JP2001011344A - Coating and film formed using the same and their production - Google Patents
Coating and film formed using the same and their productionInfo
- Publication number
- JP2001011344A JP2001011344A JP11221571A JP22157199A JP2001011344A JP 2001011344 A JP2001011344 A JP 2001011344A JP 11221571 A JP11221571 A JP 11221571A JP 22157199 A JP22157199 A JP 22157199A JP 2001011344 A JP2001011344 A JP 2001011344A
- Authority
- JP
- Japan
- Prior art keywords
- paint
- nanotube
- walled
- substrate
- organic polymer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、基体上に単層ナノ
チューブを含有する物質層を形成する際に用いて好適な
塗料とそれを用いて形成された膜及びそれらの製造方法
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paint suitable for use in forming a material layer containing single-walled nanotubes on a substrate, a film formed using the same, and a method for producing the same. .
【０００２】[0002]
【従来の技術】ナノメートル級の微細構造を有する単層
カーボンナノチューブが飯島等により発見されて以来、
この単層カーボンナノチューブの物性が解明されつつあ
るとともに、その応用に向けての研究開発も盛んに行わ
れている。この単層カーボンナノチューブは、平面状の
グラファイト六角網を丸めて筒状としたものであり、チ
ューブ径及びカイラル角度により電子構造が大きく変わ
るために、電気伝導度が金属〜半導体間の値を有し、一
次元電気伝導に近い性質を示すといわれている。2. Description of the Related Art Since the discovery of single-walled carbon nanotubes having nanometer-scale fine structures by Iijima et al.
The physical properties of the single-walled carbon nanotube are being elucidated, and research and development for its application are being actively conducted. This single-walled carbon nanotube is a tube formed by rolling a flat graphite hexagonal mesh into a tube. Since the electronic structure changes greatly depending on the tube diameter and the chiral angle, the electric conductivity has a value between a metal and a semiconductor. However, it is said to exhibit properties close to one-dimensional electric conduction.
【０００３】近年、基体上にカーボンナノチューブを含
む物質層を形成する技術が提案されている（例え、Ｓｃ
ｉｅｎｃｅ，ｖｏｌ．２８２，ｐ．１１０５，（１９９
８）、Ｎａｔｕｒｅ，ｖｏｌ．２８３，ｐ．５１２，
（１９９９）等を参照されたい）。この技術は、化学気
相堆積法（ＣＶＤ（Ｃｈｅｍｉｃａｌ Ｖａｐｏｒ Ｄ
ｅｐｏｓｉｔｉｏｎ）法）により、基板上にカーボンナ
ノチューブを堆積することにより、基板の表面にカーボ
ンナノチューブを含む物質層を形成している。In recent years, techniques for forming a material layer containing carbon nanotubes on a substrate have been proposed (for example, Sc.
issue, vol. 282, p. 1105, (199
8), Nature, vol. 283, p. 512,
(1999), etc.). This technique is based on a chemical vapor deposition (CVD) method.
By depositing carbon nanotubes on the substrate by an evaporation method), a material layer containing carbon nanotubes is formed on the surface of the substrate.
【０００４】[0004]
【発明が解決しようとする課題】ところで、ＣＶＤ法を
用いた技術では、大面積の表面や、非平坦な表面に、カ
ーボンナノチューブを含む物質層を均一に形成すること
が困難であるという問題点があった。また、この技術で
は、プロセス温度や条件、装置などに対する制限が厳し
く、得られたカーボンナノチューブを含む物質層は高価
なものとなってしまうため、カーボンナノチューブを含
む物質層を低コストで形成することができる技術の開発
が望まれていた。However, in the technique using the CVD method, it is difficult to uniformly form a material layer containing carbon nanotubes on a large-area surface or a non-flat surface. was there. In addition, in this technique, since the process temperature, conditions, equipment, and the like are severely restricted, and the obtained material layer containing carbon nanotubes is expensive, it is necessary to form the material layer containing carbon nanotubes at low cost. The development of technology that can do this was desired.
【０００５】本発明は、上記の事情に鑑みてなされたも
のであって、大面積の表面や、非平坦な表面に、単層ナ
ノチューブを含む物質層を均一に形成することができ、
しかも低コスト化が可能な塗料とそれを用いて形成され
た膜及びそれらの製造方法を提供することを目的とす
る。The present invention has been made in view of the above circumstances, and it is possible to uniformly form a material layer containing single-walled nanotubes on a large-area surface or a non-flat surface.
Moreover, it is an object of the present invention to provide a paint that can be reduced in cost, a film formed using the paint, and a method for manufacturing the same.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決するため
に、本発明は次の様な塗料とそれを用いて形成された膜
及びそれらの製造方法を提供した。すなわち、請求項１
記載の塗料は、有機高分子材料を含む溶液中に単層ナノ
チューブを分散させてなることを特徴としている。SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides the following paints, films formed using the same, and methods for producing them. That is, claim 1
The paint described is characterized in that single-wall nanotubes are dispersed in a solution containing an organic polymer material.
【０００７】請求項２記載の塗料は、請求項１記載の塗
料において、前記単層ナノチューブは単層カーボンナノ
チューブであることを特徴としている。According to a second aspect of the present invention, there is provided the coating material according to the first aspect, wherein the single-walled nanotube is a single-walled carbon nanotube.
【０００８】請求項３記載の塗料は、請求項１または２
記載の塗料において、前記溶液は、溶媒に対して前記有
機高分子材料を１〜５０ｖ／ｖ％含有し、該溶液に対し
て前記単層ナノチューブを０．１〜１０ｗ／ｗ％含有す
ることを特徴としている。[0008] The paint according to the third aspect is the first or second aspect.
The coating composition according to claim 1, wherein the solution contains 1 to 50 v / v% of the organic polymer material with respect to a solvent, and 0.1 to 10 w / w% of the single-walled nanotube with respect to the solution. Features.
【０００９】請求項４記載の塗料は、請求項１、２また
は３記載の塗料において、前記有機高分子材料はポリメ
チルメタクリレートであることを特徴としている。According to a fourth aspect of the present invention, there is provided the paint according to the first, second or third aspect, wherein the organic polymer material is polymethyl methacrylate.
【００１０】請求項５記載の膜は、基体上に請求項１、
２、３または４記載の塗料を用いて形成された膜であっ
て、当該膜の主面に前記単層ナノチューブの端部が露出
していることを特徴としている。[0010] The film according to claim 5 is provided on a substrate.
A film formed using the paint described in 2, 3, or 4, wherein an end of the single-walled nanotube is exposed on a main surface of the film.
【００１１】請求項６記載の塗料の製造方法は、有機高
分子材料を含む溶液中に、超音波を用いて単層ナノチュ
ーブを分散させる工程を備えたことを特徴としている。The method for producing a paint according to a sixth aspect is characterized in that the method comprises a step of dispersing the single-walled nanotubes in a solution containing an organic polymer material by using ultrasonic waves.
【００１２】請求項７記載の膜の製造方法は、基体上に
請求項１、２、３または４記載の塗料を用いて膜を形成
する膜の製造方法であって、前記塗料をスプレー法によ
り前記基体上に塗布する工程を備えたことを特徴として
いる。According to a seventh aspect of the present invention, there is provided a method of forming a film on a substrate by using the coating according to the first, second, third or fourth aspect, wherein the coating is formed by spraying. The method is characterized in that a step of coating the substrate is provided.
【００１３】[0013]
【発明の実施の形態】本発明の塗料とそれを用いて形成
された膜及びそれらの製造方法の一実施形態について説
明する。この塗料は、有機高分子材料を含む溶液中に、
単層ナノチューブを均一に分散させたものである。BEST MODE FOR CARRYING OUT THE INVENTION One embodiment of the paint of the present invention, a film formed using the paint and a method for producing the same will be described. This paint, in a solution containing an organic polymer material,
Single-walled nanotubes are uniformly dispersed.
【００１４】単層ナノチューブとしては、以下の方法で
合成された単層カーボンナノチューブが好適に用いられ
る。この単層カーボンナノチューブを合成するには、ま
ず、ターゲットとしてニッケル（Ｎｉ）およびコバルト
（Ｃｏ）を０．３ａｔｍｉｃ％づつ含有する炭素棒を用
意し、このターゲットを電気炉内で、例えば１２００℃
の高温で加熱し、アルゴン（Ａｒ）などの不活性ガスを
流しながら、このターゲットにパルスレーザーを照射す
る。これにより、単層カーボンナノチューブを得ること
ができる。As the single-walled nanotube, a single-walled carbon nanotube synthesized by the following method is preferably used. In order to synthesize this single-walled carbon nanotube, first, a carbon rod containing nickel (Ni) and cobalt (Co) in an amount of 0.3 atomic% is prepared as a target, and the target is placed in an electric furnace at, for example, 1200 ° C.
The target is irradiated with a pulse laser while being heated at a high temperature and flowing an inert gas such as argon (Ar). Thereby, a single-walled carbon nanotube can be obtained.
【００１５】この単層カーボンナノチューブは、上記の
合成法の他、アーク放電法やＣＶＤ法など、他の合成法
により合成したものを用いてもよい。前記溶液として
は、モノクロロベンゼン等の溶媒に対して、ポリメチル
メタクリレート（ＰＭＭＡ）等の有機高分子材料を１〜
５０ｖ／ｖ％含有したものを用い、単層カーボンナノチ
ューブを該溶液に対して０．１〜１０ｗ／ｗ％添加させ
ている。The single-walled carbon nanotube may be synthesized by another synthesis method such as an arc discharge method or a CVD method, in addition to the above synthesis method. As the solution, an organic polymer material such as polymethyl methacrylate (PMMA) is used in a solvent such as monochlorobenzene.
Using a solution containing 50 v / v%, single-walled carbon nanotubes are added in an amount of 0.1 to 10 w / w% to the solution.
【００１６】この塗料をスプレー法を用いて基板上に塗
布することにより、凝集の無い均一な膜を得ることがで
きる。このスプレー法を用いることにより、塗料は微粒
子の状態で基板上に付着し、凝集を最小限に抑制するこ
とが可能になる。図１は、本実施形態の塗料を用いて基
板上に形成した膜を示す走査型電子顕微鏡像（ＳＥＭ
像）であり、同図中、白色の線状の部分が単層カーボン
ナノチューブであり、黒色部分がポリメチルメタクリレ
ート（ＰＭＭＡ）である。この図１によれば、ポリメチ
ルメタクリレート（ＰＭＭＡ）中に単層カーボンナノチ
ューブが分散していることが明かである。By applying this coating material on a substrate by using a spray method, a uniform film without aggregation can be obtained. By using this spray method, the paint adheres to the substrate in the form of fine particles, and aggregation can be suppressed to a minimum. FIG. 1 is a scanning electron microscope image (SEM) showing a film formed on a substrate using the coating material of the present embodiment.
In the figure, white linear portions are single-walled carbon nanotubes, and black portions are polymethyl methacrylate (PMMA). According to FIG. 1, it is clear that single-walled carbon nanotubes are dispersed in polymethyl methacrylate (PMMA).
【００１７】次に、本実施形態の塗料の製造方法につい
て説明する。まず、ナノチューブを合成し、得られたナ
ノチューブをポリメチルメタクリレート溶液に加え撹拌
する。ここでは、上述した合成法により合成した単層カ
ーボンナノチューブを用い、得られた単層カーボンナノ
チューブをポリメチルメタクリレート溶液に加え撹拌し
た。Next, a method for producing the paint of the present embodiment will be described. First, a nanotube is synthesized, and the obtained nanotube is added to a polymethyl methacrylate solution and stirred. Here, using the single-walled carbon nanotube synthesized by the above-described synthesis method, the obtained single-walled carbon nanotube was added to the polymethyl methacrylate solution and stirred.
【００１８】具体的には、ポリメチルメタクリレート液
１０ｍｌに対し、単層カーボンナノチューブを６０ｍｇ
加えた。ポリメチルメタクリレート溶液の溶媒として
は、例えばモノクロロベンゼン等が好適である。このモ
ノクロロベンゼンは、ナノチューブ生成時に発生する炭
素不純物を溶解する性質を有するので、塗料の溶媒とし
て有効に作用する。More specifically, 60 mg of single-walled carbon nanotubes is added to 10 ml of polymethyl methacrylate solution.
added. As a solvent for the polymethyl methacrylate solution, for example, monochlorobenzene is suitable. Since monochlorobenzene has the property of dissolving carbon impurities generated during nanotube formation, it works effectively as a solvent for paints.
【００１９】ここでは、ポリメチルメタクリレートの濃
度を１％とした。なお、粘性の増加、あるいは成膜後の
ナノチューブの密度の低下などを考慮して、ポリメチル
メタクリレートの比率を５０％を限度として増加させて
も良い。この撹拌工程においては、ナノチューブを溶液
中に均一に分散させるためには超音波処理を施すことが
有効である。この超音波処理を用いることによって、絡
まっていたナノチューブが解れ、またナノチューブ生成
時に発生する炭素不純物が溶媒中に溶解し分離する。Here, the concentration of polymethyl methacrylate was 1%. The ratio of polymethyl methacrylate may be increased up to 50% in consideration of an increase in viscosity or a decrease in the density of nanotubes after film formation. In this stirring step, it is effective to perform ultrasonic treatment in order to uniformly disperse the nanotubes in the solution. By using this ultrasonic treatment, the entangled nanotubes are unraveled, and carbon impurities generated at the time of nanotube formation are dissolved in the solvent and separated.
【００２０】超音波処理の条件に特に制限は無いが、ナ
ノチューブを溶液中に均一に分散させるだけの十分な超
音波の強度と処理時間があればよい。超音波処理の条件
の一例として、出力電圧２００Ｗで２時間の処理時間を
挙げることができる。There are no particular restrictions on the conditions of the ultrasonic treatment, but it is sufficient that the ultrasonic intensity and the treatment time are sufficient to uniformly disperse the nanotubes in the solution. As an example of the condition of the ultrasonic treatment, a processing time of 2 hours at an output voltage of 200 W can be cited.
【００２１】本実施形態の塗料によれば、基板等の基体
との密着性に優れたものとなり、大面積の表面や、非平
坦な表面に対しても、単層ナノチューブを含む物質層を
均一に形成することができ、しかも低コスト化を図るこ
とができる。本実施形態の膜によれば、基板等の基体上
に、均一化された単層ナノチューブを含む物質層を形成
することができる。According to the paint of the present embodiment, the adhesion to the substrate such as the substrate is excellent, and the material layer containing the single-walled nanotubes can be uniformly applied to a large-area surface or a non-flat surface. And cost reduction can be achieved. According to the film of the present embodiment, it is possible to form a uniform material layer containing single-walled nanotubes on a substrate such as a substrate.
【００２２】本実施形態の塗料の製造方法によれば、有
機高分子材料を含む溶液中に、単層ナノチューブを均一
に分散させることができ、高均一性の塗料を製造するこ
とができる。本実施形態の膜の製造方法によれば、スプ
レー法を用いて塗料を基板上に塗布するので、塗料が微
粒子の状態で基板上に付着することにより凝集を最小限
に抑制することができ、凝集の無い均一な膜を得ること
ができる。According to the method for producing a coating material of the present embodiment, single-walled nanotubes can be uniformly dispersed in a solution containing an organic polymer material, and a highly uniform coating material can be produced. According to the film manufacturing method of the present embodiment, since the coating material is applied to the substrate by using the spray method, the coating material can be minimized in aggregation by adhering to the substrate in the form of fine particles, A uniform film without aggregation can be obtained.
【００２３】以上、本発明の塗料とそれを用いて形成さ
れた膜及びそれらの製造方法の一実施形態について図面
に基づき説明してきたが、具体的な構成は本実施形態に
限定されるものではなく、本発明の要旨を逸脱しない範
囲で設計の変更等が可能である。例えば、上記実施形態
では、溶媒としてモノクロロベンゼンを、有機高分子材
料としてポリメチルメタクリレート（ＰＭＭＡ）を用い
たが、溶媒及び有機高分子材料は単層ナノチューブを均
一に分散させるもので、かつ基板等の基体に対して密着
性に優れたものであればよく、上記材料に限定されな
い。As mentioned above, one embodiment of the paint of the present invention, a film formed by using the paint and a method for producing the same has been described with reference to the drawings. However, the specific structure is not limited to this embodiment. The design can be changed without departing from the spirit of the present invention. For example, in the above embodiment, monochlorobenzene was used as the solvent, and polymethyl methacrylate (PMMA) was used as the organic polymer material. However, the solvent and the organic polymer material are used to uniformly disperse single-walled nanotubes, What is necessary is just to be the thing excellent in the adhesiveness with respect to a base material, and it is not limited to said material.
【００２４】[0024]
【発明の効果】以上説明した様に、本発明の塗料によれ
ば、有機高分子材料を含む溶液中に単層ナノチューブを
分散させてなることとしたので、凝集に対する立体障害
を起こさせることにより、凝集を阻止することができ、
基板等の基体に対して密着性を高めることができる。し
たがって、大面積の表面や、非平坦な表面に対しても、
単層ナノチューブを含む物質層を均一に形成することが
でき、しかも低コスト化を図ることができる。As described above, according to the coating material of the present invention, single-wall nanotubes are dispersed in a solution containing an organic polymer material. , Can prevent aggregation,
Adhesion to a substrate such as a substrate can be improved. Therefore, even for large area surfaces and non-flat surfaces,
A material layer containing single-walled nanotubes can be formed uniformly, and the cost can be reduced.
【００２５】本発明の膜によれば、当該膜の主面に前記
単層ナノチューブの端部が露出しているので、基板等の
基体上に、均一化された単層ナノチューブを含む物質層
を形成することができる。According to the film of the present invention, since the end portion of the single-walled nanotube is exposed on the main surface of the film, the material layer containing the uniformed single-walled nanotube is formed on a substrate such as a substrate. Can be formed.
【００２６】本発明の塗料の製造方法によれば、有機高
分子材料を含む溶液中に、超音波を用いて単層ナノチュ
ーブを分散させる工程を備えたので、有機高分子材料を
含む溶液中に、単層ナノチューブを均一に分散させるこ
とができ、高均一性の塗料を製造することができる。According to the method for producing a coating material of the present invention, a step of dispersing single-walled nanotubes in a solution containing an organic polymer material by using ultrasonic waves is provided. In addition, the single-walled nanotubes can be uniformly dispersed, and a highly uniform coating material can be manufactured.
【００２７】本発明の膜の製造方法によれば、前記塗料
をスプレー法により前記基体上に塗布する工程を備えた
ので、塗料が微粒子の状態で基板上に付着することによ
り凝集を最小限に抑制することができ、凝集の無い均一
な膜を得ることができる。According to the method for producing a film of the present invention, the step of applying the coating material on the substrate by a spray method is provided, so that the coating material adheres to the substrate in the form of fine particles to minimize aggregation. Thus, a uniform film without aggregation can be obtained.
【図１】 本発明の一実施形態の塗料を用いて基板上に
形成した膜を示す走査型電子微鏡像である。FIG. 1 is a scanning electron microscopic image showing a film formed on a substrate using a coating material according to an embodiment of the present invention.
Claims (7)
チューブを分散させてなることを特徴とする塗料。1. A paint comprising a single-walled nanotube dispersed in a solution containing an organic polymer material.
ノチューブであることを特徴とする請求項１記載の塗
料。2. The coating according to claim 1, wherein the single-walled nanotube is a single-walled carbon nanotube.
子材料を１〜５０ｖ／ｖ％含有し、該溶液に対して前記
単層ナノチューブを０．１〜１０ｗ／ｗ％含有すること
を特徴とする請求項１または２記載の塗料。3. The solution according to claim 1, wherein the organic polymer material is contained in an amount of 1 to 50 v / v% with respect to a solvent, and the single-walled nanotube is contained in an amount of 0.1 to 10 w / w% with respect to the solution. The paint according to claim 1 or 2, wherein
リレートであることを特徴とする請求項１、２または３
記載の塗料。4. The method according to claim 1, wherein the organic polymer material is polymethyl methacrylate.
The paint described.
の塗料を用いて形成された膜であって、当該膜の主面に
前記単層ナノチューブの端部が露出していることを特徴
とする膜。5. A film formed on a substrate using the paint according to claim 1, 2, 3 or 4, wherein an end portion of the single-walled nanotube is exposed on a main surface of the film. A film characterized by the above.
を用いて単層ナノチューブを分散させる工程を備えたこ
とを特徴とする塗料の製造方法。6. A method for producing a paint, comprising a step of dispersing single-walled nanotubes in a solution containing an organic polymer material using ultrasonic waves.
の塗料を用いて膜を形成する膜の製造方法であって、前
記塗料をスプレー法により前記基体上に塗布する工程を
備えたことを特徴とする膜の製造方法。7. A method for producing a film by using the paint according to claim 1, 2, 3 or 4 on a substrate, comprising a step of applying the paint on the substrate by a spray method. A method for producing a film.
Priority Applications (1)
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| JP11221571A JP2001011344A (en) | 1999-06-30 | 1999-06-30 | Coating and film formed using the same and their production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11221571A JP2001011344A (en) | 1999-06-30 | 1999-06-30 | Coating and film formed using the same and their production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001011344A true JP2001011344A (en) | 2001-01-16 |
Family
ID=16768830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11221571A Pending JP2001011344A (en) | 1999-06-30 | 1999-06-30 | Coating and film formed using the same and their production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001011344A (en) |
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