KR101092904B1 - Carbon-Fiber Reinforced Plastics coated with Nano-particles - Google Patents
Carbon-Fiber Reinforced Plastics coated with Nano-particles Download PDFInfo
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- KR101092904B1 KR101092904B1 KR1020090115385A KR20090115385A KR101092904B1 KR 101092904 B1 KR101092904 B1 KR 101092904B1 KR 1020090115385 A KR1020090115385 A KR 1020090115385A KR 20090115385 A KR20090115385 A KR 20090115385A KR 101092904 B1 KR101092904 B1 KR 101092904B1
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- carbon fiber
- fiber reinforced
- tin oxide
- nanoparticles
- ito
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/042—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with carbon fibres
Abstract
The present invention relates to a nanoparticle-coated carbon fiber reinforced plastic composite material, and more particularly, by coating conductive nanoparticles on the surface of the carbon fiber and impregnating the polymer material to give light weight and high electrical conductivity to the body of the aircraft. The present invention relates to a nanoparticle-coated carbon fiber-reinforced plastic composite material that can be used for objects that are damaged by lightning strikes.
In the present invention for achieving the above object in the carbon fiber reinforced plastic composite material (CFRP), by coating the conductive nanoparticles on the surface of the carbon fiber is formed by impregnating the polymer material, the conductive nanoparticles are indium-tin oxide (ITO, Indium Tin Oxide) is characterized in that the nanoparticles.
Carbon Fiber Reinforced Plastics (CFRP), Indium Tin Oxide (ITO), Nanoparticles, Electrical Conductivity, Lightning Damage Prevention
Description
The present invention relates to a nanoparticle-coated carbon fiber reinforced plastic composite material, and more particularly, by coating conductive nanoparticles on the surface of the carbon fiber and impregnating the polymer material to give light weight and high electrical conductivity to the body of the aircraft. The present invention relates to a nanoparticle-coated carbon fiber-reinforced plastic composite material that can be used for objects that are damaged by lightning strikes.
In general, carbon fiber reinforced plastics (CFRP) are increasing year by year from transportation, construction, aerospace / space industry to marine and electrical / electronics industries, not only because of their excellent specific stiffness and strength, but also because of their excellent corrosion resistance and fatigue properties. .
In recent years, the B-787 aircraft is using more than 40% of its fuselage using carbon fiber reinforced plastic (CFRP).
However, when the aircraft is operated, the lightning strikes an average of one to two times a year, and when the lightning strikes the aircraft fuselage, the aircraft fuselage is directly damaged such as spark propagation or local heat generation and indirect damage caused by the electromagnetic field. Will wear.
Therefore, as the damage caused by lightning has become an important issue in terms of safety of the aircraft, researches on the design of the fuselage and the selection of the fuselage material have begun to prevent the damage caused by the lightning strike.
In particular, the use of various fiber-reinforced composite materials in the latest civil aircraft (B-787, A380, A350, etc.) has been increasing, and studies on preventing damage caused by lightning strikes are being actively conducted.
As a result of this study, a carbon mesh reinforced CFRP incorporating a wire mesh for lightning damage prevention as shown in FIG. 1 was developed, and an aluminum wire mesh extended foil ( The wire mesh extended foil (10) was used to improve the electrical conductivity of the fuselage structure to disperse the lightning energy to prevent damage caused by lightning.
However, although the aforementioned wire mesh extended
The present invention has been made to solve the above problems, an object of the present invention by coating the surface of the carbon fiber indium tin oxide (ITO) nanoparticles by spray spraying method to impregnate the polymer material The present invention provides nanoparticle-coated carbon fiber-reinforced plastic composites that improve electrical conductivity and, when used in the aircraft's fuselage, minimize the local damage by dispersing the energy caused by lightning strikes.
In addition, another object of the present invention is to reduce the weight by using a conductive indium tin oxide (ITO) nanoparticles without using a metal material, light weight when used in the aircraft fuselage, lifting force required by light weight This reduction is to provide a nanoparticle-coated carbon fiber reinforced plastic composite material that can reduce fuel consumption.
The present invention for solving this problem;
In the carbon fiber reinforced plastic composite material (CFRP), the conductive nanoparticles are coated on the surface of the carbon fiber to impregnate the polymer material.
Here, the conductive nanoparticles are characterized in that the indium tin oxide (ITO) nanoparticles.
In addition, the indium tin oxide (ITO) nanoparticles may be coated on carbon fiber reinforced plastic (CFRP) by a spray injection method.
According to the present invention having the above-described configuration, the conductive indium tin oxide (ITO) nanoparticles are coated on the surface of the carbon fiber by spray spraying method to impregnate the polymer material to improve the electrical conductivity to the body of the aircraft When used, it is effective to minimize local damage by dispersing the energy caused by lightning.
In addition, the present invention does not use a metal material, the coating by using conductive Indium Tin Oxide (ITO) nanoparticles to reduce the weight when used in the aircraft fuselage light weight, the lifting force required by the light weight is reduced It has the effect of reducing fuel consumption.
Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention. And, it is to be understood that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth.
Figure 2 (a) is a scanning electron microscope (SEM) picture, (b) is a graph showing the results of energy dispersive spectroscopy (EDS), Figure 3 is an indium tin oxide (ITO, Indium Tin Oxide) Figure 4 is a graph showing the electrical conductivity change according to the nanoparticle coating concentration, Figure 4 is a measure of the size of the damage (defect size) by ultrasonic non-destructive test when applying lightning, (a) is the indium tin oxide according to the present invention ( ITO (Indium Tin Oxide) nanoparticles coated carbon fiber reinforced plastic (CFRP) is a measurement picture, (b) is a conventional carbon fiber reinforced plastic (CFRP) measurement picture, Figure 5 is indium tin oxide (ITO) , Indium Tin Oxide (EMI) is a graph showing the results of the evaluation of electromagnetic shielding (EMI) characteristics of the nanoparticle coating specimens, Figure 6 shows the change in tensile strength by the coating of Indium Tin Oxide (ITO) nanoparticles 7 is a graph shown. When applying the aluminum mesh (mesh aluminum) in the carbon fiber reinforced plastic (CFRP) and indium-tin oxide is a view showing the change in weight for the case of applying the nanoparticles (ITO, Indium Tin Oxide).
The present invention relates to a nanoparticle-coated carbon fiber reinforced plastic composite material that is coated with conductive nanoparticles on the surface of the carbon fiber and impregnated in the polymer material to form a carbon fiber reinforced plastic (CFRP), Figure 2 (a), As shown in (b), indium tin oxide (ITO) is used as the conductive nanoparticles.
Here, the nanoparticle-coated carbon fiber-reinforced plastic composite material of the present invention is nano-particles of the indium tin oxide (ITO) is coated by a spray spray method, coating the surface of the carbon fiber by a spray spray method As a result, the indium tin oxide (ITO) nanoparticles are more uniformly coated.
In addition, the polymer material used in the present invention uses a thermosetting epoxy resin mainly used in aircraft among various polymer materials used in conventional carbon fiber reinforced plastics (CFRP).
In addition, indium tin oxide (ITO) is nano-particles coated on the surface of the carbon fiber to increase the electrical conductivity, as well as the conventional wire mesh-formed carbon fiber reinforced plastic (wire mesh-embedded CFRP) and Otherwise, the weight is lighter because no metal layer is formed.
By coating indium tin oxide (ITO) nanoparticles on the surface of the carbon fiber, the changed properties were tested to test the changed properties of the wire mesh-embedded CFRP. Will be described in comparison with).
First, the electrical conductivity characteristics, as shown in Figure 3, the concentration of the indium tin oxide (ITO, Indium Tin Oxide) nanoparticles (20%, 30%, 40%, respectively, 3 seconds each by spray injection method) , Electrical conductivity was measured for the coated specimen sprayed for 5 seconds.
In each measurement, when the concentration of indium tin oxide (ITO) nanoparticles was 20%, the electrical conductivity was measured as 21000 (S / m) and 33000 (S / m). When the concentration of Indium Tin Oxide (ITO) nanoparticles is 30%, the electrical conductivity was measured as 24000 (S / m) and 34000 (S / m), and Indium Tin Oxide (ITO) nano The electrical conductivity when the concentration of the particles was 40% was measured at 102000 (S / m) and 89000 (S / m).
Here, the electrical conductivity of the carbon fiber reinforced plastic (CFRP) of the uncoated state did not show a significant difference from the case of coating at a concentration of 20% and a concentration of 30% at 21000 (S / m).
However, when Indium Tin Oxide (ITO) nanoparticles were coated at a concentration of 40%, it was measured at a maximum of 102000 (S / m), compared with uncoated carbon fiber reinforced plastics (CFRP). The electrical conductivity of wire mesh-embedded CFRP with 5 times higher electrical conductivity and wire mesh used as a conventional aircraft material is 73000 (S / m). Can be.
This increase in electrical conductivity can minimize damage caused by lightning, which is one of the biggest problems of aircraft operation when used as a material for aircraft.
In other words, while operating an aircraft, it is very important to be prepared for lightning strikes a year or two, so the preparation for lightning strikes is very important. Looking at the damage caused by lightning strikes, direct damage such as spark propagation or local heat generation and indirect damage caused by electromagnetic fields There is damage.
Among them, spark propagation or local heat generation can reduce the damage by increasing the electrical conductivity of the aircraft's fuselage.In the case of lightning strikes, when lightning strikes the surface, the electrical energy of the surface can be dissipated quickly. Damage can be minimized.
Next, the carbon fiber reinforced plastic (CFRP) coated with indium tin oxide (ITO) nanoparticles according to the present invention and the conventional carbon fiber reinforced plastic (CFRP) 1 kA (current), 100 kV (voltage) The test was performed to apply artificial lightning.
Through the above test, when the actual lightning strikes, the degree of damage of the material can be known. In order to measure the damage, the internal damage of the specimen was measured by ultrasonic non-destructive test.
As a result, as shown in Figure 4 (a) is a case of applying a lightning strike to the carbon fiber reinforced plastic (CFRP) coated with indium tin oxide (ITO, nanoparticles) (ITO) nanoparticles, the degree of damage is minimal , (b) is a case where a lightning strike is applied to the existing carbon fiber reinforced plastic (CFRP) it can be seen that the damage degree is larger than (a).
In other words, carbon fiber reinforced plastic (CFRP) coated with Indium Tin Oxide (ITO) nanoparticles according to the present invention is confirmed to reduce the local damage by effectively dispersing lightning energy by improving electrical conductivity Can be.
Next, the electromagnetic shielding (EMI) characteristics were tested, and the electromagnetic shielding (EMI) characteristics prevent electromagnetic waves generated by lightning strikes, so that sensitive electronic devices installed inside the aircraft are damaged or malfunctioned by electromagnetic waves. As an important feature to prevent this, the amount of electromagnetic waves that can be blocked depends on how stable the internal electronics can be.
In this test, as shown in FIG. 5, a control specimen (conventional carbon fiber reinforced plastic, CFRP, 120) and carbon fiber reinforced plastic coated with indium tin oxide (ITO) nanoparticles according to the present invention ( Electromagnetic interference (EMI) characteristics of the
The result is a carbon fiber reinforced plastic (CFRP) coated with indium tin oxide (ITO) nanoparticles according to the present invention, as shown in the data of electromagnetic shielding (EMI) characteristics shown in FIG. It can be seen that the electromagnetic shielding (EMI) characteristics are superior because the amount of electromagnetic waves blocked by 110 is significantly greater than the amount of electromagnetic waves blocked by conventional carbon fiber reinforced plastics (CFRP, 120).
Therefore, the electromagnetic shielding (EMI) characteristics of carbon fiber reinforced plastics (CFRP, 110) coated with indium tin oxide (ITO) nanoparticles according to the present invention are extremely high to shield and absorb electromagnetic waves caused by lightning strikes. It can be seen that the electronic devices installed inside the aircraft can be more stably protected.
Next, since carbon fiber reinforced plastic (CFRP), which is used as a machine structure, is important not only for electrical conductivity, but also for tensile strength, carbon fiber reinforced plastic (CFRP) and indium tin oxide (ITO) nanoparticles Tensile tests of carbon fiber reinforced plastics (CFRP) coated at 20% and 40% concentrations were carried out.
As a result, as shown in FIG. 6, the tensile strength of carbon fiber reinforced plastic (CFRP) coated with indium tin oxide (ITO) nanoparticles is tensile when compared with conventional carbon fiber reinforced plastic (CFRP). The decrease in strength was found to be within the margin of error, and it was demonstrated that coating the indium tin oxide (ITO) nanoparticles improved the electrical conductivity but not the tensile strength.
Next, when the electrical conductivity is improved by using a conventional aluminum mesh (also referred to as aluminum mesh, wire mesh or extended foil) and by coating the indium tin oxide (ITO) nanoparticles of the present invention The change in weight was measured when the electrical conductivity was improved.
As a result, as shown in Figure 7, the change in weight measured for the same size of the specimen, the weight increase of 6.3% when using a conventional aluminum mesh (aluminum mesh), the indium tin oxide of the present invention In the case of using (ITO, Indium Tin Oxide) nanoparticles, there is only about 0.9% of weight increase, and it can be seen that there is a significant reduction in weight compared to the conventional.
In view of the efficiency of the aircraft, such a weight reduction reduces the weight of the aircraft's fuselage to increase the efficiency of the fuel, so that more passengers can be transported away, thereby improving the performance of the aircraft.
As described above, the carbon fiber reinforced plastic (CFRP) coated with the indium tin oxide (ITO) nanoparticles of the present invention may increase electrical conductivity as well as reduce weight without lowering tensile strength as compared with the conventional art. Since it is possible to minimize the damage caused by lightning strikes, and to reduce the weight of the aircraft it is possible to manufacture a better aircraft, furthermore, compared to the conventional manufacturing process is simple, and the manufacturing cost is also low effect.
Although the preferred embodiments of the present invention have been described above, the scope of the present invention is not limited thereto, and the scope of the present invention extends to the scope of the present invention to those which are substantially equivalent to the embodiments of the present invention. Various modifications can be made by those skilled in the art without departing from the scope of the present invention.
The present invention relates to a nanoparticle-coated carbon fiber reinforced plastic composite material, and more particularly, by coating conductive nanoparticles on the surface of the carbon fiber and impregnating the polymer material to give light weight and high electrical conductivity to the body of the aircraft. The present invention relates to a nanoparticle-coated carbon fiber-reinforced plastic composite material that can be used for objects that are damaged by lightning strikes.
FIG. 1 is a conceptual diagram of a wire mesh-embedded CFRP in which a wire mesh for preventing lightning damage is embedded.
Figure 2 (a) is a scanning electron microscope (SEM) picture, (b) is a graph showing the results of the energy dispersive spectroscopy (EDS) test.
3 is a graph showing the change in conductivity according to the coating concentration of Indium Tin Oxide (ITO) nanoparticles.
Figure 4 is a measure of the size of the damage (defect size) through ultrasonic non-destructive test when lightning is applied, (a) is reinforced carbon fiber coated with indium tin oxide (ITO) nanoparticles according to the present invention It is a measurement photograph of plastic (CFRP), (b) is a measurement photograph of a conventional carbon fiber reinforced plastic (CFRP).
FIG. 5 is a graph illustrating evaluation results of electro magnetic interference (EMI) characteristics of an indium tin oxide (ITO) nanoparticle coating specimen.
FIG. 6 is a graph showing changes in tensile strength by coating of indium tin oxide (ITO) nanoparticles.
FIG. 7 is a view showing weight change of the case of applying an aluminum mesh to carbon fiber reinforced plastic (CFRP) and a case of applying indium tin oxide (ITO) nanoparticles.
<< Explanation of symbols for main part of drawing >>
10: extended metal foil 20: carbon fiber reinforced plastic
110: indium-tin oxide (ITO) nanoparticle coating specimen
120: control specimen 130: the original signal
Claims (3)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020090115385A KR101092904B1 (en) | 2009-11-26 | 2009-11-26 | Carbon-Fiber Reinforced Plastics coated with Nano-particles |
| PCT/KR2010/007952 WO2011065694A2 (en) | 2009-11-26 | 2010-11-11 | Carbon fiber reinforced plastic composite material coated with nanoparticles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020090115385A KR101092904B1 (en) | 2009-11-26 | 2009-11-26 | Carbon-Fiber Reinforced Plastics coated with Nano-particles |
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| Publication Number | Publication Date |
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| KR20110058554A KR20110058554A (en) | 2011-06-01 |
| KR101092904B1 true KR101092904B1 (en) | 2011-12-12 |
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| KR1020090115385A KR101092904B1 (en) | 2009-11-26 | 2009-11-26 | Carbon-Fiber Reinforced Plastics coated with Nano-particles |
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| WO (1) | WO2011065694A2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160108068A (en) | 2015-03-06 | 2016-09-19 | 도레이첨단소재 주식회사 | Electrical conductive fiber prepreg and manufacturing method and manufacturing device of the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2014025360A1 (en) | 2012-08-10 | 2014-02-13 | Empire Technology Development Llc | Microwave dipolar heating of energetic polymers for carbon fiber-matrix separation |
| CN102875805B (en) * | 2012-09-28 | 2014-07-02 | 浙江理工大学 | Three-dimensional graphene-poly dopamine-gold nanoparticle composite material and preparation method thereof |
| EP3782832B1 (en) | 2019-08-22 | 2024-03-13 | Motherson Innovations Company Limited | Trim component for cladding an interior space of a means of passenger transport |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101074779B1 (en) | 2005-12-29 | 2011-10-19 | 삼성에스디아이 주식회사 | Semiconductor electrode using carbon nanotube, preparaton method thereof and solar cell comprising the same |
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| KR100558073B1 (en) * | 2003-01-24 | 2006-03-10 | 한국화학연구원 | A method for preparing carbon fiber reinforced composites having an improved mechanical property |
| KR100706651B1 (en) * | 2006-12-22 | 2007-04-13 | 제일모직주식회사 | Electroconductive thermoplastic resin composition and plastic article |
| KR101298570B1 (en) * | 2006-12-29 | 2013-08-22 | 주식회사 피앤아이 | Plastic master batch including iron nano-particle and container using the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101074779B1 (en) | 2005-12-29 | 2011-10-19 | 삼성에스디아이 주식회사 | Semiconductor electrode using carbon nanotube, preparaton method thereof and solar cell comprising the same |
Non-Patent Citations (1)
| Title |
|---|
| 하민석 외 2명, 전도성 나노입자 코팅에 의한 탄소섬유 복합재료의 전기전도도 향상, 2009년도 춘계학술대회 논문집, 한국정밀공학회 2009.6, page(s): 141-142 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160108068A (en) | 2015-03-06 | 2016-09-19 | 도레이첨단소재 주식회사 | Electrical conductive fiber prepreg and manufacturing method and manufacturing device of the same |
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| Publication number | Publication date |
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| WO2011065694A3 (en) | 2011-11-03 |
| WO2011065694A2 (en) | 2011-06-03 |
| KR20110058554A (en) | 2011-06-01 |
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