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334results about How to "Unique craft" patented technology

Flexible lithium ion battery and preparation method thereof

The invention discloses a flexible lithium ion battery. The flexible lithium ion battery is composed of a case packaging and an electrical core packaged in the case packaging; the electrical core comprises a cathode and an anode, an upper extraction electrode arranged on the cathode, and a lower extraction electrode arranged on the anode; the electrical core also comprises a polymer electrolyte fire-retardant composite layer arranged at the middle part of the electrical core; the polymer electrolyte fire-retardant composite layer is a composite thin film composed of a polymer electrolyte layer arranged in the middle, and solid fire retardant layers arranged on the upper surface and the lower surface respectively. The invention also discloses a preparation method of the flexible lithium ion battery. The solid fire retardant-containing flexible lithium ion battery is high in efficiency, long in cycle life, and large in energy density, and is capable of satisfying electric energy demands of flexible electronic devices. The solid fire retardant is capable of improving safety performance of the flexible lithium ion battery effectively. The preparation method is unique, is convenient for processing and batch production, and is high in practical value.
Owner:东莞市鸿德电池有限公司

Manufacturing method of high-precision pressure sensor based on silicon-silicon bonding

The invention discloses a manufacturing method of a high-precision pressure sensor based on silicon-silicon bonding. The high-precision pressure sensor comprises a sensitive silicon wafer layer and a substrate silicon wafer layer and is characterized in that the substrate silicon wafer layer is connected to the back of the sensitive silicon wafer layer, and the sensitive silicon wafer layer and the substrate silicon wafer layer use silicon-silicon bonding process to form a pressure sealing cavity; the substrate silicon wafer layer and the sensitive silicon wafer layer are made of homogenous monocrystalline silicon materials, and the substrate silicon wafer layer is provided with a pressure guide through hole in the center. The manufacturing method has the advantages that the substrate silicon wafer layer and the sensitive silicon wafer layer are made by using the monocrystalline silicon materials as the substrates, the substrate silicon wafer layer and the sensitive silicon wafer layer are connected in an airtight manner through the silicon-silicon bonding process, the pressure sealing cavity of a silicon-silicon homogenous material structure is formed, various influences, caused by the pressure sealing cavity of the silicon-glass heterogeneous material structure of a conventional pressure sensor, on the performance of the sensor due to the feature difference of two different materials are avoided, static pressure errors are reduced effectively, temperature excursion of the sensor is lowered, and the comprehensive precision of the sensor is increased.
Owner:SHENYANG ACAD OF INSTR SCI

Method for preparing indium vanadate nano particles

The invention relates to a method for preparing indium vanadate nano particles, The method comprises the steps of: dissolving indium nitrate, ammonium metavanadate and hexadecyl trimethyl ammonium bromide in water, mixing according to the mol ratio of indium to vanadium of 1: (1 to 2), then adding the hexadecyl trimethyl ammonium bromide according to a mol ratio of indium to vanadium to hexadecyl trimethyl ammonium bromide of 1: (1 to 2): (0.02 to 0.05), stirring for 10 to 12h, regulating a pH value to 8 by utilizing potassium hydroxide, and filtering, washing and drying generated precipitate to obtain solid powder; and mixing the solid powder with 10mol/L of potassium hydroxide solution according to a mass ratio of 1: (25 to 50), then putting into a reactor to have hydro-thermal treatment for 8 to 24h at the temperature of 150 to 180 DEG C to obtain an indium vanadate precursor, and drying the indium vanadate precursor and then placing into a muffle furnace to be baked for 1 to 2h at the temperature of 450 to 550 DEG C and then naturally cooling to obtain the indium vanadate nano particles. The method has the advantages of simpleness in operation, relatively low synthesized temperature, controllable appearance shape and high photocatalytic activity of the indium vanadate nano particles; and the application field of an indium vanadate nano material can be further widened.
Owner:CHANGSHA UNIVERSITY

Method for synthesizing high molecular retanning dyeing auxiliary agents through enzyme catalysis

The invention relates to a method for synthesizing high molecular retanning dyeing auxiliary agents through enzyme catalysis, which comprises the following steps: dissolving p-aminobenzene sulfonic acid and 2, 3-dihydroxy naphthalene-6-sodium sulfonate into de-ionized water, using a sodium bicarbonate solution for regulating the pH value of the system, and finally, obtaining the retanning dyeing auxiliary agents through co-polymerization reaction carried out under the horse radish peroxidase (HRP) catalysis. The invention uses HRP as catalysts of the polymerization reaction, and the HRP has the advantages of high efficiency, high selectivity and environment protection when being used for catalyzing the polymerization. The invention has the advantages that phenols or arylamines can carry out polymerization in ortho positions or para positions of hydroxide groups and amino groups for forming a polymer with directly connected C-C structures and large pi conjugated systems, the formaldehyde pollution in the traditional synthesized retanning agents is avoided, and at the same time, the products with the conjugated systems contain a large number of auxochromic groups such as -NH2, -OH and -SO3H and the like. Retanning leather is full and soft, and the dye absorption rate is higher than 99 percent, and in addition, the retanning dyeing auxiliary agents have obvious dyeing aid effect.
Owner:SHAANXI UNIV OF SCI & TECH

Preparation method of modified Chinese gall tanning extract environmentally-friendly leather tanning agent

The invention relates to a preparation method of a modified Chinese gall tanning extract environmentally-friendly leather tanning agent. Graft modification is performed on a Chinese gall tanning extract with p-hydroxy benzenyl sulfonate sodium and nekal under the catalytic action of horseradish peroxidase / H2O2 so as to obtain the environmentally-friendly leather tanning agent. The nekal is introduced into the leather tanning agent, so that the dissolubility of the Chinese gall tanning extract and the penetrability of the Chinese gall tanning extract in a leather fiber can be improved remarkably; and the p-hydroxy benzenyl sulfonate sodium is introduced, so that the tanning effect of the Chinese gall tanning extract can be enhanced. When the modified Chinese gall tanning extract related bythe invention is applied to major tanning, the shrinkage temperature can be raised to be 70 and 75 DEG C and leather thickening effect is remarkable; when the Chinese gall tanning extract is applied to retanning, the Chinese gall tanning extract has high seepage velocity, the leather body of finished leather is full, has moderate elasticity and fine grain surface, and incision fibers have high dispersibility and light colors; and the product is beneficial to the realization of environmentally-friendly leather production and plays a positive role in reducing pollution caused by leather tanning.
Owner:南通安广美术图案设计有限公司
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