CN115897260A - Washable intelligent fabric coated with conductive ink and preparation method thereof - Google Patents
Washable intelligent fabric coated with conductive ink and preparation method thereof Download PDFInfo
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Abstract
The invention relates to the technical development field of intelligent textile materials, in particular to a washable intelligent fabric coated with conductive ink and a preparation method thereof. The fabric comprises a textile fabric substrate layer, wherein a resin protective layer, an adhesive connecting layer and a conductive pattern functional layer are sequentially coated on the surface of the textile fabric substrate layer. By coating and reinforcing the resin protective layer, a flexible and flat protective layer can be created on the textile fabric substrate layer, a flat functional interface is provided for the conductive pattern functional layer and the adhesive connecting layer, and the resin protective layer endows the textile fabric with a flat substrate supporting effect; the adhesive connecting layer can effectively improve the adhesive force between the conductive pattern functional layer and the resin functional layer.
Description
Technical Field
The invention relates to the technical development field of intelligent textile materials, in particular to a washable intelligent fabric coated with conductive ink and a preparation method thereof.
Background
The flexible intelligent electronic device is one of the important directions of future development of electronic technology, and the flexible textile material is combined with the electronic technology, so that the development of the intelligent fabric with the characteristics of flexibility, folding, extensibility and the like has great significance to both textile and electronic technology. However, when the textile fabric is used as a substrate material, a large number of gaps or rough surfaces and other morphological structures exist on the surface of the textile fabric, the defect structures are not beneficial to the adhesion of the conductive functional coating, and the retention rate of the functional coating is reduced rapidly after long-term use or washing. Therefore, how to synchronously improve the conductive capability of the intelligent coating and the adhesive force between the intelligent coating and the textile fabric is the key for developing the washable flexible intelligent textile material.
Disclosure of Invention
Aiming at the defects, the invention aims to provide the washable intelligent fabric coated with the conductive ink and the preparation method thereof, and the washable intelligent fabric coated with the conductive ink solves the defects of low coating conductivity, low adhesion, washability, bending resistance and the like in the prior art from two aspects of a conductive carbon black modification process and a fabric coating bonding process technology.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the utility model provides a coating has conductive ink's water-fast intelligent fabric that washes, includes textile fabric stratum basale, its characterized in that, textile fabric stratum basale surface coats in proper order has resin protective layer, adhesive connecting layer and conductive pattern functional layer.
The conductive pattern functional layer is formed by coating conductive ink, and the conductive ink comprises modified conductive carbon black filler, MXene materials, water-based acrylic latex, water-based polyurethane, ammonium stearate, isocyanate and titanium dioxide.
The conductive ink comprises, by weight, 15-40 parts of modified conductive carbon black filler, 2-4 parts of MXene material, 20-30 parts of waterborne acrylic latex, 20-30 parts of waterborne polyurethane, 5-15 parts of ammonium stearate, 1-4 parts of isocyanate and 5-10 parts of titanium dioxide.
The modified conductive carbon black filler is carbon black modified by sodium dodecyl sulfate, and the MXene material is a nanosheet with Ag loaded on the surface;
the textile fabric substrate layer is one or more of non-woven fabric, knitted fabric, woven fabric and woven fabric.
The resin protective layer comprises water-based polyacrylic acid latex, water-based polyurethane, ammonium stearate, isocyanate and titanium dioxide.
Wherein, the resin protective layer comprises 25 to 45 parts of waterborne polyacrylic latex, 25 to 45 parts of waterborne polyurethane, 10 to 20 parts of ammonium stearate, 1 to 4 parts of isocyanate and 5 to 10 parts of titanium dioxide according to parts by weight.
Wherein the adhesive connecting layer conforms to the pattern of the conductive pattern functional layer.
Wherein the adhesive connecting layer is one of polyacrylate, vinyl acetate, neoprene, polyvinyl chloride and polyurethane adhesives.
A method of making a wash-durable smart fabric coated with conductive ink, comprising the steps of: 1) Weighing 10 parts of conductive carbon black, placing the conductive carbon black in 10 parts of deionized water, and stirring the conductive carbon black in an ultrasonic oscillation manner at room temperature to obtain a uniform dispersion liquid; continuously adding 5-15 parts of sodium dodecyl sulfate and 5-15 parts of Arabic gum into the dispersion liquid in sequence, and reacting for 1-3 hours under the condition of 40-60 ℃ and ultrasonic oscillation stirring; centrifuging to remove supernatant liquid, and finally obtaining a precipitate which is the required modified conductive carbon black filler; 2) According to the parts by weight, fully mixing and stirring 15-40 parts of the modified conductive carbon black filler, 2-4 parts of MXene material, 20-30 parts of waterborne acrylic latex, 20-30 parts of waterborne polyurethane, 5-15 parts of ammonium stearate, 1-4 parts of isocyanate and 5-10 parts of titanium dioxide, and preparing conductive ink based on the modified conductive carbon black and/MXene for later use; 3) According to the weight parts, 25-45 parts of waterborne polyacrylic acid latex, 25-45 parts of waterborne polyurethane, 10-20 parts of ammonium stearate, 1-4 parts of isocyanate and 5-10 parts of titanium dioxide are fully mixed and stirred to prepare the resin protective layer; 4) Uniformly coating the resin protective layer solution prepared in the step 3) on the surface of the textile fabric by using a scraper coating process, and controllingThe thickness of the fabric is 0.2-2 mm, and the coated fabric is placed in a hot air environment at 80-120 ℃ for heat treatment for 15-30 min; 5) Uniformly coating the adhesive on the resin protective layer by using methods such as screen printing or atomized spraying, and the like, wherein the gram weight of the adhesive is controlled to be 0.5-5 g/m 2 (ii) a 6) After the adhesive is coated, standing at normal temperature for 0-10 min, correspondingly coating the conductive ink prepared in the step 2) on an adhesive layer by adopting methods such as silk-screen printing or atomized spraying, wherein the thickness of the conductive functional layer is 0.01-0.5 mm, and placing the coated fabric in a hot air environment of 80-120 ℃ for heat treatment for 15-30 min.
After the technical scheme is adopted, the invention has the beneficial effects that:
1. the washable intelligent fabric coated with the conductive ink comprises a textile fabric substrate layer, wherein a resin protective layer, an adhesive connecting layer and a conductive pattern functional layer are sequentially coated on the surface of the textile fabric substrate layer. By coating and reinforcing the resin protective layer, a flexible and flat protective layer can be created on the textile fabric substrate layer, a flat functional interface is provided for the conductive pattern functional layer and the adhesive connecting layer, and the resin protective layer endows the textile fabric with a flat substrate supporting effect; the adhesive connecting layer can effectively improve the adhesive force between the conductive pattern functional layer and the resin functional layer.
2. The conductive component in the conductive ink is a mixed conductive component of modified conductive carbon black and MXene materials, and the carbon black modified by the sodium dodecyl sulfate has better similar compatibility with a resin solution and better dispersibility; the surface of the MXene material is provided with Ag-loaded Ag functional load MXene, so that the MXene material is stronger in conductive capability; the three-dimensional conductive carbon black and the two-dimensional MXene are cooperatively interconnected, so that each functional attribute of the conductive functional layer is enhanced, and the conductive efficiency, the mechanical strength, the wear resistance, the washing resistance and the like of the final conductive pattern functional layer can be improved.
3. The method for preparing the washable intelligent fabric coated with the conductive ink has the advantages that the preparation process of the intelligent fabric is simple, the special requirements on equipment are avoided, the continuous production can be realized, the method can be widely applied to the flexible electronic technology, and the prepared conductive pattern functional layer is high in conductivity, strong in washable capability and wide in application prospect.
In conclusion, the water-washing-resistant intelligent fabric coated with the conductive ink and the preparation method thereof solve the technical problems that the conductive functional layer of the intelligent fabric in the prior art is poor in adhesive force, easy to fall off and poor in conductive effect. The intelligent fabric can be used for advertising lamp box electronic propaganda posters, flexible supercapacitors, flexible circuit devices and the like, and still shows extremely high electronic conduction and adhesion performance after 100 times of water washing tests.
Detailed Description
The invention is further illustrated by the following examples.
The utility model provides a coating has conductive ink's resistant washing intelligent fabric, includes the textile fabric stratum basale, and textile fabric stratum basale surface has coated resin protective layer, adhesive tie coat and conductive pattern functional layer in proper order. The conductive pattern functional layer is formed by coating conductive ink, and the conductive ink comprises modified conductive carbon black filler, MXene material, water-based acrylic latex, water-based polyurethane, ammonium stearate, isocyanate and titanium dioxide. MXene is a novel transition metal carbon/nitride two-dimensional nano layered material, and due to unique physical and chemical properties, the MXene also has excellent conductivity in multiple fields of energy storage and conversion, sensors, multifunctional polymer composite materials and the like in recent years, and after the MXene is compounded with rubber, a sensing material and a sensor with excellent sensitivity and stability can be prepared. MXene has the characteristics of high specific surface area and high conductivity, so that the MXene not only can provide rich interfaces for microwave absorption, but also can perform multiple internal reflections, and is beneficial to the scattering and absorption of electromagnetic waves, thereby having excellent electromagnetic shielding performance. When MXene is mixed into a polymer material, the mechanical property, the thermal conductivity, the flame retardance, the dielectric property and the like of the polymer material can also be improved. MXene contains a carbon layer, has the property similar to graphene, and a transition metal layer, and can show the performance similar to transition metal oxide. The conductive ink comprises, by weight, 15-40 parts of modified conductive carbon black filler, 2-4 parts of MXene material, 20-30 parts of waterborne acrylic latex, 20-30 parts of waterborne polyurethane, 5-15 parts of ammonium stearate, 1-4 parts of isocyanate and 5-10 parts of titanium dioxide. The modified conductive carbon black filler is carbon black modified by sodium dodecyl sulfate, and the MXene material is a nanosheet with Ag loaded on the surface. The textile fabric substrate layer is one or more of non-woven fabric, knitted fabric, woven fabric and woven fabric. According to parts by weight, the resin protective layer comprises 25-45 parts of aqueous polyacrylic acid latex, 25-45 parts of aqueous polyurethane, 10-20 parts of ammonium stearate, 1-4 parts of isocyanate and 5-10 parts of titanium dioxide. The adhesive connecting layer is consistent with the patterns of the conductive pattern functional layer. The adhesive connecting layer is one of polyacrylate, vinyl acetate, neoprene, polyvinyl chloride and polyurethane adhesives.
Example one
The invention discloses a method for preparing a washable intelligent fabric coated with conductive ink, which comprises the following steps:
1) Weighing 10 parts of conductive carbon black, placing the conductive carbon black into 10 parts of deionized water, and stirring the conductive carbon black in an ultrasonic oscillation manner at room temperature to obtain a uniform dispersion liquid; continuously adding 5-15 parts of sodium dodecyl sulfate and 5-15 parts of Arabic gum into the dispersion liquid in sequence, and reacting for 1-3 hours under the condition of 40-60 ℃ and ultrasonic oscillation stirring; centrifuging to remove supernatant liquid, and finally obtaining a precipitate which is the required modified conductive carbon black filler;
2) According to the parts by weight, 30 parts of modified carbon black conductive filler, 2 parts of MXene, 25 parts of waterborne acrylic latex, 25 parts of waterborne polyurethane, 10 parts of ammonium stearate, 2 parts of isocyanate and 5 parts of titanium dioxide are fully mixed and stirred to prepare the conductive ink based on the modified conductive carbon black and the MXene for later use.
3) According to the weight parts, 25 parts of aqueous polyacrylic acid latex, 45 parts of aqueous polyurethane, 20 parts of ammonium stearate, 4 parts of isocyanate and 5 parts of titanium dioxide are fully mixed and stirred to prepare a resin protective layer solution.
4) Uniformly coating the resin protective layer solution prepared in the step 3) on the surface of the textile fabric by using a scraper coating process, controlling the thickness of the textile fabric to be 0.2mm, and placing the coated fabric in a hot air environment at 80 ℃ for heat treatment for 20min.
5) Uniformly coating a polyacrylate adhesive on the resin protective layer by using an atomization spraying technology, and controlling the gram weight of the adhesive to be 0.5g/m 2 。
6) After the adhesive is coated, standing at normal temperature for 1min, correspondingly coating the conductive ink prepared in the step 2) on the adhesive layer by adopting an atomization spraying method, wherein the thickness of the conductive functional layer is 0.02mm, and placing the coated fabric in a hot air environment at 80 ℃ for heat treatment for 30min.
Example two
The invention discloses a method for preparing a washable intelligent fabric coated with conductive ink, which comprises the following steps:
1) Weighing 10 parts of conductive carbon black, placing the conductive carbon black in 10 parts of deionized water, and stirring the conductive carbon black in an ultrasonic oscillation manner at room temperature to obtain a uniform dispersion liquid; continuously adding 5-15 parts of sodium dodecyl sulfate and 5-15 parts of Arabic gum into the dispersion liquid in sequence, and reacting for 1-3 hours under the condition of 40-60 ℃ and ultrasonic oscillation stirring; centrifuging to remove supernatant liquid, and finally obtaining a precipitate which is the required modified conductive carbon black filler;
2) According to the parts by weight, 15 parts of modified carbon black conductive filler, 4 parts of MXene, 20 parts of waterborne acrylic latex, 30 parts of waterborne polyurethane, 5 parts of ammonium stearate, 4 parts of isocyanate and 10 parts of titanium dioxide are fully mixed and stirred to prepare the conductive ink based on the modified conductive carbon black and the MXene. And (5) standby.
3) According to the parts by weight, 45 parts of aqueous polyacrylic acid latex, 25 parts of aqueous polyurethane, 10 parts of ammonium stearate, 1 part of isocyanate and 10 parts of titanium dioxide are fully mixed and stirred to prepare a resin protective layer solution.
4) Uniformly coating the resin protective layer solution prepared in the step 3) on the surface of the textile fabric by using a scraper coating process, controlling the thickness of the textile fabric to be 1mm, and placing the coated fabric in a hot air environment at 100 ℃ for heat treatment for 20min.
5) Uniformly coating one of polyacrylate, vinyl acetate, neoprene, polyvinyl chloride, polyurethane and other adhesives on the resin protective layer by screen printing method, and controlling the gram weight of the adhesive to be 1g/m 2 。
6) After the adhesive is coated, standing at normal temperature for 5min, correspondingly coating the conductive ink prepared in the step 2) on an adhesive layer by adopting screen printing, wherein the thickness of the conductive functional layer is 0.5mm, and placing the coated fabric in a hot air environment of 120 ℃ for heat treatment for 30min.
EXAMPLE III
The invention discloses a method for preparing a washable intelligent fabric coated with conductive ink, which comprises the following steps:
1) Weighing 10 parts of conductive carbon black, placing the conductive carbon black into 10 parts of deionized water, and stirring the conductive carbon black in an ultrasonic oscillation manner at room temperature to obtain a uniform dispersion liquid; sequentially adding 5-15 parts of sodium dodecyl sulfate and 5-15 parts of Arabic gum into the dispersion, and reacting for 1-3 hours under the condition of 40-60 ℃ and ultrasonic vibration stirring; centrifuging to remove supernatant and finally obtaining the precipitate which is the required modified conductive carbon black filler;
2) According to the parts by weight, 40 parts of modified carbon black conductive filler, 3 parts of MXene material, 30 parts of waterborne acrylic latex, 20 parts of waterborne polyurethane, 15 parts of ammonium stearate, 1 part of isocyanate and 8 parts of titanium dioxide are fully mixed and stirred to prepare the conductive ink based on the modified conductive carbon black and the MXene for later use.
3) According to the parts by weight, fully mixing and stirring 35 parts of aqueous polyacrylic acid latex, 35 parts of aqueous polyurethane, 15 parts of ammonium stearate, 3 parts of isocyanate and 8 parts of titanium dioxide, and preparing a resin protective layer solution.
4) Uniformly coating the resin protective layer solution prepared in the step 3) on the surface of the textile fabric by using a scraper coating process, controlling the thickness of the textile fabric to be 2mm, and placing the coated fabric in a hot air environment at 120 ℃ for heat treatment for 30min.
5) Uniformly coating the polyvinyl chloride adhesive on the resin protective layer by using an atomization spraying method, and controlling the gram weight of the adhesive to be 5g/m 2 。
6) After the adhesive is coated, standing at normal temperature for 10min, correspondingly coating the conductive ink prepared in the step 2) on an adhesive layer by adopting atomization spraying, wherein the thickness of the conductive functional layer is 0.1mm, and placing the coated fabric in a hot air environment at 100 ℃ for heat treatment for 25min.
Comparative example 1
A traditional unmodified carbon black conductive ink and a preparation method of intelligent fabric printed by a direct coating thereof comprise the following steps:
1) According to the weight portion, 35 portions of unmodified carbon black conductive filler, 30 portions of waterborne acrylic latex, 20 portions of waterborne polyurethane, 15 portions of ammonium stearate, 1 portion of isocyanate and 8 portions of titanium dioxide are fully mixed and stirred to prepare the conductive ink.
2) The conductive ink is uniformly coated on a textile fabric layer by utilizing a screen printing process, the thickness of a conductive functional layer is controlled to be 0.1mm, and the coated fabric is placed in a hot air environment at 100 ℃ for heat treatment for 25min.
Three intelligent fabrics obtained in the first to third embodiments of the invention and the fabric obtained in the first comparative example and subjected to the traditional single-layer printing are respectively subjected to performance tests, including resistance, adhesion evaluation and water-washing resistance test of a printed layer, and the measurement results are shown in table 1.
As can be seen from Table 1, the resistance of the intelligent fabric obtained by the invention is obviously lower than that of a comparative material, and the adhesion force of the intelligent fabric with a base material and the water washing resistance test of the intelligent fabric are obviously superior to those of a comparative sample.
TABLE 1 results of the Performance test of various examples and comparative examples
Note:
the test method comprises the following steps:
1. resistance: the prepared conductive ink is coated on the surface of the fabric, and after drying and coagulation, the resistance of the fabric is measured by using a digital four-probe tester.
2. Adhesion force: after the prepared intelligent fabric is dried, the adhesive tape is used for adhering the pattern layer, the adhesive force of the conductive layer is judged according to the ink dropping condition of each sample, and the larger the series (+) is, the better the adhesive force of the pattern layer is.
3. And (3) water washing test: the prepared intelligent fabric is placed in a full-automatic roller washing machine (model: G1012HB 76S) of a Captain, and after a standard washing program is selected for washing for 100 times, the resistance of the intelligent fabric is tested.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
Claims (10)
1. The washing-resistant intelligent fabric coated with the conductive ink comprises a textile fabric substrate layer and is characterized in that a resin protective layer, an adhesive connecting layer and a conductive pattern functional layer are sequentially coated on the surface of the textile fabric substrate layer.
2. The washable smart fabric coated with conductive ink of claim 1, wherein the conductive pattern functional layer is coated with conductive ink, and the conductive ink comprises modified conductive carbon black filler, MXene material, aqueous acrylic latex, aqueous polyurethane, ammonium stearate, isocyanate, and titanium dioxide.
3. The washable intelligent fabric coated with conductive ink as claimed in claim 2, wherein the conductive ink comprises, by weight, 15-40 parts of modified conductive carbon black filler, 2-4 parts of MXene material, 20-30 parts of aqueous acrylic latex, 20-30 parts of aqueous polyurethane, 5-15 parts of ammonium stearate, 1-4 parts of isocyanate, and 5-10 parts of titanium dioxide.
4. The washable smart fabric coated with conductive ink of claim 2, wherein the modified conductive carbon black filler is carbon black modified by sodium dodecyl sulfate, and the MXene material is a nanosheet with Ag loaded on the surface.
5. The washable intelligent fabric coated with conductive ink of claim 1, wherein the textile fabric substrate layer is a composite fabric of one or more of non-woven fabric, knitted fabric, woven fabric and knitted fabric.
6. The washable smart fabric coated with conductive ink of claim 1, wherein the resin protective layer comprises aqueous polyacrylic latex, aqueous polyurethane, ammonium stearate, isocyanate, and titanium dioxide.
7. The conductive ink coated washable smart fabric of claim 6, wherein the resin protective layer comprises, in parts by weight, 25-45 parts of aqueous polyacrylic latex, 25-45 parts of aqueous polyurethane, 10-20 parts of ammonium stearate, 1-4 parts of isocyanate, and 5-10 parts of titanium dioxide.
8. The washable smart fabric of claim 1 coated with a conductive ink, wherein the adhesive tie layer conforms to the pattern of the conductive pattern functional layer.
9. The washable smart fabric of claim 1, wherein the adhesive tie layer is one of a polyacrylate, a vinyl acetate, a neoprene, a polyvinyl chloride, and a polyurethane adhesive.
10. A method of making a conductive ink coated, wash-durable smart fabric of any of claims 1-9, comprising the steps of:
1) Weighing 10 parts of conductive carbon black, placing the conductive carbon black into 10 parts of deionized water, and stirring the conductive carbon black in an ultrasonic oscillation manner at room temperature to obtain a uniform dispersion liquid; continuously adding 5-15 parts of sodium dodecyl sulfate and 5-15 parts of Arabic gum into the dispersion liquid in sequence, and reacting for 1-3 hours under the condition of 40-60 ℃ and ultrasonic oscillation stirring; centrifuging to remove supernatant liquid, and finally obtaining a precipitate which is the required modified conductive carbon black filler;
2) According to the parts by weight, fully mixing and stirring 15-40 parts of the modified conductive carbon black filler, 2-4 parts of MXene material, 20-30 parts of waterborne acrylic latex, 20-30 parts of waterborne polyurethane, 5-15 parts of ammonium stearate, 1-4 parts of isocyanate and 5-10 parts of titanium dioxide, and preparing conductive ink based on the modified conductive carbon black and the MXene for later use;
3) Fully mixing and stirring 25-45 parts of waterborne polyacrylic acid latex, 25-45 parts of waterborne polyurethane, 10-20 parts of ammonium stearate, 1-4 parts of isocyanate and 5-10 parts of titanium dioxide according to parts by weight to prepare the resin protective layer;
4) Uniformly coating the resin protective layer solution prepared in the step 3) on the surface of the textile fabric by using a scraper coating process, controlling the thickness of the textile fabric to be 0.2-2 mm, and placing the coated fabric in a hot air environment at 80-120 ℃ for heat treatment for 15-30 min;
5) Uniformly coating the adhesive on the resin protective layer by using methods such as screen printing or atomized spraying, and the like, and controlling the gram weight of the adhesive to be 0.5-5 g/m 2 ；
6) After the adhesive is coated, standing at normal temperature for 0-10 min, correspondingly coating the conductive ink prepared in the step 2) on an adhesive layer by adopting methods such as silk-screen printing or atomized spraying, wherein the thickness of the conductive functional layer is 0.01-0.5 mm, and placing the coated fabric in a hot air environment of 80-120 ℃ for heat treatment for 15-30 min.
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| CN202211163935.2A CN115897260A (en) | 2022-09-23 | 2022-09-23 | Washable intelligent fabric coated with conductive ink and preparation method thereof |
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| CN202211163935.2A CN115897260A (en) | 2022-09-23 | 2022-09-23 | Washable intelligent fabric coated with conductive ink and preparation method thereof |
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