35results about How to "To disperse" patented technology

The invention discloses a preparation method of a catalyst to produce methyl methacrylate efficiently at low cost. The catalyst is made by a polymeric protection process and is a supported catalyst with an active center supported on a support; the active center includes gold and a rare-earth metal; the support is one of SiO2, SiO2-Al2O3, CaCO3, carbon material, and molecular sieve material; the catalyst is 0.05-0.98% by weight in gold loading capacity and 1-2.5% by weight in rare-earth metal loading capacity. The preparation method is suitable for preparing a gold particulate catalyst having uniform particle size and high activity; the preparation process is simple; the preparation method is convenient to perform; active component loading capacity is low; the catalyst has excellent activity and good stability; the catalyst is prepared at low cost; methylacrolein conversion rate and MMA (methyl methacrylate) selectivity are high; the preparation method is suitable for industrial production.

The invention discloses a method for preparing freeze-dried powder of an active cell extract of fresh pilose antler. The preparation method comprises the following steps: fresh and frozen pilose antler is taken out, is sliced, is ground, is added with ethanol, is evenly stirred, is subjected to breaking treatment through an ultrasonic breaking instrument, and is centrifugated to obtain two parts of supernatant liquid and sediment; the part of the supernatant liqid is decompressed, condensed, frozen and dried through a freezedryer to prepare dry powder; and the sediment part is added with the ethanol, is heated and is subjected to ultrasonic breaking treatment and centrifugation. Through the three steps, a finished product can be obtained. The method uses the fresh pilose antler as a raw material, has stage extraction of low temperature and high temperature, ensures that enzyme and other biological active substances are not deactivated in the extraction process and simultaneously ensures the full extraction of other effective compositions. Through detection, the prepared product through the method has stable and high activity of SOD, which shows that the active substances in the cell are well stored and the effective compositions have high contents.

The invention belongs to the preparation technology and the catalytic field of nanometer materials, and particularly discloses a synthetic method of an ultrathin self-assembly Pd nanometer wafer. Palladium acetylacetonate is adopted as a precursor, N, N-dimethylformamide and water are adopted as a solvent, polyvinylpyrrolidone is adopted as a stabilization agent, carbon monoxide gas is adopted as a reducing agent, potassium iodide and anhydrous sodium acetate are adopted as a shape control agent, and the ultrathin self-assembly Pd nanometer wafer is obtained in a synthetic manner through an oil bath heating method. In a reaction system, the concentration of palladium acetylacetonate is 8.2 mmol.L<-1>, the molar ratio of palladium acetylacetonate to polyvinylpyrrolidone to potassium iodide to anhydrous sodium acetate is 1:9:4:4, the flow speed of CO is 0.3 mL.sec<-1>, a reaction is carried out in an oil bath of 100 DEG C for 3 h, and the ultrathin self-assembly Pd nanometer wafer is obtained. The synthetic method is simple, pollution is little, the obtained ultrathin self-assembly Pd nanometer wafer is uniform in shape and size, and the prepared ultrathin self-assembly Pd nanometer wafer can be applied to the fields of biological sensing, light conduction, electrochemistry and the like.

The invention discloses nitrile rubber in the technical field of rubber production. The nitrile rubber is prepared from the following ingredients in parts: 100phr of nitrile rubber, 60 to 80phr of carbon black, 30 to 40phr of dioctyl sebacate, 50 to 60phr of modified talcum powder, 5 to 8phr of zinc oxide, 1 to 3phr of stearic acid, 5 to 8phr of coumarone, 2 to 3phr of anti-aging agents RD, 1.5 to 4phr of anti-aging agents 4010NA, 2 to 4phr of dispersing agents, 15 to 20phr of moisture absorbents, 3 to 5phr of sulphur S, 1 to 2phr of accelerators D, 2 to 4phr of accelerators M and 2 to 4phr of accelerators DPTT. According to the vulcanization process, extrusion products are subjected to microwave vulcanization molding through first-section microwave and second-section hot air vulcanization equipment. The nitrile rubber has the advantages that the low-temperature resistant performance is good; the intensity is high; the pressure change is low; the anti-aging performance is realized; the service life is long; the forming is realized through a microwave vulcanization method; the cost is low; the efficiency is high and the finished product rate is high.

The invention relates to the technical field of cleaners and discloses a multi-effect carbon hydrogen cleaner capable of replacing waterborne cleaning and a preparation method thereof. The multi-effect carbon hydrogen cleaner comprises, by weight, 10-20% of special-type surfactant, 01-0.5% of antioxidant, 5-10% of demulsifier and 69.5-84.90% of carbon hydrogen solvent. Adopted raw materials are cosmetic-grade, low-smell to odorless, almost free of aromatic hydrocarbon and sulfur, thereby being harmless to human body, easy in biodegradation and free of residual sense, thereby being harmless tohuman and marine organisms. The cleaner does not contain conventional alcohol-ether compounds, can clean oily stains and can also clean waterborne stains like water, cutting liquid, saponification liquid, waterborne grinding liquid, waterborne polishing liquid, waterborne punching and stretching liquid and waterborne cleaning liquid on workpieces; the cleaner can be distilled and recycled and is emission-free, low in comprehensive cost and supportive of large-scale production.

The invention provides a solid corrosion inhibition capsule and a preparation method and an application method thereof. The solid corrosion inhibition capsule comprises an inner core and an outer coating film wrapping the inner core, wherein the inner core consists of an inorganic nanometer framework, a weighting agent and a corrosion inhibitor in proportion; and the outer coating film is a naturally degradable high-molecular polymer film, can realize slow release of the corrosion inhibitor, and can finally realize thorough degradation in oil well produced liquid, and the dissolution rate of the outer coating film meets the requirement for slow release of corrosion inhibition particles at the bottom of a well for 3 months. According to the preparation method, a twin-screw extruder and a granulator are employed for processing so as to obtain spherical particles with diameters in a range of 1-3 mm; the water content of the particles is controlled between 3% and 8%, so the strength of theparticles can be kept; and the particles can be stably released in water under the condition of a pressure of 10 MPa in indoor evaluation. The corrosion inhibitor is slowly released by utilizing micropores in the solid microcapsules, and the released corrosion inhibitor can be gradually diffused into crude oil of a shaft, so the purpose of long-term corrosion prevention through one-time injectionis achieved.

The invention discloses a combined type special hanger insulation tool for a safety belt. The combined type special hanger insulation tool for the safety belt comprises a hook body. A self-locking mechanism is arranged at the opening of the hook body. The self-locking mechanism comprises a barrel arranged on the hook body. The hook body is provided with a through hole, wherein a sliding rod in the barrel stretches out through the through hole. The sliding rod is connected with the bottom of the barrel through a spring. A round hole allowing a rope to penetrate through is formed in the end of the barrel. A pulley is arranged on the barrel.

The invention relates to a saturable absorber of a laser, which aims at the problems of poor thermal conductivity, low stability, narrow spectral response, complex preparation process, short working life and high production cost of the existing saturable absorber, and provides a preparation method of the saturable absorber and a reflective and transmissive saturable absorber. A method for preparea saturable absorbent comprises that follow steps: 1) dispersing a two-dimensional nanomaterial in a dispersion liquid and performing ultrasonic treatment to obtain a two-dimensional nanomaterial dispersion liquid; 2) place that porous glass in a two-dimensional nano-material dispersion liquid, screen and adsorbing under the ultrasonic condition to form a composite body of the porous glass and thetwo-dimensional nano-material; 3) take out that composite body of the porous glass and the two-dimensional nanometer material and drying; 4) annealing the composite body of the porous glass and the two-dimensional nanometer material after the drying treatment; and 5) cutting and polishing the composite body of the annealed porous glass and the two-dimensional nanometer material to obtain a saturable absorber.

The invention relates to a double-arc irregular shaped inner-cooling type efficient titanium alloy milling tool. High processing difficulty, low cutting efficiency and short service life of a tool are caused by the mutual influence of physical, chemical and mechanical properties of titanium alloy, so that the titanium alloy becomes a typical difficultly processed material. The double-arc irregular shaped inner-cooling type efficient titanium alloy milling tool comprises a tool handle (1), wherein the tool handle (1) is transited to a milling tool bit with a double-arc shape at the front end through a cone (2); a pair of chip pockets (6) with front angle structures are arranged on one side of the tool bit; a cooling liquid channel (5) is arranged at the center of the tool; an outlet of the cooling liquid channel is located on the end part of the tool; and a negative chamfered edge (7) is arranged on the tail part of the tool. The invention is applied to the milling tool.

The invention discloses a rotor punching sheet, which comprises a plurality of magnetic pole areas distributed along the circumference, first magnetic steel grooves and second magnetic steel grooves are arranged in the magnetic pole areas, the first magnetic steel grooves are located at the outer sides of the second magnetic steel grooves, and the midperpendicular of the first magnetic steel grooves and the midperpendicular of the second magnetic steel grooves coincide, and the rotor punching sheet also comprises two third magnetic steel grooves, the two third magnetic steel grooves are distributed at the two ends of the second magnetic steel groove and are symmetrically arranged in a V shape, values of the width L1 of the first magnetic steel groove, the width L2 of the second magnetic steel groove and the width L3 of the third magnetic steel grooves meet the following relation, r1 is the radius of the outermost circle of the rotor punching sheet, and p is the number of pole pairs of the motor; the value of the thickness W1 of the first magnetic steel groove, the value of the thickness W2 of the second magnetic steel groove and the value of the thickness W3 of the third magnetic steel groove meet the following relation: 0.16 * L1 < = W1 < = 0.2 * L1 < = W2 < = 2 * W1 < = W3 < = W2; and on the basis of ensuring the output torque of the motor, the production cost of the motor can be reduced, the sine degree of an air-gap magnetic field is effectively improved, harmonic waves are reduced, and the vibration noise problem is improved, so that the high-performance and low-cost motor design is realized.

The invention discloses a pretreatment method of a crystal before being cut and fixed, which comprises the following steps of: wrapping the crystal to be fixed by 2-3 layers by an adhesive tape; symmetrically arranging at least two metal partitions on a fixed position of the crystal, then tightly adhering by the adhesive tape, wherein the metal partitions have arc-shaped structures, and an radian of a camber surface is matched with a side of the crystal; and placing the crystal into a fixture, and pushing a jackscrew of the fixture into the metal partitions to fix. The pretreatment method of the crystal has the advantage that the phenomenon that the crystal is easy to crack when the crystal is fixed is solved.

The invention discloses powerful shaping pomade and relates to the technical field of pomade. The powerful shaping hair wax comprises, by weight, 6-15 parts of polyethylene pyrrolidone, 3-7 parts of polyethylene glycol esterified lanolin, 4-10 parts of vaseline, 3-7 parts of olive oil, 6-12 parts of mineral oil, 1-3 parts of cyclosiloxane polymer, 4-8 parts of plant wax, 0.5-2 parts of sorbitan oleate, 0.2-1 part of Carbomer, 2-5 parts of cationic surfactant, 1-3 parts of ethylhexyl palmitate, 4-10 parts of cyclopentasiloxane, 0.2-1 part of preservative, 0.2-1 part of essence and 0.2-2 parts of pigment. The powerful shaping pomade can form a tough film on the surface of hair, presents high affinity and adhesiveness to the hair, is easy in shaping, good in setting effect, free of greasy adhesion, high in durability, less prone to being damaged, natural in hand feel, less prone to causing white residue and easy to clean.

The invention relates to a polycarboxylate superplasticizer which is a random copolymer formed by more than or equal to 10% and less than or equal to 20% of unsaturated carboxylic acid A, more than orequal to 45% and less than or equal to 75% of first polyether macromonomer B and more than or equal to 10% and less than or equal to 45% of POSS modified second polyether macromonomer C. According tothe invention, the polycarboxylate superplasticizer has a comb-shaped structure of a traditional polycarboxylate superplasticizer, part of long-chain branch end groups contain POSS groups, and the polycarboxylate superplasticizer can be used as a composite polycarboxylate superplasticizer with good water reducing performance, mud resistance and early strength performance at the same time.

The invention relates to a self-adhesive anti-corrosion resin bitumen waterproof roll material and a preparation method thereof. The self-adhesive anti-corrosion resin bitumen waterproof roll material comprises base material cloth, an oil immersion coating layer, an insulating layer and a membrane laminating layer, wherein the oil immersion coating layer comprises the following materials in part by weight: 80 to 120 parts of bitumen, 20 to 30 parts of styrene-butadiene-styrene (SBS) binder, 3 to 7 parts of ethylene / vinyl acetate (EVA) resin, 8 to 12 parts of polypropylene resin, 2 to 5 parts of polytetrafluoroethylene resin, 20 to 40 parts of petroleum resin, 3 to 8 parts of liquid coumarone resin, 6 to 12 parts of mica powder, 8 to 15 parts of dolomite powder, 5 to 10 parts of attapulgite, 10 to 15 parts of nanometer calcium oxide, 1 to 5 parts of ultraviolet absorber UV-9 and 1 to 5 parts of anti-aging agent 4010 Na. The anti-corrosion performance, high and low-temperature resistance and anti-aging performance of the self-adhesive anti-corrosion resin bitumen waterproof roll material are superior to those of the ordinary waterproof roll material, and the self-adhesive anti-corrosion resin bitumen waterproof roll material is mainly used for buildings such as undergrounds, tunnels, bridges, subways, planted roofs and the like which have higher waterproof requirements.

The invention relates to relates to mortar for exterior facing and belongs to the technical field of mortar in chemistry. The mortar for the exterior facing is prepared from the following components by mass: component I: 90-110 parts of a mixture of 90% of ordinary Portland cement and 10% of coal ash or 10% of limestone powder; component II: 90-110 parts of a mixture of one part of medium sand with particle size being 0.5-0.35 mm and two parts of superfine sand with particle size being 0.25 mm or less; component III: 40-45 parts of water; component IV: 0.4-0.6 parts of EVA latex powder. The mortar for the exterior facing is prepared by steps as follows: mixing the component II with the EVA latex powder evenly, adding part of water in the component III for mixing, and adding the component I and all remaining water in the component III for mixing after the medium sand and the superfine sand are completed covered with the EVA latex powder. The mortar for the exterior facing has the advantages of good cohesive force, small shrinkage value and good weather resistance.

The invention discloses an anti-radiation fabric and a treatment method thereof, and the treatment method comprises the following steps: taking cotton fibers with the diameter of 0.01-0.05 mm, adding the cotton fibers into deionized water containing 5-20 g / L of smoothing agent, controlling the weight bath ratio to be 1: (10-15) and the temperature to be 30-50 DEG C, carrying out softening treatment for 20-30 minutes, and finally dehydrating and drying to obtain modified cotton fibers for later use; taking metal wire fibers with the diameter of 0.015-0.025 mm, carrying out annealing treatment, and then uniformly loading anti-radiation synergistic particles on the surfaces of the metal wire fibers subjected to annealing treatment to obtain modified metal wire fibers for later use; and blending the modified cotton fibers and the modified metal wire fibers according to the dosage ratio of (2-5): 1 to finish the treatment. According to the treatment method, the cotton fibers are subjected to softening treatment, and the metal wire fibers are subjected to annealing treatment, so that the treated fabric is soft and smooth in texture, high in wearing comfort and very suitable for various industries; and according to the treatment method, the anti-radiation synergistic particles are uniformly loaded on the surfaces of the metal wire fibers, and the anti-radiation efficiency of the treated fabric is remarkably improved.

The invention relates to a high-toughness mortar for exterior facing, and belongs to the technical field of mortar in chemistry. The high-toughness mortar for exterior facing comprises the following components in parts by mass: 90-110 parts of component 1, 90-110 parts of component 2, 40-45 parts of component 3, 0.4-0.6 part of component 4 and 0.02-0.06 part of component 5, wherein the component 1 is a mixture of 90% of ordinary silicate cement and 10% of coal ash powder or 10% of limestone powder; the component 2 is superfine sand of which the particle size is below 0.25mm; the component 3 is water; the component 4 is EVA (ethylene-vinyl acetate) latex powder; and the component 5 is 10-19mm light weight short fiber. A preparation method of the high-toughness mortar for exterior facing comprises the following steps: uniformly stirring the superfine sand of which the particle size is below 0.25mm and the EVA latex powder; then adding part of the water in the component 3; stirring until the superfine sand is completely wrapped by the EVA latex powder; adding the component 1, the component 5 and the remaining water in the component 3 altogether; and stirring to obtain the finished product. The high-toughness mortar for exterior facing has the advantages of favorable binding force, small shrinkage value and good weather resistance.

The invention discloses aeration equipment for large-range water area culture, and relates to the technical field of oxygenation equipment. The equipment comprises a waterwheel base body and an aeration oxygenation device, and is characterized in that the waterwheel base body comprises a floating platform formed by connecting a plurality of parallel metal rods, the floating platform is composed of an upper-layer plastic hard board and a lower-layer floating body, the metal rods are connected to the hard board through bolts, a power device is installed on the metal rod in the center of the front portion of the waterwheel base body, a main shaft vertically extends out of the bottom layer of the power device from the two sides, the main shaft is connected with impellers and the power device, the impellers are located on the two sides of the waterwheel base body, and the top of the driving device is connected with the bottom of a vertical metal bar; and the aeration oxygenation device comprises an aeration pump located on the waterwheel base body, the aeration pump is fixed to the metal rod in the center of the rear end of the waterwheel base body, the center of the lower portion of the aeration pump is connected with a vertical air conveying pipe, a hose extends out of the bottom end of the air conveying pipe to be connected with a flow divider, and the flow divider is provided with an annularly-coiled nanometer aeration pipe. The problems of poor oxygenation efficiency, low moving efficiency and high cost are solved.

The LED ceiling lamp convenient to mount quickly comprises a lamp panel, a lampshade and a mounting block, the mounting block is mounted at the top of the lamp panel, a second reserved groove is formed in the mounting block, a spring is mounted in the second reserved groove, a sliding groove is formed in the top of the mounting block, a T-shaped buckle is mounted on the sliding groove, and the T-shaped buckle is connected with the lampshade. A mounting piece is mounted at the top of the mounting block, and a T-shaped groove corresponding to the T-shaped buckle is reserved in the mounting piece. The handle is installed at one end of the spring, force is applied to the handle, the spring at the other end of the handle is made to contract inwards, the T-shaped buckle is installed in the sliding groove in the top of the installation block, the T-shaped buckle moves on the sliding groove, the diameter of the T-shaped buckle is smaller than that of the T-shaped groove, and therefore the lampshade at the bottom can be easily installed, and when force disappears, the spring recovers to the original shape; therefore, the T-shaped buckle is just buckled with the T-shaped groove, the installation speed is increased, and the construction difficulty is reduced.

The invention discloses a fermented soya bean processing technology in the technical field of food preparation. The fermented soya bean processing technology comprises the following steps of: selecting soybeans, soaking, draining, cooking, fermenting and drying, the soaking conditions are as follows: the pH value of the bean soaking water is 7.7-7.9, the bean soaking water temperature is 365-369 DEG C, the ratio of the bean amount (g) to the water amount (mL) is 1: 4, and the bean soaking time is 8-10 hours; the cooking conditions are as follows: mixing the soaked soybeans with bran, adding clear water, uniformly mixing, wrapping with gauze, and sterilizing at 121-126 DEG C for 30 minutes; and the fermentation conditions are as follows: adding edible salt and bacillus natto into the cookedsoybeans, uniformly mixing, and then putting the mixture into a fermentation cylinder for fermentation. In the application, the bean soaking time is 8-10 hours, so that the bean is 90% expanded without wrinkles, the water content is 46%-50%, and the bean is suitable for cooking sterilization. When the soaked soybeans are cooked, bran is added for mixing, and the added bran not only provides nutrition, but also plays roles in dispersing the soybeans, loosening and ventilating. In addition, the fermentation cylinder provided by the invention increases the mould production speed, accelerates thefermentation process, and shortens the fermentation time of the fermented soya beans.

The invention discloses a preparation method for a low-cost and high-efficiency catalyst for the production of methyl methacrylate. The catalyst is made by a polymer protection method and is a loaded catalyst with an active center loaded on a carrier. The active center includes gold and a Rare earth metal, carrier is SiO 2 ,SiO 2 ‑Al 2 O 3 ,CaCO 3 , carbon materials, and molecular sieve materials; the loading of gold in the catalyst is 0.05wt%-0.98wt%, and the loading of rare earth metals is 1wt%-2.5wt%. The preparation method adopted in the present invention can obtain a gold particle catalyst with uniform particles and high activity. The preparation process is simple, the operation is convenient, the loading of active components is low, and it has excellent activity and good stability. The preparation cost of the catalyst is low. The conversion rate of methacrolein and the selectivity of MMA are high and suitable for industrial production.

The invention relates to biomass burning equipment, particularly relates to a biomass particle conveying device, and provides a particle conveying device which is simple in structure, and convenient to process and improves the working efficiency. The particle conveying device comprises a box body and a pair of swinging mechanisms, wherein a conveying mechanism is arranged at the upper part of thebox body, and a driving mechanism is arranged at the lower part of the box body; the conveying mechanism comprises a vertical bin which is vertically arranged, and an auger bin which is horizontally arranged and communicates with the vertical bin; the auger bin is fixedly arranged in the box body, and an auger rod is arranged in the auger bin; a secondary gear is arranged at the driving end of theauger rod; the driving mechanism comprises a motor and a base; the motor is arranged on the base through a mounting seat; the base is fixedly arranged in the box body; a main gear is arranged on a rotating shaft of the motor; and a rack is arranged between the main gear and the secondary gear. The device is convenient to operate, and high in reliability.

The invention relates to the technical field of lake side slope reinforcement, in particular to a lake side slope stabilizing and reinforcing device and method based on the biological guiding technology, the lake side slope stabilizing and reinforcing device comprises a green reinforcing plant and a pre-buried lantern ring arranged at the root of the green reinforcing plant, and the root system of the green reinforcing plant penetrates through the pre-buried lantern ring; a built-in cavity is formed in the pre-embedded lantern ring, a plurality of evenly-distributed airflow through holes are formed in the upper end of the pre-embedded lantern ring and communicate with the built-in cavity, a plurality of evenly-distributed adsorption guide ropes are installed at the bottom end of the pre-embedded lantern ring in an embedded mode, and the ends, away from the pre-embedded lantern ring, of the adsorption guide ropes are connected with bolting ropes; earthworms are bolted to the outer ends of the bolting ropes. According to the device, the life activity of the root system of the green reinforcing plant single-sided magnetic balls can be improved by means of heat, so that the growth of the plant root system is accelerated, the firmness of the lake side slope is improved, and the distribution range of the bolting rope single-sided magnetic balls and the adsorption guide rope single-sided magnetic balls is widened by means of heat dissipation.

The invention provides a method for isolating and purifying high-efficiency petroleum hydrocarbon-degrading bacteria from crude oil-contaminated soil, which comprises mixing and culturing inorganic salt culture medium and high-oil-containing soil samples, and using thin oil / inorganic salt culture medium to culture the culture solution after mixed culture Carry out acclimatization culture, and then use thick oil / inorganic salt medium to carry out acclimatization culture on the culture solution after acclimatization culture, the obtained culture solution is diluted and spread on crude oil / inorganic salt solid plate medium and cultivated; and then purified to obtain For purified strains with consistent morphology, culture the purified strains in beef extract peptone medium, inoculate the resulting bacterial liquid into crude oil / inorganic salt liquid medium for crude oil degradation experiments; determine the crude oil degradation rate of the purified strains, and select the crude oil degradation rate Larger strains. The method can obtain petroleum hydrocarbon degrading bacteria capable of broad-spectrum degrading various components in crude oil, and has wide applicability and high use value.