RU2337304C2 - Fabric and multilayer protactive pack made of it - Google Patents

Abstract

FIELD: textile.

SUBSTANCE: it is presented fabric for manufacturing ballistic durable production, described by surface density, not exceeding 200 g/m². Fabric is implemented by linen, twill or sateen weave of filament with line density, not exceeding 120 tex. Fiber is formed by using draw die, containing not less then 300 holes, of extile solution of aromatic copolymer acid chloride dibasic terephthalic acid and diamine benzimidazole and p-phenylene diamine. It is proposed also ballistic durable pack containing of fabric layers and having specific ballistic stability V₅₀ till 170 m/s·kg.

EFFECT: increasing of fabric ballistic stability.

3 cl, 3 tbl, 3 ex

Description

The invention relates to the textile industry and can be used in the manufacture of protective technical materials and special protective clothing from a number of damaging factors.

The prior art patent RU No. 2155313 IPC from 11.24.1999 known fabric made of aramid threads, consisting of the same number of high-strength microfilaments of the Rusar family of circular cross section of the same diameter, not exceeding 10 microns. The specified plain weave fabric is made of 14.3 tex yarn with a warp density of warp and a weft of 37 nit / cm and 38 nit / cm, respectively, and has a surface density not exceeding 120 g / m ² . An armored panel containing known tissue has a density of up to 6 kg / m ² and shows a speed of 50% non-penetration of up to 700 m / s, or, taking into account the weight, specific V ₅₀ up to 116.7 m / s / kg.

It is known from the prior art to manufacture bulletproof vests (EP 0241681 B1 dated 02.25.87.) From aramid multifilament yarns with a total linear density of less than 110 tex, mainly below 85 tex with a linear density of an individual filament from 0.8 to 1.4 dtex.

The bulletproof soft vests described in the patent, made from plain weave fabrics, have a surface density of 220 g / m ² , a base and weft density of 13 nit / cm and 12.5 nit / cm, respectively. The protective package has a speed of 50% non-penetration V ₅₀ = 480 m / s, or taking into account the weight of the layers of the package specific ballistic resistance V ₅₀ = 156 m / s / kg soft package.

The technical problem to which the present invention is directed is to increase the specific ballistic resistance of the product.

This task is achieved by the fact that the fabric of the multifilament yarn is made by the main weave - linen, twill, satin.

It has a surface density not exceeding 200 g / m ² . The multifilament yarn is formed from a spinning solution of an aromatic copolymer of dibasic terephthalic acid chloride and benzimidazole diamines and p-phenylenediamine at a spinning speed of up to 18 m / min and a die drawing of up to +5.0% to achieve an enlarged surface of the ordered structure characterized by at least R ₁₀₂₀ equal to at least , fifteen.

The surface of the ordered structure is characterized by the dichroism of the 1020 cm ^-1 band, which is responsible for the phenyl radical vibrations in the p position.

The multifilament yarn is spun through a spinneret containing at least 300 holes.

The resulting multifilament yarn has a linear density not exceeding 120 tex and is treated with an aqueous polymer solution after the rewinding process.

The multifilament yarn contains elementary fibers of circular and non-circular cross section with a diameter not exceeding 10 microns.

According to the invention, which makes it possible to achieve the technical task, a protective bag is proposed made of fabric layers according to any one of paragraphs 1-4 and having a specific ballistic resistance of V ₅₀ up to 170 m / s / kg.

The invention is illustrated by the following examples.

Example 1

The fabric is produced by sateen weaving from a composite filament of linear density 29.4 tex, molded from a spinning solution of an aromatic copolymer of terephthalic acid dichloride with diamine benzimidazole and p-phenylenediamine at a speed of 18 m / min and a hood +5.0% through a spinneret with a number of holes of 300 n. fiber circular cross section with R ₁₀₂₀ equal to 18.

A complex thread with a twist of 50 cr / m after rewinding is treated with a polymer solution with the application of 1.5% by weight of fabric.

The characteristics of the complex yarn, fabric and protective package based on it are shown in table 1.

Table 1 No. Indicator Value one The surface density of the fabric, g / m ² 126 2 Weave satin 3 The linear density of the multifilament yarn, tex warp / weft 29.4 / 29.4 four Specific breaking load of a multifilament yarn, cN / tex 265 5 The linear density of the elementary fiber in the thread, microns 9.28 6 The magnitude of the dichroism of the strip 1020 cm ^-1 for elementary fiber R ₁₀₂₀ 18.5 7 Weight of protective bag, kg 4.0 8 Ballistic resistance of the package V ₅₀ , m / s 680 9 Specific ballistic resistance V ₅₀ m / s / kg 170

Example 2

The fabric was produced by plain weaving from a 58.8 tex complex linear density yarn formed from a dope of an aromatic copolymer of terephthalic acid dichlohydride with benzimidazole diamine and p-phenylenediamine at a speed of 16 m / min and a hood of 13.0% through a spinneret with 590 holes. elementary fibers of circular cross section with R ₁₀₂₀ equal to 17.3.

The complex thread with a twist of 50 cr / m after rewinding is treated with a polymer solution with the application of 1.2% by weight of fabric. The characteristics of the complex yarn, fabric and protective package based on it are shown in table 2.

table 2 No. Indicator Value one The surface density of the fabric, g / m ² 178 2 Weave linen 3 The linear density of the multifilament yarn, tex warp / weft 58.8 / 58.8 four Specific breaking load of a multifilament yarn, cN / tex 250 5 The linear density of the elementary fiber in the thread, microns 9.35 6 The magnitude of the dichroism of the strip 1020 cm ^-1 for elementary fiber 17.3 7 Weight of protective bag, kg 4.0 8 Ballistic resistance of the package V ₅₀ , m / s 648 9 Specific ballistic resistance V ₅₀ m / s / kg 162

Example 3

The fabric was produced by twisting 2/2 twill from a 120 tex multifilament yarn formed from a spinning dope of an aromatic copolymer of terephthalic acid dichlohydride with benzimidazole diamine and p-phenylenediamine at a speed of 12 m / min and a hood - 1.5% through a die with a number of holes of 1180. the thread consists of elementary fibers of non-circular cross section with R ₁₀₂₀ equal to 16.1.

A complex yarn with a twist of 100 cr / m after rewinding was treated with a polymer solution with 1.4% of the weight of the fabric.

The characteristics of the complex yarn, fabric and protective package based on it are shown in table 3.

Table 3 No. Indicator Value one The surface density of the fabric, g / m ² 200 2 Weave twill 2/2 3 The linear density of the multifilament yarn, tex warp / weft 120/120 four Specific breaking load of a multifilament yarn, cN / tex 237 5 The linear density of the elementary fiber in the thread, microns 9.44 6 The magnitude of the dichroism of the strip 1020 cm ^-1 for elementary fiber 16.1 7 Weight of protective bag, kg 4.0 8 Ballistic resistance of the package V ₅₀ , m / s 640 9 Specific ballistic resistance V ₅₀ m / s / kg 160

Claims (3)

1. Fabric for the manufacture of ballistic-resistant products, characterized by a surface density not exceeding 200 g / m ² and made by plain, twill or satin weaving from a multifilament yarn with a linear density not exceeding 120 tex, molded using a die containing at least 300 holes, from a spinning solution of an aromatic copolymer of dibasic terephthalic acid chloride and benzimidazole and p-phenylenediamine diamines at a speed of up to 18 m / min and a die drawing of up to + 5.0% with an abutment surface a nucleated structure of R ₁₀₂₀ of at least 15, rewound and then treated with an aqueous polymer solution. 2. The fabric according to claim 1, in which the multifilament yarn contains elementary fibers with a diameter not exceeding 10 microns. 3. Ballistic resistant package consisting of fabric layers according to any one of claims 1 and 2 and having a specific ballistic resistance V ₅₀ up to 170 m / s / kg