51results about How to "Improve extension" patented technology

The invention provides a high-density polyvinyl chloride light conveying belt. The high-density polyvinyl chloride light conveying belt comprises a polyester fabric and a high-density polyvinyl chloride covering layer. The polyester fabric serves as a framework material. High-density polyvinyl chloride serves as a surface material and a filling material, and the high-density polyvinyl chloride light conveying belt with the corresponding thickness is obtained. The invention further provides a manufacturing method for the polyvinyl chloride light conveying belt. The high-density polyvinyl chloride light conveying belt obtained through the method has the beneficial effects that the interior is dense, the surface is flat, energy is saved, the tensile strength is high, and the surface is not prone to deformation and also has the beneficial effects that binding between the high-density polyvinyl chloride light conveying belt and the polyester framework material is firm, and the peeling strength is high. The using performance of the conveying belt can be obviously improved, and the service life of the conveying belt can be obviously prolonged; and the work condition of a conveyor can be better improved, the replacing period is prolonged, and the using cost is reduced.

The invention relates to a method for preparing a welding wire made of nickel base alloy. The welding wire comprises the following components by mass percent: 0.4-0.45% of C, 1.0-1.5% of Mn, 0.15-1.2% of Si, less than or equal to 0.025% of P, less than or equal to 0.02% of S, 28-30% of Cr, 49-51% of Ni, less than or equal to 0.1% of Co, less than or equal to 0.1% of Mo, less than or equal to 0.1% of Ti, less than or equal to 0.1% of Al, 4.0-5.0% of W and the balance of Fe. The method for preparing the welding wire comprises the steps of smelting the alloy, remelting electro-slag, carrying out hot forging and cogging down, carrying out hot rolling and annealing, carrying out acid pickling, polishing, carrying out cold drawing and removing hydrogen, wherein a CaF2, Al2O3 or CaO slag system is adopted in the step of remelting the electro-slag. The thinner welding wire can be prepared by the method for preparing the welding wire made of the nickel base alloy, the performances of the welding wire meet the requirements, and the welding wire is high in yield.

The invention provides a semi-super-junction MOSFET structure and a manufacturing method thereof. The structure comprises at least one transistor unit. Each transistor unit comprises an N-type heavily doped substrate, an N-type auxiliary layer and an N-type drift layer, wherein the N-type auxiliary layer and the N-type drift layer are sequentially formed on the N-type heavily doped substrate; a first P column and a second P column are formed in the N-type drift layer; the top ends of the first P column and the second P column are connected with a first P-type area and a second P-type area respectively; a grid structure is formed on the surface of the N-type drift layer and located between the first P column and the second P column; the two ends of the grid structure make contact with the first P-type area and the second P-type area respectively; the bottom ends of the first P column and the second P column are each connected with at least one P-island structure located in the N-type drift layer. Due to existence of the P-island structures, the groove depth can be effectively increased, the doping at the bottom of a groove is optimized, and by combining with a bottom auxiliary depletion layer, under the condition of the existing process capacity, the pressure resistance range of a super-junction MOSFET is further enlarged, and the application fields are extended.

The invention relates to a preparation method of a hydrogel composite device for measuring the ionizing radiation dose. The preparation method of the hydrogel composite device for measuring the ionizing radiation dose comprises the following steps: mixing acrylamide, an anionic monomer and a polycationic matrix with a photoinitiator in water to remove oxygen from a mixed solution, then polymerizing by ultraviolet irradiation, and irradiating for 1 to 30 min to obtain a prepolymer; placing a thermoluminescent dosemeter (TLD) on the surface of the prepolymer, and irradiating continuously with ultraviolet light to completely polymerize the prepolymer, thus forming the hydrogel composite device for measuring the ionizing radiation dose. The invention further requires to protect the hydrogel composite device for measuring the ionizing radiation dose prepared by the preparation method. The method disclosed by the invention closely combines hydrogel with excellent mechanical properties and adhesion properties with the TLD, so that the device can be closely adhered to the surface of skin to accurately measure the ionizing radiation dose.

The invention relates to a calamine cellulose fiber, which is characterized in that the formed calamine cellulose fiber is obtained through the following processes: preparing calamine slurry, preparing a spinning solution, preparing a denatured spinning solution and spinning; the weight percentage of the calamine in the finished product calamine cellulose fiber is 5% to 25%; the yarn is dissolved by adopting ionic liquid so as to increase the dissolubility of the yarn and enhance the production efficiency; a large amount of hydrogen sulfide and carbon disulfide can be avoided from generating in the yellowing process when the traditional viscose process is adopted; the environment pollution is reduced; the damage on the health of operation personnel is lightened; the ionic liquid is adopted to serve as a coagulating bath solution so as to guarantee that the effective components in the calamine are not damaged; the functional index of the finished product fiber is enhanced; the wet-dry strength and the dry extension are obviously enhanced; and the bleaching process in the course of preparing the conventional spinning solution fiber in the postprocessing process is omitted so as to avoid the damage of bleaching substances on the calamine and antibiosis active substances in the calamine.

The invention discloses a high-ductility electrolytic copper foil surface reddening method which has the following technical points: cellulose ether is added into a coarsening electrolyte for coarsened layer treatment, and the pH values of a graying electrolyte for graying treatment and a passivating electrolyte for passivating treatment are respectively 10-15. The copper foil coarsened surface produced by the invention has fine and uniform crystal grains, thereby reducing the skin effect of the copper foil when the circuit board is made into a circuit, preventing rear side corrosion caused by excessive dissimilar metal coatings in the preparation process of the copper clad plate, maintaining the characteristic of high ductility of the high-ductility electrolytic copper foil, and being beneficial to enhancing the chemical affinity between the copper foil and substrate and improving the peel strength and oxidation resistance. The invention belongs to the technical field of electrolytic copper foils.

The invention relates to a calamine cellulose fiber, which is characterized in that the formed calamine cellulose fiber is obtained through the following processes: preparing calamine slurry, preparing a spinning solution, preparing a denatured spinning solution and spinning; the weight percentage of the calamine in the finished product calamine cellulose fiber is 5% to 25%; the yarn is dissolvedby adopting ionic liquid so as to increase the dissolubility of the yarn and enhance the production efficiency; a large amount of hydrogen sulfide and carbon disulfide can be avoided from generating in the yellowing process when the traditional viscose process is adopted; the environment pollution is reduced; the damage on the health of operation personnel is lightened; the ionic liquid is adopted to serve as a coagulating bath solution so as to guarantee that the effective components in the calamine are not damaged; the functional index of the finished product fiber is enhanced; the wet-dry strength and the dry extension are obviously enhanced; and the bleaching process in the course of preparing the conventional spinning solution fiber in the postprocessing process is omitted so as to avoid the damage of bleaching substances on the calamine and antibiosis active substances in the calamine.

The invention provides an ultrathin LED flexible display screen which comprises a display module and a drive control device, and the display module is connected with the drive control device through adata line. The display module sequentially comprises a supporting layer, a first energy absorption layer, a driving connection layer, a second energy absorption layer, an LED array layer, a thin filmpackaging layer, a third energy absorption layer, a light polarization layer, a fourth energy absorption layer and a panel protection layer from bottom to top. According to the flexible display screen, the energy absorption layers are arranged, so that the high-elasticity and high-extension energy absorption layers are arranged among all the layers, when the shape of the flexible display screen is changed according to requirements of a user, stress gathered on all the functional layers of the flexible display screen can be effectively released by means of the energy absorption layers, and therefore normal work of the flexible display screen is guaranteed.

The invention relates to an operating-table-side fastening unit (200) and to a device-side fastening unit (400) for fastening a device (10) for supporting a patient to be x-rayed to an operating table (100). The operating-table-side fastening unit (200) comprises a receptacle (204) for receiving a coupling element (402) of the device-side fastening unit (400). Furthermore, the operating-table-side fastening unit (200) comprises a bolt (206), which is preloaded in a locked position, in which the bolt prevents the coupling element (402) from being removed from the receptacle (204). By means of a locking mechanism (240), the bolt (206) is held in an unlocked position after actuation by means of an actuating element (214) until either the coupling element (402) has been removed from the receptacle (204) or the actuating element (214) has been actuated again. The device-side fastening unit (400) comprises a mounting unit (406) and an intermediate piece (404), which are rotatably fastened to each other such that a height adjustment is possible by orienting the intermediate piece (404) in relation to the mounting unit (406).

The invention relates to a method for preparing a welding wire made of nickel base alloy. The welding wire comprises the following components by mass percent: 0.4-0.45% of C, 1.0-1.5% of Mn, 0.15-1.2% of Si, less than or equal to 0.025% of P, less than or equal to 0.02% of S, 28-30% of Cr, 49-51% of Ni, less than or equal to 0.1% of Co, less than or equal to 0.1% of Mo, less than or equal to 0.1% of Ti, less than or equal to 0.1% of Al, 4.0-5.0% of W and the balance of Fe. The method for preparing the welding wire comprises the steps of smelting the alloy, remelting electro-slag, carrying out hot forging and cogging down, carrying out hot rolling and annealing, carrying out acid pickling, polishing, carrying out cold drawing and removing hydrogen, wherein a CaF2, Al2O3 or CaO slag system is adopted in the step of remelting the electro-slag. The thinner welding wire can be prepared by the method for preparing the welding wire made of the nickel base alloy, the performances of the welding wire meet the requirements, and the welding wire is high in yield.

The invention relates to a compression-resistant waterproof environment-friendly coating which is prepared from 20 to 40 parts of film-forming resin, 3 to 5 parts of 2, 4-toluene diisocyanate, 1 to 2 parts of ethylenediamine, 15 to 35 parts of pigment and filler, 2 to 4 parts of auxiliaries, 0.05 to 0.1 part of flexibilizer, 2 parts of graphene nanosheets, 8 to 12 parts of nano ceramic, 5 to 10 parts of hollow glass beads and 10 to 20 parts of deionized water, and discloses a preparation method of the compression-resistant waterproof environment-friendly coating. The invention has the following beneficial effects: the coating can realize heat insulation in a manner of reflecting sunlight, the reflectivity to sunlight is up to 90%, the hemispherical emissivity is 0.9, the ductility reaches 105%, and the coating has excellent waterproof performance, outstanding corrosion resistance, strong weatherability and chemical corrosion resistance. The coating can be used for heat insulation of chemical storage tanks, heat insulation of buildings, water resistance, explosion prevention of pipelines in winter and the like, and has the characteristics of strong adhesive force, good flexibility, long service life and the like.

The invention relates to a method for preparing a nickel base alloy welding wire. Alloy of the nickel base alloy welding wire comprises, by mass, 0.4%-0.45% of C, 1.0%-1.5% of Mn, 0.15%-1.2% of Si, 0.025% or less of P, 0.02% or less of S, 28%-30% of Cr, 49%-51% of Ni, 0.1% or less of Co, 0.1% or less of Mo, 0.1% or less of Ti, 0.1% or less of Al, 4.0%- 5% of W and the balance being Fe. The method for preparing the nickel base alloy welding wire includes the steps of alloy smelting, electroslag remelting, hot forging and blooming, hot rolling and annealing, acid pickling and coping, cold drawing and hydrogen withdrawing. A CaF2 slag system, an Al2O3 slag system and a CaO slag system are adopted in electroslag remelting. Through the method for preparing the nickel base alloy welding wire, the thin welding wire with the performance meeting requirements can be prepared, and the yield is high.

The invention discloses a scandium aluminum alloy conductor low-voltage rubber jacketed flexible cable for offshore wind power generation, which belongs to the field of wires and cables. The scandiumaluminum alloy conductor low-voltage rubber jacketed flexible cable comprises a cable core, a water-blocking wrapping tape and an outer sheath. The water-blocking wrapping tape is wrapped on the outerside of the cable core. The outer sheath is extruded on the outer side of the water-blocking wrapping tape. The cable core comprises three power wire cores, a plurality of supporting frames and a ground wire cores. The ground wire cores are arranged in the center of the interior of the cable core. The centers of the interiors of the ground wire cores are filled with a ground wire core conductor.The outer side of the ground wire core conductor is extruded with a ground wire core insulating sleeve. The outer sides of the ground wire cores are sleeved with supporting frames. The three power wire cores are arranged between the supporting frames respectively. Cable cores are effectively fixed and supported by adopting the spirally arranged supporting frames, so that the mutual extrusion deformation among the cable cores is avoided. The structural strength, the ductility, the tear resistance and the like of the cable core of the scandium aluminum alloy conductor low-voltage rubber jacketedflexible cable are effectively improved. The defect that a traditional cable is poor in bending performance is overcome. The scandium aluminum alloy conductor low-voltage rubber jacketed flexible cable is effectively suitable for a low-voltage cable and is convenient to popularize for a long period of time.

The invention discloses a bacteriostatic aluminum alloy for an automobile pipeline. The bacteriostatic aluminum alloy is prepared from chemical components including, by weight, 0.4%-0.5% of Si, 0.1%-0.25% of Fe, 0.15%-0.25% of Mn, 2.5%-4.5% of Mg, 0.1%-0.25% of Zn, 0.05%-0.1% of Sc, 0.45%-0.8% of Li, 0.01%-0.1% of Cu, 0.01%-0.1% of Cr and the balance Al and inevitable impurities. Multiple elementssuch as Sc, Li and the like are added on the basis of a traditional aluminum alloy, so that the aluminum alloy has the characteristics of corrosion resistance, high ductility and the like, surface treatment is performed on the aluminum alloy by the aid of a heat-insulating bacteriostatic powder coating, the coating is prepared from main components including silica powder and calcined shell powder, and thus the alloy has the very good heat-insulating effect; and meanwhile, nano titanium dioxide is added, so that the alloy has the good bacteriostatic effect, and the long-term bacteriostatic effect can be 60% or above.