Technical fabric

FIELD: textile industry.

SUBSTANCE: invention relates to manufacture of fire-protection fabrics with heat-protection properties destined for militaries, firemen, foundry workers, welders, metallurgists, and so on. Fabric contains, in warp and weft, staple yarn including staple fibers based on triple aromatic copolyamide or mixture of triple aromatic copolyamide based fibers with natural fibers, or mixture of triple aromatic copolyamide based fibers with artificial fibers, or mixture of triple aromatic copolyamide based fibers with synthetic fibers, wherein triple aromatic copolyamide is expressed by following general formula: [-NH-R1-NHCO-R2-CO-]n[-NH-R3-NHCO-R2-CO]m[-NH-R2-NHCO-R2-CO]p, where n=0.05-0.4, m=0.6-0.95, p=0.05-0.4; R1-3 denote bivalent aromatic radicals in p-position, of which R1 is heterocyclic radical of formula , R2 p-phenylene, and R3 radical of formula . More specifically, natural fibers utilized are cotton, flaxen , and wool fibers; synthetic fibers are polyester(ether) and polyacrylonitrile fibers; and artificial fibers are fire-resistant viscose fibers.

EFFECT: increased resource of raw materials and assortment possibilities, and improved working characteristics of fabric.

 

The invention relates to the textile industry and it is proposed to use as a fire-retardant fabrics with heat and thermal properties when sewing a special service for military personnel, firefighters, working hot shops, welders, metallurgists and others

From the patent RU 2129173, IPC D 03 D 15/00, publ. 20.04.1999 known protective fabric having a fire-resistant impregnation, made on the basis of and the duck from the combined two-component yarn consisting of integrated aramid yarn twisted with cotton yarn.

As aramid yarn used filament-based polyparaphenyleneterephtalamide (terlan), polyparaphenyleneterephtalamide and their copolymers.

The disadvantage of this fabric is the absence of a flame-retardant properties without special impregnation (the prototype).

From the patent RU 2211263, D 03 D15/12 well-known technical flame-retardant fabric, containing basis and duck combined thread, the first component which is a complex thread or yarn from fibers based on aromatic copolyamid twisted with the second component of yarn consisting of a fiber-based oxadiazole (axalon).

The disadvantage of this fabric is a multi-stage cooking combined yarns and fabrics, as well as the presence in the combined thread of the second component oxadiazole with significant elongation of up to 60%, that leads to high shrinkage of the tissues, reduces the performance properties of products and hampers their use as protective clothing.

From the patent RU №2216612, IPC 7 D 02 G 3/04, 3/36, D 01 D 15/10, 20.11.2003 known application of fibers based on aromatic polyamides polyparaphenyleneterephtalamide, polymethacrylamide, poliparafenilenvinilena comprising staple fiber yarn as a Supplement to the main component - the fluoropolymer fibers to create fabrics and molded parts (bearings, bushings, seals) with improved frictional properties. Supplements to the main component in the yarn can have a goal to compensate for the inherent fluoropolymer fiber disadvantages - low modulus, high shrinkage to give additional strength or durability. The fabric according to this invention has good sound insulation, low friction properties, improved resistance to plastic deformation, however, does not possess the fire, heat and thermal properties and can not be used for sewing special service fire, hot working shops, welders, metallurgists and others

The challenge which seeks the invention is to remedy these disadvantages by creating a fabric of staple yarn, which has a number of advantages in comparison with the integral thread lets have a wide range of performance properties due to mixing with the main component of various staple synthetic, artificial and natural fibers.

The yarn is increased in comparison with integrated filament elongation, elasticity and coefficient of friction. These properties allow you to produce a fabric with less rigidity, superior tailoring properties and drape.

This object is achieved in that the technical fabric provides the basis and weft yarn comprising staple fiber-based triple scented copolyamid following chemical structure:

[-NH-R1-NHCO-R2-CO-]n [-NH-R3-NHCO-R2-CO-]m [-NH-R2-NH-CO-R2-CO-]p, where n=0.05-0.4 m=0.6-0.95, p=0.05-0.4,

R1, R2, R3- divalent aromatic radicals in the para-position, and

R1- heterocyclic radical of the formula

R2is a radical of the formula

R3is a radical of the formula

Technical fabric provides the basis and weft yarns comprising a mixture of staple fibers triple scented copolyamid and natural fibers, or a mixture of staple fibers triple scented copolyamid and synthetic fibers or a mixture of staple fiber into the he triple scented copolyamid and synthetic fibers, used triple aromatic copolyamide chemical structure

[-NH-R1-NHCO-R2-CO-]n [-NH-R3-NHCO-R2-CO-]m [-NH-R2-NH-CO-R2-CO-]p

where n=0.05-0.4 m=0.6-0.95, p=0.05-0.4,

R1, R2, R3- divalent aromatic radicals in the para-position, and

R1- heterocyclic radical of the formula

R2is a radical of the formula

R3is a radical of the formula

Yarn ring or mechanical methods of spinning in the warp and weft has a linear density of 20-100 Tex.

The surface density of the fabric is not less than 140 g/m2. As the natural fibers can be used cotton, linen, wool fibers, as artificial fibers can be used viscose fibers as synthetic fibers used polyester and polyacrylonitrile fibers.

The fabric can be made plain, satin, twill weave and derivatives based on them.

Staple yarn can be used single or repeated addition. The invention is illustrated by the following examples.

Example 1. Technical fabric plain weave weighing 167 g/m2made from the main autocell yarn-based triple scented copolyamid. The single yarn obtained by a ring spinning method and has a linear density 58.8 Tex. Physico-mechanical properties and the value of oxygen index shown in table 1.

Example 2. Technical fabric satin weave (Atlas 8/3) contains the basis and weft yarn double addition 58.8 Tex ×2 on the basis of triple scented copolyamid.

The surface density fabric - 397 g/m2. The fabric has high strength characteristics, high flame retardant properties (table 1).

Example 3. Technical twill (2/2) weight 172 g/m2made of primary and weft yarns on the basis of triple scented copolyamid. Yarn double addition received the ring spinning method and has a linear density of 20 Tex x2. Physico-mechanical properties and the value of oxygen index shown in table 1.

Example 4. Technical twill weighing 270 g/ m2made from a single primary and weft yarn ring spinning method with a linear density of 100 Tex the following composition, % wt.:

triple scented copolyamide50
coat50

Physico-mechanical properties and flame retardant properties are appropriate to lstout requirements requirements for fire retardant fabrics, and is presented in table 1.

Example 5. Technical fabric made plain weaves (Mat) from single yarn in the warp and weft linear density of 100 Tex the following composition, % wt.:

triple scented copolyamide90
len10

The surface density of the fabric is 212 g/m2. Physico-mechanical properties of the tissue and the value of oxygen index shown in table 1.

Example 6. Technical twill (2/2) contains the basis and weft yarn double addition of 20 Tex ×2 of the following composition, %wt.:

triple scented copolyamide75
cotton25

The surface density fabric - 250 g/ m, the fabric has high strength properties and high flame retardant properties (table 1).

Example 7. Technical fabric satin weave (Atlas 12/7) with surface density of 294 g/ m2has yarn double addition 29.4 Tex ×2 on the basis of the duck and the following composition, % wt.:

triple scented copolyamide70
viscose tsunagaru the I 30

The fabric has high strength characteristics and has fire retardant properties (table 1).

Example 8. Technical flame-retardant fabric weave has a single yarn open-end spinning method on the basis of duck and with a linear density of 58.8 Tex, which contains, wt.%:

triple scented copolyamide85
the polyacrylonitrile-O15

The surface density fabric - 260 g/m2.

The fabric has high strength characteristics and has a high value of oxygen index (table 1).

Example 9. Technical fabric made plain weaves (Mat) of the yarn double exclusion on the basis of and weft linear density TIX ×2 of the following composition, % wt.:

triple scented copolyamide75
polyester fire-resistant25

The surface density of the fabric is 285 g/ m Physico-mechanical properties of the tissue and the value of oxygen index shown in table 1.

Table 1

Physico-mechanical properties of technical fire retardant fabrics.
# exampleSurface density, g/m2The tensile strength of the strips of fabric 50×200 mm, HTearing load, NOxygen index, vol. %
on the basis ofon a duckon the basis ofon a duck
1.167176012221219542
2.397242018701118242
3.1721450133422612142
4.2701020810866232.1
5.212140513021109733
6.165215012221219530.9
7.294130511151059829.5
8.2601005803816343
9. 28511568601007932.9

1. Technical fabric containing basis and weft yarn comprising staple fiber-based triple scented copolyamid following chemical structure:

[-NH-R1-NHCO-R2-CO-]n[-NH-R3-NHCO-R2-CO-]m[-NH-R2-NH-CO-R2-CO-]p,

where n=0.05-0.4 m=0.6-0.95, p=0.05-0.4;

R1, R2, R3- divalent aromatic radicals paraprotein, and

R1- heterocyclic radical of the formula,

R2is a radical of the formula,

R3is a radical of the formula,

when this yarn in the warp and weft has a linear density in the range of 20-100 Tex, and the surface density of the fabric is not less than 140 g/m2.

2. The fabric according to claim 1, which has a plain, satin, twill weave or a derivative weave on the basis of them.

3. The fabric according to claim 1 or 2, in which the used yarn single or repeated addition.

4. Technical fabric containing basis and weft yarns comprising a mixture of staple fibers triple scented copolyamid and natural fibers, or a mixture of staple fibers triple scented copolyamid and the art is different fibers, or a mixture of staple fibers triple scented copolyamid and synthetic fibers, used triple aromatic copolyamide chemical structure

[-NH-R1-NHCO-R2-CO-]n[-NH-R3-NHCO-R2-CO-]m[-NH-R2-NH-CO-R2-CO-]p,

where n=0.05-0.4 m=0.6-0.95, p=0.05-0.4;

R1, R2, R3- divalent aromatic radicals paraprotein, and

R1- heterocyclic radical of the formula,

R2is a radical of the formula,

R3is a radical of the formula,

when this yarn in the warp and weft has a linear density of 20-100 Tex, and the surface density of the fabric is not less than 140 g/m

5. The fabric according to claim 4, in which the natural fibers used cotton, linen, wool fiber.

6. The fabric according to claim 4, in which the synthetic fibers used viscose fibers.

7. The fabric according to claim 4, in which the synthetic fibers used polyester or polyacrylonitrile fibers.

8. The fabric according to claim 4, in which the used yarn single or repeated addition.



 

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