30results about How to "High quality preparation" patented technology

The invention discloses a photoetching method and device of a roll to roll flexible substrate. By designing an exposure infrared transmission path and an exposure mode, photoetching of the flexible substrate is achieved, and process steps of attaching a traditional flexible substrate onto a glass substrate, final substrate stripping and the like are not needed; and on one hand, the process device cost is saved, and on the other hand, the production yield and the production rate are improved. The fabrication process is simple, the production rate can be effectively improved, and rapid and high-quality etching on the flexible substrate can be achieved on the condition of lower production cost. The device disclosed by the invention mainly comprises an infrared light source, a flexible substrate transfer system and a photoresist coating device. The device is simple in structure, and is convenient to use, maintain and fabricate.

The invention discloses a method for preparing a perovskite solar cell by chemical vapor deposition, which is characterized in that: a dense TiO2 film is deposited on the surface of the FTO film of FTO conductive glass as an electron transport layer; The perovskite light absorbing layer film is prepared by deposition method; the hole transport layer is prepared on the perovskite light absorbing layer film; the Ag electrode or Au electrode is evaporated on the hole transport layer as the top electrode, and the perovskite solar cell is obtained. . The preparation method of the present invention is simple, the cost is low, the film quality of the prepared perovskite light absorbing layer is high, the substrate coverage is good, the stability and repeatability are good, and the preliminary conversion of the prepared planar heterojunction perovskite solar cell The efficiency reaches 11%.

The invention discloses a device and method for preparing microscopic samples of cement stone and testing the bending and tensile strength, including a workbench, a support frame and a chute track are fixedly arranged on the workbench; a grinding and cutting assembly is fixedly arranged on the support frame for Grinding and cutting the sample to form a sample, and the support frame is also fixedly equipped with a test component to test the bending and tensile strength of the sample; the grinding and cutting component and the test component are both located above the chute track, and are used to fix the sample or the operating table of the sample It is set on the chute track and can move along the chute track.

The invention discloses a multi-channel tunable Tamm plasma perfect absorber, comprising: MIM waveguide and metal-DBR-metal intercalation-DBR-metal structure in the waveguide, wherein metal-DBR-metal intercalation-DBR-metal The thickness of the metal on both sides of the structure is different, with the metal intercalation as the center, the period numbers of the DBRs on both sides are N1 and N2 respectively. The invention is a novel multi-channel tunable Tamm plasmon perfect absorber, TM polarized light is incident from the left side, through the MIM structure, the Gap-SPPs can be efficiently excited in the waveguide, and the metal-DBR in the waveguide ‑Metal intercalation‑DBR‑metal structure can excite multiple optical Tamm states, and couple with each other to form multiple split absorption peaks, realizing multi-channel narrow-band perfect absorption. The surface plasmon absorber of the invention has a compact structure, is easy to process and has high-quality preparation, and has good application prospects in the fields of dangerous substance detection, hyperspectral multi-frequency imaging, coherent thermal radiation and stealth technology.

The invention relates to a folding box (1), comprising a base and first and second side walls (2, 3) pivotably connected to the base which, together with the base, form a box open at the top in a folded open state, as well as at least one retaining element (4) disposed on a first side wall (2) and at least one pin (5) mounted so as to be rotatable on a second side wall (3), and the at least one pin (5) has a cross-section that is not circular on at least one pin end (5a, 5b) and the at least one pin end (5a, 5b) locks the first to the second side wall (2, 3) by means of the retaining element (4) in a first rotational position and unlocks said side walls (2, 3) in a second rotational position.

The invention discloses a large-area preparation method of perovskite films suitable for various substrate shapes. The method is characterized by comprising steps as follows: lead nitrate is used as a lead source, thiourea is used as a sulfur source, ammonia water is used as a complexing agent, the reaction speed and temperature are controlled, and lead sulfide films are produced on substrates in any shapes through chemical baths; then the lead sulfide films are converted into perovskite light absorption layer film materials with a solution immersion method or a chemical vapor deposition method. Perovskite light absorption layers are prepared through the chemical baths in combination with the solution immersion method or the chemical vapor deposition method, the method has the advantages of low cost, simplicity in operation, capability of realizing large-area amplification and the like, meanwhile, the prepared films are not affected by the substrate shapes and materials, and the high-quality perovskite films can be prepared on rigid or flexible substrates in various complex shapes such as curved surfaces, spherical surfaces and the like.

The invention discloses a production device for fabric or wallpaper integrated wall panels. The prepared wall panels are provided with the frame around the periphery of the slab, and the fabric or wallpaper is clamped on the frame and the frame. between the slabs, in this way, the service life of the wallboard can be effectively improved, the problems such as cracking at the edge of the fabric or wallpaper and the slab can be prevented, and the performance and life of the wallboard can be improved. , fabric or wallpaper supply mechanism, frame grabbing and clamping manipulator mechanism, flattening and rolling mechanism, operation conveying mechanism and glue spraying mechanism, which can realize the automatic production of wall panels and improve the production capacity and efficiency. When setting the frame, the pressing scraper is used and the sliding of the pressing scraper is used to realize the flattening and rolling of the fabric or wallpaper, so as to achieve high-quality production.

The invention provides a method for preparing transition metal carbide powder through electric field and / or ultrasonic field reinforcement and belongs to the field of smelting of transition metal ceramic powder. The method comprises the following steps: mixing transition metal powder with a high smelting point with carbon powder according to a ratio, then adding an adhesive, mixing, pressing and roasting to obtain a sintered sheet; dewatering fused salt, then carrying out pre-electrolysis, immersing the sintered sheet into the dewatered fused salt, applying electric field and / or ultrasonic field reinforcement for carrying out carbonation reaction, washing and drying to obtain the transition metal carbide powder. The method is capable of preparing the carbide powder by taking transition metal as a raw material and using a fused salt medium environment by means of an electric field and / or ultrasonic field reinforcement method; the problems of incomplete oxygen removal in oxides and low quality of the product can be effectively solved; high-efficiency and high-quality preparation of the transition metal carbide powder under a relatively low temperature can be achieved; the used equipment is simple to operate.

The invention provides a full-automatic phoenix roll machine, which structurally comprises a fixed base; the fixed base is provided with a fixed stand and a stand assembly; a plurality of baking ovens electrically connected with the stand assembly are evenly arranged on the surface of the fixed stand and along the periphery of the stand assembly; a sea sedge suction device, a flip support, a turnover device and a rolling device are also arranged at the periphery of the edge of the fixed stand on the fixed base; a charging device is also arranged beside the sea sedge suction device; the top part of the turnover device is also provided with an accessory device. According to the full-automatic phoenix roll machine provided by the invention, multiple making process devices for phoenix rolls are gathered together innovatively; the fixed stand directionally rotates at a fixed angle along with the stand assembly under the action of a rotating shaft; each baking oven rotates to a position below the corresponding device, so not only is waiting time during processing saved, is the efficiency improved, is safety high and is energy saved but also the number of workers required by manual operation is reduced, and the labor strength is reduced; the charging to rolling of the phoenix rolls are finished in one step; the full-automatic phoenix roll machine runs automatically in the whole process, and is efficient and fast.

The invention discloses a mild discharge preparation method and device for fluorinated graphene, and relates to the technical field of graphene preparation. The present invention overcomes the bonding force of the graphite layer through the chemical carbonization process and the physical stripping process by using an electric field, so that the carbonized graphite carbon is successfully stripped into sheets, so it can be applied to almost all carbon-containing carbon sources, and realizes the guarantee of fluorinated graphene At the same time of high-efficiency and high-quality preparation, the raw materials for its preparation are extended to carbon-based substances, that is, almost all carbon-containing substances can be used as raw materials for this process, and the raw materials have a wide range of sources and low cost. Using active metals as catalysts, power on and preheat first, so that the temperature of the carbon source and the active metal increases to increase the activity of the metal, and then increase the voltage to achieve graphitization of the carbon source. The reaction is rapid and the energy consumption of the reaction is greatly reduced. It has a good conversion rate. , the efficiency of preparing fluorinated graphene powder is high, and the preparation of fluorinated graphene in a low-temperature environment is realized, thereby realizing low energy consumption and reducing the preparation cost.

The invention discloses a method for preparing a macitentan related substance. Specifically, the invention relates to a method for preparing a metabolic product (a compound of a formula I) of a pulmonary hypertension-resistant drug macitentan (N-[5-(4-bromophenyl)-6-[2-[(5-bromo-2-pyrimidyl)oxo] ethyoxyl]-4-pyrimidyl]-N'-propanesulfonamide). The method comprises the following steps: carrying out a heating reaction on macitentan, and obtaining a target compound. According to the method, the target product can be efficiently prepared at high purity. The structural formula is as shown in the specification.

The invention discloses a hook-shaped commutator composed of a bakelite powder base and commutating copper sheets. The hook-shaped commutator is characterized in that insulation between the commutating copper sheets is carried out by milling insulating grooves with a circular milling cutter between, the tops of the insulating grooves is subjected to arc transition so as to be prevented from being pierced; the commutating copper sheets are elongated bodies before the insulating grooves are milled and hooks are formed; the outer side of each elongated body is an arc surface, the height of the top, where a hook is to be formed, of the elongated body is H; the middle positions of the left and right sides of the elongated body are provided with connected upper and lower punching notches respectively, the distance between the top of the upper punching notch and the top of the elongated body is less than H; the width of the lower punching notch is narrow; the width of the upper punching notch is wide; the upper punching notch has a punching slope in the radial direction, the punching slopes of adjacent elongated bodies define a tapered mouth with an inward large end. The hook-shaped commutator prevents glue from entering the insulating grooves, enables high-quality production and high mechanical strength, and facilitates automatic insertion and mass production.