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欲購買產品

electrostatic accelerator

欲購買產品之描述

The electrostatic accelerator can be used in the field of electrospinning of polymer solutions.

Electrospinning traces its roots to electrostatic spraying, which was first described more than 100 years ago. In electrostatic spraying, charge is injection into a liquid, typically 5-30 kV, from an electrode. The charged liquid is separated some distance from a second electrode (target) of opposite polarity to establish a static electric field. A so-called Taylor Cone forms due to the competing forces of the static electric field and the liquid’s surface tension. For liquids with a finite conductivity, charged droplets are dispersed from the tip of the Taylor Cone and are delivered to the target. If the liquid consists of a polymer melt or a polymer in solution and the concentration of that polymer is sufficiently high to cause molecular chain entanglement, a fiber, rather than a droplet, is drawn from the tip of the Taylor cone.

A basic electrospinning system consists of a charged polymer solution (or melt) that is fed through a small opening or nozzle (usually a needle or pipette tip). Because of its charge, the solution is drawn toward a grounded collecting plate (usually a metal screen, plate, or rotating mandrel), typically 5 – 30 cm away, as a jet. During the jet's travel, the solvent gradually evaporates, and a charged polymer fiber is left to accumulate on the grounded target. The charge on the fibers eventually dissipates into the surrounding environment. The resulting product is a non-woven fiber mat that is composed of tiny fibers with diameters between 50 nanometers and 10 microns. This non-woven mat forms the foundation of the scaffold. If the target is allowed to move with respect to the nozzle position, specific fiber orientations (parallel alignment or a random) can be achieved. Previous work has shown that the mechanical properties of the scaffold can be varied by varying the fiber diameter and orientation.

The highest productivity is 1 kg/day industrially with the accelerator, while it is only 0.08 – 0.4 g/day in lab with fiber diameter of 200 nm without it. We want to enlarge the productivity of the lab to carry out fundamental researches and then transfer to industrial production. And we try to install the electrostatic accelerator onto electrospinning equipment to set up an equipment suitable to labs. If you could have a small size for lab producing 200-500 g /day, we will be very happy.

公司介紹

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公司基本資料

公司名稱:	**********
聯絡人:	Ce Wang
Email:	加入推薦信籃
電話:	**********
傳真:	**********
國家:	China