42results about How to "No equipment required" patented technology

The invention relates to a novel connection method of ceramic bodies. The connection method comprises the following steps: pouring a first ceramic slurry containing first ceramic powder, a first water-soluble maleic polymer and water into a mold, and performing in-situ solidification and ageing, thereby preparing a first ceramic body in the form of ceramic gel; pouring a second ceramic slurry containing second ceramic powder, a second water-soluble maleic polymer and water into a mold and performing in-situ solidification and ageing, thereby preparing a second ceramic body in the form of ceramic gel; and performing surface flatness treatment on connecting surfaces of the prepared first ceramic body and second ceramic body, and directly connecting end to end to ensure that the first ceramic body is connected with the second ceramic body. By adopting the novel connection method disclosed by the invention, the ceramic gels can be connected by only using bonding effects of water-soluble maleic organic molecules in the ceramic gels under the condition that any binding agent is not used.

The invention relates to a wet metallurgic method for effectively separating palladium from silver electrolyte by adopting modified polyacrylonitrile resin, and the process is free from pollution. The method adopts a technical scheme that: polyacrylonitrile resin is modified by adopting a hydroxyl amine hydrochloride solution to obtain a novel chelating resin namely amidoxime polyacrylonitrile resin; silver electrolyte which is roughly purified to remove heavy metal impurities is adsorbed by adopting the amidoxime polyacrylonitrile resin, so that palladium in the solution is loaded onto the resin, and the resin is subjected to primary desorption by adopting an acidic thiourea solution to obtain a palladium-containing desorption liquid; the resin is subjected to secondary desorption by adopting a high-concentration hydrochloric acid solution to obtain a silver-containing desorption liquid; and the resin which is subjected to twice desorption is regenerated by adopting a hydroxyl amine hydrochloride solution, and is returned to adsorb the palladium-containing silver electrolyte. According to the method, palladium and silver can be effectively separated, the adsorbed solution can be directly returned to silver electrolysis, the operation is simple, the purification time is short, the recovery rate of noble metals is high, and the practicality is strong.

The invention discloses a NbSe 2 A method for studying the tribological properties of a single crystal as a solid lubricant for electrical contact, including the following steps, S1: using NbSe 2 Single crystal preparation of NbSe 2 Layer; S2: Research on NbSe 2 The surface characteristics of the layer; S3: the NbSe 2 layer as a lubricating layer for reciprocating friction and wear experiments to study the NbSe 2 Layer tribological properties; S4: using different preparation methods, repeat steps S1, S2 and S3; S5: NbSe prepared by different preparation methods 2 The tribological properties of the layers were compared and analyzed. The research method in the present invention will NbSe 2 Single crystal is prepared into NbSe by non-preparation method 2 layer, conduct friction and wear experiments, and study NbSe through the study of tribological properties 2 Optimal use of single crystals directly as solid lubricants for electrical contacts, NbSe 2 The preparation method of the layer is simple, the cycle is short, no equipment is required, and the cost can be saved.

The invention provides a method for preparing a large-size ceramic biscuit. The method includes the steps that firstly, preprocessed ceramic slurry with uniformly scattered gel systems is injected into a forming die to undergo in-situ solidification to obtain ceramic biscuit gel, the forming die is sealed so that the ceramic biscuit gel can be desolventized at the temperature of 30-80 DEG C and shrinks for twenty hours, and after seven days, drying processing is carried out and the large-size ceramic biscuit is obtained.

The invention discloses a method for preparing a heat-insulating, anti-fogging, self-cleaning super-hydrophilic transparent coating. Step 1, preparing nano-heat-insulating powder slurry dispersion; Step 2, preparing a hydrophilic polymer with a certain degree of crosslinking solution; Step 3, preparing a super-hydrophilic transparent coating with heat insulation, anti-fog, and self-cleaning functions; dispersing the nano-insulation powder slurry obtained in Step 1 and step 2 to obtain a hydrophilic polymerization with a certain degree of crosslinking Stir the material and additives evenly, then spray the obtained solution on the surface of the glass substrate, put the coated glass in an oven to dry, and after drying, you can get a super-friendly glass with heat insulation, anti-fog and self-cleaning functions. Water clear coat. The invention solves the problems of poor anti-fog durability, poor water resistance, poor weather resistance and impermanence to wiping existing in the existing super-hydrophilic coating.

The invention discloses a traditional Chinese medicine composite for treating a headache and a preparation method of the traditional Chinese medicine composite. The traditional Chinese medicine composite is prepared by ligusticum wallichii, rhizoma gastrodiae, angelica dahurica, radix paeoniae alba, rhizoma corydalis and scorpion. According to the traditional Chinese medicine composite and the preparation method, the traditional Chinese medicine composite is centralized in effective part, small in dosage and convenient to take, and a modern pharmacology research verifies that the traditional Chinese medicine composite is precise in curative effect, safe, reliable, fewer in adverse effect, and used for treating the headache. The traditional Chinese medicine composite has effects of promoting blood circulation, dispelling wind, dredging collaterals and alleviating a pain, and can be used for prevention and treatment of various headaches such as migraine and a tension headache.

The invention relates to an ambient-pressure drying preparation method for mineral nanofiber aerogel. Nonmetallic mineral raw materials are purified and scattered, so that mineral nanofibers are acquired; the mineral nanofibers are scattered in a proper amount of water, a foaming agent, a bonder and the like are added, a mixture is fully and evenly stirred, and even colloidal sol containing a certain number of the nanofibers is acquired; the colloidal sol is converted into stable foam through physical foaming or chemical foaming or physical-chemical foaming; the foam is poured into a mold, ambient-pressure drying or ambient-pressure maintenance-drying is conducted, and therefore the mineral nanofiber aerogel is acquired. The prepared mineral nanofiber aerogel is simple in process, short in production period, high in controllability, low in equipment requirement and easy to industrially produce on a large scale. The prepared mineral nanofiber aerogel has the advantages of being controllable in shape, low in density and heat conductivity, good in mechanical property and the like.

The invention belongs to medical apparatuses and instruments for veterinary use, and aims at providing a disposable cervical cell brush for dogs and cats. The disposable cervical cell brush comprises a spherical guide head, a cell brush head, a sampling rod and a protection sleeve. Bristles, arranged in a spiral mode, of the cell brush head are perpendicular to the sampling rod, so that the whole cell brush head is in a cylindrical shape. One end of the cell brush head is inserted into the spherical guide head. The other end of the cell brush head is embedded in the sampling rod. The end, close to the cell brush head, of the sampling rod is provided with an annular groove. The tail end of the sampling rod is provided with a handle shaped like a fishtail. The protection sleeve is arranged outside the sampling rod. The disposable cervical cell brush has the advantages that the whole spherical face of the spherical guide head is smooth, so that it is ensured that the cell brush can not damage the vaginal wall in the process of entering and leaving the vagina and in the process of sampling; the protection sleeve is arranged outside the cell brush and the sampling rod for protection, on one hand, it can be ensured that no damage is caused to the vaginal wall in the process of entering and leaving the vagina, and on the other hand, contamination which is caused to the cell brush by the vulva can be avoided; the disposable cervical cell brush is safe, accurate, free of trauma, free of requirements for devices, wide in application range, and the like.