32results about How to "With piezoelectric effect" patented technology

The invention relates to a piezoelectric element. The piezoelectric element comprises a polymer layer, a first metal layer and a second metal layer, wherein the polymer layer is made of pyrolytic polyacrylonitrile; the first metal layer is arranged on one surface of the polymer layer; the second metal layer are arranged on the other surface of the polymer layer; and the first metal layer and the second metal layer have different work functions. The invention also relates to a preparation method of the piezoelectric element. The piezoelectric element can be applied to the fields of pressure sensors and the like.

The invention relates to an absorbable orthopedic instrument material with a piezoelectric effect and a preparation method thereof. The orthopedic instrument is formed by compounding a medical absorbable high polymer, biological piezoelectric ceramic particles dispersed and distributed in the polymer, and a degradable conductive material which transmits a piezoelectric signal. In the using process, the piezoelectric signal generated by the biological piezoelectric ceramic particles dispersed and distributed in the polymer can be effectively transmitted to the body tissues around the orthopedic instrument by the conductive material, namely a pure magnesium or magnesium alloy wire or plate, near the biological piezoelectric ceramics in the polymer under the action of an external load, the formed electrical stimulation signal can accelerate fracture healing, and the absorbable orthopedic instrument material can be in different structural forms such as bone nails and bone lamellas and is wide in application prospects.

The invention discloses a waste gas exhaust device for a high-rise building water heater, which comprises a water heater body and a smoke exhaust pipe. The water heater body is respectively provided with an air inlet and an air outlet, and the air inlet and the air outlet are respectively sealed and connected with an air inlet pipe. and the outlet pipe, the exhaust pipe is sealed and slidably connected with a push plate, the end of the outlet pipe away from the water heater body is sealed and connected with the push plate, the push plate is rotatably connected with an impeller, and the connection between the smoke exhaust pipe and the push plate A chute is opened at the place, and the chute is connected with an annular piezoelectric ring, and the two sides of the push plate are respectively provided with a fixed plate and a rotating plate. The advantage is that in the state of high external wind pressure, the push plate is pushed by the air pressure to make it contact with the piezoelectric ring and conduct the circuit, so that the piezoelectric ring charges the flat plate capacitor composed of the push plate and the fixed plate under the action of pressure And finally breakdown, under the action of instantaneous breakdown heat, push the push plate back, so as to discharge the waste and avoid causing safety problems.

The invention discloses a device comprising a packing box, electronic equipment and an electronic device. Holes are arranged on the packing box comprising a cavity structure so that sound generated by the electronic equipment can be transmitted to space outside the packing box when the electronic equipment is arranged in the packing box. Therefore, the technical scheme has the effects that the electronic equipment can be protected from being worn or damaged by external force by the packing box of the electronic equipment and also has the technical effects that sound transmission efficiency of the electronic equipment in sound playing can also be enhanced.

The invention discloses a method and device for advanced wastewater treatment with PVDF / ZnO piezoelectric ultrafiltration membrane coupled with advanced oxidation technology. Connect with AC power supply to provide transmembrane pressure in the form of vacuum, and at the same time turn on the ultraviolet lamps set on both sides of PVDF / ZnO piezoelectric ultrafiltration membrane; the wastewater is filtered through PVDF / ZnO piezoelectric ultrafiltration membrane, and ozone Oxidation, ultraviolet radiation, and photocatalytic oxidation are finally purified, and the PVDF / ZnO piezoelectric ultrafiltration membrane realizes self-cleaning effect under the action of AC power; this method overcomes that membrane filtration technology cannot effectively remove small molecule pollutants and advanced oxidation technology For the problem of ineffective oxidation of macromolecular pollutants, the two technologies are organically coupled and complement each other's advantages. At the same time, the piezoelectric effect of PVDF / ZnO piezoelectric ultrafiltration membrane is also used to effectively inhibit membrane fouling.

The invention provides an A60-level lightweight refractory deck composition, comprising at least one component A and component B, wherein the mass ratio of the component A to the component B is (1 to 6) to (1 to 8); the component A is neoprene latex; the component B is prepared from ordinary silicon 42.5 cement, large ceramsite, small ceramsite, large vermiculite and small vermiculite; the grain size of the large ceramsite is 2-5mm; the grain size of the small ceramsite is 0.5-2mm; the grain size of the large vermiculite is 2-4mm; the grain size of the small vermiculite is 0.2-2mm; and the component B contains the ingredients by weight ratio of 50-55% of ordinary silicon 42.5 cement, 20-25% of large ceramsite, 5-10% of small ceramsite, 14-20% of large vermiculite and 5-10% of small vermiculite. The A60-level lightweight refractory deck composition has good lightness, compressive property, fracture resistance and shock resistance, and can effectively prevent sound transmission and heat conduction; and the fire resistance can achieve A-60 level.

The invention discloses a dehumidification waterproof floor tile, which comprises a brick body, a plurality of flexible pedals are embedded on the upper surface of the brick body, the plurality of flexible pedals are arranged in a circular array, and piezoelectric ceramic plates are bonded and connected at the bottom. A liquid storage chamber is opened in the brick body and the bottom of the piezoelectric ceramic plate runs through the liquid storage chamber, and the top of the liquid storage chamber is provided with two liquid inlet holes, and the two liquid inlet holes are located on two symmetrical sides of the brick body. On the side, the bottom of the liquid storage chamber is provided with a liquid outlet and a pressure valve is sealingly connected to the liquid outlet, and the piezoelectric ceramic plate is electrically connected to a plurality of fixing plates, and each of the fixing plates is penetrated with a Each of the torsion shafts is fixedly connected with a blade, and the blades are opposed to a rubber ball, and the rubber ball is rotatably connected to the top of the liquid storage chamber through a connecting rod and a torsion spring. The advantage is that by accelerating the air velocity on the surface of the liquid, the evaporation rate of water is accelerated, and the effect of dehumidification and waterproof is achieved.

The invention provides a composite material suitable for the preparation of a fuel economizer. The composite material is characterized in that the composite material comprises the following components, by weight, 30-60 parts of a polymer material, 40-80 parts of tourmalinite, 10-40 parts of rare earth, 0.01-15 parts of nanometer titanium dioxide and 0.001-10 parts of nanometer platinum, wherein the polymer material is PC, PE, ABS, PS or PMMA. A spherical porous fuel economizer prepared by mixing the components and carrying out slurry injection molding through an injection molding method is also provided. The fuel economizer has the advantages of low cost, good fuel economizing effect, engine power improvement, no generation of secondary pollution, reduction of the engine sound, reduction of carbon deposition in an oil way, stable effect during use, and realization of recycling.