The role of Teslaman high voltage power supply TCM6000 in electrospinning

With the development of nanotechnology, electrospinning, as a simple and effective new processing technology that can produce nanofibers, will play a huge role in the fields of biomedical materials, filtration and protection, catalysis, energy, optoelectronics, food engineering, cosmetics, etc. .

   High-voltage electrospinning technology is a method of preparing nano-micron fiber materials by using the breakdown effect of high-voltage electrostatic field on polymer solution. The ends of the cones form jets and are stretched in an electric field, eventually forming nanofibers in a non-woven state on the receiving device.

 

The composition of the electrospinning device

 

   The electrospinning equipment consists of a base, an injection port, a high-voltage power supply and a receiving screen. A high-voltage electric field is applied between the jet head and the receiving screen, and the material to be spun is first dissolved in a suitable solvent and added to a container with jet ports. The electric field force applied between the ejection orifice and the receiving screen is opposite to the action of the liquid surface tension, which produces an outward force on the surface of the hemispherical droplet. When the electric field is gradually increased, the same charge in the solution is forced to gather on the surface of the droplet, and the electric field generated by the surface charge of the droplet makes the droplet at the ejection port gradually change from a hemisphere to a cone (Taylor cone). When the high-voltage electrostatic field is large enough, the jet is ejected from the droplet surface. In general, the more conductive the solution, the easier it is to form a jet. The jet is then accelerated and elongated by the electric field force. At the same time, the volatile solvent begins to volatilize, resulting in a jet beam. The diameter of the jet beam decreases with the volatilization of the solvent; the viscosity of the jet increases. When the jet leaves the base area near the droplet surface and enters the next area, due to the repulsive force of the charges on the surface of the jet, the jet will spread out and form many fine fibers with similar diameters that fall on the receiving screen, resulting in nanofibers with nanofibers. Structure of thin film materials. The resulting fiber diameter depends on the charge per unit length and how much the jet is dispersed to form fibers.

 

   The high-voltage electric field strength formed by the high-voltage power source has a significant effect on the electrospinning process. Under a suitable high-voltage electric field, the nozzles form "Taylor cones", which can spin spun films without beads. With the increase of the high-voltage power supply voltage, the formed "Taylor cone" retreats, the liquid surface ejection point retreats to the inside of the needle tip, and a large number of beads appear in the spinning fiber. When the voltage continues to increase, the spray point rotates around the needle tip, in this case a large number of beads are formed, and the pressure difference is used to spray them uniformly onto the collecting screen.

 

   Teslaman Technology has designed high-voltage power supplies TCM6000 and TE4020 specially used for electrospinning. If there are special parameters or requirements, other types of power supplies can also be customized. All parameters are set for electrospinning experiments. It can meet the requirements of electrospinning experiments, and the effect is ideal. After cooperating with major universities, research institutes and factories, a large number of practical verifications have been obtained in the market. The effect feedback is very good, and the price is very high.

 

TCM6000



TE4020