213results about How to "Reduce dispersion" patented technology

The invention discloses a high-performance ozone-resistant air spring and a preparation method thereof. An inner-layer rubber material and an outer-layer rubber material of the air spring are mainly prepared from the following components: chloroprene rubber, natural rubber, butadiene rubber, an anti-aging agent AW-66, an anti-aging agent 4010NA, an anti-aging agent 4020, microcrystalline wax, N660 carbon black, naphthenic oil, zinc oxide, CZ and insoluble sulfur. The preparation method comprises the steps of first-stage mixing, rubber discharging, standing, second-stage mixing, rubber discharging, standing, rubber sheet calendering, blastocyst forming, wrapping the blastocyst on the surface of a capsule, and performing high-pressure nitrogen vulcanization to form the air spring. The chloroprene rubber, the natural rubber and the butadiene rubber are blended and modified, so that the rubber has the following characteristics that the ozone resistance and the weather aging resistance are remarkably improved; the properties such as tensile strength, stress at definite elongation and tear resistance are improved; the production process properties such as extrusion and calendaring properties are improved, the deflection resistance of the rubber material is improved, and the service life of the product is prolonged.

The invention relates to a composite multi-effect scale and corrosion inhibitor and a preparation method thereof, and belongs to the technical field of water treatment agents.The composite multi-effect scale and corrosion inhibitor is prepared from carboxylic acid monomers, sulfonate monomers, organophosphorus compounds, modified chitosan, modified nanometer titania, oxidation type initiators, reduction type initiators, azole derivatives and the like, the modified chitosan is formed by coating the surface of chitosan with cerium chloride; the modified nano titanium dioxide is formed by coating the surface of nano titanium dioxide with sodium polyaspartate. The composite multi-effect scale and corrosion inhibitor is prepared in a mode of compounding while synthesizing, the scale inhibition effect is excellent, the comprehensive descaling capacity can reach 97% or above, and the composite multi-effect scale and corrosion inhibitor can be used for a high-pH, high-alkalinity, high-temperature and high-hardness circulating cooling water system under the high-concentration-multiple operation condition; the method is suitable for circulating cooling water treatment requirements under harsh conditions in industries such as chemical industry, smelting and light industry.

The invention discloses a three-dimensional back projection imaging method and a three-dimensional back projection imaging device for an array interference SAR (Synthetic Aperture Radar), which belong to the field of SAR three-dimensional imaging, and comprise the following steps: replacing registration by utilizing a three-dimensional grid interpolation method based on a low-altitude scene three-dimensional array SAR imaging model of a polar coordinate system and a Cartesian coordinate system, expanding a sensing matrix, and utilizing compressed sensing to realize the three-dimensional back projection imaging of the array interference SAR. And the three-dimensional information is reconstructed by a CS algorithm, and high-quality three-dimensional reconstruction of an observation scene is accurately realized. According to the method, on the premise of ensuring the calculation efficiency, the resolution and accuracy of the three-dimensional imaging of the array interference SAR under the low-altitude condition are improved, the reconstruction quality of the overlay area is remarkably improved, and the three-dimensional entropy index in the measured data is improved by about 0.1.

The invention provides a manipulator, a mechanical arm and cleaning equipment, and relates to the technical field of cleaning. The manipulator comprises a connecting part, a first flange and a plurality of clamping arms. The connecting part can comprise a shell and a driving device arranged in the shell. The first flange is rotationally connected with the connecting part, and the driving device is in transmission connection with the first flange and used for driving the first flange to rotate. The multiple clamping arms are arranged on the outer side of the first flange at intervals, one end of each clamping arm is rotationally connected with the first flange, an opening is formed in the end, away from the first flange, of each clamping arm, the driving device is in transmission connection with each clamping arm, and the driving device is used for driving the multiple clamping arms to be close to or away from each other so that the opening can be opened or closed. The rotation axis of the first flange is perpendicular to the plane where the opening is located. According to the mechanical arm, clamping and rotating actions can be achieved, the mechanical arm can enter some narrow spaces, the application scene is wide, and the problem that in the related technology, the application scene of a mechanical arm is limited can be solved.

The invention discloses a regeneration method and device for waste activated carbon powder, and relates to the technical field of regeneration of activated carbon powder. A secondary granulation assembly is arranged on the right side of the primary granulation assembly; a drying assembly is arranged on the right side of the secondary granulation assembly; a communicating pipeline is arranged between the top of the drying assembly and the top of the granulation assembly; a screening assembly is arranged on the right side of the drying assembly; a mixing assembly is arranged at the left bottom of the conveying assembly. The bonding effect between the material and the binder is further improved by means of the dredging effect of the material guide rod, and meanwhile, the limiting ring promotes the elastic scraping strip to be always tightly attached to the inner wall of the mixing assembly, so that activated carbon powder is prevented from being attached to the inner wall of the mixing assembly due to high humidity; and resource loss caused by the fact that materials are difficult to adhere to the composite adhesive and remain in the mixing assembly is avoided.

The invention discloses an automatic spray gun, comprising a gun body, wherein a horizontal through pipe is arranged in the center of the gun body, a nozzle assembly is arranged at the front end of the gun body, and a diverter ring cover is arranged between the nozzle assembly and the front end of the gun body; a paint inlet pipe, a main air inlet pipe, a spray width air inlet pipe and an atomizing air inlet pipe are arranged on the outer wall of the gun body. The automatic spray gun divides the air intake of the spray width air inlet pipe and the atomizing air inlet pipe into two paths, one path controls the air volume for the spray width and the atomizing air volume through different control knobs, and the other path is used to control the stroke of the ejector pin, so that the horizontal stroke of the ejector pin can adapt to different spray width air volumes and atomizing air volumes, so that the paint spraying volume reaches the best, the paint is less scattered, the adhesion rate is high, and the advantages of saving paint, saving cost and protecting the environment are achieved.

The invention provides a natural amphiphilic lignin nanoparticle emulsifier for an oil-based drilling fluid as well as a preparation method and application of the natural amphiphilic lignin nanoparticle emulsifier, and belongs to the technical field of oilfield chemical drilling fluids. The preparation method of the emulsifier comprises the following steps: fully dissolving alkali lignin in an organic solvent; filtering, dropwise adding filtrate into deionized water, fully dispersing, and dialyzing; and then carrying out ultrasonic treatment, centrifuging, washing and drying. The emulsifier takes the biomass-based polymer industrial alkali lignin as a raw material, and is green, non-toxic, cheap and easy to obtain; the preparation method is simple, short in period and free of harmful by-products, the organic solvent can be recycled, and the cost is low. The lignin nanoparticles are added into the oil-based drilling fluid as an emulsifier, so that the stability of the oil-based drilling fluid under a high-temperature condition can be remarkably improved; a compact interfacial film can be formed at an oil-water interface, and a three-dimensional network structure with viscoelasticity can be formed in a continuous phase, so that the stability of a water-in-oil emulsion is improved.

The invention provides a material screening device and a screening method thereof, and belongs to the technical field of material screening, the material screening device comprises a rack, a drum screen and a driving assembly, the drum wall of the drum screen is provided with multiple stages of first screening holes with different hole diameters to form a multi-stage screening area, and an auxiliary screening device is fixedly installed in the screening area; the auxiliary screening device comprises an arc-shaped plate, a screening plate and a connecting plate which are connected in sequence; the screening plate is provided with multiple stages of second screening holes, and the first screening holes and the second screening holes in the same stage of screening area are equal in hole diameter. An inner rotary drum is installed in the rotary screen, and a top plate is fixedly installed on the inner rotary drum and can make contact with the connecting plate. According to the screening plate, the screening area of the screening area is increased, if materials in the grade of screening holes cannot pass through the first screening holes, the materials can pass through the second screening holes of the screening plate, the screening accuracy is improved, the screening plate can deform, blocking of the second screening holes by the materials can be reduced, and dispersion of the materials making contact with the screening plate is facilitated.

The invention relates to the field of earmuff products, in particular to a high-flexibility attached earmuff and a preparation method thereof. The high-flexibility attached earmuff structurally comprises an outer protection layer located at the top, a sound absorption layer located in the middle and a flexible layer located at the bottom. The flexible layer is prepared from the following raw materials in parts by mass: 30 to 40 parts of polyether polyol, 20 to 30 parts of polyisocyanate, 5 to 10 parts of a foaming agent, 1 to 2 parts of a catalyst, 1 to 2 parts of a stabilizer, 3 to 5 parts of a flame retardant, 1 to 2 parts of an antioxidant and 5 to 15 parts of a filling agent. The earmuff product prepared by the invention not only has an excellent sound insulation effect, but also can effectively ensure that the earmuff product has good moisture resistance, water resistance, aging resistance, mechanical quality and other properties, and is especially suitable for environments requiring long-time wearing, such as the fields of music production, industrial operation and the like.

The invention discloses solidified soil prepared from solid waste and a preparation method of the solidified soil, and relates to the technical field of constructional engineering materials. According to the solidified soil prepared from the solid waste, the self-made anti-dispersing agent and the composite curing agent are added, the self-made anti-dispersing agent is prepared by introducing graphene oxide to the surface of pretreated aramid fiber and then generating nano silicon dioxide on the surface in situ, the self-made anti-dispersing agent enters solidified soil components, dispersion is reduced, and therefore the strength of the solidified soil is kept; the composite curing agent comprises modified glass fiber reinforced plastic, sulphoaluminate cement, Portland cement and gypsum powder, the modified glass fiber reinforced plastic is prepared by carboxylating glass fiber reinforced plastic and then coating the carboxylated glass fiber reinforced plastic with a sulfydryl cross-linked polymer, and the modified glass fiber reinforced plastic enters the structure of the cured soil, so that shrinkage deformation is prevented, and the curing strength is enhanced.

The invention provides a baking lamp for surgical nursing, and relates to the technical field of nursing instruments. The baking lamp for surgical nursing comprises a base, a connecting column is arranged at the position, close to the rear side edge, of the center of the upper end face of the base, the upper end of the connecting column is movably connected with a first supporting rod through a first connecting piece, and the upper end of the first supporting rod is movably connected with an adjusting structure through a second connecting piece; the other end of the adjusting structure is connected with a lighting structure, the lighting structure comprises a lampshade, a bulb is arranged in the lampshade, a storage groove is formed in the center of the lower end face of the lampshade, a folding sleeve is fixedly connected to the interior of the storage groove, and a protective ring is fixedly connected to the lower end of the folding sleeve. By arranging the lighting structure, when a light source is scattered and the whole support is inconvenient to adjust during use, the folding sleeve connected with the protective ring is pulled out downwards to form a fence, scattering of the light source is reduced, pertinence is higher, and adjuvant therapy is better facilitated.

The invention provides a cationic alkyl glycoside soilless phase drilling fluid. The cationic alkyl glycoside soilless phase drilling fluid is prepared from the following components: 3 to 8 parts of cationic alkyl glycoside, 0.2 to 0.5 part of a coating agent, 0.2 to 0.8 part of a tackifier, 0.5 to 1 part of a filtrate reducer, 0.8 to 1.5 parts of a lubricant, 0.3 to 1.5 parts of a pH regulator, 2 to 3 parts of a reservoir protective agent, 1 to 2 parts of a weighting agent and the balance of water. The cationic alkyl glycoside soilless phase drilling fluid provided by the invention has the advantages of strong anti-sloughing inhibition property, facilitation of mudstone section anti-sloughing and borehole wall stability, excellent rheological property, good rock debris pollution resistance, improvement of the viscosity and shearing force of the drilling fluid, effective improvement of the rock debris carrying capacity of the drilling fluid, and improvement of the drilling efficiency. The lubricating capacity of the drilling fluid is also improved, drill jamming is prevented, the frictional resistance of the drilling fluid is reduced, the plugging capacity of the drilling fluid is enhanced, and the defoaming agent is arranged to reduce bubbles and reduce the influence of the bubbles on the plugging effect of the drilling fluid.

The present application provides a method for producing molded coke by utilizing coke powder as a resource, comprising the following steps: 1) mixing coke powder with water to obtain wet coke powder. 2) mixing wet coke powder with a binder to obtain a mixing and stirring step of a batch material. 3) transferring the batch material to a buffer bin, and outputting the batch material quantitatively to a briquette machine through the buffer bin. 4) pressurizing the batch material through a briquette machine to obtain a cold pressing step of wet molded coke. 5) drying the wet molded coke through a dryer to obtain a drying step of molded coke. The drying step comprises: desulfurizing and denitrifying the flue gas of the coke oven to obtain flue gas to be dried, passing the flue gas to be dried into a dryer, drying the wet molded coke to obtain dried flue gas and molded coke, and removing dust from the dried flue gas and discharging it. The present application realizes the production of molded coke by utilizing coke powder as a resource, and improves the mechanical strength of the molded coke.

The utility model relates to the technical field of hot-blast stoves, in particular to a novel energy-saving hot-blast stove which comprises a high-temperature box used for drying and firing, a preheating box arranged at the left end of the high-temperature box, a cooling box arranged at the right end of the high-temperature box, an air blower arranged at the top of the high-temperature box and close to the right end, an electric kiln body arranged at the left end of the air blower, and an exhaust pipe arranged at the left end of the electric kiln body and communicated with the inside. A heat preservation cover is arranged above the limiting ring, an output shaft of the motor is coaxially connected with a screw rod, and a kiln car is arranged in the preheating box. According to the novel energy-saving hot-blast stove, the preheating box is arranged to preliminarily preheat materials in the kiln car, the high-temperature box is matched with the air blower and the electric kiln body, and heated air in the electric kiln body is continuously guided into the high-temperature box through the air blower and an exhaust pipe; and a heat preservation cover is matched with a limiting ring in an inserted mode, the upper portion of the electric kiln body is intercepted and protected, and the influence of resource waste caused by heat loss around the electric kiln body is reduced.

The invention relates to the technical field of batteries, and discloses a battery cell detection method, a battery cell detection device and a battery cell deviation rectifying method.The battery cell detection method comprises the steps that an end face image of a battery cell is obtained, two feature areas which are in one-to-one correspondence with tabs of two polarities are recognized, a datum point of the center of the end face is determined according to the end face image, and the datum point of the center of the end face is obtained; the two feature regions are respectively arranged on two sides of the reference point; rotating the end face image to enable the arrangement direction of the two characteristic areas and the reference line to form a set included angle, enabling the reference line to pass through the reference point, and initially adjusting the angle of the end face image to enable the two tabs with opposite polarities to be located in the middle position between the two forbidden areas theoretically; the two prohibited areas are not overlapped with the two prohibited areas under the condition that the alignment degree meets the requirement; and judging whether the two characteristic areas are overlapped with the two prohibited areas, if yes, judging that the battery cell is unqualified, preventing the battery cell with poor alignment from flowing out, and the two prohibited areas are located on the reference line and symmetrically distributed on the two sides of the reference point.

The invention relates to the technical field of lighting lamps, in particular to a condensation LED lamp with a built-in reflection cup, which comprises a shell, a lamp holder, a reflection cup body, a swivel, a deflector rod, a driving mechanism, an adjusting mechanism and a reflector, the lamp holder is mounted in the shell, the reflection cup body is mounted at the front end of the lamp holder, the swivel is mounted at the front end of the lamp holder, and the deflector rod is mounted at the front end of the reflector. The driving mechanism is located on the rotating ring, the adjusting mechanism is installed between the reflection cup body and the rotating ring, the reflection plate is installed at the position of the reflection cup body, and the brightness range of light emitted by the condensation LED lamp is adjusted by changing gathering and divergence of LED lamp light at the position of the lamp holder. Meanwhile, the irradiation distance and the irradiation area of emitted light are adjusted by means of the rotating opening and closing principle, and therefore the controllability of a single condensation LED lamp on the light brightness and the irradiation distance during film and television shooting is improved.

The invention relates to the technical field of insulated cables, in particular to a multifunctional overhead insulated cable, which comprises a plurality of groups of wire core conductors, a filling base layer arranged on the surfaces of the plurality of groups of wire core conductors, an insulating assembly, a heat conduction assembly and a protection assembly, through the insulation assembly, accumulation of heat in the cable is reduced, the heat can be rapidly absorbed through the heat absorption layer, meanwhile, the heat absorbed by the heat absorption layer can be further conducted outwards through the heat conduction assembly, the heat dissipation effect on the internal insulation layer and the wire core conductor is improved, and through the arranged protection assembly, when the cable is subjected to external pressure or impact, the protection effect is improved. The heat conduction assembly and the insulation assembly arranged inside are buffered and protected, the risks of aging and cracking of the insulation layer caused by expansion and stress concentration due to high temperature are effectively relieved, heat can be rapidly dispersed, the heat dissipation capability of the cable is improved, the electrical performance and safety are ensured, and the service life of the cable and related accessories is prolonged.

The invention provides a photocatalytic barrier composite film for fresh keeping of fruits and vegetables and a preparation method thereof, and the preparation method comprises the following steps: sequentially adopting 1, 3-propane sultone and octadecyl trimethyl ammonium chloride to carry out modification treatment on nanocellulose to obtain quaternary ammonium sulfonated nanocellulose; the preparation method comprises the following steps: carrying out organic intercalation modification treatment on montmorillonite by adopting hexadecyl trimethyl ammonium bromide and caprolactam, and carrying out hydrophobic modification treatment on intercalated montmorillonite by adopting a silane coupling agent to obtain composite modified montmorillonite; the titanium precursor solution and the zinc precursor solution are sequentially dripped into the montmorillonite dispersion liquid, then aging, centrifuging, washing, drying and calcining are conducted, and load modified montmorillonite is obtained; uniformly mixing polylactic acid, quaternary ammonium sulfonated nano cellulose, the loaded modified montmorillonite, a plasticizer, a lubricant and an antioxidant to obtain a mixed material, and sequentially performing melt extrusion, cooling, pelletizing and film blowing on the mixed material to obtain the photocatalytic barrier composite film.

The invention is applicable to the technical field of water treatment, and provides a nuclear power plant water treatment system which comprises a water taking system, a water making system, a water distribution system and a chemical adding system, a water inlet of an SEI water tank is connected with a water outlet of a reverse osmosis subsystem, and a water outlet of the SEI water tank is connected with a water inlet of an ion exchange treatment subsystem; and a water inlet of the SED water tank and a water inlet of the SER water tank are connected with a water outlet of the ion exchange treatment subsystem. An ultrafiltration subsystem, a reverse osmosis subsystem and an ion exchange treatment subsystem are integrated in the water production system, after one part of industrial fresh water is provided for the SEI water tank, the other part of industrial fresh water enters the ion exchange treatment subsystem again for continuous treatment, and the industrial fresh water, neutral desalted water and alkaline desalted water share a partial treatment process; repeated configuration of equipment in the preparation process of water with different qualities is reduced, decentralized and extra land occupation of system equipment in a plant is reduced, overall planning and utilization of space in the plant are facilitated, and production cost and management cost are reduced.

The invention provides a preparation method of specific molecular weight hyaluronic acid with concentrated molecular weight distribution, and relates to the technical field of polysaccharide preparation. The method comprises the following steps: inoculating a streptococcus zooepidemicus seed solution into a fermentation culture medium, and culturing for 6-8 hours under the conditions that the temperature is 35-39 DEG C and the dissolved oxygen is 15-50%; adding hyaluronidase to enable the enzyme activity concentration to be 1500-4000 U / L, and culturing for 6-10 hours at the temperature of 37-40 DEG C; the fermentation culture medium comprises the following components in parts by mass: 30-50 parts of glucose, 10-15 parts of a yeast extract, 10-15 parts of casein peptone, 5-10 parts of yeast peptone, 1-3 parts of magnesium sulfate and 0.2-0.8 part of sodium glutamate. By regulating and controlling the HAase addition amount, the addition time, the fermentation temperature and the fermentation time, a specific low-molecular-weight hyaluronic acid product can be obtained, and the dispersion degree of the molecular weight of the hyaluronic acid is remarkably reduced.

The multifunctional bellyband with the replaceable lining comprises an elastic band, the lining is arranged on one side of the elastic band, a lining clamp is arranged on the other side of the elastic band, and the edges of the two sides of the lining are turned to the other side of the elastic band and detachably connected with the lining clamp. A first storage bag and a second storage bag are further arranged on the other side of the elastic band, an observation window is arranged on the elastic band corresponding to the first storage bag, and a sandbag is arranged in the first storage bag; and a drainage ball is arranged in the second storage bag. According to the utility model, the lining clamp is connected with the lining, so that the lining is convenient to replace; for a patient needing to observe the wound condition, the state of the lining can be observed through the transparent first storage bag and the observation window; for a patient who needs to use the sandbag for wound compression therapy, the storage bag frame can be used for reducing the dispersion of the compression force of the sandbag; and for a patient using the drainage ball, the storage amount of drainage liquid in the drainage ball can be conveniently observed by using the transparent second storage bag.

The invention relates to the technical field of cement, and discloses a nano-silica-containing cement grinding aid and a preparation method thereof.The nano-silica, sulfur-containing phenolic resin, lignin and water are added into a stirrer and stirred, and the nano-silica-containing cement grinding aid is obtained after stirring is finished. The adsorption of phenolic resin molecules on the surfaces of cement particles can reduce the surface energy of the particles and reduce aggregation and adsorption among the particles, so that the dispersity of materials in the grinding process is improved, the grinding efficiency of a mill can be improved, and meanwhile, the energy consumption is reduced; wherein the quaternary ammonium salt can form a layer of film on the surfaces of cement particles to reduce friction and aggregation among the particles, so that the dispersity and fluidity of the powder are improved, the fineness of the cement is improved, the energy consumption in the grinding process is also reduced, and the sulfur element contained in the cement is also beneficial to improving the grinding efficiency.

The invention discloses an intelligent automobile fault diagnosis and maintenance all-in-one machine and a using method thereof, and belongs to the technical field of automobile maintenance devices.The intelligent automobile fault diagnosis and maintenance all-in-one machine comprises a tire elevator, a workbench, a frame, an air loop and a waste liquid tray. The tire lifter consists of a pair of tire lifter arms and a frame connected with the rear ends of the tire lifter arms and is used for lifting tires; the workbench is provided with a supporting column, a tray and an air conditioner. The frame comprises foot parts, connecting parts and the like, and the foot parts are provided with trundles, stoppers and the like; the air loop supplies compressed air; the waste liquid tray collects waste liquid. According to the trolley, multiple functions are integrated, the tire elevator and the stop dog are driven through an air loop, and an operator can operate the trolley conveniently. The trolley is convenient to move, stable in fixation, capable of effectively improving maintenance efficiency, reducing maintenance difficulty and preventing waste liquid pollution and suitable for the field of automobile maintenance.

This utility model discloses a magnetic drive motor and an air supply device, including a motor body, an inner rotor, an outer rotor, and a magnetic adjustment ring. The motor body includes a housing and a motor shaft, with the motor shaft extending out of the housing. The inner and outer rotors are coaxially arranged. The inner rotor is provided with at least one first magnetic element, and the outer rotor is provided with at least one second magnetic element. One of the inner and outer rotors is fixed relative to the motor shaft. When the motor shaft rotates, the other of the inner and outer rotors can rotate together through the force between the first and second magnetic elements. The magnetic adjustment ring includes a mounting bracket and multiple magnetic plates. The mounting bracket is made of non-magnetic material and includes a fixing part and a mounting part. The fixing part is connected to the housing, and the mounting part is located between the inner and outer rotors and surrounds the inner rotor. The multiple magnetic plates are mounted on the mounting part and arranged at intervals along the circumference of the mounting part. This application can improve the stability of the magnetic drive motor operation.

The invention provides a Halbach permanent magnet array resistant to magnetic field distortion and a photoetching device, belongs to the technical field of photoetching machine technology and ultra-precision measurement, and solves the problems of low precision and poor stability of a photoetching machine motion platform system. The Halbach permanent magnet array comprises a plurality of array units; each array unit comprises two pieces of N-pole magnetic steel, two pieces of S-pole magnetic steel, 16 pieces of flexibly magnetized hexagonal prism magnetic steel, 24 pieces of hexagonal prism magnetic steel and 12 pieces of cuboid magnetic steel. According to the invention, a topological structure is optimally designed, a novel flexible magnetizing method is adopted, harmonic component distortion, periodic distortion and peak fluctuation distortion of an existing magnetic steel array are greatly corrected, so that the three distortion conditions are far better than those of the existing magnetic steel array, and the periodic distortion is almost completely eliminated; the fluctuation distortion dispersion degree in the non-scanning direction is greatly reduced, and the total harmonic distortion rate can be maximally corrected to one fifth before optimization.

The invention relates to the technical field of artificial fibers, and provides a bamboo charcoal surface modification method for spinning, a modification device and a nylon 6 preparation method, and the method comprises the following steps: putting dry bamboo charcoal powder into a closed reaction cavity, and introducing ozone; ozone is decomposed into oxygen and oxygen atoms in the reaction cavity; reacting the oxygen atoms with carbon atoms in the bamboo charcoal to generate an intermediate-COO <->; capturing a hydrogen atom from the surface of the bamboo charcoal by the intermediate to generate carboxyl-COOH, so as to obtain carboxyl modified bamboo charcoal powder. Therefore, the strong oxidizing property of oxygen atoms is utilized, carboxyl is introduced to the surface of the bamboo charcoal, and the modified bamboo charcoal is prepared. Carboxyl of the modified bamboo charcoal powder is grafted to short-chain nylon 6, so that the compatibility of bamboo charcoal particles and a nylon 6 matrix is improved. Meanwhile, agglomeration of the bamboo charcoal particles is reduced, and dispersion of the bamboo charcoal particles in a nylon 6 matrix is facilitated. The notch impact strength of the prepared nylon 6 is remarkably improved, the yarn breaking probability is reduced, and the problems that a spinneret plate is blocked in the spinning process and the like are solved.

The utility model is suitable for the technical field of food transportation, and provides a raspberry transfer box which comprises a box body, placing grooves are evenly distributed on the periphery of the inner wall of the box body, an installation groove is horizontally formed in the position, close to the top, of the box body, and the raspberry transfer box further comprises a cover plate, the bulge assemblies are arranged in the box body at equal intervals and are fixedly connected with the bottom of the box body; the binding assemblies are arranged at the bottom of the box body in a transversely and vertically staggered mode. According to the raspberry transferring box, the protruding assembly can limit raspberries in the transferring process in the mode that the protruding assembly is matched with the containing groove and the cover plate, collision and extrusion of the raspberries in the transferring process are reduced, the integrity of raspberry fruits is ensured, the binding assembly binds ice bags, the raspberries are rapidly pre-cooled, and the raspberry transferring efficiency is improved. Risks of water loss and fungus growth of raspberries are reduced, and the refreshing time and the loading and transporting time of raspberry fruits are prolonged.

The separator for a secondary battery according to the present disclosure includes a porous polymer substrate; and a porous coating layer disposed on at least one surface of the porous polymer substrate wherein the porous coating layer comprises inorganic particles, a binder polymer and a dispersant wherein the binder polymer comprises at least three types of fluorine-based polymers, and wherein the dispersing agent comprises a first dispersing agent and a second dispersing agent having a lower weight average molecular weight than the first dispersing agent.

The utility model discloses a feeding device for continuous feeding, dust prevention and efficiency improvement. The utility model relates to the technical field of mechanical equipment. The feeding device comprises a blending kettle, an air draft system and a feeding bin; a feeding hopper is arranged on the blending kettle, a vibrating device is arranged on the feeding hopper, the feeding bin is arranged on the feeding hopper in a covering manner, an air draft opening of the air draft system is communicated with the feeding bin, and a feeding bin window is arranged on the side surface of the feeding bin. According to the utility model, the feeding bin is covered on the feeding hopper, and the vibration device is arranged at the bottom of the feeding hopper, so that an operator puts weighed materials into the hopper opening through the operation opening, and starts the vibration device to vibrate the materials adhered in the feeding hopper into the blending kettle; in the feeding process, dust in the feeding bin is sucked into the dust recovery system through the air draft system, material dust dispersion in the feeding process is reduced, and the continuous feeding efficiency is improved.

The utility model discloses a vacuum generator with an external silencer structure, which comprises a silencing shell and a mounting seat arranged at the top of the silencing shell, and further comprises an air inlet pipe, an air outlet pipe, an inner noise reduction pipe, an outer noise reduction pipe and a silencing barrel, the mounting seat is arranged at one end of the silencing shell, the air outlet pipe is arranged at the other end of the silencing shell, the inner noise reduction pipe is arranged above the mounting seat in a threaded mode, the outer noise reduction pipe wraps the outer side of the inner noise reduction pipe, the silencing barrel is arranged on the periphery of the outer noise reduction pipe, and a threaded groove is formed in the top of the mounting seat. The double-layer noise reduction structure of the inner noise reduction pipe and the outer noise reduction pipe is adopted, noise generated when the vacuum generator works is effectively reduced, when the vacuum generator works, generated noise sound waves enter the outer noise reduction pipe, then the sound waves interact with the sound guide rod, and the sound waves are effectively dispersed and consumed in the transmission process; and the noise reduction performance of the product is enhanced.