Research On The Process And Application Of Preparing Nanofibers By Solution Jet Spinning Technology

Today,nanotechnology is one of the cutting-edge technologies with high attention,nanotechnology is also developing rapidly,nanomaterials because of their unique properties and properties have become the hot research direction of high-performance materials.Nanofibers are widely used in energy materials,medical dressings,bionic skin and sensors because of their high-ratio surface area,porosity and flexibility.The preparation technology of nanofibers has also been greatly developed,and the preparation of micro-nanofibers is not limited to one method.The micro-nanofiber technology of solution blow spinning is of great concern because of its simple process and tolerance of the precursor solution.In the second chapter,the principle and mechanism of solution blow spinning are introduced,and the solution blow spinning device is assembled,and a variety of polymer polymers are used as objects,and the influence of related factors in the preparation of nanofibers of solution blow spinning on the fibrous appearance is explored.By observing the fibrous appearance,it can be seen that the precursor solution is shunted and refined between the nozzle port and the receiving device under the shearing and traction of high-speed airflow,and the solvent evaporates and cures into fiber.This process is very complex,the various factors affect each other,the concentration of precursor solution,spinning distance,propulsion rate,solvent selection have a certain impact.The third chapter determines the appropriate solvent ratio and concentration of the solution blow spinning PVDF nanofiber film according to the process of exploration of the solution blow spinning process.The core of the nanogenerator was prepared by using the solution blow spinning technology.At the same time,the choice of PVA/PEDOT: PSS conductive composite nanofiber film and aluminum foil as electrodes proved that the electrode selection of nanogenerators has diversity.The piezoelectric output of nanogenerators can be effectively promoted by pressing and bending,and it is proved that the solution injection spinning PVDF nanofiber film has the output of heat release.The combination of nanogenerators and commercial capacitors can power tiny electronic devices,and it can also be fixed to the body's joints,transforming the energy in the body's motion while moving.The results show,that PVDF nanofiber film prepared by solution blow spinning technology has potential application prospect in self-powered textiles.