CN112644118A - Low-density high-tensile-strength DuPont fiber fabric and preparation method thereof - Google Patents
Low-density high-tensile-strength DuPont fiber fabric and preparation method thereof Download PDFInfo
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- CN112644118A CN112644118A CN202010899979.6A CN202010899979A CN112644118A CN 112644118 A CN112644118 A CN 112644118A CN 202010899979 A CN202010899979 A CN 202010899979A CN 112644118 A CN112644118 A CN 112644118A
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- 239000000835 fiber Substances 0.000 title claims abstract description 68
- 239000004744 fabric Substances 0.000 title claims abstract description 56
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 title description 2
- 239000000463 material Substances 0.000 claims abstract description 39
- 238000009941 weaving Methods 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 230000004048 modification Effects 0.000 claims abstract description 5
- 238000012986 modification Methods 0.000 claims abstract description 5
- 230000003647 oxidation Effects 0.000 claims abstract description 4
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 4
- 229920000742 Cotton Polymers 0.000 claims description 14
- 239000007787 solid Substances 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 9
- 238000009940 knitting Methods 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- 229920006306 polyurethane fiber Polymers 0.000 claims description 9
- 239000000243 solution Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 7
- 239000012286 potassium permanganate Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 6
- 229920000728 polyester Polymers 0.000 claims description 6
- 238000002791 soaking Methods 0.000 claims description 6
- 239000012670 alkaline solution Substances 0.000 claims description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- UQXKXGWGFRWILX-UHFFFAOYSA-N ethylene glycol dinitrate Chemical compound O=N(=O)OCCON(=O)=O UQXKXGWGFRWILX-UHFFFAOYSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 210000002268 wool Anatomy 0.000 claims 1
- 239000010410 layer Substances 0.000 abstract description 83
- 230000000694 effects Effects 0.000 abstract description 3
- 230000003139 buffering effect Effects 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 abstract description 2
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- 229910002651 NO3 Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- -1 ethylidene nitrate Chemical compound 0.000 description 1
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- 230000001590 oxidative effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/38—Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic Table
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/48—Oxides or hydroxides of chromium, molybdenum or tungsten; Chromates; Dichromates; Molybdates; Tungstates
- D06M11/485—Oxides or hydroxides of manganese; Manganates
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/392—Nitroso compounds; Nitro compounds
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/31—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated nitriles
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
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- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/54—Yield strength; Tensile strength
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
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- Chemical Kinetics & Catalysis (AREA)
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Abstract
The invention discloses a low-density high-tensile DuPont fiber fabric and a preparation method thereof, wherein the low-density high-tensile DuPont fiber fabric mainly comprises the following raw material components: a velvet layer, an anti-deformation layer and a base material layer; the preparation method of the low-density high-tensile DuPont fiber fabric comprises the following steps: yarn modification, oxidation, yarn twisting, weaving, and bonding. According to the invention, the composite bonding reinforcing material is adopted, and the mutual bonding among the upper velvet layer, the deformation-resistant layer and the base material layer is adopted, so that the fine treatment of the upper velvet layer on the surface layer of the fabric is realized; on the other hand, the whole fabric is subjected to different tensile buffering effects of different fabric layers in the warp and weft directions, so that the tensile strength of the whole fabric is enhanced; meanwhile, the three layers of fabrics are bonded with each other, so that the overall fabric has the effect of lower thickness under the condition of higher strength.
Description
Technical Field
The invention belongs to the technical field of knitted fabrics, and particularly relates to a low-density high-tensile DuPont fiber fabric and a preparation method thereof.
Background
The fabric is a material for making clothes, the fabric can not only explain the style and characteristics of the clothes, but also directly control the expression effects of the color and the shape of the clothes, in addition, the textile is used for the clothes and also widely applied to various fields such as decoration industry and the like, and the fields have high functional requirements on the textile, so that the development of the functional textile not only can generate great economic benefit and social benefit, but also is a great trend requirement of the development of the textile in the world at present.
The existing various fabrics are widely used in various fields, however, the defects below are often caused in practical use, cotton materials in the common fabrics have the advantages of softness and air permeability, obvious deformation is easily generated in use, and meanwhile, the thickness of the fabrics is often increased to influence the applicability of the fabrics when the functions of tensile resistance and deformation prevention are increased.
Disclosure of Invention
The invention aims to: in order to solve the technical problems in reality, a low-density high-tensile DuPont fiber fabric and a preparation method thereof are provided.
The technical scheme adopted by the invention is as follows:
the low-density high-tensile-strength DuPont fiber fabric mainly comprises the following raw material components: a velvet layer, an anti-deformation layer and a base material layer;
the upper velvet layer comprises the following components in parts by weight: 30-45 parts of cotton fibers, 12-18 parts of silk fibers and 3-6 parts of sponge;
the anti-deformation layer comprises the following components in parts by weight: 14-16 parts of polyester fiber and 6-7 parts of polyacrylonitrile;
the base material layer comprises the following components in parts by weight: 4-5 parts of cotton fiber and 2-3 parts of polyurethane fiber.
The low-density high-tensile DuPont fiber fabric comprises the following raw materials in percentage by weight: deformation resistant layer: base material layer 1: 1: 3.
a preparation method of a low-density high-tensile DuPont fiber fabric comprises the following steps:
(1) yarn modification: soaking silk fibers in an alkaline solution, heating, cooling to normal temperature, filtering to obtain solids to obtain modified yarn upper velvet layer fibers, soaking polyacrylonitrile and ethylene nitrate, heating, cooling to normal temperature, filtering to obtain solids to obtain modified yarn anti-deformation layer fibers;
(2) and (3) oxidation: placing the yarn-changed upper fluff layer fiber and the sponge in a potassium permanganate solution, performing centrifugal mixing through a horizontal centrifuge, filtering to obtain solids to obtain oxidized upper fluff layer fiber, mixing polyurethane fiber and absolute ethyl alcohol according to a certain proportion, performing centrifugal mixing through the horizontal centrifuge, drying, and removing the absolute ethyl alcohol to obtain oxidized base material layer fiber;
(3) twisting yarn: washing and drying the oxidized upper pile layer fibers, twisting the dried fibers and the cotton fibers respectively to obtain upper pile layer warp yarns and upper pile layer weft yarns, twisting the anti-deformation layer fibers and the polyester fibers after yarn change respectively to obtain anti-deformation layer warp yarns and anti-deformation layer weft yarns, and twisting the oxidized base material layer fibers and the cotton fibers respectively to obtain base material layer warp yarns and base material layer weft yarns;
(4) weaving: weaving warp yarns of the upper pile layer and weft yarns of the upper pile layer by adopting a warp knitting jacquard structure to obtain an upper pile layer, weaving warp yarns of the deformation-resistant layer and weft yarns of the deformation-resistant layer by adopting a weft knitting interlock texture structure to obtain a deformation-resistant layer, and weaving warp yarns of the base material layer and weft yarns of the base material layer by adopting a plain knitting weaving structure to obtain the base material layer;
(5) bonding: and bonding the upper velvet layer, the anti-deformation layer and the base material layer according to the weight ratio to obtain the low-density high-tensile DuPont fiber fabric.
Wherein the alkaline solution in the step (1) is 0.01mol/L calcium hydroxide solution.
Wherein, the heating temperature in the step (1) can be between 75 and 80 ℃.
Wherein the concentration of the potassium permanganate solution in the step (2) is 1: 1000 potassium permanganate solution.
Wherein, the rotating speed of the horizontal centrifuge in the step (2) is 1500 revolutions per minute.
Wherein the weight ratio of the polyurethane fiber in the step (2) to the absolute ethyl alcohol is 1: 5.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
according to the invention, the composite bonding reinforcing material is adopted, and the mutual bonding among the upper velvet layer, the deformation-resistant layer and the base material layer is adopted, so that the fine treatment of the upper velvet layer on the surface layer of the fabric is realized; on the other hand, the whole fabric is subjected to different tensile buffering effects of different fabric layers in the warp and weft directions, so that the tensile strength of the whole fabric is enhanced; meanwhile, the three layers of fabrics are bonded with each other, so that the overall fabric has the effect of lower thickness under the condition of higher strength.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The first embodiment of the invention provides a low-density high-tensile-strength DuPont fiber fabric, which mainly comprises the following raw material components: a velvet layer, an anti-deformation layer and a base material layer;
the upper velvet layer comprises the following components in parts by weight: 30 parts of cotton fibers, 12 parts of silk fibers and 3 parts of sponges;
the anti-deformation layer comprises the following components in parts by weight: 14 parts of polyester fiber and 6 parts of polyacrylonitrile;
the base material layer comprises the following components in parts by weight: 12 parts of cotton fiber, 6 parts of polyurethane fiber, and the low-density high-tensile DuPont fiber fabric comprises the following raw material components in percentage by weight: deformation resistant layer: base material layer 1: 1: 1.
in the second embodiment, a method for preparing a low-density high-tensile du pont fiber fabric comprises the following steps:
(1) yarn modification: soaking silk fibers in 0.01mol/L calcium hydroxide solution, heating to 75 ℃, preserving heat for 1h, cooling to normal temperature, filtering to obtain solids to obtain modified yarn upper velvet layer fibers, soaking polyacrylonitrile and ethylidene nitrate, heating, cooling to normal temperature, filtering to obtain solids to obtain modified yarn anti-deformation layer fibers;
(2) and (3) oxidation: and (3) placing the upper velvet layer fiber and the sponge with the changed yarns into a sponge with the concentration of 1: 1000, centrifuging and mixing the potassium permanganate solution for 20min at the rotating speed of 1500 revolutions per minute by a horizontal centrifuge, filtering the solution to obtain solid, oxidizing the solid to obtain upper fluff layer fibers, mixing the polyurethane fibers and absolute ethyl alcohol according to the weight ratio of 1:5, centrifuging and mixing the polyurethane fibers and the absolute ethyl alcohol at the rotating speed of 1500 revolutions per minute for 20min by the horizontal centrifuge, drying the mixture, and removing the absolute ethyl alcohol to obtain oxidized base material layer fibers;
(3) twisting yarn: washing and drying the oxidized upper pile layer fibers, twisting the dried fibers and the cotton fibers respectively to obtain upper pile layer warp yarns and upper pile layer weft yarns, twisting the anti-deformation layer fibers and the polyester fibers after yarn change respectively to obtain anti-deformation layer warp yarns and anti-deformation layer weft yarns, and twisting the oxidized base material layer fibers and the cotton fibers respectively to obtain base material layer warp yarns and base material layer weft yarns;
(4) weaving: weaving warp yarns of the upper pile layer and weft yarns of the upper pile layer by adopting a warp knitting jacquard structure to obtain an upper pile layer, weaving warp yarns of the deformation-resistant layer and weft yarns of the deformation-resistant layer by adopting a weft knitting interlock texture structure to obtain a deformation-resistant layer, and weaving warp yarns of the base material layer and weft yarns of the base material layer by adopting a plain knitting weaving structure to obtain the base material layer;
(5) bonding: and bonding the upper velvet layer, the anti-deformation layer and the base material layer according to the weight ratio to obtain the low-density high-tensile DuPont fiber fabric.
Test example in order to test the performance of the low-density high-tensile dupont fiber fabric (example two) obtained by the present invention, various indexes were measured, and the results are shown in table 1.
And (3) testing environment: drying temperature: 24 ℃; and (3) wetting and temperature: 18 ℃; humidity: 45 percent.
Testing an instrument: the fabric tensile strength instrument (the tensile speed can be adjusted within the range of 100mm/min +/-10 mm/min), and the gauge length is set to be 100 mm.
Test objects: rectangular strips with the net size of 3cm multiplied by 8cm are taken, the warp and weft strengths are respectively taken as 3 blocks in consideration of the randomness of textile testing and sampling, and the stretching results are averaged.
Table 1: the tearing performance and the quality of the low-density high-tensile DuPont fiber fabric are tested.
As can be seen from table 1, the tensile force of the low-density high-tensile du pont fiber fabric provided in embodiment 2 until the fabric is torn in the warp and weft directions is greater than that of the existing conventional material (e.g., jean), and the cotton fiber material (more than 50%) is widely used in the raw material of the low-density high-tensile du pont fiber fabric, so that the overall air permeability of the fabric is ensured, and compared with the fuchun textile fabric with a small thickness difference, the tear strength of the fabric is much greater than that of the fuchun textile fabric, and the fabric has the advantages of lower thickness and higher strength compared with other fabrics, and has the characteristics of low density and strong tensile tear.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The low-density high-tensile DuPont fiber fabric is characterized by mainly comprising the following raw material components: a velvet layer, an anti-deformation layer and a base material layer;
the upper velvet layer comprises the following components in parts by weight: 30-45 parts of cotton fibers, 12-18 parts of silk fibers and 3-6 parts of sponge;
the anti-deformation layer comprises the following components in parts by weight: 14-16 parts of polyester fiber and 6-7 parts of polyacrylonitrile;
the base material layer comprises the following components in parts by weight: 4-5 parts of cotton fiber and 2-3 parts of polyurethane fiber.
2. The low-density high-tensile DuPont fiber fabric of claim 1, wherein the raw material components of the low-density high-tensile DuPont fiber fabric are an upper wool layer: deformation resistant layer: base material layer 1: 1: 3.
3. a preparation method of a low-density high-tensile DuPont fiber fabric is characterized by comprising the following steps of:
(1) yarn modification: soaking silk fibers in an alkaline solution, heating, cooling to normal temperature, filtering to obtain solids to obtain modified yarn upper velvet layer fibers, soaking polyacrylonitrile and ethylene nitrate, heating, cooling to normal temperature, filtering to obtain solids to obtain modified yarn anti-deformation layer fibers;
(2) and (3) oxidation: placing the yarn-changed upper fluff layer fiber and the sponge in a potassium permanganate solution, performing centrifugal mixing through a horizontal centrifuge, filtering to obtain solids to obtain oxidized upper fluff layer fiber, mixing polyurethane fiber and absolute ethyl alcohol according to a certain proportion, performing centrifugal mixing through the horizontal centrifuge, drying, and removing the absolute ethyl alcohol to obtain oxidized base material layer fiber;
(3) twisting yarn: washing and drying the oxidized upper pile layer fibers, twisting the dried fibers and the cotton fibers respectively to obtain upper pile layer warp yarns and upper pile layer weft yarns, twisting the anti-deformation layer fibers and the polyester fibers after yarn change respectively to obtain anti-deformation layer warp yarns and anti-deformation layer weft yarns, and twisting the oxidized base material layer fibers and the cotton fibers respectively to obtain base material layer warp yarns and base material layer weft yarns;
(4) weaving: weaving warp yarns of the upper pile layer and weft yarns of the upper pile layer by adopting a warp knitting jacquard structure to obtain an upper pile layer, weaving warp yarns of the deformation-resistant layer and weft yarns of the deformation-resistant layer by adopting a weft knitting interlock texture structure to obtain a deformation-resistant layer, and weaving warp yarns of the base material layer and weft yarns of the base material layer by adopting a plain knitting weaving structure to obtain the base material layer;
(5) bonding: and bonding the upper velvet layer, the anti-deformation layer and the base material layer according to the weight ratio to obtain the low-density high-tensile DuPont fiber fabric.
4. The method for preparing a low-density high-tensile DuPont fiber fabric according to claim 3, wherein the alkaline solution in step (1) is 0.01mol/L calcium hydroxide solution.
5. The preparation method of the low-density high-tensile DuPont fiber fabric, according to claim 3, is characterized in that: the heating temperature in the step (1) can be between 75 and 80 ℃.
6. The preparation method of the low-density high-tensile DuPont fiber fabric, according to claim 3, is characterized in that: the concentration of the potassium permanganate solution in the step (2) is 1: 1000 potassium permanganate solution.
7. The preparation method of the low-density high-tensile DuPont fiber fabric, according to claim 3, is characterized in that: and (3) the rotating speed of the horizontal centrifuge in the step (2) is 1500 revolutions per minute.
8. The preparation method of the low-density high-tensile DuPont fiber fabric, according to claim 3, is characterized in that: the weight ratio of the polyurethane fiber to the absolute ethyl alcohol in the step (2) is 1: 5.
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