Device and process for mass production of nanometer fiber by melt electro-spinning method

Abstract

The invention relates to a device and a process for mass production of nanometer fiber by a melt electro-spinning method, belonging to the field of electro-spinning. The device mainly comprises a base fabric unwinding device, a conveyor belt device, a high-voltage electrode net, a spinning die head assembly, a melt body metering pump, a static removal roller, base fabric, a base fabric winding device, a hot wind return path, an electrode net insulation support, a melt body transmission device, a high-voltage static generator and an air heating system, wherein by the application of a primary division runner in the spinning die head assembly, primary division and accurate partition temperature control of a melt body can be realized; with the creation of a nozzle on an airflow-assisted inner conical face and the assistance of high-speed hot air, secondary division thinning of a melt body layer is realized; by the whole device and the corresponding process, the problems of thick fiber and low yield of the traditional melt body spinning device and process are solved, the device and the process can substitute a melt blowing method to be the main production device and process for production of non-woven materials, and a new path is provided for the production of hundred-nanometer fiber products.

Description

technical field [0001] The invention relates to a device and process for producing nanofibers in batches by melt electrospinning, belonging to the field of electrospinning. Background technique [0002] Under the guidance of the nano-strategy of various countries, scientific research institutions and related enterprises have carried out a large number of experimental research and industrial development of nanofiber preparation technology. At present, the main polymer micro-nanofiber preparation technologies include template polymerization\phase separation\self-assembly\and spinning Silk processing methods (including melt blown method, electrospinning method, stretching method, two-component composite spinning method), etc., different preparation technologies have their own advantages and relative limitations. Among them, the methods widely used in industrialization mainly include drawing method and melt-blown method. The fibers prepared by it are difficult to reach sub-micro...

AI Technical Summary

Problems solved by technology

Among them, the design of the first-level flow channel in the spinning die assembly can achieve the first-level uniform flow of the melt; the air-assisted inner cone nozzle can evenly act on the thin layer of the melt through high-speed hot air to achieve the secondary flow of the inner cone melt layer. Thinning can also accelerate the spinning jet and keep the environment warm, increase the effective distance of electrostatic stretching, and solve the problems of thick fibers and low output in the past melt electrospinning devices and processes

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