JP5883253B2 - 六方晶炭窒化ホウ素、その製造方法及び組成物 - Google Patents
六方晶炭窒化ホウ素、その製造方法及び組成物 Download PDFInfo
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- JP5883253B2 JP5883253B2 JP2011190468A JP2011190468A JP5883253B2 JP 5883253 B2 JP5883253 B2 JP 5883253B2 JP 2011190468 A JP2011190468 A JP 2011190468A JP 2011190468 A JP2011190468 A JP 2011190468A JP 5883253 B2 JP5883253 B2 JP 5883253B2
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- boron carbonitride
- hexagonal boron
- present
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- resin
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- 239000000203 mixture Substances 0.000 title claims description 14
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 33
- 239000012298 atmosphere Substances 0.000 claims description 16
- 229910052757 nitrogen Inorganic materials 0.000 claims description 16
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- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- 229910052580 B4C Inorganic materials 0.000 claims description 5
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- 238000005087 graphitization Methods 0.000 claims description 4
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- XQUPVDVFXZDTLT-UHFFFAOYSA-N 1-[4-[[4-(2,5-dioxopyrrol-1-yl)phenyl]methyl]phenyl]pyrrole-2,5-dione Chemical compound O=C1C=CC(=O)N1C(C=C1)=CC=C1CC1=CC=C(N2C(C=CC2=O)=O)C=C1 XQUPVDVFXZDTLT-UHFFFAOYSA-N 0.000 description 1
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- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
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- 229920001601 polyetherimide Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
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- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- LSZKGNJKKQYFLR-UHFFFAOYSA-J tri(butanoyloxy)stannyl butanoate Chemical compound [Sn+4].CCCC([O-])=O.CCCC([O-])=O.CCCC([O-])=O.CCCC([O-])=O LSZKGNJKKQYFLR-UHFFFAOYSA-J 0.000 description 1
- WLPUWLXVBWGYMZ-UHFFFAOYSA-N tricyclohexylphosphine Chemical compound C1CCCCC1P(C1CCCCC1)C1CCCCC1 WLPUWLXVBWGYMZ-UHFFFAOYSA-N 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
- HVYVMSPIJIWUNA-UHFFFAOYSA-N triphenylstibine Chemical compound C1=CC=CC=C1[Sb](C=1C=CC=CC=1)C1=CC=CC=C1 HVYVMSPIJIWUNA-UHFFFAOYSA-N 0.000 description 1
- MGMXGCZJYUCMGY-UHFFFAOYSA-N tris(4-nonylphenyl) phosphite Chemical compound C1=CC(CCCCCCCCC)=CC=C1OP(OC=1C=CC(CCCCCCCCC)=CC=1)OC1=CC=C(CCCCCCCCC)C=C1 MGMXGCZJYUCMGY-UHFFFAOYSA-N 0.000 description 1
- QQBLOZGVRHAYGT-UHFFFAOYSA-N tris-decyl phosphite Chemical compound CCCCCCCCCCOP(OCCCCCCCCCC)OCCCCCCCCCC QQBLOZGVRHAYGT-UHFFFAOYSA-N 0.000 description 1
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Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Description
(1)シアン化アルカリ金属とハロゲン化ホウ素とを反応させる方法。
(2)有機アミンボラン又はその誘導体、有機窒素ボラン又はその誘導体などの、窒素及びホウ素を同時に含む有機化合物を熱分解する方法。
(3)炭素間の不飽和結合を含むニトリル化合物にハロゲン化ホウ素を反応させて得た付加化合物を、非酸化性雰囲気で焼成する方法。
(4)炭化ホウ素(B4C)と窒素(N2)を、1600〜2250℃で反応させる方法。
(1)黒鉛化指数(GI)が7.0以下である六方晶炭窒化ホウ素。
(2)炭化ホウ素を、窒素を含む0.1MPa以上1MPa以下である雰囲気中で、2300℃以上2500℃以下で加熱して製造される請求項1に記載の六方晶炭窒化ホウ素。
(3)炭化ホウ素を、窒素を含む雰囲気中で、2300℃以上2500℃以下で加熱することを特徴とする、六方晶炭窒化ホウ素の製造方法。
(4)窒素を含む雰囲気の圧力が、0.1MPa以上1MPa以下であることを特徴とする、前記(3)に記載の六方晶炭窒化ホウ素の製造方法。
(5)樹脂及び/又はゴムに前記(1)又は(2)に記載の六方晶炭窒化ホウ素を含有させてなることを特徴とする組成物。
GI=〔面積{(100)+(101)}〕/〔面積(102)〕
B4C+2N2 → h−B4CN4
B4C粉末(電気化学工業製、#1200、平均粒径0.8μm)10gを黒鉛製のルツボに充填した後、電気炉(富士電波工業製、ハイマルチ5000)内に配した。炉内を真空排気した後、窒素ガスを圧力0.1MPaまで充填した。次いで10℃/分の速度で加熱・昇温し、2300℃に達してから1時間保持した。
B4C + 2xN2 → xB4CN4 +(1−x)B4C
管球 : Cu回転対陰極(CuKα;λ=1.54056Å)
出力 : 40kV−300mA
検出器 : シンチレーションカウンター
フィルター : モノクロメータ
スリット条件 : ソーラースリット 5°(入射、受光)
DS−SS−RS = 1°−1°−0.2mm
Scan条件 : ステップスキャン法
ステップ幅;0.02° 計数時間;0.5秒
測定範囲 : 2θ=10〜70°
表1に示す条件の他は実施例1と同様にして窒素を含む雰囲気下での加熱を行った。得られた生成物の質量から反応率を算出し、さらに粉末X線回折法によって生成物の結晶相を同定し、GIを算出した。これらの結果は表2にまとめて示した。
加熱時の保持温度を2250℃とした他は実施例1と同様にして、表1に示す条件にて窒素を含む雰囲気下での加熱を行った。得られた生成物の質量から反応率を算出したところ0.75であった。さらに粉末X線回折法によって生成物の結晶相を同定したところ、生成物は、低結晶性のh−B4CN4であり、GIを算出したところ8.3であった。これらの結果は表2にまとめて示した。
加熱時の保持温度を2250℃とした他は実施例2と同様にして、表1に示す条件にて窒素を含む雰囲気下での加熱を行った。得られた生成物の質量から反応率を算出したところ0.78であった。さらに粉末X線回折法によって生成物の結晶相を同定したところ、生成物は、低結晶性のh−B4CN4であり、GIを算出したところ7.6であった。
加熱時の保持温度を2550℃とした他は実施例1と同様にして、表1に示す条件にて窒素を含む雰囲気下での加熱を行った。得られた生成物の質量から反応率を算出したところ0.37であった。さらに粉末X線回折法によって生成物の結晶相を同定したところ、生成物は、h−B4CN4とB4Cの混合物であった。またB4Cの生成により、h−B4CN4本来の固体潤滑性は損なわれていた。
実施例1〜2で得られた高結晶性h−B4CN4、又は比較例1〜2で得られた低結晶性h−B4CN4の何れかの粉末100質量部と液状シリコーンゴム(東レ・ダウコーニング・シリコーン社製商品名「CF−3110」)50質量部の混合物にトルエン100質量部と加硫剤(東レダウコーニング製 RC−4)0.5質量部を加えてスラリーを調製し、自動塗工装置(テスター産業製 PI−1210)を用いてグリーンシートに成形した後、加熱加硫し、厚み0.20mm(0.0002m)の絶縁放熱シートを製造した。
Claims (6)
- 黒鉛化指数が7.0以下である六方晶炭窒化ホウ素。
- 炭化ホウ素を、窒素を含む雰囲気中で、2300℃以上2500℃以下で加熱することを特徴とする六方晶炭窒化ホウ素の製造方法。
- 前記窒素を含む雰囲気の圧力が、0.1MPa以上1MPa以下であることを特徴とする請求項2に記載の六方晶炭窒化ホウ素の製造方法。
- 前記炭化ホウ素は、レーザー回折散乱法における平均粒径(D50)が30μm以下である粉末であることを特徴とする請求項2又は3に記載の六方晶炭窒化ホウ素の製造方法。
- 前記炭化ホウ素は、レーザー回折散乱法における平均粒径(D50)が5μm以下である粉末であることを特徴とする請求項4に記載の六方晶炭窒化ホウ素の製造方法。
- 樹脂及び/又はゴムに請求項1に記載の六方晶炭窒化ホウ素を含有させてなることを特徴とする組成物。
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