CN111705514A - Single-layer coating carbon fiber fabric for electromagnetic shielding field and preparation method thereof - Google Patents
Single-layer coating carbon fiber fabric for electromagnetic shielding field and preparation method thereof Download PDFInfo
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- CN111705514A CN111705514A CN202010502637.6A CN202010502637A CN111705514A CN 111705514 A CN111705514 A CN 111705514A CN 202010502637 A CN202010502637 A CN 202010502637A CN 111705514 A CN111705514 A CN 111705514A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2201/00—Chemical constitution of the fibres, threads or yarns
- D06N2201/08—Inorganic fibres
- D06N2201/087—Carbon fibres
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/04—Properties of the materials having electrical or magnetic properties
- D06N2209/048—Electromagnetic interference shielding
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion 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 a single-layer shielding coating fabric. Selecting a carbon fiber fabric as a base fabric, and finishing graphite, graphene and nickel powder on the surface of the carbon fiber fabric by using a fabric coating method. The preparation steps are as follows: (1) preparing base cloth: and flatly fixing the base cloth with proper size on a needle board frame of the coating machine. (2) Preparation of the coating: a, weighing a certain amount of graphite, graphene, nickel powder and polyurethane resin. b setting the stirrer to stir the resin at a low speed, and simultaneously slowly adding a small amount of functional particles. After all the components are added, stirring at high speed for 40 min. c, measuring the viscosity of the coating, and if the viscosity of the coating does not reach the specified range of 20000 mPas-40000 mPas, adding a small amount of the thickening agent for a plurality of times. (3) Preparation of coated fabric: setting the thickness of the coating to be 0.8-1.2 mm, coating the coating on a coating machine to perform coating finishing on the base cloth, placing the base cloth in an oven, drying the base cloth for 10min at the temperature of 80-100 ℃, taking out the base cloth and placing the base cloth at room temperature for curing for 24 h. The material has excellent electromagnetic shielding performance after being tested.
Description
Technical Field
The invention belongs to the technical field of electromagnetic shielding fabrics, and particularly relates to a preparation method of a single-layer shielding coating carbon fiber fabric.
Background
With the rapid development of national economy and telecommunication science and technology, various electronic communication devices are increasingly popularized, and when the energy of electromagnetic waves emitted by the devices during operation exceeds the standard, electromagnetic pollution can be caused, so that the normal operation of the electronic communication devices can be interfered, and the health and living environment of human beings can be adversely affected. Therefore, attention is paid to and the problem of electromagnetic pollution is solved, and the shielding material as a key material for the development of shielding technology is gradually extended from the initial military protection and stealth to the aspects of human body electromagnetic safety protection, electromagnetic interference prevention electronic equipment, information confidentiality and the like.
The graphite has excellent conductivity which can reach 2.5 × 10 at normal temperature3S/cm, a conductive network can be formed in the polymer matrix, and charge carriers move through a plurality of conductive paths, so that the electromagnetic wave shielding material has a good shielding effect. Graphene is a two-dimensional hexagonal honeycomb crystal composed of a single layer of carbon atoms, and pi electrons which are not bonded freely move in a two-dimensional plane, so that the graphene has excellent conductivity and shielding effect. The nickel powder has better conductivity and magnetic permeability, and is an ideal shielding material.
The carbon fiber belongs to carbon materials, has low density, high strength, good heat conduction, high modulus ratio and controllable resistance, and is widely used as a shielding composite material. However, the research on carbon fiber materials is shallow at present, most of the researches are focused on the relationship between resin matrix composite materials (carbon fibers are used as fillers) or carbon fiber arrangement modes and electromagnetic shielding performance, and the preparation of the electromagnetic shielding material by coating functional particles on carbon fiber fabrics by using a coating process is less.
Disclosure of Invention
The invention provides a single-layer coating fabric for solving the technical problems and a preparation method thereof, which are used in the field of electromagnetic shielding.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of a single-layer shielding coating fabric comprises the following steps:
(1) preparing base cloth: preparing carbon fiber cloth with proper size according to requirements, flatly fixing the carbon fiber cloth on a needle board frame of a coating machine, and adjusting the carbon fiber cloth to proper tension.
(2) Preparation of the coating: a weigh a certain amount of functional particles (graphite, graphene and nickel powder in this study) and polyurethane resin. b, holding and fixing the beaker filled with the polyurethane resin on a stirrer, setting the stirrer to operate at low speed (about 600rad/min) for stirring the resin, slowly adding a small amount of functional particles into the resin in the process, and adding a certain amount of thickening agent after the functional particles are completely added to obtain the material. The stirrer was then set to run at high speed (about 2000rad/min) and the above materials were thoroughly stirred for 40min to ensure uniform mixing. c, measuring the viscosity of the uniformly stirred coating obtained in the step b, and if the viscosity does not reach the specified range of 20000mPa & s-40000 mPa & s, adding a small amount of thickening agent for many times under the low-speed (about 600rad/min) stirring state until the viscosity reaches the standard to obtain the required coating.
(3) Preparation of coated fabric: setting the thickness of the coating to be 0.8-1.2 mm, carrying out coating finishing on the base fabric prepared in the step (1) by the coating prepared in the step (2) on a coating machine, placing the coated fabric in an oven, drying for 10min at 80-100 ℃, taking out, and curing at room temperature for 24 h.
The base cloth is a carbon fiber fabric.
The content of the graphite functional particles (relative to the mass percent of polyurethane) is 20-40%, and the viscosity of the obtained coating is 20000 mPa-s-40000 mPa-s.
The content of the graphene functional particles (relative to the mass percent of polyurethane) is 20-40%, and the viscosity of the obtained coating is 20000 mPa-s-40000 mPa-s.
The content of the nickel powder functional particles (relative to the mass percent of polyurethane) is 20-40%, and the viscosity of the obtained coating is 20000 mPa-s-40000 mPa-s.
The invention has the advantages that:
when the carbon fiber is singly used as a shielding material, the defects of low magnetic conductivity, high dielectric constant and the like can exist, and different types of functional particles are coated on the carbon fiber, so that the excellent electromagnetic shielding effect of the carbon fiber is fully exerted, the integral magnetic conductivity and shielding effect are improved, and reference is provided for developing the fabric of the electromagnetic protective clothing.
Drawings
FIG. 1 is a flow chart of the preparation of a single layer barrier coated fabric of the present invention.
Fig. 2 is a graph showing the screening performance of the single-layer barrier coated fabric prepared in the example.
Detailed Description
The invention provides a preparation method of a single-layer shielding coating fabric, and the invention is further explained by combining a specific embodiment.
Example 1
A preparation method of a single-layer shielding coating fabric comprises the following steps:
(1) preparing base cloth: preparing cloth with proper size according to requirements, flatly fixing the cloth on a needle plate frame of a coating machine, and adjusting the cloth to proper tension.
(2) Preparation of the coating: a weighing a certain amount of graphite and polyurethane resin. b, holding and fixing the beaker filled with the polyurethane resin on a stirrer, setting the stirrer to operate at low speed (about 600rad/min) for stirring the resin, slowly adding a small amount of functional particles into the resin in the process, and adding a certain amount of thickening agent after the functional particles are completely added to obtain the material. The stirrer was then set to run at high speed (about 2000rad/min) and the above materials were thoroughly stirred for 40min to ensure uniform mixing. c, measuring the viscosity of the uniformly stirred coating obtained in the step b, and if the viscosity does not reach the specified range of 20000mPa & s-40000 mPa & s, adding a small amount of thickening agent for many times under the low-speed (about 600rad/min) stirring state until the viscosity reaches the standard to obtain the required coating.
(3) Preparation of coated fabric: setting the thickness of the coating to be 1.0mm, carrying out coating finishing on the base cloth prepared in the step (1) by the coating prepared in the step (2) on a coating machine, placing the coated fabric in an oven, drying for 10min at 80 ℃, taking out, and curing for 24h at room temperature.
The base cloth is a carbon fiber fabric.
The content of the graphite functional particles (relative to the mass percent of polyurethane) is 30 percent, and the viscosity of the obtained coating is 33705mPa & s.
Example 2
A preparation method of a single-layer shielding coating fabric comprises the following steps:
(1) preparing base cloth: preparing cloth with proper size according to requirements, flatly fixing the cloth on a needle plate frame of a coating machine, and adjusting the cloth to proper tension.
(2) Preparation of the coating: a, weighing certain amounts of graphene and polyurethane resin. b, holding and fixing the beaker filled with the polyurethane resin on a stirrer, setting the stirrer to operate at low speed (about 600rad/min) for stirring the resin, slowly adding a small amount of functional particles into the resin in the process, and adding a certain amount of thickening agent after the functional particles are completely added to obtain the material. The stirrer was then set to run at high speed (about 2000rad/min) and the above materials were thoroughly stirred for 40min to ensure uniform mixing. c, measuring the viscosity of the uniformly stirred coating obtained in the step b, and if the viscosity does not reach the specified range of 20000mPa & s-40000 mPa & s, adding a small amount of thickening agent for many times under the low-speed (about 600rad/min) stirring state until the viscosity reaches the standard to obtain the required coating.
(3) Preparation of coated fabric: setting the thickness of the coating to be 1.0mm, carrying out coating finishing on the base cloth prepared in the step (1) by the coating prepared in the step (2) on a coating machine, placing the coated fabric in an oven, drying for 10min at 80 ℃, taking out, and curing for 24h at room temperature.
The base cloth is a carbon fiber fabric.
The content of the graphene functional particles (relative to the mass percent of polyurethane) is 30%, and the viscosity of the obtained coating is 36587mPa & s.
Example 3
A preparation method of a single-layer shielding coating fabric comprises the following steps:
(1) preparing base cloth: preparing cloth with proper size according to requirements, flatly fixing the cloth on a needle plate frame of a coating machine, and adjusting the cloth to proper tension.
(2) Preparation of the coating: a weigh certain amount of nickel powder and polyurethane resin. b, holding and fixing the beaker filled with the polyurethane resin on a stirrer, setting the stirrer to operate at low speed (about 600rad/min) for stirring the resin, slowly adding a small amount of functional particles into the resin in the process, and adding a certain amount of thickening agent after the functional particles are completely added to obtain the material. The stirrer was then set to run at high speed (about 2000rad/min) and the above materials were thoroughly stirred for 40min to ensure uniform mixing. c, measuring the viscosity of the uniformly stirred coating obtained in the step b, and if the viscosity does not reach the specified range of 20000mPa & s-40000 mPa & s, adding a small amount of thickening agent for many times under the low-speed (about 600rad/min) stirring state until the viscosity reaches the standard to obtain the required coating.
(3) Preparation of coated fabric: setting the thickness of the coating to be 1.0mm, carrying out coating finishing on the base cloth prepared in the step (1) by the coating prepared in the step (2) on a coating machine, placing the coated fabric in an oven, drying for 10min at 80 ℃, taking out, and curing for 24h at room temperature.
The base cloth is a carbon fiber fabric.
The content of the nickel powder functional particles (relative to the mass percent of polyurethane) is 30 percent, and the viscosity of the obtained coating is 32609mPa & s.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (6)
1. A preparation method of a single-layer shielding coating carbon fiber fabric is characterized by comprising the following steps:
(1) preparing base cloth: preparing cloth with proper size according to requirements, flatly fixing the cloth on a needle plate frame of a coating machine, and adjusting the cloth to proper tension.
(2) Preparation of the coating: a weigh a certain amount of functional particles (graphite, graphene and nickel powder in this study) and polyurethane resin. b, holding and fixing the beaker filled with the polyurethane resin on a stirrer, setting the stirrer to operate at low speed (about 600rad/min) for stirring the resin, slowly adding a small amount of functional particles into the resin in the process, and adding a certain amount of thickening agent after the functional particles are completely added to obtain the material. The stirrer was then set to run at high speed (about 2000rad/min) and the above materials were thoroughly stirred for 40min to ensure uniform mixing. c, measuring the viscosity of the uniformly stirred coating obtained in the step b, and if the viscosity does not reach the specified range of 20000mPa & s-40000 mPa & s, adding a small amount of thickening agent for many times under the low-speed (about 600rad/min) stirring state until the viscosity reaches the standard to obtain the required coating.
(3) Preparation of coated fabric: setting the thickness of the coating to be 0.8-1.2 mm, carrying out coating finishing on the base fabric prepared in the step (1) by the coating prepared in the step (2) on a coating machine, placing the coated fabric in an oven, drying for 10min at 80-100 ℃, taking out, and curing at room temperature for 24 h.
2. The single layer barrier coated fabric of claim 1, wherein the base fabric is a carbon fiber fabric.
3. The single-layer barrier-coated fabric according to claim 1, wherein the content (in mass% relative to the polyurethane) of the graphite functional particles is 20% to 40%, and the viscosity of the obtained coating is 20000 mPa-s to 40000 mPa-s.
4. The single-layer barrier-coated fabric according to claim 1, wherein the content (mass percentage of the graphene functional particles relative to the polyurethane) is 20% to 40%, and the viscosity of the obtained coating is 20000 mPa-s to 40000 mPa-s.
5. The single-layer barrier-coated fabric according to claim 1, wherein the content (mass percentage relative to polyurethane) of the nickel powder functional particles is 20% to 40%, and the viscosity of the obtained coating is 20000 mPa-s to 40000 mPa-s.
6. A single layer barrier coated fabric produced by the method of making a single layer barrier coated fabric of any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010502637.6A CN111705514A (en) | 2020-06-05 | 2020-06-05 | Single-layer coating carbon fiber fabric for electromagnetic shielding field and preparation method thereof |
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| CN202010502637.6A CN111705514A (en) | 2020-06-05 | 2020-06-05 | Single-layer coating carbon fiber fabric for electromagnetic shielding field and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112227077A (en) * | 2020-10-10 | 2021-01-15 | 天津工业大学 | Metal iron powder doped graphene electromagnetic protection composite coating fabric and preparation method thereof |
| CN112900077A (en) * | 2021-03-29 | 2021-06-04 | 吉林大学 | Preparation method of graphene oxide/carbon fiber fabric with wave-absorbing property |
| CN113043703A (en) * | 2021-04-08 | 2021-06-29 | 天津工业大学 | Preparation method of polyurethane/ferroferric oxide/fibrofelt flexible noise reduction composite material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112227077A (en) * | 2020-10-10 | 2021-01-15 | 天津工业大学 | Metal iron powder doped graphene electromagnetic protection composite coating fabric and preparation method thereof |
| CN112900077A (en) * | 2021-03-29 | 2021-06-04 | 吉林大学 | Preparation method of graphene oxide/carbon fiber fabric with wave-absorbing property |
| CN113043703A (en) * | 2021-04-08 | 2021-06-29 | 天津工业大学 | Preparation method of polyurethane/ferroferric oxide/fibrofelt flexible noise reduction composite material |
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