface material production device and a preparation method thereof, and belongs to the technical field of thermal interface materials. The graphene thermal interface material production device comprises a fixing frame, a transmission box is arranged at the upper end of the fixing frame, and autorotation fixing bases are arranged on the inner wall of the transmission box; a plurality of autorotation fixing seats are arranged in an annular array, a microneedle cutting base is concentrically arranged in the center of the transmission box, a driving mechanism is arranged at the lower end of the fixing frame and comprises an indexing rotary table and a synchronous deflection motor, and the arranged indexing rotary table drives the microneedle cutting base to periodically rotate, The microneedle cutting base drives a microneedle assembly to perform microneedle cutting on the two-dimensional nanosheet dispersion liquid coated on the thermal interface substrate, the thermal interface material with high vertical orientation is prepared, the thermal interface material is subjected to microneedle cutting to form a radial structure, and the device is low in price, simple in process, suitable for large-scale continuous production and suitable for industrial amplification application.

The invention relates to a preparation method of porous resin fiber with an orientation hole structure, a product and an application. The preparation method comprises steps as follows: 1) to-be-polymerized emulsion is subjected to emulsion spinning, directional freezing is performed during spinning, and frozen fiber is collected, wherein the to-be-polymerized emulsion comprises a resin monomer, afree radical polymerization initiator, a reactive emulsifier and a thickening agent or comprises a prepolymer, the free radical polymerization initiator, the reactive emulsifier and the thickening agent or comprises a self-emulsified prepolymer, the free radical polymerization initiator and the thickening agent; 2) the frozen fiber is subjected to a polymerization reaction in a low-temperature environment; 3) the frozen fiber is unfrozen and dried, and the porous resin fiber with the orientation hole structure is obtained. Through combination of the directional freezing, emulsion spinning andfreezing polymerization, the pore structure of the obtained porous resin fiber has orientation, and vacuum freeze-drying can be avoided in the preparation process.

The invention relates to boron nitride / epoxy resin composite and a preparation method and application thereof. The preparation method includes: 1) dispersing boron nitride nanosheet and a binder in water to form a mixed solution; 2) subjecting the mixed solution to bidirectional freezing, and removing ice crystal by lyophilization to obtain boron nitride aerogel with lamellar oriented structure; 3) filling the lamellar oriented structure of the boron nitride aerogel with cured epoxy resin to obtain the boron nitride / epoxy resin composite. The preparation method is simple to perform, is available to large-scale preparation and is suitable for industrial scaled application.

The invention relates to a preparation method, product and application of an ultraviolet-proof porous fiber with an oriented pore structure. The preparation method comprises the steps that a spinningsolution is prepared, wherein an ultraviolet screening material is added during the preparation; spinning is performed through the spinning solution, wherein directional freezing is performed during spinning, and a frozen fiber is collected; ice crystals of the frozen fiber are removed. According to the method, by combining directional freezing and solution spinning, the porous fiber with the oriented pore structure is obtained; the ultraviolet screening material is introduced in the preparation process, so that the fiber has excellent thermal insulation and ultraviolet-proof performance.