33results about How to "Strong resistance to crushing" patented technology

The invention provides a fly ash oil fracturing proppant which is prepared from the following constituents: 1wt%-60wt% of fly ash, 1wt%-30wt% of potash feldspar powder and balance of bauxite powder. According to the invention, the low-cost fly ash is used as the raw material, in the preparation process, the Al2O3 in the fly ash generates mullite, the surplus SiO2 in the raw material is transformed into low-apparent density minerals, such as the phosphorous quartz, and the apparent density of product is reduced. The K2O in the potash feldspar powder is used as the mineralizer, consequentially, the material is more compact, and thus, the strength of the oil fracturing proppant is increased. Moreover, when the Al2O3 and the SiO2 in the raw material are dissolved to a certain concentration, the Al2O3 and the SiO2 react with each other to generate the acicular mullite under the action of devitrification, and the mullite is continuously dissolved and devitrified so as to be changed from solid-phase reaction to liquid-phase reaction, as a result, the reaction speed is accelerated greatly, and the temperature needed for reaction is lowered.

The invention provides a method for preparing black monodisperse polymer microspheres. The method comprises the following steps: by taking polymer seed microspheres as raw materials and oil-soluble aniline black as a black dye, dyeing the polymer seed microspheres by using a seed swelling polymerization method, thereby preparing polymer microspheres; and activating black dyes adsorbed by the black polymer microspheres through a chemical reaction so as to form an activated reaction intermediate, realizing chemical bond connection between the black dye and the polymer microspheres, thereby obtaining the black monodisperse polymer microspheres. The black monodisperse polymer microspheres prepared by the method are different from common dyed microspheres and have certain resistance to pressure, namely excellent mechanical property. Moreover, the black microspheres are smooth in surface without agglomeration, uniform in particle size and narrow in particle size distribution range and have high dispersity, and the CV value of the black microspheres is less than 3 percent.

The invention discloses a composition and a preparation method for high-elasticity wear-resistant foaming materials, wherein the composition comprises, by mass, 20-65 parts of a polyether type polyurethane rubber, 20-65 parts of an ethylene-vinyl acetate copolymer, 7-18 parts of a polyolefin thermoplastic elastomer, 3-8 parts of a polybutadiene rubber, 5-15 parts of ethylene propylene diene monomer, 5-10 parts of a reinforcing agent, 0.3-1 part of a coupling agent, 1.0-2.0 parts of zinc oxide, 0.5-1.0 part of stearic acid, 0.8-1.5 parts of zinc stearate, 0.5-1.5 parts of a cross-linking aid, 1.0-2.5 parts of a vulcanizing agent, and 1.5-3.5 parts of a foaming agent. The preparation method mainly comprises: two mixing, granulation, and foaming. According to the present invention, by adopting the technical scheme, the obtained foaming material product has advantages of small density, softness, wear resistance, excellent anti-cussion performance, good elasticity, compression resistance, small compression deformation and folding deformation resistance.

The invention discloses a specific cutting knife-material of semiconductor material wire (6H-SiC), which comprises the following steps: 1. grinding through cyclone; grading flow; 2. grading water pretreatment; grading finely for overflow; 3. wetting to blend; dehydrating eccentrically; separating; 5. drying through microwave continuously; 6. blending dryly. The invention is compatible with flexibility of black carbofrax, which improves anti-grinding property obviously.

The invention relates to spinel high-strength petroleum fracturing proppant and a production method thereof. The proppant comprises the following raw materials: 63-70% of raw bauxite, 5-10% of forsterite, 2.5-6% of dolomite, 0.5-3% of boric acid, 3-7% of manganese ore powder and 13-20% of magnesium spinel. The production method comprises the following steps of: respectively grinding each raw material into fine powder during the preparation and screening by a 320-mesh sieve; mixing uniformly to obtain a mixture, then feeding the mixture to a rotary granulator while adding atomized moisture, preparing the mixed material into round grains and screening by a sieve with 18-30 meshes to obtain a half-finished product; drying the half-finished product till the moisture content is less than 6%; and transferring the dried half-finished product to a rotary kiln to bake, controlling temperature of a kiln head to be 1285 to 1400 DEG C and temperature of a kiln end to be 280 to 325 DEG C and burning for 6-8h and the discharging out of the kiln. According to the invention, the raw materials form a large amount of magnesium aluminate spinel phases at high temperature so as to play a supporting role of a skeleton; the obtained spinel high-strength petroleum fracturing proppant has the advantages of good compactness and strong anti-crushing capacity; the breakage rates of the spinel high-strength petroleum fracturing proppant at 52 MPa, 69 MPa and 86 MPa respectively are respectively less than 3.5%, less than 7.5% and less than 10.5%, the strength of the spinel high-strength petroleum fracturing proppant is higher than that of the products of the same kind and the performance of the spinel high-strength petroleum fracturing proppant is excellent; and meanwhile, the production techniqueis optimized, low in cost and easy to promote and implement.

The invention relates to a packaging method of an MEMS sensor, which comprises the following steps: providing a multilayer circuit board, carrying out cleaning and drying, printing bonding pad for leads on the multilayer circuit board, and welding gold balls on the pads for leads; providing an MEMS sensor chip, printing a chip bonding pad on the back face of the MEMS sensor chip, and depositing multiple layers of metal films on the chip bonding pad through sputtering; inversely arranging the MEMS sensor chip on the multilayer circuit board; bonding a bonding pad for the leads and a chip bonding pad by using a hot-pressing bonding technology by taking the welding gold ball as a salient point, and filling a filler between the bonding pad for the leads and the chip bonding pad; bonding a protective cover on the front surface of the MEMS sensor chip by using an adhesive; and providing an elastic cover of which the upper surface is covered with a glass film, and adhering the elastic cover to the protective cover by adopting an adhesive to obtain the MEMS sensor. Compared with the prior art, the invention has the advantages of low production cost, easiness in batch production, good air tightness and the like.

The invention discloses a control system for safety inspection of a vehicle bottom. The control system comprises a controller for controlling signal input and output, a scanning-imaging device for scanning the vehicle bottom, a system host for controlling the scanning-imaging device and the controller, a displayer for displaying vehicle information, a sensor for judging whether a vehicle enters or exits from a detection range, a scene camera for monitoring and videoing the whole inspection process, and a vehicle identity recognizer for recognizing the vehicle identity, wherein the controller is connected with the scanning-imaging device, the system host and the sensor respectively; the scanning-imaging device is connected with the system host; and the system host is connected with the displayer, the scene camera and the vehicle identity recognizer respectively. The control system saves electric energy, prevents illegal vehicles from sneaking into, improves safety and eliminates inspection omission; and the image resolution of a vehicle bottom image reaches up to millions even hundreds of billions pixels, so that the inspection efficiency is high and the control system meets the requirements of various inspection processes.

The invention discloses a preparation method of a composite petroleum fracturing propping agent, and belongs to the technical field of fracturing propping agents. The preparation method comprises the following steps: respectively selecting bauxite, mullite, manganese dioxide, ferric oxide and dolomite, carrying out ball milling, sieving the ball-milled materials to obtain mixed powder, mixing the mixed powder with a sodium hexametaphosphate solution to obtain a suspension, dropwise adding a tetradecyl trimethyl ammonium bromide solution, stirring the tetradecyl trimethyl ammonium bromide solution and the suspension to obtain a mixed solution, adding acid-modified vermiculite to the mixed solution, aerating the mixed solution, carrying out ultrasonic vibration, centrifuging the obtained solution to obtain a precipitate, drying the precipitate, carrying out high temperature calcining on the dried precipitate in a sintering kiln to obtain a calcined substance, and carrying out dry ice cooling to the fracturing propping agent. The fracturing propping agent prepared in the invention has the advantages of good compressive strength, high fragmentation resistance, low density and low production cost.

The invention relates to a direct blending and melting fertilizer forming device for producing a biochar-based urea fertilizer. The device comprises a screw extruder, wherein the screw extruder is connected with a motor and a transmission, and the rate of extrusion is controlled by the motor and the transmission; the screw extruder is externally coated with a first heating cavity sleeve, thereby ensuring that the temperature is in a suitable range while blending, and ensuring that the urea is kept in a stable molten state; the screw extruder is provided with a feed port and a discharge port, and a blender is arranged above the feed port; the blender is externally coated with a second heating cavity sleeve, and the discharge port is provided with a porous discharge mold, so that biochar andthe urea in a molten state are fully contacted and extruded by the porous discharge mold; a biochar powder feed chute and a urea solid powder feed chute are arranged above the blender, and a rotary cutter is arranged at the outer side of the porous discharge mold. The invention also relates to a direct blending and melting fertilizer forming method for producing the biochar-based urea fertilizer.The biochar and the urea in a molten state are fully contacted and extruded by the porous discharge mold to produce the biochar-based urea fertilizer with stronger crushing force resistance.

The invention discloses a method for preparing an iron-titanium-vanadium ternary polymeric flocculant through a hydrochloric acid dissolution vanadium titano-magnetite one-step method, and belongs to the technical field of flocculant preparation. According to the method, vanadium titano-magnetite concentrate is used as a raw material, dried and ground into powder, the powder is placed in a three-neck flask reactor, hydrochloric acid is added for a leaching reaction, the reaction temperature, the reaction time, the hydrochloric acid concentration and the liquid-solid ratio are controlled, and the leaching reaction process is carried out under normal pressure under magnetic stirring. After the reaction is completed, leaching liquid in the reactor is subjected to suction filtration to obtain filtrate, the concentration of dissolved-out metal ions is measured through an inductively coupled plasma spectrum generator, sodium hydroxide with different volumes and specific concentrations is added for alkalization, and after further aging, storage in a glass container at normal temperature is conducted. The method is stable in reaction, simple to operate, easy to control and free of high temperature, the obtained inorganic polymeric flocculant is good in stability, the removal effect on organic matter is better than that of a conventional aluminum flocculant, cost is low, and the method has a certain application prospect in the area where vanadium titano-magnetite is convenient to transport.

The invention relates to a method for controlling a vehicle bottom safety inspection control system. By the method, a sensor, a scene camera and a vehicle identifier are utilized; scan imaging equipment can be started only when required, so that electric energy is saved; an inspection process is monitored and recorded, so that an inspection range is enlarged, the interfusion of illegal vehicles can be prevented, and the safety is improved; the whole inspection process is automatically finished within a short time, and a vehicle bottom is integrally imaged, so that the phenomenon of inspection leakage is prevented; and the image resolution rate of a vehicle bottom picture reaches millions and even hundreds of billions of pixels, so that the method is high in inspection efficiency and meets the requirements of various inspection processes.

The invention discloses a specific cutting knife-material of semiconductor material wire (6H-SiC), which comprises the following steps: 1. grinding through cyclone; grading flow; 2. grading water pretreatment; grading finely for overflow; 3. wetting to blend; dehydrating eccentrically; separating; 5. drying through microwave continuously; 6. blending dryly. The invention is compatible with flexibility of black carbofrax, which improves anti-grinding property obviously.

The invention relates to healthcare vermicelli containing mantis shrimp heads and mantis shrimp shells and a preparing method thereof. The healthcare vermicelli comprises following raw materials by weight: 55-75% of composite starch, 5-10% of mantis shrimp enzymatic hydrolysis protein liquid, 3-5% of calcium ascorbate, 0.1-0.5% of Chinese honey locust gum, 10-15% of common bluebeard herb, 5-10% of carpesium cernuum, 1.5-3% of celery seed oil and 0.4-1.5% of a selenium salt. The raw materials are prepared into the vermicelli through a plurality of processing manners. The problem that the mantis shrimp enzymatic hydrolysis protein liquid is strong in bitter and fishy taste and cannot be adopted as a food base material is overcome. The vermicelli has higher nutritional and healthcare value and has characteristics of high eating safety, good toughness and boiling fasteness, delicious taste and better mouthfeel. Frequent easting of the vermicelli is capable of replenishing a plurality of nutrition elements essential to human bodies, regulating body immunity, strengthening tendons and bones, invigorating brain, reinforcing intelligence, delaying senescence, resisting mutagenesis, and preventing occurrence of various diseases of human bodies. Waste materials are utilized comprehensively. The vermicelli and the method have great social, ecological, environmental and economic benefit.

The invention discloses a novel ceramic cutter material and a preparation method thereof. The ceramic cutter material contains Al2O3, WC, TiC and a rare-earth additive. The preparation method of the ceramic cutter material comprises the following steps of: step 1, mixing Al2O3 powder, WC powder and TiC powder to obtain a raw material mixture; step 2, adding a rare-earth additive in the raw material mixture; step 3, by taking absolute ethyl alcohol as a medium, and carrying out wet ball-milling on the raw material mixture with the rare-earth additive for 100 hours to obtain a slurry; step 4, drying the slurry in vacuum and sieving in a nitrogen flow to obtain a powder; and step 5, carrying out hot-pressing formation on the powder. The ceramic cutter prepared by the ceramic cutter material has the obvious advantages of high bending strength, large fracture toughness, high hardness, good wear resistance and the like. The method is simple in process, high in production efficiency and suitable for large-scale production.

The invention discloses a large-diameter ultra-thin resin cutting grinding wheel. The large-diameter ultra-thin resin cutting grinding wheel comprises a reinforcing layer and a grinding layer; the reinforcing layer is glass fiber gridding cloth, the grinding layer is formed by combining abrasive material, a binding agent, padding and pigment according to the weight ratio of 90-130:10-35:3-20:0.2-3. The large-diameter ultra-thin resin cutting grinding wheel is obtained through mixing, forming and curing. The diameter of the large-diameter ultra-thin resin cutting grinding wheel ranges from 300to 500 mm, the thickness is 1.8+ / -0.3 mm, the production cost is reduced, the cutting opening is small, the cut material loss is reduced, the cutting efficiency is high, and the service life is long.

The invention discloses a low-density high-effect ceramic granule and a preparation method thereof. Raw materials of the ceramic granule composed of a main ingredient and an additional ingredient, wherein the main ingredient comprises following components, by mass, 50-65% of light-roasted bauxite, 25-40% of light-roasted clay, 3-5% of denatured clay and 2-5% of a mullite clinker; and an addition amount of the additional ingredient accounts for 1-3% of the total mass of the main ingredient. The additional ingredient is a binding agent. The ceramic granule is low in density and high in anti-breaking capability.

The invention discloses an intumescent fireproof glue for fireproof doors and a preparation method thereof, relates to the field of fireproof materials, and comprises the following raw materials in parts: 65~75 parts of rubber, 55~65 parts of flame retardant microcapsules, liquid silicon 50~53 parts of sodium bicarbonate, 47~49 parts of expanded graphite, 40~45 parts of glycerin, 36~38 parts of spherical closed-cell expanded perlite, 30~35 parts of hypophosphite, 15~20 parts of additives and 45~ 65 servings. The invention is easy to construct, and can expand violently under flame or high temperature to form a fire-resistant and heat-insulating layer to prevent flame and smoke from spreading and achieve ideal fireproof performance.

The invention relates to the field of intelligent traffic, in particular to a rolling sensing device and a signal processing method thereof. The rolling sensing device comprises a sensing band composed of a plurality of sensors connected in parallel, a signal processing module and a micro-control unit (MCU); the sensing band, the signal processing module and the MCU are electrically connected; thesensing band processes a collected signal and sends the signal to the signal processing module; after receiving the signal, the signal processing module processes the signal and sends the signal to the MCU; and the exterior of the sensing band is provided with a protective shell covering the sensing band. According to the device, the plurality of rolling sensors are connected in parallel, so thatthe problem of low identification precision in the prior art is solved; the protective shell is arranged on the outer layer of the sensing band, so that ground mounting can be achieved, and the problem of difficulty in laying in the prior art is solved; and the laying cost is low, so that large-area laying is facilitated.

The invention provides a special efficient coagulant for strongly-acidic antimony-containing wastewater. The special efficient coagulant for the strongly-acidic antimony-containing wastewater is prepared by taking tetraethyl orthosilicate (TEOS) and reduced glutathione (GSH) as raw materials, sodium bicarbonate (NaHCO3) and hydrogen peroxide (H2O2) as activating agents and glutaraldehyde as a cross-linking agent. The special efficient coagulant provided by the invention solves the technical problems of high treatment cost and complex operation due to the fact that a pH value needs to be adjusted to 4-10 in advance when the antimony-containing wastewater is treated by using a coagulation method in the prior art.

The invention specifically discloses a road crossing device of a ground cross-hole resistivity CT (Computed Tomograpphy) measurement cable. The device comprises a plurality of split elements, a plurality of jointing elements and a plurality of fixing devices, wherein the split elements are connected by virtue of the jointing elements; the fixing devices are used for fixing the split elements and the jointing elements; the cross sections of the split elements are triangular strip-type steel structures; and the inner sides of the split elements are provided with cable fixing devices. The device has the following beneficial effects: the device can be used for simultaneously measuring drilled holes on two sides after being arranged on a road surface; after measurement, the cable is taken out, the fixing devices are detached, the whole device is detached into split devices, is small in size after detachment, and convenient to carry; each connection part of the device is a movable connection which is convenient and reliable and can be easily detached and maintained; and the whole measurement device (comprising the connecting elements) is made of a rigid metal material, is strong in anti-compaction capability, and can be moved on the road conveniently.

The invention discloses a monodisperse polymer microsphere for a dry spraying machine, which takes a monodisperse polymer microsphere as a matrix, the surface of the microsphere is connected with a silane coupling agent for chemical modification, and finally, the material is subjected to atomization treatment by spray drying equipment. The microspheres are high in crosslinking degree and high in pressure resistance, so that the excellent thickness of a liquid crystal box of a liquid crystal display can be kept, and due to the fact that one end of the connected silane coupling agent contains ahydrophobic group, the hydrophilicity of the spheres is reduced, and agglomeration is effectively improved; meanwhile, due to special chemical modification, the surface of the ball body is smoother, sufficient and uniform electric quantity is guaranteed, and spraying uniformity is achieved. The residual water on the surfaces of the spheres is reduced through atomization drying, and particle aggregation in the storage process is effectively avoided.