CN114737396B - Super-amphiphobic infrared stealth fabric and preparation method thereof - Google Patents

Super-amphiphobic infrared stealth fabric and preparation method thereof Download PDF

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CN114737396B
CN114737396B CN202210532850.0A CN202210532850A CN114737396B CN 114737396 B CN114737396 B CN 114737396B CN 202210532850 A CN202210532850 A CN 202210532850A CN 114737396 B CN114737396 B CN 114737396B
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fabric
super
amphiphobic
infrared stealth
nano
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CN114737396A (en
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符思达
徐之光
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Jiaxing University
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Jiaxing University
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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
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • 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
    • D06M11/47—Oxides or hydroxides of elements of Groups 5 or 15 of the Periodic Table; Vanadates; Niobates; Tantalates; Arsenates; Antimonates; Bismuthates
    • 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
    • D06M11/77—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 silicon or compounds thereof
    • D06M11/79—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 silicon or compounds thereof with silicon dioxide, silicic acids or their salts
    • 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
    • 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
    • D06M13/50—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with organometallic compounds; with organic compounds containing boron, silicon, selenium or tellurium atoms
    • D06M13/51—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond
    • D06M13/513—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond with at least one carbon-silicon bond
    • 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
    • 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
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    • 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
    • D06M2101/10—Animal fibres
    • D06M2101/12—Keratin fibres or silk
    • D—TEXTILES; PAPER
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    • 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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    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/10—Repellency against liquids
    • D06M2200/11—Oleophobic properties
    • 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
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20—Controlling water pollution; Waste water treatment
    • Y02A20/204—Keeping clear the surface of open water from oil spills

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Abstract

The invention discloses a preparation method of super-amphiphobic infrared stealth fabric, which is characterized by comprising the following steps: (1) Preparing a dopamine aqueous solution, regulating the pH value to 7.5-9, immersing the fabric in the dopamine aqueous solution for 8-24 hours, and then cleaning and airing; (2) preparing a functional coating solution: hydrotalcite, hollow silicon dioxide, polyurethane, nano metal or nano metal oxide and perfluoro organosilane are added into an organic solvent for dispersion; (3) Immersing the fabric cleaned and dried in the step (1) into the functional coating solution prepared in the step (2), and heating for 5-30 minutes at 50-100 ℃ to obtain the required super-amphiphobic infrared stealth fabric. The invention also discloses the super-amphiphobic infrared stealth fabric prepared by the preparation method. Compared with the prior art, the super-amphiphobic infrared stealth fabric has both super-amphiphobic property and infrared stealth property.

Description

Super-amphiphobic infrared stealth fabric and preparation method thereof
Technical Field
The invention relates to the technical field of fabric surface modification, in particular to a super-amphiphobic infrared stealth fabric and a preparation method thereof.
Background
Conventional fabrics are generally oil-proof and waterproof, and are easily polluted by water-soluble stains such as fruit juice and tea soup, and oil-based stains such as vegetable oil and diesel oil. It is therefore highly necessary to subject fabrics to super-amphiphobic (super-hydrophobic and super-oleophobic) treatments, particularly for military garments, which are often used in the harsh environment of the field. For example, the patent application No. 202110159053.8 (publication No. CN 112813683A) discloses a super-amphiphobic fabric and a preparation method thereof, wherein a coarse structure is directly constructed on the surface of the fabric through one-step reaction, the surface energy of the fabric is reduced, and the super-amphiphobic fabric is formed, so that the super-amphiphobic fabric has excellent ultraviolet resistance and pollution resistance, can increase self buoyancy in water and pump oil, has good bearing capacity, and has wide application prospect in the fields of clothing, packaging, umbrella manufacturing and the like.
In recent years, the technology of night electronic detection has been rapidly developed, and infrared stealth treatment of military clothing is very urgent. Some firearm projectiles often incorporate infrared imagers and infrared signals from the soldier's body can be found very easily by these devices. The infrared stealth technology at present mainly plays a role by reducing the infrared emission frequency and/or using a thermal insulation coating, so that the infrared radiation difference between a target and the background is as small as possible.
But fabrics with super amphiphobic properties and infrared stealth properties are rarely reported.
Disclosure of Invention
The first technical problem to be solved by the invention is to provide a preparation method of the super-amphiphobic infrared stealth fabric with both super-amphiphobic property and infrared stealth property aiming at the current state of the art.
The second technical problem to be solved by the invention is to provide the super-amphiphobic infrared stealth fabric prepared by the preparation method.
The technical scheme adopted by the invention for solving the first technical problem is as follows: the preparation method of the super-amphiphobic infrared stealth fabric is characterized by comprising the following steps of:
(1) Preparing a dopamine aqueous solution, regulating the pH value to 7.5-9, immersing the fabric in the dopamine aqueous solution for 8-24 hours, and then cleaning and airing;
(2) Preparing a functional coating solution: hydrotalcite, hollow silicon dioxide, polyurethane, nano metal or nano metal oxide and perfluoro organosilane are added into an organic solvent for dispersion;
(3) Immersing the fabric cleaned and dried in the step (1) into the functional coating solution prepared in the step (2), and heating for 5-30 minutes at 50-100 ℃ to obtain the required super-amphiphobic infrared stealth fabric.
Preferably, in the step (1), the concentration of the aqueous solution of dopamine is 1 to 3wt%.
Preferably, in the step (1), the fabric is at least one of cotton cloth, polyester cloth and wool cloth.
Preferably, in the step (2), the addition amount of hydrotalcite is 1-3 wt%, the addition amount of hollow silicon dioxide is 1-5 wt%, the addition amount of polyurethane is 1-5 wt%, the addition amount of nano metal or nano metal oxide is 1-5 wt%, and the addition amount of perfluoro organosilane is 1-3 wt%.
Preferably, in step (2), the organic solvent is tetrahydrofuran.
Preferably, in the step (2), the metal is nano silver powder.
Preferably, in the step (2), the metal oxide is at least one of nano tin antimony oxide powder and nano bismuth oxide powder.
Preferably, in step (2), the perfluoro organosilane is perfluoro (seventeen) fluoro decyl triethoxysilane.
Preferably, in step (3), the fabric is heated after being immersed in the functional coating solution for 1 to 5 minutes.
The invention solves the second technical problem by adopting the technical proposal that: the super-amphiphobic infrared stealth fabric prepared by the preparation method.
Compared with the prior art, the invention has the advantages that:
(1) The invention provides a fabric surface treatment method with super amphiphobic and infrared stealth functions, which adopts a two-step dip coating process, wherein polydopamine is formed on the surface of the fabric through self-polymerization of dopamine, and then the fabric is treated through a functional coating solution containing hydrotalcite, hollow silicon dioxide, polyurethane, nano metal or nano metal oxide and perfluoro organosilane, so that the treated fabric keeps the super amphiphobic characteristic, has high firmness, simultaneously shows excellent infrared stealth property and has good application prospect;
among them, polydopamine is reported to have general adhesion property, and can form chemical bond with base material through catechol, amino group and other groups, and can form intermolecular force with base material, so as to adhere the composite functional coating to fabric surface.
Hydrotalcite has certain infrared absorption capacity, and simultaneously has a large amount of intercalation space, so that nano metal or nano metal oxide can be fixed;
the hollow structure of the hollow silicon dioxide is provided with a large amount of air, so that the hollow silicon dioxide has a heat insulation effect and is beneficial to reducing infrared radiation;
the nano metal or nano metal oxide has the function of reducing the infrared emissivity;
the polyurethane also has a certain heat insulation effect, and is helpful for reducing infrared radiation;
the perfluoro organosilane has the function of reducing the surface energy and can form super amphiphobic property;
(2) The five components of the functional coating have synergistic effect: on one hand, the composite particle component of the infrared stealth coating can improve the roughness of the fiber surface so as to greatly improve the super-amphiphobic property; on the other hand, the perfluorinated organosilane can resist water-soluble and oil-soluble liquid, and prevent the infrared stealth coating from being infiltrated by the external liquid to damage the coating, thereby prolonging the service life of the infrared stealth coating.
Drawings
FIG. 1 is the water and oil contact angles of the fabric before and after treatment in example 1 of the present invention;
FIG. 2 is a photograph of water and oil droplets of the fabric before and after treatment in accordance with example 1 of the present invention;
FIG. 3 is an infrared camera photograph of a fabric made in accordance with example 1 of the present invention.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
Example 1:
(1) Preparing a 1wt% dopamine aqueous solution, regulating the pH value to 7.5, immersing a fabric (cotton cloth) in the dopamine aqueous solution for 8 hours, and then cleaning and airing;
(2) Preparing a functional coating solution: adding hydrotalcite, hollow silicon dioxide, polyurethane, nano silver powder and full (seventeen) fluorodecyl triethoxysilane into tetrahydrofuran for dispersion, wherein the adding amount of the hydrotalcite is 1wt%, the adding amount of the hollow silicon dioxide is 2wt%, the adding amount of the polyurethane is 5wt%, the adding amount of the nano silver powder is 3wt%, and the adding amount of the full (seventeen) fluorodecyl triethoxysilane is 3wt%;
(3) Immersing the fabric cleaned and dried in the step (1) into the functional coating solution prepared in the step (2), and heating for 30 minutes at 50 ℃ after immersing for 1 minute, thus obtaining the required super-amphiphobic infrared stealth fabric.
Example 2:
(1) Preparing 2wt% concentration dopamine aqueous solution, regulating pH value to 8, immersing fabric (terylene cloth) into the dopamine aqueous solution for 12 hours, and then cleaning and airing;
(2) Preparing a functional coating solution: adding hydrotalcite, hollow silicon dioxide, polyurethane, nano silver powder and full (seventeen) fluorodecyl triethoxysilane into tetrahydrofuran for dispersion, wherein the adding amount of the hydrotalcite is 2wt%, the adding amount of the hollow silicon dioxide is 1wt%, the adding amount of the polyurethane is 1wt%, the adding amount of the nano silver powder is 1wt%, and the adding amount of the full (seventeen) fluorodecyl triethoxysilane is 1wt%;
(3) Immersing the fabric cleaned and dried in the step (1) into the functional coating solution prepared in the step (2), and heating at 100 ℃ for 5 minutes after immersing for 5 minutes to obtain the required super-amphiphobic infrared stealth fabric.
Example 3:
(1) Preparing a dopamine aqueous solution with the concentration of 3wt%, regulating the pH value to 9, immersing the fabric (wool cloth) into the dopamine aqueous solution for 24 hours, and then cleaning and airing;
(2) Preparing a functional coating solution: adding hydrotalcite, hollow silicon dioxide, polyurethane, nano silver powder and full (seventeen) fluorodecyl triethoxysilane into tetrahydrofuran for dispersion, wherein the adding amount of the hydrotalcite is 3wt%, the adding amount of the hollow silicon dioxide is 5wt%, the adding amount of the polyurethane is 3wt%, the adding amount of the nano silver powder is 5wt%, and the adding amount of the full (seventeen) fluorodecyl triethoxysilane is 2wt%;
(3) Immersing the fabric cleaned and dried in the step (1) into the functional coating solution prepared in the step (2), and heating at 80 ℃ for 15 minutes after immersing for 3 minutes to obtain the required super-amphiphobic infrared stealth fabric.
Example 4:
(1) Preparing a 1wt% dopamine aqueous solution, adjusting the pH value to 7.5, immersing the fabric (cotton cloth) into the dopamine aqueous solution for 24 hours, and then cleaning and airing;
(2) Preparing a functional coating solution: adding hydrotalcite, hollow silicon dioxide, polyurethane, nano tin antimony oxide powder and full (seventeen) fluorodecyl triethoxysilane into tetrahydrofuran for dispersion, wherein the adding amount of the hydrotalcite is 1wt%, the adding amount of the hollow silicon dioxide is 2wt%, the adding amount of the polyurethane is 5wt%, the adding amount of the nano tin antimony oxide powder is 3wt%, and the adding amount of the full (seventeen) fluorodecyl triethoxysilane is 3wt%;
(3) Immersing the fabric cleaned and dried in the step (1) into the functional coating solution prepared in the step (2), and heating for 30 minutes at 50 ℃ after immersing for 1 minute, thus obtaining the required super-amphiphobic infrared stealth fabric.
Example 5:
(1) Preparing a dopamine aqueous solution with the concentration of 3wt%, regulating the pH value to 9, immersing the fabric (cotton cloth) into the dopamine aqueous solution for 8 hours, and then cleaning and airing;
(2) Preparing a functional coating solution: adding hydrotalcite, hollow silicon dioxide, polyurethane, nano bismuth oxide powder and full (seventeen) fluorodecyl triethoxysilane into tetrahydrofuran for dispersion, wherein the adding amount of the hydrotalcite is 1wt%, the adding amount of the hollow silicon dioxide is 2wt%, the adding amount of the polyurethane is 5wt%, the adding amount of the nano bismuth oxide powder is 3wt%, and the adding amount of the full (seventeen) fluorodecyl triethoxysilane is 3wt%;
(3) Immersing the washed and dried fabric into the prepared functional coating solution, and heating for 30 minutes at 50 ℃ after immersing for 1 minute, thus obtaining the required super-amphiphobic infrared stealth fabric.
Comparative example 1:
(1) Preparing a 1wt% dopamine aqueous solution, regulating the pH value to 7.5, immersing a fabric (cotton cloth) in the dopamine aqueous solution for 8 hours, and then cleaning and airing;
(2) Preparing a functional coating solution: adding the full (seventeen) fluorodecyl triethoxysilane into tetrahydrofuran for dispersion, wherein the adding amount of the full (seventeen) fluorodecyl triethoxysilane is 3wt%;
(3) Immersing the fabric cleaned and dried in the step (1) into the functional coating solution prepared in the step (2), and heating for 30 minutes at 50 ℃ after immersing for 1 minute, thus obtaining the required super-amphiphobic fabric.
Comparative example 2:
(1) Preparing a 1wt% dopamine aqueous solution, regulating the pH value to 7.5, immersing a fabric (cotton cloth) in the dopamine aqueous solution for 8 hours, and then cleaning and airing;
(2) Preparing a functional coating solution: adding hydrotalcite, hollow silicon dioxide, polyurethane and nano silver powder into tetrahydrofuran for dispersion, wherein the adding amount of the hydrotalcite is 1wt%, the adding amount of the hollow silicon dioxide is 2wt%, the adding amount of the polyurethane is 5wt%, and the adding amount of the nano silver powder is 3wt%;
(3) Immersing the fabric cleaned and dried in the step (1) into the functional coating solution prepared in the step (2), and heating at 50 ℃ for 30 minutes after immersing for 1 minute to obtain the required infrared stealth fabric.
The contact angles and the contact angles after the fastness test of the fabrics prepared in all examples and comparative examples are shown in the following table 1.
Table 1:
the infrared stealth effects of all the examples and comparative examples of the resulting fabrics are shown in Table 2 below (ambient temperature 15 ℃ C.).
Table 2:
note that:
(1) Washing test: according to AATCC61-2006 No.2A standard test;
(2) Abrasion resistance test: tested according to ASTM D4966 standard;
(3) Acid solution testing: putting the prepared fabric into an aqueous solution with pH=1 for 3 hours, washing with clear water and airing;
(4) Alkali solution test: the resulting fabric was placed in an aqueous solution at ph=12 for 3 hours, rinsed with clean water and dried.
Example 1 the water and oil contact angles of the fabric before and after treatment are shown in figure 1.
Example 1 a photograph of water droplets and oil droplets of the fabric before and after treatment is shown in figure 2.
An infrared camera photograph of the fabric produced in example 1 is shown in figure 3.
As can be seen from tables 1 to 2 and fig. 1 to 3:
(1) From Table 1, it can be seen that the fabrics prepared in examples 1 to 5 have super-amphiphobic properties, and the contact angle of the fabrics is only slightly reduced after washing resistance, wear resistance and acid-base corrosion treatment, and the super-amphiphobic properties are still maintained; from fig. 1 to 2, it can be seen that the fabric prepared in example 1 has excellent hydrophobic and oleophobic characteristics;
although the super-hydrophobic and oleophobic properties are achieved in comparative example 1, the water contact angle is only 151 degrees, the oil contact angle is only 142 degrees, and the water contact angle and the oil contact angle are also greatly reduced after various damage tests; compared with the embodiment 1, the composite particle component of the infrared stealth coating can improve the roughness of the fiber surface so as to greatly improve the super amphiphobic property;
(2) As can be seen from fig. 3, the background temperature is 15.4 ℃, the temperature of the palm of a human body is 27 ℃, the fabric before treatment cannot play a role in infrared stealth, and the surface temperature of the fabric after treatment is greatly reduced to 21.8 ℃, so that the gap between the surface temperature and the background infrared characteristics is reduced, and the infrared stealth effect is played;
it can be seen from table 2 that although the infrared camera temperature differences of example 1 and comparative example 2 were close before and after the treatment, the temperature difference of example 1 was not greatly changed after various damage tests, while the temperature difference of comparative example 2 was greatly reduced, indicating that the super-amphiphobic property was resistant to water-soluble and oil-soluble liquids, and the service life of the infrared stealth coating was improved.
The working principle of the embodiment of the application is as follows: first, the surface of the fabric is modified with a large number of reactive groups, such as catechol and amino groups, by the self-polymerization of dopamine to form polydopamine, which is also known as a "universal adhesive coating"; then preparing a functional coating solution, wherein the functional coating mainly comprises the following five components: hydrotalcite, hollow silica, polyurethane, nano metal or nano metal oxide and full (seventeen) fluorodecyl triethoxysilane, wherein the hydrotalcite has a large amount of intercalation space, and nano metal or nano metal oxide can be fixed; the hollow structure of the hollow silicon dioxide has a large amount of air, so that the hollow silicon dioxide has a heat insulation effect; the nano metal or nano metal oxide has the function of reducing the infrared emissivity; polyurethane also has a certain heat insulation effect; the full (seventeen) fluorodecyl triethoxysilane has the function of reducing the surface energy, and can form super amphiphobic property. The fabric has super amphiphobic and infrared stealth effects by combining the five components.

Claims (8)

1. The preparation method of the super-amphiphobic infrared stealth fabric is characterized by comprising the following steps of:
(1) Preparing a dopamine aqueous solution, regulating the pH value to 7.5-9, immersing the fabric in the dopamine aqueous solution for 8-24 hours, and then cleaning and airing;
(2) Preparing a functional coating solution: hydrotalcite, hollow silicon dioxide, polyurethane, nano metal or nano metal oxide and perfluoro organosilane are added into an organic solvent for dispersion;
(3) Immersing the fabric cleaned and dried in the step (1) into the functional coating solution prepared in the step (2), and heating for 5-30 minutes at 50-100 ℃ to obtain the required super-amphiphobic infrared stealth fabric;
the super-amphiphobic infrared stealth fabric has the characteristics of hydrophobicity and oleophobicity and the infrared stealth effect, wherein the composite particle component of the infrared stealth coating can improve the roughness of the fiber surface so as to greatly improve the super-amphiphobic property, the super-amphiphobic property can resist water-soluble and oil-soluble liquid, and the service life of the infrared stealth coating is prolonged;
in the step (2), the metal is nano silver powder;
in the step (2), the metal oxide is at least one of nano tin antimony oxide powder and nano bismuth oxide powder.
2. The method of manufacturing according to claim 1, characterized in that: in the step (1), the concentration of the aqueous solution of dopamine is 1-3 wt%.
3. The method of manufacturing according to claim 1, characterized in that: in the step (1), the fabric is at least one of cotton cloth, polyester cloth and wool cloth.
4. The method of manufacturing according to claim 1, characterized in that: in the step (2), the addition amount of hydrotalcite is 1-3 wt%, the addition amount of hollow silicon dioxide is 1-5 wt%, the addition amount of polyurethane is 1-5 wt%, the addition amount of nano metal or nano metal oxide is 1-5 wt%, and the addition amount of perfluoro organosilane is 1-3 wt%.
5. The method of manufacturing according to claim 1, characterized in that: in the step (2), the organic solvent is tetrahydrofuran.
6. The method of manufacturing according to claim 1, characterized in that: in the step (2), the perfluoro organosilane is perfluoro (seventeen) fluoro decyl triethoxysilane.
7. The production method according to any one of claims 1 to 6, characterized in that: in the step (3), the fabric is heated after being soaked in the functional coating solution for 1 to 5 minutes.
8. A super-amphiphobic infrared stealth fabric produced by the production method of any one of claims 1 to 7.
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