1437results about How to "Guaranteed mechanical strength" patented technology

The invention provides a supporting piece for foldable terminal device and the foldable terminal device, relates to the technical field of terminal device. The supporting piece and the device and canimprove the surface flatness of the terminal device on the premise that the bending activity of the terminal device is not limited. The terminal device comprises a flexible display screen and a supporting piece arranged on one side of the flexible display screen. The supporting piece comprises at least one bendable area, a plurality of gaps are formed in at least one bendable area. Each gap is provided with at least one opening, and the orientation of at least one opening in each gap is the same as the bending direction of the bendable area where the gap is located. When the bendable area of the supporting piece is bent, the gap can absorb stress generated in the bending process, the bending movement of the terminal device cannot be limited, the supporting piece can provide a supporting effect for the flexible display screen, and the surface flatness of the terminal device is improved. The terminal device provided by the invention can be folded, and has the functions of providing large-size display, being convenient to carry and the like.

The invention provides super macroporous polymer microspheres and a preparation method thereof. The preparation method comprises the following steps of: firstly, preparing an oil-in-water in-water composite emulsion as a template for super macroporous microspheres through a two-step emulsion process; then, solidifying an oil phase by using a solvent removal method to form super macroporous microspheres provided with inner-outer through pore passages; and finally, after molding the microspheres, further crosslinking microsphere skeleton molecules to obtain microspheres with rigid resin structures. The microspheres prepared by the method have a through pore passage structure, the controllable particle size range is 0.1-300 microns, the controllable pore size range is 0.09-90 microns, and the controllable porosity range is 10-90%. Super macroporous structures are beneficial for biological macromolecules to penetrate through and enter the microspheres, the mass transfer by convection in the microspheres can be realized, and the rigid structure can tolerate higher pressure and higher flow velocity. The super macroporous polymer microspheres can be used as stationary phase fillers for chromatographic separation, immobilized carriers of enzymes, cell culture micro-carriers, tissue engineering micro scaffold materials, adsorbing materials and the like.

A high-dispersity carried Ni-base catalyst for reforming, oxidizing, or oxidizing-reforming methane in fluidized bed is prepared by direct dipping to make the Ni ions be carried by microspherical silica gel or alumina. Its advantages are high activity and high stability.

The invention relates to a corrosion process of aluminum foil used in an electrolytic capacitor, which includes six steps: pre-treatment, exchange of pre-corrosion, intermediate processing, post-level AC corrosion, DC corrosion, and after treatment, is characterized in that ultrasound-assisted corrosion is used in the post-level AC corrosion; at the same time, the invention divides the post-level AC corrosion into a plurality of levels, the temperatures are gradually reduced from the first level to the end, but the current densities are increased gradually. The craft of the invention keeps that the etching solution is transferred smoothly in a tank, effectively prevents concentration polarization at the interface of aluminum foil-etching solution, promotes the removing of the corrosion sediments, and greatly enhances the corrosion efficiency.

The invention belongs to the field of lithium sulfur battery material, and in particular, relates to a lithium sulfur battery positive electrode material including a host material and elemental sulfurloaded on the host material; the host material includes carbon nanotubes and a transition metal sulfide compounded on the carbon nanotubes. The invention also discloses a preparation method and an application of the positive electrode material. According to the lithium sulfur battery positive electrode material, a strategy of adding the transition metal sulfide is adopted for reducing a back-and-forth shuttling effect; secondly, the carbon nanotubes are added to prevent the collapse of an electrode structure; the positive electrode material has excellent electrochemical performance, and is applied to a lithium sulfur battery to show high initial discharge capacity, high coulombic efficiency and high rate performance.

The invention discloses a micro-embedded self-lubricating texture on the surfaces of a gear and a cam and a preparation method thereof. The preparation method comprises the following steps of: performing micro texture processing on the surfaces of the gear and the cam by an Nd: YAG laser processing technology; and embedding a solid lubricant into the micro texture on the surfaces of the gear and the cam by a molding bonding technology of a self-lubricating composite material. The self-lubricating composite material comprises the following formula components in percentage by mass: 15 to 85 percent of polyimide (PI), 0 to 85 percent of polytetrafluoroethylene (PTFE), 10 to 40 percent of MoS2, 0 to 15 percent of WS2, 0 to 16 percent of graphite fluoride, 5 to 15 percent of graphite, 0 to 12 percent of PbO, 0 to 6 percent of antimony trioxide, 0 to 10 percent of CaF2 or BaF2, 0 to 15 percent of hexagonal boron nitride, 0 to 15 percent of nano lubricant and 0 to 5 percent of additive. According to the micro-embedded self-lubricating texture, the self-lubricating texture is subjected to micro embedding on the surfaces of the gear and the cam to ensure that the solid lubricant on the friction surface is stably supplied and uniformly coated, so that the lubrication and anti-wear properties of friction pairs such as the gear and the cam under complicated and harsh operating conditions are improved.

The invention discloses a porous metal cervical interbody fusion cage for directionally and slowly releasing rhBMP. The cervical interbody fusion cage is manufactured through the following process that firstly, a base body of the porous metal cervical interbody fusion cage is manufactured through the 3D printing technology; then a slow release system carrying rhBMP is injected into the porous metal cervical interbody fusion cage, cooling and drying are conducted, and then the porous metal cervical interbody fusion cage can be obtained. The manufactured cervical interbody fusion cage has the elasticity modulus similar to that of a natural bone, and can directionally and slowly release rhBMP, long-term and stable bone tissue ingrowth induction is achieved accordingly, the combination problem of a bone-material interface is solved, and osseointegration capacity is improved.

The invention relates to heat-resistant high-temperature vulcanized silicone rubber. The heat-resistant high-temperature vulcanized silicone rubber is prepared from, by weight, 100 parts of crude rubber, 10-100 parts of a reinforcing filler, 1-100 parts of a nano-scale heat-resistant filler, 1-100 parts of a micron-scale heat-resistant filler, 0.5-20 parts of a small-molecular heat-resistant agent, 3-15 parts of a structurized control agent, 1-10 parts of a surface-treated agent, 0.1-10 parts of a heat-resistant surface-treated agent and 0.1-10 parts of an internal deformable auxiliary. The heat-resistant high-temperature vulcanized silicone rubber is suitable for multiple product molding processes of mold pressing, extruding, injecting and the like, and high-temperature working devices of various shapes can be molded; the product is good in heat-resistant effect after vulcanization, hardness can be adjusted by synchronous adjustment of formulas and processes, use of different environments is met, good mechanical performance in long-time high-temperature environment can be sustained, working environment is protected, and stable operation of equipment is maintained.

The invention relates to a low-temperature halogen-free lead-free solder paste. The solder paste is mixed by Sn-Ag-Bi-based lead-free solder powder added with P or rare earth elements and a rosin-based soldering flux. The soldering flux is basically composed of, by weight, 30-45% of rosin resin, 2-10% of an organic acid activator, 3-5% of a thixotropic agent, 2-5% of a corrosion inhibitor, 3-5% of a surfactant and the balance solvents. The solder paste has the advantages that the welding temperature is low, slag is reduced, and the solder paste is suitable for manual welding and printing welding with poor thermal shock resistance.

The invention discloses a strain aging method for improving the mechanical properties of aluminum alloy. The strain aging method comprises the following steps: the aluminum alloy is subjected to the solution treatment for 20-60 min at 520-560 DEG C; the aluminum alloy material after the solution treatment is water-cooled and quenched to room temperature; the aluminum alloy is subjected to the pre-aging treatment for 10-30 min at 150-180 DEG C so that the aluminum alloy material is in an underaged state; the aluminum alloy material after the pre-aging treatment is immersed in liquid nitrogen for 20-30 min and then is subjected to the multi-pass low-temperature rolling; finally, the rolled aluminum alloy material is subjected to the low-temperature reaging treatment for 85-100 hours at 100-130 DEG C so as to further strengthen the aluminum alloy. According to the invention, the strain aging method effectively improves the tensile strength and yield strength of aluminum alloy, is simple in process, easy to operate and low in cost, and has good generalizability.

The invention provides a backlight module. The backlight module comprises a back plate, a light guide plate arranged in the back plate, and a plurality of elastic bodies mounted on the back plate, wherein the back plate includes a bottom plate, and a plurality of side plates vertically connected at the periphery of the bottom plate; the light guide plate includes a bottom surface facing the bottom plate, a top surface away from the bottom plate, and a plurality of side surfaces connected between the bottom surface and the top surface; the plurality of elastic bodies are respectively mounted on the three side plates of the back plate, and butt against the three side surfaces of the light guide plate; and the contact surface between the elastic bodies and the side surfaces of the light guide plate is an arc-shaped surface or a spherical surface. The backlight module provided by the invention can ensure the mechanical strength of the light guide plate by fixing the light guide plate in the back plate through the elastic bodies between the side plates of the back plate and the light guide plate without processing the periphery of the light guide plate by grooving, embossing and so on, and can supply a certain buffer space to prevent extrusion deformation of the light guide plate due to thermal expansion in the prior art, thereby ensuring the luminous intensity and uniformity and reducing the cost.

The invention provides a ceramic electronic component having the low dielectric constant of a ceramic sintered body and excellent impedance properties in a GHz zone and capable of obtaining high impedance properties in a wide frequency range, and its manufacturing method. This ceramic electronic component is formed by forming a green compact which includes an electrode therein with a ceramic compound comprising a ceramic raw material, a binder and a spherical or granular combustible material having adhesiveness to the binder. The green compact is fired to form the ceramic sintered compact including the electrode and containing about 35 to 80 volume percent pores. The pores of the ceramic sintered compact are filled with resin or glass.

The invention discloses a fingerprint detection method and an electronic device. The fingerprint detection method comprises the following steps: obtaining a control instruction for indicating to collect fingerprints; executing the control instruction and controlling at least one display pixel unit corresponding to a fingerprint acquisition area in a display screen to be in a fingerprint identification mode, wherein the fingerprint acquisition area is a partial region in the display screen; and sensing fingerprint information of fingers in the fingerprint acquisition area through the at least one display pixel unit in the fingerprint identification mode. According to the technical scheme, the at least one display pixel unit corresponding to the fingerprint acquisition area in the display screen is reused to carry out fingerprint identification, and the fingerprint information of the fingers in the fingerprint acquisition area is sensed through the at least one display pixel unit in the fingerprint identification mode, so that the display screen no longer needs to be bored to install a fingerprint identification module additionally, mechanical strength of the display screen is ensured, production process is simple and production cost is low.

The invention relates to an environmental-friendly recyclable basalt fiber and jute fiber composite plate for automotive interiors and a production method thereof. The environmental-friendly recyclable basalt fiber and jute fiber composite plate is produced by manufacturing a felt by combining a surface layer with a core layer and then carrying out hot-press forming. The core layer is manufactured by lapping and needling two natural fibers, i.e. basalt fibers and jute fibers, and mixtures of two chemical fibers, i.e. polyster fibers and polypropylene fibers; and the core layer comprises the following components in percentage by weight: 10%-30% of the basalt fibers, 10%-30% of the jute fibers, 20%-30% of the polyster fibers and 30%-40% of the polypropylene fibers. The invention has the advantages of low density, light weight, low cost, high strength, good toughness, large deformation, high safety, environment friendliness, recyclability, and the like.

The method of repairing plate part of automobile includes setting sucking disc in the notched part, pumping out air from the sucking disc, drawing the sucking disc to draw out the notched part and knocking to restore the original shape. Compared with available repairing method, the method of the present invention has the advantages of no need of welding, less deformation and damage of the plate part and simple operation.

The invention relates to a micro-nano fiber bragg grating refractive index sensor and a manufacturing method thereof, comprising an organic glass plate which is fixedly connected with two ends of the fiber bragg grating. The middle section of the fiber bragg grating is a clad-free fiber core gate area. The manufacturing method of the micro-nano fiber bragg grating refractive index sensor comprises the steps of 1) fixing two ends of a common fiber bragg grating on an organic glass, putting the organic glass in a temperature-regulated oven, and controlling the temperature at a constant temperature between 17 DEG C and 25 DEG C; 2) dropwise adding 0.8 mL-1.2 mL hydrofluoric acid on the gate area clad of the fiber bragg grating of the step 1), etching for 125-80 minutes, etching off the gate region clad to make the gate area fiber core of the fiber exposed directly; and 3) taking the etched fiber bragg grating of the step 2) together with the organic glass out from the oven, sucking residue etching liquid, cleaning the etched fiber bragg grating, coating a 40% NaOH solution on the etched fiber bragg grating, immersing for 10 minutes to ensure that the residue hydrofluoric acid is neutralized completely, and finally washing the fiber bragg grating with deionized water. The micro-nano fiber bragg grating refractive index sensor has the characteristics of simple structure, accurate measurement and high signal-to-noise ratio.

The invention relates to a high-refractive-index organosilicon material for light-emitting diode (LED) packaging and a preparation method of the high-refractive-index organosilicon material. The technical scheme includes that according to a formula ration, three materials of a phenyl vinyl silicone resin, a phenyl hydrogen silicone resin and nano silicon dioxide (particle size distribution 5-15nm) which is treated by a silane coupling agent are placed in a 2L internal mixer to be internally mixed for one hour, then a platinum catalyst with a platinum content of 200-1000ppm is added to a nitrogen atmosphere, internal mixing is performed for 10 minutes again, finally, an alkynol compound is added, and internal mixing is continuously performed for 10 minutes to obtain the high-refractive-index organosilicon material. Compared with existing high-refractive-index organosilicon materials for LED packaging, the high-refractive-index organosilicon material for LED packaging is higher in drawing strength and larger in cohesive force under the condition of the same refractive index and light transmittance.

The invention relates to a preparation method of a honeycomb ceramic net through Lu and N co-doped TiO2 photocatalysis. The honeycomb ceramic net is regarded as a first carrier, and activity AL2O3 coating with specific surface area of 300 to 400m2/g and doping with lanthanum, cerium and iron element is loaded on the first carrier and regarded as a second carrier; the mass ratio of AL2O3 to La to Ce to Fe is (100 to 110) to (90 to 115) to (50 to 70) to (5 to 15); the TiO2 photocatalyst films of rare earth element Lu and non-metallic element N are loaded on the second carrier; the mass ratio of Lu to N to TiO2 in the TiO2 photocatalyst film is (0.01 to 0.16) to (0.40 to 1.88) to (97.94 to 99.54). The removal rate of the honeycomb ceramic net prepared through photocatalysis to formaldehyde and toluene in the air is 98.7% and 92.2% respectively, and the removal rate to formaldehyde and toluene in the air is improved by 2.0 times and 1.9 time respectively compared with the application of the TiO2 photocatalyst film only.