Preparation Of Conductive Electrospinning Nanofibers And Its Application In The Carding Machine

Carding machine is the key equipment affecting the quality of spinning, there is a electrostatic problems in the process of carding chemical fiber with faster speed of modern carding, such as bell blockage spinning evenness worsen. Not only affect the quality of spinning, but also hindered the further high yield of carding. Currently, there are many ways to solve the problem, so blending into the conductive fiber is the most effective way. In many ways, the electrospinning is currently the only method capable of direct, continuous preparation of polymer nanofiber. In order to make nanofibers uniformly mixed with pure polyester fiber, we transform the carding machine by installed electrospinning device on the carding machine. The purpose is to make the electrospinning jet conductive nanofibers can be mixed directly with the pure polyester fiber network in carding of cotton mesh triangle. The ultimate goal is to solve problems of evenness of deterioration and other issues brought from static in the process of carding chemical fibers.Polyvinylpyrrolidone(PVP) is a green functional polymer materials which widely used in the textile field, Polyaniline(PANI) and multi-walled carbon nanotubes(MWNTs) have good electrical properties. In this article, PVP as a spinning substrate and PANI and MWNTs added as a conductive material to prepared PANI / PVP and MWNTs / PVP conductive nanofibers by electrospinning technique. First, we investigated the effects of four factors that were solution stirring time, spinning voltage, receiving distance and injection rate by single factor test on the preparation of morphology appearance of electrospun nanofibers. On this basis, we carried out orthogonal test and used characterization methods by scanning electron microscopy, conductivity tester and surface resistance tester final derived the time of solution mixing is the most important factor affecting the average diameter of the nanofibers. The results show that the addition of conductive substances PANI and MWNTs better improved the conductivity of the composite fiber mat, and the minimum sheet resistance of the fiber mat is5.2×10^5Ω/?. Finally, we proved conductive material present in the composite nanofibermat by using infrared spectroscopy to analyze the structure of the composite fibers.Using the remodeled carding device to made conductive electrospinning nanofibers blends with the carding machine online production cotton network, the blended fibers and evenness after coiler have been depth analyzed. We further tested the degree of improvement of evenness of blended fibers and volume resistivity by fiber evenness tester and specific electric resistance tester. The results show that the evenness of polyester fiber is very significant increased by PANI / PVP and MWNTs / PVP conductive nanofibers. When the content of PANI was 5% and PVP was 40%, the maximum degree of improvement in evenness was 25%; when the content of MWNTs was 2% and PVP was 42%, the maximum degree of improvement in evenness was 24 %, in addition, compared to the pure polyester fiber, blended fiber volume specific electric resistance has increased by three orders of magnitude.