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Processing method for high-strength polytetrafluoroethylene fiber

A polytetrafluoroethylene, processing method technology, applied in the direction of single-component halogenated hydrocarbon artificial filaments, etc., can solve the problems of flammability, safety hazards, easy cracking, etc., achieve fine cross-section texture, solve environmental problems, and tensile strength high intensity effect

Active Publication Date: 2015-08-12
阜新晟氟利高分子材料有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the thread made of dispersed polytetrafluoroethylene resin, due to the addition of additives, when the additive is removed, the thread contains a large number of micropores, and the thread achieves softness, but no rigidity. Dispersed polytetrafluoroethylene is a fiber The granulated particles are extruded through additives to form longitudinal fibers, which have longitudinal tensile strength, but are easy to crack and fluff in the transverse direction, and lose the characteristics of non-stickiness and low friction coefficient of PTFE materials
Most of the additives added in the process of making silk are flammable solvent oil, paraffin, gasoline, etc., so the manufacturing cost is high and the output is low, and the process of removing additives will also cause environmental pollution, flammability, and safety hazards. Hidden danger
In addition, the produced silk cannot meet the tensile strength requirements of the subsequent processing of the loom

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] The present invention will be described in detail below in conjunction with the examples.

[0013] Embodiment, the high-strength polytetrafluoroethylene fiber processing method is: adopt suspended polytetrafluoroethylene resin, place the selected polytetrafluoroethylene resin at a temperature of 10 ~ 25 ℃ for 24 hours, place the polytetrafluoroethylene resin after 24 hours Vinyl resin is fed into the mold of the press machine after metering, with 200~500kg / cm 2 The pressure per unit is pressed, and the blank is obtained after holding the pressure for 10-30 minutes. The blank is placed at room temperature for 20-30 hours to eliminate internal stress. Then put the blank after eliminating the internal stress into a sintering furnace for sintering. The temperature set during the sintering process is 20~300~327~360~327~20°C to obtain a blank with a crystallinity of 50~80%. The blank with a crystallinity of 50-80% is made into a thick filament with high rigidity at a tempera...

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Abstract

The invention especially relates to a processing method for a high-strength polytetrafluoroethylene fiber, which belongs to the field of processing technology for plastic filaments. A raw material used in the invention is suspension polytetrafluoroethylene resin; and equipment used by the method comprises a pressing machine, a sintering furnace, a filament manufacturing machine, a setting machine and a drawing machine. The processing method for the high-strength polytetrafluoroethylene fiber can produce a filament without any auxiliary agent and with fine and closely-woven cross section texture, high tensile strength and good rigidity; and the produced high-strength polytetrafluoroethylene fiber is applicable to the chemical industry, the oil refinery, the iron and steel industry for recovery and filtering of waste and gas-liquid separation and can perfectly overcome problems in environmental protection.

Description

technical field [0001] The invention belongs to the processing technology of plastic fibers, in particular to a processing method of high-strength polytetrafluoroethylene fibers. Background technique [0002] At present, the thread made of dispersed polytetrafluoroethylene resin, due to the addition of additives, after the additive is removed, the thread contains a large number of micropores, and the thread achieves softness, but has no rigidity. Dispersed polytetrafluoroethylene is a fiber The granulated particles are extruded through additives to form longitudinal fibers, which have longitudinal tensile strength, but are easy to crack and fluff in the transverse direction, and lose the characteristics of non-stickiness and low friction coefficient of PTFE materials. Most of the additives added in the process of making silk are flammable solvent oil, paraffin, gasoline, etc., so the manufacturing cost is high and the output is low, and the process of removing additives will...

Claims

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Application Information

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IPC IPC(8): D01F6/12
Inventor 徐兴国徐曼徐芃
Owner 阜新晟氟利高分子材料有限公司
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