44results about How to "Good three-dimensional structure" patented technology

The invention discloses a preparation method of cellulose / metal oxide composite aerogel. The preparation method comprises the following steps of: (1) preparing a cellulose film; (2) using deionized water to clean the cellulose film obtained in the step (1), and using an organic solvent A to replace moisture in the cellulose; (3) immersing the cellulose film obtained in the step (2) into alcohol solution of inorganic metal salt, simultaneously adding an epoxy compound, standing for reaction, and obtaining the cellulose / metal oxide composite aerogel, wherein the volume of the epoxy compound is 5-20% of the volume of the alcohol solution of the inorganic metal salt; (4) using the deionized water to clean a gel film obtained in the step (3), and then using an organic solvent B to replace the moisture in the gel film; and (5) freezing and drying or drying critically the gel film obtained in the step (4) and obtaining the cellulose / metal oxide composite aerogel. The composite aerogel obtained by the preparation method has higher specific area.

The invention relates to an improvement on Z direction continuous carbon fiber prefabrication, which is characterized in that: a planar laminated carbon fiber fabric is weftless carbon fiber cloth formed by arranging long fibers in an interlaminar crossing way. A Z direction structure is stable, and basically undamaged continuous carbon fibers are arranged in the three-dimensional direction of the prefabricated body, so that the isotropy of the prefabricated body is enhanced, and a three-dimensional structural framework is formed. A chopped fiber web in which fibers are randomly distributed is introduced between adjacent layers, and a plurality of holes are distributed randomly, so that the introduction and uniform distribution of matrix carbon are facilitated. Due to the adoption of the weftless fabric, the needle threading resistance is reduced, the Z direction continuous fiber interval can be enlarged, and the Z direction continuous fiber introducing efficiency is improved; and large K-beam carbon fibers can be adopted, so that the cost can be lowered by 40-60 percent. The prefabricated body provided by the invention can be taken as a structural material, a functional material and a structural-functional material.

The invention relates to a preparation method for an acellular xeno-dermal matrix. Fresh salted pigskin is employed as a raw material, physical, chemical and biochemical combination methods are employed, the pigskin is subjected to a series of treatments of degreasing, alkaline swelling, alkaline swelling elimination, keratinase processing, secondary enzyme treatment and the like, and an acellular xeno (pig)-dermal matrix with excellent performances and wide purposes is prepared and obtained. In the method, keratinase processing and secondary enzyme treatment are employed, the method has low environmental pollution, and the acellular xeno (pig)-dermal matrix processed through the method has advantages of complete collagen three-dimensional structure, good moisture permeability, high porosity and excellent mechanical properties. The acellular xeno-dermal matrix can be applied in the burn and plastic surgery fields.

The invention provides a method for preparing a mercury removing agent from a waste methanol catalyst. The method comprises the following steps: (1) crushing the waste methanol catalyst and mixing the crushed catalyst with a binder, extruding the mixture into strips, drying and calcining at 350-500 DEG C for 1-8 hours to obtain a mercury removing agent precursor; and (2) putting the mercury removing agent precursor into contact with sulfur-containing waste gas for sulfidizing treatment, and drying to obtain the mercury removing agent. According to the method for preparing the mercury removing agent from the waste methanol catalyst, as the waste methanol catalyst is taken as the raw material, resources can be saved, the cost can be reduced, and aluminum in the waste methanol catalyst also can be kept functioning in binding and enhancing adsorption in the final product mercury removing agent; the existing aluminum also serves as a carrier and has an excellent dispersion effect on the CuS active component; as a result, the mercury removal performance can be improved and the mercury removing agent is enabled to have relatively high mercury capacity.

The invention relates to an improvement on Z direction continuous carbon fiber prefabrication, which is characterized in that: a planar laminated carbon fiber fabric is weftless carbon fiber cloth formed by arranging long fibers in an interlaminar crossing way. A Z direction structure is stable, and basically undamaged continuous carbon fibers are arranged in the three-dimensional direction of the prefabricated body, so that the isotropy of the prefabricated body is enhanced, and a three-dimensional structural framework is formed. A chopped fiber web in which fibers are randomly distributed is introduced between adjacent layers, and a plurality of holes are distributed randomly, so that the introduction and uniform distribution of matrix carbon are facilitated. Due to the adoption of the weftless fabric, the needle threading resistance is reduced, the Z direction continuous fiber interval can be enlarged, and the Z direction continuous fiber introducing efficiency is improved; and large K-beam carbon fibers can be adopted, so that the cost can be lowered by 40-60 percent. The prefabricated body provided by the invention can be taken as a structural material, a functional material and a structural-functional material.

The invention relates to the field of water treatment, and particularly discloses a double-knot fiber bundle floating ball biological carrier and a microorganism attachment regulation and control method thereof. The double-knot fiber bundle floating ball biological carrier comprises a net-shaped spherical shell, an annular double-knot fiber bundle is arranged in the net-shaped spherical shell, the double-knot fiber bundle comprises a nylon rope, fibers and a fixing part, and the fibers are fixed to the nylon rope in a multi-point mode in the length direction of the nylon rope. The length between any two adjacent fixing points of the fiber yarn is larger than the length between the nylon rope and the fiber yarn fixing position, and the fixing parts are located at the two ends of the nylon rope and bind the nylon rope and the fiber yarn together. The microorganism attachment regulation and control method comprises the following steps: putting a biological carrier into a biological membrane denitrification treatment tank, taking activated sludge as inoculated sludge, putting the activated sludge into the treatment tank, injecting sewage into the treatment tank, and carrying out intermittent aeration for microbial attachment. The method has the effects of being high in microorganism attachment speed and stable in attachment.

The invention relates to a preparation method of a heterogeneous acellular dermal matrix. Fresh salted pigskin is used as a raw material, and the method of combining physics, chemistry and biochemistry is used to degrease, alkali-swell, eliminate alkali-swell and treat with keratinase , secondary enzyme treatment and a series of treatments to prepare a heterogeneous (pig) acellular dermal matrix with excellent performance and wide application. The method adopts keratinase treatment and secondary enzyme treatment, and the method has the advantages of less environmental pollution and the heterogeneous (pig) acellular dermal matrix treated by the method has a complete three-dimensional structure of collagen, good water vapor permeability, high porosity, The material has excellent mechanical properties and can be widely used in the fields of burns and plastic surgery.

The invention discloses a water-absorption flame-retardant sponge and a production method, which is characterized in that the sponge comprises the following raw materials by weight: 95-110 parts of propylene glycol block polyether, 48-55 parts of toluene diisocynate, 8-10 parts of polyacrylamide, 5-6 parts of antimonous oxide, 0.5-0.75 parts of triethylamine, 3-4 parts of dichloroethane, 3.5-5.5 parts of zinc oxide, 4.0-5.0 parts of glycerol, 0.5-0.7 parts of antioxidant 168, 0.3-0.8 parts of dibutyl tin diacetate, 0.3-0.5 parts of sodium laurylsulfate, 4-5 parts of modifier and 6.5-9.5 parts of water. The sponge has excellent flame retardant performance, water absorption performance, mould resistance and air purification, nano calcium carbonate in the raw materials has a three-dimensional structure, and has good dispersibility, can enhance the hardness of the sponge, and antimonous oxide has good flame retardant effect.

The invention discloses a preparation method of a supported ammonium perchlorate / graphene oxide 3D (Three-Dimensional) energetic material. The preparation method comprises the following steps: step one, preparing graphene oxide, and carrying out high-strength ultrasonic treatment, thus preparing a graphene oxide water solution in uniform dispersion; step two, dissolving ammonium perchlorate crystals in the graphene oxide water solution, and putting and completely freezing the mixed solution in a low-temperature environment; step three, removing water in a mixture by utilizing a freeze-drying method, and reserving a 3D structure of ammonium perchlorate / graphene oxide. According to the preparation method of the supported ammonium perchlorate / graphene oxide 3D energetic material, disclosed bythe invention, the cost is low, the safety is high, all components of the supported ammonium perchlorate / graphene oxide 3D energetic material are uniform in distribution, residual impurities or reactants cannot be generated, and a rate of finished products is high; the formed 3D structure is well kept, heat transfer during a thermal decomposition process is increased, efficient and continuous occurrence of catalytic reaction is ensured, and the burning rate of a propellant can be remarkably increased.

The invention provides a scattered metal doped oxygen-enriched smelting slag low-carbon clinker. The scattered metal doped oxygen-enriched smelting slag low-carbon clinker is prepared from 75-85 parts of limestone, 3-10 parts of fine-grained copper tail mud, 2-6 parts of sandstone and 6-15 parts of scattered metal oxygen-enriched smelting slag. The invention further provides road cement using the low-carbon clinker. The road cement is prepared from 50-70 parts of the low-carbon cement clinker, 5-25 parts of scattered metal oxygen-enriched smelting slag, 5-20 parts of lithium slag, 10-30 parts of water granulated slag, 1-5 parts of an inorganic exciting agent and 0.1 part of a functional grinding aid. The invention also provides a method for preparing the road cement. The low-carbon clinker disclosed by the invention is high in strength, wear-resistant and lower in firing temperature, and the production energy consumption is reduced; the prepared low-carbon road cement is low in clinker content, high in later strength, good in wear resistance and low in shrinkage; meanwhile, resource utilization of various industrial waste residues can be achieved, and the method has the important significance of being economical, low-carbon, environmentally friendly and the like.

The invention discloses a cotton carbon cloth / nitrogen-doped nanocarbon / carbon nanotube flexible integrated electrode and a preparation method and application thereof. The electrode is composed of a cotton carbon cloth substrate, in-situ synthesized nitrogen-doped nanocarbon and a carbon nanotube, and is obtained by calcining cotton cloth containing urea and the carbon nanotube in an inert atmosphere; the cotton carbon cloth substrate is of an interwoven flexible three-dimensional structure, and the fiber diameter is 5-20 microns; the nitrogen-doped nanocarbon is strip-shaped graphite carbon and is of a net-shaped cross-linked structure; the tube diameter of the carbon nano tube is 5-10nm, and finally, the carbon nano tube is uniformly and firmly adhered to the cotton carbon cloth substrate fiber by the net-shaped nitrogen-doped nano carbon. The electrode provided by the invention has a good conductive transmission interface and abundant active sites, is used as a positive electrode catalyst of a liquid and flexible rechargeable zinc-air battery, and has charge-discharge potential difference and cycle life exceeding those of a CCC-CNT contrast, commercial platinum carbon and iridium dioxide.

The invention relates to an organic dye, a preparation method thereof and a sensitized solar cell containing the organic dye, belonging to the technical field of dye-sensitized solar cells. The organic dye has the following structure, wherein R1, R2 are independently selected from any one of H, C1~C18 alkyl, and C1~C18 alkoxy; R3, R4 are independently selected from H, C1~C18 alkyl, C1 Any one of ~C18 alkylphenyl, C1~C18 alkoxyphenyl; R5, R6 are independently selected from H, F, C1~C18 alkyl, C1~C18 alkylphenyl, C1~C18 alkoxy Any one of phenyl groups; x, y are 0 or 1. The dye of the present invention has a twisted electron skeleton, and at the same time combines side modifying groups to make it have a better three-dimensional structure. The sensitized solar cell prepared by the dye has higher voltage and can be used as a co-sensitizer in combination with other high-efficiency dyes to prepare a device with excellent performance and good photothermal stability. The preparation method of the organic dye has rich sources of raw materials, low cost, good photothermal stability of the prepared device, and bright prospect of industrial production.

The invention relates to an organic dye and a preparation method thereof, and a sensitized solar cell containing the organic dye, and belongs to the technical field of dye-sensitized solar cell. The organic dye has the following structure described in the description, wherein R1 and R2 are independently selected from any one of H, C1-C18 alkyl and C1-C18 alkoxy, R3 and R4 are independently selected from any one of H, C1-C18 alkyl, C1-C18 alkyl phenyl and C1-C18 alkoxy phenyl, R5 and R6 are independently selected from any one of H, F, C1-C18 alkyl, C1-C18 alkyl phenyl, and C1-C18 alkoxy phenyl, and x and y are 0 or 1. The dye has a twisted electronic skeleton and is combined with a side modifying group to make the dye have a better three-dimensional structure at the same time. The sensitized solar cell prepared by the dye has a higher voltage, and the dye can be used as a co-sensitization agent for being combined with other high-efficiency dyes to prepare a device with excellent performance and good light and thermal stability. The preparation method of the organic dye has the advantages of abundant raw material sources, lower cost, good light and thermal stability of the prepared device, and grander industrialized production prospect.

The invention discloses a nicotine load slow-releasing agent and a preparation method and application thereof. The nicotine load slow-releasing agent is mainly prepared from effective components in percentage by weight: 0.488% of zirconium salt, 99.164% of acidamide and 0.347% of organic carboxylic acid. The zirconium salt, the acidamide and the organic carboxylic acid are utilized to form metal-organic frameworks (MOFs), thus the slow-releasing agent has a three-dimensional structure, has the large specific surface area, a large pore passage gap and an obvious pore structure, and has good compatibility with tobacco, aroma of the tobacco is not affected, and the nicotine load slow-releasing agent is non toxic and harmless, has no peculiar smell and has good thermal stability.