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Preparation method of conducting fiber

A conductive fiber and nano-conductive technology, which is applied in the manufacture of conductive/antistatic filaments, flash spinning, single-component polyolefin artificial filaments, etc., can solve the problems of unseen functional fiber literature reports, etc. More spinning raw materials, good product quality and easy control

Inactive Publication Date: 2010-09-29
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, within the scope of the applicant's search, flash spinning is only used to make conventional fibers, especially ultrafine conventional fibers, and there is no literature report on using it to make functional fibers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0009] The preparation method (hereinafter referred to as the method) of the conductive fiber (abbreviated as the fiber) of the present invention adopts the flash evaporation process, and the specific process is: first the polymer and the solvent are added into the autoclave at a ratio of 50-200ml per 10g polymer , then add nano-conductive powder in a mass ratio of 5-30g per 100g polymer, stir evenly, and fully stir for 20-30min at a temperature of 150-350°C and a pressure of 5-25MPa until the polymer is dissolved and nano-conductive After the powder is evenly dispersed, open the discharge control valve of the autoclave to let the spinning solution spray out from the spinneret. Stretching, at this time, the nano-conductive powder uniformly dispersed in the solution is sprayed out together with the polymer, and the nano-conductive powder is wrapped in the polymer during the solvent vaporization process, forming a conductive fiber bundle filament, and on the receiving device sol...

Embodiment 1

[0015] Put 10g of polyethylene and 100ml of 1,2-dichloroethane into the autoclave first, then add 2g of carbon black, stir evenly, heat and pressurize the autoclave, and stir for 20min at a temperature of 200°C and a pressure of 15MPa. Fully dissolve the polyethylene to disperse the carbon black evenly; then open the discharge control valve of the autoclave to let the spinning solution spray out quickly, the solvent is instantly vaporized and the polyethylene fiber is stretched at a high rate, and the nano-carbon black is sprayed out and drawn Wrapped in polyethylene fibers, three-dimensional mesh polyethylene conductive fibers are obtained on the receiving device.

[0016] After inspection, the diameter of the polyethylene conductive fiber prepared in this embodiment is between 200nm-5μm, the average value is 1.5μm, and the fiber is in a cluster or three-dimensional network structure; the volume specific resistance of a single filament is 10 4 -10 6 Ω·cm.

Embodiment 2

[0018] First put 8g of polyester and 150ml of chloroform into the autoclave, then add 1g of antimony-doped tin oxide, heat and pressurize the autoclave, and stir for 30min at a temperature of 350°C and a pressure of 20MPa to fully dissolve the polyester and make The antimony-doped tin oxide is uniformly dispersed; then the autoclave discharge valve is opened, the spinning solution is sprayed out quickly, the solvent is vaporized instantly and the polyester fiber is stretched at a high rate, and the antimony-doped tin oxide is sprayed out and wrapped in the polyester fiber. In the polyester fiber, the three-dimensional network polyester conductive fiber plexifilament is obtained on the receiving device.

[0019] After inspection, the diameter of the polyester conductive fiber prepared in this embodiment is between 500 nm and 6 μm, with an average value of 3 μm, and the fiber is in a cluster or three-dimensional network structure. Monofilament volume specific resistance is 10 4...

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Abstract

The invention relates to a preparation method of conducting fiber, which adopts a flash evaporation method. The concrete process comprises the following steps of: firstly, adding a polymer and a solvent into a high-pressure kettle according to the proportion of 10g of the polymer to 50-200ml of the solvent; secondly, adding nanometer conducting powder according to a mass proportion that 5-30g of the nanometer conducting powder is added into every 100g of the polymer, uniformly stirring, and sufficiently stirring for 20-30 min under the condition that the temperature is 150-350 DEG C and the pressure is 5-25MPa; opening an emptying control valve of the high-pressure valve after the polymer is dissolved and the nanometer conducting powder is uniformly dispersed to enable spinning solution to be jetted out from a spinning nozzle and solidified on a receiving device to form three-dimensional network-shaped conducting fiber strips. The polymer is polyolefin, polyester or polyvinylidene fluoride, the solvent is 1,2-dichloroethane, chloroform or cyclohexane, and the nanometer conducting powder is carbon black or antimony doped tin oxide.

Description

technical field [0001] The invention relates to a technology for producing functional fibers, in particular to a method for preparing conductive fibers by using a flash method. Background technique [0002] Although synthetic fibers have excellent performance, they have high resistance and low conductivity, and most of them are insulating fibers. Synthetic fibers tend to accumulate a certain amount of static charge during everyday use. These static electricity will not only cause harm to products and equipment, make the spinning process difficult to proceed smoothly, but also bring a lot of inconvenience to people's production and life, and even endanger safety. Therefore, the antistatic treatment of synthetic fibers is an inevitable demand for applications. [0003] To solve the conductive problem of synthetic fibers, the key is to modify the synthetic fibers to make the original non-conductive synthetic fibers conductive and transfer static charges so that they cannot be...

Claims

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Application Information

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IPC IPC(8): D01F6/46D01F6/92D01F6/48D01F1/09D01D5/11
Inventor 程博闻夏磊西鹏
Owner TIANJIN POLYTECHNIC UNIV
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