31results about How to "Meet temperature resistance requirements" patented technology

The invention relates to a yttrium silicate modified silicon carbide fiber reinforced silicon carbide composite material and a preparation method thereof. The preparation method comprises the following steps: (1) sequentially preparing a yttrium silicate interface layer and a silicon carbide interface layer on the surface of a silicon carbide fiber prefabricated body so as to obtain a yttrium silicate modified silicon carbide fiber prefabricated body; (2) soaking the yttrium silicate modified silicon carbide fiber prefabricated body prepared in the step (1) into a carbon precursor solution, and sequentially carrying out a curing step and a cracking step on the soaked yttrium silicate modified silicon carbide fiber prefabricated body; (3) at least repeating the step (2) once so as to obtaina porous silicon carbide fiber prefabricated body; (4) carrying out a liquid silicon infiltration reaction on the porous silicon carbide fiber prefabricated body prepared in the step (3), thereby obtaining a yttrium silicate modified SiC/SiC composite material. The yttrium silicate modified SiC/SiC composite material provided by the invention has excellent oxidation resistance, temperature resistance, vapor corrosion resistance, and the like, and is excellent in comprehensive property.

The invention discloses a coating composition for a transferable laser anti-counterfeiting plate and a method for preparing the transferable laser anti-counterfeiting plate. The coating composition comprises the following components in parts by weight: 2-15 parts of polyacrylate resin, 5-10 parts of high-Tg-monomer-containing modified polyacrylate resin, 2-5 parts of hydroxyl-containing polyacrylate resin, 1-3 parts of low polyisocyanate resin, 0.1-0.5 part of aid and 72-82 parts of solvent. The method for preparing the transferable laser anti-counterfeiting plate comprises the following steps: coating the coating composition on a polyethylene glycol terephthalate (PET)-based film, performing die pressing, plating aluminum, coating and transferring a heat-seal adhesive, and preparing a transferable film; stripping the PET-based film on the transferable film, compounding the coating composition to a coil base material, and preparing the transferable laser anti-counterfeiting plate. The coating composition can meet high solvent-resistant and temperature-resistant temperatures in the production process of laser anti-counterfeiting plates. Moreover, the PET-based film used by transferable color steel can be repeatedly used, environment friendliness is promoted, and the production cost is reduced.

The invention relates to environmentally-friendly white halogen-free reinforced flame-retardant high-temperature nylon. The nylon comprises the following components in part by weight: 35 to 75 parts of high-temperature nylon resin, 4 to 25 parts of flame retardant, 0.1 to 0.5 part of auxiliary agent and 10 to 50 parts of reinforced material. The preparation method for the nylon comprises the following steps of: 1) drying; 2) mixing; 3) extruding; and 4) molding and pelletizing. The product has the advantages of high strength, high flame resistance, high size stability, high temperature resistance, environment friendliness and the like. An antioxidant can play a role in anti-oxidizing protecting, maintains the stability of materials of the product in production, and protects the flame retardant and the high-temperature nylon resin from oxidative discoloration and decomposition; and a nucleating agent and a lubricating agent can improve the fluidity of the product, speed up the cooling and the forming of the product, improve the production efficiency of the product in injection machining, and contribute to demoulding the products in the injection molding. The environmentally-friendly white halogen-free reinforced flame-retardant high-temperature nylon can be used in circuit breakers, socket connectors such as power connectors, storage card connectors and sockets, motor components, computers and auxiliary equipment thereof, electric products, household electric appliance and the like.

The invention discloses a high-temperature-resistant honeycomb node adhesive and a preparation method thereof and relates to an adhesive and a preparation method thereof. The high-temperature-resistant honeycomb node adhesive is used for solving the problem that the existing honeycomb node adhesive cannot meet the requirements on the manufacturing of polyimide paper honeycomb due to low temperature-resistant level and poor bonding compatibility. The adhesive is prepared from matrix resin, BMT type bismaleimide resin, phenolic cyanate ester, a co-polymerization modifier, a rubber elastomer toughening agent, inorganic nanometer filler and a solvent. The preparation method comprises the following steps: firstly, weighing; secondly, preparing toughening modified resin; thirdly, mechanically blending to obtain mixed rubber sheets; and fourthly, preparing uniform rubber liquid under stirring. The high-temperature-resistant honeycomb node adhesive is mainly applied in manufacturing aerospace polyimide paper honeycomb and has the characteristics of high temperature resistance and good process performance. The high-temperature-resistant honeycomb node adhesive prepared by the preparation method is used for the manufacturing of aerospace polyimide paper honeycomb and has the characteristics of high temperature resistance and good process performance.

A microwave step-down in-situ heating method for mining oil shale includes the following steps: (1) setting a microwave heating well on an oil shale ore layer, wherein the microwave heating well is located at the center of an oil and gas export crack; and (2) after a temperature sensor monitors that the temperature of the microwave heating well reaches the upper limit, reducing the microwave powerin a stepwise manner so as to radiately heat the oil shale ore layer, so that the generated oil and gas are exported through the oil and gas export crack. The method adopts the heating mode of step-down type microwave heating for oil shale, not only takes advantage of the easy control of microwave power, but also is a high-efficiency heating method with higher efficiency than an intermittent microwave heating mode.

The invention relates to a temperature-resistant thickening light-cured epoxy vinyl ester resin and a preparation method thereof, and specifically discloses an epoxy vinyl ester resin composition. Thecomposition comprises components (A) to (G). The invention also discloses a method for preparing the resin composition, and a resin product comprising the resin composition.

The invention relates to a cerium phosphate modified silicon carbide fiber reinforced silicon carbide composite material and a preparation method thereof. The method comprises the steps: (1) alternatively preparing a cerium phosphate interface layer and a silicon carbide interface layer on the surface of silicon carbide fiber preforms until the predetermined thickness or the predetermined number of layers is reached, and thus preparing modified silicon carbide fiber preforms; (2) impregnating the modified silicon carbide fiber preforms with a carbon precursor solution, and then solidifying andsplitting the impregnated modified silicon carbide fiber preforms in turn; (3) repeating the step (2) at least once, and thus preparing porous silicon carbide fiber preforms; and (4) carrying out liquid silicon melt-infiltration reaction of the prepared porous silicon carbide fiber preforms, and thus preparing the cerium phosphate modified silicon carbide fiber reinforced silicon carbide composite material. The prepared cerium phosphate modified silicon carbide fiber reinforced silicon carbide composite material has the advantages of excellent oxidation resistance, temperature resistance andthermal shock resistance, excellent comprehensive performance at high temperature and long service life.

The embodiment of the invention provides a low-dielectric liquid crystal polyester composition and a preparation method thereof. The low-dielectric liquid crystal polyester composition comprises 40-90% LCP (A) and 10-60% LCP (B) fibers, the melting point of the LCP is larger than or equal to 280 DEG C, the dielectric constant is lower than 3.5, the dielectric loss tangent angle is lower than 0.002, and the melting point of the LCP (B) fibers is higher than the melting point of the LCP (A) by 30 DEG C or above. The low-dielectric liquid crystal polyester composition has good flowing performance, the dielectric constant is lower than 3.5, the dielectric loss tangent angle is lower than 0.002, meanwhile, the tensile strength is larger than 150 MPa, and the temperature resistance requirement of the SMT manufacturing procedure is met.

The invention discloses high-temperature-resistant TPE plastic. The high-temperature-resistant TPE plastic is prepared from, by weight, 10-11 parts of SEBS, 5-7 parts of white mineral oil, 3-5 parts of polypropylene (PP), 2-3 parts of polyethylene, 1-2 parts of polyphenyl ether, 2-3 parts of calcium carbonate and 0.005-0.01 part of stabilizer.

The invention discloses a glassware coated with a non-sticky coating layer. The glassware coated with a non-sticky coating layer comprises a glass base body; the glass base body possesses an internalsurface; the internal surface is coated with the non-sticky coating layer; the non-sticky coating layer and the internal surface of the glass base body are connected through a binding layer; the non-sticky coating layer comprises a bottom layer and a surface layer; and preferably, the glass base body is prepared from high borosilicate glass. The invention also discloses preparation technology of the glassware. The preparation technology comprises steps of glassware internal surface pre-treatment, binding layer spraying coating, bottom layer spraying coating, surface layer spraying coating, andsintering, so that a finished product is obtained at last. According to the preparation technology, glass surface sand-blast treatment is avoided, and coating of the binding layer is adopted, the entire effect is improved, the non-sticky coating layer possesses excellent combination force with the glass base body, the glassware surface is not sticky, is convenient to clean, possesses corrosion resistance and high temperature resistance, and is long in service life.

The invention relates to a formula of a petroleum perforating bullet sealing adhesive. The formula is mainly used for solving problems in the prior art that the curing time of an existing sealing adhesive is long, bonding effect is poor, and falling of charge liners is easily caused. The petroleum perforating bullet sealing adhesive comprises, by weight, an adhesive and silver powder at a ratio of280:3-5. A preparation method of the petroleum perforating bullet sealing adhesive comprises following steps: proportionally and uniformly mixing and stirring the weighed adhesive CA40H and silver powder, and smearing the bonding part of a shell to be bonded with a charge liner to form an annular adhesive tape with the thickness of more than 0.5 mm for bonding. According to the petroleum perforating bullet sealing adhesive formula, the curing time can be shortened, the bonding effect is good, the falling problem of charge liners is solved, and a solid foundation is laid for subsequent production.

The invention discloses a high-thermal-conductivity anticorrosive coating for a heat exchanger tube bundle. The high-thermal-conductivity anticorrosive coating comprises the following components: 40-60 parts of high-temperature curable epoxy modified organic silicon resin, 10-30 parts of a thermal conductive filler, 1-2 parts of a cross-linking agent, 0.2-1 part of a defoaming leveling agent and 15-30 parts of a solvent. The prepared anticorrosive paint has the characteristics of high temperature resistance, high heat conductivity, corrosion resistance and good scale inhibition performance, can prevent the heat exchanger from generating the problems of corrosion perforation, scaling blockage and the like in the high-temperature service process on the premise of ensuring the heat exchange efficiency of the heat exchanger, and provides a good protection effect for the heat exchanger.

The invention relates to the technical field of oil production engineering and in particular relates to a temperature controlled plugging agent for heavy oil steam stimulation. The problem that the conventional plugging agent is poor in temperature resistance and easily contaminates the reservoir is solved. The plugging agent disclosed by the invention is composed of the following components in percentage by weight: 3-6.9% of cellulose ether, 3-5% of a temperature control agent, 0.9-3.2% of a stabilizer, 1-2.8% of a cosolvent and the balance of water. The plugging agent disclosed by the invention has the characteristic of phase reversibility, is liquid under the normal temperature condition, is changed from liquid to gel while meeting high-temperature steam, then changed from the gel to liquid when the temperature is lower than a gelling temperature of the gel, and can be produced along with crude oil. The plugging agent has excellent temperature resistance and low pollution to the reservoir, and the development effect of steam stimulation is greatly improved.

The invention discloses a CSP heating furnace flue gas recirculation waste heat recovery system which comprises an air preheater and a coal gas preheater, the air preheater and the coal gas preheater are in through connection through a smoke exhaust main pipeline, the coal gas preheater is connected with a chimney through a smoke exhaust pipeline, a first adjusting valve is arranged on the smoke exhaust pipeline of the coal gas preheater and the chimney, and a second adjusting valve is arranged on the smoke exhaust pipeline of the coal gas preheater. The second adjusting valve and the third adjusting valve are both arranged on a bypass flue, the bypass flue is provided with a waste heat recovery system and an induced draft fan, the cold air pipeline is provided with a fourth adjusting valve, the other end of the cold air pipeline is connected with a cold air mixing fan through a three-way structure, and the other end of the three-way structure is communicated with a smoke exhaust main pipeline. And a regulating valve V is arranged between the cold air mixing fan and the adjacent three-way structure. The cooled flue gas is circulated to the front of the double preheaters to replace the existing mixed cold air to cool the discharged high-temperature flue gas, so that the oxygen control of the flue gas is realized, and the flue gas emission reaches the environmental protection standard; and a waste heat recovery device is additionally arranged for factory production and living, so that energy is saved.

The invention relates to silver paste for mobile phone shielding and a preparation method of the silver paste for the mobile phone shielding. The conductive silver paste comprises the following components, by weight, 45%-54% of metal silver powder, 7%-9% of high polymer resin, 0.2%-0.4% of adhesive force accelerant, 0.5%-2.0% of thickener, and 37%-45% of solvent. The production and preparation of the silver paste is completed through carrier preparation, silver paste preparation and production. Compared with the prior art, the preparation method can enable silver paste products to be solidified at 80 DECG in 30 minutes, and a resistance value after solidification is less than 1 ohm, and therefore not only are temperature-resistance requirements of shielding materials satisfied, but also resistance requirements needed by shielding are satisfied.