RU2408748C1 - Fire resistant fabric - Google Patents

Abstract

FIELD: textile, paper.

SUBSTANCE: fire-resistant fabric contains combined thread of warp and weft, which represents a two-component reinforced thread, where rod is represented by aramid complex thread of linear density 6.3-200 tex, and the second component in the form of braiding from yarn on the basis of oxydiazole with a ratio of turns 400-1000 twists per m and linear density of 10-200 at the following ratio of components (wt %): thread on the basis of aromatic copolyamide 10-50; yarn of fibre on the basis of oxydiazole 90-50. Fabric is made with warp fill ratio equal to weft fill ratio and making 1.1-1.3, aramid thread is thread on the basis of polyparaphenyleneterephthalamide, copolyparaphenyleneterephlal amide, polyparaphenylenebenzimidazoleterephlal amide, copolyparaphenylenebenzimidazoleterephthalamide, triple aromatic copolyamide.

EFFECT: possibility to develop fabric with high resistance to wear loads, resistance of dye relative to light effect, high fire and heat resistance properties.

2 cl, 1 tbl

Description

The invention relates to the textile industry and can be used to produce fabrics intended for the manufacture of clothing for military personnel and workers in fire and fire hazardous professions.

Known technical fabric, consisting of heat-resistant polyparaphenylene terephthalamide warp threads, made in the form of a yarn of linear density 32 tex × 2 in combination with a complex thread in increments of 8: 1-2 or with a combination thread in increments of 30: 2. Weft threads are made either in the form of yarn from polyparaphenylene terephthalamide fibers or complex threads 29.4 or 58.8 tex, or a combined thread, which is two-component, the components of which are single yarn and complex thread (RU 2103427 C1, 01.27.98).

The specified fabric does not have the ability to make up, as well as the necessary strength of fixing the printed pattern.

Known protective fabric containing a warp and a weft combined two-component thread, consisting of a complex aramid thread twisted with the second component, cotton yarn. As an aramid yarn, yarns based on polyparaphenylene terephthalamide and their copolymers were used (RU 2129173, IPC D150 / 00, published on 04/20/1999).

The disadvantage of this fabric is the lack of fire-resistant and light-stable properties without special impregnation.

Closest to the claimed fabric is a fire-resistant fabric containing a warp and weft of a combined thread, the first component of which is a complex thread or yarn of fiber based on aromatic copolyamide, twisted with a second component of yarn, consisting of fiber based on oxadiazole, single, double or triple addition, and the thread or yarn of the first component has a linear density in the range from 10 to 200 tex, and the yarn of the second component is from 13 to 200 tex in the following ratio of components n it wt.%: thread or yarn from fiber based on aromatic copolyamide 80-45, yarn from fiber based on oxadiazole 20-55, while the fabric has a surface density of at least 80 g / m ² (RU 2211263 C1, 08.27.2003) .

The disadvantages of this fabric are low resistance to abrasion, low color fastness to light weather, limited color gamut, the inability to obtain camouflage camouflage patterns due to the fact that threads or yarns based on aromatic copolyamide, twisted with yarn from oxadiazole fiber, having their own natural color, form the surface of the fabric, alternating among themselves, giving the fabric a yellow-orange tint.

The problem to which the invention is directed, is to eliminate these disadvantages.

The technical result achieved in this invention is the ability to create fabrics with a wide color gamut, including camouflage camouflage with improved performance properties: high resistance to abrasion, color fastness in relation to light weather, high fire-resistant properties.

The technical result mentioned above is achieved in that the fire-resistant fabric contains a combined thread along the warp and the weft, the first component of which is an aramid thread or yarn twisted with a second component of yarn consisting of light-stabilized oxadiazole-based fiber. In this case, the composite thread is a bicomponent reinforced thread, in which aramid multifilament yarn or yarn with a linear density of 6.3-200 tex is used in the form of a core, and the second component is in the form of a braid made of oxadiazole fiber yarn with a number of turns of 400 1000 cr / m and a linear density of 10-200 tex. The ratio of components in the yarn is the following wt.%: Aramid yarn or yarn 10-50, fiber yarn based on oxadiazole 90-50. The fabric is made with a fill factor on the basis equal to the fill factor on the weft and constituting 1.1-1.3.

As an aramid yarn or yarn, threads or yarn based on polyparaphenylene terephthalamide, polyparaphenylene benzimidazole terephthalamide and their copolymers, aromatic copolyamide (trademark Rusar ^о ) are used, which provide high strength and fire resistance.

The second component based on oxadiazole (trademark Arselon-S) provides heat resistance, wear resistance, and paintability.

The uniform filling of the fabric with fibrous material in the direction of the warp and weft contributes to an increase in the wear resistance of the fabric by increasing its supporting surface.

The use of a bicomponent filament in the fabric structure allows you to get the most uniform distribution of the oxadiazole component on the fabric surface, which contributes to uniform dyeing of the material in various colors of smooth dyeing, as well as obtaining camouflage printed camouflage patterns on the fabric that ensure the indistinguishability of objects with a natural background and night vision devices that are stable to the effects of light weather. To impart water-oil-dirt-repellent properties, the fabric is additionally treated with an aqueous emulsion of organofluorine compounds.

The invention is illustrated by the following examples.

Example 1

The twill weave fabric is made on the warp and weft of a composite yarn, which is a bicomponent reinforced yarn, in which a aramid multifilament yarn is used on the basis of polyparaphenylene terephthalamide with a linear density of 6.3 tex, and the second component is in the form of a braid of yarn based on oxadiazole with the number of turns 400 cr / m and a linear density of 10 tex. The ratio of raw materials in the combined thread: aramid-based multifilament yarn - 40%, oxadiazole-based fiber yarn - 60%. The fabric is made with a fill factor of warp and weft of 1.1.

Physico-mechanical and physico-chemical properties of the fabric are given in the table.

Example 2

The plain weave fabric is made on the basis and the weft of a combination yarn, which is a bicomponent reinforced yarn, in which a aramid multifilament yarn based on polyparaphenylenebenzimidazole terephthalamide with a linear density of 100 tex is used as a core, and the second component in the form of a braid of yarn based on oxadiazole with an amount a revolution of 600 cr / m and a linear density of 16.7 tex. The ratio of raw materials in the combined thread: aramid-based multifilament yarn - 85%, oxadiazole-based fiber yarn - 15%. The fabric is made with a fill factor of warp and weft equal to 1.2.

Physico-mechanical and physico-chemical properties of the fabric are given in the table.

Example 3

The twill weave fabric is made on the basis and the weft of a combined thread, which is a bicomponent reinforced thread, in which aramid yarn based on a triple aromatic copolyamide with a linear density of 29.4 tex is used as a core, and the second component is a braid of yarn based on oxadiazole with a number of turns of 1000 cr / m and a linear density of 29.4 tex. The ratio of raw materials in the combined yarn: yarn based on aramid - 50%, yarn based on oxadiazole - 50%. The fabric is made with a fill factor of warp and weft of 1.1.

Physico-mechanical and physico-chemical properties of the fabric are given in the table.

Example 4

The twill weave fabric is made on the basis and the weft of a composite thread, which is a bicomponent reinforced thread, in which aramid complex thread based on copolyparaphenylene terephthalamide with a linear density of 29.4 tex and the second component in the form of a braid from yarn based on oxadiazole are used as a core with a number of turns of 600 cr / m and a linear density of 29.4 tex. The ratio of raw materials in the combined thread: a complex thread based on aramid - 40%, yarn based on oxadiazole - 60%. The fabric is made with a fill factor of warp and weft of 1.2.

Physico-mechanical and physico-chemical properties of the fabric are given in the table.

Example 5

The twill weave fabric is made on the basis and the weft of a composite thread, which is a bicomponent reinforced thread, in which aramid complex thread based on copolyparaphenylenebisimidazole terephthalate with a linear density of 200 tex is used as a core, and the second component is in the form of a braid of yarn based on the amount of oxadiazole coil 800 cr / m and a linear density of 200 tex. The ratio of raw materials in the combined thread: aramid-based multifilament yarn - 50%, oxadiazole-based fiber yarn - 50%. The fabric is made with a fill factor of warp and weft of 1.2.

Physico-mechanical and physico-chemical properties of the fabric are given in the table.

Example 6 (comparative).

Technical fire-resistant linen weave fabric has a surface density of 225 g / m ² , the base fabric and weft are made with a 69 tex combined linear density thread with a twist of 240 cr / m, representing a 40 tex linear density aromatic copolyamide fiber thread with a twist of 120 kr / m, twisted with a yarn of fiber based on oxadiazole with a linear density of 29.4 tex with a twist of 660 cr / m. The ratio of raw materials in the combined thread: thread based on aromatic copolyamide - 55%, yarn from fibers based on oxadiazole - 45%. Physico-mechanical and physico-chemical properties of the fabric are given in the table.

As the data in the tables show, the fabric according to the invention is characterized by high strength characteristics, high fire resistance (oxygen index), high color fastness to light, dry and wet friction, the ability to tint in colors that provide camouflage properties, and high wear resistance.

Claims (2)

1. Protective fire-resistant fabric containing a warp and weft of a combined yarn, the first component of which is an aramid yarn twisted with a second component of yarn consisting of oxadiazole fiber, characterized in that the combined yarn is a bicomponent reinforced yarn, in which in the form of a rod, an aramid complex thread of linear density 6.3-200 tex is used, and the second component in the form of a braid of yarn based on oxadiazole with the number of turns 400-1000 twists / m and a linear density of 10 -200 tex in the following ratio of the components of the thread, wt.%: Thread based on aromatic copolyamide 10-50; Oxadiazole-based fiber yarn 90-50; moreover, the fabric is performed with a fill factor on the basis equal to the fill factor on the weft and constituting 1.1-1.3. 2. The fabric according to claim 1, characterized in that as the aramid yarn, yarns based on polyparaphenylene terephthalamide, copolyparaphenylene terephthalamide, polyparaphenylene benzimidazole terephthalamide, copolyparaphenylene benzimidazole terephthalamide, triple aromatic copolyamide are used.