Anti-static polytetrafluoroethylene fiber and preparation method thereof

A polytetrafluoroethylene, antistatic technology, applied in the chemical fiber field, can solve the problems of insignificant antistatic effect, low proportion of graphite, and inability to solve static electricity accumulation, etc., so as to improve appearance and performance, increase web formation, and improve carding Effect

Inactive Publication Date: 2019-07-05
SHANGHAI LINFLON FILM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can improve the charge dissipation performance of the fiber itself, but because the proportion of graphite is too low, its antistatic effect is not significant, and it cannot solve the problem of static electricity accumulation in the production process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] An antistatic polytetrafluoroethylene fiber, including the following parts by weight made of raw materials:

[0029] 100 parts of PTFE dispersion resin;

[0030] 10-30 parts of nano aluminum powder;

[0031] The antistatic polytetrafluoroethylene fiber is surface antistatic finishing.

[0032] A preparation method of antistatic polytetrafluoroethylene fiber includes the following steps:

[0033] Step 1: Put the PTFE dispersion resin into the mixer, add the squeezing aid with a sprayer, and then start the mixer at a speed of 10r / min and a time of 30 minutes to make the squeeze aid and polytetrafluoroethylene The dispersion resin is fully mixed, and the mass fraction of the extrusion aid is 20% of the polytetrafluoroethylene dispersion resin to obtain the polytetrafluoroethylene dispersion resin extruded with the auxiliary agent;

[0034] Step two, add nano aluminum powder to the polytetrafluoroethylene dispersion resin extruded with additives in step one, and then start the mixer ...

Embodiment 2

[0044] The preparation method is the same as in Example 1. The process parameters of this example are as follows:

[0045] In step 1, the speed of the mixer is 10r / min, the time is 40 minutes, and the mass fraction of the extrusion aid is 20% of the polytetrafluoroethylene dispersion resin;

[0046] In step 2, the rotating speed of the mixer is 12r / min and the time is 35 minutes to disperse and mix the nano aluminum powder with the resin. The mass fraction of the nano aluminum powder is 10% of the polytetrafluoroethylene dispersion resin;

[0047] In step three, the plasticizing temperature is 58°C, and the plasticizing time is 50h;

[0048] In step four, the compaction pressure is 3MPa, the compaction speed is 10cm / min, and the compaction temperature is 32°C.

[0049] In step 5, the base band width is 10cm, the base belt thickness is 0.1mm, the pressing pressure is 16MPa, the pressing temperature is 40°C, and the pressing speed is 2m / min; the rolling temperature is 55°C, and the rollin...

Embodiment 3

[0055] The preparation method is the same as in Example 1. The process parameters of this example are as follows:

[0056] In step 1, the speed of the mixer is 10r / min, the time is 40 minutes, and the mass fraction of the extrusion aid is 20% of the polytetrafluoroethylene dispersion resin;

[0057] In the second step, the speed of the mixer is 12r / min and the time is 35 minutes to disperse and mix the nano aluminum powder with the resin. The mass fraction of the nano aluminum powder is 15% of the polytetrafluoroethylene dispersion resin;

[0058] In step three, the plasticizing temperature is 58°C, and the plasticizing time is 50h;

[0059] In step four, the compaction pressure is 3MPa, the compaction speed is 10cm / min, and the compaction temperature is 32°C.

[0060] In step 5, the base band width is 10cm, the base belt thickness is 0.1mm, the pressing pressure is 16MPa, the pressing temperature is 40°C, and the pressing speed is 2m / min; the rolling temperature is 55°C, and the rollin...

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PUM

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Abstract

The invention discloses an anti-static polytetrafluoroethylene fiber. The fiber is prepared from, by weight, 100 parts of polytetrafluoroethylene dispersion resin and 10-30 parts of nano aluminium powder; the anti-static polytetrafluoroethylene fiber is subjected to surface anti-static finishing. According to a preparation method, in the manufacturing process, and metal aluminium powder is mixed,so that the volume specific resistance of the polytetrafluoroethylene fiber is greatly lowered from 1,018 omega*cm to 1,010 omega*cm; meanwhile, a wool top after carding is subjected to dipping finishing through an anti-static solution, the surface resistance of the fiber is further lowered, so that in the carding and net laying process of the fiber, charges generated between the fiber and a carding machine and charges generated through fiber friction can be effectively dissipated in time, the carding difficulties such as static electricity gathering, roller twined by fibers and flyings can beavoided, carding is improved, the net formation performance is improved, and net laying is even; the thickness, uneven gram weight and the like of a needled felt are effectively reduced, and the appearance and application performance of the needled felt are improved.

Description

Technical field [0001] The invention relates to the field of chemical fibers, in particular to an antistatic polytetrafluoroethylene fiber and a preparation method thereof. Background technique [0002] The PTFE molecule has a helical conformation, and the dense fluorine atoms in the molecule have an excellent protective effect on the carbon chain skeleton, making it hardly attacked by any external reagents, and has unparalleled chemical stability, corrosion resistance, Non-stickiness, aging resistance and radiation resistance, lubricity and insulation properties, etc., therefore, it is called "Plastic King". In recent years, PTFE fiber materials have been used more and more widely in dust collection bags, especially high-temperature kiln tails and waste incineration. However, as textile fiber materials, the high electrostatic effect caused by its high insulation performance has seriously increased the difficulty of textile processing. And use requirements limit the use range an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/48D01F1/09C08L27/18C08K3/08B29C43/00B29C43/24B29C43/32
CPCB29C43/003B29C43/006B29C43/24B29C43/32B29K2027/18C08K3/08C08K2003/0812C08K2201/011D01F1/09D01F6/48C08L27/18
Inventor 陈银青陈迎妹薛士临张建军
Owner SHANGHAI LINFLON FILM TECH
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