Design of spherical spinneret based on fractal principle and its electric field simulation
In order to improve the surface field intensity of the spherical spinneret and precisely control the jet emission,a spherical fractal electrostatic spinneret was invented based on the fractal dimension principle,whose structure is obtained by repeatedly arraying a certain number of small balls on the surface of a large ball,and the charge density on the surface of the small balls is greatly increased,and the electric field intensity is increased,which effectively reduces the spinning voltage while controlling the emission of the spinning fluid,saving energy and improving the safety of the spinning process.A numerical simulation of the field intensity of the spherical fractal spinneret was carried out using the finite element software COMSOL to study the effect of the number(arrange-ment),size and structure of spheres on the electric field intensity and distribution,and to determine the num-ber and radius of the spheres.The results show that when the large sphere radius is 60 mm and the small sphere radius is 2.0 mm,the surface of the large sphere can be equally spaced 49 small spheres,the field intensity of this spherical fractal spinneret is 4 times higher than that of the spherical spinneret,and at least 49 jets can be emitted on the surface of the 49 small spheres,with low field interference between the small spheres and fixed jet position,which can increase the uniformity of the electrospun film.
electrospinningspherical fractal structureelectric field distributionfinite element analysis
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维普
