6results about How to "Improve evenly" patented technology

The invention discloses a method for preparing a single-layer tungsten diselenide nanoband based on a space confinement strategy. By changing the flow and the growth time of hydrogen, effective control on the width and the thickness of a nanoband can be realized. The method comprises the following steps: uniformly spraying tungsten trioxide powder to one substrate, then covering the substrate by the other substrate, and forming micro reaction space which is of a 'sandwich'-like structure. Growth of a tungsten diselenide nanoband is carried out by utilizing a constant-pressure chemical vapor deposition method; physicochemical characteristics of a one-dimensional transition metal chalcogenide strongly depend on suspension key types on the edge of the one-dimensional transition metal chalcogenide, metallic properties are displayed by an ultranarrow band, and conversion from the metallic properties to semiconductor properties can be displayed from the edge to the center of a wider band; the tungsten diselenide nanoband is widely applied to micro-nano photoelectric devices due to the special property; industrial production of the tungsten diselenide nanoband can be realized through an experimental method of the invention.

The application discloses a kind of nano-silica polycarbonate film moisture permeability detection device, it is related to polycarbonate film detection technical field, including water storage tank and adjusting assembly, the top of water storage tank is connected with load disc by one-way valve, and the inside of load disc is placed with lower partition, the top of lower partition is provided with top cover, and the inside of top cover is placed with upper partition, the periphery of load disc is connected with connecting assembly.The application forms multiple independent test chambers by lower partition and upper partition, which makes it possible to place the same sample in multiple different humidity environments simultaneously and efficiently for comparison testing when detecting the moisture permeability of nano-silica polycarbonate film. The humidity environment is accurately generated by the humidifying unit and drying unit, and the mixture ratio of dry and wet gas input into each chamber is flexibly adjusted by the bus adjusting valve, thereby achieving wide-range humidity control.

The traditional Chinese medicine decoction piece processing slicing device comprises a support and a medicinal material body arranged in a sliding and inserted mode, four supporting columns distributed in a rectangular mode are fixedly connected to the lower end of the support, and a transversely-arranged guide cylinder is fixedly connected to the position, close to the right side edge, of the inner bottom of the support. A transversely-arranged second electric push rod is fixedly inserted into the inner right side wall of the guide cylinder, the right end of the second electric push rod sequentially penetrates through the guide cylinder and the support, a push block is fixedly connected to the left end of the second electric push rod, and limiting blocks are arranged on the front portion, the rear portion and the top of the medicinal material body correspondingly; the end, away from the medicinal material body, of the limiting block is fixedly connected with a first electric push rod, and the end, away from the limiting block, of the first electric push rod penetrates through the guide cylinder. By means of mechanisms such as the sliding block and the guide cylinder, the medicinal material thickness adjusting and slicing function is achieved, meanwhile, medicinal materials can be effectively prevented from inclining in the slicing process, and the slicing uniformity is remarkably improved.

The utility model discloses a mobile phone screen pasting film device, include: base, its characterized in that still include mobile phone main part, the mobile phone main part is placed in the central position department of base top, and the base on mobile phone main part one side and one end is provided with baffle respectively, the frame body is set up in the top of base, and the frame body is provided with extruding roller through support, annular air bag, annular air bag sets up in the inside of extruding roller, and the outside of annular air bag is equipped with the cover, small -size air pump, small -size air pump sets up in the top of frame body, and the output of small -size air pump is connected with annular air bag through air pipe, is provided with air valve on air pipe, first screw rod, first screw rod sets up in one side of base. The utility model discloses through being equipped with base, mobile phone main part, frame body, support, extruding roller, annular air bag, cover, air pipe and small -size air pump, through dynamic adaptation screen characteristic and optimization press together process, promote pasting film adaptability.

The application discloses a preparation method of high-density low-oxygen low-inclusion copper-chromium alloy contact material, which uses copper-tellurium alloy rods and high-purity degassed chromium blanks as raw materials, adopts high-purity rare earth lanthanum with a purity of 99.99%, and adopts a vacuum induction melting process to improve the uniformity and grain refinement degree of the copper-chromium-tellurium alloy, wherein the tellurium element is added in the form of copper-tellurium alloy rods, so that the volatilization of tellurium can be reduced, the uniformity of tellurium in the alloy ingot is ensured, and the copper-tellurium phase particle size is refined; the high-purity degassed chromium blank is used as the raw material to reduce the gas content and impurity content of the alloy ingot; the addition of the rare earth material La reduces the gas content of the alloy ingot and the metallographic impurity elements, and is beneficial to improving the comprehensive use performance of the copper-chromium-tellurium contact material; and the copper-chromium alloy prepared by the method has low gas content, dense structure, uniform composition, high purity, and is a high-quality and high-performance vacuum switch contact material.

The application discloses an ultra-thin woven pile electronic package material fabric and a preparation method thereof. The fabric is interwoven by warp yarn, weft yarn and terry yarn through satin weave, the thickness of the fabric is 0.20-0.25 mm, the fabric surface has pile formed by the terry yarn after sanding, the height of the pile is 0.05-0.10 mm, and the pile height H and the fabric thickness T satisfy H / T<=0.5. The warp yarn and the weft yarn are high-shrinkage polyester, the terry yarn is low-shrinkage polyester, and the root of the terry yarn is clamped and fixed by the warp yarn and the weft yarn in the shrinkage state. The application realizes accurate control and firm anchoring of the pile under the thickness of 0.20-0.25 mm through the cooperation of the satin weave and the high-shrinkage warp yarn and weft yarn, so that the woven pile fabric has the performances of ultra-thin, soft, size stability and non-falling of the cut edge, and the problems of the existing ultra-thin pile fabric, i.e. the pile penetrating the fabric or easily falling off, are solved.