RU2182196C1 - Cloth for protection against aggressive medium - Google Patents

Abstract

FIELD: textile industry; manufacture of fabrics for protection against aggressive media. SUBSTANCE: proposed cloth includes interwoven systems of warp and weft cellulose-containing fibers; fibers consists of natural and artificial filaments with modified phosphorus- and/or fluorine- containing chemical compounds with cellulose molecules at the following ratio, mass-%: cotton, 25 to 75; high-modulus viscose, 75 to 25; modified additives are equal to 5-25% of its mass. EFFECT: enhanced durability in aggressive media. 3 cl, 2 tbl

Description

 The invention relates to the textile industry, in particular to special fabrics for workwear that protect a person from the harmful effects of an aggressive external environment in the workplace.

 Known fire retardant fabric (1), containing interwoven systems of warp and weft threads of cotton fibers impregnated with a flame retardant, is the closest analogue.

 The disadvantage of this fabric is limited use only for fire protection purposes. A large amount of cotton in the fabric does not allow reliable fire protection and wear resistance, since it is not purely cellulose due to the presence of various impurities in it.

 Protective fabric (2) is also known, containing interwoven warp and weft threads from cotton yarn and aramid yarn with a ratio of components, wt. %: 70-40 and 30-60, respectively - analogue. This fabric has fire resistance, oil-, water-, dirt-repellent properties and increased wear resistance.

 The disadvantage of this fabric is bending fragility for the manufacture of seams of protective clothing, etc. Therefore, overalls from it are short-lived. Also, such a fabric has deteriorated hygienic properties due to the use of synthetic materials. This fabric is suitable for use only in extreme conditions.

 The aim of this invention is to remedy these disadvantages.

 The technical result achieved by the invention is to obtain fabrics with a complex of protective properties: fire resistance, water, oil, dirt repellent while maintaining the hygienic, aesthetic and physico-mechanical properties of fabrics made from natural cellulose-containing yarns. Also, the invention achieves increased wear resistance.

 The specified technical result in a fabric containing interwoven systems of warp and weft cellulose-containing yarns is achieved by the fact that cellulose-containing yarns are composed of a mixture of natural and artificial fibers with modified phosphorus and / or fluorine-containing chemical compounds, cellulose molecules in the following ratio in wt. %: cotton - 25-75, and viscose high modulus - 75-25, and modifying additives make up 5-25 percent of its mass.

 Further, the technical result is also achieved by the fact that the fabric has a surface density of 260-380 g / m2 and consists of twisted threads of linear density of not more than 50 • 2 tex with a twist coefficient of not more than 40.

 In addition, the result is additionally achieved by the fact that the fabric has a weave of warp and weft threads in the form of 3/1 twill or irregular satin four-cut.

 The inventive fabric was developed in three stages. First, mixed yarns were spun from cotton and high-modulus viscose fibers on spinning machines of the P-76 brand. Then, from the blended yarn obtained on the STB-2-250 weaving machines, the required fabric was produced. Then, the fabric was subjected to chemical processing on the line for a non-crushable finish, as a result of which, under the action of phosphorus and / or fluorine-containing chemical compounds, chemical components (grafting) of additional components were added to the cellulose molecules, which impart a complex of protective properties to cellulose and the entire fabric: fire resistance, water-, oil-, dirt-repellent. At the same time, the hygienic, aesthetic and physico-mechanical properties of fabrics are maintained the same as those of fire-retardant fabric made of cotton threads, but their wear resistance is further increased.

 Further, the invention is illustrated by the examples shown in the tables.

 Table 1 shows a list of examples of the claimed fabric with an indication of their physical and mechanical properties.

 Table 2 shows the protective properties of the tissue examples indicated in the previous table.

 Analysis of the test results of the fabric shows that it can be used for the manufacture of special clothing designed to protect against oil, oil products, oils and fats, water, mechanical stress from abrasion in various microclimate in the workplace, protection from high temperatures and thermal radiation, military personnel when working in the winter and summer periods of the year, civil aviation workers. In addition to this, the fabric can be used for light linings, etc.

Sources of information
1. GOST 11209-85, Cotton and blended fabrics for workwear. Technical conditions, July 23, 1985, p. 2, p. 10, Moleskin one-colored with decoration To.

 2. RF patent 2129173 C1, 6 D 03 D, 15/00, application 98113091/12 dated 06/30/98, Production enterprise "Terlon" - a limited liability partnership. Protective fabric.

Claims (3)

1. A fabric for protection against aggressive media, containing interwoven systems of warp and weft cellulose-containing yarns, characterized in that the yarns consist of a mixture of natural and artificial fibers with modified phosphorus and / or fluorine-containing chemical compounds in cellulose molecules in the following ratio, wt. %:
Cotton - 25-75
High Modulus Viscose - 25-75
and modifying additives make up 5-25% of its mass.  2. The fabric according to claim 1, characterized in that it has a surface tissue density of 260-380 g / sq. m and consists of twisted threads with a linear density of not more than 50 • 2 tex with a twist coefficient of not more than 40.  3. The fabric according to claim 2, characterized in that it has an interweaving of warp and weft threads in the form of twill 3/1 or four-section irregular satin.

Images