Sheath gas heatable focus electrospinning direct-writing nozzle device

Abstract

The invention discloses a sheath gas heatable focus electrospinning direct-writing nozzle device and relates to an electrospinning direct-writing spray-printing device. The sheath gas heatable focus electrospinning direct-writing nozzle device is provided with a liquid inlet nozzle seat, a gas inlet box body, a binding post, an electric heating element, a relay, a numerical control temperature unit and a temperature measuring element, wherein the liquid inlet nozzle seat is connected with the center of the gas inlet box body and is fixed on the upper end surface of the gas inlet box body, the lower part of the liquid inlet nozzle seat extends into a central through hole of the gas inlet box body, the binding post is arranged on the liquid inlet nozzle seat which is provided with a radial liquid inlet, and an axial nozzle part is arranged at the lower end of the liquid inlet nozzle seat; the gas inlet box body is provided with at least two axial connecting through holes and is provided with a radial gas inlet, an axial gas outlet is formed in the lower end of the gas inlet box body, and the gas inlet box body is provided with a support frame and is provided with two axial hollow connecting wire holes; the electric heating element is arranged in a gas inlet, and the temperature measuring element is arranged on the inner surface of the gas inlet; the temperature measuring element is connected with the numerical control temperature unit which is connected with the relay, and the relay is connected with the electric heating element.

Description

technical field [0001] The invention relates to an electrospinning direct writing spray printing device, in particular to a sheath gas heatable focusing electrospinning direct writing spray head device. Background technique [0002] Electrospinning direct writing based on electro-hydraulic dynamic coupling uses an external electric field to act on the viscoelastic solution, and the viscoelastic solution deforms under the action of the electric field to obtain a Taylor cone; when the electric field force continues to increase beyond the surface tension of the solution, a jet flows from the Taylor cone. Cone-tip injection; using stable linear jet for orderly jet printing preparation of micro-nano structures. Electrospinning direct writing overcomes the spiral and bending instability of the jet in the traditional electro-hydraulic coupling printing process, and uses a stable straight jet for direct writing preparation of ordered micro-nano structures. The direct writing jet ca...

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Problems solved by technology

[0004] In order to carry out experimental research, the design and development of the sheath gas focusing electrospinning direct writing nozzle has become a research hotspot. Chinese patent 201210037687.7 proposes different gas focusing electrospinning nozzle structures, but the various parts of the nozzle described in the patent are still Independently dispersed, the relative position of the gas-liquid outlet surface is fixed, the solution channel is a capillary tube, the inner diameter cannot be adjusted, and the coaxiality between the solution channel and the small hole cannot be adjusted, and it is not easy to simplify and integrate the control of the nozzle

The structure proposed in Chinese patent 201310020810.9 requires frequent disassembly and adjustment of various components during use. Although the coaxiality between the solution channel and the small hole can be adjusted, the neutrality is not good and the adjustment is cumbersome, and the temperature of the sheath gas is not good. control, can not effectively control the solvent volatilization and the diameter and shape of the fiber

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