Aramid copolymer yarn having low residual sulphur

FIELD: textile.

SUBSTANCE: present invention relates to yarn, containing a polymer, which contains imidazole groups, wherein yarn has content of sulphur from 0.01 to 3.0 wt%, based on weight of yarn.

EFFECT: yarn is characterised by tenacity of 30 cN/dtex (33 3/10 gpd) or higher.

14 cl, 4 dwg, 8 tbl

 



 

Same patents:

FIELD: chemistry.

SUBSTANCE: invention relates to a smoothing composition consisting of one or two polyorganosiloxanes for a yarn, fibre or thread, which can be weaved using a method which does not include a smoothing or washing step, containing said composition on at least part of their surface. The invention also relates to a method of producing said yarn, fibre and thread. The invention also relates to a woven fabric, made from said yarn, fibre or thread, using a method which does not include a smoothing or washing step, i.e. dry weaving. Said yarn, fibre or thread and the obtained woven or knitted fabric are used for air bags.

EFFECT: improved characteristics of the fabric, necessary when the fabric is used for air bags - resistance to attrition, abrasive wear, fire-resistance and thermal stability.

19 cl, 1 tbl, 16 ex

FIELD: textile, paper.

SUBSTANCE: bundles of fibres with a total denier of 10000 to 500000 dtex is obtained by binding thermoplastic, conjugate, continuous fibres, which have an individual fibre denier of 0.5 to 100 dtex/f and whose center of gravity of conjugate components varies between the conjugated components in the cross section of fibre. Thermoplastic, conjugate, continuous fibres composing a bundle of fibres have existing coils from 8 to 30 threads per 2.54 cm. Density of bundles of fibres ranges from 100 to 2000 dtex/mm2 and is determined according to dependence of the D1/(W1xL1), where D1 is a total denier, W1 is width of bundle of fibres and L1 is a thickness of bundle of fibres. The ratio of canvas density after stretching the bundle to the bundle density is equal to 0.10 or less. The method of producing fabrics comprises the step of pulling the said bundle of fibres with an extraction coefficient from 1.4 to 3.0. Canvas with a total denier from 10000 to 1000000 dtex contains thermoplastic, conjugate, continuous fibres aligned in one direction and have an individual filament denier of 0.5 to 100 dtex/f and whose center of gravity of conjugate components varies between the conjugated components in fibre cross-section. Thermoplastic, conjugate, continuous fibres have spiral circuits from 10 to 100 circuits per 2.54 cm. Density of canvas ranges from 5 to 80 dtex/mm2 and is determined from the dependence of D2 / (W2xL2), where D2 is total denier, W2 is a canvas width, and L2 is canvas thickness. Presence on the fibres of more than 100 spiral circuits per 2.54 cm at a canvas density from 10 to 100 dtex/mm2 is possible The item is made of canvas. In the product the canvas is combined with the help of a set of partial sections of thermal bonding with another canvas or coating without spiral circuits, or with other canvas or coating with less spiral circuits. Loop from which a different fabric or coating extrudes is formed between the partial areas of thermo-attachment. The product can contain many components with fibre length from 3 to 50 mm, thermally attached with the parts to canvas or covering that serves as the base. With the use of a part or a product the final product is received.

EFFECT: obtaining the bundles which is capable of wrapping in the structure with a high density of fibres and which has properties ensuring uniformity of canvas, its high volume and soft tactile properties.

9 cl, 2 tbl

The invention relates to textile production

The invention relates to a method of manufacturing a composite harness from the polymer matrix reinforced torn by the tension of the fibers, and so manufactured product

FIELD: textile, paper.

SUBSTANCE: bundles of fibres with a total denier of 10000 to 500000 dtex is obtained by binding thermoplastic, conjugate, continuous fibres, which have an individual fibre denier of 0.5 to 100 dtex/f and whose center of gravity of conjugate components varies between the conjugated components in the cross section of fibre. Thermoplastic, conjugate, continuous fibres composing a bundle of fibres have existing coils from 8 to 30 threads per 2.54 cm. Density of bundles of fibres ranges from 100 to 2000 dtex/mm2 and is determined according to dependence of the D1/(W1xL1), where D1 is a total denier, W1 is width of bundle of fibres and L1 is a thickness of bundle of fibres. The ratio of canvas density after stretching the bundle to the bundle density is equal to 0.10 or less. The method of producing fabrics comprises the step of pulling the said bundle of fibres with an extraction coefficient from 1.4 to 3.0. Canvas with a total denier from 10000 to 1000000 dtex contains thermoplastic, conjugate, continuous fibres aligned in one direction and have an individual filament denier of 0.5 to 100 dtex/f and whose center of gravity of conjugate components varies between the conjugated components in fibre cross-section. Thermoplastic, conjugate, continuous fibres have spiral circuits from 10 to 100 circuits per 2.54 cm. Density of canvas ranges from 5 to 80 dtex/mm2 and is determined from the dependence of D2 / (W2xL2), where D2 is total denier, W2 is a canvas width, and L2 is canvas thickness. Presence on the fibres of more than 100 spiral circuits per 2.54 cm at a canvas density from 10 to 100 dtex/mm2 is possible The item is made of canvas. In the product the canvas is combined with the help of a set of partial sections of thermal bonding with another canvas or coating without spiral circuits, or with other canvas or coating with less spiral circuits. Loop from which a different fabric or coating extrudes is formed between the partial areas of thermo-attachment. The product can contain many components with fibre length from 3 to 50 mm, thermally attached with the parts to canvas or covering that serves as the base. With the use of a part or a product the final product is received.

EFFECT: obtaining the bundles which is capable of wrapping in the structure with a high density of fibres and which has properties ensuring uniformity of canvas, its high volume and soft tactile properties.

9 cl, 2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to a smoothing composition consisting of one or two polyorganosiloxanes for a yarn, fibre or thread, which can be weaved using a method which does not include a smoothing or washing step, containing said composition on at least part of their surface. The invention also relates to a method of producing said yarn, fibre and thread. The invention also relates to a woven fabric, made from said yarn, fibre or thread, using a method which does not include a smoothing or washing step, i.e. dry weaving. Said yarn, fibre or thread and the obtained woven or knitted fabric are used for air bags.

EFFECT: improved characteristics of the fabric, necessary when the fabric is used for air bags - resistance to attrition, abrasive wear, fire-resistance and thermal stability.

19 cl, 1 tbl, 16 ex

FIELD: chemistry.

SUBSTANCE: fibre is obtained from a polymer containing imidazole groups. The fibre additionally contains: i) a halide anion present in an amount in the range of 0.05 to 20.1 wt %, based on the weight of the fibre; ii) sulphur, where the sulphur is present in the fibre in an amount in the range of 0.05 to 3 wt %.

EFFECT: invention enables to produce fibres having improved tensile strength.

21 cl, 4 dwg, 12 tbl, 9 ex

FIELD: chemistry; textile and paper.

SUBSTANCE: invention relates to chemical engineering of textile materials and fire-resistant fibres, yarn and fabric therefrom. Fire-resistant staple spun yarn comprises at least one fire-resistant fibre containing partially aromatic polyamide and non-halogenated fire retardant, and additionally contains additional fibre.

EFFECT: considered fibre and yarn when mixed with other fire-resistant fibres do not exhibit dangerous “scaffolding effect”, provide good fire resistance, prevent dripping and adhesion, are wear-resistant and are suitable for processing into wear-resistant, durable fire-resistant fabric, canvas or piece of clothing.

22 cl, 14 dwg, 2 tbl

FIELD: textile.

SUBSTANCE: present invention relates to yarn, containing a polymer, which contains imidazole groups, wherein yarn has content of sulphur from 0.01 to 3.0 wt%, based on weight of yarn.

EFFECT: yarn is characterised by tenacity of 30 cN/dtex (33 3/10 gpd) or higher.

14 cl, 4 dwg, 8 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to high modulus high strength fiber made of ultrahigh molecular weight polyethylene (UHMWPE) and a method for its preparation. Methods are described for obtaining threads and multithread yarn from UHMW polyethylene (UHMWPE), as well as the yarn and products made thereof. Each method provides UHMWPE threads with strength of 45 to 60 grams/denier.

EFFECT: invention provides an effective way to create yarn from ultrahigh molecular weight high strength polyethylene or with higher productivity on an industrial scale.

10 cl, 6 ex

FIELD: chemistry.

SUBSTANCE: fibers are prepared by wet spinning, comprising the steps of feeding a spinning solution containing carbon nanotubes to a spinneret, spinning solution extruding through at least one spinning orifice in the spinneret to form the spun carbon nanotube fibers, spun carbon nanotube fibers coagulating in a coagulation medium to form coagulated carbon nanotube fibers, where the carbon nanotube fibers are drawn with a draw ratio greater than 1.0, and where the carbon nanotubes have a length of at least 0.5 microns.

EFFECT: invention provides carbon nanotube fibers with a resistance below 120 microO⋅cm, high elasticity modulus.

18 cl, 2 dwg, 1 tbl, 7 ex

FIELD: transportation.

SUBSTANCE: strengthening layer has the plurality of parallel tire cords, spaced apart, and mentioned tire cords are hybrid cords, composed of at least two multifilaments, twisted with each other. The first multifilament is the viscose multifilament, and the other multifilament is non-metallic multifilament, which consists from the material, that is not identical to the first multifilament. The viscose multifilament was subjected to exposure at environmental conditions, determined by the standard DIN EN ISO 139-1: 2005, and after exposure it has the linear density of the filament <1100 dtex and the tensile strength ≥45 sN/tex. The hybrid cord has the cord linear density ≤3000 dtex.

EFFECT: creating from the environmentally friendly material the reinforcing layers in the elastomeric products with high physical properties, in particular its usage in the tires with the relatively low rolling resistance.

14 cl, 2 dwg, 1 tbl

Up!