117results about How to "Good air tightness" patented technology

The invention discloses an updraft continuous casting process of Cu-Cr-Zr alloy bar materials with high strength, high conductivity and high softening temperature, mainly adopting a smelting furnace with non-vacuum and low-furnace pressure tightness, a casting furnace and an updraft device. The invention adopts an updraft continuous casting device and technique under the condition of non-vacuum, realizes continuous production of Cu-Cr-Zr alloy bars, is not affected by the capacity of a furnace body, and can produce Cu-Cr-Zr alloy bar materials with any lengths. Obtained products are important raw materials for producing copper alloy products with high strength and high conductivity, such as contact lines of high-speed trains, spot-welding electrodes, current contact nozzles, lead frames, motor conducting bars, and the like.

The invention discloses a water-saving, non-blocking, clean and sanitary automatic toilet which uses the human gravity switching force. A toilet cover is automatically closed and opened, so the toilet can flush automatically after being used. A lower opening of the toilet is separated in a piston or ball valve manner so as to circulate with the air in a lower pipeline. Compared with the sealing effect of the traditional water lock, the toilet has excellent effect and saves water. The toilet piston can move downwards (upwards) and rotate; an upper opening, a lower opening and a passage turning of the toilet are provided with fixing spray nozzles; a spray shaft pipe of the toilet is provided with a spray nozzle which is capable of rotating along the shaft; the water of the toliet is added by the tap water or is finished by pedalling; the spraying process is finished by recycling an elastic glue pipe; the pressure of cleaning stream of the toilet is greater than that of the traditional toilet; the toilet saves water; and the spray nozzles of the toilet has a sleeve structure. The toilet can be cleaned by the water steam; and a steam pot is provided with a heating passage which is communicated with the toilet ring. The structure of the connection passage ball valve of the toilet is controlled by the spraying pressure. The inner wall of the upper part of the toilet is provided with a camera.

The invention relates to an MEMS (micro-electromechanical systems) device and a vacuum encapsulation method of the wafer level thereof. The device is characterized in that wafer level vacuum encapsulation is realized by adopting a silicon-silicon direct bonding technology, a low-resistance silicon wafer is adopted in a silicon structure layer (15) bonded to a silicon substrate, and is directly etched on the silicon layer to form an electrical interconnection lead wire (5); and aluminum electrode (14) is sputtered on an electrical interconnection lead wire bonding area (4) in a lead wire through hole (13) of a silicon nut cap (12). The device has the advantages that a total silicon structure is adopted, and no residual stress exits after bonding, so that the working performance of the device can be greatly improved; low-resistance silicon is utilized as an electrode lead wire, so that damage of high temperature to a metal electrode in the silicon-silicon direct bonding process can be avoided; and the silicon-silicon direct bonding air tightness is extremely good, so that the encapsulation cost is greatly reduced. The method is high in accordance and reliability, and the process is easily implemented.

The invention relates to a full-automatic addictive-free clean and sanitary closestool capable of saving a large amount of water, which converts human gravity into power, and automatically flushes after the human excretion. According to the closestool, a piston is arranged at the lower opening of the closestool to isolate the outlets of sewage and the like, and the air sealing effect is better than the effect of the conventional closestool depending on the water trap to store water for sealing odor. The piston of the closestool can move downward, so as to directly transfer the human excrement to a closestool passage to be rotated, and as the flushing water pressure of the closestool is higher, a large amount of water is saved, and with the quantitative water spraying after the urination according to the set time, much more water is saved; the closestool is provided with a toilet paper shredder, so as to avoid the problem of sewage blockage; and an electronic scale can also be mounted on the closestool as required.

The invention discloses an expansion compensation device of solar evacuated collector tube and a processing technology thereof, relating to the field of solar evacuated collector tube. The expansion compensation device is arranged between an inner metal tube and an outer glass tube and comprises a corrugated tube arranged on the outer part of the inner metal tube; one end of the corrugated tube is fixedly connected with the inner metal tube via a connecting piece, and the other end of the corrugated tube is fixedly connected with the outer glass tube via a glass metal transition piece. The device of the invention is suitable for medium and high temperature and has the advantages of simple structure and favourable gas tightness. The processing method of the device of the invention comprises the steps of cleaning, burning hydrogen for annealing treatment, sealing and annealing and has the advantages of simple operation and easy annealing.

The invention discloses an engine aluminum alloy front cover and its manufacturing engineering, in which the chemical composition consists of (mass%): 7.8-8.2% silicon, 2.6-3.0% copper,0.25-0.35% magnesium,0.28-0.38% manganese and the other is aluminum. The manufacturing engineering includes: first preparing die for the front cover and water circulating channel core for inactivity; smelting the aluminum alloy raw material with a perfect allocation according to the said proportion in die-casting furnace and performing aftertreatment deaeration, metamorphic conditioning and temperature administration; when pouring, accurately placing water circulating channel core into front cover die cavity, then pouring the acceptable aluminum alloy liquor into pouring cup on the said die, performing gravity roll-over casting with metallic gravity casting machine to make the aluminum alloy liquor enter die cavity smoothly and steadily; after casting, obtaining the product by cold-setting, impact cleaning and central handling. The said aluminum alloy front cover is of smooth surface, dense internal organization, good air impermeability and fewer holes, which can effectively improve the engine service behavior.

The invention relates to a pressure sensitive vacuum bag sealing adhesive tape applicable under room temperature to 220 DEG C. Chlorinated butyl rubber is adopted as the base adhesive material of the sealing adhesive tape. Tackifying resin, a filler, a vulcanizing agent, an activator, a scorch retarder, a water-absorbing agent, and a coupling agent are added to the base adhesive material. The adhesive tape has the following advantage: the air permeation of chlorinated butyl rubber is the lowest among all general rubbers, such that chlorinated butyl rubber has good air tightness; the sealing adhesive tape has good heat resistance, wherein phenolic resin vulcanized chlorinated butyl rubber has as an application temperature range from room temperature to 220 DEG C; the sealing adhesive tape is pressure sensitive, such that sealing can be realized with finger pressure, wherein the pressure sensitivity is provided by polyisobutylene; the sealing adhesive tape has good adhesiveness on various sealing films and molds. A vacuum bag prepared with the sealing adhesive tape can provide pressure close to 1atm. With the sealing adhesive tape, long-time sealing can be realized under room temperature to 220 DEG C, and leakage is prevented. The sealing adhesive tape is convenient to use.

The invention relates to a method of light emitting diode (LED) packaging. The method of LED packaging comprises the following steps: supplying a support and forming a mental layer on the support, wherein an LED chip is arranged on the support, and the metal layer is formed outside the LED chip; supplying a lens and forming a mental layer on the lens, wherein the position of the mental layer of the lens corresponds to the position of the mental layer of the support; installing the lens on the support to enable the mental layer of the support and the mental layer of the lens to take place an eutectic reaction, so that the lens and the support are combined in a whole. The formed LED structure comprises the support, the LED chip and the lens, wherein a circuit is formed on the support, the LED chip is fixed on the support and connected with the circuit of the support in an electrical property mode, and the lens is arranged on the LED chip and connected with the support. A eutectic alloy layer is formed at the position of the support and the lens connecting to connect the lens with the support into a whole in a non-removable mode. The LED structure is strong in adhesive strength and good in air impermeability, and stability and reliability of the LED structure can be effectively improved.

The invention discloses a packaging structure for an ultraviolet luminous diode. The packaging structure for the ultraviolet luminous diode comprises a TO type metal pipe seat with a plurality of pipe feet and a metal pipe cap, wherein a luminous chip emitting ultraviolet light is arranged on the metal pipe seat, and a positive electrode and a negative electrode of the luminous chip are respectively welded on a positive electrode pipe foot and a negative electrode pipe foot of the metal pipe seat through wires. The metal pipe cap is fixed on the metal pipe seat, a light-transmitting window body is arranged on the metal pipe cap, and the light-transmitting rate is greater than 50 percent at an ultraviolet band. The packaging structure for the ultraviolet luminous diode is stable and, strong in anti-interference capacity, and has the advantages of being good in air tightness, firm in structure and the like. Good protection, anti-oxidation and water-proof functions for the ultraviolet luminous chip can be achieved, and therefore normal use of ultraviolet light sources utilizing the packaging structure in any environmental condition is practically ensured, the problem of aging of devices due to packaging materials is avoided, and service life of the ultraviolet luminous diode is prolonged.

A process for preparing the high-molecular reinforced porous proton exchanging membrane used for fuel battery includes such steps as using the solution containing alkali-metal ions to treat the solution of perfluorosulfonic resin to obtain M-type perflworosulfonic resin, combining it to porous teflon membrane, and heat treating at 345 deg.C for high adhesion. Its advantages are high air tightness, strength and proton transfer power.

The invention discloses an inflatable type outer windscreen of a motor train unit. The inflatable type outer windscreen of the motor train unit is characterized in that the periphery of the end face of a front car (1) is fixedly connected with an inflatable integral-ring-shaped rubber air bag (3), the periphery of the end face of a rear car (2) is also fixedly connected with an inflatable integral-ring-shaped rubber air bag (3), and the opposite surfaces of the two inflatable rubber air bags (3) are tightly attached to each other. The inflatable type outer windscreen of the motor train unit has good air tightness, heat-shielding performance, sound insulation performance and rainproof performance, small aerodynamic resistance and good curve passage capacity, and can provide a safer and more comfortable walking-through environment for passengers, and provide more effective protection for car flexible connection devices.

The present invention discloses a linear rubber material of a linear rubber butterfly, which is obtained through compounding rubber mass A and rubber mass B. The rubber mass A and rubber mass B are respectively composed of the following components in weight percentage: the rubber mass A is composed of: 85-95 part of nitrile butadine rubber, 0.3-0.5 part of sulphur, 4-6 parts of zinc oxide, 3-4 parts of eleaostearic acid, 2 parts of antioxidant, 1-2 parts of 5-di-tert-butylhydroquinone DTBHQ, 1-2 parts of antioxidant RD, 1-2 parts of antioxidant OD, 3-4 parts of paraffin, 22-25 parts of fast extruding furnace black N660, 62-65 parts of high-wearing-resistance furnace carbon N330, 18-22 parts of dioctyl, 25-35 parts of attapulgite, 3-4 parts of promoter M, 1-2 parts of promoter DM, and 1-2 parts of promoter PZ; and the rubber mass B is composed of: 85-95 parts of fluorubber 246, 1-2 parts of zinc stearate, 1-3 parts of antioxidant RD, 0.4-0.6 part of furnace black dispersing agent T-78,1-2 parts of antilux, 45-55 parts of fast extruding furnace black, 10-14 parts of pottery clay, 5-8 parts of dioctyl, 4-6 parts of lead tetraoxide, 0.8 part of vulcanizing agent DTDM, and 1-2 parts of promoter CZ. The linear rubber material of the invention has excellent comprehensive performance. The vulcanized liner rubber butterfly valve has the following characteristics: good air-tightness, high weather resistance, high low-temperature resistance, high oil resistance, low material cost, etc.

The sewer decomposer includes one main structure comprising water inlet end cap, float ball bin and water outlet end cap connected successively, float ball set inside the float ball bin, and upper sealing ring and lower sealing ring set separately on the water inlet end cap and the water outlet end cap. The close contact between the upper sealing ring and the lower sealing ring with float ball avoid the upward flow of sewage and the leakage of the sewer smell. The upper sealing ring has concave spherical surface of curvature radius equal to or smaller than the radius of the float ball, while the lower sealing ring has concave spherical surface of curvature radius equal to or greater than the radius of the float ball, so that one layer of water film in certain tension is formed between the float ball and the lower sealing ring for avoiding the leakage of bad sewer smell. The present invention may be used to replace traditional drain trap and floor drain.

The invention relates to an air tight construction of changeover valve, in particular to air tight construction for changeover valve of rotation heat accumulating type incinerator. The changeover valve comprises a stator and a rotor, the air tight construction is arranged at the periphery of the rotor, so that the gap between the stator and rotor is air tight, and the air tight construction comprises a first sealing device and a second sealing device, wherein the first sealing device is provided with a permanent seat, a connecting part, first sealing material, a conductive and against construction member, a locking and fixing construction member and a spring, and the second sealing device is provided with a fastening construction member and second sealing material. By virtue of the two sealing devices or the first sealing device, complete air tight construction of the changeover valve is provided, and the air tight construction has heat resistance, abrasion resistance and chemical stability.

The invention discloses a manufacturing technology of an integrated oil storage cylinder and an extension mould, belonging to the machining technology and the mould technical field. The technology comprises the following steps: shearing bar stock, cupping blank, primary extending, leveling opening, annealing, pickling, phosphating, saponifying, secondary extending, third extending, leveling opening, grinding excircle, closing up, leveling overall length, chamfering, burring and machining a circular groove; the mould comprises an upper die base (11) and a lower die base (12), wherein, the upper die base (11) is connected with a stamping terrace die (2) through an upper die pressing ring (1) and an upper die quilt cap (13); the lower die base (12) is provided with an unloading ring (6), a lower die (5), a lower pressing ring (8), an upper die (4), an upper pressing ring (9) and a locating ring (3) from the bottom to top; the lower die (12) is connected with a lower quilt cap (10); and a discharging ring (6) is composed of three isotonic arc blocks and two extension springs (7) embedded in the groove of the external ring of the discharging ring. The manufacturing technology of the invention is suitable for manufacturing oil storage cylinders in shock absorbers for automobiles.

The invention discloses a radio frequency interconnection method for a TR assembly and an antenna array plane and aims to provide a radio frequency interconnection method which is high in channel density, good in air tightness and easy to disassemble, assemble and maintain. According to the technical schemes of the invention, an antenna bearing dielectric substrate is tightly pressed on a radio frequency insulator metal substrate through a fuzz button metal substrate; polymer-based composite dielectric tubes vertically corresponding to the lower array surfaces of patch antennas penetrate through the fuzz button metal substrate and are tightly attached to the end surfaces of radio frequency connection insulators; the radio frequency connection insulators integrally sintered on a TR assemblystructural member outer conductor through insulator solder are assembled in the stepped holes of the TR assembly structural member outer conductor in a manner that the radio frequency connection insulators are corresponding to the polymer-based composite dielectric tubes; fuzz button inner cores are tightly pressed on T-shaped probes, and insulator inner conductors are connected with the interconnection end of the TR assembly through glass dielectric insulation bodies filling insulator outer conductor holes and air coaxial matching cavities which are arranged below the glass dielectric insulation bodies and are in sealed matching with the glass, so that a coaxial transmission structure is formed.

The present invention discloses a window which treats effectively dew-water generated on a window glass to prevent dust, stain and bad smell from being generated and capable of storing dew water in a means for treating dew-water for a certain time to maintain properly an indoor humidity and enhance the air-tightness, water-tightness and adiabatic property. The window according to the present invention comprises a window frame including a vertical frame for supporting a vertical side of a window glass and a horizontal frame for supporting a horizontal side of the window glass; and a dew-water treating means including a dew-water flow passage provided on the horizontal frame and a drainage trap provided on the window frame for discharging dew water introduced from the dew-water flow passage and stored therein to an outside. Here, the drainage trap comprises a dew-water inflowing port being communicated in fluid with the dew-water flow passage; a dew-water storing space for storing dew-water in-flowed through the dew-water inflowing port; and a dew-water drainage port being communicated in fluid with an upper portion of the dew-water storing space for discharging dew-water stored in the dew-water storing space.

The invention discloses a positive and negative pressure enhanced drainage shaft structure for precipitation of a landfill site and construction method. The shaft pipe structure comprises a negative pressure suction seal section with the upper section not provided with holes, a percolating liquid inlet section with the middle section provided with holes and a sand settling section with the lower section not provided with holes. The material of the shaft pipe is galvanized steel pipe, and has good corrosion resistance and deformation resistance. The construction of the shaft is completed by digging a hole, laying down a shaft pipe and a steel reinforcing cage, filling and sealing and filtering a material, installing a pumping pipe and pumping / injection gas pipeline, sealing a head of theshaft, washing the shaft and the like. When the shaft is pumped by a submersible pump, the negative pressure pumping is carried out simultaneously. The percolation gradient of the percolation fluid isincreased by the high negative pressure in the shaft. At the same time, the block effect of the landfill gas on the percolation of the percolation fluid is weakened so as to improve the working performance of the shaft. Silt is produced after a period of operation, and the shaft can dredge the sieve hole by injecting positive pressure gas into the shaft to recover the drainage performance.

The invention discloses a constant-temperature and constant-humidity air supply system. The constant-temperature and constant-humidity air supply system comprises a refrigerating system, a heating system, a control system, a humidity system, a supply air circulating system, a sensor system and a protection panel. The refrigerating system is composed of a compressor, a condenser, a throttling mechanism and an evaporator. The heating system is composed of a high-power resistance wire and a heater. The control system is controlled by PID. The humidity system is composed of a humidification subsystem and a dehumidification subsystem. The sensor system is composed of a temperature sensor and a humidity sensor. The supply air circulating system is composed of an air supply unit and a drive motor, and the air supply unit is composed of an air inlet mixing section, a coarse filtering section, a middle section, a heating section, a spraying section, a surface cooling section, a flow equalizing section, a medium-effect filtering section, a silencing section and an air supplying section. The constant-temperature and constant-humidity air supply system can accurately realize constant temperature and constant humidity in the indoor environment, is suitable for the machinery industry, the electronics industry and the like and has the advantages of being reasonable in structure, good in air impermeability and high in reliability.

The invention discloses a method for detecting free and bound trace cyanide and belongs to the technical field of analysis and detection. The method is mainly used for beverage wine and its raw material analysis. The method utilizes a specific pretreatment and derivatization device to respectively treat the free or bound cyanide samples. Aiming at a free cyanide, the hydrocyanic acid is released and the cyanide group is directly derived. Aiming at the bound cyanide, the bound cyanide is converted into free hydrocyanic acid and the free hydrocyanic acid is derived through a derivatization reagent. The derivative is subjected to qualitative and quantitative analysis based on the liquid chromatography-mass spectrometry combined technology. A standard curve is built by an internal standard method. The contents of the free and bound cyanides are respectively calculated. The detection method has a detection limit of 0.01 micrograms per liter, a quantification limit of 0.05 micrograms per liter, a linear correlation coefficient of more than 0.99, an adding standard recovery rate of 93.8% to 106% and relative standard deviation of less than 10%. The method has the advantages of high detection sensitivity, short time and small interference, and can meet the requirements on free and bound cyanide determination.

The invention discloses a framework type tooling for molding a composite material product autoclave; longitudinal reinforcement ribs and transverse reinforcement ribs are in cross connection, and are welded with a molded surface to form an integrated framework structure; the bottom of the longitudinal reinforcement ribs and the bottom of the transverse reinforcement ribs are fixedly welded with a bottom flat plate; four corner edges of the molded surface are each provided with a processing and testing datum hole of a process device, and both sides of the framework are each fixed with a hanging device; a suction nozzle is located in a central axis of both ends of the molded surface, and a suction pipe is connected with the suction nozzle and forms a pressurized gas pumping system with a suction connector; the bottom surface area of the molded surface is provided with a plurality of temperature sensors, and the temperature sensors are connected with temperature monitoring connectors by wires to form a temperature monitoring system. The surface smoothness of the tooling molded surface is good, air tightness and manufacturability are good, the service life is long, the deformation is small, temperature rising and dropping are uniform when the tooling is used in the autoclave, the tooling has good thermal conductivity and thermal stability and meets the process technology requirements of the composite material product autoclave molding, and the quality of the molded composite material product is stable and reliable.

The invention relates to a perforating movable line bundle airtight technology which comprises the following steps: 1. punching a bottom layer 1: (1) adding a casting head at the bottom end of cable aperture which is perforated with leads by using a silicon rubber GD414 rubber tube for bottoming and encapsulating; (2) fixing line bundles at two sides on a side wall of a shell by using paper self-adhesive tapes; and (3) curing at normal temperature for 24h; 2. encapsulating a middle layer 2: (1) uniformly stirring equivalently proper amount of A type adhesive HJ101 and B type adhesive HJ101 in a container; (2) stopping encapsulating in the position having 1-2mm distance to an orifice, and using a heat blower to blow the liquid adhesive; (3) adding proper liquid adhesive to enable an adhesive surface to be flushed with an upper end surface of the perforating hole; (4) after the liquid adhesive does not flow, finishing and clearing; (5) standing and curing at normal temperature for 24h; and (6) clearing adhesive residues and dirt on an external surface in a part encapsulating position; and 3. encapsulating a top layer 3: uniformly covering a layer of 703 silicon rubber on the surface of HJ101 epoxy resin adhesive, and curing at normal temperature. The invention has simple technology and good air tightness, and can not leak air under the condition of high temperature or low temperature.

The invention provides a biomass gasification system, comprising a gasification furnace and a feeding device, wherein the gasification furnace comprises a furnace body and a blanking pipeline; the furnace body comprises a gas outlet, a fire grate and a feed inlet; the gas outlet is formed in the sidewall of the furnace body; the fire grate is arranged on the bottom of the furnace body and is provided with a gas inlet; the blanking pipeline is arranged on the top of the furnace body at a position corresponding to the feed inlet; the feeding device comprises a storage bin, a feeing pipeline, a kicking mechanism, a first hermetic door, a second hermetic door and a sealing assembly; the feeing pipeline is arranged on the top of the storage bin; the first hermetic door is arranged on the feeing pipeline; the kicking mechanism is mounted on the bottom of the storage bin; the second hermetic door is arranged in correspondence with the blanking pipeline and is provided with a driving rod; the driving rod is provided with a sealing cover; the sealing cover comprises an upper end surface and a sidewall, and the upper end surface is provided with small holes; the sealing assembly comprises a water tank arranged on the storage bin; the water tank is provided with a channel used for penetrating the driving rod; the channel is tubular; and the sealing cover covers the channel. The biomass gasification system provided by the invention has good airtightness during feeding, and is uniform in feeding, safe and highly efficient.

The invention discloses a device and a method for preparing trichlorosilane from silicon tetrachloride. The device comprises sealing flanges, variable backing rings, high-voltage baffle rings, an electric medium, an outer electrode and an inner electrode, wherein the inner electrode is positioned at the position of an axis; two ends of the inner electrode are respectively connected with the two sealing flanges; two ends of the electric medium are respectively connected with the two sealing flanges; the inner electrode is sleeved by the electric medium; the electric medium is sleeved by the high-voltage baffle rings; the high-voltage baffle rings are tightly adhered to the sealing flanges; the outer surface of the electric medium is tightly wrapped by the outer electrode; an air inlet guide hole is formed in one sealing flange; an air outlet guide hole is formed in the other sealing flange. The device is flexible in structure and good in air tightness, geometrical parameters of the device can be easily adjusted, and damage caused by air leakage can be eliminated; breakdown voltage can be effectively reduced, plasma can be maintained in an unbalance state, low-temperature plasma can be easily generated, and the electron density inside a discharge gap can be effectively increased; the device is wide in operation range, and can work with relatively high air pressure, voltage, frequency and power.

The invention is applicable to the field of LED (light-emitting diode) production technologies and provides a manufacturing process of a low-power TOP LED support, which comprises the following steps: step 1) performing plate cutting on an epoxy insulating plate and drilling a first through hole; step 2) dividing a plurality of electroplating regions on the main surface and the back surface of the epoxy insulating plate, performing electroplating on the electroplating regions, and forming gaps between the electroplating regions on the main surface after completing electroplating; and step 3) dividing an injection molding region on the main surface of the epoxy insulating plate, and performing injection molding of a plastic reflecting cup on the injection molding region. The invention further provides the TOP LED support, and the support is manufactured by the manufacturing process. The invention further provides an LED module, and the support adopted by the LED module is the low-power TOP LED support provided by the invention. As for the manufacturing process of the low-power TOP LED support and a product and the LED module thereof, the processing difficulty is small, and the production cost is low.

The invention belongs to the field of plastic film materials, and relates to a film material for a greenhouse and a preparation method of the film material. The film material comprises PE (polyethylene), PVC (polyvinyl chloride), polyethylene glycol diacrylate, methyltriacetoxysilane, trimethylsiloxysilicate, polyethylene adipate-1,4-glycol, polyglycerol polyricinoleate and triethyl citrate. The preparation method comprises the following steps that (1) a high-speed mixer is started and the materials are added for high-speed uniform mixing; (2) extruding granulation is performed by a twin-screw extruder; (3) the materials are plasticized and then extruded; (4) the materials are pulled; and (5) the materials are flattened to form the film material for the greenhouse. The prepared film material for the greenhouse has good tensile strength, tearing strength and air tightness.

The invention discloses a wear-resistant and anti-ageing automotive rubber damping piece material. The wear-resistant and anti-ageing automotive rubber damping piece material comprises the following raw materials in parts by weight: 20-30 parts of natural rubber, 20-25 parts of butyl rubber, 10-15 parts of butadiene rubber, 20-25 parts of wear-resistant polyvinyl chloride masterbatches, 4-7 partsof talcum powder, 2-5 parts of a toughener, 2-4 parts of an antioxidant, 1-4 parts of an anti-ageing agent, 1-3 parts of a coupling agent, 3-9 parts of mineral oil, 3-6 parts of a maleic anhydride compatilizer, 3-7 parts of paraffin, 5-8 parts of nano barium sulfate, 2-5 parts of modified nano silicon nitride, 1-3 parts of potassium stearate, 2-5 parts of a promotor, 2-4 parts of a crosslinking agent, 1-2 parts of zinc borate and 3-7 parts of sulphur. The wear-resistant and anti-ageing automotive rubber damping piece material is reasonable in formula, the compatibility of various components isgood, and the prepared damping material has the advantages of high damping coefficient, high resilience force, damping ability, high temperature resistance, ageing resistance, creep resistance, wearresistance, good flame retardant and the like, and is suitable for automotive damping products.

The invention relates to an apparatus for simulating natural gas micro-leakage. The apparatus comprises a cylinder and two detachable sealing covers arranged at both ends of the cylinder and used forsealing the cylinder, wherein the cylinder is sequentially provided with a gas storage chamber, a filling chamber and a gas inlet buffer chamber from upstream end to downstream end, the filling chamber is filled with soil, at least a sampling port is arranged on the side wall of the filling chamber, an air pressure gauge is arranged on the side wall of the gas storage chamber, the gas inlet bufferchamber is separated from the filling chamber through a separation layer I, the side wall of the gas inlet buffer chamber is provided with a gas inlet, and the gas inlet is connected to a simulatinggas source. According to the present invention, the apparatus is used for simulating natural gas micro-leakage; during the detecting, the air pressure tightness is good, and the soil pH value and thesoil moisture are basically maintained, such that the natural gas micro-leakage can be well simulated so as to achieve the desired effect; and the apparatus can be used for simulating the natural gasmicro-leakage conditions under the artificial simulation conditions, can regularly monitor the quantity change and the population development condition of earth surface soil hydrocarbon microorganisms, and can provide the basic theoretical support for actual field exploration.

The invention relates to the technical field of chemical coatings. A high-solid-state epoxy coating used for a plurality of nuclear reactor types comprises a first component and a second component; the first component comprises: by weight, 25-40 parts of epoxy resin, 5-10 parts of an epoxy activity diluent, 30-50 parts of a radiation resistant color filler, 0-3 parts of an anti-settling agent, 1-5 parts of a wetting dispersant, 5-10 parts of a solvent and 0-5 parts of an antifoaming agent; and the second component comprises: by weight, 20-60 parts of anacardol-modified phenolic aldehyde amine, 10-20 parts of an alicyclic amine additive product, 20-50 parts of the radiation resistant color filler, 0-5 parts of the wetting dispersant, 5-10 parts of the solvent and 0-5 parts of the antifoaming agent. In the high-solid-state epoxy coating, the volume solid part reaches up to 85%, the high-solid-state epoxy coating has a strong adhesive force to steel structures and concrete surfaces, can meet irradiation and LOCA (loss of coolant accident) compound tests, and has excellent irradiation resistance; the cumulative irradiation dose can reach 1*107Gy, the decontamination rate can reach above 95%; and the high-solid-state epoxy coating has a good heat conduction capability, a low flame propagation ratio, air permeability performances and wear resistance.