JP2009269214A - 多孔質シートおよびその製造方法、並びに断熱シート - Google Patents
多孔質シートおよびその製造方法、並びに断熱シート Download PDFInfo
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Abstract
【解決手段】(I)ポリテトラフルオロエチレンとカーボン粒子とを含むシート状成形体を複数準備する工程と、(II)複数の前記シート状成形体を重ね合わせて圧延する工程と、を含む多孔質シートの製造方法。工程(I)と工程(II)とが交互に繰り返されてもよい。また、シート状成形体として、例えば、ポリテトラフルオロエチレンとカーボン粒子とを含む混合物をシート状に成形した母シートを用いることもできるし、母シートを複数重ね合わせて圧延することによって得られる積層シートを用いることもできる。
【選択図】なし
Description
(I)ポリテトラフルオロエチレン(以下、PTFEと記載する。)とカーボン粒子とを含むシート状成形体を複数準備する工程と、
(II)複数の前記シート状成形体を重ね合わせて圧延する工程と、
を含む。
(I)PTFEとカーボン粒子とを含むシート状成形体を複数準備する工程と、
(II)複数の前記シート状成形体を重ね合わせて圧延する工程と、
を含む。 工程(I)の例について説明する。
PTFEファインパウダー(商品名「F104」、ダイキン工業株式会社製)15質量部、アセチレンブラック(商品名「デンカブラック(粉状品)」、電気化学工業株式会社製)85質量部、成形助剤としての飽和炭化水素(商品名「NSクリーン220」、ジャパンエナジー社製)140質量部を、ミキサーにて混合した。混合条件は、回転数100rpm温度20℃、混合時間2分間とした。混合物を、圧力0.3MPaで圧縮し予備成形した。次に、この予備成形体を約10MPaで押出して、直径15mmの丸棒を成形した。さらにこの丸棒を一対の金属製圧延ロール(表面温度40℃)間に通して圧延し、厚さ5mm、幅25mmの母シート(シート状成形体)を得た。
熱線法熱伝導率測定装置(商品名「QTM−500」、京都電子工業株式会社製)を用いて、厚み方向における熱伝導率を測定した。
4端子法で測定した。100mAの電流を多孔質シートの厚さ方向に流して、電圧を測定することによって体積抵抗率を求めた。電極プローブを0.2MPaの圧力で多孔質シートに押し当てて、測定を行った。
テンシロン万能試験機(株式会社エー・アンド・デイ製)を用いて、多孔質シートを厚さ方向に0.5mm/minの速度で圧縮し、変位と応力とを測定した。20kPa応力荷重点を変位0とし、5%歪み時の応力(δ)の測定値を用いて、以下の式を用いて圧縮弾性率(E)を算出した。
E=δ/0.05
PTFEファインパウダー(商品名「F104」、ダイキン工業株式会社製)30質量部、アセチレンブラック(商品名「デンカブラック(粉状品)」、電気化学工業株式会社製)70質量部、成形助剤としての飽和炭化水素(商品名「NSクリーン220」、ジャパンエナジー社製)100質量部を、ミキサーにて混合した。それ以外は実施例1と同様の方法を用いて、実施例2の多孔質シートを作製した。
PTFEファインパウダー(商品名「F104」、ダイキン工業株式会社製)15質量部、アセチレンブラック(商品名「デンカブラック(粉状品)」、電気化学工業株式会社製)85質量部、成形助剤としての飽和炭化水素(商品名「NSクリーン220」、ジャパンエナジー社製)140質量部を、ミキサーにて混合した。混合条件は、回転数100rpm温度20℃、混合時間2分間とした。混合物を、圧力0.3MPaで圧縮し予備成形した。次に、この予備成形体を約10MPaで、厚さ5mm、幅30mmの板状に押出し成形した。さらにこの板状成形体を一対の金属製圧延ロール(表面温度40℃)間に通して押出し方向に圧延し、厚さ1mm、幅50mmのシートを得た。次いで、このシートを150℃に加熱して成形助剤を除去した。
Claims (7)
- (I)ポリテトラフルオロエチレンとカーボン粒子とを含むシート状成形体を複数準備する工程と、
(II)複数の前記シート状成形体を重ね合わせて圧延する工程と、
を含む、多孔質シートの製造方法。 - 前記工程(I)と前記工程(II)とが交互に繰り返される、請求項1に記載の多孔質シートの製造方法。
- 前記工程(II)を繰り返す際に、圧延方向を変更する、請求項2に記載の多孔質シートの製造方法。
- 請求項1〜3の何れか1項に記載の方法によって得られる多孔質シートを用いて作製された断熱シート。
- ポリテトラフルオロエチレンとカーボン粒子とを含み、
厚さ方向における熱伝導率が0.05w/mK以上0.1w/mK以下であり、且つ、厚さ方向における体積抵抗率が0.5Ω・cm以上2Ω・cm以下である、多孔質シート。 - 厚さ方向における5%歪み時の圧縮弾性率が0.5MPa以上2MPa以下である、請求項5に記載の多孔質シート。
- 請求項5または6に記載の多孔質シートを用いて作製された断熱シート。
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JP2008119278A JP4842294B2 (ja) | 2008-04-30 | 2008-04-30 | 多孔質シートおよびその製造方法、並びに断熱シート |
EP20090738811 EP2272902B8 (en) | 2008-04-30 | 2009-04-28 | Porous sheet, process for production thereof, and heat-insulating sheet |
PCT/JP2009/058326 WO2009133874A1 (ja) | 2008-04-30 | 2009-04-28 | 多孔質シートおよびその製造方法、並びに断熱シート |
US12/989,151 US9017817B2 (en) | 2008-04-30 | 2009-04-28 | Method for producing laminated porous sheet comprising polytetrafluoroethylene and carbon particles |
CN2009801154733A CN102015855B (zh) | 2008-04-30 | 2009-04-28 | 多孔片材及其制造方法以及隔热片 |
US14/668,457 US20150203646A1 (en) | 2008-04-30 | 2015-03-25 | Method for producing laminated porous sheet comprising polytetrafluoroethylene and carbon particles |
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EP (1) | EP2272902B8 (ja) |
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Cited By (1)
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JP5322894B2 (ja) * | 2008-11-12 | 2013-10-23 | 日東電工株式会社 | 絶縁性熱伝導シートの製造方法、絶縁性熱伝導シート及び放熱部材 |
EP2690138A4 (en) * | 2011-03-23 | 2014-09-03 | Nitto Denko Corp | HEAT DISSIPATING ELEMENT AND METHOD FOR MANUFACTURING SAME |
CN104603926B (zh) * | 2012-08-29 | 2017-03-01 | 夏普株式会社 | 基板处理装置和液晶显示面板制造装置 |
EP3789445B1 (en) * | 2014-02-26 | 2023-09-06 | Resonac Corporation | Aerogel |
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- 2009-04-28 WO PCT/JP2009/058326 patent/WO2009133874A1/ja active Application Filing
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- 2009-04-28 EP EP20090738811 patent/EP2272902B8/en active Active
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EP2272902A4 (en) | 2012-10-17 |
CN102015855A (zh) | 2011-04-13 |
CN102015855B (zh) | 2013-04-10 |
JP4842294B2 (ja) | 2011-12-21 |
US9017817B2 (en) | 2015-04-28 |
EP2272902B1 (en) | 2013-08-07 |
EP2272902B8 (en) | 2014-01-08 |
US20110039091A1 (en) | 2011-02-17 |
EP2272902A1 (en) | 2011-01-12 |
US20150203646A1 (en) | 2015-07-23 |
WO2009133874A1 (ja) | 2009-11-05 |
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