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Oiling method for para-aramid fibers

A technology of para-aramid fiber and oiling agent is applied in the field of oiling para-aramid fiber, which can solve the problems of few active groups and weak binding force.

Inactive Publication Date: 2016-09-07
JIANGSU HENGTONG PRINTING & DYEING GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the special molecular structure of para-aramid fiber, there are relatively few active groups on the molecular chain, and the surface of the fiber is basically inert, and the binding force with other materials is relatively weak.

Method used

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  • Oiling method for para-aramid fibers
  • Oiling method for para-aramid fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Please combine figure 1 .

[0026] A) Oiling, heating the oil in the oil tank (not shown in the figure) to 60°C (the oil tank is equipped with heating elements such as electric heating pipes) to improve the fluidity of the oil After spinning, washing, neutralizing, and drying, the para-aramid fiber tow 1 with a denier of 200D and a moisture content of 7% passes through the corresponding oil tank and is equipped with a traveling speed of 400m / min. The oiling device 2 of the nozzles with the same number of para-aramid fiber tows 1, each of the para-aramid fiber tows 1 corresponds to a nozzle, and the nozzle ( That is, the oiling nozzle, the same below) oiling the para-aramid fiber tow 1 to obtain the oiled para-aramid fiber tow;

[0027] B) Infiltration of the oiling agent. After the oiled para-aramid fiber tow in step A) goes out of the oiling device 2, it enters the work roll 31 of the roller extrusion device 3 at a traveling speed of 400m / min Between it and the supportin...

Embodiment 2

[0029] Please combine figure 1 .

[0030] A) Oiling, heating the oil in the oil tank (not shown in the figure) to 80°C (the oil tank is equipped with heating elements such as electric heating tubes) to improve the fluidity of the oil After spinning, washing, neutralizing, and drying, the para-aramid fiber tow 1 with a fineness of 300D and a moisture content of 10% passes through the corresponding oil tank and is equipped with a traveling speed of 600m / min. The oiling device 2 of the nozzles with the same number of para-aramid fiber tows 1, each of the para-aramid fiber tows 1 corresponds to a nozzle, and the nozzle is used to control the flow of the oil in the state of the oil metering pump. The para-aramid fiber tow 1 is oiled to obtain the para-aramid fiber tow after oiling;

[0031] B) Infiltration of the oiling agent. After the oiled para-aramid fiber tow in step A) travels out of the oiling device 2, it enters the work roll 31 of the roll extrusion device 3 at a traveling sp...

Embodiment 3

[0033] Please combine figure 1 .

[0034] A) Oiling, heating the oil in the oil tank (not shown in the figure) to 70℃ (the oil tank is equipped with heating elements such as electric heating pipes) to improve the fluidity of the oil After spinning, washing, neutralizing, and drying, the para-aramid fiber tow 1 with a fineness of 1500D and a moisture content of 10% passes through the corresponding oil tank and is equipped with a traveling speed of 1000m / min. The oiling device 2 of the nozzles with the same number of para-aramid fiber tows 1, each of the para-aramid fiber tows 1 corresponds to a nozzle, and the nozzle is used to control the flow of the oil by the oil metering pump. The para-aramid fiber tow 1 is oiled to obtain the para-aramid fiber tow after oiling;

[0035] B) Infiltration of the oiling agent. After the oiled para-aramid fiber tow in step A) travels out of the oiling device 2, it enters the work roll 31 of the roller extrusion device 3 at a traveling speed of 100...

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Abstract

The invention provides an oiling method for para-aramid fibers and belongs to the technical field of artificial fiber preparation. The oiling method comprises steps as follows: oil in an oil tank is heated, para-aramid fiber bundles subjected to spinning, washing, neutralizing and drying sequentially are enabled to pass through an oiling device corresponding to the oil tank and equipped with a plurality of nozzles, each para-aramid fiber bundle corresponds to one nozzle, and each nozzle applies oil to the corresponding para-aramid fiber bundle; the oiled para-aramid fiber bundles are enabled to enter a roll type extrusion device after leaving the oiling device, oil attached to the surfaces of the para-aramid fiber bundles uniformly permeates into fiber texture of the para-aramid fiber bundles, and the oiled para-aramid fibers are obtained. According to the oiling method for the para-aramid fibers, plentiful oil can be obtained by the para-aramid fiber bundles; the oil can permeate into the fibers, so that the oil is uniformly applied to the outsides and the insides of the para-aramid fiber bundles, and quality guarantee is provided for production of follow-up products.

Description

Technical field [0001] The invention belongs to the technical field of man-made fiber preparation, and specifically relates to a method for oiling para-aramid fiber. Background technique: [0002] The chemical name of para-aramid fiber is polyparaphenylene terephthalamide fiber (PPTA fiber), which is anisotropic by dissolving polyparaphenylene terephthalamide polymer powder in concentrated sulfuric acid And the spinning solution with liquid crystal behavior is sprayed through the spinneret by the spinning method of dry jet and wet spinning, then coagulated into fiber tows in a special coagulation device using dilute sulfuric acid as a coagulation bath, and then sequentially washed, It is neutralized, dried, stretched or shaped, and then oiled and wound to form a finished fiber, which is a high-strength, high-modulus and high-temperature resistant fiber. For example, US patent US 3767756 and world patent WO9634732 both describe the preparation method of this type of fiber. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06B1/02D06B5/06
CPCD06B1/02D06B5/06
Inventor 陈建云
Owner JIANGSU HENGTONG PRINTING & DYEING GRP CO LTD
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