The fabric for the substrate of the upper layer heat-shielding and heat-reflecting costume

 

(57) Abstract:

The inventive fabric is made of plain or twill weave 1/2 filled with 110-134%. on the basis of and duck from heterogeneous twisted yarns based on heat-resistant polymers. Each woven heterogeneous primary and the weft thread is made of two strands - filament yarn with a diameter ratio of the complex and elementary filaments in each strand, equal 53-200:1. The direction of twist of each twisted heterogeneous threads with the same direction of twist of each strand. The angle of the filament yarn to the axis of the torsion heterogeneous threads equal 20-45 deg. The fabric allows you to increase the adhesion strength, to estimate the ratio of the tangential resistance and residual tensile strain in the warp and weft. 1 C.p. f-crystals.

The invention relates to the textile industry, in particular to the tissues for the substrate of the upper layer heat-shielding and heat-reflecting costume for workers gusher service.

In the process of production work in various sectors of the economy there are a number of extreme factors, under which it is necessary to provide not just the activity, but you is necause when extinguishing fires, the elimination of burning gas and oil gushers, emergency and repair work in process plants with high temperature regime.

This invention can also be used for the upper layer insulating suit, outer gloves, footwear, and additional insulating pads on the shoulders, back, arms and knees. Based on the operating conditions of the heat-shielding and heat-reflecting costume, to the substrate of the upper layer have a number of different requirements. Fabric should provide high ergonomics of the kit as a whole, which is reflected also in the evaluation of the convenience of putting on a costume (time dressing with the help of the assistant not to exceed 10 minutes), run it movements that mimic workers (working crowbar, sledge hammer, shovel, torso, squats, carry heavy bags, and so on), removing the suit (time undressing should not exceed 5 minutes).

As a rule, in the process of conducting emergency operations in the estuary zone there are situations during which fantansic may have intermittent contact with an open flame, red-hot elements. Therefore, the small thickness and weight. In addition, it must have a smooth, sliding surface, i.e., to have a small coefficient of tangential resistance to ensure a quick dressing and undressing in extreme situations. One of the essential requirements of the tissues to the substrate is their high adhesion to the binder to produce a high-quality metallic materials based on them, as well as satisfactory tailoring properties of costumes from them.

In addition, powerful burning mos fountains have a strong suction of air bubbling jet of burning fountain, so unacceptable when the heat-reflecting elements in costume, with windage. Therefore, the fabric substrate must possess elasticity, dimensional stability, to have a minimum elongation at break and minimal residual tensile strain to eliminate excessive "hype" of the costume.

Famous fabric of aramid core and filling threads with volumetric filling 58,5-63% (1). The fabric is designed to perception as tensile and anti-friction loads and has a small residual deformations. However, its disadvantages include increased gassnova.

Known fabric for the substrate of the upper layer heat-shielding and heat-reflecting costume containing the main and the weft yarn in the form of twisted yarns based on heat-resistant polymers made of plain or twill weave (2). This fabric is closest to the invention to the technical essence and the achieved result. Disadvantages of fabric are that it has low dimensional stability, high coefficient of tangential resistance and residual tensile deformations. To address these shortcomings in the fabric for the substrate of the upper layer heat-shielding and heat-reflecting costume containing the main and the weft yarn in the form of twisted yarns based on heat-resistant polymers made of plain or twill weave 1/2, it is made with filling 110-134% basic and weft threads made heterogeneous, with each twisted heterogeneous primary and the weft thread is made of two strands of filament yarn with a diameter ratio of the complex and elementary filaments in each strand, equal 58-200: 1 when the direction of twist of each twisted heterogeneous threads with the same direction of twist of each strand, and the angle of kompleksov, or polyheteroarylenes, or polyimide, or mixtures thereof.

The use of twisted nonuniform synthetic fibres based on heat-resistant polymers provides a combination of necessary operational characteristics of fire resistance, resistance to IR-radiation, the adhesion strength, small deformation, the shape that ultimately enhances performance, sewing and ergonomic characteristics of the costume, improves the covering power of tissue, eliminates formation of fixed folds and wrinkles in the process of metallization tissue.

The performance of each twisted heterogeneous primary and weft threads of the two strands of filament yarn with a diameter ratio of the complex and elementary filaments in each strand is equal 58-200:1 provides the necessary satelitte and filling tissue necessary to ensure a strong, durable surface.

In the proposed fabric, the direction of twist of each twisted heterogeneous threads with the same direction of twist of each strand. This is necessary to achieve a compact structure of the woven yarn that reduces the tendency to fibrillation, it is hard threads in textile processing. Out of the total is the second thread in two or more plies should be opposite the direction of twist of its component strands. In the proposed technical solution used nonequilibrium yarns with a twist value needed to improve properties of the tissue. The threads of this structure gives the fabric the required smoothness, reducing the coefficient of tangential resistance of the tissue, thus improving the ergonomics heat of the costume as a whole.

The angle of the filament yarn to the axis of twisted nonuniform threads equal 20-45oprovides the necessary porosity and compact surface, providing in turn the increase in the adhesion strength to the binder, i.e., the efforts of the peel with a metalized film.

Performing fabric of plain or twill weave 1/2 filled with 110-134% provides obtaining a dense smooth durable fabric structure necessary to improve performance and thermal characteristics of the costume as a whole.

Detailed description of the invention consists in the following: cloth received plain or twill weave 1/2 woven heterogeneous threads based on the complex threads RAS, terlan, Armos, phenylon", arimid with filling 110-134% Each twisted nonuniform thread is made of two strands - koelnarena twist each twisted heterogeneous threads with the same direction of twist of each strand, and the angle of the filament yarn to the axis of twisted nonuniform threads equal 20-45o. Thus obtained raw fabrics were subjected to the finishing process the degumming and drying. In General it should be noted that the fabric is on the basis of twisted nonuniform threads of the proposed structures technological and straightforward in all transitions of weaving and dyeing and finishing production.

Example 1. The experimental sample of the fabric weave twill 1/2 filled with 117,3% completed on the basis and duck from heterogeneous twisted yarns based heat-resistant polyheteroarylenes and polyaramide, each woven heterogeneous primary and the weft thread is made with a twist of 140-180 kr/m Z-direction of the two strands-filament yarn SVM with the diameter ratio of the complex and filament 60:1, and filament yarn phenylon " with the diameter ratio of the complex and filament equal to 100: 1. When the direction of twist of each twisted heterogeneous threads with the same direction of twist of each strand, and the angle of the filament yarn to the axis of twisted nonuniform threads equal 20-41o.

Example 2. Experimental tissue sample is similar to example 1, but the fabric made of linen perepolnennie fabric is 110,4% and each woven heterogeneous primary and the weft thread is made with a twist of 190-210 kr/m the ratio of the diameters of the complex and filament SVM is 100:1, and the angle of the filament yarn to the axis of twisted nonuniform threads equal 25-45o.

Example 4. Experimental tissue sample is similar to example 3, but the fabric is made of plain weave with a content equal to 115,2%

Example 5. Experimental tissue sample is similar to example 1, but the filling of the fabric is uniforms, 127.6% Fabric made on the basis of and duck from heterogeneous twisted yarns based heat-resistant polyheteroarylenes and polyimides, each twisted nonuniform thread made with a twist of 160-180 cu/m of the two strands-filament yarn SVM with the diameter ratio of the complex and filament 60:1, and the complex threads arimid with the diameter ratio of the complex and filament equal to 100:1. The angle of inclination of the filament yarn to the axis of twisted nonuniform threads equal 23-37o.

Example 6. Experimental tissue sample is similar to example 5, but the fabric is made of plain weave with a content equal to 133,2%

Example 7. The experimental sample of the fabric weave twill 1/2 filled with 116,6% completed on the basis and duck from non-uniform twisting of the threads on the core is twisted heterogeneous primary and the weft thread is made with a twist of 200-220 cu/m of the two strands-filament yarn of terlon with the diameter ratio of the complex and filament, equal to 150:1, and filament yarn phenylon " with the diameter ratio of the complex and filament equal to 100:1. When the direction of twist of each twisted heterogeneous strands S and the angle of the filament yarn to the axis of twisted nonuniform threads equal 22-36o.

Example 8. Experimental tissue sample is similar to example 7, but the fabric is made of plain weave with a content equal to uniforms, 127.6%

The test results show a significant increase in the shape, i.e., the elongation at break decreased on the basis of 1.73-2,48 times, duck in 1,81-2.7 times in comparison with the prototype. Then there was the possibility of data duplication substrates fabrics of metallized film with subsequent evaluation of adhesive properties of the composite material. The test results show that the adhesion strength (force delamination offered fabrics) increased to 1.26-1.5 times, and the residual tensile strain decreased on the basis of 10.0-14.4 times, duck 14.4-28.8 times compared to the prototype. The fabric turns out to be dense, durable, formoustojchivy, smooth with a large contact surface area, which promotes the formation of strong mono - or bimolecular layer of the binder (the m

Consequently, the process of duplicating this woven substrate increases the adhesion of tissue to the binder and formed a strong bond fabric with a metallic coating. All this allows to significantly increase the operational reliability of the heat-shielding and heat-reflecting costume for workers gusher service.

Thus, the kit using the proposed substrate fabric for the top layer heat-shielding and heat-reflecting costume completely protects the person is resistant to the influence of the open flame, infrared radiation, water, gas condensate and oil products, provides its ergonomic indicators ease of use in conditions typical of operating at the elimination of burning gas fountains.

In General, this kit improves working conditions, increases security and performance.

1. The fabric for the substrate of the upper layer heat-shielding and heat-reflecting costume containing the main and the weft yarn in the form of twisted yarns based on heat-resistant polymers made of plain or twill weave 1/2, characterized in that the fabric is made with filling 110 134% basic and are of two strands-filament yarn with a diameter ratio of the complex and of filaments in each strand 58 - 200: 1, and the direction of twist of each twisted heterogeneous threads with the same direction of twist of each strand, and the angle of the filament yarn to the axis of twisted nonuniform threads equal to 20 45o.

2. The fabric on p. 1, wherein the filament is made on the basis polyaramide, or polyheteroarylenes, or polyimide, or mixtures thereof.

 

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