1998 Fiscal Year Annual Research Report

カーボンの全レベル空間のアロインクによる新機能の展開

Research Project

Project/Area Number	09243101
Research Institution	Gunma University
Principal Investigator	大谷朝男群馬大学, 工学部, 教授 (10008469)
Co-Investigator(Kenkyū-buntansha)	田邊靖博東京工業大学, 応用セラミックス研究所, 助教授 (70163607) 内山休男長崎大学, 工学部, 助教授 (50039690) 菱山幸宥武蔵工業大学, 工学部, 教授 (90061499) 光来要三九州大学, 機能物質研究所, 助教授 (50122693)
Keywords	多孔性炭素繊維 / ピッチ系炭素繊維 / ホウ素ドープグラフォイル / 高配向黒鉛体 / 無機化合物添加 / 電子物性 / 耐酸化性 / 圧縮強度
Research Abstract	大谷は、フェノール/ポリビニルブチラール系ポリマーブレンドの炭素化後に細孔の生成しない原因を各種の物性測定により追跡し、閉孔の生成と収縮による消失をよることを提唱し、このことを800nmのポリスチレン粒子とフェノール樹脂のポリマーブレンドのモデル前駆体を用いて実証した。光来は、大きさの異なる球晶を含有するナフタレン系ピッチを調製し、小さな球晶をもったピッチからの繊維は、小さなドメイン、狭いフィブリル、短く低いプリーツとなり、圧縮強度は、同一弾性率を有するメソフェーズ100%のピッチから製造した繊維より圧縮強度が1.5から2倍になることを示した。菱山は、高温熱処理したグラフォイルにホウ素をドープし,面間隔d_<002>,電子物性のホウ素濃度依存を測定し,炭素原子のホウ素原子置換によるフェルミ準位低下によって説明できる結果を得た。また高濃度ホウ素ドープ試料に対して弱局在効果に由来する負磁気抵抗を見出した。内山は、ホウ素を真空蒸着したポリイミドフィルム25枚を積層・ホットプレスして黒鉛体を作製し、HP条件と黒鉛002面のフィルム面内配向性等を調べた。ポリイミド中の異種元素の放出後に加圧することにより良好な黒鉛体が得られ、ホウ素添加により黒鉛体の配向性が向上するとともに、フィルム面間の接合強度が上がることを明らかにした。田邊は、タンタルをアロイングした樹脂炭の耐酸化挙動の解明を行った。タンタル添加に伴う樹脂炭の電子構造あるいは化学構造に大きな変化は認められないこと、酸素との反応中間生成物の脱離速度に大きな違いがないこと、酸素に対する活性点が著しく減少することを解明し、活性点の減少が耐酸化特性向上に寄与していることを突き止めた。

Research Products

(22 results)

All Other

All Publications (22 results)

[Publications] Y.G.Wang: "Preparation of mesocarbon microbeads from a synthetic isotropic pitch through two stage heat treatment in the presence of carbon black" Carbon. 36. 1231-1245 (1998)
[Publications] K.Kanno: "Densification of carbons prepared from mesophase pitch and phenolic resin blend" Carbon. 36. 869-874 (1998)
[Publications] I.Mochida: "Regeneration of initial activity of a pitch-based ACF for NO-NH3 reaction at ambient temperature" Fuel. 77. 1741-1746 (1998)
[Publications] I.Mochida: "Activated carbon fibers prepared from quinoline and isoquinoline pitches" 石油学会誌. 41. 399-405 (1998)
[Publications] I.Mochida: "Anodic performance and mechanism of mesophase-pitch-derived carbons in lithium ion batteries" Power Sources. 75. 214-222 (1998)
[Publications] Y-C.Chang: "Anodic performances of coke from coals" Carbon. 36. 1653-1662 (1998)
[Publications] T.Takeichi: "Carbonization and graphitization of Kapton-type polyimide films prepared from polyamide alkyl ester" Carbon. 36. 117-122 (1998)
[Publications] T.Takeichi: "Carbonization and graphitization of polyimide films:effect of size of leaving group at imidization" Journal Applied Polymer Science. 68. 1613-1620 (1998)
[Publications] Y.Hishiyama: "Structure and microtexture of graphitized carbon film derived from aromatic polyimide film Upilex" Carbon. 36. 1113-1117 (1998)
[Publications] Y.Hishiyama: "Structure and properties of boronated graphite" Mol.Cryst.Liq.Cryst.310. 279-284 (1998)
[Publications] G.B.Zhang: "SEM study on oxidation behavior of boron-doped carbon and graphite films" Carbon. (投稿予定).
[Publications] D.H.Zhong: "Effect of low level boron-doping on oxidation behavior of polyimide-derived carbon films" Carbon. (投稿予定).
[Publications] K.Hoshi: "Effect of sonication on curing process in furan resin" 炭素. 1997. 199-201 (1998)
[Publications] H.Kajiura: "Microstructural control of pitch matrix carbon-carbon composite by iodine treatment" Journal of Materials Research. 13. 302-307 (1998)
[Publications] K.Hoshi: "Microstructural change of furan resin derived carbon by addition of carbonaceous fine particles" Ext.Abst.of Int'l Symposium on Carbon 1998. 16-17 (1998)
[Publications] N.Miyajima: "The effect of iodine treatment on carbon yield of coal tar pitch" Ext.Abst.of Int'l Symposium on Carbon 1998. 234-235 (1998)
[Publications] J.Przepiorski: "Pottasium-loaded ACF against H2S gas by blending and dipping method:Effect of subsequent deodorizations and regenerations on deodorant abilities" J.Odor Research and Engineering. 29. 108-114 (1998)
[Publications] J.Przepiorski: "K_2CO_3-loaded deodorizing activated carbon fiber against H2S gas:factors influencing the deodorizing efficiency and the regenerated method" J.Materials Science Letters. 17. 679-682 (1998)
[Publications] J.Ozaki: "Controlling factor of electrocatalytic activity of iron-containaing carbon materials" Chemistry Letters. 1998. 573-574 (1998)
[Publications] R.Imamura: "Steam activation of a phosphorous-containing phenolic resin-based carbon fiber" Carbon. 36. 1243-1245 (1998)
[Publications] Y.Korai: "Meso-scale texture of mesophase pitch and its spun fiber" Carbon. 36. 79-85 (1998)
[Publications] Y.Korai: "The properties of co-oligomerized mesophase pitch from methyln aphthalene and naphthalene catalyzed by HF/BF3" Carbon. 36. 377-382 (1998)

1998 Fiscal Year Annual Research Report

カーボンの全レベル空間のアロインクによる新機能の展開

Principal Investigator

大谷 朝男 群馬大学, 工学部, 教授 (10008469)

Research Products

[Publications] Y.G.Wang: "Preparation of mesocarbon microbeads from a synthetic isotropic pitch through two stage heat treatment in the presence of carbon black" Carbon. 36. 1231-1245 (1998)

[Publications] K.Kanno: "Densification of carbons prepared from mesophase pitch and phenolic resin blend" Carbon. 36. 869-874 (1998)

[Publications] I.Mochida: "Regeneration of initial activity of a pitch-based ACF for NO-NH3 reaction at ambient temperature" Fuel. 77. 1741-1746 (1998)

[Publications] I.Mochida: "Activated carbon fibers prepared from quinoline and isoquinoline pitches" 石油学会誌. 41. 399-405 (1998)

[Publications] I.Mochida: "Anodic performance and mechanism of mesophase-pitch-derived carbons in lithium ion batteries" Power Sources. 75. 214-222 (1998)

[Publications] Y-C.Chang: "Anodic performances of coke from coals" Carbon. 36. 1653-1662 (1998)

[Publications] T.Takeichi: "Carbonization and graphitization of Kapton-type polyimide films prepared from polyamide alkyl ester" Carbon. 36. 117-122 (1998)

[Publications] T.Takeichi: "Carbonization and graphitization of polyimide films:effect of size of leaving group at imidization" Journal Applied Polymer Science. 68. 1613-1620 (1998)

[Publications] Y.Hishiyama: "Structure and microtexture of graphitized carbon film derived from aromatic polyimide film Upilex" Carbon. 36. 1113-1117 (1998)

[Publications] Y.Hishiyama: "Structure and properties of boronated graphite" Mol.Cryst.Liq.Cryst.310. 279-284 (1998)

[Publications] G.B.Zhang: "SEM study on oxidation behavior of boron-doped carbon and graphite films" Carbon. (投稿予定).

[Publications] D.H.Zhong: "Effect of low level boron-doping on oxidation behavior of polyimide-derived carbon films" Carbon. (投稿予定).

[Publications] K.Hoshi: "Effect of sonication on curing process in furan resin" 炭素. 1997. 199-201 (1998)

[Publications] H.Kajiura: "Microstructural control of pitch matrix carbon-carbon composite by iodine treatment" Journal of Materials Research. 13. 302-307 (1998)

[Publications] K.Hoshi: "Microstructural change of furan resin derived carbon by addition of carbonaceous fine particles" Ext.Abst.of Int'l Symposium on Carbon 1998. 16-17 (1998)

[Publications] N.Miyajima: "The effect of iodine treatment on carbon yield of coal tar pitch" Ext.Abst.of Int'l Symposium on Carbon 1998. 234-235 (1998)

[Publications] J.Przepiorski: "Pottasium-loaded ACF against H2S gas by blending and dipping method:Effect of subsequent deodorizations and regenerations on deodorant abilities" J.Odor Research and Engineering. 29. 108-114 (1998)

[Publications] J.Przepiorski: "K_2CO_3-loaded deodorizing activated carbon fiber against H2S gas:factors influencing the deodorizing efficiency and the regenerated method" J.Materials Science Letters. 17. 679-682 (1998)

[Publications] J.Ozaki: "Controlling factor of electrocatalytic activity of iron-containaing carbon materials" Chemistry Letters. 1998. 573-574 (1998)

[Publications] R.Imamura: "Steam activation of a phosphorous-containing phenolic resin-based carbon fiber" Carbon. 36. 1243-1245 (1998)

[Publications] Y.Korai: "Meso-scale texture of mesophase pitch and its spun fiber" Carbon. 36. 79-85 (1998)

[Publications] Y.Korai: "The properties of co-oligomerized mesophase pitch from methyln aphthalene and naphthalene catalyzed by HF/BF3" Carbon. 36. 377-382 (1998)

大谷朝男群馬大学, 工学部, 教授 (10008469)