42results about How to "Good self-supporting performance" patented technology

Provided is a thermoelectric conversion device which is highly self-supportive, is highly installable, and is easily installable in heat sources of various shapes. The thermoelectric conversion deviceis equipped with an insulating substrate, a plurality of thermoelectric conversion layers positioned on the principal surface of the insulating substrate with a pre-set interval interposed therebetween, and a plurality of wiring members positioned on the principal surface of the insulating substrate so as to sandwich each of the thermoelectric conversion layers. The thermoelectric conversion device also has: a bellows-shaped module band formed in a bellows structure by alternately folding upward and folding downward, and having a plurality of through-holes formed in each of a plurality of plate-shaped sections formed by the bellows-shaped folding of the insulating substrate; and a linear member that passes through the plurality of through-holes and transects the plurality of plate-shapedsections.

The invention relates to a manufacturing method of a high-performance composite carbon fiber insulation board. After mixing carbon fibers composed of chopped carbon fibers and ground carbon fibers, organic binders and solvents, the solvent is removed, and the surface is coated with the organic binders. The composite carbon fiber is mixed with water and dispersant to form a carbon fiber mixed slurry, which is formed into a composite carbon fiber thermal insulation board pre-product by vacuum suction; dehydrate it by heating with hot steam or hot air, and complete the insolubilization and insolubilization treatment; then After carbonization or graphitization treatment, the finished composite carbon fiber thermal insulation board is obtained. The composite carbon fiber thermal insulation board prepared by the invention has the characteristics of good heat insulation performance, good oxidation resistance, low heat capacity and high strength, and the production process is simple, the cost is low, the shape and size of the finished product are controllable, and the density is adjustable; the finished product is not easy to Cracking, good self-support, long service life; after surface treatment, it can also have excellent anti-oxidation performance, and further improve the service life.

The invention provides the application of 3D printing in cross-linked polyimide, the preparation of porous polyimide, and the preparation of polyimide composite material, and belongs to the technical field of 3D printing and intelligent manufacturing. The invention uses the direct writing 3D printing technology for the cross-linked polyimide, and can simply prepare the cross-linked porous polyimide with good heat resistance, excellent dimensional stability, abundant pores and controllable pore size; It is used to prepare polyimide composite materials. The prepared polyimide composite materials have the characteristics of excellent thermal performance, good dimensional stability and complex shape, and the process is simple, and can manufacture polyimide with diversified shapes. composite material.

The invention relates to a sound producing device comprising a signal input device and a sound producing component, wherein the sound producing component is electrically connected with both ends of the signal input device, the sound producing component is a carbon nano tube film comprising a plurality of carbon nano tubes which are mutually wound, the signal input device inputs an electric signal to the carbon nano tube film, and therefore, surrounding gas media are heated by the carbon nano tube film to generate sound waves. The sound producing device can be used for soundable devices, such as earphones, sound boxes, radios, and the like.

The invention relates to a pitch-based carbon fiber nonwoven felt insulation board and a manufacturing method of the pitch-based carbon fiber nonwoven felt insulation board. The pitch-based carbon fiber nonwoven felt insulation board comprises a pitch-based carbon fiber nonwoven felt insulation board main body which is a plate obtained by cutting, laminating, forming, curing, carbonizing / graphitizing pitch-based carbon fiber nonwoven felt after being mixed with a mixed liquid of an organic binder and a solvent, and the pitch-based carbon fiber nonwoven felt is obtained by carrying out spinning, preoxidation and carbonization on pitch. Carbon material binder layers and graphite paper / carbon fiber sheets are in sequence arranged on the main body and the lower surfaces of the pitch-based carbon fiber nonwoven felt insulation board from inside to outside, and a finished product is cured and carbonized. Compared with the prior art, the invention has the benefits that (1) thermal insulation and heat insulation properties are good; (2) the density is 0.1-0.4 g / cm<3>, the strength is high and the self-supporting property is good, (3) oxidation and air flow scouring are resisted because surface treatment is carried out to facilitate a long service life; (4) the process is simple, the production cost is low, the thickness can be decided once, and the product is not easy to crack and good in stability.

The invention discloses a preparation method of an oxygen evolution catalyst based on a metal organic framework material. The method grows metal-organic framework material MIL-53(Fe) with lamellar structure on nickel foam by a simple hydrothermal method, and then uses a three-electrode system to deposit a layer of Ni-S thin film on MIL-53(Fe). . The method of the invention is simple, the raw material cost is low, and is beneficial to industrial production, and the metal-organic framework MIL-53(Fe) / Ni-S composite catalyst is effectively controlled and synthesized under relatively mild conditions. The catalyst has good self-supporting ability, high-efficiency oxygen evolution activity and good catalytic stability.

The invention discloses a carbon nano-tube network / polymer composite material. The carbon nano-tubes are mutually tangled to form a network structure, wherein the outer surface of the carbon nano-tube is uniformly wrapped with a polymer, and the carbon nano-tube and the polymer are all independently existed in a non-aggregated state. Compared with the prior art, the carbon nano-tube is existed in a non-aggregated state and the polymer is existed in a non-enriched state; by adopting the carbon nano-tube network / polymer composite material, the shortcomings of the traditional carbon nano-tube composite material such as the agglomeration of the carbon nano-tubes and the low content are solved, meanwhile, the excellent mechanical property, electrical property and thermal property of the carbon nano-tube are kept, and the carbon nano-tube is excellent in self-supporting property and is easy to process in the using process and has a wide application future in the fields such as the electromagnetic shielding materials, functional intelligent materials and electrode materials.

The invention relates to a manufacturing method of a high-performance composite carbon fiber heat preservation cylinder. After mixing carbon fibers composed of chopped carbon fibers and ground carbon fibers, organic binders and solvents, the solvent is removed, and the surface is coated with the organic binders. The composite carbon fiber is mixed with water and dispersant to form a carbon fiber mixed slurry, which is formed into a composite carbon fiber thermal insulation cylinder pre-product by vacuum suction; dehydrate it by heating with hot steam or hot air, and complete the insolubilization and insolubilization treatment; then After carbonization or graphitization treatment, the finished product of the composite carbon fiber heat preservation cylinder is obtained. The composite carbon fiber thermal insulation cylinder prepared by the invention has the characteristics of good heat insulation performance, good oxidation resistance, low heat capacity and high strength, and the production process is simple, the cost is low, the shape and size of the finished product are controllable, and the density is adjustable; the finished product is not easy to Cracking, good self-support, long service life; after surface treatment, it can also have excellent anti-oxidation performance, and further improve the service life.

The invention relates to an audible device, which comprises a signal input device and an audible element in electric connection with two ends of the signal input device, wherein at least part of the audible element is arranged on the surface of a support structure; the audible element is a carbon nano tube thin film which comprises a plurality of mutually wound carbon nano tubes; and electrical signals are input to the audible element by the signal input device and the carbon nano tube thin film heats ambient gas media to sound acoustic waves. The audible signal can be used in soundable devices such as earphones, sound boxes and radios.

The invention provides a dry electrode film preparation device and its battery production line, including a preforming mechanism for preforming the mixed raw materials into a self-supporting semi-finished dry electrode film and a preforming mechanism for rolling the semi-finished dry electrode film It is the rolling mechanism of the finished dry electrode film. The preforming mechanism includes a conveying workbench, a material distributing mechanism and a compacting mechanism arranged above the conveying workbench. The rolling mechanism corresponds to the discharge end of the conveying workbench, and the material distributing mechanism is close to the The feeding end of the conveying table is used to flatten the raw material into a raw material layer; the compacting mechanism is provided with a compacting surface corresponding to the table surface of the conveying table, used for compacting the raw material layer. The raw material is preformed into a self-supporting semi-finished dry electrode film by the preforming mechanism, and then rolled by the calendering mechanism, so that the electrode film is not easy to be broken during production, and the required dry product can be achieved without multiple rolls. The thickness of the electrode film.