51results about How to "Good hole making effect" patented technology

The invention discloses a preparation method of an alga-based active carbon precursor for a super capacitor. The method mainly comprises the following steps: ultrasound and swelling and other methodsare firstly utilized for carrying out cell wall breaking of alga raw materials, so that alginate in pectin of cell walls and between cells is dissolved; a digestion process is further carried out, under the heating condition with alkali, alginates which are not dissolved in water are converted into water soluble alkali metals and extracted; a cross-linking agent is introduced, and precipitation ofpolymers is formed; washing and filtering steps are carried out, in order to discharge a large amount of inorganic salts, pigments and other impurities which are dissolved in water along with water,and the precursor is obtained. The precursor is carbonized and activated in order to obtain the active carbon material with reasonable pore structure, abundant channels, and massive specific surface area, in order to substantially improve capacity and electrochemical performance of the super capacitor with extremely good industrial application prospects.

The invention relates to a method for preparing a ceramic bond super-hard abrasive tool, which comprises the following steps of: mixing ceramic bond, super-hard abrasive (diamond and cubic boron nitride), filler (common abrasive such as corundum, silicon carbide and the like) and pore-forming agent, adding temporary bond into the mixture, uniformly filling the mixture into a molding mold, moldingthe mixture under the pressure of 60 to 200MPa, and preparing the ceramic super-hard abrasive tool with pores by the processes of drying, roasting, surface treatment, adhesion, modification and shaping treatment and detection. The ceramic super-hard abrasive tool comprises the following components in part by weight: 40 to 75 parts of super-hard abrasive, 30 to 10 parts of filler, 30 to 15 parts of ceramic bond, 3 to 10 parts of temporary bond and 5 to 15 parts of pore-forming agent, wherein the pore-forming agent is macromolecular resin spherical granules (one of acrylic resin, polyimide resin and solid phenolic resin); and the roasting is step temperature-controlled burning. The ceramic super-hard abrasive tool has the advantages of good pore-forming effect, good pore adjustability, novelty and environmental protection, no toxin or harm, and convenience for use and popularization.

The invention provides a low-cost high-activity catalytic type desulphurization active coke. The low-cost high-activity catalytic type desulphurization active coke is a material which is activated, extruded and formed by mainly components comprising carbonization soft coal and pyrolusite; the percentage of weight of manganese is not less than 1.6%; the saturated sulphur capacity of the desulphurization active coke is 140-181mg / g; the specific surface area is 319-363m<2> / g; the iodine value is 344-393mg / g. The preparation method of the low-cost high-activity catalytic type desulphurization active coke comprises the following steps: firstly carbonizing smoke, crushing the pyrolusite and the soft coal carbonization material into powder, adding the soft pyrolusite powder into the soft coal carbonization material powder and uniformly mixing, then adding water to mix till the material is free of powder aggregate, adding coal tar, fully kneading and then extruding, forming and drying, causing the dried material to be subjected to activation reaction under the conditions with N2 protection and water vapor, finally cooling the material along with a furnace to room temperature under the N2 protection to obtain the low-cost high-activity catalytic type desulphurization active coke. By virtue of the low-cost high-activity catalytic type desulphurization active coke, the problems of low desulfuration capacity, regeneration frequency, large use amount and high operation cost of the currently-used desulfuration active coke can be solved.

The invention discloses a preparation method of mesoporous ceramic. The mesoporous ceramic is prepared by taking a traditional pore-forming agent clad with an organic metal framework compound as a novel ceramic pore-forming agent, wherein the organic metal framework compound is a coordination polymer, has a three-dimension porous structure and is a high-stability mesoporous material taking metal ions as connection points; meanwhile, the surface of the traditional pore-forming agent is subjected to polydopamine membrane cladding treatment to improve the complexation of the metal ions on the surface of the traditional pore-forming agent, thereby realizing the high-efficient cladding of the organic metal framework compound. The novel pore-forming agent has good pore-forming capability equal to that of the traditional pore-forming agent, and also endows traditional ceramic pores with multidimensional mesoporous structures, the micropore performance of ceramic is obviously improved, and a prepared ceramic product is higher in porosity and more uniform; in addition, the metal ions can be converted into metal or metal compounds in a sintering process, so as to further improve the comprehensive performance of a ceramic body.