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72results about How to "No need to wash" patented technology

Battery-grade ferric phosphate and preparation method

The invention discloses battery-grade ferric phosphate and its preparation method. The battery-grade ferric phosphate is anhydrous ferric phosphate FePO4. The powder is composed of monodisperse olive-shaped particles with regular shapes. Bulk density is high, and tap density reaches up to 1.5-1.6 g/cm<3>. The preparation method comprises the following steps: using trivalent ferric salt ferric nitrate as an iron source, and using phosphoric acid or ammonium biphosphate or diammonium phosphate or ammonium phosphate as a phosphorus source; adding an ammonia-water solution as a pH value conditioning agent into a mixed aqueous solution of the iron source and the phosphorus source, stirring and reacting and ageing to generate high-density olive-shaped crystalline compound NH4Fe2(OH)(PO4)2.2H2O containing ammonium, hydroxide and crystal water; and carrying out solid-liquid separation, roasting and decomposing to prepare the battery-grade ferric phosphate. The battery-grade ferric phosphate is an ideal raw material for preparing the lithium ion batteries cathode material lithium iron phosphate. The preparation method is suitable for mass, economic, stable and reliable production of the high-quality high-density battery-grade ferric phosphate, has no discharge of waste water, has obvious advantages, and has practical value.
Owner:NINGBO UNIVERSITY OF TECHNOLOGY +1

Method for rapidly synthesizing nanometer 3A molecular sieve

The invention discloses a method for rapidly synthesizing a nanometer 3A molecular sieve. The method is implemented in a way that aluminum hydroxide, sodium hydroxide, potassium hydroxide, potassium silicate and amorphous silicon dioxide are taken as raw materials for synthesizing the nanometer 3A molecular sieve. The method for synthesizing the nanometer 3A molecular sieve comprises the following steps of: dissolving an aluminum hydroxide solid into a mixed solution of sodium hydroxide, potassium hydroxide and potassium silicate; heating and crystalizing while stirring, wherein the alkalinity of the solution is gradually increased along with crystallization; adding aluminum hydroxide and amorphous silicon dioxide for reacting with an alkali; continually crystalizing a product; and filtering and drying a crystallization product to obtain a nanometer 3A molecular sieve product. The method has the characteristics that: (1) the reaction program and process flow are simple, and the synthesis time is short; (2) the raw material utilization ratio is high, and the prepared 3A molecular sieve has low pH value and is not required to be washed; and (3) the prepared nanometer 3A molecular sieve has the advantages of high product purity, large specific surface area, high selective adsorption performance and the like, and has low price.
Owner:ZHEJIANG NORMAL UNIVERSITY

Antibacterial treatment process of curtain fabric material with functions of free washing and environmental protection

The invention relates to an antibacterial treatment process of a curtain fabric material with functions of free washing and environmental protection, used for the antibacterial treatment of a non-woven fabric made from polypropylene fibers and used as the curtain fabric material with functions of free washing and environmental protection. The antibacterial treatment process comprises the following steps: immersing a non-woven fabric into a rolling groove of a rolling cart, which contains antibacterial agent solutions with the proportion of 1:20-100 and then rolling the non-woven fabric by rollers for padding treatment; sending the non-woven fabric after the padding treatment to a heat setting machine to carry out heat setting treatment within the temperature range of 60-130 DEG C, wherein the padding treatment and the heat setting treatment of the non-woven fabric are synchronously carried out continuously, and the movement speed of the non-woven fabric is 500-1500m/h. The curtain fabric material produced by the invention has the advantages of good air permeability, easy maintenance of dry curtain fabric surfaces, dirt resistance, free washing, no toxicity and irritative peculiar smell, easy recycling, environmental protection, good antibacterial property and low antibacterial treatment cost.
Owner:WUJIANG CITY JIREH GREEN TECH

Method for reducing molecular weight of starch through dry method

The invention discloses a method for reducing the molecular weight of starch through a dry method. The method comprises the steps of firstly, feeding the starch into a reaction still, and inputting ozone into the reaction still to react with the starch; then, separating the starch which is subjected to dry treatment by using the ozone by feeding the starch into a cyclone dust remover, thus obtaining the starch of which the molecular weight is reduced. According to the method disclosed by the invention, high-quality modified starch which is higher in carboxyl group content, low in molecular weight and lower in characteristic viscosity value can be prepared; meanwhile, the whole reaction process of the method is kept in a dry treatment process, a product is green and healthy, no reagent residue exists, and the safety of the modified starch is ensured, so that the method can be widely applied to various modern industries such as papermaking, spinning and particularly food and medicine; meanwhile, an operation technology of the method is simple in operation, no sewage and wastewater are discharged, washing is not needed, and the productivity is up to 99 percent or more, so that the operation technology can replace a traditional wet technology to prepare LMW (Low Molecular Weight) oxidized starch, and an actual application significance is obtained.
Owner:WUHAN POLYTECHNIC UNIVERSITY

High-strength and high-perviousness filtering cloth material

The invention discloses a high-strength and high-perviousness filtering cloth material. The filtering cloth material is prepared from the following raw materials in parts by weight: polyethylene, polypropylene, polyvinylpyrrolidone, carbon nanotube, polyethylene glycol, carbon fiber, modified polyethylene acrylate, ionic modified clay, surface modifying agent, thermoplastic polyurethane, anti-ageing agent and lubricating agent. The high-strength and high-perviousness filtering cloth material disclosed by the invention has the beneficial effects that by scientific proportioning of all the materials and components, under the synergistic effect of all the components, the strength and the perviousness of the filtering cloth material are improved, so that the filtering cloth material can be applicable to the condition of rapid filtration and has a wide application range; meanwhile, by the comprehensive effect of the ionic modified clay, the surface properties of the polyethylene and the polypropylene are improved, and the filtering effect is improved; due to addition of the modified polyethylene acrylate and the thermoplastic polyurethane, the filtering effect of the filtering cloth material is further improved, and the filtering capability of the filtering cloth is improved, so that the high-strength and high-perviousness filtering cloth material has great promotion value.
Owner:ANHUI YUANYE FILTER MATERIAL
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