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

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.

The invention relates to a cerium phosphate modified silicon carbide fiber reinforced silicon carbide composite material and a preparation method thereof. The method: (1) alternately prepare cerium phosphate interface layers and silicon carbide interface layers on the surface of the silicon carbide fiber preform until reaching a predetermined thickness or predetermined number of layers to obtain a modified silicon carbide fiber preform; (2) use carbon The precursor solution is impregnated with the modified silicon carbide fiber preform, and then the impregnated modified silicon carbide fiber preform is sequentially subjected to a curing step and a cracking step; (3) repeating step (2) at least once to prepare a porous silicon carbide fiber preform and (4) subjecting the prepared porous silicon carbide fiber preform to liquid silicon infiltration reaction to obtain a cerium phosphate modified silicon carbide fiber reinforced silicon carbide composite material. The cerium phosphate modified silicon carbide fiber-reinforced silicon carbide composite material prepared by the invention has excellent oxidation resistance, temperature resistance, thermal shock resistance, etc., excellent comprehensive performance at high temperature, and long service life.

The invention provides a ship three-shaft gas turbine based on rotary detonation combustion. The ship three-shaft gas turbine comprises a low-pressure compressor, a high-pressure compressor, a rotary detonation combustion chamber, a thermojet detonation tube, a mixer, a low-pressure turbine body, a high-pressure turbine body, a power turbine body, a load and a cold source. The rotary detonation combustion chamber is applied to the ship gas turbine. The mode that air of the low-pressure compressor participates in combustion and air of the high-pressure compressor participates in mixing and cooling is adopted, the effect that a working medium at an inlet of the turbine does not exceed the temperature is ensured, and the working medium subjected to detonation combustion has higher working capacity. The supercharging performance of the rotary detonation combustion chamber is used, and the cycle thermal efficiency of the gas turbine is improved by 3% to 5% under the same turbine inlet temperature, part efficiency and compressor pressure ratio.

The invention belongs to the installation structure of a high-temperature gas pressure measuring sensor. In order to solve the problem that in the prior art, when the pressure measuring sensor is used to measure the chamber pressure of the combustion chamber, due to the limited installation space and the harsh measurement environment, the pressure measuring sensor is prone to inaccurate measurement or even measurement failure. The technical problem is to provide a heat protection installation structure for a pressure sensor in a narrow space, including a support base, a pressure measurement conduit and a clamp; the upper part of the support base is an L-shaped fixing plate, and the lower part is a supporting base; one end of the supporting base is connected to the fixing plate The bottom and the other end are fixed on the wall of the combustion chamber; the clamp is set on the outside of the pressure sensor, and the clamp joint is installed on the side wall of the fixed plate; one end of the pressure measurement conduit is connected to the detection end of the pressure sensor , the other end communicates with the interior of the combustion chamber, the middle part of the pressure measurement conduit is coiled, and the pressure measurement conduit bypasses the support seat.

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.

The invention relates to a novel high-efficiency dedusting and desulphurization integrated system process for a coke-tamping, coaling and coke-discharging ground station, comprising the following steps: smoke gas enters a heat accumulating type cooler to be cooled to below 120 DEG C during coal feeding or coke discharging; the cooled smoke gas enters a multifunctional separator and separated tar and a part of large-particle sparkle dust enter a tar settling tank; the smoke gas processed by the multifunctional separator enters a fire resistance bag type dust remover to be filtered; and clean gas is discharged into the atmosphere after filtration. The novel high-efficiency dedusting and desulphurization integrated system process for the coke-tamping, coaling and coke-discharging ground station thoroughly solves the core problems of flammability, explosion proof, hard elimination of toxic gas and high-sulphur coal desulfurization of hard fire cloth bags, tar paste cloth bags and bag-typedust removers, which plague coking enterprises and dust removal enterprises for many years. Proved by practical tests, the dust removal efficiency is more than 99.7 percent, the discharged dust concentration is less than 40mg / m<3>, dust recycled by the ground station is 1400t / a, and smoke and dust are not generated in the production process of a coke oven, thereby completely meeting environmentalrequirements.

A method for in-situ heating and exploitation of oil shale by microwave step-down heating, comprising the following steps: (1) setting a microwave heating well on the oil shale ore layer, and the microwave heating well is located at the center of the oil-gas outlet fracture; (2) When the temperature sensor monitors that the temperature of the microwave heating well reaches the upper limit, the microwave power is reduced stepwise, so that the oil shale deposit is radiated and heated, so that the generated oil and gas are exported through the oil and gas outlet fractures. The method adopts the heating mode of step-down microwave heating oil shale, which not only utilizes the advantage of easy control of microwave power, but also is a high-efficiency heating method with higher efficiency than the intermittent microwave heating mode.