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Super-hydrophobic polytetrafluoroethylene fiber filament and preparation method thereof

A tetrafluoroethylene fiber and polytetrafluoroethylene technology, which is applied in the field of super-hydrophobic polytetrafluoroethylene long fiber and its preparation, can solve the problem of complicated preparation method, complex composition of polytetrafluoroethylene fiber, and improved various components. PTFE fiber production cost and other issues, to improve the stability of use, good application prospects, and reduce the coefficient of expansion.

Pending Publication Date: 2021-05-14
ZHEJIANG KERTICE HI TECH FLUOR MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the components of a polytetrafluoroethylene fiber described in the invention are relatively complex, and the preparation method is relatively cumbersome, and the addition of multiple components significantly increases the production cost of the polytetrafluoroethylene fiber.

Method used

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  • Super-hydrophobic polytetrafluoroethylene fiber filament and preparation method thereof
  • Super-hydrophobic polytetrafluoroethylene fiber filament and preparation method thereof
  • Super-hydrophobic polytetrafluoroethylene fiber filament and preparation method thereof

Examples

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Embodiment 1

[0035] SiO in this embodiment 2 The amount of montmorillonite and montmorillonite is 3% of the mass of PTFE dispersion resin, and the amount of extrusion aid is 26% of that of PTFE dispersion resin. The extrusion aid is preferably aviation kerosene.

[0036] A kind of superhydrophobic polytetrafluoroethylene fiber filament and preparation method thereof, comprises the following steps:

[0037] S1 mixing: add PTFE dispersion resin to double cone mixer, weigh SiO 2 Add montmorillonite to the extrusion aid, start the double-cone mixer, and mix SiO 2 The extrusion aid with montmorillonite was added to the PTFE dispersion resin at a rate of 300 mL / min. The double-cone mixer was turned forward for 25 minutes and reversed for 20 minutes. The speed of the mixer was 30 r / min.

[0038] S2 ripening: put the homogeneously mixed raw materials in S1 in a drying room, and ripen at 50°C for 18 hours.

[0039] S3 Compact: pre-press the matured mixture at a speed of 160mm / min.

[0040] S4 Cal...

Embodiment 2

[0048] SiO in this embodiment 2 The dosage of the PTFE dispersion resin is 3% of the quality of the PTFE dispersion resin, the consumption of the montmorillonite is 2% of the quality of the PTFE dispersion resin, the dosage of the extrusion aid is 24% of the PTFE dispersion resin, and the extrusion aid is preferably aviation kerosene.

[0049] A kind of superhydrophobic polytetrafluoroethylene fiber filament and preparation method thereof, comprises the following steps:

[0050] S1 mixing: add PTFE dispersion resin to double cone mixer, weigh SiO 2 Add montmorillonite to the extrusion aid, start the double-cone mixer, and mix SiO 2 The extrusion aid with montmorillonite was added to the PTFE dispersion resin at a speed of 300mL / min, the double cone mixer was rotated forward for 25min, reversed for 20min, and the speed of the mixer was 30r / min.

[0051] S2 ripening: place the homogeneously mixed raw materials in S1 in a drying room, and ripen at 45°C for 20 hours.

[0052] S...

Embodiment 3

[0059] SiO in this embodiment 2 The amount of the PTFE dispersion resin is 4% of the quality of the PTFE dispersion resin, the amount of montmorillonite is 3% of the quality of the PTFE dispersion resin, the amount of extrusion aid is 26% of the PTFE dispersion resin, and the extrusion aid is preferably aviation kerosene.

[0060] A kind of superhydrophobic polytetrafluoroethylene fiber filament and preparation method thereof, comprises the following steps:

[0061] S1 mixing: add PTFE dispersion resin to double cone mixer, weigh SiO 2 Add montmorillonite to the extrusion aid, start the double-cone mixer, and mix SiO 2 The extrusion aid with montmorillonite was added to the PTFE dispersion resin at a speed of 300mL / min, the double cone mixer was rotated forward for 25min, reversed for 20min, and the speed of the mixer was 30r / min.

[0062] S2 ripening: put the homogeneously mixed raw materials in S1 in a drying room, and ripen for 16 hours at 55°C.

[0063] S3 Compact: pre-...

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Abstract

The invention discloses a super-hydrophobic polytetrafluoroethylene fiber filament and a preparation method thereof. The tetrafluoroethylene fiber filament is prepared from polytetrafluoroethylene dispersion resin, hydrophobic modified nano silicon dioxide and montmorillonite; the use amount of the modified nano silicon dioxide is 3%-6% of the mass of the polytetrafluoroethylene dispersion resin, and the use amount of the montmorillonite is 2%-3% of the mass of the polytetrafluoroethylene dispersion resin; and the dosage of an extrusion aid is 24-30% of the mass of the polytetrafluoroethylene dispersion resin. The contact angle of the super-hydrophobic polytetrafluoroethylene fiber filament is 150-160 degrees, and the super-hydrophobic polytetrafluoroethylene fiber filament has super-hydrophobic performance and is small in expansion coefficient; the wear-resisting performance of the super-hydrophobic polytetrafluoroethylene fiber filament is relatively high, the service life is relatively long, and the use requirements of industrial sewing threads can be met; the super-hydrophobic polytetrafluoroethylene fiber filament is suitable for large-scale industrial production; and the raw materials are low in price and wide in source, so that the production cost is saved, and the super-hydrophobic polytetrafluoroethylene fiber filament has a good application prospect.

Description

technical field [0001] The invention relates to the field of polytetrafluoroethylene long fibers and the preparation thereof, in particular to a superhydrophobic polytetrafluoroethylene long fiber and a preparation method thereof. Background technique [0002] Polytetrafluoroethylene fiber is also called fluorine fiber or Teflon fiber. It is a polyolefin fiber made from polytetrafluoroethylene as raw material, which is cut or fibrillated after being spun or made into a film. It has good elongation, chemical stability and excellent corrosion resistance. The actual temperature range of PTFE fiber is -180~260℃, and it has good weather resistance and flex resistance. However, PTFE fibers have not yet reached superhydrophobicity, poor thermal conductivity, poor wear resistance, large expansion coefficient and easy to generate static electricity. [0003] In order to make the polytetrafluoroethylene fiber have more excellent performance, the invention with application number 20...

Claims

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Application Information

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IPC IPC(8): D01F6/12D01F1/10D01D5/42D02G3/46D02G3/02
CPCD01F6/12D01F1/10D01D5/426D02G3/46D02G3/02D10B2321/042
Inventor 姜学梁王峰张贤章海燕麻福珍陆思君
Owner ZHEJIANG KERTICE HI TECH FLUOR MATERIAL