30results about How to "Unique high temperature resistance" patented technology

The invention relates to a stainless steel water meter shell which is cast by using a lost foam process. The fireproof paint of the lost foam comprises 15 parts of zirconite powder, 15 parts of ferrochromium powder, 12 parts of pyrophillite powder, 10 parts of bauxite, 5 parts of magnesium powder, 5 parts of limestone powder, 4 parts of brown emery powder, 1 part of white emery powder, 2.5 parts of lithium-base bentonite, 2 parts of carboxymethyl cellulose, 1 part of palygorskite, 2 parts of sodium silicate, 2 parts of aluminum sulfate, 1.5 parts of VAE (Vinyl Acetateethylene Emulsion), 0.6 part of n-butyl alcohol, 0.2 part of n-caprylic alcohol and 25 parts of water; an energy converter intubation tube with internal and external threads is arranged inside an inclined tube of the water meter shell; and after being inserted, an energy converter is not directly contacted with a water fluid, so that the service life of the energy converter is prolonged and the stainless steel water meter shell has a wide application prospect.

The invention discloses a thick high-conductivity multilayer graphene film and an RFID electronic label of an impedance loaded shape. A graphite film precursor including polyimides, polyamide and oxidized graphene forms a film in a scraping or screen printing method, and a graphene film precursor is prepared by hot press molding at the temperature of 50-180 DEG C; the graphene film precursor is placed in a high temperature furnace, heat treatment at the low temperature of 200-500 DEG C for 1-2 hours, heat treatment at 200-500 DEG C for 2-5 hours and heat treatment at 2000-2800 DEG C for 2-5 hours are carried out on the graphene film precursor successively in a cyclic way, and the graphene film precursor is then cooled for 12 hours slowly; and roll forming is carried out. Compared with a traditional metal material, the prepared RFID electronic label has similar functions, a signal transmission performance is ensured, the label can be produced in large scale to reduce the cost, and unique properties as high temperature resistance, corrosion resistance, flexibility and environmental protection of a graphene material are included.

The invention discloses a preparation method of an aluminum-based composite material applied to a light brake disc. The preparation method comprises the following steps: preparing Al2O3 foamed ceramic by adopting an organic foam dipping method, subsequently adding SiC particles into molten aluminum alloy and uniformly stirring to obtain a SiC particle reinforced aluminum-based composite material prefabricated body, and then allowing the molten prefabricated body to permeate into pores of the Al2O3 foamed ceramic by adopting a high-temperature pressure casting process to obtain an Al2O3 foamed ceramic reinforced aluminum-based composite material containing SiC particles. The surface of the brake disc is prepared from the Al2O3 foamed ceramic reinforced aluminum-based composite material containing the SiC particles. The aluminum-based composite material has unique wear resistance and high-temperature resistance as well as light weight and can preferably meet the requirements on the safety and wear resistance of the brake disc than a cast iron material.

The invention provides a supporting device and a supporting method for a solid rocket engine end face combustion grain, and belongs to the technical field of solid rocket engine manufacturing. The supporting device specifically comprises a combustion chamber and the grain connected in the combustion chamber, and a supporting piece is arranged between the outer surface of the grain and the inner surface of the combustion chamber and comprises a bottom supporting plate and a side supporting plate, wherein the bottom supporting plate is arranged at the head of the grain, the side supporting plateis arranged on the outer side face of the grain, and the bottom supporting plate is not connected with the side supporting plate. By utilization of the supporting device for the solid rocket engine end face combustion grain, integrity of the grain and safety during solid rocket engine running can be guaranteed, meanwhile, the buffering and stress releasing functions are achieved for the grain surface, and the stress situation of the grain can be well improved.

The invention discloses a high-toughness and weather-resistant fiber reinforced plastic photovoltaic scaffold, which comprises the following raw materials by weight: 100-120 parts of an epoxy resin E44, 1-2 parts of dibenzoyl peroxide, 1-4 parts of methyl ethyl ketone peroxide, 2-3 parts of zinc stearate, 1-3 parts of lead tristearate, 20-30 parts of calcium carbonate, and 10-15 parts of titaniumdioxide modified attapulgite. According to the present invention, the titanium dioxide modified attapulgite as the functional filling material is added, and the test results prove that the prepared fiber reinforced plastic has substantially improved toughness and substantially enhanced weather resistance, and can main long-lasting gloss.

The invention discloses a high performance soft magnetic ferrite material. The high performance soft magnetic ferrite material comprises, by weight, 100 parts of main components, 0.001-0.003 parts of auxiliary components and 1-5 parts of assistants. The main components comprise, by mole, 40-50 parts of Fe3O4, 16-20 parts of NiO, 15-20 parts of ZnO, 1-3 parts of CuO, 5-10 parts of MnO2 and 1-2 parts of WO3. The auxiliary components comprises, by weight, 0.5-2 parts of Nb2O5, 1-2 parts of SiO2, 0.5-1.5 parts of Co2O3, 0.5-1.5 parts of Ti2O3, 1-3 parts of La2O3 and 1.5-2.5 parts of chromium boride. The assistants comprise, by weight, 100 parts of modified polyvinyl alcohol, 3-6 parts of polyvinyl butyral, 1-3 parts of barium sulfate, 0.5-1.5 parts of silicone emulsion and 1-3 parts of zinc stearate. The invention also discloses a preparation method of the high performance soft magnetic ferrite material. The preparation method has the advantages of high frequency, high magnetic permeability, high resistivity and simple preparation processes.

The invention relates to a preparation method for an oxidized grapheme erosion-resistant coating attached to iron surface, and belongs to the field of metal material. The preparation method for the oxidized grapheme erosion-resistant coating attached to the iron surface is provided aiming at the disadvantages at present that equipment is corroded and damaged due to ferrous metal corrosion, product quality is reduced, and the environment is polluted, so that economy is damaged. According to the preparation method, composite particles are prepared from oxidized grapheme, zinc powders and nickel powders, then the composite particles are magnetized on the iron surface, and one layer of epoxy resin erosion-resistant coating is coated on the iron surface further. The preparation method can prevent the permeation of water vapor, oxygen, ion and the like, and chemical erosion-resistant performance of metal is improved greatly.

The invention discloses a radio frequency microwave device and a micro nitrogen doped graphene film. The nitrogen doped graphene film is prepared by adopting the following method: polyimide, polyamide and nitrogen doped graphene are printed into a film, and the thickness is controlled to be within 5-100 microns; hot-press forming is performed at a temperature of 50-200 DEG C so as to prepare a graphene film; the acquired graphene film is placed in a graphene high temperature furnace and subjected to heat treatment at a temperature of 200-600 DEG C and a temperature of 2000-3000 DEG C respectively, and finally hot-press forming is performed at a temperature of 50-200 DEG C so as to prepare a flexible graphene film. The radio frequency microwave device is prepared by adopting the nitrogen doped graphene film. Compared with traditional carbon-based materials, the graphene film prepared according to the invention has a high in-plane orientation structure, thus the graphene film is enabled to have excellent conductivity and low plane impedance, and the conductivity of the graphene film can be compared with the conductivity of metal. Meanwhile, the nitrogen doped graphene film has a characteristic of low consumption, can be bent and has the advantages of low cost, simple manufacturing process and ability of being more environment-friendly.

The invention discloses a high-toughness and weather-resistant plastic photovoltaic scaffold, which comprises the following raw materials by weight: 100-120 parts of polyvinyl chloride, 2-5 parts of acalcium-zinc stabilizer, 10-12 parts of CPE, 2-5 of nitrile butadiene rubber, 0.2-0.8 part of paraffin, 0.2-0.6 part of PE wax, 0.2-0.6 part of ACR-P551, 0.2-0.5 part of an antioxidant 1010, 0.2-0.5part of UV531, 2-4 parts of a rare earth stabilizer, and 10-15 parts of a titanium dioxide-attapulgite complex. According to the present invention, the test results prove that the prepared plastic hassubstantially improved toughness and substantially enhanced weather resistance, and can main long-lasting gloss.

The invention belongs to the technical field of biochemical analysis, and concretely relates to a construction method and application of a platinum-shell gold-core nano-enzyme mediated magnetic relaxation sensing signal amplification system. The biosensor is characterized in that gold nanoparticles are synthesized by a microwave synthesis method, Pt@AuNPs nano-enzyme is prepared by platinum deposition on the surfaces of the gold nanoparticles through an oxidation-reduction reaction between ascorbic acid and chloroplatinic acid by taking the gold nanoparticles as a core, the Pt@AuNPs nano-enzyme is used as a signal amplifier, a hydrogen peroxide mediated paramagnetic ion valence conversion sensing system is used as a magnetic relaxation signal reading system, and a Pt@AuNPs nano-enzyme mediated magnetic relaxation immunosensor and a magnetic relaxation DNA sensor are respectively constructed and are used for rapid and high-sensitivity detection of bacterial infection markers and food-borne pathogenic bacteria.

The invention belongs to the technical field of organic chemical industries, and particularly relates to an efficient nano composite catalyst capable of converting CO2 to cyclic carbonate and a preparation method thereof. The preparation method comprises the following steps: (1) smashing and sieving natural attapulgite ores, removing impurities, to obtain attapulgite powder; (2) enabling the attapulgite powder to be dispersed in a first solvent, adding a modifier, stirring and reacting, treating to obtain solid powder; (3) enabling the solid powder to be dispersed in a second solvent, adding an organic ligand and metal salt, stirring and enabling the solid powder to be completely dissolved, standing, to obtain a preliminary product; and (4) placing the preliminary product in an oven with aroom temperature or a high temperature, enabling the preliminary product to be adequately reacted, centrifuging, washing and drying a product, to obtain the catalyst, wherein the metal salt is rare earth salt and/or transition metal salt. The prepared catalyst has the characteristics of easy acquisition of raw materials, low cost, simple preparation process, stable structure, high catalytic efficiency, easy separation and cyclic utilization of the catalyst and the like.

The invention belongs to the field of animal husbandry, and particularly relates to a plant-derived nutritional lick brick which is prepared from the following raw materials in parts by weight: 40-50 parts of suaeda glauca, 60-70 parts of purslane, 5-15 parts of sunflower leaves, 5-6 parts of attapulgite, 25-30 parts of corn starch, 20-30 parts of molasses, 500-600 parts of table salt and 10-12 parts of trace element premix. The modified attapulgite is used for preparing the lick brick, so that more effective components such as plant polysaccharide and flavone can be loaded on the surface of the attapulgite, the oxidation resistance of livestock can be improved, and the immune function of the livestock can be enhanced.