44results about How to "Resistant to mechanical shock" patented technology

The invention provides a method for improving temperature gradient in a high-temperature tension sample of a heat expansion phase change instrument. The method is characterized in that one of following methods is improved in the tension test process: a clamp is prepared from austenitic stainless steel to replace the existing clamp to test; or, a U-shaped heat isolation sleeve and a fixed screw heat isolation ring are arranged at the contact part of the sample clamping end and the clamp to completely isolate the clamp, the fixed screw and the tension sample through the U-shaped heat insulation sleeve and the fixed screw heat isolation ring, and the clamp is prepared from austenitic stainless steel to replace the existing clamp to test. The method has the advantages that the austenitic stainless steel is used as the clamp preparation material and the ceramic fiber sheet is used as the heat isolation sleeve and the heat isolation sleeve, so that the heat radiation and heat conduction of high-temperature objects and low-temperature objects are effectively inhibited; the operation is easy, the detachment and installation of the sample are convenient, and the material stability is guaranteed.

The invention discloses a waterproof plastering gypsum, and belongs to the technical field of plastering gypsums. The plastering gypsum comprises the following raw materials in parts by weight: 60-70 parts of desulphurization gypsum, 25-30 parts of silica sand, 14-18 parts of calcium carbonate, 13-15 parts of cement, 8-10 parts of polytrimethylene terephthalate fiber, 10-12 parts of ceramic fiber, 7-9 parts of modified magnesium hydroxide, 6-8 parts of kieselguhr, 5-7 parts of starch, 1-3 parts of hydroxy propyl methyl cellulose, 3-5 parts of an organosilicone water repellent, 1-2 parts of a retarder, 2-4 parts of an antibacterial agent, 14-16 parts of an acrylic emulsion and 5-15 parts of water. The invention further discloses a preparation method of the waterproof plastering gypsum, the preparation is simple, and the waterproof plastering gypsum has excellent waterproof, fireproof and high temperature resistant capabilities after being solidified.

The invention discloses ceramic fiber furnish composite paper and a preparation method thereof. The invention aims to provide the ceramic fiber furnish composite paper and the preparation method thereof, which take ceramic fibers and plant fiber dry pulp as main materials, can save forest resources and grass resources and have excellent fire resistance and high strength. The composite paper comprises the main material and an auxiliary material, wherein the main material comprises 25-60% of ceramic fiber and 40-75% of plant fiber dry pulp by weight percentage, the auxiliary material comprises rosin size, and the weight portion percentage of the main material to the auxiliary material is 100:4-8. In the ceramic fiber furnish composite paper, ceramic fibers are utilized to replace the plant fiber pulp so as to save a mass of plant resources, simultaneously, the paper and the cardboard have the performances of anti-corrosion, high strength, fire-resistance, high-temperature resistance, andthe like, and the fire-resistance is excellent; furthermore, the ceramic fiber furnish composite paper has no toxicity or harmfulness and is environment-friendly. The preparation method of the ceramic fiber furnish composite paper reduces the displacement, the wastewater treatment cost, the manufacture cost and the environment pollution.

The invention discloses a preparation method for a friction plate. Materials of the friction plate comprise an enhanced titanium alloy skeleton and filler. The enhanced type titanium alloy skeleton comprises titanium alloy powder, tungsten carbide and titanium hydride. The filler comprises graphene fiber, diatomite, brass powder, graphite, carbon fibers, silicon dioxide, Pbo fiber, adhesive spraying aluminum silicate fiber, nanometer phenolic resin, styrene butadiene rubber, aramid fiber, mineral fiber, copper fiber, polypropylene fiber, paper fiber, metallic aluminum powder, zinc powder, mica, calcined petroleum coke, red vermiculite, light magnesium oxide, precipitated barium sulfate, light calcium carbonate, modified phenolic resin, molybdenum powder, molybdenum disulfide, graphite, nitrile butadiene rubber, ferric oxide, chromium oxide and the like; and the four technological processes of burdening, mixing and stirring, hot pressing forming and curing are adopted to complete the preparation method for the friction plate. The friction plate prepared through the scheme is low in hardness, high in stability, low in noise generated when an automobile is used and good in safety performance.

The invention relates to a slice-type temperature sensor, and the temperature sensor comprises a substrate film, a thermistor chip, a positive circuit layer, a negative circuit layer and a capping film, wherein the substrate film is provided with a chip slot, and the thermistor chip is disposed in the chip slot. The positive circuit layer and the negative circuit layer are disposed on the substrate film and are not in contact with each other, and are respectively connected with positive and negative electrodes of the thermistor chip. The capping film is attached to the substrate film, therebyenabling the thermistor chip, the positive circuit layer and the negative circuit layer to be packaged. The invention also relates to a preparation method for a thermistor with a substrate. The temperature sensor provided by the invention is good in sealing performance, is reliable in performances, is high in protection strength, is resistant to mechanical impact, is resistant to bending, is not liable to be damaged, is long in service life, and is easy to prepare.

The invention provides a performance testing of anti-pressure oil well anti-seepage well cementation briquette prepared from ceramic fiber and gangue. The performance testing comprises the following steps: preparing the ingredients of the anti-seepage well cementation briquette: 40wt% to 50wt% of G-level oil well cement, 10wt% to 15wt% of superfine cement, 25wt% to 35wt% of gangue close-hole hollow ceramic microbeads with the particle sizes of 50 to 350 microns, 5wt% to 7wt% of coal ash with the ignition loss of 1.1%, 1.5wt% to 2wt% of calcium oxide with the purity of 99.9%, 0.5wt% to 1.0wt% of sodium sulfate, 1wt% to 5wt% of silica powder and 1.0wt% to 2wt% of alumina powder for sampling to obtain a mixture, wherein the sum of the weight percentages of the components is 100%; and blendingthe obtained mixture with the water cement ratio being 0.5 to 0.7 for size mixing to prepare a sizing agent, then adding a foaming agent with the total weight of 0.2% to 0.5% of that of the mixture,then adding ceramic fiber, graphite microbeads and expansion resin in proportion, and stirring uniformly to carry out anti-seepage performance testing.

The invention provides a preparation method of novel wall building material The method comprises the following steps: a) taking straw, a clay material, calcium carbonate, blast furnace slag, feldsparpowder and calcium borate and respectively drying the materials, and performing ball milling; b) taking modified nanocrystalline fiber, modified polystyrene, hydroxypropyl methyl cellulose and butyl rubber, mixing the materials for banburying, after banburying, adding water for stirring, adding a chitosan-containing acetic acid solution and a promoter, placing the materials in a high mixing machine, stirring the materials to obtain a mixture 1; c) mixing mixed powder, the mixture 1 and ammonium polyphosphate, adding water for stirring the materials, and adding an anti-oxidant and a fire retardant drop by drop until addition is completed to obtain a mixture 2; and d) introducing the mixture 2 in a die, performing vibration under room temperature and normal pressure, uniformly dispersing thematerials to form a blank material, drying the blank material, and performing steps of demoulding, maintenance and solidification. The prepared material has the advantages of low heat conduction coefficient, high flame retardation performance, and good stability.

The invention discloses high-strength ceramic fiber filter filter-paper. The high-strength ceramic fiber filter filter-paper is prepared from, by weight, 60-80 parts of straw pulp, 1-2 parts of ceramic fibers, 8-10 parts of aluminum silicate fibers, 1-2 parts of sodium tripolyphosphate, 1-2 parts of an antioxidant DSTP, 0.2-0.8 part of erucyl amide, 0.5-0.6 part of zinc borate, 10-18 parts of tencel fibers, 1-2 parts of polyvinyl acetate emulsion adhesive, 1-2 parts of sodium hexametaphosphate, 1-2 parts of folium artemisiae argyi, 1-2 parts of folium isatidis, 0.1-0.2 part of melamine, 15-20 parts of styrene-acrylic emulsion, 2-4 parts of orange peels, 4-8 parts of durian shells, 5-6 parts of sugarcane peels, 1-2 parts of coconut fibers, 3-5 parts of sawdust, 0.02-0.05 part of citric acid, 0.1-0.2 part of zinc nitrate and 0.2-0.5 part of silver nitrate.

The invention provides a method for molding a low-temperature-resistant high-strength polyethylene pipe applied to water supply. The method comprises the following steps: (1) preparing raw materials consisting of, by weight, 100 parts of polyethylene, 20 to 30 parts of polyolefin, 10 to 20 parts of CPVC resin, 1 to 5 parts of polyvinyl chloride resin, 1 to 3 parts of barium laurate, 1 to 2 parts of ACR-201, 5 to 10 parts of titanium dioxide, 1 to 3 parts of talcum powder and 1 to 2 parts of an anti-oxidant; (2) subjecting polyethylene, polyolefin, CPVC resin and polyvinyl chloride resin to vacuum-pumping; (3) adding polyethylene and polyolefin into a mixing pot at a low rotation speed, starting high-speed mixing, adding the CPVC resin polyvinyl chloride resin into the mixing pot at 70 DEGC, adding barium laurate at 80 DEG C, adding ACR-201, titanium dioxide and talcum powder at 110 DEG C; and (4) carrying out extruding via a conical twin-screw extruder so as to form a pipe, and afterextrusion, carrying out vacuum sizing and cooling so as to obtain the low-temperature-resistant high-strength polyethylene pipe. The method of the invention has the advantages of high extrusion speedand high production efficiency; and the prepared pipe is remarkably improved in strength, low temperature resistance and other performance.

The invention relates to a fire-resistant electrical cabinet, which comprises a cabinet body and a cabinet door, wherein the cabinet door is hinged on the cabinet body, the cabinet body is composed ofan outer shell, an inner shell and a fire-resistant layer, the fire-resistant layer is arranged between the outer shell and the inner shell, the outer shell and the inner shell are made of aluminum alloy base plates, the fire-resistant layer comprises fire-resistant ceramic fibers and thermosetting resin, the fire-resistant ceramic fibers comprises 4-8 parts of polyester fiber, 4-8 parts of chromium oxide, 5-7 parts of sodium dodecyl sulfate, 6-11 parts of carbon fibers, 5-6 parts of hydroxyethyl cellulose, 6-8 parts of filler, 6-8 parts of diatomite, 1-5 parts of triethanolamine, 6-10 partsof ethylene bis stearamide, 8-13 parts of 3-chlorobenzaldehyde glycine Schiff base, 3-6 parts of Kanuma mud, 7-10 parts of zirconia, and 2-5 parts of a potassium hydroxide solution being 20% in mass concentration. The fire-resistant electrical cabinet has the advantages of high strength, impact resistance, corrosion resistance and thermal insulation performance, and good fireproof effect.

The invention belongs to the technical field of insulating material manufacturing and provides an insulating material for pipelines and a preparation method. The insulating material for pipelines is prepared from, by weight, 50-75 parts of silicon dioxide particles with the average particle size pf 60-70 nm, 15-23 parts of hollow ceramic fiber, 2-9 parts of attapulgite clay particles and 11-15 parts of hollow glass fiber. The prepared insulating material has good insulating properties and high strength.

The invention relates to a novel polyvinyl chloride (PVC)+ medium composite (polypropylene) PP foamed sheet material. The upper part of a multi-layer composite sheet material is provided with an upper press polishing wheel, and the lower part of the multi-layer composite sheet material is provided with a lower press polishing wheel; a substrate plate and a substrate-plate rolling wheel are arranged at entering ends of the upper press polishing wheel and the lower press polishing wheel; a two-side ultrasonic surface roughening device is arranged at a position for passing through the substrate plate; ultrasonic surface roughening pretreatment of the two sides of the substrate plate is carried out, and then the substrate plate passes through extinction ABS extruded by an extinction ABS extruder and PP foaming material extruded by a PP foaming extruder, and is extruded for molding, by the upper press polishing wheel and the lower press polishing wheel, to obtain the multi-layer composite sheet material. The ultrasonic surface roughening device is added for surface roughening before the substrate plate enters, so that the multi-layer composite sheet material is more resistant to mechanical impact, high temperature and low temperature, and no layer rising phenomenon may occur.

The invention discloses melt-blow fireproof composite fiber non-woven fabric and a preparation method thereof. The melt-blow fireproof composite fiber non-woven fabric is prepared from the following components in parts by mass: 20 to 40 parts of plant fiber, 30 to 50 parts of fireproof fiber and 15 to 25 parts of silicon rubber. The preparation method comprises the following steps: opening and scutching the plant fiber and the fireproof fiber for at least two times; lapping the opened and scutched plant fiber and fireproof fiber by a lapping machine and carding the opened and scutched plant fiber and fireproof fiber by a carding machine; performing hot air adhesion, spraying the adhered fiber to a receiving device which performs high-speed transverse motion and low-speed longitudinal motion, and performing air cooling to form fiber cloth; spreading the obtained fiber cloth, calendaring the silicon rubber on the fiber cloth uniformly by a calendaring machine to prepare the product. Thepreparation method has the advantages of high high-temperature resistance, excellent fireproof property and the like.

The invention provides a test for performance of an enhanced ceramic fiber cordierite-prepared oil well anti-water-seepage well cementing test block, wherein the test includes the following steps: preparing materials of an anti-water-seepage well cementing test block: taking 40-50 wt% of G-grade oil well cement, 10-15 wt% of superfine cement, 25-35 wt% of cordierite closed-pore hollow ceramic microbeads with the particle diameter of 50-250 [mu]m, 5-7 wt% of fly ash with loss on ignition of 1.1%, 1.5-2 wt% of calcium oxide with the purity of 99.9%, 0.5-1.0 wt% of sodium sulfate, 1-5 wt% of silica fume and 1.0-2 wt% of an aluminum oxide powder, to obtain a mixture, wherein the sum of the weight percentages of the components is 100%; and slurry-adjusting the obtained mixture with the water-cement ratio of 0.5-0.7 to prepare a slurry, then adding a foaming agent with the amount 0.2-0.5% of the total weight of the mixture, then adding ceramic fibers, graphite microbeads and expansion resinin proportion, stirring evenly, and carrying out anti-water-seepage performance test.