102results about How to "Avoid water resistance" patented technology

A method for manufacturing the following device is provided: an electro-optical device which includes a pair of substrates holding a display material having optical properties varied by electric stimulation and which has a curved shape. The method includes covering the front and rear faces of a display with a pair of protective films and then bonding end portions of the protective films to each other with an adhesive containing a thermoplastic resin, the end portions being located outside the display; heating the bonded end portions to melt the adhesive and then bending the display depending on applications; and solidifying the melted adhesive by cooling to allow the protective films to hold the display bent.

The invention provides a ground-effect vehicle capable of shallowly diving, which can dive shallowly to hide water-jet propulsion and rise over the sea surface to increase jet propulsion, changes hydrofoils into airfoils, generates ground effect, flies over sea or very closely to the ground, and lands in a jet traveling manner. A multistage double circular-arc gear high pressure large capacity pump or multistage internal serial connection dual-charging double circular-arc gear pump is taken as the hydraulic propeller pump during the shallow diving process and the jet propeller pump during the process of flying over the sea. A water pump is used for water inlet submergence and water drainage to a ballast water tank besides water jet; when jet flow is performed at the tail part, and one side is shut off, namely, steering is realized; when flying over the sea, the ground-effect vehicle is still closely stuck to the sea surface for water-jet propulsion. The jet propeller pump can be used for jet propulsion at the tail part and jet hovering at the bottom part through a valve, and the jet at the tail part is turned, so that the purpose of changing the heading can be achieved. The ground-effect vehicle has four navigation conditions: main water-jet shallow diving; main water-jet and jet flying over the sea; minor jet flying near the ground; and minor jet traveling wheel landing, and the ground-effect vehicle is manufactured by manly adopting a novel light material, for example, the fiber reinforced composite material (FRP).

A UV-cured aqueous plastic coating comprises a polyurethane acrylate prepolymer, an active diluent, a light initiator, a levelling agent, a dispersant, an antifoaming agent, and deionized water, wherein the active diluent is hexanediol diacrylate. The active diluent (hexanediol diacrylate) has a very good osmotic swelling effect on polyurethane acrylate prepolymer and increases the adhesion force of the plastic coating on a plastic plate. Without any emulsifier, UV cured aqueous plastic coating having the advantages of small particle size, high stability, good film-forming property and high adhesiveness can be obtained, and thus the shortage that waterproof property and stability of plastic coating are influenced by a conventional emulsifier is overcome. The invention also provides a preparation method of the UV cured aqueous plastic coating.

The invention belongs to the technical field of on-line cleaning for central air-conditioning condensers, and in particular relates to an on-line cleaning system and a cleaning method for the central air-conditioning condenser. The on-line cleaning system for the central air-conditioning condenser comprises the condenser, a ball and water separation device, a high-pressure pump, a base and a ball collection and driving device, wherein the ball collection and driving device and the high-pressure pump are fixed on the base; the high-pressure pump is connected with the ball collection and driving device; and the condenser is connected with the ball collection and driving device through the ball and water separation device. By the on-line cleaning system and the cleaning method for the central air-conditioning condenser, the high-pressure pump is used as motive power for driving rubber balls; the rubber balls are driven by high-pressure jet flow to run, so that damage of a blade wheel and a valve of a water pump to the cleaned balls is avoided; the on-line cleaning system is provided with the ball collection and driving device, so that water resistance caused by a reason that the cleaned balls stay in cooling circulation water and on the inner surface of a filter net of the ball and water separator is avoided; and the consumption of cooling water circulation driving energy is effectively reduced.

The invention relates to a far-infrared functional master batch, a far-infrared polyester fiber as well as a preparation method and application. The far-infrared polyester fiber comprises 100 parts byweight of PET (Polyethylene Terephthalate) and 1-5 parts by weight of the far-infrared functional master batches. The far-infrared polyester fiber is capable of sufficiently taking respective advantageous properties of PET and PETG (Polyethylene Terephthalate Glycol) fibers, has excellent bending elasticity resilience and high volume fluffiness, and meanwhile has excellent anion release properties and far-infrared radiation performance, and excellent bacterium prevention and inhibition properties as well.

The invention discloses a magnetic ferric oxide desulfurizer and a preparation method thereof. The preparation method comprises the following steps that 1, ferric oxyhydroxide, a binder and an auxiliary are mixed to be uniform, and a mixture I is obtained, wherein the auxiliary adopts coal ash and / or volcanic ash; 2, the mixture I, peptizer and water are mixed to be uniform, and a mixture II is obtained; 3, the mixture II is formed and dried; 4, baking is conducted on a dried forming composition, and the magnetic ferric oxide desulfurizer is obtained. The prepared magnetic ferric oxide desulfurizer has a porous structure and is high in mechanical strength and capable of making full contact with sulfur-containing gas, and the desulfurization efficiency is improved. Desulfurization can be conducted under the working conditions of room temperature to medium temperature, normal pressure to high pressure, high hydrogen sulfide content, high moisture content and different feed gases, in the desulfurization process, the strength of a desulfurizing agent is not reduced, argillation and hardening phenomena do not exist, and the high desulfurization activity is kept all the way.

The invention discloses an underwater traction pulley type anthropopathic mechanical hand, which comprises a palm body, a thumb body, an index finger body, a middle finger body, the third finger body, a little finger body and a wrist joint, wherein the palm body comprises a shell in a shape like a Chinese character ''tu'' and same three U-shaped brackets. The long edge side of the shell in the shape like the Chinese character ''tu'' is respectively connected with the three U-shaped brackets. The index finger body, the middle finger body and the third finger body which are same in structure and distributed uniformly at an interval are respectively connected with the U-shaped brackets. The thumb body is connected with an end face of a groove of the shell in the shape like the Chinese character ''tu'' close to one side of the index finger body. The little finger body is connected with a side face of the groove of the shell in the shape like the Chinese character ''tu'' close to one side of the third finger body. The wrist joint is connected with a short edge side face of the shell in the shape like the Chinese character ''tu''. According to the invention, the weight of the fingers is lightened, the size of the fingers is reduced, and the accumulated error of transmission is reduced through transmission of the traction pulley. Mechanical parts are simpler in design so that the manufacturing cost of the parts is lowered. The misgiving about waterproof and anti-creep performances of the mechanical hand is avoided, and the reliability of the mechanical hand is improved, so that the underwater traction pulley type anthropopathic mechanical hand is suitable for underwater operation.

The invention provides a liquid band-aid and a preparation method thereof. The liquid band-aid consists of a film-forming agent, a solvent and bio-active glass. According to an embodiment, the liquidband-aid provided by the invention has functions of preventing wound infection, protecting wounds and water-proofing; and the liquid band-aid is applicable to protection of scratched and surgically sutured sites, skin allergy, scratched hangnails, cracks, chapped skin, small tool marks, scratched parts due to mosquito bites, rapid removal of blood crusts, scars and the like.

The invention provides a waterproof USB socket, which comprises a plug member, a metal housing sleeving the plug member, waterproof glue filling in the tail portion of the plug member, and a waterproof ring sleeving the metal housing. The plug member comprises a metal middle plate, first and second terminal groups arranged at the upper and lower sides of the metal middle plate respectively, and aninsulation body for enabling the metal middle plate and the first and second terminal groups to be fixedly integrated. The insulation body comprises a base portion, a step portion extending forward from the base portion, and a butting portion formed by extending forward from the step portion. The metal housing comprises a metal inner shell with a seamless peripheral wall. A stop member is inserted on the base portion of the insulation body. The stop member comprises a spot welding platform and an abutting-against portion formed on the front end surface of the base portion by bending forward from the spot welding platform and extending downward. The spot welding platform of the stop member is contacted with the metal inner shell and the two are integrated through spot welding. The invention also provides a manufacturing method of the waterproof USB socket.

The invention provides a method for measuring thickness of foam plastic. The method comprises steps as follows: (1), a probe of an eddy current thickness measurement instrument is put on a surface of the foam plastic; (2), pressure is exerted according to a use requirement of the probe; (3), the thickness of the measured foam plastic is obtained according to a number displayed on a reading dial of a host of the eddy current thickness measurement instrument. The method solves the problem that the foam plastic is damaged during thickness measurement with a conventional foam plastic thickness measurement method.

The invention provides a device for polishing the back face of a semiconductor wafer, and belongs to the field of wafer manufacturing. The device comprises an operating mechanism, wherein the operating mechanism comprises a rotatable mounting disc, and the mounting disc is provided with a plurality of mounting holes. The number of bearing discs is the same as that of the mounting holes, the bearing discs are rotationally arranged in the mounting holes, a plurality of counter bores are formed in the bearing discs circumferentially, and connecting parts are arranged at the bottoms of the bearing discs. A first driving part is located below the mounting disc and comprises a driving pump, a driving shaft is movably arranged in the axis direction of a rotating shaft of the driving pump, and when the wafer is polished, the driving shaft is connected with the connecting parts of the bearing discs. A feeding mechanism comprises an alignment table and a suction cup. A grinding mechanism is arranged above the mounting disc corresponding to the first driving component, the grinding mechanism is provided with a grinding disc, and sealing covers are arranged at the positions, corresponding to the grinding mechanism, above and below the mounting disc. The device is high in use safety, convenient to maintain and check and high in machining efficiency.