165 results about "Heat resistant" patented technology

The invention relates to the technical field of aluminum alloy wire processing, and particularly discloses a high-modulus high-conductivity heat-resistant aluminum alloy material, an aluminum wire, a preparation method and a power transmission cable. According to the high-modulus, high-conductivity and heat-resistant aluminum alloy material provided by the invention, the nanoscale TiB2 particles and the micron-sized SiC particles are compounded in the aluminum alloy powder, a dual-reinforcement system is constructed, and the mechanical property and the electrical property of an aluminum conductor are synergistically improved. The invention further provides a preparation method of the high-modulus and high-conductivity heat-resistant aluminum conductor. According to the process, a multi-stage coupling plastic processing technology of hot extrusion, continuous rolling, drawing and surface treatment is adopted. The grain structure is refined through the dynamic recrystallization effect in the series of machining processes, oxidation film defects on the surface and in the structure are damaged through plastic deformation, the rigidity and the conductivity of the aluminum wire are further optimized, and the technical bottleneck that high modulus, high conductivity and heat resistance of traditional aluminum alloy are difficult to consider at the same time is effectively solved.

The application relates to a high-strength high-toughness high-heat-resistance Mg-Al-RE series die-casting magnesium alloy and a preparation method thereof, the weight percentage of each component in the alloy is as follows: Al: 4.5-6%; La: 4.5-6%; Mn: 0.2-0.5%; Sn: 0.02-0.1%; Be: 0.002-0.02%; the total amount of other impurities is less than or equal to 0.3%, and the balance is Mg; and the above elements also need to simultaneously satisfy: 0 < Al-(0.7La+2Mn) < 1.2. Compared with traditional die-casting magnesium alloys (such as AZ91D, AM60, AE44 and the like), the alloy has the characteristics of high strength, high toughness and high heat resistance, and the yield strength, elongation and creep performance can exceed those of A380 die-casting aluminum alloy; in addition, the alloy also has good die-casting performance, and greatly expands the application scenarios of the die-casting magnesium alloy.

The invention discloses an AlCrN / TiSiN / AlCrTiSiON pre-oxidation multilayer composite coating and a preparation process thereof, belonging to the technical field of coatings. The bottom layer of the composite coating is an AlCrN transition layer, and an AlCrN / TiSiN nano multilayer film and a TiSiN high-hardness layer are sequentially stacked for 1-4 times on the transition layer; The outermost layer is a compact AlCrTiSiON pre-oxidation coating, wherein the AlCrTiSiON pre-oxidation coating has excellent wear resistance and heat resistance. The coating is prepared by adopting an arc ion plating technology. The invention prepares the pre-oxidation coating with high hardness, high wear resistance and high heat resistance through process design and optimization of coating structure and pre-oxidation layer process parameters.

The invention belongs to the technical field of nylon materials, and particularly relates to a high-heat-resistance halogen-free flame-retardant nylon material and a preparation method thereof. According to the invention, PA6 and PA66 base materials are compounded by utilizing the high heat resistance of PA66 and the processability advantage of PA6, and the heat deformation temperature of the material is improved through the synergistic effect of the modified glass fiber reinforcing agent and the antioxidant, so that the heat-resistant requirements of high-end scenes such as new energy automobile battery components and high-temperature electronic components are met. Halogen flame retardants are completely abandoned, the modified halogen-free flame retardant is adopted, the flame retardant effect is achieved, meanwhile, no harmful halogen hydride gas or dioxin is released during combustion, and the material still keeps excellent rigidity and toughness on the basis of high flame retardance and high heat resistance and is suitable for popularization and application. The problem that the mechanical property of a traditional halogen-free flame retardant is reduced due to high addition amount is solved.

The invention discloses a diesel engine piston material, a diesel engine piston casting method and a diesel engine piston, and relates to the technical field of composites.The diesel engine piston material comprises, by weight, 12.0%-12.5% of Si, 5.6%-5.8% of Cu, 3.0%-3.4% of Ni, 0.1%-0.3% of Mg, 0.1%-0.3% of Mn, 0.4%-0.6% of Fe, 0.10%-0.14% of Ti, 0.10%-0.14% of V, 0.10%-0.14% of Zr, 0.02%-0.06% of Cr and the balance Al and alkali metal impurity elements. The high-strength and heat-resistant aluminum alloy material special for the diesel engine piston is obtained by taking the aluminum alloy as a base body and coordinating multiple alloy elements and accurately regulating and controlling the proportion of all the alloy elements, the material meets the long-term service requirements of the high-load diesel engine piston at the high temperature of 350 DEG C and under the explosion pressure of 20 Mpa of 107 times or above high-frequency reciprocating loads, and the service life of the high-load diesel engine piston is prolonged. And the working conditions of high detonation pressure and thermal load of the diesel engine piston are met, so that the high-temperature mechanical property, long-term service reliability and safety stability of the piston are improved.

The invention provides a low-dielectric resin composition, a metal-clad laminate as well as a preparation method and application of the metal-clad laminate, and relates to the technical field of copper-clad plates. The low-dielectric resin composition is prepared from the following components in parts by weight: 60 to 120 parts of functionalized acenaphthene, 60 to 120 parts of polycyclic aromatic compound containing unsaturated carbon-carbon double bonds, 5 to 15 parts of flame retardant, 80 to 150 parts of filling material, 5 to 12 parts of flexibilizer, 10 to 30 parts of cross-linking agent and 0.2 to 3 parts of initiator. The metal-clad plate material in the circuit board prepared from the low-dielectric resin composition has excellent properties of low dielectric property and high heat resistance, heat resistance and mechanical property, and is suitable for manufacturing a high-frequency and high-speed printed circuit board (PCB).

The invention relates to the field of building materials, in particular to a high-brightness heat-resistant ABS plate as well as a preparation method and application thereof. The high-brightness heat-resistant ABS plate is prepared from the following raw materials: ABS resin, copolymer resin, a functional composition, a filling material, a dispersing agent, an antioxidant and the like. According to the present invention, the finally prepared ABS plate can maintain excellent mechanical properties, and can maintain excellent high brightness and high heat resistance during the long-term application process, such that the problem that the surface gloss and the high temperature resistance cannot be effectively considered due to the raw material composition problem of the existing functional ABS plate can be avoided; meanwhile, the properties such as damp and heat resistance and mechanical strength of the ABS plate can be effectively improved, the comprehensive performance requirements of the existing field on the ABS plate are met, and the ABS plate has wider application potential.

The invention discloses a porous medium combustor adapting to a high gas velocity condition, relates to the technical field of combustors, and solves the problems that the porous medium combustor is large in fluid resistance, limited in combustion reaction area and low in heat recycling efficiency at a high gas velocity. A porous medium layer is arranged in a metal shell, a fuel premixing cavity is formed in the center of the porous medium layer, and the upper end of the fuel premixing cavity is closed; a flue gas channel is formed between the porous medium layer and the side wall of the metal shell; a diluent channel is embedded in the side wall of the metal shell and is communicated with the flue gas channel; the porous medium layer comprises a first-stage heat resistant layer, a second-stage ordered structure combustion layer and a third-stage heat recovery layer; and a telescopic ignition electrode is arranged at the bottom of the secondary ordered structure combustion layer. A radial flow structure and an ordered pore material are adopted, the pore Reynolds number of a porous medium is reduced by expanding the flow section area of the unit combustion chamber volume, a combustion reaction area is expanded, the wide stable combustion limit range can be achieved under the high gas speed condition, and thermo-acoustic oscillation is restrained.

The invention relates to the technical field of polymer composite films, and particularly discloses a high-heat-resistance PFA / PTFE composite film and a preparation method thereof. The preparation method comprises the following steps: carrying out ball milling on polytetrafluoroethylene (PTFE), a modifier and a wetting agent at room temperature to obtain modified PTFE; then adding the modified PTFE and fusible polytetrafluoroethylene (PFA) granules into a torque rheometer for blending, extruding at the temperature of 350-380 DEG C and the rotating speed of 100-150rpm, and driving polytetrafluoroethylene fibrillated fragments and a PFA melt to generate semi-molten entanglement in a high shear field, so that the polytetrafluoroethylene and the PFA form a mutual coating structure, chain segment slippage is effectively inhibited, and split-phase crystallization is eliminated; and finally, carrying out hot pressing to prepare the PFA / PTFE composite film. The preparation method eliminates macroscopic phase separation, keeps the stability of mechanical properties while improving the heat resistance of the material, and is suitable for manufacturing high-reliability cable insulation and nuclear-grade sealing elements.

A fireplace comprises a firebox having a combustion chamber, a front opening allowing viewing within the combustion chamber, a back wall, and a combustion region between the front opening and the back wall adapted to provide a flame. A non-homogeneous, heat-resistant, printed multi-color ink image is located on the back wall of the firebox. The image is visible through the front opening and combustion region when the flame is provided in the combustion region of the firebox.

The invention relates to a heat shield (1) for use in devices and apparatuses operated with batteries, in particular for electric cars, wherein the heat shield (1) is constructed at least from a layer (4) that absorbs impacts, a heat protection layer (5) made of a highly heat-resistant material, optionally a gas-tight heat distribution layer (8) and a layer (6) with expansion properties, and support plates (7) for each of the layers for shielding.

The application discloses an alloy cushion block for a large walking beam heating furnace and a preparation method thereof, and the preparation method comprises the following steps: S1, determining the melting point of the alloy cushion block based on the atomic penetration depth of an alloy B containing FeO on multiple different alloy A with a melting point higher than that of the alloy B; S2, studying the load-bearing condition of the alloy cushion block to determine the required compressive strength; S3, designing the composition of the alloy cushion block; and S4, carrying out the industrial design of the alloy cushion block and starting smelting. Through reasonable alloy composition and production process design, the application provides a high-temperature heat-resistant alloy cushion block, improves the strength and melting point of the alloy cushion block, enables the alloy cushion block to maintain high strength at high temperature, solves the problem of FeO bonding in a molten state, reduces the phenomenon of heating furnace nodulation, and has universality and is suitable for various casting processes.

The invention discloses a preparation method of a heat-resistant AlCuNiZrTi alloy for additive manufacturing, and belongs to the technical field of metal additive manufacturing. The AlCuNiZrTi aluminum alloy powder comprises, by mass, 1-3% of Ni-Ti powder (the mass ratio of Ni to Ti is 1: 1), 0.5-1% of Zr powder and the balance 2219 aluminum alloy powder, the AlCuNiZrTi alloy powder is prepared through an in-situ synthesis method, and SLM forming is carried out. By introducing the Ni, Ti and Zr elements, the serious hot crack problem of the 2219 alloy in the selective laser melting additive manufacturing process is eliminated, meanwhile, the stability and mechanical property of the alloy in the high-temperature environment are improved, then the novel high-strength and heat-resistant aluminum alloy is obtained, and huge potential is shown in various high-temperature applications of SLM forming AlCuNiZrTi alloy.

The utility model provides a heat-resistant multi-strand photovoltaic control cable, which relates to the technical field of photovoltaic control cables and comprises a plurality of cable bodies. When the photovoltaic control cable is used, the inner ring sleeve is arranged on the outer surface layer of the multi-strand photovoltaic control cable, so that the temperature generated in the working process of the interior of the multi-strand photovoltaic control cable can be transmitted to the outer ring sleeve through the inner ring sleeve, the contact surface with air can be increased by the outer ring sleeve and the annular pile cooling fins arranged on the outer ring sleeve and the surface of the outer ring sleeve, and the heat in the multi-strand photovoltaic control cable can be relieved; meanwhile, the space between the inner ring sleeve and the outer ring sleeve is partitioned into a plurality of cavities by a plurality of supporting blocks, and the plurality of cavities are communicated by a plurality of through holes to form a heat insulation layer, so that the internal temperature of the multi-strand photovoltaic control cable is prevented from being increased when sunlight directly irradiates the control cable, and the internal temperature of the multi-strand photovoltaic control cable has a relatively good heat-resistant effect; and the stability of the heat-resistant multi-strand photovoltaic control cable is improved.

A composite liquid guide cotton for a vaporizer includes: at least one heat resistant layer, at least one first isolation layer, at least one rapid liquid guide layer, and at least one second isolation layer that are stacked in sequence. The heat resistant layer contacts a heating body and comprises a high-temperature resistant material. A liquid guide rate of the rapid liquid guide layer is higher than a liquid guide rate of the first isolation layer and the second isolation layer.

A family of propylene-ethylene copolymers have been discovered can be readily utilized in high heat resistance applications and form adhesives with improved mechanical strength and heat resistance. More particularly, the propylene-ethylene copolymers have a particular propylene content, triad tacticity, Ring and Ball softening point, and crystallinity that provide copolymers that exhibit desirable high heat resistance, tensile strength, and elongation. Furthermore, the propylene-ethylene copolymers may be used to produce adhesives that exhibit excellent heat resistance characteristics and superior cohesive strength.

The invention belongs to the technical field of fuel cells, and particularly relates to a sealing material for a damp-heat-resistant hydrogen fuel cell and a preparation method of the sealing material for the damp-heat-resistant hydrogen fuel cell. 5 to 30 parts of amorphous polyester; 10 to 20 parts of epoxy resin; 1 to 5 parts of a polyhydroxyalkene oligomer; 0.5 to 3.0 parts of a closed type cross-linking agent; 10-20 parts of an inorganic filler; 0.5 to 1.0 part of an anti-hydrolysis agent; 0.5 to 2.0 parts of an antioxidant; and 0.5 to 2.0 parts of a coupling agent. The sealing material has good initial adhesiveness and final adhesiveness, and excellent resistance to damp-heat deterioration.

Multilayer films are disclosed. The multilayer film may include a core layer and a heat seal layer where the heat seal lay comprises a polypropylene copolymer and a polyethylene copolymer. The polypropylene copolymer of the heat seal layer has specific properties such as ethylene content and iCCD elution profile to contribute to the desirable properties of the film. The multilayer film can form effective heat seals, even when in contact with heated contents. The multilayer film can be formed into a bag where the bag is suitable for carrying hot or heated contents.

Provided is a connection element comprising a tubular first part with a first ring-shaped connection face for connection with a highly heat resistant steel pipe and a tubular second part with a second ring-shaped connection face for connection with a first ferritic steel pipe; wherein the first part is of a corrosion resistant steel material and wherein the second part is of a ferritic steel material; wherein the first and second parts are in one-piece and formed such that a passage between the first and second ring-shaped connection faces is formed; and wherein the first and second parts are produced by an additive manufacturing process. Further provided are a pipe arrangement and a heat exchanger.

A food packaging material and a method for manufacturing the same are provided. The food packaging material includes a cast polypropylene layer, a heat resistant layer, and a middle layer. The middle layer is disposed between the cast polypropylene layer and the heat resistant layer. A material of the cast polypropylene layer includes a first propylene copolymer. A material of the heat resistant layer includes a propylene homopolymer, a petroleum resin, and an inorganic filler. A material of the middle layer includes a second propylene copolymer. A melting point of the heat resistant layer is higher than a melting point of the cast polypropylene layer. The melting point of the cast polypropylene layer is higher than a melting point of the middle layer.

An improved portable cooking shield for enclosing a cooking device is presented. The portable cooking shield features a plurality of heat-absorbing side panels in an extended spaced-apart relationship and being pivotally coupled by collapsible support hinges. Heat resistant handles are provided for lifting the shield and for compressing the plurality of side panels into a flattened position. An upwardly extending lighting device port is provided for accommodating at least one lighting device for the cooking device.

An austenitic heat resistant alloy member having a chemical composition including, in mass %: C: 0.010 to 0.150%, Si: 2.00% or less, Mn: 2.00% or less, P: 0.0400% or less, S: 0.0100% or less, Cr: 20.00 to 28.00%, Ni: 35.00 to 50.00%, W: 4.00 to 10.00%, Ti: 0.01 to 1.20%, Nb: 0.01 to 1.00%, N: 0.0200% or less, Al: 0.010 to 0.300%, B: 0.0005 to 0.0400%, O: 0.0100% or less, and the balance: Fe and impurities, and satisfies 97.50≤(Cr+W+Fe+Ni)−(CrER+WER+FeER+NiER) and −2.2×10−5×t3+2.1≤D.

Process to manufacture an insulating laminate composite structure comprising the following steps: a. provide a laminate composite structure precursor (7) comprising the following layers on a first layer (1) made of a fiber fabric in the following order; - a second layer (2) made of a material having a thickness below 0.3 mm, said material having a melting point higher than 200°C and said layer having an air porosity below than 5 cm3 / sec measured according to ASTM 737, -a third layer (3) made of microporous layer comprising metal oxide having a density between 100-450 g / m3 - a fourth layer (4) comprising a mica paper having a thickness below 0.3 mm, - optionally a fifth layer (5) is present, said layer is made of fiber fabric, said laminate composite structure precursor being sewed with a heat resistant yarn (6); b. impregnate the layer or the layers made of a fabric with a matrix precursor material before or after shaping the laminate composite structure precursor, c. press and cure the laminate composite structure.

The invention provides an anti-arc light, flame-retardant and heat-resistant aramid electric welding protective glove and a preparation method thereof. The arc-light-resistant, flame-retardant and heat-resistant aramid electric welding protective gloves are prepared by preparing a glove outer layer from yarn fibers impregnated with functional slurry and composite yarns coated with glass fibers, taking gray cloth coated with the functional slurry as a middle lining cloth layer and taking a glove blank layer woven by the yarns as an inner layer. Wherein the adopted functional slurry comprises the following components in parts by weight: 0.1-15 parts of an anti-arc light material, 0.1-10 parts of a flame-retardant material, 0.1-10 parts of a heat-resistant material, 20-36 parts of an adhesive, 1-1.5 parts of a cross-linking agent, 4-6 parts of a penetrant and 10-20 parts of a solvent. According to the arc light-resistant, flame-retardant and heat-resistant aramid electric welding protective glove, the UPF can reach 1400 or above, the flame-retardant grade is 2-4, the heat-resistant contact grade is 2-3, and the convective heat-resistant grade is 3-4.

The utility model relates to the technical field of cover plate glass processing, in particular to a printing ink adhering device for cover plate glass processing, and solves the problems that a lifting cylinder is easy to damage under a high-temperature environment in the prior art, and the stability and the service life of a lifting structure are influenced. The utility model discloses a printing ink attachment device for cover plate glass processing. The printing ink attachment device comprises a box body, two spraying modules and a movable plate, the moving plate is connected into the box body through a sliding structure and a pushing structure; a guide rod is connected to the center in the box body, lifting grooves are formed in the two sides of the top of the movable plate, bearing plates are slidably connected into the lifting grooves, the bearing plates ascend and descend through heat-resistant mechanical structures, and traditional lifting air cylinders are replaced. By adopting a heat-resistant mechanical structure, the heat resistance and the stability of the lifting mechanism are improved, and the service life of the lifting mechanism is prolonged.

The application discloses a high-weather-resistance and high-heat-resistance ASA high-rubber-powder impact modifier and a preparation method thereof, and belongs to the technical field of high polymer materials.The preparation method of the high-weather-resistance and high-heat-resistance ASA high-rubber-powder impact modifier comprises the following five steps: preparing a seed emulsion, preparing a core layer emulsion, shell layer graft copolymerization, preparing ASA powder and hot blending.The impact strength of the high-weather-resistance and high-heat-resistance ASA high-rubber-powder impact modifier is 25.8-27.8 kJ / m 2 , the Vicat softening temperature is 109.5-114.8 DEG C, the impact strength after weather resistance test is 24.4-26.9 kJ / m 2 , and the amplitude of the decrease of the impact strength before and after the weather resistance test is 1.92-8.55%.

The utility model provides an integral forming inductance of impact resistance and heat resistance, include: split type magnetic core structure, sectional type winding subassembly, composite insulating layer, elastic buffer layer, metal alloy shell, heat conducting medium filling layer, positioning clamping groove, reinforcing flange, high temperature resistance pin, sealing colloid, stress dispersion groove, temperature response coating, split type magnetic core structure is by upper magnetic core body a, lower magnetic core body b and magnetic gap adjusting component c is composed, the upper magnetic core body a and lower magnetic core body b are engaged through mortise and tenon structure, magnetic gap adjusting component c is detachable ceramic sheet, elastic buffer layer is by silicon base elastomer and carbon fibre braided layer alternative superposition constitutes. The utility model discloses three big core technologies of split type magnetic core dynamic regulation, three -level buffer energy absorption, gradient heat conduction insulation, solves the pain point such as temperature rise runaway, mechanical failure, parameter solidification of traditional inductance under extreme environment, especially applicable to the field of harsh reliability requirement such as aerospace power supply, high orbit satellite load, new energy automobile electric drive system.

A crash-protected memory unit (100) for a flight recorder comprises: an electronic memory (110), configured to store data; an active casing (120), configured to encase the electronic memory (110), and comprising a heat absorption material (125), adapted to absorb heat by undergoing an endothermic chemical process, thereby providing an active thermal insulation of the electronic memory (110); and a passive casing (130), configured to encase the active casing (120), and comprising a heat resistant material (135) for providing a passive thermal insulation for the electronic memory (110).

The invention discloses a PC / PPSU alloy, which comprises the following components by weight: 23-55% of PPSU, 43-75% of PC, 0-3% of an auxiliary agent, and 0-15% of a filler, the weight-average molecular weight of PPSU is 20000-80000, and the molecular weight distribution width is 1.6-2.2; the melt index of the PC is 1-35 g / 10 min, and the condition is that the temperature is 300 DEG C and the weight is 1.2 kg. Through combination of PPSU and PC with specific contents, the PC / PPSU alloy has the characteristics of scratch resistance and high heat resistance of PPSU, and the defect that white lines are easily generated on the surface of an injection molded part due to poor processability of the PC / PPSU alloy can be improved.