6results about How to "Increase energy dissipation" patented technology

The invention discloses a hydrogen bond enhanced hydrogel fiber, a preparation method and application. The preparation method comprises the following steps: preparing a tamarind polysaccharide solution, adding acrylamide, mixing to obtain a first precursor solution, adding chitosan to obtain a second precursor solution, adding zinc sulfate heptahydrate, an initiator and a cross-linking agent to obtain a hydrogel precursor solution, injecting the hydrogel precursor solution into a capillary tube, and polymerizing and demolding. The tamarind polysaccharide and the chitosan are introduced, and multiple hydrogen-bond interaction and molecular chain entanglement between hydroxyl / amino of the tamarind polysaccharide and the chitosan and a polyacrylamide chain segment are utilized to construct a physical-chemical dual-network enhancement system, so that the structural stability, the deformation resistance and the energy dissipation performance of the fiber are improved; a zinc salt-containing system forms a continuous ion transmission channel, so that the material is endowed with excellent ionic conductivity and stable electrical response. The obtained fiber is simultaneously used as a flexible sensing unit and a zinc ion battery gel electrolyte, sensing-energy storage integration is realized, and miniaturization integration of devices is facilitated.

The application is suitable for the field of drip irrigation equipment, and provides a micro-gravity variable water irrigator and an irrigation method thereof. First, water flows into the flow channel part through the water inlet of the water irrigator, the water flow in the flow channel part is disturbed by the side wall micro-protrusion structure, the water flow energy dissipation is increased, under the condition of ultra-low pressure water head (0.5-1 m), that is, with the help of small position difference of water source, the traditional power energy is not needed, and the water irrigator can be laid for a long distance; the preferential flow channel structure of the micro-gravity water irrigator does not have a low-speed area, the anti-blocking performance is greatly improved, and the dependence of the drip irrigation system on water source filtration is reduced; in addition, different working pressures can be used to realize various scene applications such as irrigation, salt pressing and underground drip irrigation, and the problems that the traditional water irrigator and drip irrigation belt cannot be effectively applied under the condition of limited traditional power energy and complex water quality in the rainwater collection irrigation area in China are solved.

This invention discloses a double-layer clamp for aircraft piping with nonlinear vibration reduction function. The device includes an inner clamp, an outer clamp, clamp gaskets, fastening bolts, and fastening nuts. A certain constraint gap exists between the inner and outer clamps. Both the inner and outer clamps are assembled to the aircraft body using fastening bolts and nuts. The inner clamp consists of an inner clamp metal band and an inner clamp bushing; the outer clamp also consists of an outer clamp metal band and an outer clamp bushing. Both the inner and outer clamp bushings are made of nitrile rubber-organic small molecule hybrid composite material, exhibiting excellent damping performance. This invention utilizes the outer clamp to provide nonlinear constraint stiffness and nonlinear constraint damping to achieve nonlinear vibration reduction, enabling wide-frequency vibration reduction and effectively improving the vibration reduction performance of traditional single-layer clamps. This device is easy to manufacture and install, employs a nonlinear passive vibration control strategy, and achieves high efficiency at low cost.

The application provides a nano-bubble-based capsule vibration isolation system, and belongs to the field of vibration isolation devices.The nano-bubble-based capsule vibration isolation system comprises a vibration isolation capsule, the inside of the vibration isolation capsule is filled with buffer liquid and solid particles, at least part of the surfaces of the solid particles are attached with nano-bubbles, and bubble-attached particles are formed; wherein the bubble-attached particles are configured to collide under the action of elastic waves of a vibration source, so that the nano-bubbles on the surfaces of the bubble-attached particles are broken, the bubble-attached particles generate internal energy based on the friction of the collision and the breaking of the bubbles to increase the energy dissipation of the elastic waves, so as to perform vibration isolation treatment on the elastic waves of the vibration source; and a preparation device is configured to prepare nano-bubbles based on a target generation rate under the control of a far-infrared control signal, and input the nano-bubbles into the inside of the vibration isolation capsule through the lower surface of the vibration isolation capsule, so as to change the concentration of the bubble-attached particles in the inside of the vibration isolation capsule.

The present application relates to the technical field of medical packaging materials, and provides a wet non-woven fabric-based medical sterilization packaging composite material and a preparation method thereof, which comprises a wet non-woven fabric layer subjected to densification and reinforcement treatment, a heat-sealing film layer, and an adhesive layer arranged between the two layers, wherein the adhesive layer is distributed in a non-continuous pattern to locally composite the wet non-woven fabric layer and the heat-sealing film layer. Through the synergistic design of densification reinforcement and local composite in a non-continuous pattern, the present application reduces the shedding rate while retaining the air permeation channels in the un-composite area, solves the contradiction between high density and high air permeability, and effectively disperses stress through discrete adhesive structures, thereby realizing the unity of low shedding, high air permeability and stable peeling strength.

This application discloses a superstretchable ionic gel, its preparation method, and its application, belonging to the field of ionic gel technology. The preparation method of the superstretchable ionic gel includes: dissolving an olefin monomer in water, adding a biopolymer and a metal salt, and stirring until homogeneous to obtain a precursor liquid A; then mixing the ionic liquid with an organic solvent, adding a thermal initiator, and stirring until homogeneous to obtain a precursor liquid B; then mixing the precursor liquid A and the precursor liquid B until homogeneous, pouring the mixture into a reaction mold, and polymerizing at 25-80°C for 3-48 hours to obtain the superstretchable ionic gel. This application solves the technical problem of poor stretching properties in conventional ionic gels.