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92results about How to "Persistent" patented technology

Air film resistance reducing model based on wettability regulation and manufacturing method thereof

The invention provides an air film resistance reducing model based on wettability regulation. An air film resistance reducing layer of the air film resistance reducing model is composed of multiple hydrophilic areas and multiple super-hydrophobic areas. The multiple hydrophilic areas and the multiple super-hydrophobic areas are distributed in an alternating mode. The intrinsic contact angle of each hydrophilic area is smaller than 42 degrees. The intrinsic contact angle of each super-hydrophobic area is larger than 165 degrees. Compared with supercavitation resistance reduction, energy consumption of the model is smaller, and the machining difficulty and cost are lower; compared with ventilating air film resistance reduction, an air film can be maintained by one-time micro-scale ventilation, limitation to the shape of a navigation body is avoided, and the air film is suitable for water surface ships and underwater vehicles. Compared with super-hydrophobic surface resistance reduction, the air film can be maintained stably, and persistence and effectiveness of the resistance reducing effect are achieved; meanwhile, by adjusting distribution shapes and areas of the hydrophilic and hydrophobic areas of the surface of the model and the thickness of the air film, the different resistance reducing effects can be achieved, and practical engineering application can be achieved easily.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Silver ion-containing polyvinyl alcohol-based nano composite antibacterial film material and preparation method thereof

The invention relates to a method for preparing a silver ion-containing polyvinyl alcohol-based nano composite antibacterial film material. The method is characterized by comprising the following steps of: soaking 1 to 10 weight parts of polyvinyl alcohol in water for more than 2-4 hours to make the polyvinyl alcohol fully absorb water and swell, thoroughly dissolving a polyvinyl alcohol solution at the temperature of between 85 and 95DEG C, adding stearic acid dissolved by a solvent, magnetically stirring at constant temperature of between 85 and 95DEG C for 5 minutes, adding a nanomaterial silicon dioxide, magnetically stirring at the constant temperature of between 85 and 95DEG C for 15 minutes, and performing ultrasonic treatment; coating the solution on a smooth glass plate, putting into a fume cupboard, evaporating the solution at room temperature for 48 to 72 hours, allowing a film to be naturally peeled, soaking the film in 1 to 3 weight percent sodium hydroxide for 1 to 2 hours, removing the residual solvent, repeatedly washing with distilled water until neutrality, and naturally drying to obtain a polyvinyl alcohol-based nano composite film material; and immersing the film in 30 to 70ml of 0.1 to 0.7 mol/L silver nitrate solution, stirring for 2 to 6 hours, cleaning with deionized water to remove residual silver ions, and drying at room temperature to obtain the silver ion-containing polyvinyl alcohol-based nano composite antibacterial film material.
Owner:TONGJI UNIV

Locking-unlocking delivery mechanism suitable for rotary wing type unmanned aerial vehicle carrying information collection device

The invention discloses a locking-unlocking mechanism suitable for a rotary wing type unmanned aerial vehicle carrying information collection device. The mechanism comprises a cam disc, a locking assembly, a base and an objective table, the base is sleeved with the objective table, the cam disc is sleeved with the base, and the cam disc and the locking assembly are matched to enable the objectivetable and the base to be locked or unlocked. According to the locking-unlocking mechanism suitable for the rotary wing type unmanned aerial vehicle carrying information collection device, the problemsthat an existing unmanned aerial vehicle delivery technology and the device carry out delivery through a four-rod mechanism or a conveying belt or screw joint of a thread rod, the delivery function is not stable, or completely fails, the environment influence is easily caused, wear is prone to happening, and the information collection device is not prone to being mounted are solved, and the delivery device has the advantages of being stable, durable, not prone to wear, not prone to being affected by the environment, capable of conveniently fixing the information collection device, simple, lowin cost and the like.
Owner:HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY

Outdoor waterproof antibacterial superfine fiber synthetic leather and finishing method thereof

The invention discloses outdoor waterproof antibacterial superfine fiber synthetic leather and a finishing method thereof, wherein a preparation method of the synthetic leather comprises the following steps: (1) immersing superfine fiber synthetic leather in a treatment liquid, and padding, wherein the liquid carrying rate of the superfine fiber synthetic leather is 50%-70%, and the treatment liquid comprises the following components in parts by weight: 7-10 parts of a C6 waterproof finishing agent, 3-7 parts of a water-based antibacterial agent, 1-3 parts of a water-based crosslinking agent, and 100 parts of deionized water, wherein the pH is 4-6; (2) drying the product of the step (1), cooling and coiling; and (3) roll-coating the front face and the reverse face of the superfine fiber synthetic leather of the step (2) with an oily antibacterial agent, drying, cooling and coiling, and thus obtaining the externally-applied waterproof antibacterial superfine fiber synthetic leather. The superfine fiber synthetic leather produced by the method has stable waterproof antibacterial quality, and overcomes the defect that the waterproof property and the antibacterial property cannot reach the standards at the same time; and the product has good breathability and moisture permeability and strong scratch resistance, and is suitable for outdoor protective shoes and protective gloves.
Owner:HUAFON MICROFIBER SHANGHAI

Slicing machine with cleaning mechanism

InactiveCN112372692ARealize sprinkler workAchieve swing flushingCleaning using toolsMetal working apparatusGear wheelElectric machinery
The invention discloses a slicing machine with a cleaning mechanism. The slicing machine comprises a base, a supporting plate, a cleaning structure, an alternating structure, a supporting plate, a pushing air cylinder, a fixing plate, a pushing plate and a limiting structure, wherein the supporting plate is erected on the top side of the base, the fixing plate is welded to the top side of the supporting plate, and the pushing air cylinder is installed on one side of the fixing plate. By the arrangement of the cleaning structure, a rolling motor performs forward and reverse rotation cross operation, an output gear is driven to rotate, under the cooperation of a matching toothed belt, a rolling disc can be rotated, and the rolling disc is driven by the matching toothed belt to turn over in areciprocating manner; when a pump operates, water spraying of spraying heads is achieved, and swing washing can be performed on a knife rest; and during washing, the pushing air cylinder operates, amovable plate is pushed to interact, under the cooperation of brushes which slide in the knife rest, the knife rest can be brushed, a knife can be quickly cleaned, disassembly is not needed, the knifecan be cleaned under better cooperation, and the working efficiency of the slicing machine is improved.
Owner:LIANCHENG KEKESI TECH CO LTD

Antistatic polyurethane protective film and preparation method thereof

The invention relates to an antistatic polyurethane pressure-sensitive adhesive protective film and a preparation method thereof. The antistatic polyurethane pressure-sensitive adhesive protective film is prepared by uniformly coating a polyurethane pressure-sensitive adhesive on a plastic film substrate and baking at high temperature, wherein the polyurethane pressure-sensitive adhesive is prepared from the following components in parts by mass: 100 parts of polyurethane resin slurry, 50-300 parts of a dissolving agent, 3-15 parts of a curing agent, 0.02-1.2 parts of a delay catalyst and 0.1-1.5 parts of an antistatic agent; the delay catalyst is a thermal activation type amine delay catalyst; and the antistatic agent is an ionic liquid antistatic agent. According to the antistatic protective film, the silicon transfer phenomenon of an organic silicon pressure-sensitive adhesive is avoided, the antistatic protective film also has stripping force stability and aging resistance superior to those of an acrylate pressure-sensitive adhesive, meanwhile, the antistatic protective film has a stable and excellent antistatic effect, and the protective film has good self-exhaust performance, good adhesion performance, soft and residue-free torn film, stable stripping force and excellent aging performance. The preparation method disclosed by the invention is simple in process and easy for industrial production and control.
Owner:XIANGYANG SUNVALOR AEROSPACE FILMS CO LTD

Chassis management system and server

The invention discloses a chassis management system which comprises an abnormity monitoring module, a state management module, a rapid node resetting module, an IPC management module and an initialization module, wherein the abnormity monitoring module monitors and controls hardware and a service of a server, acquires state information of the hardware and the service, determines alarm information according to the state information, and sends the alarm information to the state management module; the state management module determines an operation mode of the server according to the alarm information by utilizing the highest error judgment, sends the operation mode to the rapid node resetting module, annunciates other servers a current state of the hardware and the service of the server by the IPC management module, and is linked with an external IO process; the rapid node resetting module resets the hardware and/or the service corresponding to the server according to the operation mode; the IPC management module manages communication between processes and registers a message service; and the initialization module initializes each module. The chassis management system can protect the hardware and data of the server, and enables the service to have stability, persistence and serviceability. The invention further discloses a server which has the effects above.
Owner:SUZHOU LANGCHAO INTELLIGENT TECH CO LTD

Method for treating perchlorate in inorganic water body by using continuous flow anaerobic bioreactor

The invention discloses a method for treating perchlorate in an inorganic water body by using a continuous flow anaerobic bioreactor. The method comprises the steps of filling a sulfur particle and zeolite mixture as a carrier in a reactor; inoculating acclimated activated sludge to form a biological membrane; carrying out continuous anaerobic reduction on perchlorate in the water body. The method is used for treating water bodies containing perchlorate and inorganic salts, the temperature of the reactor system is controlled within 26-36 DEG C, and the removal rate can be up to more than 80% if the system continuously operates for more than one month. The continuous anaerobic reduction method for perchlorate in the water body is capable of successfully realizing the nontoxic transformation of perchlorate under an inorganic water environment and transforming perchlorate ions into chloride ions, free of organism addition and incapable of causing secondary pollution to organisms, and has the advantages of low secondary pollution, low operation cost, high treatment efficiency, capability of buffering the pH value of the water body and softening the water body, simplicity and convenience in preparation and the like so as to be a good method suitable for purifying inorganic water environments.
Owner:SOUTH CHINA UNIV OF TECH

Automobile skylight with anti-pinching function

The invention discloses an automobile skylight with an anti-pinching function. The automobile skylight comprises a U-shaped supporting frame matched with the top part of an automobile, wherein the U-shaped supporting frame is provided with a glass bracket, a driving device for driving the glass bracket to move horizontally and a motor; a motor speed reducer is arranged at the output end of the motor; an anti-pinching mechanical part is arranged between the motor speed reducer and the driving device and comprises a racket wheel shaft and a shell for protecting the racket wheel shaft; free rotation can be realized between the racket wheel shaft and the shell; an upper racket wheel and a lower racket wheel are sheathed in the middle part of the racket wheel shaft and are meshed each other; the lower racket wheel rotates along with the shell, the upper racket wheel rotates along with the racket wheel shaft; and a compression spring for transferring load is arranged between shaft shoulders of the upper racket wheel and the racket wheel shaft. The automobile skylight disclosed by the invention has the advantages that by adoption of the racket wheel structure, the skylight can disengage from teeth and stop transferring power when an obstacle is met in the closing process, so that the anti-pinching function is realized; and the structure is higher in stability in the anti-pinching aspect of the skylight, is long in service life, easy in implementation of structure composition and low in cost.
Owner:HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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