3137results about How to "Improve the stability of use" patented technology

The invention discloses a flexible display device. The flexible display device comprises a flexible display screen and a folding mechanism. The folding mechanism comprises at least two supporting pieces and at least one connecting piece, each supporting piece is movably connected with the corresponding connecting piece, and each supporting piece can rotate and conduct translational movement relative to the corresponding connecting piece, so that when the two supporting faces of each two adjacent supporting pieces are in a folded state; each two supporting pieces can move on the contrary to enlarge the gap between each two supporting faces, therefore the bending radius of a bending part is increased, and the time that a crack and a bending mark are generated on the bending part after the bending part is bent for a long time is delayed; and further the service life of the bending part is prolonged, and the using stability of the flexible display screen is improved.

An earplug-type earphone is disclosed including: an earplug (10) for producing sound and an elastic support (30). The earplug (10) includes a front housing (200) and a rear housing (500) connected in that order. The elastic support (30) is positioned on an outer side of the rear housing (500). When the earplug (10) is inserted in the external auditory canal, the elastic support (30) is pressed and deformed and then applies resilience to the helix, by which the earplug can be stably positioned in the external auditory canal.

The invention supplies a wet dust precipitator, belongs a mechanical technology. It solved by the existing ESP stability is not satisfactory, the use of inconvenient questions. The wet precipitator, including an internal cavity for the shell, the shell with air inlet and outlet mouth, shell equipped with shelves, shelves will be separated shell into one body cavity and two body cavity with connection, the above inlet in the one body cavity and the above air outlet in the two body cavity, in the inlet with the exhaust fan and mist of spray, in the cavity of a top-down set several baffle boards, two adjacent Baffle board connected in a cavity on both sides and with a cavity on the other side of a gap, and the two adjacent Baffle boards not intersect. The wet precipitator has good filtration effect, use easy, high stability.

The invention provides a shape memory intrinsic type self-repairing material which is prepared from the following components: a crystal polyether or polyester diol monomer, a diisocyanate monomer, a monomer containing a dynamic covalent bond micromolecule chain extender, a rubber elastic body, a free radical polymeric ultraviolet light initiator, a multi-sulfydryl curing agent and conductive packing. If the shape memory intrinsic type self-repairing material is suffered from mechanical damage, a conductive path consisting of internal conductive packing is damaged, the resistance of the material is increased, under the action of external current, temperature rise can be resulted from the Joule heating effect of the material self, a reversible shape memory effect of the material can be excited, cracks of the material can be shrunk and closed, meanwhile after macroscopic cracking closure, the dynamic covalent bonds inside the material can recombine the material as molecular chains of a fracture surface are diffused with one another and subjected to reversible chemical reaction, at the moment, paths of the conductive packing in the material can be recovered, the resistance of the material can be reduced to an original level, the Joule heating effect can be eliminated, the temperature can be reduced to the room temperature, and the self-repairing process has the characteristics of reversibility and repeatability.

The invention relates to resin combination with high thermal conductivity and glass transition temperature used for a printed circuit board. According to the weight percentage, the resin combination comprises brominated epoxy resin occupying 20 percent to 70 percent, hardening agent occupying 1 percent to 10 percent, accelerating agent occupying 0.1 percent to 10 percent, inorganic powder occupying 0 percent to 20 percent, high heat conducting powder occupying 5 percent to 85 percent, and processing auxiliary agent occupying 0 percent to 10 percent. The resin combination has the advantages of high glass transition temperature and heat conducting performance, excellent thermal resistance and flame resistance, which can be applied to the heat conducting insulating layer of the printed circuit board after being made into a high heat conducting preimpregnated body through a containing and soaking way or into a high heat conducting coating through a coating way, thus the printed circuit board has high heat conducting performance, and the heat quantity generated by the operation of the electronic elements on the printed circuit board can be rapidly dissipated to enhance the service life and the stability of the electronic elements.

The invention relates to a resin composition with high thermal conductivity, no halogen and fire retardance, which is applied to a printed circuit board and used as a thermal-conduction insulating layer. The resin composition comprises 5 to 70 weight percent of phosphorus epoxy resin, 0 to 50 weight percent of epoxy resin with a plurality of functional groups or double functional groups, 1 to 20 weight percent of hardening agent, 0.01 to 10 weight percent of accelerant, 0 to 20 weight percent of inorganic powder, 5 to 85 weight percent of high thermal-conduction powder and 0 to 10 weight percent of processing additive; in addition to high thermal conductivity, excellent thermal resistance and fire retardance, the resin composition does not contain a halogenous fire retardant and does not generate toxic or corrosive gas in combustion and is an environment-friendly material; the resin composition can be prepared into a pre-impregnated body with high thermal conductivity through an impregnation method or prepared into a coating material with high thermal conductivity by a coating method; the pre-impregnated body or the coating material is applied as the thermal-conduction insulating layer of the printed circuit board so that the printed circuit board has high thermal conductivity and is favorable for rapidly dissipating heat generated in the operation of electronic components of the printed circuit board to prolong the life service and the stability of the electronic components.

A size optimization design method for an aircraft thermal protection system based on section reliability comprises the following steps: 1. mathematical modeling, according to the structural form of the thermal protection system, determining a size related design variable, and according to the temperature requirement, establishing a heat proof structure weight reduction optimization model; 2. describing the material, external load and uncertainty in an initial/boundary value condition by utilizing the section in a quantifying manner; 3. carrying out reliability switch on the temperature constraint condition containing an uncertain parameter based on a section possibility degree; 4. utilizing the section limited volume method, realizing quickly solving of the structure transient temperature response range, and changing a two-layer nesting optimization problem into a conventional single-layer optimization problem; 5. carrying out programming calculation on switched single-layer optimization problem containing the reliability restraint, and determining an optimal solution to reaching an optimal weight reduction effect. The invention can systematically solve the thermal protection system structure optimization problem containing multisource section uncertainty, improves the computational efficiency, and ensures the reliability and the safety of the structure use.

The invention discloses a method for synthesizing a ZIF-8 aerogel on the basis of a cellulose hard template. The method is based on a cellulose hard template and comprises the following steps: reacting 2-methylimidazole and zinc nitrate to form ZIF-8 carried on the cellulose surface, carrying out solvent washing and repeated carrying so that the ZIF-8 crystal grains uniformly grow on the cellulose surface, and finally, carrying out exchange, freeze-drying and the like to keep the aerogel structure. The ZIF-8 aerogel has larger specific area, and has certain promoting actions on researching application of metal organic frame materials in the field of gas storage. The method has the advantages of simple technique and favorable repetitiveness, uses cheap and accessible industrial raw materials, conforms to the requirements for environmental protection, and can implement mass production.

The invention discloses a multifunctional soil detection device for environmental detection. The soil detection device comprises a mounting vehicle plate, pushing handlebars are fixedly connected to the two sides of one end of the mounting vehicle plate correspondingly, and a storage battery is fixedly connected to one end of the top of the mounting vehicle plate. Mounting vertical rods are symmetrically and fixedly connected to the middle of the other end of the top of the mounting vehicle plate, a mounting vertical groove is formed in the middle of one side of the mounting vertical rod, andmounting bolts are movably connected to the inner sides of the mounting vertical grooves. According to the present invention, an extrusion block is extruded out of a drill bit through an extrusion airpipe, further the soil at the bottom layer of a sampling inner pipe is cut off, meanwhile, the compaction degree of soil at the bottom of the sampling inner pipe can be further improved under the extrusion action of the extrusion block, and the soil in the sampling inner pipe is intercepted when the sampling mechanism is lifted from the soil layer, so that the phenomenon that a soil sample in thesampling inner pipe slides down when the sampling mechanism is lifted is avoided, the phenomenon that the soil sample is mixed is effectively prevented, and the detection accuracy of the soil sampleis further improved.

The invention discloses a white light LED (Light Emitting Diode) capable of lighting by triggering carbon points through blue light, and a preparation method thereof. The white light LED comprises an insulating base, a bowl-shaped reflection mirror, a blue light LED chip and a lens, wherein the bowl-shaped reflection mirror is arranged on the insulating base; a heat conduction sheet is arranged between the bowl-shaped reflection mirror and the insulating base; the blue light LED chip is fixed in the bowl-shaped reflection mirror; the silane functionalized carbon points are covered on the blue light LED chip; the lens is arranged outside the silicon bowl-shaped reflection mirror; a transparent sealing material is filled into the lens; organic multielement acid is fed into silane liquid which is boiled and flows back under the protection of nitrogen, so that the organic multielement acid is subjected to pyrolysis so as to synthesize the silane functionalized carbon points; the blue LED chip is fixed inside the bowl-shaped reflection mirror; the silane functionalized carbon points are coated on the blue LED chip and are cured; the lens is arranged outside the bowl-shaped reflection mirror; and the lens is filled with the transparent sealing material. The white light LED and the preparation method can be beneficial for improving the light emission efficiency, and the use stability and prolonging the service life of an LED.

The invention discloses a high-efficiency connection locking device of a building mechanical power line. The connection locking device comprises a device shell, wherein a cable insertion channel is arranged in the device shell, a socket is arranged on the bottom wall of the device shell and is arranged at the bottom of the cable insertion channel, a concave cavity and a prop-against cavity are arranged in the side wall of the device shell, a control press hole is formed in the bottom wall of the device shell, a driving channel is arranged between the concave cavity and the control press hole, a through groove is formed between the concave cavity and the cable insertion channel, a prop-against plate is arranged in the through hole, a V-shaped control sheet is arranged in the concave cavity, a press post is arranged in the press hole, a raising rod is arranged in the driving channel, an isosceles trapezoid press block is arranged in a buffer cavity, a reset pull hole is further formed, a rest pull rod is arranged in the reset pull hole, and a sliding prevention press block is arranged in the prop-against cavity. The connection locking device is simple in structure and is convenient to operate, cable connection locking can be effectively and rapidly achieved, a cable plug can be effectively from being loosening with the socket, and the application stability and the application reliability are greatly improved.

The invention relates to a preparing method of a rare earth catalytic cracking double-metal deactivator. The method includes steps of: A) mixing 300-600 kg of a mother liquor A, 50-150 kg of a mother liquor B and 5-20 kg of a pH conditioner and stirring; and B) adding 30-80 kg of deionized water, stirring for 30-60 min and discharging. The catalytic cracking double-metal deactivator with wide suitability is developed, thus effectively solving a suitability problem of deactivators.

The invention belongs to the field of coatings and particularly relates to an odorless and wear-resisting smooth UV (ultraviolet) matt finish paint coating and a preparation method thereof. The odorless and wear-resisting smooth UV matt finish paint coating comprises components in percentage by weight as follows: 25%-50% of hexa-functional polyurethane acrylate prepolymers, 15%-50% of trifunctional modified polyurethane acrylate prepolymers, 15%-50% of acrylate monomers, 1%-10% of a photoinitiator, 0.2%-2% of a wetting dispersant, 0.2%-1% of a leveling agent, 0.2%-0.5% of a defoaming agent and 1%-15% of a matting agent. According to the odorless and wear-resisting smooth UV matt finish paint coating, the technical problems that a pungent smell is left, wetting of the matting agent is difficult, matting is difficult, a paint film is prone to floating and the like after curing of a conventional UV matt finish paint coating are solved, and meanwhile, the defect of crispness of the paint film caused by improvement of the wear resistance of the conventional UV matt finish paint coating is overcome.

A lead-free Sn-Cu-Cr solder is proportionally prepared from Cu, Cr, alloy of one or more of Ga, Bi, In, Ni, P, Ge, Ag, Al, Sb, Zn and RE, and Sn through smelting in vacuum or protecting atmosphere to preparing intermediate alloys Sn-Cu, Sn-Cr and Sn-Ag, and proportional smelting.

The invention discloses a novel medical pH electrode catheter, which includes a catheter, an impedance ring and a wire. The catheter is a hollow tube body, and the wire is arranged in the tube body. position, a lead hole is opened at the preset position where the impedance ring is installed, and the impedance ring abuts against the wire drawn out of the lead hole. In application, first all the wires are inserted into the conduit, and a single wire is taken out from the corresponding installation space of the impedance ring, the wire is wound on the conduit, and then penetrated into the impedance ring, and the impedance ring is fixed at the wire position, and finally the necking process is used The impedance ring is closed and positioned to complete the assembly of the entire pH electrode catheter. Compared with the joint-by-joint connection method used in the prior art, the present invention adopts the integrated assembly of the catheter and the impedance ring, which completely solves the problem of water leakage, and at the same time enhances the stability and quality of the pH electrode catheter, and has better clinical use effect.

The invention relates to the technical field of wastewater treatment, and particularly discloses a technology for treating organic wastewater through catalytic wet ozone oxidation. The technology comprises steps as follows: the organic wastewater and ozone enter a reactor for a reaction, and the reactor is sequentially filled with a catalyst A and a catalyst B according to the contact sequence with the organic wastewater. The technology is simple and good in stability, not only is COD removing capacity high, but also effective utilization rate of ozone can be increased and adding amount of ozone can be reduced.

The invention relates to an intelligent production line for high-speed aluminum bar saw cutting. The intelligent production line comprises a machine body and an operation table used for controlling the machine body to run; the machine body comprises a feeding device used for conveying aluminum bars, a feeding sizing device used in cooperation with the feeding device, a main machine saw cutting device used in cooperation with the feeding sizing device and a discharging device used for discharging after saw cutting is completed. According to the intelligent production line for high-speed aluminum bar saw cutting, monomer project research and development and system organic sets of series functions including batch automatic feeding, numerical control sizing, saw cutting clamping, finished product numerical control stacking, weighing, coding and the like of workpieces are studied, overall process numerical control problems (controllable beat) of a series of motions such as feeding, positioning, clamping, hoisting, weighing and coding are solved, and the production line is worthy of popularization.

The invention relates to a radiating silica gel material, in particular to a low-cost radiating silica gel sheet and a preparation method thereof. The radiating silica gel sheet consists of the following components in part by weight: 100 parts of vinyl silicone oil, 3 to 8 parts of methyl silicone oil, 7 to 15 parts of hydrogen-containing silicone oil, 0.5 to 1.2 parts of catalyst, 2 to 5 parts of silane coupling agent, 3 to 8 parts of gaseous phase silicon dioxide, 500 to 800 parts of zinc oxide and 40 to 100 parts of aluminum oxide. The low-cost radiating silica gel sheet prepared from the raw materials is mainly used between heating devices and radiating devices to fill gaps of radiators in electronic industry, so that the service life of the radiators is prolonged, and the stability is improved; and the radiating silica gel sheet can be used at the temperature of between -50 and 200 DEG C for a long time, and the cost of radiating materials is reduced due to the addition of the zinc oxide.

The invention relates to a composite carbon fiber-loaded metal catalyst as well as a preparation method and application thereof. The composite carbon fiber-loaded metal catalyst is high in graphitization degree, good in catalyst metal particle dispersion performance and excellent in catalytic performance and is prepared by adopting a transitional metal oxide as a graphitization enhancer of a carbon material and a metal dispersion loading induction agent. The prepared composite carbon fiber material loaded with the transitional metal oxide is catalyzed through the transitional metal oxide under the high temperature condition to obtain a carbon material with a high graphitization degree, and the transitional metal oxide composite carbon fiber material is used as a catalyst carrier to be reduced by a reduction agent. The catalyst is high in initial electrochemical activity surface area and good in duration, and after the catalyst is cycled for 4500 times, the electrochemical active surface area sill can be maintained at 54 percent. The current density attenuation is reduced in a timing current-method electrochemical test of 120 minutes, the electrochemical activity is high, the current density is high, and the duration is excellent.