CN111041812A - Preparation method of self-cleaning fiber - Google Patents
Preparation method of self-cleaning fiber Download PDFInfo
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- CN111041812A CN111041812A CN201911379046.8A CN201911379046A CN111041812A CN 111041812 A CN111041812 A CN 111041812A CN 201911379046 A CN201911379046 A CN 201911379046A CN 111041812 A CN111041812 A CN 111041812A
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- 239000000835 fiber Substances 0.000 title claims abstract description 68
- 238000004140 cleaning Methods 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000002086 nanomaterial Substances 0.000 claims abstract description 28
- 239000011248 coating agent Substances 0.000 claims abstract description 21
- 238000000576 coating method Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 18
- 230000001699 photocatalysis Effects 0.000 claims abstract description 18
- 238000000231 atomic layer deposition Methods 0.000 claims abstract description 14
- 239000013078 crystal Substances 0.000 claims abstract description 9
- 238000000016 photochemical curing Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 5
- 238000007146 photocatalysis Methods 0.000 claims abstract description 4
- 238000000151 deposition Methods 0.000 claims description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 230000008021 deposition Effects 0.000 claims description 25
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 18
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 18
- 238000005406 washing Methods 0.000 claims description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 239000002131 composite material Substances 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 11
- 239000008367 deionised water Substances 0.000 claims description 10
- 229910021641 deionized water Inorganic materials 0.000 claims description 10
- QUAMTGJKVDWJEQ-UHFFFAOYSA-N octabenzone Chemical group OC1=CC(OCCCCCCCC)=CC=C1C(=O)C1=CC=CC=C1 QUAMTGJKVDWJEQ-UHFFFAOYSA-N 0.000 claims description 10
- 229920000058 polyacrylate Polymers 0.000 claims description 10
- 239000000853 adhesive Substances 0.000 claims description 9
- 230000001070 adhesive effect Effects 0.000 claims description 9
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- -1 polyethylene terephthalate Polymers 0.000 claims description 8
- 230000003712 anti-aging effect Effects 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 239000003431 cross linking reagent Substances 0.000 claims description 7
- 239000002270 dispersing agent Substances 0.000 claims description 7
- 239000002562 thickening agent Substances 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 6
- 229910001868 water Inorganic materials 0.000 claims description 6
- RLWTYSCBQDVDRW-UHFFFAOYSA-N 2,2-bis(propanoyloxymethyl)butyl propanoate Chemical group CCC(=O)OCC(CC)(COC(=O)CC)COC(=O)CC RLWTYSCBQDVDRW-UHFFFAOYSA-N 0.000 claims description 5
- KWOLFJPFCHCOCG-UHFFFAOYSA-N Acetophenone Chemical compound CC(=O)C1=CC=CC=C1 KWOLFJPFCHCOCG-UHFFFAOYSA-N 0.000 claims description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 5
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical group [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-O ammonium group Chemical group [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 5
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 claims description 5
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 230000007935 neutral effect Effects 0.000 claims description 5
- 238000000643 oven drying Methods 0.000 claims description 5
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 claims description 5
- 238000002791 soaking Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000009210 therapy by ultrasound Methods 0.000 claims description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 4
- HQWPLXHWEZZGKY-UHFFFAOYSA-N diethylzinc Chemical compound CC[Zn]CC HQWPLXHWEZZGKY-UHFFFAOYSA-N 0.000 claims description 4
- 239000006185 dispersion Substances 0.000 claims description 4
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 4
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 4
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 4
- 239000011787 zinc oxide Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 claims description 3
- VXAUWWUXCIMFIM-UHFFFAOYSA-M aluminum;oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Al+3] VXAUWWUXCIMFIM-UHFFFAOYSA-M 0.000 claims description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
- 125000005594 diketone group Chemical group 0.000 claims description 2
- 230000001678 irradiating effect Effects 0.000 claims description 2
- 239000005543 nano-size silicon particle Substances 0.000 claims description 2
- 235000012239 silicon dioxide Nutrition 0.000 claims description 2
- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 claims description 2
- 239000011230 binding agent Substances 0.000 claims 2
- 239000004744 fabric Substances 0.000 description 5
- 230000003075 superhydrophobic effect Effects 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229920003123 carboxymethyl cellulose sodium Polymers 0.000 description 1
- 229940063834 carboxymethylcellulose sodium Drugs 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- ZHPNWZCWUUJAJC-UHFFFAOYSA-N fluorosilicon Chemical compound [Si]F ZHPNWZCWUUJAJC-UHFFFAOYSA-N 0.000 description 1
- 239000002917 insecticide Substances 0.000 description 1
- 235000001968 nicotinic acid Nutrition 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
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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
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/04—Physical treatment combined with treatment with chemical compounds or elements
- D06M10/08—Organic compounds
- D06M10/10—Macromolecular compounds
-
- 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
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/04—Physical treatment combined with treatment with chemical compounds or elements
- D06M10/06—Inorganic compounds or elements
-
- 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
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/04—Physical treatment combined with treatment with chemical compounds or elements
- D06M10/08—Organic compounds
-
- 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
- D06M11/44—Oxides or hydroxides of elements of Groups 2 or 12 of the Periodic Table; Zincates; Cadmates
-
- 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
- D06M11/46—Oxides or hydroxides of elements of Groups 4 or 14 of the Periodic Table; Titanates; Zirconates; Stannates; Plumbates
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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
- D06M2101/16—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
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The invention provides a self-cleaning fiber and a preparation method thereof, wherein the fiber takes PET fiber as a base material, inorganic nano material is deposited on the surface of the fiber through an atomic layer deposition technology, the inorganic nano material is combined with a photocatalysis nano material through crystal face matching, and further, the nano material is firmly loaded on the surface of the fiber through photocuring. The method mainly adopts a method of forming a photocatalytic surface on the fiber, mainly solves the problem of firmness of the coating and the fiber, adopts the atomic layer deposition and crystal face matching technology, and simultaneously adopts the photocuring fixing technology to realize the tight combination of the photocatalytic nano material and the fiber.
Description
Technical Field
The invention relates to the field of preparation of functional fibers, and particularly provides a preparation method of a self-cleaning fiber, namely, a nano material with photocatalytic performance is coated on the surface of the fiber.
Background
The fiber with the self-cleaning function is used in the textile field, can relieve the environmental and energy problems caused by washing, can effectively shield and clear various environmental pollutants such as bacteria, viruses, insecticides, stains and the like, and avoids the pollutants from damaging human bodies through skin or respiratory tracts, so the fiber fabric with the self-cleaning function can be widely applied to the fields of daily clothing, biochemical protective clothing, medical care, environment, farms, military and the like.
The self-cleaning functional fiber or fabric has the following common points: a surface with a self-cleaning function. Approaches to obtaining self-cleaning function mainly include two categories: firstly, forming a super-hydrophobic surface, and secondly, forming a photocatalytic surface. The preparation method of the super-hydrophobic surface mainly comprises the following steps: the method comprises the steps of constructing a material surface structure based on a bionics principle, modifying or coating the surface by using substances containing fluorine and silicon groups with low surface energy, and performing super-hydrophobic treatment on fibers and fabrics by using a nanotechnology method. The preparation method of the photocatalytic surface mainly comprises the following steps: using nano-materials having a photocatalytic effect, e.g. nano-titanium dioxide (TiO)2) The fabric is finished to obtain a photocatalytic surface. However, the current state of research on self-cleaning fibers and fabrics shows that there are many key issues to be further developed: for example, the preparation method of the super-hydrophobic self-cleaning surface mostly needs complex design, fine control technology or expensive fluorine-silicon compound; inorganic TiO existing in photocatalysis self-cleaning surface technology2The bonding fastness of the particles and the fiber is not enough, the particles are easy to fall off, the hand feeling of the fiber is influenced, and the particles are difficult to be uniformly dispersed on the surface of the fiber. Therefore, new ideas are required to develop a self-cleaning method suitable for fiber materials, which is high in performance and low in cost.
The method mainly adopts a method of forming a photocatalytic surface on the fiber, mainly solves the problem of firmness of the coating and the fiber, adopts the atomic layer deposition and crystal face matching technology, and simultaneously adopts the photocuring fixing technology to realize the tight combination of the photocatalytic nano material and the fiber.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a preparation method of self-cleaning fiber.
The purpose of the invention is realized by the following scheme: a preparation method of self-cleaning fiber, which takes PET (polyethylene terephthalate) fiber as a substrate, deposits inorganic nano material on the surface of the fiber through an atomic layer deposition technology, realizes combination with photocatalysis nano material through crystal face matching, and further enables the nano material to be firmly loaded on the surface of the fiber through photocuring, comprises the following steps:
(1) soaking PET in concentrated sodium hydroxide (such as 20-40 wt.%), stirring for 24 hr, washing, oven drying, and placing in a container with concentration of K2Cr2O7：H2SO4：H2O = 1: 20: 2 (w/v/w) chromic acid solution, performing ultrasonic treatment at 60 ℃ for 15min, washing with deionized water until the washing solution is neutral, and drying at room temperature;
(2) the PET fiber is obtained by depositing a layer of nano oxide by an atomic layer deposition technology, and the process comprises the following steps: vacuumizing the deposition chamber to 10-16Pa, heating the substrate to 100-150 ℃, introducing a metal gas source into the deposition chamber, cleaning the deposition chamber by using high-purity nitrogen and introducing water vapor into the deposition chamber, wherein the exposure time of the metal gas source, the high-purity nitrogen and the water vapor in the deposition chamber is 0.1s, 3s, 0.1s and 3s in sequence;
(3) taking the following coating raw materials, namely 10-30% of nano material dispersion liquid, 1-3% of adhesive, 5-10% of dispersing agent, 0.1-1% of anti-aging agent, 0.1-1% of cross-linking agent, 1-5% of thickening agent, 0.5-2% of photoinitiator and the balance of deionized water according to mass percentage, mixing and preparing the raw materials for later use;
(4) uniformly coating the raw materials on the surface of the fiber, compacting the coating film and the fiber by a compacting device, repeatedly coating and compacting to obtain the composite film, then drying the composite film at a low temperature, and irradiating the dried composite film for 3-5 minutes by using an ultraviolet light reaction instrument.
The metal gas source is one of diethyl zinc, trimethyl aluminum and titanium tetrachloride.
The nano material dispersion liquid is one of nano aluminum dioxide, nano silicon dioxide, nano calcium carbonate, nano zinc oxide and nano titanium dioxide.
The adhesive is polyacrylate water-based adhesive, the dispersing agent is ammonium polyacrylate, the anti-aging agent is 2-hydroxy-4-n-octoxy benzophenone, the crosslinking agent is trimethylolpropane tripropionate, the thickening agent is sodium carboxymethyl cellulose, and the photoinitiator is one of tolidine, alkyl ketone, diketone or acetyl benzene.
The drying temperature is 50-100 ℃, and the drying time is 10-60 minutes.
The method mainly adopts a method of forming a photocatalytic surface on the fiber, mainly solves the problem of firmness of the coating and the fiber, adopts the atomic layer deposition and crystal face matching technology, and simultaneously adopts the photocuring fixing technology to realize the tight combination of the photocatalytic nano material and the fiber. The fiber takes PET (polyethylene terephthalate) as a base material, inorganic nano materials are deposited on the surface of the fiber through an atomic layer deposition technology, the inorganic nano materials are combined with photocatalytic nano materials through crystal face matching, and further, the nano materials are firmly loaded on the surface of the fiber through photocuring.
The invention adopts the atomic layer deposition and crystal face matching technology and simultaneously adopts the photocuring fixing technology to realize the tight combination of the photocatalytic nano material and the fiber. The fiber can be used for preparing products such as protective masks, and can effectively block foreign substances such as dust, bacteria, and the like, and play a role in efficient filtration. The preparation method has the advantages of simple preparation process, easy control of reaction, good stability, industrialization and wide popularization prospect.
Detailed Description
The technical solution of the present invention is further described below by specific examples. The following examples are further illustrative of the present invention and do not limit the scope of the present invention.
Example 1
A self-cleaning fiber takes polyethylene terephthalate (PET) fiber as a base material, inorganic nano materials are deposited on the surface of the fiber through an atomic layer deposition technology, and are combined with photocatalytic nano materials through crystal face matching, and further, the nano materials are firmly loaded on the surface of the fiber through photocuring, and the self-cleaning fiber is prepared through the following steps:
(1) soaking PET fiber in concentrated sodium hydroxide, stirring for 24 hr, washing, oven drying, and placing in a container with concentration of K2Cr2O7：H2SO4：H2O = 1: 20: 2 (w/v/w) chromic acid solution, performing ultrasonic treatment at 60 ℃ for 15min, washing with deionized water until the washing solution is neutral, and drying at room temperature;
(2) depositing a layer of nano oxide on the PET fiber obtained in the step (1) by an atomic layer deposition technology, wherein the process comprises the following steps: vacuumizing a deposition chamber to 10Pa, heating a substrate to 100 ℃, introducing a metal gas source diethyl zinc into the deposition chamber, cleaning the deposition chamber by using high-purity nitrogen and introducing water vapor into the deposition chamber, wherein the exposure time of the metal gas source, the high-purity nitrogen and the water vapor in the deposition chamber is 0.1s, 3s, 0.1s and 3s in sequence;
(3) taking 10% of nano zinc oxide, 1% of polyacrylate aqueous adhesive, 5% of dispersant ammonium polyacrylate, 0.1% of anti-aging agent 2-hydroxy-4-n-octoxy benzophenone, 0.1% of cross-linking agent trimethylolpropane tripropionate, 1% of thickener carboxymethylcellulose sodium, 0.5% of photoinitiator toluene di-ketone and the balance of deionized water, mixing and preparing into a raw material for later use;
(4) the raw materials are evenly coated on the surface of the fiber, the coating film and the fiber are compacted through a compacting device, the coating and compacting are repeated to obtain the composite film, then the composite film is dried at the low temperature of 50 ℃ for 30 minutes, and the dried composite film is irradiated for 3 minutes by an ultraviolet light reaction instrument.
The binding force of the coating is 7.6 MPa.
Example 2
A self-cleaning fiber, similar to example 1, prepared by the following steps:
(1) soaking PET fiber in concentrated sodium hydroxide, stirring for 24 hr, washing, oven drying, and placing in a container with concentration of K2Cr2O7：H2SO4：H2O = 1: 20: 2 (w/v/w) chromic acid solution, performing ultrasonic treatment at 60 ℃ for 15min, washing with deionized water until the washing solution is neutral, and drying at room temperature;
(2) depositing a layer of nano oxide on the PET fiber obtained in the step (1) by an atomic layer deposition technology, wherein the process comprises the following steps: vacuumizing a deposition chamber to 15Pa, heating a substrate to 120 ℃, introducing metal gas source diethyl zinc into the deposition chamber, cleaning the deposition chamber by using high-purity nitrogen gas and introducing water vapor into the deposition chamber, wherein the exposure time of the metal gas source, the high-purity nitrogen gas and the water vapor in the deposition chamber is 0.1s, 3s, 0.1s and 3s in sequence;
(3) taking 10-30% of nano zinc oxide, 3% of an adhesive polyacrylate aqueous adhesive, 10% of a dispersant ammonium polyacrylate, 1% of an anti-aging agent 2-hydroxy-4-n-octoxy benzophenone, 1% of a cross-linking agent trimethylolpropane tripropionate, 5% of a thickening agent, 5% of sodium carboxymethylcellulose, 5% of a photoinitiator alkyl ketone and the balance of deionized water according to mass percentage, mixing and preparing into a raw material for later use;
(4) the raw materials are evenly coated on the surface of the fiber, the coating film and the fiber are compacted through a compacting device, the coating and the compaction are repeated to obtain the composite film, then the composite film is dried at the low temperature of 70 ℃ for 60 minutes, and the dried composite film is irradiated for 5 minutes by an ultraviolet light reaction instrument.
The binding force of the coating is 9.1 MPa.
Example 3
A self-cleaning fiber, similar to example 1, prepared by the following steps:
(1) soaking PET fiber in concentrated sodium hydroxide, stirring for 24 hr, washing, oven drying, and placing in a container with concentration of K2Cr2O7：H2SO4：H2O = 1: 20: 2 (w/v/w) chromic acid solution, performing ultrasonic treatment at 60 ℃ for 15min, washing with deionized water until the washing solution is neutral, and drying at room temperature;
(2) depositing a layer of nano oxide on the PET fiber obtained in the step (1) by an atomic layer deposition technology, wherein the process comprises the following steps: vacuumizing a deposition chamber to 15Pa, heating a substrate to 150 ℃, introducing a metal gas source titanium tetrachloride into the deposition chamber, cleaning the deposition chamber by using high-purity nitrogen, and introducing water vapor into the deposition chamber, wherein the exposure time of the metal gas source, the high-purity nitrogen and the water vapor in the deposition chamber is 0.1s, 3s, 0.1s and 3s in sequence;
(3) taking 30% of nano titanium dioxide, 2% of an adhesive polyacrylate aqueous adhesive, 8% of a dispersant ammonium polyacrylate, 0.5% of an anti-aging agent 2-hydroxy-4-n-octoxy benzophenone, 0.5% of a cross-linking agent trimethylolpropane tripropionate, 3% of a thickener sodium carboxymethyl cellulose, 5% of a photoinitiator acetophenone, and the balance deionized water according to mass percentage, mixing and preparing into a raw material for later use;
(4) the raw materials are evenly coated on the surface of the fiber, the coating film and the fiber are compacted through a compacting device, the coating and the compaction are repeated to obtain the composite film, then the composite film is dried at the low temperature of 100 ℃ for 60 minutes, and the dried composite film is irradiated for 5 minutes by an ultraviolet light reaction instrument.
The binding force of the coating is 7.9 MPa.
Claims (5)
1. A preparation method of self-cleaning fiber is characterized in that polyethylene terephthalate (PET) fiber is used as a base material, inorganic nano material is deposited on the surface of the fiber through an atomic layer deposition technology, the inorganic nano material is combined with a photocatalysis nano material through crystal face matching, and further, the nano material is firmly loaded on the surface of the fiber through photocuring, and the preparation method comprises the following steps:
(1) soaking PET in concentrated sodium hydroxide, stirring for 24 hr, washing, oven drying, and placing in a container with concentration of K2Cr2O7：H2SO4：H2O = 1: 20: 2 (w/v/w) chromic acid solution, performing ultrasonic treatment at 60 ℃ for 15min, washing with deionized water until the washing solution is neutral, and drying at room temperature;
(2) depositing a layer of nano oxide on the PET fiber obtained in the step (1) by an atomic layer deposition technology, wherein the process comprises the following steps: vacuumizing the deposition chamber to 10-16Pa, heating the substrate to 100-150 ℃, introducing a metal gas source into the deposition chamber, cleaning the deposition chamber by using high-purity nitrogen and introducing water vapor into the deposition chamber, wherein the exposure time of the metal gas source, the high-purity nitrogen and the water vapor in the deposition chamber is 0.1s, 3s, 0.1s and 3s in sequence;
(3) taking the following coating raw materials, namely 10-30% of nano material dispersion liquid, 1-3% of adhesive, 5-10% of dispersing agent, 0.1-1% of anti-aging agent, 0.1-1% of cross-linking agent, 1-5% of thickening agent, 0.5-5% of photoinitiator and the balance of deionized water according to mass percentage, mixing and preparing the raw materials for later use;
(4) uniformly coating the raw materials on the surface of the fiber, compacting the coating film and the fiber by a compacting device, repeatedly coating and compacting to obtain the composite film, then drying the composite film at a low temperature, and irradiating the dried composite film for 3-5 minutes by using an ultraviolet light reaction instrument.
2. The method of claim 1, wherein the metal source is one of diethyl zinc, trimethyl aluminum, and titanium tetrachloride.
3. The method for preparing self-cleaning fiber according to claim 1, wherein the nano material dispersion is one of nano aluminum dioxide, nano silicon dioxide, nano calcium carbonate, nano zinc oxide and nano titanium dioxide.
4. The method of claim 1, wherein the binder is polyacrylate aqueous binder, the dispersant is ammonium polyacrylate, the anti-aging agent is 2-hydroxy-4-n-octoxybenzophenone, the cross-linking agent is trimethylolpropane tripropionate, the thickening agent is sodium carboxymethylcellulose, and the photoinitiator is one of tolidine, alkyl ketone, diketone or acetophenone.
5. The method for preparing self-cleaning fiber according to claim 1, wherein the drying temperature in step (4) is 50-100 ℃ and the drying time is 10-60 minutes.
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