CN117488544A - Fabric with waterproof and near infrared shielding properties and preparation method thereof - Google Patents
Fabric with waterproof and near infrared shielding properties and preparation method thereof Download PDFInfo
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- CN117488544A CN117488544A CN202311442414.5A CN202311442414A CN117488544A CN 117488544 A CN117488544 A CN 117488544A CN 202311442414 A CN202311442414 A CN 202311442414A CN 117488544 A CN117488544 A CN 117488544A
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- near infrared
- infrared shielding
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- waterproof
- embryo cloth
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- 239000004744 fabric Substances 0.000 title claims abstract description 149
- 238000002360 preparation method Methods 0.000 title abstract description 13
- 229920000742 Cotton Polymers 0.000 claims abstract description 94
- 210000001161 mammalian embryo Anatomy 0.000 claims abstract description 81
- 229920000728 polyester Polymers 0.000 claims abstract description 61
- OHUPZDRTZNMIJI-UHFFFAOYSA-N [Cs].[W] Chemical compound [Cs].[W] OHUPZDRTZNMIJI-UHFFFAOYSA-N 0.000 claims abstract description 44
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000000725 suspension Substances 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000005406 washing Methods 0.000 claims abstract description 17
- 239000011248 coating agent Substances 0.000 claims abstract description 13
- 238000000576 coating method Methods 0.000 claims abstract description 13
- 238000001035 drying Methods 0.000 claims abstract description 12
- 229910000906 Bronze Inorganic materials 0.000 claims abstract description 11
- 239000010974 bronze Substances 0.000 claims abstract description 11
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000243 solution Substances 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 24
- 238000001125 extrusion Methods 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000013007 heat curing Methods 0.000 claims description 7
- 238000001723 curing Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000007654 immersion Methods 0.000 claims description 2
- 238000004080 punching Methods 0.000 claims 4
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims 3
- 239000005871 repellent Substances 0.000 claims 1
- 239000000835 fiber Substances 0.000 abstract description 8
- 230000035699 permeability Effects 0.000 abstract description 6
- 238000005470 impregnation Methods 0.000 abstract description 3
- 230000000717 retained effect Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 11
- 239000008367 deionised water Substances 0.000 description 6
- 229910021641 deionized water Inorganic materials 0.000 description 6
- 238000003825 pressing Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- UXGNZZKBCMGWAZ-UHFFFAOYSA-N dimethylformamide dmf Chemical compound CN(C)C=O.CN(C)C=O UXGNZZKBCMGWAZ-UHFFFAOYSA-N 0.000 description 5
- 238000004043 dyeing Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 238000001132 ultrasonic dispersion Methods 0.000 description 4
- 238000005345 coagulation Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000004753 textile Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000001112 coagulating effect Effects 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005191 phase separation Methods 0.000 description 2
- 238000001029 thermal curing Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 241000255789 Bombyx mori Species 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000986 disperse dye Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000009931 pascalization Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 230000000191 radiation effect Effects 0.000 description 1
- 230000036561 sun exposure Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C29/00—Finishing or dressing, of textile fabrics, not provided for in the preceding groups
-
- 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
- D06M11/83—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 metals; with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
-
- 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
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
-
- 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
- D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
- D06M23/16—Processes for the non-uniform application of treating agents, e.g. one-sided treatment; Differential treatment
- D06M23/18—Processes for the non-uniform application of treating agents, e.g. one-sided treatment; Differential treatment for the chemical treatment of borders of fabrics or knittings; for the thermal or chemical fixation of cuttings, seams or fibre ends
-
- 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
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
-
- 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
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/32—Polyesters
-
- 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
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/10—Repellency against liquids
- D06M2200/12—Hydrophobic properties
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The invention relates to a fabric with waterproof and near infrared shielding properties and a preparation method thereof, and belongs to the technical field of functional fabrics. The preparation method comprises the following steps of S1, carrying out needling treatment on polyester cotton embryo cloth, washing with water, and drying to obtain pretreated polyester cotton embryo cloth; s2, immersing the pretreated polyester cotton gray cloth into cesium tungsten bronze suspension, and padding to obtain the polyester cotton gray cloth with near infrared shielding performance; and S3, coating TPU solution on one side of the polyester cotton embryo cloth with near infrared shielding performance, solidifying under tension, and then thermally curing to obtain the fabric with waterproof and near infrared shielding performance. Firstly, the embryo cloth is locally destroyed, so that tiny grooves are generated on the surface of the fiber in the embryo cloth. Then, cesium tungsten bronze powder is retained in the inner part of the blank cloth through impregnation and condensed by micropore channels. Finally, the single side of the embryonic cloth is coated with TPU solution and then solidified and thermally cured, so that the fabric has excellent air permeability, waterproof property and near infrared shielding property.
Description
Technical Field
The invention belongs to the technical field of functional fabrics, and particularly relates to a fabric with waterproof and near infrared shielding properties and a preparation method thereof.
Background
Near infrared light in solar energy radiated on the earth accounts for about 49%, a large heat radiation effect is generated to heat an object, uncomfortable heat effect is easy to generate due to strong near infrared irradiation in the outdoor field, meanwhile, partial near infrared light can be absorbed by skin to cause human body damage, and in addition, the color and mechanical damage of outdoor textiles can be accelerated due to long-time near infrared irradiation and humidity change. At present, polyester cotton fabrics with better mechanical properties and stiffness are used as common base fabrics of outdoor products, however, the base fabrics have the problem of poor thermal comfort, and meanwhile, the capability of isolating near infrared rays is worry. In this context, the combination of functional materials with near infrared shielding properties into the printing and dyeing process makes it possible for the base fabric to acquire near infrared shielding properties.
For example, chinese patent application CN 102965974a discloses a preparation process of camouflage tent cloth, and by adding a dye solution of disperse dye for dyeing and ultraviolet absorbent with near infrared shielding function, the tent base cloth has the near infrared green shielding function, light fastness function, high hydrostatic pressure resistance function, and also has the effect of higher water splashing degree. In addition, chinese patent application CN 103757940a discloses a method for manufacturing a high light-proof and anti-infrared tent cloth, which adds an anti-infrared additive to a base cloth dyeing process, so that the base cloth has a certain near infrared shielding function and simultaneously obtains excellent light-resistant color fastness and high waterproof function. However, the addition of near infrared shielding materials to printing and dyeing fuels may increase the pollution of the printing and dyeing process and have limited portability. The cesium tungsten bronze system generally has a large amount of free carriers, namely has stronger free carrier absorption, can better shield infrared light, and has better absorption performance especially in a near infrared band. The nano cesium tungsten bronze powder is compounded into the fiber, so that the near infrared shielding capability of the fiber is considered as a feasible preparation means of the near infrared shielding fiber, for example, chinese patent application CN 114164509A discloses a silk fiber with ultraviolet and near infrared shielding performance, a preparation method and application thereof, and silkworms are fed with feed added with cesium tungsten bronze powder, so that silk with cesium tungsten bronze material is obtained, however, the method has higher cost and low efficiency and is not suitable for large-scale application. Therefore, it is very necessary to develop a new process that is a functional fabric.
Disclosure of Invention
In order to solve the technical problems, the invention provides a fabric with waterproof and near infrared shielding properties and a preparation method thereof. Then the polyester cotton embryo cloth after needling treatment is dipped into cesium tungsten bronze suspension for a plurality of times, so that cesium tungsten bronze powder stays in the embryo cloth and is condensed by micropore channels. And finally, coating a layer of TPU solution on one side of the polyester cotton embryo cloth, solidifying under the condition of pre-tensioning, and then performing heat curing after withdrawing the tensioning to obtain the fabric with waterproof and near infrared shielding properties.
A first object of the present invention is to provide a method for preparing a fabric having waterproof and near infrared shielding properties, comprising the steps of,
s1, carrying out needling treatment on polyester cotton embryo cloth, and washing and drying to obtain pretreated polyester cotton embryo cloth;
s2, immersing the pre-treated polyester cotton embryo cloth in cesium tungsten bronze suspension, and padding to obtain the polyester cotton embryo cloth with near infrared shielding performance;
and S3, coating TPU solution on one side of the polyester cotton embryo cloth with the near infrared shielding performance in S2, solidifying under tension, and then thermally curing to obtain the fabric with the waterproof and near infrared shielding performance.
In one embodiment of the invention, in the step S1, the needle adopted in the needling treatment is a mould pressing needle with a small ball head end, the small ball head is chamfered by 30-60 degrees, the needle length is 15-25 mm, the cross section of the needle is star-shaped, 3-6 opposite grooves are arranged on the side face, the needling mode is unidirectional needling, and the needling density is 4500-7500 needles/m. The needling treatment of polyester cotton embryo cloth can increase the embryo cloth porosity, and simultaneously a certain groove point is reserved on the surface of the fiber.
In one embodiment of the present invention, in S1, the washing medium is deionized water, and the number of times of washing is 5-8 times. The washing can remove the residual dust and the broken part of fiber residues and other impurities on the polyester cotton embryo cloth.
In one embodiment of the present invention, in S1, the drying temperature is 60 ℃ to 80 ℃ and the drying time is 4 hours to 6 hours.
In one embodiment of the present invention, in S2, the cesium tungsten bronze suspension is a mixed solution of nano cesium tungsten bronze powder and water; the particle size of the nano cesium tungsten bronze powder is 30nm-50nm; the cesium tungsten bronze suspension has a concentration of 3g/L to 8g/L.
In one embodiment of the present invention, in S2, the immersion time is 15min-30min; the padding pressure of the padding treatment is 0.2MPa-0.4MPa, the padding speed is 20rpm-22rpm, and the padding times are 3-10 times.
In one embodiment of the invention, in S3, the TPU solution is a mixture of TPU and N, N-dimethylformamide DMF; the concentration of the TPU solution is 20wt% to 30wt%.
In one embodiment of the invention, in S3, the coating of the TPU solution is controlled by a pneumatic device, and is uniformly coated on the polyester-cotton blanket with near-infrared shielding performance under the combined action of gravity and the air pressure of an extrusion groove, wherein the air pressure of the extrusion groove is 0.3MPa-0.4MPa, and the distance from the lowest end of the extrusion groove to the polyester-cotton blanket with near-infrared shielding performance is 10cm-15cm; the thickness of the TPU solution after coating is 0.3mm-0.4mm.
In one embodiment of the present invention, in S3, the ratio of the length of the polyester cotton embryo cloth having near infrared shielding property after the tension is applied to the unloaded tension is 1.05 to 1.08:1.
in one embodiment of the present invention, in S3, the coagulation is achieved by a coagulation bath, and the side of the polyester-cotton blanket having near infrared shielding property, which is not coated with the TPU solution, is contacted with the water surface to be coagulated; the running speed of the polyester cotton embryo cloth with near infrared shielding performance in the coagulating bath is 8m/min-12m/min.
In one embodiment of the present invention, in S3, the heat curing temperature is 140 ℃ to 160 ℃ and the heat curing time is 3min to 5min.
A second object of the present invention is to provide a fabric having waterproof and near infrared shielding properties prepared by the method.
Compared with the prior art, the technical scheme of the invention has the following advantages:
according to the preparation method, the polyester cotton embryonic cloth is locally destroyed by the needle head with the barb, so that tiny grooves are formed on the surface of the fiber in the embryonic cloth. Then, the needle-punched polyester cotton embryo cloth is dipped into cesium tungsten bronze suspension for a plurality of times, so that cesium tungsten bronze powder is retained in the embryo cloth and condensed by micropore channels, the near infrared shielding material nano cesium tungsten bronze powder can be efficiently loaded into the polyester cotton embryo cloth, the polyester cotton embryo cloth has potential of large-scale application, and the polyester cotton embryo cloth has better softness and skin-friendly comfort. The addition of the nano cesium tungsten bronze powder can improve the near infrared shielding capability of the fabric, improve the comfort of the fabric and avoid the damage of the fabric under long-term sun exposure. Finally, one side of the polyester-cotton embryo cloth is coated with a layer of TPU solution with better hydrophobicity, solidification is carried out under the condition of pre-tension, the non-solvent induced phase separation principle is utilized, and the TPU is solidified towards the inner direction of the polyester-cotton embryo cloth by utilizing the tensile stress generated in the double diffusion process of the TPU solvent and the coagulating bath, so that stronger bonding force is generated; and after the tension is removed, the heat curing is carried out, so that cracks generated on the surface are combined with micropore channels generated in the TPU non-solvent induced phase separation process, the fabric has excellent air permeability and waterproof performance, and the fabric with waterproof and near infrared shielding performances is obtained.
Drawings
In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, in which:
FIG. 1 is a flow chart of a process for preparing a fabric having waterproof and near infrared shielding properties according to the present invention;
FIG. 2 is a schematic view of a manufacturing apparatus of a fabric having waterproof and near infrared shielding properties according to the present invention;
FIG. 3 is an enlarged schematic view of the needle tip of the present invention;
FIG. 4 is an infrared absorption graph of a test example of the present invention;
reference numerals illustrate: 201-polyester cotton embryo cloth feeding roller, 202-needling plate, 203-needling base cloth, 204-washing tank, 205-nano cesium tungsten bronze powder suspension tank, 206-polyester cotton embryo cloth with near infrared shielding performance, 207-polyester cotton embryo cloth feeding roller with near infrared shielding performance, 208-TPU solution extrusion tank, 209-scraper, 210-coagulation bath tank, 211-heat curing chamber and 212-finished product collecting roller.
Detailed Description
The present invention is further described in such detail so that those skilled in the art may better understand the invention and practice it, and it is apparent that the described embodiments are only some, but not all, of the embodiments of the invention. It should be understood that the detailed description is intended to illustrate the invention, but is not intended to limit the invention to the particular embodiments disclosed.
In the present invention, unless otherwise defined, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
In the present invention, the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items, unless otherwise indicated.
In the present invention, unless otherwise indicated, all the experimental methods used in the examples of the present invention are conventional methods, and materials, reagents and the like used, unless otherwise indicated, are commercially available.
In the present invention, the TPU used in the examples is purchased from Wanhua, brand WHT-1190IV, unless otherwise specified.
In the present invention, unless otherwise specified, the polyester cotton embryo cloth used in the examples was purchased from Xin Jishi Yu, textile technologies Co., ltd, the polyester cotton ratio was 65/35, and the specification was 123g/m 2 The brand is FC-011.
In the present invention, unless otherwise specified, the nano cesium tungsten bronze powder used in the examples was purchased from Nanotech Inc. of Hengge, hangzhou, model 189619-69-0, purity 99.9%, particle size 40nm, and brand HN-CW30.
In the present invention, the doctor blade used in the examples is made of polytetrafluoroethylene unless otherwise specified.
The schematic diagrams of the preparation device of the fabric with waterproof and near infrared shielding performance are shown in figures 2-3, and the working principle and the working process are as follows: the polyester-cotton raw cloth is fed by a polyester-cotton raw cloth feeding roller 201, the polyester-cotton raw cloth is locally destroyed by needling through a needling plate 202 with a mould pressing needle head, the needled base cloth 203 obtained after needling destruction is put into a washing tank 204 for washing and drying, the dried pretreated polyester-cotton raw cloth is then immersed into a nano cesium tungsten bronze powder suspension tank 205 for many times to obtain polyester-cotton raw cloth 206 with near infrared shielding performance, after the excessive moisture is drained, the polyester-cotton raw cloth is fed by a polyester-cotton raw cloth feeding roller 207 with near infrared shielding performance into a TPU solution extrusion tank 208, the TPU solution is uniformly deposited on one side of the polyester-cotton raw cloth under the combined action of gravity and the air pressure of the extrusion tank, and is solidified through a solidification bath 210 after being coated and taken away by a doctor blade 209, and then is thermally cured through a thermal curing chamber 211 and is collected by a finished product collecting roller 212 to obtain the fabric with waterproof and near infrared shielding performance.
Example 1
Referring to fig. 1, the fabric with waterproof and near infrared shielding properties and the preparation method of the invention specifically comprise the following steps:
s1, carrying out needling treatment on polyester-cotton embryo cloth, washing for 6 times by a washing tank, and drying at 70 ℃ for 5 hours to obtain pretreated polyester-cotton embryo cloth;
the needle head adopted in the needling treatment is a mould pressing needle head of a small ball head end, the chamfer angle of the small ball head is 45 degrees, the length of the needle head is 20mm, the cross section of the needle head is star-shaped, 3 opposite grooves are formed in the side face of the needle head, the needling mode is unidirectional needling, and the density of needling plates is 6000 pieces/m.
S2, dissolving nano cesium tungsten bronze powder in deionized water, performing ultrasonic dispersion in an ultrasonic disperser to obtain nano cesium tungsten bronze powder suspension with the concentration of 5g/L, immersing the pretreated polyester cotton embryo cloth in the nano cesium tungsten bronze powder suspension for 20min, performing padding treatment by a padding machine, and repeating the padding process for 6 times to obtain the polyester cotton embryo cloth with near infrared shielding performance;
wherein the padding pressure of the padding treatment is 0.3MPa, and the padding speed is 20rpm;
s3, dissolving TPU in N, N-dimethylformamide DMF to obtain TPU solution with the concentration of 25wt%, coating the TPU solution on one side of polyester-cotton embryo cloth with near infrared shielding performance, contacting one side of the polyester-cotton embryo cloth with near infrared shielding performance, which is not coated with the TPU solution, with water surface under tension, solidifying in a solidifying bath at the running speed of 10m/min, removing tension, and thermally curing at 150 ℃ for 4min to obtain the fabric with waterproof and near infrared shielding performance;
wherein the air pressure of the extrusion groove is 0.4MPa, and the distance from the lowest end of the extrusion groove to the polyester cotton embryo cloth with near infrared shielding performance is 12cm; the distance between the lowest end of the scraper and the polyester cotton embryo cloth with near infrared shielding performance is 0.35mm; the length ratio of the polyester cotton embryo cloth with near infrared shielding performance to the unloaded tension after the tension is applied is 1.06:1.
example 2
Substantially the same as in example 1, the difference is that: the density of the needling plate is 4500 sheets/m.
Example 3
Substantially the same as in example 1, the difference is that: the density of the needling board is 7500 sheets/m.
Example 4
Substantially the same as in example 1, the difference is that: the concentration of the nano cesium tungsten bronze powder suspension is 3g/L.
Example 5
Substantially the same as in example 1, the difference is that: the concentration of the nano cesium tungsten bronze powder suspension is 7g/L.
Example 6
Substantially the same as in example 1, the difference is that: the time for immersing the nano cesium tungsten bronze powder suspension is 15min.
Example 7
Substantially the same as in example 1, the difference is that: the time for immersing the nano cesium tungsten bronze powder suspension is 25min.
Example 8
Substantially the same as in example 1, the difference is that: the number of times the padding process was repeated was 3.
Example 9
Substantially the same as in example 1, the difference is that: the number of times the padding process was repeated was 10 times.
Example 10
Substantially the same as in example 1, the difference is that: the concentration of the TPU solution was 20% by weight.
Example 11
Substantially the same as in example 1, the difference is that: the concentration of the TPU solution was 30% by weight.
Example 12
Substantially the same as in example 1, the difference is that: the distance between the lowest end of the scraper and the polyester cotton embryo cloth with near infrared shielding performance is 0.3mm.
Example 13
Substantially the same as in example 1, the difference is that: the distance between the lowest end of the scraper and the polyester cotton embryo cloth with near infrared shielding performance is 0.4mm.
Example 14
Substantially the same as in example 1, the difference is that: the length ratio of the polyester cotton embryo cloth with near infrared shielding performance to the unloaded tension after the tension is applied is 1.05:1.
example 15
Substantially the same as in example 1, the difference is that: the difference is that: the length ratio of the polyester cotton embryo cloth with near infrared shielding performance to the unloaded tension after the tension is applied is 1.08:1.
comparative example 1 is basically the same as example 1 except that: does not carry out needling treatment
S1, dissolving nano cesium tungsten bronze powder in deionized water, performing ultrasonic dispersion in an ultrasonic disperser to obtain nano cesium tungsten bronze powder suspension with the concentration of 5g/L, immersing polyester cotton embryo cloth in the nano cesium tungsten bronze powder suspension for 20min, performing padding treatment by a padding machine, and repeating the padding process for 6 times to obtain the polyester cotton embryo cloth with near infrared shielding performance;
wherein the padding pressure of the padding treatment is 0.3MPa, and the padding speed is 20rpm;
s2, dissolving TPU in N, N-dimethylformamide DMF to obtain TPU solution with the concentration of 25wt%, coating the TPU solution on one side of polyester-cotton embryo cloth with near infrared shielding performance, contacting one side of the polyester-cotton embryo cloth with near infrared shielding performance, which is not coated with the TPU solution, with water surface under tension, solidifying in a solidifying bath at the running speed of 10m/min, removing tension, and thermally curing at 150 ℃ for 4min to obtain the fabric with waterproof and near infrared shielding performance;
wherein the air pressure of the extrusion groove is 0.4MPa, and the distance from the lowest end of the extrusion groove to the polyester cotton embryo cloth with near infrared shielding performance is 12cm; the distance between the lowest end of the scraper and the polyester cotton embryo cloth with near infrared shielding performance is 0.35mm; the length ratio of the polyester cotton embryo cloth with near infrared shielding performance to the unloaded tension after the tension is applied is 1.06:1.
comparative example 2 is basically the same as example 1 except that: no-load nano cesium tungsten bronze powder
S1, carrying out needling treatment on polyester-cotton embryo cloth, washing for 6 times by a washing tank, and drying at 70 ℃ for 5 hours to obtain pretreated polyester-cotton embryo cloth;
the needle head adopted in the needling treatment is a mould pressing needle head of a small ball head end, the chamfer angle of the small ball head is 45 degrees, the length of the needle head is 20mm, the cross section of the needle head is star-shaped, 4 opposite grooves are formed in the side face of the needle head, the needling mode is unidirectional needling, and the density of needling plates is 6000 pieces/m.
S2, immersing the pretreated polyester-cotton embryo cloth in deionized water for 20min, padding by a padding machine, and repeating the padding process for 6 times to obtain the polyester-cotton embryo cloth containing moisture;
wherein the padding pressure of the padding treatment is 0.3MPa, and the padding speed is 20rpm;
s3, dissolving TPU in N, N-dimethylformamide DMF to obtain TPU solution with the concentration of 25wt%, coating the TPU solution on one side of polyester-cotton embryo cloth containing moisture, contacting one side of the polyester-cotton embryo cloth containing moisture, which is not coated with the TPU solution, with water surface under the tension condition, solidifying in a solidifying bath at the running speed of 10m/min, removing the tension, and thermally curing at 150 ℃ for 4min to obtain the fabric with waterproof performance;
wherein the air pressure of the extrusion groove is 0.4MPa, and the distance from the lowest end of the extrusion groove to the polyester cotton embryo cloth containing moisture is 12cm; the distance between the lowest end of the scraper and the polyester cotton embryo cloth containing moisture is 0.35mm; the length ratio of the polyester cotton embryo cloth containing moisture to the unloaded tension after the tension is applied is 1.06:1.
comparative example 3 is basically the same as example 1 except that: non-coating TPU solution
S1, carrying out needling treatment on polyester-cotton embryo cloth, washing for 6 times by a washing tank, and drying at 70 ℃ for 5 hours to obtain pretreated polyester-cotton embryo cloth;
the needle head adopted in the needling treatment is a mould pressing needle head of a small ball head end, the chamfer angle of the small ball head is 45 degrees, the length of the needle head is 20mm, the cross section of the needle head is star-shaped, 4 opposite grooves are formed in the side face of the needle head, the needling mode is unidirectional needling, and the density of needling plates is 6000 pieces/m.
S2, dissolving nano cesium tungsten bronze powder in deionized water, performing ultrasonic dispersion in an ultrasonic disperser to obtain nano cesium tungsten bronze powder suspension with the concentration of 5g/L, immersing the pretreated polyester cotton embryo cloth in the nano cesium tungsten bronze powder suspension for 20min, performing padding treatment by a padding machine, and repeating the padding process for 6 times to obtain the polyester cotton embryo cloth with near infrared shielding performance;
wherein the padding pressure of the padding treatment is 0.3MPa, and the padding speed is 20rpm;
s3, under the tension condition, one side of the polyester cotton embryo cloth with near infrared shielding performance is contacted with the water surface, solidification is carried out in a solidification bath at the running speed of 10m/min, the tension is removed, and the fabric with near infrared shielding performance is obtained after thermal curing for 4min at 150 ℃;
wherein the air pressure of the extrusion groove is 0.4MPa, and the distance from the lowest end of the extrusion groove to the polyester cotton embryo cloth with near infrared shielding performance is 12cm; the distance between the lowest end of the scraper and the polyester cotton embryo cloth with near infrared shielding performance is 0.35mm; the length ratio of the polyester cotton embryo cloth with near infrared shielding performance to the unloaded tension after the tension is applied is 1.06:1.
comparative example 4 is basically the same as example 1 except that: without pre-stressing
S1, carrying out needling treatment on polyester-cotton embryo cloth, washing for 6 times by a washing tank, and drying at 70 ℃ for 5 hours to obtain pretreated polyester-cotton embryo cloth;
the needle head adopted in the needling treatment is a mould pressing needle head of a small ball head end, the chamfer angle of the small ball head is 45 degrees, the length of the needle head is 20mm, the cross section of the needle head is star-shaped, 4 opposite grooves are formed in the side face of the needle head, the needling mode is unidirectional needling, and the density of needling plates is 6000 pieces/m.
S2, dissolving nano cesium tungsten bronze powder in deionized water, performing ultrasonic dispersion in an ultrasonic disperser to obtain nano cesium tungsten bronze powder suspension with the concentration of 5g/L, immersing the pretreated polyester cotton embryo cloth in the nano cesium tungsten bronze powder suspension for 20min, performing padding treatment by a padding machine, and repeating the padding process for 6 times to obtain the polyester cotton embryo cloth with near infrared shielding performance;
wherein the padding pressure of the padding treatment is 0.3MPa, and the padding speed is 20rpm;
s3, dissolving TPU in N, N-dimethylformamide DMF to obtain TPU solution with the concentration of 25wt%, coating the TPU solution on one side of polyester-cotton embryo cloth with near infrared shielding performance, contacting one side of the polyester-cotton embryo cloth with near infrared shielding performance, which is not coated with the TPU solution, with water surface, solidifying in a solidifying bath at the running speed of 10m/min, and then thermally curing at 150 ℃ for 4min to obtain the fabric with waterproof and near infrared shielding performance;
wherein the air pressure of the extrusion groove is 0.4MPa, and the distance from the lowest end of the extrusion groove to the polyester cotton embryo cloth with near infrared shielding performance is 12cm; the distance between the lowest end of the scraper and the polyester cotton embryo cloth with near infrared shielding performance is 0.35mm; the length ratio of the polyester cotton embryo cloth with near infrared shielding performance to the unloaded tension after the tension is applied is 1.06:1.
test case
The fabrics prepared in examples 1 to 15 and comparative examples 1 to 4 were tested for near infrared shielding property, water resistance, air permeability, and the following criteria were used as specific basis:
near infrared shielding properties: testing and analyzing the standard and the method by referring to GB/T37969-2019 near infrared spectrum qualitative analysis general near infrared absorption;
waterproof performance: reference to the relevant standard test and analysis described in Water contact Angle DB 44/T1872-2016 Water;
air permeability: reference to the standard test and analysis described in GB/T5453-1997 GB/T5453-1997 determination of textile fabric breathability;
the infrared transmittance, water contact angle and air permeability results of the examples and comparative examples are shown in table 1:
the test results of examples 3-5 and comparative example 2 are shown in FIG. 4:
TABLE 1
| Sample preparation | Transmittance (%) | Water contact angle (°) | Air permeability (mm/s) |
| Example 1 | 23 | 103 | 410 |
| Example 2 | 27 | 103 | 418 |
| Example 3 | 22 | 103 | 410 |
| Example 4 | 30 | 103 | 414 |
| Example 5 | 15 | 103 | 408 |
| Example 6 | 27 | 103 | 414 |
| Example 7 | 21 | 103 | 407 |
| Example 8 | 26 | 103 | 421 |
| Example 9 | 20 | 103 | 402 |
| Implementation of the embodimentsExample 10 | 23 | 99 | 457 |
| Example 11 | 23 | 107 | 380 |
| Example 12 | 23 | 96 | 464 |
| Example 13 | 23 | 110 | 370 |
| Example 14 | 23 | 104 | 368 |
| Example 15 | 23 | 110 | 470 |
| Comparative example 1 | 70 | 103 | 390 |
| Comparative example 2 | 81 | 103 | 410 |
| Comparative example 3 | 40 | 70 | 510 |
| Comparative example 4 | 23 | 110 | 130 |
From table 1 and fig. 4, it can be seen that the density of the needled board, the concentration of the nano cesium tungsten bronze powder suspension, the impregnation time and the impregnation times can adjust the load of the nano cesium tungsten bronze powder, and good near infrared shielding performance is achieved, and the concentration of the TPU solution, the distance of the doctor blade and the pre-tension force can enable the fabric to have excellent waterproof and breathable properties.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present invention will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.
Claims (10)
1. A method for preparing a fabric with waterproof and near infrared shielding properties is characterized by comprising the following steps,
s1, carrying out needling treatment on polyester cotton embryo cloth, and washing and drying to obtain pretreated polyester cotton embryo cloth;
s2, immersing the pre-treated polyester cotton embryo cloth in cesium tungsten bronze suspension, and padding to obtain the polyester cotton embryo cloth with near infrared shielding performance;
and S3, coating TPU solution on one side of the polyester cotton embryo cloth with the near infrared shielding performance in S2, solidifying under tension, and then thermally curing to obtain the fabric with the waterproof and near infrared shielding performance.
2. The method for producing a fabric having waterproof and near infrared shielding properties according to claim 1, wherein in S1, the needle-punching process is performed by using a needle having a small ball end with a chamfer angle of 30 ° -60 °, a needle length of 15mm-25mm, a cross-sectional shape of the needle having a star shape, 3-6 opposing grooves provided on a side surface, a needle-punching pattern of unidirectional needle punching, and a needle-punching density of 4500 pieces/m-7500 pieces/m.
3. The method for preparing a fabric having waterproof and near infrared shielding properties according to claim 1, wherein in S1, the drying temperature is 60 ℃ to 80 ℃ and the drying time is 4h to 6h.
4. The method for producing a fabric having waterproof and near infrared shielding properties according to claim 1, wherein in S2, the cesium tungsten bronze suspension is a mixed solution of nano cesium tungsten bronze powder and water; the particle size of the nano cesium tungsten bronze powder is 30nm-50nm; the cesium tungsten bronze suspension has a concentration of 3g/L to 8g/L.
5. The method for preparing a fabric having waterproof and near infrared shielding properties according to claim 1, wherein in S2, the immersion time is 15min to 30min; the padding pressure of the padding treatment is 0.2MPa-0.4MPa, the padding speed is 20rpm-22rpm, and the padding times are 3-10 times.
6. The method for producing a fabric having waterproof and near infrared shielding properties according to claim 1, wherein in S3, the TPU solution is a mixed solution of TPU and N, N-dimethylformamide; the concentration of the TPU solution is 20wt% to 30wt%.
7. The method for preparing a fabric having waterproof and near infrared shielding properties according to claim 1, wherein in S3, the coating of the TPU solution is controlled by an air pressure device, uniformly coated on the polyester-cotton blanket having near infrared shielding properties under the combined action of gravity and air pressure of an extrusion tank, the air pressure of the extrusion tank is 0.3MPa to 0.4MPa, and the distance from the lowermost end of the extrusion tank to the polyester-cotton blanket having near infrared shielding properties is 10cm to 15cm; the thickness of the TPU solution after coating is 0.3mm-0.4mm.
8. The method for producing a fabric having waterproof and near infrared shielding properties according to claim 1, wherein in S3, the ratio of the length of the polyester cotton embryo cloth having near infrared shielding properties after tension is applied to the non-loaded tension is 1.05 to 1.08:1.
9. the method for producing a fabric having waterproof and near infrared shielding properties according to claim 1, wherein in S3, the heat curing temperature is 140 ℃ to 160 ℃ and the heat curing time is 3min to 5min.
10. A fabric having water-repellent and near infrared shielding properties prepared by the method of any one of claims 1 to 9.
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