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Carbon-containing arc-resistant aramid fabrics from dissimilar yarns

A kind of aramid, fabric technology, applied in the field of fabrics and products, can solve problems such as unsightly

Active Publication Date: 2019-04-26
EI DU PONT DE NEMOURS & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, clothing with darker shades is harder to see at night and in low-visibility situations

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Carbon-containing arc-resistant aramid fabrics from dissimilar yarns
  • Carbon-containing arc-resistant aramid fabrics from dissimilar yarns
  • Carbon-containing arc-resistant aramid fabrics from dissimilar yarns

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0085] A durable arc resistant and heat protective fabric having an outer surface of a lighter color than the inner surface with different air-jet spun warp and weft yarns was prepared.

[0086] The warp yarns were made from a homogeneous staple fiber blend of 93 weight percent natural meta-aramid fibers, 5 weight percent natural para-aramid fibers, and 2 weight percent antistatic fibers. Cleaner blend slivers of meta-aramid fiber, para-aramid fiber, and antistatic fiber were prepared and spun into spun yarns using cotton-based processing and an air-jet spinning machine. The resulting yarn was a 21 tex (28 cotton count) single yarn. The two single yarns were then plied on a ply machine to make a ply-twist double-ply yarn with a twist of 10 turns / inch. Use this ply as the warp.

[0087] The weft yarns were made from a homogeneous staple fiber blend of 50 weight percent of a first fiber blend combined with 50 weight percent of a second fiber blend consisting of 93 weight perce...

example 2

[0095] An additional sample of the blank twill fabric made in Example 1 was further dyed using a pressure jet dyeing vessel, the fabric was loaded into the dyeing vessel, and then passed through a perforated Venturi in successive loops achieved by sewing the ends of the fabric together The tube circulates. The fabric was washed in an aqueous solution at 60 degrees Celsius for 10 minutes. After washing, the dyeing vessel was drained and filled with dye, dye auxiliaries ((Cindye C-45) and water at an initial temperature of 70 degrees Celsius. The fabric was dyed for 10 minutes while increasing at a rate of 1 degree Celsius per minute Bath temperature. The pH of the solution was then adjusted to a pH between 3 and 4 by adding acetic acid. The container was then charged with additional dye and dye auxiliaries and kept at a constant temperature of 80 degrees Celsius for 10 minutes. The temperature was then increased to Rise at a rate of 1 °C / min until the bath temperature is 130 °...

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Abstract

A woven fabric suitable for use in arc protection and article of thermal protective clothing comprising the fabric, the fabric having a warp yarn dissimilar to a fill yarn, wherein a majority of the aface of the fabric is a first yarn and a majority of the opposing face of the fabric is a second yarn, wherein the second yarn comprises 25 to 100 parts aramid fiber containing 0.5 to 20 weight percent discrete homogeneously dispersed carbon particles and 0 to 75 parts aramid fiber free of discrete carbon particles; and wherein the first yarn comprises aramid fiber being free of discrete carbon particles; the fabric having a total content of 0.5 to 3 weight percent discrete carbon particles.

Description

Background technique [0001] TECHNICAL FIELD. The present invention relates to fabrics and articles that provide worker protection from electrical arcs. [0002] Description of Related Art. Industrial workers and others who may be exposed to electric arcs etc. need protective clothing and articles made of heat resistant fabrics. Any increase in the effectiveness of these protective articles or any increase in the comfort of these articles while maintaining the protective properties is welcome. [0003] Carbon particles have been used as spin-in pigments in fiber coloring, and the black color of carbon is effective in producing deep shades. [0004] It has been found that if the carbon particles are spun into fibers made from fire resistant and thermally stable polymers, the resulting yarns, fabrics and garments provide significantly improved arc protection. However, carbon particles tend to make fibers with darker shades and in many cases require arc resistant fabrics and gar...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D02G3/44D01F1/07D01F6/60
CPCD10B2403/0114D02G3/443D01F1/06D01F1/07D01F6/605A41D31/08D03D1/0035D10B2501/04D10B2331/021D03D15/513
Inventor R.朱
Owner EI DU PONT DE NEMOURS & CO
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