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A kind of preparation method of polyaniline conductive fiber

A conductive fiber and polyaniline technology, applied in the manufacture of conductive/antistatic filaments, one-component polyamide rayon, one-component polyester rayon, etc., can solve the problem that the electrical conductivity cannot meet the requirements and the end use Unfavorable effects, low polyaniline content and other problems, to achieve the effect of good spinnability, high production speed and excellent electrical conductivity

Active Publication Date: 2018-01-05
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few studies in this area, mainly because the conductive polyaniline powder particles are much larger than the spinning standard, and polyaniline cannot be melted at the spinning temperature, which makes the spinning process difficult. The content in the matrix is ​​low, and its electrical conductivity cannot meet the requirements
A small number of researchers have used plasticizing methods to improve the processability of polyaniline under laboratory conditions. For example, after P. Passiniemi plasticized polyaniline doped with p-alkylbenzenesulfonic acid, it was mixed with polypropylene in a twin-screw screw. Chips are mixed in the extruder and spun into fibers under proper processing conditions, but excessive application of plasticizers can adversely affect the end use of the product

Method used

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  • A kind of preparation method of polyaniline conductive fiber
  • A kind of preparation method of polyaniline conductive fiber
  • A kind of preparation method of polyaniline conductive fiber

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Experimental program
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preparation example Construction

[0028] A kind of preparation method of polyaniline conductive fiber of the present invention mainly comprises the following steps:

[0029] 1. Grinding of polyaniline particles

[0030] Commercially available polyaniline particles are large in size and do not melt at the spinning temperature. The distribution of large-sized polyaniline particles in the fiber will seriously affect the spinnability of the fiber, the uniformity of the linear density of the fiber and the mechanical properties. The reduction of polyaniline particle size helps its uniform distribution in the fiber matrix, which greatly improves the spinnability, and at the same time helps to improve the uniformity of the fiber linear density, thereby improving the mechanical properties of the fiber. In addition, the small-sized polyaniline particles are more conducive to its large-scale distribution in the fiber matrix, thereby forming a more effective conductive network and improving the conductive performance of t...

Embodiment 1

[0040] Grind and pulverize polyaniline particles with a conductivity of 10-5 S / cm for 9 hours with a planetary ball mill, place a certain amount of polyamide 6 slices in the pulverizer, and pulverize the slices at a speed of 5000 rpm for 10 minutes. Use a 60-mesh sieve to remove larger particles. The polyaniline and chip powder were fully mixed evenly, and the mass fraction of polyaniline in the mixed powder was 9%. Set the working temperature of the twin-screw extruder to 230°C, feed the mixed powder into the twin-screw extruder, and wind it on the bobbin at a speed of 200m / min after melt extrusion to form as-spun filaments. The as-spun fibers were drawn with different multiples on the drafting machine, and the indexes of the obtained fibers are shown in Table 1.

[0041] Table 1 Index of polyamide 6 / polyaniline composite conductive fiber

[0042]

example 2

[0044] Grind and pulverize polyaniline particles with a conductivity of 10-5 S / cm for 9 hours with a planetary ball mill, place a certain amount of polyamide 6 slices in the pulverizer, and pulverize the slices at a speed of 5000 rpm for 10 minutes. Use a 60-mesh sieve to remove larger particles. The polyaniline and sliced ​​powder were fully mixed evenly, and the mass fraction of polyaniline in the mixed powder was 12%. Set the working temperature of the twin-screw extruder to 225°C, feed the mixed powder into the twin-screw extruder, and wind it on the bobbin at a speed of 200m / min after melt extrusion to form as-spun filaments. The as-spun fibers were drawn in different multiples on the drafting machine, and the indexes of the obtained fibers are shown in Table 2.

[0045] Table 2 Polyamide 6 / polyaniline composite conductive fiber index

[0046]

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Abstract

The invention relates to a preparation method of polyaniline electroconductive fibers. The preparation method includes following steps: S1, smashing polyaniline particles: grinding the polyaniline particles through a mechanical mode; S2, smashing polymer slices: smashing polymer through a mechanical mode, and using a screen of 60 meshes to screen large-size particles out; preparing as-spun filaments: mixing the polyaniline particles ground in the step S1 with the polymer particles screened in the step S2, feeding a mixture into a double-screw extruder through a hopper, fusing the mixture, extruding the mixture out from filament spraying holes of the double-screw extruder, forming as-spun fibers after passing through a tractive cooling device, and winding the as-spun fibers on a bobbin; S4, stretching and forming the fibers: winding the as-spun fibers on the bobbin in the step S3 in a heating unit for heating, and winding fibers stretched through a translation yarn guide mechanism to a finished product fiber bobbin. The preparation method has the advantages of high production speed, needlessness of solvent and precipitant, simple equipment and short technical process.

Description

technical field [0001] The invention relates to a invention related to the technical field of chemical industry, in particular to a preparation method of polyaniline composite conductive fiber. Background technique [0002] A large number of synthetic fibers represented by polyester, polyamide, polypropylene fibers, etc. occupy a very important position in human production and life. The output of synthetic fibers is increasing year by year, and the application fields are also expanding. They not only play an important role in the field of clothing, but also are excellent supplements and substitutes for natural fibers that humans have been using for thousands of years. At the same time, they are used in national defense, transportation, Industry, agriculture, construction, entertainment and many other fields also play an irreplaceable role. [0003] Synthetic fibers with polymer structure generally have the characteristics of extremely poor electrical conductivity, which mak...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/90D01F6/92D01F6/46D01F1/09
CPCD01F1/09D01F6/46D01F6/90D01F6/92
Inventor 潘志娟洪剑寒
Owner SUZHOU UNIV