Double-sprayer bipolar electrostatic spinning method
An oxide, dual-nozzle technology, used in fiber processing, spinneret assemblies, textiles and papermaking, etc., can solve problems such as spinneret repulsion, and achieve the effect of convenient operation and simple process
Inactive Publication Date: 2013-06-19
DALIAN UNIV OF TECH
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Problems solved by technology
[0003] The invention provides an electrospinning method for preparing two kinds of oxide fibers with different components interweaving a new type of network material, which solves the problem of repulsion between jets existing in multi-nozzle spinning
Method used
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Embodiment
[0011] Example: Preparation of zirconia / titania heterogeneous fiber interwoven network material
[0012] In the dual-nozzle bipolar electrospinning system, two vessels were filled with a mixture of zirconia and titania with the organic solvent polyvinylpyrrolidone (PVP), respectively. Set the distance between the two nozzles to be 4 cm, and the distance between the nozzle and the collecting plate to be 5 cm. Ground the collector plate. A +5 kV DC voltage was applied to the nozzle containing the zirconia liquid, and a -6 kV DC voltage was applied to the nozzle containing the titanium oxide liquid, and the double nozzle electrospinning started. The schematic diagram of the circuit connection of the heterogeneous spinning equipment is shown in figure 1 shown. The spinning time is controlled according to the required amount of interwoven network material to obtain a heterogeneous interwoven network material mixed with two kinds of fibers. The scanning electron micrographs of t...
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The invention relates to a spinning method for bipolarly preparing an oxide fiber by a double-sprayer, belonging to the technical field of preparation of nano fiber materials. The invention is characterized in that an instrument comprises a high-voltage direct current power supply, two containers provided with sprayers and a collecting board. The circuit connection method comprises the following steps: applying a forward direct current voltage to one sprayer, applying a reverse direct current voltage to the other sprayer, and connecting the collecting plate connected with an earth terminal of the circuit between the two sprayers. When the circuit is switched on, the oxide fiber precursor materials sprayed by the two sprayers are interweaved together owning to the attraction of charges of different polarities, thus forming a two-oxide nano fiber interweaved network-shaped material after firing. The invention has the following effects and benefits: the material can be widely applied, such as manufacturing sensitive elements and other electronic devices and improving the sensitivity and response time of a sensor. The new spinning material is use for preparing multiple novel composite oxide nano fiber network-shaped nonwoven materials, thus providing a new method for the development of new structural materials.
Description
technical field [0001] The invention belongs to the technical field of nanofiber material preparation. The invention relates to an electrospinning method for preparing oxide fibers with dual nozzles and bipolarity, and is especially suitable for preparing new interwoven network materials composed of two different oxide fibers, so as to manufacture new electronic devices. Background technique [0002] The research work of preparing oxide nanofiber materials for sensitive functional sensors by electrospinning method has been extensively carried out in recent years. However, most studies use a single nozzle to prepare single-material nano-oxide fiber materials. There are also studies using a multi-nozzle spinning method, the purpose of which is to increase the spinning area, and only nanofibers of a single material can be prepared at the same time. The existing single-nozzle or multi-nozzle spinning is unipolar electrospinning. The high-voltage direct current is applied to f...
Claims
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IPC IPC(8): D01D5/00D01D4/00
Inventor 王兢苏梅英杜海英郑雁公
Owner DALIAN UNIV OF TECH