41results about How to "Solve the problem of high temperature resistance" patented technology

The invention relates to a preparation method for a flexible and transparent composite ionic liquid gel conductive electrode. In the composite ionic liquid gel conductive electrode disclosed by the invention, a polymer monomer and an ionic liquid monomer form a flexible and transparent polymer network framework, and the conductivity of the composite ionic liquid gel conductive electrode is improved by introducing a conductive nano material. The invention also discloses a preparation method of the composite ionic liquid gel for the flexible and transparent electrode. In the flexible and transparent composite ionic liquid gel conductive electrode provided by the invention, a flexible and transparent substrate is not required to beintroduced, the mechanical property is excellent, and the defects of poor adhesiveness, poor chemical stability of the substrate and low temperature resistance caused by poor matching of the substrate and a conductive thin film in the traditional flexible and transparent electrode technology are overcome; the preparation method has the characteristics of simplicity in process, low cost and long-term stability; and moreover, the resistance of the composite ionic liquid gel can be adjusted, and thus, the transparent electrode is particularly suitable for fabrication of a wearable electronic device, a flexible display screen, a solar cell, a thin film transistor and an organic electroluminescence (EL) panel.

The invention provides an oil-resistant silicon rubber composition. The composition comprises the following components in parts by weight: (a) crude methylvinyl silicon rubber including 71+/-2 parts of methylvinyl silicon rubber containing 0.07-0.09 percent of vinyl and 29+/-2 parts of methylvinyl silicon rubber containing 0.15-0.17 percent of vinyl, wherein the number average molecular weights of the two types of rubber are 580,000-620,000, (b) 2.2+/-0.5 parts of hydroxyl silicon oil, (c) 1.4+/-0.2 parts of hydrogen-containing silicon oil and (d) an oil-resistant component including 42+/-10 parts of white carbon black which is precipitated white carbon black, 1.1+/-0.2 parts of dimethyl silicon oil of which the polymerization degree is between 150 and 300, 9+/-2 parts of pot clay of 3000+/-500 meshes, and 5+/-0.5 parts of polytetrafluoroethylene, wherein the total weight of the components (a), (b), (c) and (d) accounts for 90-100 percent of the total weight of the composition. The invention further provides oil-resistant silicon rubber and a preparation method and an application thereof.

A high-temp. resistant capsule features that its capsule core contains at least one functional substance A and a volatile substance B which can dissolve capsule core but is insoluble in dispersing medium. The substance A is chosen from paraffin wax, chlorinated paraffin wax, high-grade emtrol and fatty acids, epoxy resin, perfume or essence and coloring agent. The substance B contains at least one hydrophobic substance whose boiling point is between ordinary temp. and 150 deg.C. Its preparing process features heat treatment of conventional capsule, that is, baking at 70-90 deg.C to constant weight and heat treating at 130-190 deg.C for 30-150 min. Its advantages are high resistance to high temp. up to 290 deg.C and low cost.

The invention discloses an expandable biopolymer temporary plug profile control agent and a preparation method thereof. The expandable biopolymer temporary plug profile control agent is mainly prepared from biodegradation polymer, a reinforcing agent, a toughening agent, a foaming agent, a crosslinking agent, a water blocking agent, a coupling agent, a functional auxiliary and a carrying agent, and can be prepared through a double-screw extruder mixing method and a mixer mixing method under certain process conditions. The prepared expandable biopolymer temporary plug profile control agent is low in carbon, environmentally friendly, expandable, resistant to high temperature, high in plugging ratio, large in plugging strength, capable of achieving the self-plug-removal function, free of toxicity and pollution to stratums, low in cost and convenient to construct, and has very high economic value and broad market prospects.

The invention relates to a preparation method of a p-aramid fiber-mica paper. The preparation method comprises defibering and dispersing silane coupling agent-modified p-aramid chopped fibers to obtain slurry A, carrying out screening on the p-aramid fibrids with a beating degree of 40-65 degrees SR to obtain slurry B, modifying mica plates through an ionic starch solution to obtain modified mica plates, mixing the slurry A, the slurry B and the modified mica plates to obtain uniform mixed slurry, wherein the uniform mixed slurry comprises, by mass, 10-20% of p-aramid chopped fibers, 20-40% of the p-aramid fibrids and 40-70% of the mica plates, carrying out sizing, dehydration and formation on the mixed slurry, carrying out squeezing and drying and carrying out hot press molding to obtain the p-aramid fiber-mica paper. The p-aramid fiber-mica paper obtained through fiber screening and modification, wet method paper making and hot pressing molding has good evenness, excellent mechanical strength, excellent dielectric breakdown strength and high temperature resistance stability.

The invention discloses a method for manufacturing a ceramic-based flexible circuit board, which is characterized by comprising the following steps of: A. manufacturing an aluminum nitride ceramic circuit board; B. manufacturing a flexible circuit board; C. laminating the aluminum nitride ceramic circuit board and the flexible circuit board; D. manufacturing a through hole passing through the upper surface and the lower surface of the multilayer board on the multilayer board obtained in the step C by adopting laser drilling equipment, processing the hole with a conducting material and then drying to obtain a through hole; E. printing solder resist ink in the positions on the multilayer board, at which electronic elements do not need to be welded; F. silk printing characters at preset positions on the multilayer board; and G. cutting the circuit board into predetermined specifications by adopting laser cutting equipment to obtain the ceramic-based rigid flexible multilayer circuit board. The invention aims to overcome the defects in the prior art and provide the manufacturing method of the ceramic-based flexible circuit board with simple process, good 3D connection performance and good thermal conductivity.

The invention is a flexible fireproof cable and its producing process as well as its producing equipment. It uniformly distributes a group of metal wire cores, which are mutually isolated and coated in the vertical direction by mica tape insulating layer and then coats a metal tape outside, the metal tape is folded annularly and closed vertically by a welding line, thus composing the flexible fireproof cable. If it needs a better bending property, it can roll lines on a smooth metal protective cover. Its producing equipment is composed mainly of a twisted wire winder, a cable winder and a metal protective cover coat-welding machine connected in series in sequence. It solves the problems of high temperature resistance, safety and environmental protection as well as process complexity, cable hardness, cable length, and insulating resistance. It can not fire, burn and produce smoke frog and harmful substances even if the surrounding substances have been firing and burning, so it is a permanent fireproof safe environmental protection cable.

The invention discloses a preparation method of an N-doped polysilicon ingot. The preparation method comprises the following steps of: putting polysilicon and silicon nitride nanopowder with the grain size of 1 to 100nm in a quartz crucible and charging, vacuumizing a furnace room and heating to 1420 to 1550 DEG C, and preserving the temperature till mixture is fused completely; gradually reducing the cooling speed in 1 to 10 DEG C/min in a furnace till reaching 1350 to 1420 DEG C; then naturally cooling the temperature in the furnace room to the room temperature; taking the silicon ingot out and crushing into small pieces to obtain master alloy silicon blocks; putting mixture of the master alloy silicon blocks, the polysilicon material and electrical activity dopants in the quartz crucible, vacuumizing the furnace room and heating to 1420 to 1550 DEG C to obtain a fused silicon material mixture; and enabling the fused silicon material mixture to solidify to obtain the polysilicon ingot. According to the preparation method of the N-doped polysilicon, the invention can carry out N-doping by adopting conventional devices and has even N-doping, high N-doping concentration, simple entire process and low cost. In addition, the invention also discloses a preparation method of an N-doped monocrystalline silicon ingot.

The invention relates to a pin-type load-bearing/protection integrated high-strength polyethylene composite armored bulkhead structure which is composed of a sandwich plate and a hat-shaped reinforcing rib. The sandwich plate is composed of a front panel, a cushioning insulation layer, a high-strength polyethylene fiber ballistic layer, an energy-absorbing insulation layer, a back panel and a restriction fiber nail. The front panel and the rear panel are arranged on both sides of the sandwich plate to provide the required rigidity and strength of the structure and a certain high-speed fragmentpenetration resistance; the buffer insulation layer and the energy absorbing heat insulation layer are located between the panel and the high-strength polyethylene fiber anti-ballistic layer, and areused for protecting the high-strength polyethylene fiber ballistic layer from the influence of high temperature. The high-strength polyethylene fiber ballistic resistant layer is used for resisting the penetration of high-speed fragments. the restraining fiber nail is used for penetrating the sandwich plate, improving the interlayer strength of the sandwich plate, reducing the interlayer failureof the weak interface, so that the sandwich plate can give full play to the anti-penetration performance so as to more effectively resist the penetration of the high-speed fragments; the hat-shaped reinforcing rib is used for improving the strength and rigidity of the bulkhead structure.

The invention discloses a hose lining material for an ultrahigh-pressure wire-wound hydraulic hose and a preparation method of the hose lining material. The hose lining material is prepared from raw materials in parts by weight as follows: 50-70 parts of nitrile butadiene rubber, 30-50 parts of a rubber and plastic alloy, 6-7 parts of an active agent, 3 parts of an anti-aging agent, 6 parts of a plasticizer, 80-85 parts of carbon black 774 and 3.5-3.7 parts of a vulcanization accelerator, and the material is prepared through primary smelting, mixing, extrusion and vulcanization procedures. The problems of failure in high temperature resistance, forming of pinholes and oil leakage of high-pressure wire-wound hydraulic hoses are solved, and the use requirements of high-pressure and high-pulse wire-wound hydraulic hoses are met.

The invention discloses a boundary layer effect channel propulsion engine for equipment, aiming to provide a motor capable of outputting high torque to replace current equipment vehicles, tanks, helicopters, ships and steam turbines, and mainly to realize equipment for fighter jets and missiles. scramjet engine. Its technical points are as follows: it includes a scramjet engine for equipped fighters and missiles consisting of a gas-propelled boundary layer effect channel rotor engine, a ramjet engine, and an air intake shroud. The described boundary layer effect channel rotor engine includes a boundary layer effect channel The rotor turbine is composed of multiple vortex-helical elongated channels and vortex-helical multi-layer superimposition. The rotor turbine is equipped with multiple superconducting heat pipes to cool and dissipate the turbine. The flame holder flame tube of the combustion chamber is distributed with multiple inclined inlets. The air channel constitutes the vortex flow combustion, and the ramjet engine includes a boundary layer effect channel rotor engine connected to drive a turbofan compressor, an inner and outer bypass, a combustion chamber, and the like.

The invention discloses dust removal equipment for spraying plastic products. The dust removal equipment comprises a workbench and a cleaning box, wherein the cleaning box is arranged at the right endof the interior of the workbench, the cleaning box is fixedly connected to the right end of the lower side of the interior of the workbench through bolts, the workbench and the cleaning box are fixedly connected through the bolts, and a centrifugal fan box is arranged at the left end of the cleaning box. According to the dust removal equipment, a heat insulation seat is arranged at the joint of amotor shaft and a volute, the axial distance between a motor and the volute can be lengthened, and the problem that the torque is large after the motor shaft is lengthened is solved, so that the influence of high temperature generated by the volute on the motor can be isolated; a box body is arranged on the outer side of the centrifugal fan box, so that the noise generated by working of the motorthrough the volute can be further blocked when the motor works and operates, and the noise of the centrifugal fan box can be further relieved.

The invention discloses an insulating full inorganic binder for metal soft magnetic powder core and belongs to the technical field of magnetic material preparation. The insulating full inorganic binder is composed of borate, silicates, aluminosilicates and quartz; the mass compositions are: 48 to 70% borate, 5 to 8 wt% silicate, 20 to 40wt% aluminosilicates, 2 to 8 wt% quartz powder, wherein the borate is anhydrous sodium tetraborate powder; the silicate is sodium silicate powder; the aluminosilicates are two or more selected from talc, kaolin, albite, mica and potassium feldspar. The heat resistance temperature of the insulating full inorganic binder of the invention reaches 1000 DEG C; the invention can significantly improve the mechanical strength of the magnetic powder core, and the prepared magnetic powder core has comprehensive excellent magnetic properties and mechanical properties. The present invention is particularly suitable for iron-based magnetic powder cores and can significantly improve its high frequency performance and quality factors.

The invention discloses a method for preparing nano ITO powder at low temperature, and belongs to the technical field of nano ITO powder processing. The method comprises the following steps of S1, preparation of an aqua regia solution: using concentrated hydrochloric acid and concentrated nitric acid to prepare the aqua regia solution according to the volume ratio of 1:3; S2, dissolving and mixing: taking 40 ml of aqua regia solution, then weighing 10-20 g of metal indium and 3-5 g of tin tetrachloride, sequentially dissolving the metal indium and the tin tetrachloride in the aqua regia solution, and uniformly conducting stirring for later use to obtain a mixture; S3, co-precipitation: adding a sodium hydroxide solution into the mixture obtained in the step S2 while stirring, and carrying out co-precipitation on the sodium hydroxide solution and the mixture to obtain a colloid precursor of indium hydroxide and tin hydroxide; S4, filtering and washing: washing the colloid precursor obtained in the step S3 with distilled water for 2-4 times to obtain indium tin hydroxide; and S5, reaction. The invention solves the problem that an existing hydrothermal preparation process has high requirement on temperature resistance of equipment.