JPWO2011037247A1 - ハニカム構造体 - Google Patents
ハニカム構造体 Download PDFInfo
- Publication number
- JPWO2011037247A1 JPWO2011037247A1 JP2011533073A JP2011533073A JPWO2011037247A1 JP WO2011037247 A1 JPWO2011037247 A1 JP WO2011037247A1 JP 2011533073 A JP2011533073 A JP 2011533073A JP 2011533073 A JP2011533073 A JP 2011533073A JP WO2011037247 A1 JPWO2011037247 A1 JP WO2011037247A1
- Authority
- JP
- Japan
- Prior art keywords
- honeycomb structure
- partition wall
- mass
- silicon carbide
- silicon
- 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.)
- Granted
Links
- 239000002245 particle Substances 0.000 claims abstract description 57
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 47
- 238000005192 partition Methods 0.000 claims abstract description 45
- 239000010703 silicon Substances 0.000 claims abstract description 33
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 33
- 239000011230 binding agent Substances 0.000 claims abstract description 22
- 230000002093 peripheral effect Effects 0.000 claims abstract description 14
- 239000012530 fluid Substances 0.000 claims abstract description 5
- 239000011148 porous material Substances 0.000 claims description 30
- 239000003054 catalyst Substances 0.000 abstract description 26
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 33
- 229910052751 metal Inorganic materials 0.000 description 24
- 239000002184 metal Substances 0.000 description 24
- 238000000034 method Methods 0.000 description 16
- 239000007789 gas Substances 0.000 description 14
- 239000002994 raw material Substances 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 10
- 239000000843 powder Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 238000010304 firing Methods 0.000 description 8
- 238000002156 mixing Methods 0.000 description 8
- 238000001035 drying Methods 0.000 description 7
- 239000004927 clay Substances 0.000 description 4
- 238000007561 laser diffraction method Methods 0.000 description 4
- 239000011863 silicon-based powder Substances 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 3
- 229910052753 mercury Inorganic materials 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000004094 surface-active agent Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 235000010980 cellulose Nutrition 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007604 dielectric heating drying Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 238000007602 hot air drying Methods 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- BDAGIHXWWSANSR-NJFSPNSNSA-N hydroxyformaldehyde Chemical compound O[14CH]=O BDAGIHXWWSANSR-NJFSPNSNSA-N 0.000 description 2
- -1 hydroxypropoxyl Chemical group 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920000609 methyl cellulose Polymers 0.000 description 2
- 239000001923 methylcellulose Substances 0.000 description 2
- 235000010981 methylcellulose Nutrition 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000006213 oxygenation reaction Methods 0.000 description 2
- 239000011856 silicon-based particle Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 229910000018 strontium carbonate Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
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- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 235000019425 dextrin Nutrition 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 description 1
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 1
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 1
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Abstract
Description
本発明のハニカム構造体の一の実施形態は、図1及び図2に示すように、流体の流路となる一方の端面11から他方の端面12まで延びる複数のセル2を区画形成する多孔質の隔壁1と、最外周に位置する(隔壁1全体の外周を取り囲むように配設された)外周壁3とを有するハニカム構造部4を備えるものであり、隔壁1及び外周壁3が、骨材としての炭化珪素粒子(炭化珪素)、及び炭化珪素粒子を結合させる結合材としての珪素を含有し、隔壁1の厚さが50〜200μmであり、セル密度が50〜150セル/cm2であり、骨材としての炭化珪素の平均粒子径が3〜40μmであり、400℃における体積電気抵抗が1〜40Ωcmである。本実施形態のハニカム構造体100は、ハニカム構造部3からなるものである。図1は、本発明のハニカム構造体の一の実施形態を模式的に示す斜視図である。図2は、本発明のハニカム構造体の一の実施形態の、セルの延びる方向に平行な断面を示す模式図である。
次に、本発明のハニカム構造体の一の実施形態の製造方法について説明する。
セラミックス原料として、炭化珪素(SiC)粉末と金属珪素(Si)粉末とを80:20の質量割合で混合し、これに、焼結助剤として炭酸ストロンチウム、バインダとしてヒドロキシプロピルメチルセルロース、造孔材として吸水性樹脂を添加すると共に、水を添加して成形原料とし、成形原料を混練し、真空土練機により円柱状の坏土を作製した。バインダの含有量は炭化珪素(SiC)粉末と金属珪素(Si)粉末の合計に対し7質量%であり、炭酸ストロンチウムの含有量は炭化珪素(SiC)粉末と金属珪素(Si)粉末の合計に対し1質量%であり、造孔材の含有量は炭化珪素(SiC)粉末と金属珪素(Si)粉末の合計に対し3質量%であり、水の含有量は炭化珪素(SiC)粉末と金属珪素(Si)粉末の合計に対し42質量%であった。炭化珪素粉末の平均粒子径は20μmであり、金属珪素粉末の平均粒子径は6μmであった。また、造孔材の平均粒子径は、20μmであった。炭化珪素、金属珪素及び造孔材の平均粒子径は、レーザー回折法で測定した値である。
ハニカム構造体と同じ材質で10mm×10mm×50mmの試験片を作成した。両端部全面に銀ペーストを塗布し、配線して通電できるようにした。試験片に電圧印加電流測定装置をつなぎ電圧を印加した。試験片中央部に熱伝対を設置し、電圧印加時の試験片温度の経時変化をレコーダーにて確認した。100〜200V印加し、試験片温度が400℃になった時点で流れた電流値及び電圧値と、試験片寸法から体積電気抵抗を算出した。
底面(端面)が直径93mmの円形であり、セルの延びる方向における長さが100mmであるハニカム構造体(担体)の側面に、銀ペーストを塗布し、配線して通電できるようにした。担体に電圧印加電流測定装置をつなぎ電圧を印加した。熱電対を用いて、600V印加時の担体内の温度分布を測定し(ハニカム構造体内を、均等に39箇所、温度測定する。)、担体内の平均温度が400℃になった時点で流れた電流値及び電圧値から、担体電気抵抗を算出した。
上記「担体電気抵抗」の試験と同様にして、600V印加し、担体内の平均温度が400℃になった時点で流れた電流値を測定した。
ハニカム構造体の圧力損失はハニカム構造体の断面の開口率で評価した。開口率は、ハニカム構造体の断面積(セルの延びる方向に直交する断面の面積)に対する、ハニカム構造体の「セルの延びる方向」に直交する断面における「セル(開口部)の合計面積」、の比率とした。
「SiC平均粒子径(μm)」、「SiC配合量(質量%)」、「Si平均粒子径(μm)」、「Si配合量(質量%)」、「造孔材平均粒子径(μm)」、「造孔材含有量(造孔材)(質量%)」、「水含有量(水)(質量%)」、「隔壁の気孔率(気孔率)(%)」、「隔壁の平均細孔径(平均細孔径)(μm)」、「隔壁厚さ(μm)」、「セル密度(セル/cm2)」及び「セル形状」を表1に示すように変化させた以外は、実施例1と同様にしてハニカム構造体を作製した。実施例1の場合と同様にして、「ハニカム構造体の体積電気抵抗(体積電気抵抗)(Ωcm)」、「ハニカム構造体の電気抵抗(担体電気抵抗)(Ω)」、「電流値安定性」及び「圧力損失」を測定した。結果を表1に示す。
Claims (6)
- 流体の流路となる一方の端面から他方の端面まで延びる複数のセルを区画形成する多孔質の隔壁と、最外周に位置する外周壁とを有するハニカム構造部を備え、
前記隔壁及び前記外周壁が、骨材としての炭化珪素粒子、及び前記炭化珪素粒子を結合させる結合材としての珪素を含有し、
前記隔壁の厚さが50〜200μmであり、セル密度が50〜150セル/cm2であり、前記骨材としての炭化珪素粒子の平均粒子径が3〜40μmであり、400℃における体積電気抵抗が1〜40Ωcmであるハニカム構造体。 - 前記骨材としての炭化珪素粒子の質量と前記結合材としての珪素の質量の合計に対する、前記結合材としての珪素の質量の比率が、10〜40質量%である請求項1に記載のハニカム構造体。
- 前記隔壁の気孔率が30〜60%であり、前記隔壁の平均細孔径が2〜20μmである請求項1又は2に記載のハニカム構造体。
- 400℃における電気抵抗が1〜30Ωである請求項1〜3のいずれかに記載のハニカム構造体。
- 前記隔壁の厚さが70〜130μmであり、セル密度が70〜100セル/cm2であり、前記隔壁の気孔率が35〜45%であり、前記隔壁の平均細孔径が10〜20μmであり、前記骨材としての炭化珪素粒子の質量と前記結合材としての珪素の質量の合計に対する、前記結合材としての珪素の質量の比率が、15〜35質量%であり、400℃における体積電気抵抗が10〜35Ωcmである請求項1〜4のいずれかに記載のハニカム構造体。
- 前記セルの延びる方向に直交する断面における前記セルの形状が、四角形又は六角形である請求項1〜5のいずれかに記載のハニカム構造体。
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EP2554264B1 (en) | 2010-03-31 | 2017-05-31 | NGK Insulators, Ltd. | Honeycomb structure |
EP2554263B1 (en) | 2010-03-31 | 2018-08-15 | NGK Insulators, Ltd. | Honeycomb structure |
CN103415490B (zh) * | 2011-03-18 | 2015-12-09 | 日本碍子株式会社 | 碳化硅质多孔体、蜂窝结构体及电加热式催化剂载体 |
JP2013212493A (ja) | 2012-03-30 | 2013-10-17 | Ngk Insulators Ltd | ハニカム構造体 |
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CN108698037B (zh) * | 2016-03-24 | 2019-10-18 | 株式会社科特拉 | 排气净化装置 |
JP7038585B2 (ja) * | 2018-03-30 | 2022-03-18 | 日本碍子株式会社 | セラミックス多孔体及び集塵用フィルタ |
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