A method for preparing yarn from aramid 1414 waste short fiber

A short fiber and aramid fiber technology, which is applied in the spinning process of aramid fiber waste to prepare aramid yarn. It can solve the problems of high surface friction coefficient, difficulty in normal spinning, and poor fiber cohesion, etc., and improve hardness , reduce mass specific resistance, increase conductivity

Active Publication Date: 2016-12-28
CHANGSHU BAOFENG SPECIAL FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] In view of this, the purpose of the present invention is to provide a method for preparing aramid yarn from aramid 1414 waste short fibers, so as to overcome the large rigidity of aramid 1414 waste in the prior art, the large surface friction coefficient, and the fiber cohesion Poor, the defect that it is difficult to spin normally caused by serious static electricity

Method used

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  • A method for preparing yarn from aramid 1414 waste short fiber

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Embodiment 1

[0037] Using 100% aramid 1414 waste silk to process fibers, it is produced through fiber pretreatment, cotton opening and cleaning, carding, drawing, roving, spun yarn, winding, heat setting twist, yarn joining, two-for-one twisting, heat setting twist and other processes. Aramid 1414 yarn. In this embodiment, the cut length of the aramid 1414 waste processed fiber is 38 mm, and the specifications and uses of the yarn are aramid 1414, 19.7tex three-ply sewing thread.

[0038] The specific content is:

[0039] (1) Control the fiber moisture regain before feeding and the fiber moisture regain after milk balance

[0040] The moisture regain of the fiber before feeding is controlled at about 5%. After the fiber is pretreated and sprayed with an oil agent composed of SN antistatic agent produced by Jiangyin Goldwind Synthetic Resin Co., Ltd., dimethyl hydroxyl emulsified silicone oil and water, and balanced for 24 Hours later, the moisture regain of the fiber will reach between 1...

Embodiment 2

[0049] Using 100% aramid 1414 waste silk to process fibers, it is produced through fiber pretreatment, cotton opening and cleaning, carding, drawing, roving, spun yarn, winding, heat setting twist, yarn joining, two-for-one twisting, heat setting twist and other processes. Aramid 1414 yarn. In this embodiment, the cut length of the aramid 1414 waste processed fiber is 51 mm, and the specifications and uses of the yarn are aramid 1414, 29.5tex two-ply cut-resistant glove yarn.

[0050] The specific content is:

[0051] (1) Control the fiber moisture regain before feeding and the fiber moisture regain after milk balance

[0052] The moisture regain of the fiber before feeding is controlled at about 5%. After the fiber is pretreated and sprayed with an oil agent composed of SN antistatic agent produced by Jiangyin Goldwind Synthetic Resin Co., Ltd., dimethyl hydroxyl emulsified silicone oil and water, and balanced for 24 Hours later, the moisture regain of the fiber will reach ...

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Abstract

The invention relates to the technical field of spinning, dyeing and finishing, and discloses a method for manufacturing aramid fiber yarns with aramid fiber 1414 waste silk short fibers. According to the characteristics of aramid fiber 1414 waste silks, on the basis of the traditional work flow, a set of suitable spinning technologies are provided through control over the fiber moisture regain, control over temperature and humidity of each spinning working procedure, allocation of card clothing of a carding machine, control over the speed of a drawing frame and allocation of the hardness of a rubber covered roller. The method can effectively improve the spinning performance of the aramid fiber 1414 waste silk short fibers, and the spinning quality of the aramid fiber 1414 waste silk short fibers can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of textile dyeing and finishing, and relates to a spinning process of aramid waste silk, in particular to a method for preparing aramid yarn from aramid 1414 waste short fibers. Background technique [0002] Para-aramid fiber is referred to as para-aramid fiber for short. Among them, polyparaphenylene terephthalamide (PPTA) fiber, that is, aramid 1414, is an important main chain due to its lyotropic liquid crystallinity. type polymer liquid crystal. The industrialization of polymer liquid crystal is another differentiated product of para-aramid pulp fiber, which has short length (less than or equal to 4mm), rich hairiness, high aspect ratio, and large specific surface area (up to 7-9m 2 / g) and other advantages, can be better dispersed in the matrix to make an isotropic composite material with excellent performance, its good heat resistance, corrosion resistance and good mechanical properties, in the fricti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D02G3/02
Inventor 钱俊王新华吴敏
Owner CHANGSHU BAOFENG SPECIAL FIBER
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