13results about How to "Heat resistant" patented technology

The utility model discloses a kind of heat-insulated fireproof doors, comprising: door frame and two groups of fireproof door panels, two groups of fireproof door panels are fixedly installed with heat insulation layer between, heat insulation layer one end is provided with installation port, installation port is fixedly installed with door gap plugging mechanism, and the plugging end of door gap plugging mechanism extends from the gap between two groups of fireproof door panels, and two groups of fireproof door panels are rotatably installed in door frame, and then make door gap plugging mechanism can extend from between fireproof door panel and touch on the inner wall surface of door frame.The application is designed by door gap plugging mechanism, so that it passes through the double protection mechanism of " primary sealing + automatic plugging", first by fireproof door panel and spacer plate form preliminary blocking, then utilize zirconium fibre composite felt to automatically expand and fill gap when fire, substantially delay the speed of high-temperature dense smoke diffusion to indoor, and gain more escape time for personnel.

The present application relates to a separator for nonaqueous secondary batteries and a nonaqueous secondary battery. A separator for nonaqueous secondary batteries, which has a porous substrate and a heat-resistant porous layer provided on one side or both sides of the porous substrate, the heat-resistant porous layer containing a polyvinylidene fluoride-based resin A, a polyvinylidene fluoride-based resin B, and a filler, the polyvinylidene fluoride-based resin A being a polyvinylidene fluoride-based resin containing a tetrafluoroethylene unit, the polyvinylidene fluoride-based resin B being a polyvinylidene fluoride-based resin other than the polyvinylidene fluoride-based resin A, the polyvinylidene fluoride-based resin B being a homopolymer of vinylidene fluoride or a copolymer of vinylidene fluoride and a monomer other than tetrafluoroethylene, the average primary particle diameter of the filler included in the heat-resistant porous layer being 0.01 to 0.5 µm.

This invention discloses a hot melt adhesive for high-temperature protective clothing and its preparation method, comprising the following raw materials: Fischer-Tropsch wax, styrene-isoprene-styrene block copolymer with 0% diblock content, styrene-isoprene-styrene block copolymer with 20-30% diblock content, styrene-isoprene-styrene block copolymer with 40-50% diblock content, rosin resin, petroleum resin, ethylene-vinyl acetate copolymer, and antioxidant. This hot melt adhesive requires no toxic solvents, possesses both heat resistance and water resistance, and is suitable for high-temperature protective clothing. The preparation method of this hot melt adhesive involves heating and mixing polymer materials without adding any solvents or toxic substances during the preparation process, reducing the risk of toluene poisoning, completely solving the problems of solvent evaporation and recovery, and, more importantly, eliminating safety hazards in the storage and use of organic chemicals, achieving environmentally friendly, safe, and efficient production.

This invention provides a water-based coating for anti-slip and heat-resistant bamboo mats. The coating comprises a water-based penetrating primer layer, a water-based colored topcoat layer, a water-based water-resistant and heat-resistant coating, and a water-based anti-slip and wear-resistant coating. These four layers are sequentially applied to a bamboo substrate. This invention consists of four coating layers, which, when applied to a bamboo substrate, endow the bamboo product with excellent anti-slip, wear-resistant, water-resistant, and heat-resistant properties.

The invention relates to the technical field of lithium ion batteries, in particular to a high-temperature-resistant electrolyte and a lithium ion battery. The high-temperature-resistant electrolyte comprises a lithium salt, an organic solvent, a film-forming additive and a high-temperature-resistant additive; based on the total mass of the high-temperature-resistant electrolyte being 100%, the content of the high-temperature-resistant additive is 1-5%; the high-temperature-resistant additive is selected from a combination of diphenylphosphonyl hydroxylamine and phenylphosphonyl nitrile. The high-temperature-resistant additive is introduced into the high-temperature-resistant electrolyte provided by the invention, so that a stable and compact SEI film can be formed on the surface of a negative electrode, dendritic crystal growth is inhibited, active lithium loss is reduced, meanwhile, a high-temperature-resistant protective layer is generated on the positive electrode side, and the anti-oxidation stability of a positive electrode interface is effectively improved, so that the electrode interface has compactness and heat resistance; and the interface stability at high temperature is obviously improved, so that the battery applying the composite material has excellent high-temperature cycle performance.

The invention discloses a polycarbonate composition as well as a preparation method and application thereof. The polycarbonate composition comprises the following components in parts by weight: a, polycarbonate resin; b parts of amorphous copolyester PCTG; c parts of an inorganic filler; d) a styrene-maleic anhydride copolymer; the polycarbonate resin comprises silicon copolymerized polycarbonate and non-silicon copolymerized polycarbonate, and based on the weight of the polycarbonate resin, the weight percentage of the silicon copolymerized polycarbonate is e; wherein the relation of a, b, c, d and e meets the condition that 100a / (a + b) is greater than or equal to 33; 100c / (a + b) < = 2.5; 3 < = 100d / (a + b) < = 7; and ae / (a + b) > = 0.22. The polycarbonate composition disclosed by the invention has good impact resistance at low temperature below zero on the basis of maintaining a certain light transmittance.

The utility model relates to the technical field of urea production lines, and discloses an energy-saving device on a urea production line, which comprises a mixing drum and a support frame, a second motor is mounted at the bottom of the mixing drum, the output end of the second motor is in transmission connection with a transmission disc, and the bottom of a connecting rod is connected to an upper stirring disc below. Flow guide holes are formed in the upper and lower stirring discs. The first motor is mounted in the middle of the top of the mixing barrel, and the upper stirring disc and the lower stirring disc are connected through the connecting rod, so that the upper stirring disc and the lower stirring disc can be driven to rotate after the first motor works, and the conical block is fixed at the top of the solid area of the lower stirring disc; the conical block can improve the flow guide effect on liquid, so that the flowing effect is improved under the design of the flow guide holes of the upper stirring disc and the lower stirring disc, the overall uniform mixing effect is improved, meanwhile, the conical design of the conical block also facilitates the liquid to be converged to the external flow guide holes, and discharging from the discharging cylinder at the bottom position is facilitated.

The built-in ceramic piece comprises a base and a ceramic piece body, the ceramic piece body is arranged at the top of the base, a plurality of binding holes are formed in the bottom end of the interior of the ceramic piece body, a wear-resisting layer is sprayed on the inner surface of the ceramic piece body, and an anti-deformation layer is sprayed on the outer surface of the ceramic piece body. One end of the base is fixedly sleeved with a reinforcing cover, transverse blocks are arranged on the two sides of the reinforcing cover correspondingly, reinforcing blocks are arranged on the tops of the two transverse blocks correspondingly, a wear-resisting layer, an anti-deformation layer, the reinforcing cover, a screw rod, an anti-skid disc and a suction cup are arranged, a plurality of binding holes are used for fixing a wiring harness terminal, and the wear-resisting layer is made of tungsten alloy; tungsten alloy powder is sprayed to the inner surface of the ceramic piece through spraying, the external force resistance strength of the ceramic piece is improved, the two anti-skid discs are sequentially rotated clockwise, the two screw rods are driven to move downwards, the suction cup moves downwards along with the two screw rods, the bottom face of the suction cup is attracted to the smooth installation face, and then the base can be stably installed on the installation face.

This utility model relates to the field of vacuum coating technology and discloses an observation device and a coating system. The observation device includes a housing, an observation unit, and a blocking unit. By setting the housing, the observation unit, and the blocking unit, the service life of the observation structure can be extended. This allows for the replacement of the observation structure or the second light-transmitting element in the observation unit while performing routine maintenance on the component to be connected. This eliminates the need for multiple shutdowns of the component to be connected to replace the observation structure or the second light-transmitting element during the period between start-up and routine maintenance, as is done in related technologies. The observation device of this utility model can increase the working time of the component to be connected, thereby achieving the technical effects of improving the working efficiency of the component to be connected and saving the usage cost of the component to be connected.

The application discloses a kind of high-temperature-resistant organic / inorganic composite silicon aerogel materials and preparation method thereof, high-temperature-resistant organic / inorganic composite silicon aerogel material includes nitrogen heterocyclic crown ether, MXene and organic silicon resin, its preparation process includes by MAX phase preparation MXene, and MXene is modified with nitrogen heterocyclic crown ether, nitrogen heterocyclic crown ether modified MXene is added to organic silicon resin, and high-temperature-resistant organic / inorganic composite silicon aerogel material is obtained.The high-temperature-resistant organic / inorganic composite silicon aerogel material prepared in the application has excellent high-temperature resistance and heat insulation performance, and can be widely used in 5G base station, semiconductor packaging, aerospace, nuclear industry, high-temperature battery, lightweight automobile and other fields, and has wide application prospect.

The invention provides a rabbit-derived plant lactobacillus strain RLP74, a microbial preparation and a feeding probiotic product, and relates to the technical field of microorganisms. The rabbit-derived plant lactobacillus strain RLP74 has strong tolerance to artificial gastric juice and swine bile salt, the survival rate reaches 76% after the rabbit-derived plant lactobacillus strain RLP74 is treated in the artificial gastric juice with the pH value of 2.5 for 3 h, the survival rate reaches 96% after the rabbit-derived plant lactobacillus strain RLP74 is treated in a swine bile salt-containing solution for 4 h, and the survival rate still reaches 68% after the rabbit-derived plant lactobacillus strain RLP74 is continuously digested by the artificial gastric juice for 4.5 h; the bacterial strain has a Caco-2 cell adhesion rate of 33%, has a certain intestinal colonization capability, and has the capability of removing superoxide anion free radicals and bacteriostatic activity on various pathogenic bacteria such as escherichia coli, salmonella, staphylococcus aureus and the like. Therefore, the strain RLP74 or the microbial preparation thereof can be widely applied to preparation of feeding probiotic products for promoting rabbit growth and improving the survival rate of weaned young rabbits, and has good host adaptability and application prospects.

The application provides a non-fluorine-coated diaphragm, a preparation method thereof, and a secondary battery. The non-fluorine-coated diaphragm comprises a base film and a composite coating layer coated on at least one side of the base film. The composite coating layer comprises a first coating layer and a second coating layer, and the first coating layer is arranged between the second coating layer and the base film. The first coating layer comprises first inorganic particles and second inorganic particles. The second coating layer comprises third inorganic particles and polymer particles. The polymer particles are non-fluorine polymers. The lower surface of the polymer particles is tangent to the first coating layer, and the polymer particles are filled in the second coating layer. When the temperature in the battery cell rises, the non-fluorine-coated diaphragm can effectively block the charging and discharging of the battery cell. When the temperature in the battery cell returns to normal, the swelling of the polymer particles decreases, the coverage of the polymer particles in the composite coating layer decreases, and the battery cell can operate normally again. The non-fluorine-coated diaphragm does not deteriorate the internal resistance and cycle performance of the battery cell, and simultaneously improves the heat resistance of the non-fluorine-coated diaphragm at high temperatures.

This invention belongs to the technical field of industrial magnesium alloy materials, specifically a heat-resistant magnesium alloy with high strength, toughness, high conductivity, and brazability, and its preparation method. By mass percentage, the magnesium alloy comprises: Zn 5.0%–8.0%, Mn 0.5%–1.5%, Cu 0.5%–3.5%, Ag 0.05%–3.5%, Ca 0.01%–1.5%, with the balance being Mg. The magnesium alloy material prepared by the method combined with specific processes has a tensile strength ≥360MPa, elongation ≥10%, conductivity ≥19MS / m, tensile strength ≥200MPa at 200℃, and a tensile strength decrease of ≤10% after brazing at 350–450℃. Furthermore, it can be brazed into complex cavity components integrating load-bearing and conductive functions, enabling service in high-temperature environments up to 200℃. It has significant application value in electronic signal and microwave signal transmission components in aerospace, aviation, transportation, and weaponry fields.