書誌事項
- タイトル別名
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- Structures in Sulfur-crosslinked EPDM Analyzed by Hahn Echo Method
- パーオキサイド カキョウ EPDM ノ コウゾウ ト ドウテキ トクセイ ニ カンスル ケンキュウ ダイ4ホウ ハーンエコーホウ ニ ヨル イオウ カキョウ EPDM ノ コウゾウ カイセキ
- ハーンエコー法によるイオウ架橋EPDMの構造解析
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抄録
Sulfur-crosslinked EPDMs were examined by 1H pulsed NMR. Spin-spin relaxation time (T2) was measured by Hahn echo method. The decay curve was resolved into two components, T2n and T2nn, which were arising from network molecules and non-network molecules, respectively. For unfilled EPDMs prepared at varying sulfur content, the higher order structures analyzed by Hahn echo method were almost the same as those analyzed for peroxide-crosslinked EPDMs. The reciprocal of Ten measured at 150°C for unfilled EPDMs increased linearly with increase in apparent crosslinking density (νs) values determined by modified Flory-Rehner equation. For EPDMs filled with carbon black (CB), the crosslinking density of rubber phase (νR) was calculated from the relationship between νs and 1/T2n for unfilled EPDMs. The crosslinking density related to CB (νF) was obtained from the difference between the νs and νR. The νF values showed good correlation with the tensile stress at 100% elongation, independent of the kinds of cure agents.
収録刊行物
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- 日本ゴム協会誌
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日本ゴム協会誌 78 (7), 255-259, 2005
一般社団法人 日本ゴム協会
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詳細情報 詳細情報について
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- CRID
- 1390001206561406720
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- NII論文ID
- 10014349467
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- NII書誌ID
- AN00269207
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- COI
- 1:CAS:528:DC%2BD2MXhtVCjtLnF
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- ISSN
- 18840442
- 0029022X
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- NDL書誌ID
- 7420334
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可
