133 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.

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 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.

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.

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.

This utility model discloses a high-temperature resistant aluminum core conductor, including a protective structure. An outer sheath is installed inside the protective structure, and a high-temperature resistant structure is installed inside the outer sheath. The high-temperature resistant structure includes an insulating layer inside the outer sheath, an anti-tensile rope inside the insulating layer, a main body installed on one side of the anti-tensile rope, a heat-resistant aluminum alloy round wire installed on the outside of the main body, a steel core installed in the middle of the main body, and an annealed aluminum strip on the outer wall of the steel core. When the heat-resistant aluminum alloy round wire is wrapped around the main body, the heat-resistant aluminum alloy round wire has excellent heat resistance, forming a heat-resistant protective layer that effectively blocks the direct impact of external high temperatures on the aluminum main body. This helps maintain the stability and reliability of the main body in high-temperature environments, extending its service life. The anti-tensile rope outside the main body can absorb and disperse stress, preventing conductor damage or breakage.

The application belongs to the field of polymer materials, and more particularly relates to low-smoke fireproof heat-resistant aluminum foil reinforced polyolefin foam, a preparation method and application. The aluminum foil reinforced polyolefin foam comprises polyolefin foam and an aluminum foil structure arranged on the surface of the polyolefin foam; the polyolefin foam is foamed by polyolefin resin, a flame retardant, a foaming agent, an adhesive and an auxiliary agent; the aluminum foil structure comprises an aluminum foil layer; the flame retardant comprises phosphorus elements, nitrogen elements and bromine elements, wherein the sum of the phosphorus elements and the nitrogen elements accounts for 60wt%-80wt% of the total mass of all flame-retardant elements, the bromine elements account for 15wt%-30wt% of the total mass of all flame-retardant elements, and the mass ratio of the phosphorus elements to the nitrogen elements is less than or equal to 3:1. By adjusting the proportions of the bromine elements, the phosphorus elements and the nitrogen elements in the flame retardant, the flame-retardant elements can play a synergistic flame-retardant role, and the aluminum foil reinforced polyolefin foam with low smoke, fireproof and heat-resistant properties is obtained.

The application relates to the paint technology field and discloses a high-temperature-resistant paint and a preparation method thereof. Epoxy resin, a filler, a dispersing agent and a defoaming agent are added into a solvent, a curing agent is added after stirring, and the high-temperature-resistant paint is obtained. The curing agent is composed of a polyamide curing agent and UPy diamino diphenyl sulfone; UPy structure forms stable quadruple hydrogen bond action in the molecular chain bond of the epoxy resin, the crosslinking density of the epoxy resin is improved, when the epoxy resin is stressed, the quadruple hydrogen bond can be broken by absorbing energy at the same time, stress can be consumed and energy can be transmitted, the paint curing product is not damaged by stress, has good toughening effect, and the toughness of the paint film is improved. The heat-resistant diphenyl sulfone structure is introduced into the molecular chain of the epoxy resin, the high-temperature-resistant performance of the paint is improved, and the paint has higher thermal decomposition temperature.

The present invention provides a phosphorus-containing compound having the following formula (I): wherein R1, R2, R3, R4, R17, R18, R19, and R20 are as defined in the specification. The phosphorus-containing compound can improve the heat resistance and flame resistance of an application target, and is thus particularly suitable for the technical field of printed circuit boards.

The application provides a heat-resistant porous melt-blown material and a preparation method thereof, and comprises the following steps: S1: dissolving PLLA and PDLA in a DMC solvent, sufficiently dissolving, and then evaporating the DMC solvent to obtain a filter cake, and drying the filter cake to obtain SC crystal micro-powder; S2: mixing the SC crystal micro-powder, PLLA and a composite foaming agent, and then performing melt blending and granulation to obtain melt-blown master batches; and S3: performing melt-blown treatment on the melt-blown master batches to obtain the heat-resistant porous melt-blown material, high-efficiency preparation and uniform dispersion of SC crystals are realized under a low PDLA addition amount, meanwhile, the processability of the melt-blown process is considered, and the heat resistance of the material matrix and the structural thermal stability are synergistically improved.

The invention belongs to the technical field of corrugated pipe manufacturing, and particularly relates to a heat-resistant enhanced HPPM square high-voltage-resistant electric corrugated pipe. Ethylene blocks are introduced in the polymerization stage, the crystallinity of polypropylene is reduced, the toughness and elasticity of the prepared polypropylene powder are improved, polar silica groups are introduced through grafting of the coupling agent KH151 and active groups of the polypropylene powder, the compatibility of polypropylene and a polar nano toughening material is improved, and the heat resistance of polypropylene is improved; according to the nano toughening material, zinc stannate serves as an inner core, niobium modified titanium dioxide serves as an outer layer, niobium is doped, lattice distortion is enhanced, the electron mobility of the outer layer is reduced, dielectric loss is reduced, meanwhile, the heat conductivity is improved, internal heat is more easily dissipated, and the direct current breakdown phenomenon caused by charge accumulation is relieved. The prepared heat-resistant enhanced HPPM square high-voltage-resistant electric corrugated pipe can meet the application requirement of being free of aging and fracture in long-time high-temperature service.

The invention belongs to the technical field of composite materials, and provides a heat and humidity resistant PEEK composite material and a preparation method thereof, the heat and humidity resistant PEEK composite material comprises the following raw materials by weight: 85-110 parts of PEEK; 5 to 15 parts of polytetrafluoroethylene; 5 to 15 parts of carbon fiber; 5 to 10 parts of modified montmorillonite; 0.5 to 2 parts of a compatilizer; and 0.1 to 0.5 part of an antioxidant. The preparation method comprises the following steps: putting PEEK and polytetrafluoroethylene into a drying oven for drying, then adding the dried PEEK and polytetrafluoroethylene, carbon fibers, modified montmorillonite and an antioxidant into a high-speed mixer for mixing, and uniformly mixing to obtain a mixture; the preparation method comprises the following steps: mixing the raw materials, adding the mixture into a double-screw extruder, extruding and granulating, cooling, and drying to finally prepare the PEEK composite material, while maintaining excellent friction resistance and mechanical properties, the heat and humidity resistance is obviously improved, and the PEEK composite material has a wide application value.