JP6341885B2 - 発熱体 - Google Patents
発熱体 Download PDFInfo
- Publication number
- JP6341885B2 JP6341885B2 JP2015117499A JP2015117499A JP6341885B2 JP 6341885 B2 JP6341885 B2 JP 6341885B2 JP 2015117499 A JP2015117499 A JP 2015117499A JP 2015117499 A JP2015117499 A JP 2015117499A JP 6341885 B2 JP6341885 B2 JP 6341885B2
- Authority
- JP
- Japan
- Prior art keywords
- heating element
- dispersion
- electrodes
- surfactant
- manufactured
- 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.)
- Expired - Fee Related
Links
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 41
- 239000006185 dispersion Substances 0.000 claims description 31
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 29
- 239000002245 particle Substances 0.000 claims description 27
- 239000010419 fine particle Substances 0.000 claims description 20
- 239000004094 surface-active agent Substances 0.000 claims description 20
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 18
- 229910052709 silver Inorganic materials 0.000 claims description 18
- 239000004332 silver Substances 0.000 claims description 18
- 239000002904 solvent Substances 0.000 claims description 17
- 239000000758 substrate Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 4
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- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 2
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- 125000002147 dimethylamino group Chemical group [H]C([H])([H])N(*)C([H])([H])[H] 0.000 description 2
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- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 1
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- SYELZBGXAIXKHU-UHFFFAOYSA-N dodecyldimethylamine N-oxide Chemical compound CCCCCCCCCCCC[N+](C)(C)[O-] SYELZBGXAIXKHU-UHFFFAOYSA-N 0.000 description 1
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- HEBKCHPVOIAQTA-SCDXWVJYSA-N xylitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)CO HEBKCHPVOIAQTA-SCDXWVJYSA-N 0.000 description 1
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- UHVMMEOXYDMDKI-JKYCWFKZSA-L zinc;1-(5-cyanopyridin-2-yl)-3-[(1s,2s)-2-(6-fluoro-2-hydroxy-3-propanoylphenyl)cyclopropyl]urea;diacetate Chemical compound [Zn+2].CC([O-])=O.CC([O-])=O.CCC(=O)C1=CC=C(F)C([C@H]2[C@H](C2)NC(=O)NC=2N=CC(=CC=2)C#N)=C1O UHVMMEOXYDMDKI-JKYCWFKZSA-L 0.000 description 1
Landscapes
- Surface Heating Bodies (AREA)
- Resistance Heating (AREA)
Description
本発明の発熱体においては、前記分散液が界面活性剤を含有することが好ましい。
また、本発明の発熱体においては、前記分散液の前記溶媒として、水を用いることが好ましい。
また、本発明の発熱体においては、前記多孔質絶縁基材として面状のものを用いると共に、発熱体の片面または両面に電極を設けることが好ましい。
本発明の第1の特徴点は、CNTを溶媒に分散した分散液を、多孔質絶縁基材に塗布・含浸し、乾燥して発熱体とすることである。このように、CNTを溶媒に分散した分散液を多孔質絶縁基材に直接塗布・含浸することにより、発熱体を経済的・効率的に製造することができる。
また、本発明においては、CNTとして、タール分が0.5%以下のものを用いることが好ましい。タールなどの不純物が少ないCNTを用いれば、発熱体を製造もしくは加熱した際に、揮発性有機化合物(VOC)の放出を低減させることができるため、好ましい。
また、CNTと導電性微粒子との混合比率は、発熱体の体積抵抗率、所望する発熱量等によって任意に選定できる。
塗装手段としては、例えば、滴下法、ディッピング法、エアースプレー塗装、エアレススプレー塗装、低圧霧化スプレー塗装、バーコーダー法による塗装、スピンコーターを用いた塗装等が挙げられる。
これらの塗布手段のうち、多孔質絶縁基材の所定箇所に分散液を簡単に塗布することができる点から、スクリーン印刷が好ましい。
電極は、銀ペースト等の一般的な電極材料を、発熱体に印刷することにより設けるのが好ましい。電極の形成は、多孔質絶縁基材に分散液を塗布・含浸させ、乾燥させた後に行ってもよいし、多孔質絶縁基材上に分散液を塗布する前に行ってもよい。
電極としては、櫛形電極が好ましい。正極及び負極となる1組の櫛形電極を多孔質絶縁基材の片面だけに設ける場合には、正極となる櫛形電極の歯と、負極となる櫛形電極の歯とは、交互に配置される。また、正極及び負極となる1組の櫛形電極を、多孔質絶縁基材のそれぞれ別の表面に設ける場合には、両面で千鳥状に交互にずらしてもよいし、ずらさずに揃えてもよい。
これらの水和安定剤は、単独又は二種以上組み合わせて使用できる。これらの水和安定剤のうち、グリセリンなどの多価アルコールなどが汎用される。
この分散液を、市販のA4サイズのコピー用紙(210mm×297mm)の片面に、スクリーン印刷により均一に塗布し(塗布量50g/m2)、乾燥して、発熱体を製造した。
このようにして得られたA4サイズの面状発熱体の2つの短辺全体にわたって、それぞれ、正極及び負極を設けて、発熱体の電極間抵抗値を測定したところ、発熱体の電極間抵抗値は28Ωであった。
この発熱体の電極間抵抗値は29Ωであった。
この発熱体の電極間抵抗値は34Ωであった。
この発熱体の電極間抵抗値は32Ωであった。
この発熱体の電極間抵抗値は69Ωであった。
この発熱体の電極間抵抗値は52Ωであった。
この発熱体の電極間抵抗値は51Ωであった。
この発熱体の電極間抵抗値は54Ωであった。
この発熱体の電極間抵抗値は55Ωであった。
この発熱体の電極間抵抗値は101Ωであった。
この発熱体の電極間抵抗値は38Ωであった。
この発熱体の電極間抵抗値は39Ωであった。
この発熱体の電極間抵抗値は42Ωであった。
この発熱体の電極間抵抗値は41Ωであった。
この発熱体の電極間抵抗値は77Ωであった。
この発熱体の電極間抵抗値は31Ωであった。
この発熱体の電極間抵抗値は32Ωであった。
この発熱体の電極間抵抗値は37Ωであった。
この発熱体の電極間抵抗値は35Ωであった。
この発熱体の電極間抵抗値は71Ωであった。
Claims (6)
- カーボンナノチューブ及び平均粒径が10nm〜100μmである金属系物質の導電性微粒子を溶媒に分散した分散液を、多孔質絶縁基材に塗布・含浸した後、乾燥して得られる発熱体。
- 前記金属系物質が、銀、金、銅、クロム、ニッケル、鉄、マグネシウム、アルミニウム、白金、亜鉛、マンガン、タングステン、ステンレスを含むものであることを特徴とする請求項1に記載の発熱体。
- 前記導電性微粒子が、粒子径20〜60nmの銀粒子または粒子径20〜50nmの酸化亜鉛粒子を含むことを特徴とする請求項1に記載の発熱体。
- 前記分散液が、界面活性剤を含有することを特徴とする請求項1〜3のいずれかに記載の発熱体。
- 前記溶媒が、水であることを特徴とする請求項1〜4のいずれかに記載の発熱体。
- 前記多孔質絶縁基材が面状であり、発熱体の片面または両面に電極が設けられていることを特徴とする請求項1〜5のいずれかに記載の発熱体。
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