Screw sliding plunger type step temperature control melting electrostatic spinning device

Abstract

The invention discloses a screw sliding plunger type step temperature control melting electrostatic spinning device. The device comprises a melting heating unit, a screw transmission unit, a step temperature control unit and an electrostatic spinning unit, and is characterized in that the screw transmission unit applies pressure to the melting heating unit to extrude molten materials from a discharge port nozzle, the molten materials form spun fibers under the action of electric field force, the spun fibers are further stretched by the step temperature control unit, and are finally captured bya collecting rotation disc of the electrostatic spinning unit, and electrostatic spinning is completed. The electrostatic spinning device can realize step temperature control to obtain finer electrospun fibers, and has better application prospect in the field of melting electrostatic spinning.

Description

technical field [0001] The invention belongs to the field of melting electrostatic spinning, and in particular relates to a screw rod sliding plunger type stepped temperature-controlled melting electrostatic spinning equipment. Background technique [0002] Melt electrospinning is a special method for preparing nano- and micro-nano fiber materials. The polymer melt overcomes the surface tension and is sprayed from the nozzle hole under the high-voltage electrostatic field. The charged jet flow is cooled and solidified during the injection process, and finally becomes super The fine fibers are collected by the receiving pole to obtain electrospun fibers; melt electrospinning does not require the use of solvents, so there is no need to consider the toxicity and recycling of solvents, which is more environmentally friendly; electrospun fibers have high specific surface area and high porosity And a series of special properties make it have broad application prospects, such as en...

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Problems solved by technology

[0002] Melt electrospinning is a special method for preparing nano- and micro-nano fiber materials. The polymer melt overcomes the surface tension and is sprayed from the nozzle hole under the high-voltage electrostatic field. The charged jet flow is cooled and solidified during the injection process, and finally becomes super The fine fibers are collected by the receiving pole to obtain electrospun fibers; melt electrospinning does not require the use of solvents, so there is no need to consider the toxicity and recycling of solvents, which is more environmentally friendly; electrospun fibers have high specific surface area and high porosity And a series of special properties make it have broad application prospects, such as energy materials, catalytic loading, high-efficiency filtration, biomedicine and clothing accessories; but in the electrospinning process, if the temperature of the polymer melt jet drops too fast, It will lead to premature solidification of the spinning, and then the electrospun fibers cannot be fully stretched, affecting the final shape and size; therefore, whether the temperature can be well controlled has a great impact on the shape and size of the molten electrospun fibers; in addition , the insulation safety of the heating part and the spinning part of the melt electrospinning also needs to be solved urgently

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