33results about How to "No structural defects" patented technology

An open magnetic circuit type multilayer coil free from a structural defect such as interlayer separation or cracking. On both major surfaces of a nonmagnetic layer (13) are provided a layered body (10) where magnetic layers (11) are formed and a coil (L) where coil conductors (15, 16) that are formed on the layered body (10) and have a specified thickness are spirally interconnected. The coil conductor (16), out of the coil conductors (15, 16) formed in the layered body (10), located on the major surface of the nonmagnetic layer (13) has a small thickness that is not greater than 0.6 times those of the magnetic layer (11) and the nonmagnetic layer (13) but is greater than 0.1 times that of the coil conductor (15) not located on the major surface of the nonmagnetic layer (13).

The invention provides an energy-saving sheet material and a manufacturing method thereof. The energy-saving sheet material comprises at least one layer of upper sheet material, at least one layer of lower sheet material, at least one layer of inner sheet material and a plurality of support structures, wherein the upper edge of the upper sheet material and the lower edge of the lower sheet material are respectively straight lines; the inner sheet material is arranged between the upper sheet material and the lower sheet material, and the sheet materials in adjacent layers are separated by the support structures; an exhaust port is formed in the side of the inner sheet material, and is a through groove penetrating through the upper surface and the lower surface of the inner sheet material; the edges of the upper sheet material, the lower sheet material and the inner sheet material are sealed and closed by a sealing material, so that vacuum layers are formed among the sheet materials; an exhaust pipe is arranged in the exhaust port, the open end of the exhaust pipe is positioned on the inner side of the exhaust port, and the closed end of the exhaust pipe is positioned on the outer side of the exhaust port and exists in the space formed between the upper sheet material and the lower sheet material. The energy-saving sheet material is fully planar and is free of structure defect, so that the using strength of the energy-saving sheet material is enhanced.

The invention relates to a cooling and sterilizing process for a protein preparation and a special horizontal type shaking table thereof. In the prior art, a sterilizing device for the protein preparation has the defects of poor stability and difficult control of parameters. The special shaking table comprises a cycloidal pin wheel speed reducer, a driving motor and a shaking table, wherein an eccentric outer gear, an eccentric inner gear, a gear shaft sleeve and a left gear base are fixedly arranged on the cycloidal pin wheel speed reducer and an output shaft of the driving motor; the left gear base is connected with one end of a regulating lead screw; the other end of the regulating lead screw is connected with a right bearing base; a shaking amplitude adjustment device is connected with the bearing base and one end of a shaking oscillating bar; the other end of the shaking oscillating bar is connected with one end of a rotating shaft of the shaking oscillating bar; and the other end of the rotating shaft of the shaking oscillating bar is connected with the shaking table by a transmission device in a shaking table cylinder body. The special horizontal type shaking table has a reasonable and compact structure, is reliable in strength, rigidity and toughness of key positions, small in assembly stress of parts and high process performance, process parameters are easy to control, and the optimal bacteriostatic effect can be achieved.

The invention discloses a silver discoloring preventive intermediate, a composition and discoloring preventive silver and a preparation method. The intermediate is a mixed solution comprising tetraethoxysilane, boric acid, bismuth nitrate and an organic solvent, wherein the weight ratio of tetraethoxysilane to boric acid to bismuth nitrate is 10-13: 1.5-3: 7-10. The composition is a glass body andcomprises silicon dioxide, diboron trioxide and bismuth trioxide based on the weight ratio of 30-35: 10-15: 50-55. The discoloring preventive silver is synthesized by the following steps: (1) mixingboric acid and tetraethoxysilane organic solutions to obtain a solution A; (2) mixing the solution A and bismuth nitrate to obtain the silver discoloring preventive intermediate; (3) soaking silver inthe silver discoloring preventive intermediate; moving out; and forming an intermediate layer on the surface of silver; and (4) thermally processing the intermediate layer; heating; and then decreasing the temperature to obtain the discoloring preventive silver. With the adoption of the silver discoloring preventive intermediate, the color remaining time of the discoloring preventive silver can be prolonged, and meanwhile, the corrosion resisting effect of the discoloring preventive silver can be improved.

The invention provides a method for preparing graphene by stripping natural graphite powder in a CO2 expanded liquid by introducing dislocation glide actions, belonging to the technical field of nano materials. According to the solubility-parameter-based thermodynamic calculation process, the appropriate organic solvent is selected, the system temperature, pressure and CO2 to organic solvent ratio are regulated, the physicochemical properties of the multicomponent system are regulated, and the interaction force between the graphene and organic solvent is changed, so that the surface tension of the mixed system is matched with the surface energy of the graphene. The non-normal force is introduced to generate the dislocation glide acting force, the graphite flakes can transversely slide by using the graphite self lubrication of the graphite, and the intercalation action of the small molecule CO2 is utilized to efficiently strip the graphite powder so as to prepare the graphene. By the aid of the dislocation glide action and energy conversion, the intercalation action of the CO2 small molecule is utilized, thereby enhancing the stripping efficiency. According to the method, the subsequent treatment process is simplified, and the highly-concentrated graphene dispersion solution can be obtained after the pressure relief operation.

The invention belongs to the technical field of polymer materials, and in particular relates to a star-shaped block copolymer and a preparation method thereof. The specific method is: through Huisgen cycloaddition reaction, polystyrene and polylactic acid or polyoxyethylene are successively connected to the same core molecule to form an A2B three-arm star-shaped block copolymer. The three-arm star-shaped copolymer prepared by the present invention has a precise and controllable molecular chain structure, can be used for self-assembly in solution to form core-shell nanomicelles, and can also be used for microphase separation under heating to form regular and ordered Nano-phase separation structure, and further prepared into a nano-organic porous material with regular pore structure and high specific surface area, has broad application prospects in the fields of drug sustained release and nano-separation.