40results about How to "High speed stirring" patented technology

The invention relates to a catalyst used in preparation of long-chain alkane through catalytic hydrodeoxygenation of biomasses such as microalgae oil, palm oil and plant oil. The catalyst mainly comprises two active ingredients: an acid center of a carrier containing a transition metal and a hydrogenation activity center of the metal, wherein the acid center of the carrier containing the transition metal is used for dewatering an intermediate product generated in biomass hydrogenation, is used as a strong Lewis acid center simultaneously, and has the very strong oxyphilic capacity, so that an important role in hydrogenolysis of a C-O bond is developed. According to the catalyst disclosed by the invention, for example, in the hydrodeoxygenation process of the palm oil, the plant oil and the microalgae oil, the raw material conversion rate can reach 100 percent and the alkane selectivity is more than 90 percent. According to the catalyst disclosed by the invention, the high-selectivity preparation of the long-chain alkane is realized under a relative mild condition, and the problems of rigorous reaction conditions, low energy efficiency, and low high-carbon alkane selectivity in the process of preparing the long-chain alkane from the biomasses are solved.

The invention discloses a high-stain-resistant antibacterial modified antirust agent, which is prepared from the following raw materials including phosphoric acid, polyethylene glycol, zinc naphthenate, ammoniacal copper quat type B, sodium hexametaphosphate, nanometer silicon dioxide, sodium sulfonate, dodecencylsuccinic acid, malthene, benzotriazol, sodium alkenyl sulphonate, trimeric sodium phosphate, sodium metasilicate, sodium nitrite, diammonium hydrogen phosphate, triethanolamine, anti-oxidant antibacterial agents, stain-resistance enhancing agents, antibacterial enhancing agents, degreasing agents and deionized water. The modified antirust agent has the excellent high-stain-resistant antibacterial performance; the antirust performance is good.

The invention relates to two-component waterborne epoxy silver powder paint as well as a preparation method and application thereof, and belongs to the technical field of environment-friendly waterborne paint. The two-component waterborne epoxy silver powder paint comprises a main agent and a curing agent, the main agent comprises the following components in percentage by weight: 40-70% of waterborne epoxy resin dispersion, 4-8% of liquid epoxy resin, 2-6% of anti-sagging resin, 10-20% of lithium magnesium sodium silicate solution, passivated aluminum silver paste and 0.5-6% of auxiliaries; the curing agent comprises the following components in percentage by weight: 40-60% of aliphatic amine adduct, 3-5% of cosolvent, 0.3-3% of assistant and the balance of deionized water. The two-component epoxy water-based silver powder paint has the following advantages of being good in stability and weather resistance, low in VOC content, free of pungent smell, low in price and wide in application range; the curing agent has moderate viscosity after being treated, is bubble-free after being stirred at high speed and can be instantly packaged; the main agent and the curing agent are good in mixing compatibility, better in constructability, long in activation period, good in sagging resistance, high in gloss and good in weather resistance and salt fog resistance.

The invention relates to a synthesis method of polyurethane modified organic silicone oil, which comprises the following steps: carrying out a reaction on hydrogen-terminated silicone oil with allyl epoxy polyether under the action of a catalyst to obtain epoxy polyether modified silicone oil, adding amino-terminated polyether, and reacting to obtain amino polyether modified organic silicone oil,and then carrying out a reaction with an isocyanate group terminated isophorone diisocyanate polypropylene glycol polyurethane prepolymer to obtain the polyurethane modified organic silicone oil. Thepreparation method has the main beneficial effects that (1) the adsorption performance of the organic silicon oil is well improved by embedding the polyurethane chain segment, the polarity of the polymer is increased, the emulsifying performance of the modified organic silicon oil is greatly improved, and the emulsion stability is excellent; (2) the modified silicone oil obtained by the method hashigher polymerization degree, and the prepared finishing agent has softness, elasticity, excellent washability and hard water resistance; and (3) the raw materials are easy to obtain, the process issimple, and the product is stable.

The invention discloses a multi-color photocuring 3D printing pen. The multi-color photocuring 3D printing pen is characterized by comprising a printing pen body (1) and a primary color material box (24), wherein the primary color material box (24) is used for feeding raw materials with three primary colors stored in the primary color material box (24) into the printing pen body (1) through a feeding tube; the raw materials are stirred and mixed by a stirring module mounted in the printing pen body, and are conveyed into a pen point (11) positioned at the outlet end of the printing pen body (1) through a spiral conveying module for printing a 3D material object with required color; a light source (12) for carrying out quick photocuring on the printed 3D material object is arranged at the periphery of the pen point (11) at the outlet end of the printing pen body (1); and the stirring module and the spiral conveying module adopt the same motor (2) as power, so that rotation speed of the stirring module is greater than that of the spiral conveying module. The multi-color photocuring 3D printing pen is simple in structure, is small in size and is convenient to operate, and can effectively solve the problem that the product printed by the 3D printing pen has pure color.

The invention relates to the technical field of UV coatings and particularly relates to an antibacterial and iodine-tincture-resistant UV coating applied to PVC floors. The coating is prepared from the following components in percentage by mass: 40-50% of photosensitive resin, 20-30% of a cross-linking agent, 5-10% of a photoinitiator and 8-25% of additives, wherein the additives comprise a flatting agent, a dispersant and an antioxidant; the dispersant is organosilicon-modified acrylate. Compared with the prior art, the additives are added into the UV coating, so that the PVC floors have extremely excellent properties of antibacterial property and iodine tincture resistance, so that the labor cost and the economic cost consumed in daily cleaning and maintenance of hospitals are greatly reduced.

The invention relates to the technical field of extracting plant sterols, in particular to a method for separating and purifying plant sterols from seabuckthorn seeds. The method specifically comprises the steps of seabuckthorn seed smashing and drying, ultrasonic-assisted leaching and suction filtration, vacuum concentration, saponification, cooling, extraction, water washing, concentration, water bath reflux, recrystallization, washing, centrifugation and drying. Compared with the prior art, the method for separating and purifying the plant sterols from the seabuckthorn seeds has the advantages of simple operation method, low equipment requirement, low cost of reagents, low energy consumption, and high extraction rate of seabuckthorn seed oil, and the highest extraction rate can reach to12.98%, seabuckthorn sterol has a high purity of up to 1.487%, and the method for separating and purifying the plant sterols from the seabuckthorn seeds is suitable for use in small and medium-sizedproduction and processing enterprises in laboratories or production.

The invention discloses a lithium titanate silicon-based composite negative electrode material and a preparation method thereof. The material comprises an inner core and an outer shell coating the inner core, and the core-shell type lithium titanate silicon-based composite negative electrode material is formed. The inner core is composed of an organic carbon matrix filled and/or coated porous nanosilicon/nano lithium titanate material, and the outer shell is an organic pyrolytic carbon layer. The preparation method of the lithium titanate silicon-based composite negative electrode material comprises the following steps: mixing and ball-milling silicon powder and lithium titanate; then carrying out spray drying, then carrying out gas-phase carbon coating, solid-phase carbon coating and crushing to obtain lithium titanate silicon-based composite material. The lithium titanate silicon-based composite negative electrode material has the advantages that the lithium titanate silicon-based composite negative electrode material is excellent in cycle performance and rate charge and discharge performance and low in volume expansion, and accordingly requirements of commercial customers on long service lives and long cycles can be effectively met.

The invention discloses a polyamide-polypropylene blend and a preparation method thereof, comprising 25-30 parts by weight of polyamide, 5-10 parts of polypropylene, 2-3 parts of compatibilizer, and 3 parts of toughening agent ‑4 parts and 5‑7 parts of talcum powder are blended. Compared with the prior art, the polyamide-polypropylene blend of the present invention improves the compatibility of polyamide and polypropylene by adding compatibilizer, toughening agent and talcum powder in polyamide and polypropylene blend , to avoid uneven dispersion of polyamide and polypropylene, so that the polyamide-polypropylene blend has better mechanical properties.

The invention provides a method for assisting dual wires in additive in-situ synthesis of a NiTi shape memory alloy based on electron beam scanning. The method comprises the following steps: determining a deposition path of a target NiTi alloy component; taking a pure Ni wire and a pure Ti wire as printing wire materials, taking a NiTi alloy plate as an additive substrate, and performing fixing; determining the spatial positions of the pure Ni wire and the pure Ti wire in a vacuum chamber; starting a vacuum pump set; setting electron beam fuse wire additive manufacturing parameters, and controlling electron beam deflection scanning; and determining the wire feeding speed of the pure Ni wire and the pure Ti wire according to the target NiTi alloy component, performing layer-by-layer printing according to the set deposition path, and obtaining the target NiTi alloy component after all layers are completed. According to the method, the NiTi alloy component which is high in purity, homogeneous, compact and excellent in performance can be flexibly and efficiently prepared according to the requirements of the components.

The invention relates to the technical field of reaction kettles, in particular to a multipurpose reaction kettle for chemical production, and overcomes the defect that the discharge port of an existing reaction kettle is easy to block. The multipurpose reaction kettle comprises a kettle body, a feeding port is formed in the top of the kettle body, a discharge port is formed in the bottom of the kettle body, and a heating sleeve is arranged on the outer side of the bottom of the kettle body. An electric heating pipe is installed in the heating sleeve, an inner cooling coil pipe is further arranged in the kettle body, an L-shaped connecting plate is further fixed to the inner side of the top of the kettle body through bolts, a stirring rod is connected to the interior of the connecting plate through a bearing, and stirring blades are installed at the end of the stirring rod; an anti-blocking motor drives a rotating rod which is in bearing connection with the interior of a top plate to rotate, so that the rotating rod drives a telescopic rod which is in threaded connection with the outer part of the rotating rod to penetrate through a stirring rod and stretch out and draw back at the outer part of the bottom end of the stirring rod, and an anti-blocking head at the end part of the telescopic rod is used for dredging a discharge port, the problem that reactant precipitates block the discharge port of the kettle body is effectively prevented, and the practicability is high.

The invention relates to the fields of functional high-molecule technology and fertilizer preparation, and discloses a molasses fermentation waste liquid organic sustained-release fertilizer and an application thereof. The organic sustained-release fertilizer comprises nutrient elements such as nitrogen, phosphorus and trace elements. According to the invention, a feather waste is subjected to oxidation modification with a chemical method, such that feather protein with polycationic characteristics is prepared; the feather protein is used for modifying sodium alginate with polycationic characteristics. The modified sodium alginate is adopted as a carrier of the sustained-release fertilizer. A molasses fermentation waste liquid is adopted as a sustained-release fertilizer component. Therefore, the molasses fermentation waste liquid organic sustained-release fertilizer is prepared. The invention provides an approach for solving the problem of the pollution to the ecological environment caused by the feather waste and the molasses fermentation waste liquid, such that waste is turned valuable. Waste resource is reasonably utilized, and green and environment-friendly economic benefit is provided. With the application, environment-friendly organic sustained-release fertilizer can be prepared with a low price. The fertilizer can be applied in the fields of agriculture and forestry, environment protection, animal husbandry, crop farming and the like.

The invention discloses a pretreatment method and device for circuit board heat dissipation ink. The method comprises the steps: S1, thermosetting graphene ink and a defoaming agent are poured into astirring barrel in proportion; S2, the printing ink in the stirring barrel is subjected to shear type stirring under the condition that the rotating speed is larger than or equal to 1000 RPM, and thestirring time is larger than or equal to 10 min; and S3, the stirred ink is cooled to room temperature. The device comprises a support, a stirring motor arranged on the support, and a stirring barrelarranged below the support; the stirring motor is connected with a shearing type stirring head, and the rotating speed of the stirring motor is larger than or equal to 1000 RPM. According to the pretreatment method and device disclosed by the invention, the defoaming agent is added when the thermosetting graphene ink is stirred, elimination of bubbles in the ink can be facilitated, the thermosetting graphene ink is stirred at a high speed, graphene can be uniformly distributed in the ink, stirring can be performed in a non-vacuum environment, expensive vacuum stirring device is not needed, andreduction of the production cost can be facilitated.

The invention discloses an extraction method of a Hedyotis diffusa Willd. anti-cancer active component. The method includes: taking a Hedyotis diffusa Willd. whole plant as the raw material, extracting it 2-3 times with n-hexane, conducting pumping filtration to separate an n-hexane extraction solution and a residue, and extracting the residue 2-3 times with 85-95% ethanol so as to obtain ethanol extraction solutions; combining the ethanol extraction solutions, and carrying out concentration to obtain an extract; and re-suspending the extract in deionized water, then carrying out extraction with ether and ethyl acetate respectively, combining and concentrating the extracted substances, subjecting the mixture to silica gel column chromatography, performing gradient elution with n-hexane-dichloromethane and dichloromethane-ethyl acetate respectively, collecting the n-hexane-dichloromethane-ethyl acetate elution solution, and performing concentration and drying by evaporation, thus obtaining the Hedyotis diffusa Willd. extract. According to the invention, by means of ethanol solution extraction, liquid-liquid extraction enrichment and silica gel column chromatography purification, the method prepares the Hedyotis diffusa Willd. anti-cancer active component with increased content of free anthraquinone and total tritepenoidic acid, as well as substantially improved anticancer activity.

The invention discloses a high-efficiency vertical dry stirring mill and its application. The mill comprises a casing, a screw feeder, a grinding drum, a main shaft, a stirrer, an activated lining plate, a discharge device, a driving device, a powder selection Machine and air supply device; the powder separator, screw feeder, grinding drum, discharge device, driving device, the coarse particle return pipe of the powder separator and the discharge of the screw feeder are installed in the shell from top to bottom. The ends are connected with the top of the grinding cylinder, the grinding cylinder is provided with a main shaft and a stirrer, the agitator is fixed on the main shaft, the inner wall of the grinding cylinder is provided with an activated lining plate, and the discharging device is arranged at the bottom of the grinding cylinder and fixed on the main shaft; the main shaft is The bottom is connected with the driving device; the space between the grinding cylinder and the outer casing forms an annular air chamber, and the air supply device is arranged below the discharging device and faces the annular air chamber. The invention has high grinding efficiency, good separation effect of finished products, no over-grinding phenomenon, good heat dissipation, precise control of product fineness, reduced energy consumption, and improved equipment reliability and stability.

The invention discloses a juice machine which comprises a cup body, a cup seat, a machine body, an electrically-driven transmission device and a blade, wherein the cup body, the cup seat and the machine body are sequentially assembled, the blade is positioned in the cup body and used for rotary crushing, and the electrically-driven transmission device comprises an electromotor, a clutch and a cutter-shaft seat; and the blade is installed on the central rotating shaft of the cutter-shaft seat positioned on the cup seat, the cutter-shaft seat and the clutch are in detachable clamping connection, the electromotor is assembled in the machine body, the rotating shaft of the electromotor and the clutch are installed through tight fit, the electromotor is electrically connected with an electronic control system with the action of overheating and overcurrent double protection, and a cup cover is matched with and arranged on the cup body. The juice machine has the functions of double overheating and overcurrent protection, multi-gear speed regulation and electric ice crushing, has the advantages of simple operation, uniform stirring and novel appearance design and shows luxury and elegance.

The invention provides a stirring device and a biochemical analyzer. The stirring device comprises a stirring body and a driving mechanism, wherein the stirring body is arranged in a cuvette and comprises a main body, and the main body is made of magnet or ferro magnetic material; and the driving mechanism is arranged outside the cuvette, the driving mechanism drives the stirring body to move in the cuvette. The stirring device and the biochemical analyzer provided by the invention drive the stirring body in a non-contact manner, are simple in structure, and can stir liquid in the cuvette at high speed.