JP2010245097A - 土中適合電波吸収体 - Google Patents
土中適合電波吸収体 Download PDFInfo
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- JP2010245097A JP2010245097A JP2009089025A JP2009089025A JP2010245097A JP 2010245097 A JP2010245097 A JP 2010245097A JP 2009089025 A JP2009089025 A JP 2009089025A JP 2009089025 A JP2009089025 A JP 2009089025A JP 2010245097 A JP2010245097 A JP 2010245097A
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- radio wave
- wave absorber
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- 239000006096 absorbing agent Substances 0.000 title claims abstract description 51
- 230000003044 adaptive effect Effects 0.000 title 1
- 239000004576 sand Substances 0.000 claims abstract description 15
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 14
- 239000004917 carbon fiber Substances 0.000 claims abstract description 14
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 12
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000007849 furan resin Substances 0.000 claims abstract description 4
- 239000005011 phenolic resin Substances 0.000 claims abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 18
- 239000000470 constituent Substances 0.000 claims description 11
- 239000004927 clay Substances 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- 239000004115 Sodium Silicate Substances 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 3
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 3
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims 1
- 239000002689 soil Substances 0.000 abstract description 16
- 239000011230 binding agent Substances 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 3
- 235000019353 potassium silicate Nutrition 0.000 abstract description 3
- 238000007664 blowing Methods 0.000 abstract 1
- 238000005266 casting Methods 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 230000000644 propagated effect Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000835 fiber Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000011496 polyurethane foam Substances 0.000 description 2
- 230000001902 propagating effect Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000002981 blocking agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920006327 polystyrene foam Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
【解決手段】土や砂に対し、0.05〜5.00mass%の導電性炭素繊維と、水ガラス、フラン樹脂、フェノール樹脂などの結合バインダーとを混合し、角錐または円錐などの型枠の中に鋳込んだ後、硬化剤の添加または反応硬化を促すガスを通気させ、空中よりも地中でより反射減衰量の大きい電波吸収体を成形する。
【選択図】図1
Description
図1は、本発明の一実施例に係る電波吸収体の製造方法を説明するための断面図である。まず、乾燥粘土6.5kgに対し130gの繊維長6mm(アスペクト比400)の導電性炭素繊維を加え、株式会社チヨダマシナリー社製のオムニミキサーで30分間混合し、その後、フラタリー(Flattery)珪砂6.5kgを加えてさらに10分間混合した後、結合バインダー(固結剤)として200gの水ガラスを加えたものを、底辺200×200mm、高さ500mmのピラミッド型枠1に鋳込み、炭酸ガスを2分間通気して電波吸収体2を成形した。
(比較例1)
乾燥粘土6.5kgに対し130gの繊維長0.7mm(アスペクト比50以下)の導電性炭素繊維を加え、株式会社チヨダマシナリー社製のオムニミキサーで30分間混合し、その後、フラタリー珪砂6.5kgを加えてさらに10分間混合した後、結合バインダーとして200gの水ガラスを加えたものを、底辺200×200mm、高さ500mmのピラミッド型枠に鋳込み、炭酸ガスを2分間通気して電波吸収体を成形した。
(実施例2)
実施例1で製造した電波吸収体の性能確認のため、底辺が金属の箱に砂のみを入れた場合と、吸収体のみを入れた場合と、吸収体を入れてから砂を入れた場合との反射減衰量を比較したところ、図4のグラフに示すように、吸収体を砂に混合させた場合、砂のみの場合よりも、底面からの反射を抑制できることがわかった。
2 吸収体原料
Claims (4)
- 導電性炭素繊維を地質構成材料に混合して、錐状に成形され、電波渡来方向に頂点を向けて配置される電波吸収体。
- 前記地質構成材料がケイ砂または粘土を含み、前記地質構成材料に対して、導電性炭素繊維を0.05〜5.00mass%混合した請求項1記載の電波吸収体。
- 前記地質構成材料がケイ砂または粘土を含み、前記地質構成材料に対して、ケイ酸ソーダ、セメント、フェノール樹脂、フラン樹脂、およびウレタン樹脂からなる群から選択される少なくとも1種類の固結剤を、0.1〜10mass%混合して成形した請求項1記載の電波吸収体。
- 前記導電性炭素繊維のアスペクト比が100以上である請求項1記載の電波吸収体。
Priority Applications (1)
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JP2009089025A JP4905902B2 (ja) | 2009-04-01 | 2009-04-01 | 土中適合電波吸収体 |
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JP2009089025A JP4905902B2 (ja) | 2009-04-01 | 2009-04-01 | 土中適合電波吸収体 |
Publications (2)
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JP2010245097A true JP2010245097A (ja) | 2010-10-28 |
JP4905902B2 JP4905902B2 (ja) | 2012-03-28 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109437808A (zh) * | 2018-11-06 | 2019-03-08 | 中国神华能源股份有限公司 | 一种呋喃树脂改性的硅酸盐复合胶泥及其制备方法 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58108603A (ja) * | 1981-12-14 | 1983-06-28 | 清水 康敬 | 電波吸収体及びその製造方法 |
JPS58162695A (ja) * | 1982-03-19 | 1983-09-27 | Hitachi Zosen Corp | 石炭の脱灰処理法 |
JPH0766584A (ja) * | 1993-08-25 | 1995-03-10 | Mitsubishi Chem Corp | モルタル又はコンクリート積層形電波吸収体 |
JPH088576A (ja) * | 1994-06-23 | 1996-01-12 | Takenaka Komuten Co Ltd | 電波吸収体用組成物および電波吸収体の製造方法 |
JPH10197630A (ja) * | 1997-01-09 | 1998-07-31 | Osaka Gas Co Ltd | 地中探査レーダの較正装置 |
JP2004231492A (ja) * | 2003-01-31 | 2004-08-19 | Konoshima Chemical Co Ltd | 不燃性電波吸収体の省エネルギ製造方法及びこの製造方法により得られた不燃性電波吸収体 |
JP2006073759A (ja) * | 2004-09-01 | 2006-03-16 | Mitsubishi Cable Ind Ltd | 電波吸収体及びその製造方法 |
-
2009
- 2009-04-01 JP JP2009089025A patent/JP4905902B2/ja active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58108603A (ja) * | 1981-12-14 | 1983-06-28 | 清水 康敬 | 電波吸収体及びその製造方法 |
JPS58162695A (ja) * | 1982-03-19 | 1983-09-27 | Hitachi Zosen Corp | 石炭の脱灰処理法 |
JPH0766584A (ja) * | 1993-08-25 | 1995-03-10 | Mitsubishi Chem Corp | モルタル又はコンクリート積層形電波吸収体 |
JPH088576A (ja) * | 1994-06-23 | 1996-01-12 | Takenaka Komuten Co Ltd | 電波吸収体用組成物および電波吸収体の製造方法 |
JPH10197630A (ja) * | 1997-01-09 | 1998-07-31 | Osaka Gas Co Ltd | 地中探査レーダの較正装置 |
JP2004231492A (ja) * | 2003-01-31 | 2004-08-19 | Konoshima Chemical Co Ltd | 不燃性電波吸収体の省エネルギ製造方法及びこの製造方法により得られた不燃性電波吸収体 |
JP2006073759A (ja) * | 2004-09-01 | 2006-03-16 | Mitsubishi Cable Ind Ltd | 電波吸収体及びその製造方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109437808A (zh) * | 2018-11-06 | 2019-03-08 | 中国神华能源股份有限公司 | 一种呋喃树脂改性的硅酸盐复合胶泥及其制备方法 |
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JP4905902B2 (ja) | 2012-03-28 |
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