71results about How to "Good pressure resistance" patented technology

The invention discloses a deep sea bionic pressureproof shell. An axial-symmetry eggshell-shaped structure with the length of L, the width of B and the turning radius of R(x) is formed by a left end socket, a right end socket and a middle shell, wherein the thickness t2 of the middle shell is of an equal-strength variable-thickness structure, the thickness t1 of the left end socket and the thickness t3 of the right end socket are respectively of an equal-thickness structure, the left end socket and the middle shell are fixedly connected, and the right end socket and the middle shell are connected by a flange bolt or a movable hatch cover with a seal ring. The deep sea bionic pressureproof shell has good mechanical properties, in-shell space utilization rate, hydrodynamic characteristics and passenger comfort, and comprehensive improvement on safety, carrying capacity, mobility and diving time of a diving device is facilitated; meanwhile, the weight of the pressureproof shell is lightened, the reserve buoyancy of the pressureproof shell is increased, and the processing and manufacturing difficulty and cost are reduced.

The invention relates to a multimodal polyethylene pipe resin composition and a preparation method and application thereof. The composition comprises component A, component B and component C, wherein the component A is an ethylene homopolymer, the component B is an ethylene copolymer formed through copolymerization of ethylene and alpha-alkene and has an average molecular weight greater than that of the component A, and the component C is an ethylene copolymer formed through copolymerization of ethylene and alpha-alkene and has an average molecular weight greater than that of the component B; the composition has density of 0.935 to 0.945 g / cm<3> and MFR5.0 of 0.1 to 0.5 g / 10 min, and the content of comonomers is 0.2 to 0.7% by mol; each component has narrow molecular weight distribution, and Mw / Mn is equal to or less than 5. A pipe prepared from the polyethylene composition has excellent pressure resistance, and time to failure of the pipe is greater than 500 h when the pipe is tested both under the conditions of a temperature of 20 DEG C and circumferential stress of 13.9 MPa and under the conditions of a temperature of 80 DEG C and circumferential stress of 5.6 MPa.

The invention relates to a solvent-free polyurethane wear-resistant terrace paint and a preparation method thereof. The paint is composed of a component A and a component B, wherein the component A comprises the following components by mass parts: 60-80 parts of solvent-free hydroxyl-terminated epoxy resin, 1-13 parts of coloring pigment, 15-22 parts of wear-resistant filling material, 0.2-0.5 part of defoaming agent, 0-0.3 part of drier and 3-5 parts of oxazolidine dewatering agent; and the component B is 100 mass parts of solvent-free isocyanate-terminated prepolymer. When the paint is used, the component A finished product and the component B finished product are mixed and stirred uniformly at a ratio of 3:1 to obtain the solvent-free polyurethane wear-resistant terrace paint. According to the invention, the terrace paint can be cured at low temperature, is free of volatile organic compounds in the system, is low in residual isocyanate monomer content, can improve coating performance, and is suitable for terrace decoration and protection with wear-resistant and dustless requirements in plants, shops, guesthouses, gymnasia, stations, parking lots and other places.

The production process of composite pipe with stainless steel lining includes the technological steps of: welding common carbon steel belt into steel pipe in pipe welding production line; producing lining pipe in the outer diameter equal to the inner diameter of the outer pipe in a stainless steel pipe production line; and combination through either the heating expansion method, in which the outer pipe is fixed and heated by inducing windings into 250-360 deg.c before the inner lining pipe is inserted and the outer pipe is cooled to shrink and combine with inner pipe, or the mixed method, in which after the inner pipe is inserted into the outer pipe, the combined pipe is drawn in a drawing machine to compress the outer diameter and expand the inner diameter for combination.

The invention discloses a fiberglass reinforced plastic raw material for manufacturing an oil separation tank and belongs to the technical field of composites. The fiberglass reinforced plastic raw material is particularly prepared from the following substances: unsaturated polyester resin, epoxy resin, phenolic resin, complex fiber filling, an antioxidant, a polymerization inhibitor, a flexibilizer, a curing agent and an accelerator. Fiberglass reinforced plastic prepared from the raw material has good characteristics of corrosive resistance, impact resistance, bending resistance and pressure resistance; oily soil is not easily deposited on a surface; an antifouling characteristic is good; a service life can be prolonged to above 5 years; and the fiberglass reinforced plastic has a good popularization value.

The invention discloses a soil body stabilizing agent, composed of following materials by weight: 2-8 parts of lime, 28-50 parts of gypsum, 25-46 parts of slag and 46-65 parts of cement clinker and 0.5-1.3 parts of excitant which comprises 85% of xylogen, 12% of sulphonate and 3% of sodium sulfate. The soil body stabilizing agent has easy obtained materials and is suitable for the project base process such as reservoir, large dam, pond and soft foundation, various sullage curing process, sea filling project, oil field slime pulp process and the like. The stabilized soil body has good compression resistant, impervious and antifreezing performance; the building cost of projects is low and the construction is convenient.

The invention discloses a high-voltage-resistant silicon carbide device and a preparation method thereof, the high-voltage-resistant silicon carbide device comprises a silicon carbide substrate, a silicon carbide epitaxial layer arranged on the silicon carbide substrate and a drain metal electrode arranged on the back surface of the silicon carbide substrate, and a blocking injection region and a source injection region are sequentially arranged on the silicon carbide epitaxial layer; a plurality of first grooves and second grooves are etched in the silicon carbide epitaxial layer; a gate protection region is arranged at the bottom of the first groove, an oxide layer grows on the surface of the first groove, a gate polycrystalline silicon electrode is arranged on the oxide layer, and an insulating layer covers the gate polycrystalline silicon electrode; the bottom of the second groove is provided with a voltage-withstanding injection region, and the second groove is provided with a polycrystalline silicon filler. And the source electrode injection region and the insulating layer are covered with a source electrode metal electrode, so that the problems of low reverse voltage and complex process in the prior art are solved.

The present invention discloses a method for treating oily odour gas. Said method includes the following several steps: making the oily waste gas be passed through walnut shell filler, then undergone the spray treatment by using atomization spraying device over the walnut shell filler, then undergone the processes of biological method and / or ion oxygen method treatment, so that the oily waste gas can be greatly purified and cleaned.

The invention provides a water-based inorganic waterproof adhesive which comprises the following components in percentage by weight: 42%-45% of potassium silicate, 15%-24% of silicon sol, 2.3%-5.5% of silane coupling agents, 7%-14% of potassium hydroxide water solutions and 18%-25% of deionized water, wherein the mole ratio of SiO2:K2O is 4.7:1. The invention also provides a preparation method of the water-based inorganic waterproof adhesive. The invention also provides a waterproof coating. The water-based inorganic waterproof adhesive, the waterproof coating and the preparation method of the water-based inorganic waterproof adhesive, which are provided by the invention, are environmental-friendly, free of releasing formaldehyde, benzene and other harmful gases and stable in property, achieves the technical effects of preferable compression resistance, penetration resistance and good weather resistance because the mole ratio of SiO2:K2O is 4.7:1 and can be used for solving the problem of waterproofness of a back side and an upstream cement surface.

A semiconductor device which can make the generation of gate parasitic oscillations more difficult than a semiconductor device of the related art is provided. The semiconductor device 10 includes: a drift layer 15 which is constituted of a reference concentration layer 4 and a low concentration layer 3; a gate electrode structure 20; a pair of source regions 8a 8b, a pair of base regions 7a 7b, and depletion-layer extension regions 6a 6b which are formed in the reference concentration layer below the base regions 7a 7b, wherein the depletion-layer extension regions 6a 6b are formed such that a lower surface of the depletion-layer extension region is deeper than a boundary between the low concentration layer 3 and the reference concentration layer 4 and projects into the low concentration layers 3, and a dVDS / dt-decreasing diffusion layer 30 which contains an n-type impurity at a concentration higher than the concentration of the impurity which the reference concentration layer 4 contains and decreases dVDS / dt when the semiconductor device is turned off is formed on a surface of the reference concentration layer 4.

The invention provides a fiber reinforced polymer cement and compound vacuum adiabatic insulation plate. The vacuum adiabatic insulation plate comprises core materials and high strength gas film resistance with protective layer. The high strength gas film resistance with protective layer is wrapped in the periphery of the core material and sealed by vacuum-pumping with the core materials; the high strength gas film resistance with protective layer is compound made of an outside protective layer and an inside sealing layer. The plate is characterized by excellent heat retaining property, safety, durability and light and thin, and it is convenient for the industrialization of the vacuum adiabatic insulation plate.

The invention provides a pressure-resistant sealing structure of an imaging system. The structure comprises a hemispherical light-transmitting cover, a light shield, a sealing ring pressing ring, a light-transmitting cover base, a pressure-resistant cylinder, a rear end cover and an electrical interface; according to the pressure-resistant sealing structure of the imaging system, the transparent ceramic is adopted as an optical window of the hemisphere light-transmitting cover, the pressure resistance is better, the main body structure is of a spherical structure, and sealing design is conducted according to the characteristics of the hemisphere structure, so the sealing performance is better; as the main body structure adopts the spherical structure, the stress distribution is uniform, the stress concentration is not easy to occur, and the pressure resistance and portability are realized.

The invention discloses a heat-conducting silica gel material for computers, which comprises 100 parts by weight of methyl vinyl silicone rubber, 5-15 parts by weight of aluminum powder, 10-15 parts by weight of light-curing adhesive, 10-20 parts by weight of silane coupling agent, 10-20 parts by weight of vinyl trimethoxysilane, 15-20 parts by weight of divinyl silicone oil. The thermally conductive silica gel provided by this application has excellent compressive and tensile properties, and heat-resistant agents, flame retardants and additives are added to it. The heat-resistant agent improves the anti-aging ability of thermally conductive silica gel, and the flame retardant improves the flame retardancy of thermally conductive silica gel. Performance, additives improve the strength and thermal conductivity of thermal silica gel. In addition, hollow glass microspheres are added to reduce the density of silica gel.

The invention relates to the technical field of electronic devices, particularly an adhesive for electronic ceramic formation. The adhesive for electronic ceramic formation is composed of the following components in percentage by mass: 8-10% of diatomite, 2-4% of silane coupling agent, 8-11% of polyvinyl butyral, 4-8% of sodium aluminate, 6-8% of ethyl acetate, 13-19% of isopropanol and the balance of epoxy resin. The adhesive slurry has the advantages of favorable stability and excellent viscoelasticity, and can be widely used in electronic ceramic products. The prepared electronic ceramic has the advantages of higher dielectric constant, favorable stability and excellent voltage resistance.

The invention relates to the illumination field, in particular to a full-chip integrated AC LED light source. The full-chip integrated AC LED light source comprises a bridge rectifier circuit, a constant current tube, multiple LED chips and a substrate. A power contract is arranged on the substrate. The input end of the bridge rectifier circuit is connected with an alternating current power supply through the power contact. The output end of the bridge rectifier circuit is electrically connected with the input end of the constant current tube. The output end of the constant current tube is electrically connected with the LED chips. The bridge rectifier circuit, the constant current tube and the LED chips are all unpacked chips and are arranged on the substrate by means of a WB technology. The substrate is an aluminum oxide ceramic substrate. According to the full-chip integrated AC LED light source, good heat dissipation performance and pressure-resistant performance can be realized, and the safety performance is more reliable.

The invention provides a connecting assembly of an assembly type component, and relates to the field of component connection. The connecting assembly of the assembly type component comprises two C-shaped groove pieces and an I-shaped connecting piece, the C-shaped groove pieces are provided with component connecting parts used for being fixedly connected with the component, the I-shaped connectingpiece comprises a web in the middle and two side flanges, groove openings of the C-shaped groove pieces are in clearance fit with the web, the side flanges are used for being in stop fit with the inward-turned edges of the C-shaped groove pieces when the I-shaped connecting piece is inserted into the C-shaped groove pieces, wedge-shaped structures are further arranged on the C-shaped groove pieces and / or the I-shaped connecting piece, and the wedge-shaped structures are provided with wedge-shaped surfaces used for guiding the two C-shaped groove pieces to be fastened oppositely. The I-shapedconnecting piece gradually goes deep into the two C-shaped groove pieces, and the wedge-shaped surfaces of the wedge-shaped structures convert longitudinal movement into opposite fastening force on the two C-shaped groove pieces, so that the two components form fastening connection; and a plurality of bolts are replaced by the complete I-shaped connecting piece, so that the high-strength connecting requirement is met, the operation is simplified, and the construction efficiency is improved.

At least one substrate of a front substrate (11) or a rear substrate, is opposed to a processing electrode (34, 36) in a vacuum atmosphere, and an electric field is applied between the at least one substrate and the processing electrode, whereby the substrate is electric field-processed. After the electric field processing, the front substrate and the rear substrate kept in the vacuum atmosphere are sealed together to form an envelope.

The invention discloses a rotary air cylinder stroke adjusting screw which comprises a lead screw, a first nut, a second nut, a connecting rod, a spring buffer piece and a buffer cap. The first nut and the second nut are arranged at the two ends of the lead screw respectively, the connecting rod penetrates through the lead screw, the connecting rod is connected with the spring buffer piece, and the spring buffer piece is connected with the buffer cap. In this way, the rotary air cylinder stroke adjusting screw is good in buffer reset performance, good in pressure-resistant property and excellent in durability.

The invention belongs to the cable technical field and relates to an intelligent cable. The intelligent cable comprises a wire core; the periphery of the wire core is sleeved with a mica tape layer; the exterior of the mica tape layer is provided with a polytetrafluoroethylene layer; the outer side of the polytetrafluoroethylene layer is provided with a protective layer; a heat exchange metal layer is arranged between the protective layer and the polytetrafluoroethylene layer; a heat dissipation compressive structure is arranged between the heat exchange metal layer and the protective layer; the heat dissipation compressive structure comprises an inner annular compressive frame and an outer annular compressive frame; a plurality of supporting bars which are arranged axially and distributed annularly are arranged between the inner annular compressive frame and the outer annular compressive frame; and a cavity is formed among any two connected supporting bars, the inner annular compressive frame and the outer annular compressive frame. Compared with the prior art, the intelligent cable has the advantages of reasonable design, excellent compressive performance, high heat dissipation performance, intellectualization, high security, high reliability, firm structure and long service life, and can assist in preventing people from approaching the cable when the people are unaware of the cable.

The invention discloses a petroleum exploitation drill bit which comprises a connecting plate, a drill bit body, a left guide column and a right guide column. A through hole is formed in the center ofthe connecting plate, a connecting rod penetrates the through hole, the lower end of the connecting rod is connected with the drill bit body, bolt holes are formed in two ends of the connecting plate, the connecting plate can be connected with drill rigs, compression-resistant plates are fixedly mounted on the lower end surface of the connecting plate, an anti-vibration spring sleeves the connecting rod and is arranged between the compression-resistant plates and the upper end surface of the drill bit body, and the left guide column and the right guide column are arranged on two sides of theconnecting rod and are arranged between the compression-resistant plates and the upper end surface of the drill bit body. The petroleum exploitation drill bit has the advantages that the petroleum exploitation drill bit is novel in structural design and has excellent compression-resistant, abrasion-resistant and anti-vibration functions, deformation abrasion phenomena of the drill bit body can beeffectively prevented, the service life of the petroleum exploitation drill bit can be prolonged, and the petroleum exploitation efficiency can be improved.

The invention discloses a high-alumina bronze coating for repairing volume damage and a preparation method of the high-alumina bronze coating. The thickness of the high-alumina bronze coating can reach 2.5-4mm, the high-alumina bronze coating is prepared by means of coating the surface of a copper alloy matrix by using gas-atomization high-alumina bronze powder through a low-temperature supersonic spraying technology, the temperature of flame flow in the low-temperature supersonic spraying technology is only 600-900 DEG C, dimethylmethane serves as main gas, compressed air serves as oxidant gas, hydrogen serves as reducing gas, and nitrogen serves as power conveying carrier gas; and technological parameters of coating include that air pressure is 90 PSI, the pressure of the dimethylmethane is 68-80PSI, the flow of the hydrogen is 40L / min, the flow of the nitrogen is 40L / min, and the spraying distance is 140mm. The prepared high-alumina bronze coating is low in oxidation degree, low in thermal stress and large in thickness; and large-sized volume damage caused by severe wear of aluminum alloy parts of equipment can be repaired.

The present invention relates to a plateau-type fuse. The plateau-type fuse comprises an insulator body, a fuse cylinder, an insulation cylinder, a lower electrode fixing ring, an upper electrode and a seal module. The insulator body is a diameter-variable tubular structure, at least five annular umbrella skirts are arranged at the outer peripheral surface of the insulator body, a through hole is arranged at the outer peripheral surface of a position where the insulator body being close to a lower port, the fuse cylinder is arranged at the internal portion of the insulator body, and the insulator cylinder is sleeved at the upper end of the fuse cylinder; the lower electrode fixing ring is fixedly sleeved at the periphery of a contact metal arranged at the lower portion of the fuse cylinder and is clamped at the inner wall of the insulator body; the contact metal arranged at the lower portion of the fuse cylinder is connected with a lower cable in the through hole; the upper electrode is installed at the upper end of the internal portion of the insulator body and is in contact with the fuse cylinder tube cap of the fuse cylinder; and the upper electrode is connected with an upper cable, and the seal module is installed at the internal portion of the lower port of the insulator body. The plateau-type fuse is good in pressure-resistant performance and can be used in the plateau environment.

A drop-proof and pressure-resistant red wine bottle packaging box, relating to a wine package, an upper base (5) is provided on the upper surface of one side of the lower base (7), and the upper base (5) is connected with the hinge (2) The lower base (7) is movable, and the lower base (7) and the upper base (5) are provided with a decompression plate (1), and the upper end of the decompression plate (1) is respectively provided with a bottle mouth support (3) and bottle bottom support (4); through the present invention, the bottle body can be effectively fixed to prevent the shaking and collision of the bottle body during transportation, and it can also ensure that the wine bottle is laid flat to ensure the quality and quality of the red wine. The taste can also meet the needs of red wine lovers to enjoy fine wine anytime and anywhere, providing a guarantee for the red wine during transportation, and also guaranteeing the quality and taste of the red wine.

The invention belongs to the technical field of electronic equipment, and more specifically relates to a preparation method of a ceramic capacitor. The preparation method comprises following steps: 1, ingredients of an electronic ceramic composition are subjected to uniform wet grinding and drying; 2, the dried electronic ceramic composition is mixed with a ceramic molding adhesive at a certain ratio, and an obtained mixture is stirred to be uniform, and is subjected to pressure casting and moulding so as to obtain a green body; 3, the green body is subjected to adhesive removing, sintering, and ultrasonic cleaning successively; and 4, the green body is subjected to sorting, silver printing, reduction, measuring, and encapsulating; wherein adhesive removing temperature is controlled to be 280 to 400 DEG C, sintering temperature is controlled to be 1350 to 1430 DEG C, and sintering time is controlled to be 3 to 4h. The ceramic capacitor obtained via the preparation method possesses relatively high dielectric constant, high capacitor stability, and excellent voltage withstand characteristics; the preparation method is simple; equipment requirement is low; production cost is low; and profit rate is high.

The extreme-pressure cutting fluid is prepared from the following raw materials in parts by weight: 8-15 parts of barium petroleum sulfonate, 3-8 parts of lead naphthenate, 11-19 parts of triethanolamine, 5-9 parts of composite diethanolamine borate-polycarboxylate, 7-12 parts of sodium molybdate, 5-6.7 parts of tallow, 1.2-5 parts of epoxyethane, 3.5-9 parts of diethylene glycol, 2.5-8.5 parts of monoisopropanolamine and 15 parts of water. The cutting fluid has excellent compression resistance, and can satisfy the requirements in the aspects of lubricating property, cooling property and the like.

The invention provides a slow-release chemical paraffin removing ball, and a preparation method and applications thereof. The slow-release chemical paraffin removing ball is prepared through followingsteps: EVA and a paraffin inhibitor are mixed, and an obtained mixture is prepared into balls. The slow-release chemical paraffin removing ball comprises, by mass, 40 to 50% of EVA, 40 to 50% of sodium stearate, 1 to 5% of carboxymethyl cellulose, 2 to 3% of a pour-point depressant, and 2 to 3% of a cosolvent. According to the slow-release chemical paraffin removing ball, EVA is taken as a sphereskeleton, and physical paraffin control effect is achieved; the contained medicines are taken as paraffin inhibitors, and chemical paraffin control effect is achieved; the paraffin inhibitors are mixed in EVA, carboxymethylcellulose sodium is taken as a slow release agent, so that sodium stearate can be released in crude oil at a slow speed, long lasting effect is achieved, paraffin control treatment on different parts of a whole pipeline can be realized; and the pour-point depressant is capable of reducing paraffin precipitate rate.

The invention discloses an extruded board door. The extruded board door comprises a door core and a door pocket. The door pocket is composed of two door face boards. The door core and the door face boards have the same shape. The door core is fixed between the two door face boards. The door core is an integrally formed solid body. The two opposite sides, parallel to the door face boards, of the door core are provided with a plurality of vertical grooves. One short edge of the door pocket is provided with a through hole. A transverse groove is formed in the middle of the top face of the door core. The forming direction of the transverse groove is from one long edge of the door core to the other long edge of the door core. Each vertical groove is provided with a channel groove connected with the transverse groove on the top face of the door core. The through groove is formed in the transverse groove. The extruded board door has the beneficial effects of having good pressure resistance, moisture resistance, stability, rot resistance and the like and being capable of being protected against the problems such as peeling, bubbling and slotting caused by temperature and humidity changes.

The invention discloses a high-energy-density strontium bismuth titanate based composite ceramic and a preparation method thereof. Constituents of the high-energy-density strontium bismuth titanate based composite ceramic are expressed by a general formula (1-x-y)Sr(1-1.5)z(Bi0.8La0.2)zTiO(3-x)(Bi0.5Na0.5)(1-m)MgmTiO(3-y)Bi0.5Li0.5(Ti0.92Mn0.08)O3, wherein x, y, z and m represent molar fractions; x is greater than or equal to 0.2 and less than or equal to 0.7; y is greater than or equal to 0.01 and less than or equal to 0.2; z is greater than or equal to 0.05 and less than or equal to 0.3; m is greater than or equal to 0.02 and less than or equal to 0.2. The high-energy-density strontium bismuth titanate based composite ceramic is prepared by adjusting the constituents to form a composite composition, and adopting microwave sintering to form a dense structure with uniform and small crystal grains, so as to keep a high dielectric constant and obtain a high withstand voltage. The preparation method disclosed by the invention is simple and stable in preparation process and suitable for industrial popularization and application. The high-energy-density composite ceramic dielectric material is excellent in energy storage characteristic and energy storage efficiency; the stored energy density can be up to 1.9 J / cm<3>; the energy storage efficiency can be up to 65%; the high-energy-density composite ceramic dielectric material is environment-friendly, low in loss and good in practicability.

The invention relates to the technical field of water pumps, in particular to a pressureproof water pump with an anti-deformation shell. The pressureproof water pump comprises a water pump body. The water pump body comprises a pump shell. A pump spindle is arranged in the pump shell. A pump spindle rotor set is arranged on the upper portion of the pump spindle. A motor stator set is arranged outside the pump spindle rotor set and mounted on the upper portion of the inner wall of the pump shell. An impeller is arranged at the bottom of the pump spindle. A water outlet is formed in the lower portion of the left side of the pump shell. A water inlet is formed in the middle of the bottom face of the pump shell. Supporting legs are arranged on the bottom face of the pump shell. A plurality of rotary force unloading toroid shells are arranged on the pump shell. A damping base is mounted at the bottom end of the pump shell. The pressureproof water pump is convenient to use, can bear large pressure and good in pressure resistance and not prone to being deformed; force unloading faces can be formed through the rotary force unloading toroid shells conveniently when flow pressures in different direction are applied to the water pump, the pressure resistance of the pump body is improved, the effect that the pump body is not reshaped or deformed is ensured, thus, the pump body works normally, the service life of the pump body is prolonged, and maintenance of the pump body is reduced.