27results about How to "Not easy to adsorb" patented technology

The invention relates to a virus DNA and RNA co-extraction kit and an extraction method, and belongs to the technical field of biology. By matching the lysate, the rinsing liquid and other solutions with the extraction method, the method can directly extract viral nucleic acids (DNA and RNA) in cell-free body fluids of human and animals, such as centrifugal supernatant of serum, plasma and tissue grinding fluid. According to the method and the kit, DNA and RNA can be extracted at the same time, operation is easy, particularly, the nucleic acid extraction sensitivity of the small viruses is high, and the extraction effect is better.

The invention relates to the technical field of plastic materials, and discloses a plastic material for a Bluetooth headset shell and a preparation method of the plastic material. The plastic material for the Bluetooth headset shell is prepared from the following raw materials in parts by weight: 30 to 50 parts of polycarbonate, 25 to 45 parts of ABS (Acrylonitrile Butadiene Styrene) resin, 5 to 12 parts of a MoS2 / PDA / TiO2 composite material, 8 to 15 parts of a toughening agent, 0.1 to 0.5 part of a lubricating agent, 0.3 to 0.8 part of an antioxidant 1010 and 0.5 to 1 part of a macromolecular antistatic agent. The material is prepared by taking ABS (Acrylonitrile Butadiene Styrene) resin and polycarbonate as matrix resin, adding an auxiliary agent and carrying out melt blending, wherein due to the addition of the MoS2 / PDA / TiO2 composite material, the wear resistance and the scratch resistance of the matrix are improved; by adding the macromolecular antistatic agent, the antistatic performance of the matrix is improved, and the adsorption of dust on the surface of the material is reduced.

The invention provides a hydrogen purification device and method. The device comprises a feed gas compressor unit and a desulfurization unit, the device further comprises a hydrogen purification unit; the input end of the hydrogen purification unit is connected with the output end of the feed gas compression unit through the desulfurization unit; one path of the output end of the hydrogen purification unit is connected with a downstream supply end; the other path of the output end of the hydrogen purification unit is connected with the input end of the feed gas compressor unit through a return pipe; wherein the hydrogen purification unit consists of a rotary valve, a packed bed group, a filter, a hydrogen buffer tank and a flow meter; the rotary valve controls the packed bed group to separate hydrogen from desulfurized feed gas, and the hydrogen is input into a supply end through the filter, the buffer tank and the flowmeter in sequence; when the supply end stops working, the separated hydrogen flows back to the feed gas compressor unit through the return pipeline; the technical problems that in the traditional hydrogen purification process, energy consumption is high, operation is complex, and purification efficiency is low are solved.

The utility model discloses an air purifier which comprises an outer shell, an upper cover, an air inlet net, an air cabinet, a fan, a controller, a filter screen, a base, an air outlet net and a rotary cover. An upper cover is detachably installed on the top of the outer shell, an air inlet net is detachably arranged between the upper cover and the outer shell, the fan and the controller are both installed on the inner side of the air cabinet, the air cabinet is fixedly installed in the middle in the outer shell, a base is fixed to the bottom of the outer shell, a filter net located on the lower portion in the outer shell is installed on the upper side of the base, and an air outlet is reserved in one side of the bottom of the outer shell. And an air outlet net is arranged in the air outlet. Compared with the prior art, the air purifier has the advantages that when the air purifier is used, indoor air enters from the top of the air purifier, dust, bacteria and the like floating in the indoor air can be more effectively adsorbed in a top surface air inlet mode, and the detachable upper cover enables the air inlet net to be conveniently assembled and disassembled, so that the air inlet net is conveniently cleaned or replaced regularly, and the air purifier is convenient to use. And when the air is finally discharged from the two air outlets, dust on the ground is not easily adsorbed on the air outlet net.

The utility model belongs to the field of glue curing, and discloses a glue curing device which comprises a protective cover, a UV light source and a vacuumizing assembly, the UV light source is arranged on the protective cover through a movable supporting component, and one end, provided with the UV light source, of the movable supporting component penetrates into the protective cover. The vacuumizing assembly is arranged on the protective cover and communicates with the inner side of the protective cover, and a sealing rubber strip is arranged at the bottom of the protective cover along the circumferential edge side. According to the utility model, glue can be cured in a vacuum state, so that the surface of the glue is smooth, dust and water vapor are not easy to adsorb, the operation reliability of the laser is improved, and the service life of the laser is prolonged.

The invention relates to an exhaust valve which comprises an air valve shell and an exhaust cover matched with the air valve shell, and is characterized in that an exhaust hole is formed in the exhaust cover, the exhaust valve further comprises a valve cover arranged on the upper side of the exhaust cover, an exhaust hole communicated with an exhaust port of the exhaust cover is formed in the valve cover, the valve cover further comprises a wrapping cavity, and the wrapping cavity is communicated with the exhaust port of the exhaust cover. A valve rod and an exhaust nozzle are arranged in the wrapping cavity, the valve rod is in sealing fit with the wrapping cavity and can move in the wrapping cavity, the exhaust hole is opened when the valve rod moves to the position away from the exhaust hole, and the exhaust hole is closed when the valve rod blocks the exhaust port. The position of the valve rod can be adjusted by rotating the screw. According to the novel exhaust valve, the valve rod is of a double-sealing structure, and the sealing performance is good; by adjusting the position of the valve rod, lateral exhaust of the exhaust valve can be achieved, and the problem of exhaust water leakage is solved.

A self-series tubular membrane module relates to the technical field of tubular membranes and comprises a membrane shell, permeate outlets are respectively arranged at positions, close to two ends, outside the membrane shell, a certain number of membrane tubes and lining tube sleeves are arranged inside the membrane shell, lining end plates are arranged in ports at two ends, end covers are arranged at two ends of the membrane shell, and connecting shafts are arranged between the lining end plates and the end covers. A locking nut is arranged at the outer end of the connecting shaft, water inlet and outlet connectors are symmetrically arranged on the end covers on the two sides of the locking nut, a certain number of 180-degree elbows are arranged in the end covers, and the two ends of the membrane tube are communicated with the 180-degree elbows and the water inlet and outlet connectors. The tubular membrane component adopts a self-series structure design, so that the end head of the membrane component is provided with a 180-degree elbow, and the turbulence degree in the membrane tube is increased when the membrane component passes through the area every time, so that materials are not easily adsorbed on the surface of the membrane, and the concentration polarization is reduced.

The invention relates to the technical field of elastic floor tile materials, in particular to an elastic floor tile material prepared based on silicone rubber modification and a preparation method of the elastic floor tile material. Maleic anhydride grafted polypropylene and ethylene propylene rubber serve as main raw materials to prepare an elastomer base material, and a compact cross-linked network structure can be formed in the material; the high-strength elastic base material can effectively resist the impact of external force; in the preparation process of the floor tile material, raw materials and processes which are harmless to human bodies are adopted, so that the floor tile material is soft and comfortable in surface touch feeling, does not cause irritation or harm to skin, and is particularly suitable for places needing to frequently contact with the human bodies; therefore, the elastic floor tile material prepared based on silicone rubber modification has excellent physical and mechanical properties, excellent weather resistance, environmental protection, safety, diversified application scenes and personalized customization capability.

The utility model discloses a convenient temperature and humidity detector, which relates to the technical field of temperature and humidity detection, and comprises a detector main body, one end of the detector main body is provided with a temperature and humidity probe, the outside of the temperature and humidity probe is provided with a protective cover, and the outer surface of the protective cover is provided with a ventilation groove. The lower end of the detector body is provided with a carrying assembly, the lower surface of the detector body is provided with two moving grooves, one end of each moving groove is provided with a limiting groove, the carrying assembly comprises a carrying frame, and one end of the carrying frame is provided with a connecting baffle plate. According to the scheme, the problems that most of existing convenient temperature and humidity detectors are directly held and taken by hands, lack of hand limiting structures, easy to fall off from the hands and damage, low in safety performance and limited in placement application range and poor in flexibility and applicability due to the fact that the existing convenient temperature and humidity detectors can only be placed on a plane during placement are solved.

The utility model relates to the field of portable vehicle-mounted cleaning machines, and discloses a portable vehicle-mounted cleaning machine which comprises a main body, a bottom plate is fixedly arranged at the lower end of the main body, a plurality of universal wheels are fixedly arranged at the lower end of the bottom plate, and first handles are fixedly arranged at the two ends of the upper side of the bottom plate. A lifting handle is fixedly arranged in the middle of one end of the upper side of the bottom plate, a placing mechanism is fixedly arranged at one end of the upper side of the main body, the main body comprises a second shell, a second groove position is formed in one end of the inner side of the second shell, the placing mechanism comprises a first shell, and a fixing plate is movably arranged at one end of the inner side of the first shell. According to the device, more mechanisms of the device can be conveniently installed through the main body, the mechanism at the upper end can be conveniently fixed through the bottom plate, the mechanism can be conveniently moved in multiple directions through the universal wheels, an operator can conveniently carry the mechanism through the first handle, the operator can conveniently push and pull the mechanism through the lifting handle, and objects can be conveniently placed through the placing mechanism.

The present invention discloses a method for deep dearomatization of low-quality diesel. The method comprises the following steps: (1) low-quality diesel feedstock and hydrogen enter a first reactor to carry out a gas phase desulfurization reaction; (2) the effluent of the first reactor enters a second reactor after being pressurized, wherein the gas phase component is discharged upward from the second reactor, and after being treated with desulfurized hydrogen, a hydrogenated light component is obtained, and the liquid phase component is subjected to a liquid phase hydrogenation dearomatization reaction downward to obtain a hydrogenated heavy component which is discharged from the bottom of the second reactor; (3) the hydrogenated heavy component is mixed with the hydrogenated light component to obtain a refined diesel product. The method of the present invention can achieve the effect of deep dearomatization, and at the same time, it also simplifies the process flow, reduces the reaction severity, and improves the chemical reaction efficiency in general.

The invention discloses an electrochemical biosensor as well as a preparation method and application thereof, belongs to the technical field of detection, and aims to improve the detection sensitivity, specificity and detection accuracy of key biochemical substances of neurodegenerative diseases. The sensor comprises a substrate layer, a liquid inlet, a liquid outlet, a reference electrode and a counter electrode, the substrate layer comprises a PDMS flexible lower cover layer, a P3HT-Cu NWs conductive sensitive layer and a PDMS flexible upper cover layer, a micro-channel layer is arranged on the PDMS flexible upper cover layer, a channel is arranged in the micro-channel layer, and the P3HT-Cu NWs conductive sensitive layer is connected with a flexible flat cable. The preparation method comprises the following steps: preparing Cu NWs, preparing a P3HT-Cu NWs mixed solution, preparing a PDMS flexible lower cover layer, coating the PDMS flexible lower cover layer with the P3HT-Cu NWs mixed solution to obtain a P3HT-Cu NWs conductive sensitive layer, preparing a PDMS flexible upper cover layer, and bonding and sealing the PDMS flexible lower cover layer and the PDMS flexible upper cover layer to obtain the substrate layer.

The utility model discloses polyester fabric with flame-retardant capability. The polyester fabric comprises a polyester layer, the flame-retardant polyester fabric comprises a polyester fabric outer layer and further comprises a flame-retardant layer which is arranged at the upper end of the polyester fabric outer layer, the flame-retardant layer is connected with the polyester fabric layer in a bonding mode, an aluminum foil is arranged in the middle of the interior of the flame-retardant layer, basalt fibers are arranged at the upper end of the aluminum foil, and high silica cotton is arranged at the lower end of the aluminum foil. A fire source directly heats the surface of polyester through heat radiation, the temperature of the surface of polyester fabric rises until the temperature of the polyester fabric reaches the melting point temperature, the polyester fabric is damaged, polyester fabric products directly make contact with the body, part of people may be allergic to polyester fibers, and allergic reaction may be caused after the polyester fibers are in contact with the polyester fibers. The symptoms of erythema, papule, pruritus and the like are caused, and the problems of palpitation, chest distress and dyspnea may occur in severe patients.

The utility model discloses an intelligent air purification ashtray all-in-one machine which comprises a cigarette ash storage frame body, a first filter box and a second filter box are sequentially arranged on the top of the cigarette ash storage frame body from bottom to top, an air inlet is located in one side of the cigarette ash storage frame body, and a cigarette supporting frame is further arranged on the inner bottom wall of the cigarette ash storage frame body. The first filter box is communicated with the second filter box and the cigarette ash storage frame body in the vertical direction, airflow driving devices are arranged in the first filter box and the second filter box respectively, and the airflow driving devices are used for controlling air in the machine body to vertically flow upwards; the ashtray is located at the bottom of the device, the air inlet direction is from bottom to top, and smoke floats upwards, that is, the natural emission direction of the smoke is consistent with the air inlet direction, so that the smoke can be effectively prevented from diffusing to the outside to pollute the environment; and a place where the cigarette ash falls is not closed, so that the cigarette ash is convenient to clean.

This application relates to the field of silicone rubber, and more specifically, to a high-performance weather-resistant and anti-fouling silicone rubber for encapsulation / bonding of electronic components and its preparation method. It comprises the following raw materials in weight percentages: 50-65% base compound; 20-30% insulating filler; 5-8% A synergist; 2-5% B synergist; the balance being processing aids; A synergist is a hydrogen-containing silicone resin; B synergist is composed of cage-type polysilsesquioxane containing activating groups, tetravinyltetramethylcyclotetrasilazane, and silicone wax in a weight ratio of 1:(0.5-1):(1-3); and the compound system of synergist and B synergist can bond with the silicone rubber obtained from the base compound and insulating filler to form a dense and stable three-dimensional cross-linked network after curing. This not only possesses superior physical properties but also excellent bonding strength, low shrinkage, weather resistance, and anti-fouling properties, improving the structural stability and long-term reliability of electronic components.

A method for preparing a binary formula for Dai pottery clay and its application is disclosed. The method involves taking Dai pottery clay from the Honghe River basin, five-colored clay from Honghe County, and charcoal powder. The Dai pottery clay and five-colored clay are sun-dried and weathered for at least three months. The Dai pottery clay from the Honghe River basin has a SiO2 content of not less than 50%, an Al2O3 content of not less than 15%, an Fe2O3 content of not less than 10%, and a loss on ignition of less than 10%. The five-colored clay from Honghe County has a SiO2 content of 72-82%, an Al2O3 content of 9-12%, and an Fe2O3 content of 3-5%. The method involves soaking the Dai pottery clay and five-colored clay in water until fully saturated, then ball-milling them. The slurry is sieved, and then charcoal powder is added. After stirring evenly, the clay is pressed to drain water and then kneaded to remove air. This invention can improve the throwing and molding performance of Dai pottery clay, increase the sintering temperature and the density and strength of its structure, and reduce the burn-off rate.

The utility model relates to a variable-pressure operation low-temperature corrosion prevention self-deoxidizing device, and belongs to the field of glass kiln waste heat boilers. The deoxygenization device comprises a deoxygenization water tank, a deoxygenization head, a first deoxygenization evaporator, a second deoxygenization evaporator, an inlet header, an outlet header, an ash hopper and an outlet flue, the other end of the deoxygenization head is connected with the deoxygenization water tank, one port of the first deoxygenization evaporator is provided with the inlet header, and the other port of the first deoxygenization evaporator is provided with the outlet header. And an ash hopper is arranged at the bottom of the outlet flue. The waste heat boiler is simple and reasonable in structural design, safe, reliable, environment-friendly and energy-saving, the exhaust gas temperature of the waste heat boiler is reduced, the waste heat utilization rate of the boiler is improved, and use requirements are met.

The invention provides an iron-activated sulfide, a preparation method thereof and a mercury trapping method. The preparation method of the iron-activated sulfide comprises the following steps: carrying out a hydrothermal reaction on a metal source and thiourea to prepare a precursor, and then mixing the precursor with a ferric sulfate solution to obtain the iron-activated sulfide which takes petal-shaped MoS2 as a matrix and is subjected to Fe < 3 + > atomic-scale dispersion and anchored on the basal plane. The iron-activated sulfide provided by the invention is high in Hg0 adsorption capacity in a wide temperature range of 30-200 DEG C, good in thermal stability and suitable for efficient mercury removal of complex smelting flue gas.

The utility model discloses an electrical control box based on electrical automation control, which comprises a control box body and wheels, the two ends of the upper surface of the control box body are in threaded connection with a shell through a plurality of bolts, a filtering mechanism is arranged in the shell, a connecting mechanism is arranged at the lower part in the control box body, and the connecting mechanism is in threaded connection with the control box body. According to the electric control box, the first filtering layer and the second filtering layer can abut against the interior of the shell, then the box plate is installed, in this way, an output shaft of the motor can drive the second bevel gear to rotate through the first bevel gear, the second bevel gear drives the two flow guide fan blades to rotate through the cross rod, and the flow guide fan blades are driven to rotate. According to the utility model, hot air is discharged from the second screen plate, and external air is filtered by the first filter screen, the first filter layer and the second filter layer to cool the internal electrical automation element, so that the electrical automation element can be prevented from being overheated, and dust in the external air is not easily adsorbed to the electrical automation element.

This invention relates to the field of powder material surface modification, and discloses a method and system for detecting the plating failure rate of nickel-coated diamond powder. The method includes the following steps: sample dispersion: placing the nickel-coated diamond powder sample to be tested in a dispersion medium to form a suspension; magnetic separation: placing the dispersed suspension in a magnetic field for magnetic separation, causing magnetic particles to be adsorbed; obtaining the test liquid: extracting the supernatant of the suspension as the test liquid while maintaining the magnetic field; suspended particle analysis: introducing the test liquid into a particle analysis system to count and analyze the characteristics of the non-magnetic particles contained therein; result determination: evaluating the plating failure rate of the original nickel-coated diamond powder sample based on the particle parameters output by the particle analysis system. This invention can complete the detection of a sample in a short time and output the absolute concentration of plating failure particles, achieving quantitative assessment; it can detect trace or localized plating failure particles that are difficult to identify by XRD methods.

The invention belongs to the technical field of mineral processing and beneficiation reagents, and particularly relates to a double-phenyl-bridged dihydroximic acid flotation collecting agent and a preparation method and application of the double-phenyl-bridged dihydroximic acid flotation collecting agent. The general chemical formula of the biphenyl bridged dihydroximic acid flotation collecting agent is HO-NHC (= O)-Ar-O-R-O-Ar-C (= O)-NHOH; wherein Ar is an aromatic ring group of which the ortho-position is provided with carboxyl or carboxylic ester group; and R is alkylene with 1-8 carbon atoms. The collecting agent with the double-benzene-ring double-hydroximic-acid structure is expected to have higher selectivity, more stable chelation capacity and higher hydrophobicity at the same time, so that the collecting agent shows excellent collecting effect and separation efficiency in the flotation process, and the defects that an existing hydroximic acid agent is insufficient in selectivity, poor in hydrophobicity and the like are effectively overcome.

This invention relates to the field of catalyst technology, providing a supported ruthenium-based catalyst, its preparation method, and its application. The supported ruthenium-based catalyst provided by this invention comprises a support and an active metal Ru; the active metal Ru is dispersed on the surface of the support in the form of elemental atom clusters and Ru oxide clusters; the elemental Ru atom clusters are dispersed around the Ru oxide clusters; the support is an oxygen-containing support. The supported ruthenium-based catalyst provided by this invention exhibits high hydrogenation selectivity and activity. When applied to the selective hydrogenation reduction reaction of 2,4-dinitroaniline, it can effectively improve the conversion rate of the reactants and the selectivity of the target product, 4-nitro-o-phenylenediamine. The preparation method provided by this invention is simple, easy to operate, and suitable for large-scale production.

The invention provides a surface modification method of a magnesium-lithium alloy, which can solve the problems that the protection performance of the modified magnesium-lithium alloy is poor, or the thickness of a film layer is not uniform in a micro-arc oxidation process, and the humidity and heat resistance of the modified magnesium-lithium alloy is poor in an existing modification method. The method comprises the following steps: pretreating a magnesium-lithium alloy body; preparing a micro-arc oxidation electrolyte; carrying out micro-arc oxidation treatment to obtain the magnesium-lithium alloy with a micro-arc oxidation layer on the surface; cleaning and drying the magnesium-lithium alloy subjected to micro-arc oxidation treatment, pre-baking, spraying the surface of the magnesium-lithium alloy with a silane confining liquid, baking, turning over, spraying the unsprayed surface of the magnesium-lithium alloy with the silane confining liquid, curing, and cooling to room temperature to obtain the magnesium-lithium alloy with a hole sealing layer on the surface; spraying a special primer for magnesium alloy and baking to obtain the magnesium-lithium alloy with a primer layer on the surface; and spraying acrylic polyurethane finishing paint and baking to obtain the magnesium-lithium alloy with a finishing paint layer on the surface, carrying out a damp-heat test, judging whether the magnesium-lithium alloy is qualified or not, and finishing the surface modification of the magnesium-lithium alloy.

The invention belongs to the technical field of automobile accessories, and discloses an adjustment-free spherical vehicle rearview mirror with a waterproof coating, which comprises a hemispherical mirror, connecting columns are fixedly mounted at the upper end and the lower end of the right side of the hemispherical mirror, a fixing plate is fixedly mounted on the right sides of the connecting columns, and a suction cup is fixedly mounted on the right side of the fixing plate. A suction cup opening is formed in the right side wall of the suction cup; the outer wall of the fixed plate is rotatably provided with a knob, and the upper and lower ends of the left side wall of the knob are provided with rotating grooves for the knob to rotate. When a large vehicle is turned and backed up, due to the fact that the hemispherical mirror of the device is wide in reflection angle and large in look-around area, when the vehicle moves greatly, most blind area positions of the vehicle can be observed without adjusting the reflection angle of the hemispherical mirror, the view field of a driver is optimized, and driving safety is greatly improved; and the traffic accident risk caused by the limited visual field is reduced.

The application belongs to the technical field of color paste, and discloses a kind of inkjet ink color paste and preparation method thereof, and the application uses cashew phenol polyoxyethylene ether and acrylic copolymer dispersant containing pigment affinity group as dispersant with mass ratio 1: (0.5~1), the cashew phenol polyoxyethylene ether molecular structure contains phenolic hydroxyl and long chain alkyl, which forms π-π stacking effect with permanent yellow aromatic ring, can quickly wet, penetrate, spread on the surface of pigment;Acrylic copolymer dispersant containing pigment affinity group can make pigment deflocculate by steric hindrance stabilization, which can form multi-point strong hydrophobic adsorption and electrostatic adsorption with the surface of coated modified permanent yellow particles, adsorption is firm and not easy to desorb, can long-term inhibit particle aggregation, the combination of the two significantly improves room temperature stability, thermal stability, centrifugal stability, effectively reduces color difference.

The utility model discloses a double screw extruding granulator, including the feed hopper of the granulator body top, the top of feed hopper is provided with the support bucket and the filter plate, the outside wall of support bucket is connected with the inside wall of feed hopper and slides, the bottom vertical of support bucket is provided with the support groove, the sidewall of support groove is connected with the sidewall of filter plate, be provided with lifting mechanism on support bucket, the utility model discloses simple structure, reasonable in design, through the support bucket of feed hopper top, filter plate and lifting mechanism, when raw materials are transmitted to feed hopper, filter raw materials, make raw materials hard impurity or not melt granule etc. Dirt transmission to filter plate, reduce the damage that dirt causes to the granulator body, prolong the service life of granulator body.

The utility model discloses a needle detection device for clothing production, which comprises a base, a motor is arranged at the upper part of the base, the output end of the motor is connected with a vertical rod, the side wall of the vertical rod is connected with a fixed arm, the two sides of the output end of the motor are fixedly connected with telescopic sleeves, and the telescopic sleeves are fixedly connected with the fixed arm. A magnetic plate is fixedly connected to the other end of the sleeve, a sliding groove is formed in the side wall of the magnetic plate, a sliding rod is slidably connected to the interior of the sliding groove, a scraping head is fixedly connected to the surface of the sliding rod, and the scraping head is of a hollow design. The needle detection device has the advantage of being capable of automatically removing ironwork.