CN113862996A - Polyester-cotton flame-retardant anti-static fabric and preparation method thereof - Google Patents

Polyester-cotton flame-retardant anti-static fabric and preparation method thereof Download PDF

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CN113862996A
CN113862996A CN202111197087.2A CN202111197087A CN113862996A CN 113862996 A CN113862996 A CN 113862996A CN 202111197087 A CN202111197087 A CN 202111197087A CN 113862996 A CN113862996 A CN 113862996A
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fabric
flame
retardant
carbon nano
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CN113862996B (en
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张现杰
卜召军
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Shijiazhuang Jiexiang Textile Co ltd
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Shijiazhuang Jiexiang Textile Co ltd
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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    • 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
    • D06M11/73—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 carbon or compounds thereof
    • D06M11/74—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 carbon or compounds thereof with carbon or graphite; with carbides; with graphitic acids or their salts
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    • 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
    • D06M11/68—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 phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof
    • D06M11/72—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 phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof with metaphosphoric acids or their salts; with polyphosphoric acids or their salts; with perphosphoric acids or their salts
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    • 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
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    • 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
    • D06M13/244—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus
    • D06M13/282—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing phosphorus
    • D06M13/292—Mono-, di- or triesters of phosphoric or phosphorous acids; Salts thereof
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    • 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
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    • 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
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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
    • D06M2101/04—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
    • D06M2101/16—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
    • D06M2200/30—Flame or heat resistance, fire retardancy properties

Abstract

The application relates to the technical field of fabric production, and particularly discloses a polyester-cotton flame-retardant anti-static fabric and a preparation method thereof. The polyester cotton flame-retardant antistatic fabric comprises a fabric layer, a conductive layer and a flame-retardant layer; the conductive layer comprises a carbon nanotube layer and a polypyrrole layer; the number of the conducting layers is 3-10; the preparation method comprises the following steps: s1, cleaning a fabric layer; s2, conducting layer finishing: comprises carbon nanotube layer arrangement and polypyrrole layer arrangement; repeating the operation of finishing the conducting layer until the number of the conducting layers finished on the surface of the fabric layer reaches the designed number, and then drying the fabric layer; s3, finishing the flame-retardant layer: and (3) dipping the fabric layer into the flame retardant, forming a flame retardant layer on the surface of the fabric layer, and drying. The fabric has good antistatic effect and excellent flame retardant property.

Description

Polyester-cotton flame-retardant anti-static fabric and preparation method thereof
Technical Field
The application relates to the technical field of fabric production, in particular to a polyester-cotton flame-retardant anti-static fabric and a preparation method thereof.
Background
Polyester-cotton refers to a common name of a polyester-cotton blended fabric, and is a textile woven by using 65-67% of polyester and 33-35% of cotton mixed yarn, commonly called as 'dacron', which not only keeps the characteristics of high strength and good elasticity recovery of polyester fiber, but also has the characteristic of strong hygroscopicity of cotton fiber, is easy to dye, and is easy to wash, wash-free and quick-dry, and is a common material for making clothes.
Polyester cotton belongs to low-conductivity materials, has high resistance, is very easy to generate static electricity in the actual production and living processes, and can carry high potential of more than 10kV when used, thereby influencing and damaging human bodies and products. In addition, the static spark of the polyester-cotton textile can become an ignition source for the combustion of the polyester-cotton textile, thereby causing combustion or explosion accidents.
In order to eliminate the two dangerous factors of the polyester-cotton textile, the fabric must have excellent flame retardant property and antistatic property. At present, the flame retardant performance and the antistatic performance of textile fabrics are generally realized by adding a flame retardant and an antistatic agent, wherein the flame retardant is generally a halogen-containing flame retardant, and the antistatic agent is generally a surfactant.
In view of the related technology, the applicant thinks that the method enables the polyester cotton textile fabric to have certain antistatic performance, but the antistatic performance of the fabric still has the requirement of further improvement.
Disclosure of Invention
In order to improve the antistatic performance of the polyester-cotton fabric, the application provides the polyester-cotton flame-retardant antistatic fabric and the preparation method thereof.
In a first aspect, the application provides a polyester-cotton flame-retardant antistatic fabric, which adopts the following technical scheme:
the polyester-cotton flame-retardant antistatic fabric is characterized by comprising a fabric layer, a conductive layer and a flame-retardant layer;
the conductive layer comprises a carbon nanotube layer and a polypyrrole layer;
the number of the conductive layers is 3-10.
By adopting the technical scheme, p electrons of carbon atoms of the carbon nano tube form large-range delocalized pi bonds, so that the conjugation effect is obvious, the carbon nano tube has excellent electrical property, the conductivity of the fabric can be improved, and the antistatic capability of the fabric is improved. But carbon nanotube is limited in the electric charge amount of solution, and the promotion of surface fabric electric conductivity is limited, and through carbon nanotube layer and the crisscross arrangement of polypyrrole layer in this application, mutually support between polypyrrole layer and the carbon nanotube layer, superpose with carbon nanotube's electric conductivity, further improve the electric conductivity of surface fabric.
The conducting layer is matched with the flame-retardant layer, the flame-retardant layer improves the flame-retardant performance of the fabric, the carbon nano tubes can form a carbon layer in the combustion process, continuous combustion can be prevented to a certain extent, the combustion can be stopped after a fire source on the fabric layer leaves, and the flame-retardant performance of the fabric is improved.
Preferably, the number of the conductive layers is 5-7.
By adopting the technical scheme, the conductivity of the fabric is gradually improved along with the increase of the number of the conducting layers, but when the number of the conducting layers is greater than 7, the conductivity of the fabric is reduced to some extent, and after the number of the conducting layers is greater than 7, the carbon nano tubes are aggregated due to excessive deposition on the surface of the fabric, so that the difficulty of the carbon nano tubes in deposition on the surface of the fabric is increased, and even the carbon nano tubes fall off, and the conductivity is reduced.
Preferably, the carbon nanotubes used in the carbon nanotube layer are carboxylated carbon nanotubes.
By adopting the technical scheme, strong van der waals force exists among the carbon nano tubes, the carbon nano tubes are easy to agglomerate in the solution and cannot be uniformly dispersed, carboxyl is introduced on the carbon nano tubes by the carboxyl carbon nano tubes, so that the dispersibility of the carbon nano tubes is improved, the carbon nano tubes can be uniformly dispersed in the solution, the carbon nano tubes can form a more compact layer on the fabric, the conductivity of the fabric is improved, and the antistatic performance of the fabric is enhanced.
Preferably, the carbon nanotubes used in the carbon nanotube layer have a diameter of 5 to 7nm and a length of 0.5 to 1.5 μm.
By adopting the technical scheme, the carbon nano tubes in the length-diameter ratio range can be more uniformly adsorbed on the surface of the fabric layer to form a compact and uniform film structure, and the improvement of the conductivity of the fabric is facilitated.
Preferably, the flame retardant layer is on the side of the conductive layer away from the fabric layer.
By adopting the technical scheme, the carbon nano tubes are adsorbed on the surface of the fabric, so that the roughness of the fabric is increased, and the stability of the combination of the flame retardant and the fabric layer is improved. In addition, the external fire source acts on the flame-retardant layer firstly, the flame-retardant layer plays a flame-retardant role at first, and the carbon nanotube layer plays an auxiliary flame-retardant role, so that the flame-retardant performance of the fabric is improved.
Preferably, the flame-retardant layer is obtained by arranging a flame retardant on the surface of the conductive layer, and the flame retardant is prepared from the following raw materials in parts by weight: 10-20 parts of montmorillonite, 80-100 parts of tetraphenyl bisphenol-A-diphosphate, 20-40 parts of graphite, 60-80 parts of ammonium polyphosphate and 1000 parts of water.
By adopting the technical scheme.
Preferably, the carbon nanotube layer is obtained by arranging carbon nanotubes on the surface of the fabric layer, and butyltrimethoxysilane is added for matching use during the arrangement of the carbon nanotubes.
By adopting the technical scheme, the butyl trimethoxy silane can improve the dispersibility of the carbon nano tubes, and the carbon nano tubes are more uniformly dispersed in the dispersion liquid, so that the carbon nano tubes are uniformly distributed on the surface of the fabric layer, the compactness and the uniformity of the carbon nano tube layer are improved, and the flame retardant effect of the fabric is improved.
In a second aspect, the application provides a method for preparing a polyester-cotton flame-retardant antistatic fabric, which adopts the following technical scheme: the preparation method of the polyester-cotton flame-retardant antistatic fabric is characterized by comprising the following steps of:
s1, cleaning a fabric layer: removing impurities and oil stains on the surface of the fabric layer;
s2, conducting layer finishing:
arranging a carbon nanotube layer: dipping the fabric layer in the carbon nano tube dispersion liquid to assemble the carbon nano tubes on the fabric layer, then washing the fabric layer, and removing the physical adsorption on the surface of the fabric layer to form a carbon nano tube layer;
and (3) finishing a polypyrrole layer: dipping the fabric layer in a pyrrole monomer solution, then dipping the fabric layer dipped in the pyrrole monomer solution in an oxidant solution for oxidative polymerization, then washing the fabric layer, and removing physical adsorption on the surface of the fabric layer to form a polypyrrole layer;
repeating the operation until the number of the conducting layers arranged on the surface of the fabric layer reaches the designed number, and then drying the fabric layer;
s3, finishing the flame-retardant layer: and (3) dipping the fabric layer into the flame retardant, forming a flame retardant layer on the surface of the fabric layer, and drying.
Preferably, when finishing the carbon nanotube layer, adding butyltrimethoxysilane into the carbon nanotube dispersion liquid, wherein the weight ratio of the butyltrimethoxysilane to the carbon nanotubes in the carbon nanotube dispersion liquid is 1: (10-20).
By adopting the technical scheme, the carbon nanotube layer and the polypyrrole layer are assembled on the surface of the fabric layer by layer according to a certain sequence to form the conductive layer, and the flame-retardant layer is assembled on the surface of the fabric, so that the conductive layer not only improves the conductivity and the anti-static capability of the fabric, but also improves the flame-retardant property of the fabric by matching with the flame-retardant layer.
Preferably, before finishing the carbon nanotube layer, cationization is carried out on the fabric layer, the carbon nanotube layer in the conducting layer is finished on the surface of the fabric layer, and the polypyrrole layer is finished on the surface of the carbon nanotube layer;
the cationization method of the fabric layer comprises the following steps: and (3) dipping the fabric layer in a branched polyethyleneimine solution, and then washing the fabric layer to remove the unadsorbed cationic polyelectrolyte on the surface of the fabric layer.
By adopting the technical scheme, the cationic polyelectrolyte is adsorbed on the surface of the fabric, the surface of the fabric carries cations, and the polycarboxylic carbon nanotube is anionic, so that the connection stability of the carbon nanotube and the fabric can be improved, the falling probability of the carbon nanotube layer is reduced, and the conductivity and the flame retardance of the fabric can be improved.
In summary, the present application has the following beneficial effects:
1. the carbon nanotube layer and the polypyrrole layer are compounded to be used as the conductive layer and matched with the flame-retardant layer, and the charge surface density of the prepared fabric is 1.08-1.45 mu C/m2Meanwhile, the conductive performance of the fabric is superior, and the antistatic performance is improved; the afterflame time and the smoldering time of the fabric are both 0s, the fabric is self-extinguished after being away from the fire, and the burning damage length of the fabric is 6.28-7.35cm, the flame retardant property of the fabric is excellent.
2. In the application, the continuous combustion time and the smoldering time of the fabric prepared by preferably adopting the flame retardant compounded by montmorillonite, tetraphenyl bisphenol-A-diphosphate, graphite and ammonium polyphosphate are both 0s, the fabric is self-extinguished after being away from fire, the combustion damage length of the fabric is 6.28-6.38cm, and the flame retardant property of the fabric is further improved.
Detailed Description
The present application will be described in further detail with reference to examples.
Raw materials
The molecular weight of ammonium polyphosphate is 149.
Examples
Example 1
A polyester-cotton flame-retardant antistatic fabric is prepared by the following steps:
s1, cleaning a fabric layer:
soaking the fabric layer in deionized water, boiling, soaking in anhydrous ethanol for 30min, and oven drying at 80 deg.C, wherein the fabric layer can be polyester cotton fabric;
s2, conducting layer finishing:
s2.1, finishing the carbon nanotube layer: adding the carbon nano tube into tetrahydrofuran, and performing ultrasonic dispersion for 30min to obtain a carbon nano tube dispersion liquid, wherein the weight ratio of the carbon nano tube to the tetrahydrofuran is 1: 500, the diameter of the carbon nano tube is 5nm, and the length of the carbon nano tube is 1.5 mu m;
soaking the fabric layer obtained in the step S1 in the carbon nanotube dispersion liquid for 10min to assemble the carbon nanotubes on the fabric layer, then washing the fabric layer with deionized water for 5 times to remove the physical adsorption on the surface of the fabric layer to form a carbon nanotube layer;
s2.2, polypyrrole layer finishing: soaking the fabric layer obtained in the step S2.1 after the carbon nano tubes are finished in pyrrole monomer solution for 15min, taking out the fabric layer, rolling off redundant solution by using a padder, wherein the rolling residual rate is 110%, and then soaking the fabric layer in FeCl3Reacting in the solution at 3 ℃ for 30min to assemble the carbon nano tubes on the fabric layer, then washing the fabric layer with deionized water for 5 times, and removing the physical adsorption on the surface of the fabric layer to form a polypyrrole layer;
repeating the operation S2.1 and S2.2 for 3 times, and drying the fabric layer at 45 ℃ for 60 min;
s3, finishing the flame-retardant layer:
and (3) soaking the fabric layer obtained after finishing the S2 conductive layer in an ammonium polyphosphate solution flame retardant to form a flame retardant layer on the surface of the fabric layer, then pre-drying the fabric layer at 70 ℃ for 1h, then baking at 120 ℃ for 2h, washing with water, and drying in the air to obtain the polyester-cotton flame-retardant antistatic fabric.
Example 2
Unlike in example 1, operations S2.1 and S2.2 are repeated 5 times in step S2.
Example 3
Unlike in example 1, operations S2.1 and S2.2 are repeated 7 times in step S2.
Example 4
Unlike in example 1, operations S2.1 and S2.2 are repeated 10 times in step S2.
Example 5
Unlike example 3, the carbon nanotubes were carboxyl carbon nanotubes.
Example 6
Unlike example 5, the carboxyl carbon nanotube has a diameter of 7nm and a length of 0.5. mu.m.
Example 7
Unlike example 5, the carboxyl carbon nanotube has a diameter of 15nm and a length of 0.1. mu.m.
Example 8
Unlike example 5, the carboxyl carbon nanotube has a diameter of 2nm and a length of 4 μm.
Example 9
A polyester-cotton flame-retardant antistatic fabric is prepared by the following steps:
s1 is the same as in example 1;
s2, finishing the flame-retardant layer:
dipping the fabric layer obtained in the step S1 in an ammonium polyphosphate solution flame retardant to form a flame retardant layer on the surface of the fabric layer, then pre-baking the fabric layer at 70 ℃ for 1h, and baking at 120 ℃ for 2 h;
s3, conducting layer finishing:
s3.1, finishing the carbon nanotube layer: adding the carbon nano tube into tetrahydrofuran, and performing ultrasonic dispersion for 30min to obtain a carbon nano tube dispersion liquid, wherein the weight ratio of the carbon nano tube to the tetrahydrofuran is 1: 500, the diameter of the carbon nano tube is 5nm, and the length of the carbon nano tube is 1.5 mu m;
soaking the fabric layer obtained in the step S2 in the carbon nanotube dispersion liquid for 10min to assemble the carbon nanotubes on the fabric layer, then washing the fabric layer with deionized water for 5 times to remove the physical adsorption on the surface of the fabric layer to form a carbon nanotube layer;
s3.2, polypyrrole layer finishing: soaking the fabric layer obtained in S3.1 after the carbon nano tubes are finished in pyrrole monomer solution for 15min, taking out the fabric layer, rolling off redundant solution by using a padder, wherein the rolling residual rate is 110%, and then soaking the fabric layer in FeCl3Reacting in the solution at 3 ℃ for 30min to assemble the carbon nano tubes on the fabric layer, then washing the fabric layer with deionized water for 5 times, and removing the physical adsorption on the surface of the fabric layer to form a polypyrrole layer;
and repeating the operation S3.1 and the operation S3.2 for 3 times totally, and then drying the fabric layer at the temperature of 45 ℃ for 60min to obtain the flame-retardant and anti-static fabric.
Examples 10 to 12
The differences from example 5, the differences in flame retardant, are detailed in table 1.
TABLE 1 flame retardant proportioning Table (10g) for example 5 and examples 10-12
Figure BDA0003303468020000051
Figure BDA0003303468020000061
Example 13
In contrast to the embodiment 11, in this case,
s2, conducting layer finishing:
s2.1, finishing the carbon nanotube layer: adding a carbon nano tube into tetrahydrofuran, performing ultrasonic dispersion for 30min, and then adding butyltrimethoxysilane to obtain a carbon nano tube dispersion liquid, wherein the weight ratio of the carbon nano tube to the tetrahydrofuran is 1: 500, the weight ratio of the butyl trimethoxy silane to the carbon nano tube is 1: 10, the diameter of the carbon nano tube is 5nm, and the length of the carbon nano tube is 1.5 mu m; the rest is the same as in example 11.
Example 14
Different from the embodiment 13, the weight ratio of the butyl trimethoxy silane to the carbon nano tubes in the carbon nano tube dispersion liquid is 1: 20.
example 15
Different from the embodiment 13, the weight ratio of the butyl trimethoxy silane to the carbon nano tubes in the carbon nano tube dispersion liquid is 1: 2.
example 16
Different from the embodiment 13, the weight ratio of the butyl trimethoxy silane to the carbon nano tubes in the carbon nano tube dispersion liquid is 1: 60.
example 17
A polyester-cotton flame-retardant antistatic fabric is prepared by the following steps:
s1, cleaning a fabric layer:
soaking the fabric layer in deionized water, boiling, soaking in anhydrous ethanol for 30min, and oven drying at 80 deg.C, wherein the fabric layer can be polyester cotton fabric;
s2, cationization of a fabric layer:
obtaining a branched polyethyleneimine solution in branched polyethyleneimine deionized water, wherein the weight ratio of the branched polyethyleneimine to the ionized water is 1: 250;
and (3) immersing the fabric layer obtained in the step S1 in a branched polyethyleneimine aqueous solution for 3min, then washing the fabric layer for 5 times by using deionized water, and drying the fabric layer at the temperature of 60 ℃:
the rest of the procedure was the same as in example 13.
Comparative example
Comparative example 1
Unlike example 9, the polypyrrole layer was not included in the conductive layer, and the carbon nanotube layer was provided with 6 layers.
Comparative example 2
Unlike example 9, the number of conductive layers was 1.
Comparative example 3
Unlike embodiment 9, the conductive layer is not included.
Performance test
Detection method/test method
And (3) detecting the antistatic performance: evaluation of electrostatic properties of textiles according to section 2: the charge surface density of the fabrics in examples 1-17 and comparative examples 1-3 is detected by GB/T12703.2-2008;
and (3) detecting the flame retardant property: according to the textile combustion performance test vertical method GB/5445-1997, the fabrics in the examples 1-17 and the comparative examples 1-3 are cut into the size of 30cm multiplied by 8cm, fixed on a clamp of a vertical combustion instrument, set the ignition time to be 12s and adjusted the flame height to be 40 +/-2 mm. And recording the afterflame time and the smoldering time of the fabric, and measuring the damage length of the fabric after combustion.
The results are shown in Table 2.
TABLE 2 Performance test results
Figure BDA0003303468020000071
Figure BDA0003303468020000081
Combining examples 1-17 and comparative examples 1-3, and table 2, it can be seen that the charge areal density of the facings of examples 1-17 is less than that of comparative examples 1-3, which demonstrates the better antistatic ability of the facings of examples 1-17; the afterflame time and the smoldering time of the fabrics in the examples 1-17 are both 0s, which shows that the fabrics have excellent flame-retardant effect because the flame self-extinguishes after the fire source leaves, and the damage length of the fabrics in the examples 1-17 is obviously lower than that of the fabrics in the comparative examples 1-3, which also shows that the fabrics have better flame-retardant performance.
By combining example 9 with comparative examples 1-3 and table 2, it can be seen that the conductive layer in comparative example 1 only includes the carbon nanotube layer, and the charge surface density of comparative example 1 is significantly higher than that of example 9, which may be because the conductive performance of the polypyrrole layer is matched with the conductive performance of the carbon nanotube layer, so as to improve the antistatic performance of the fabric; in the comparative example 2, the number of the conductive layers is 1, so that the conductive capability of the fabric is obviously reduced; the conductive layer is not arranged in the comparative example 3, the conductive capability of the fabric is poorer, and the flame retardant property of the comparative example 3 is obviously lower than that of the comparative example 2, which shows that the conductive layer not only can improve the conductivity of the fabric, but also can be matched with the flame retardant layer to improve the flame retardant property of the fabric.
With reference to examples 1 to 4 and table 2, it can be seen that the conductivity of the fabric is gradually improved with the increase of the number of conductive layers, but when the number of conductive layers is increased to 10, the conductivity is reduced, which means that the number of conductive layers is controlled to 7, which not only can ensure the conductivity of the fabric, but also does not waste the conductive layer raw material.
By combining example 1 and example 9 and table 2, it can be seen that the effect of finishing the flame retardant layer and then finishing the conductive layer on the conductivity of the fabric is not great, but the flame retardant performance of the fabric is reduced.
By combining the example 5 with the examples 10-12 and combining the table 2, the flame retardant compounded by montmorillonite, tetraphenyl bisphenol-A-diphosphate, graphite and ammonium polyphosphate can obtain fabrics with better flame retardant performance.
Combining examples 11 and 13-16, and combining table 2, it can be seen that the electrical conductivity of the fabrics in examples 13-16 is better, which is probably because the butyl trimethoxy silane can improve the dispersibility of the carbon nanotubes, so that the carbon nanotubes form a uniform and dense layer structure on the surface of the fabric, thereby improving the electrical conductivity of the fabric.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims (10)

1. The polyester-cotton flame-retardant antistatic fabric is characterized by comprising a fabric layer, a conductive layer and a flame-retardant layer;
the conductive layer comprises a carbon nanotube layer and a polypyrrole layer;
the number of the conductive layers is 3-10.
2. The polyester-cotton flame-retardant antistatic fabric according to claim 1, characterized in that: the number of the conducting layers is 5-7.
3. The polyester-cotton flame-retardant antistatic fabric according to claim 1, characterized in that: the carbon nano tube used in the carbon nano tube layer is a carboxylated carbon nano tube.
4. The polyester-cotton flame-retardant antistatic fabric according to claim 1, characterized in that: the diameter of the carbon nano tube used in the carbon nano tube layer is 5-7nm, and the length of the carbon nano tube used in the carbon nano tube layer is 0.5-1.5 mu m.
5. The polyester-cotton flame-retardant antistatic fabric according to claim 1, characterized in that: the flame-retardant layer is arranged on one side of the conductive layer, which is far away from the fabric layer.
6. The polyester-cotton flame-retardant antistatic fabric according to claim 5, characterized in that: the flame-retardant layer is obtained by arranging a flame retardant on the surface of the conductive layer, and the flame retardant is prepared from the following raw materials in parts by weight: 10-20 parts of montmorillonite, 80-100 parts of tetraphenyl bisphenol-A-diphosphate, 20-40 parts of graphite, 60-80 parts of ammonium polyphosphate and 1000 parts of water.
7. The polyester-cotton flame-retardant antistatic fabric according to claim 1, characterized in that: the carbon nanotube layer is obtained by arranging carbon nanotubes on the surface of the fabric layer, and butyl trimethoxy silane is added for matching use when the carbon nanotubes are arranged.
8. A preparation method of the polyester-cotton flame-retardant antistatic fabric as claimed in any one of claims 1 to 6, characterized by comprising the following steps:
s1, cleaning a fabric layer: removing impurities and oil stains on the surface of the fabric layer;
s2, conducting layer finishing:
arranging a carbon nanotube layer: dipping the fabric layer in the carbon nano tube dispersion liquid to assemble the carbon nano tubes on the fabric layer, then washing the fabric layer, and removing the physical adsorption on the surface of the fabric layer to form a carbon nano tube layer;
and (3) finishing a polypyrrole layer: dipping the fabric layer in a pyrrole monomer solution, then dipping the fabric layer dipped in the pyrrole monomer solution in an oxidant solution for oxidative polymerization, then washing the fabric layer, and removing physical adsorption on the surface of the fabric layer to form a polypyrrole layer;
repeating the operation until the number of the conducting layers arranged on the surface of the fabric layer reaches the designed number, and then drying the fabric layer;
s3, finishing the flame-retardant layer: and (3) dipping the fabric layer into the flame retardant, forming a flame retardant layer on the surface of the fabric layer, and drying.
9. The preparation method of the polyester-cotton flame-retardant antistatic fabric according to claim 8, characterized by comprising the following steps: when finishing the carbon nano tube layer, adding butyltrimethoxysilane into the carbon nano tube dispersion liquid, wherein the weight ratio of the butyltrimethoxysilane to the carbon nano tubes in the carbon nano tube dispersion liquid is 1: (10-20).
10. The preparation method of the polyester-cotton flame-retardant antistatic fabric according to claim 8, characterized by comprising the following steps: before finishing the carbon nano tube layer, cationizing the fabric layer, finishing the carbon nano tube layer in the conducting layer on the surface of the fabric layer, and finishing the polypyrrole layer on the surface of the carbon nano tube layer;
the cationization method of the fabric layer comprises the following steps: and (3) dipping the fabric layer in a branched polyethyleneimine solution, and then washing the fabric layer to remove the unadsorbed cationic polyelectrolyte on the surface of the fabric layer.
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