カルシウム炭酸塩の機能的代替品としてグランドタイヤゴム (GTR) を用いたEPDM化合物の老化行動
Philippe Rotgänger1, Vanessa Spanheimer1, Danka Katrakova-Krüger1
1Materials Laboratory, Faculty of Computer Science and Engineering Science, TH Köln, 51643 Gummersbach, Germany.
Polymers
|February 13, 2026
まとめ
カルシウム炭酸を,EPDMの弾性物質のグランドタイヤゴム (GTR) で置き換えることは,持続可能性のために実現可能である. 部分的なGTR置換は,性能とエコフレンドリー性のバランスをとりますが,大量の量では機械的性質が低下します.
科学分野:
- マテリアルサイエンス 材料科学
- ポリマー化学のポリマー化学について
- 持続可能なエンジニアリング
背景:
- EPDMエラストモールは広く使用されていますが,炭酸カルシウム (CaCO3) のような再生不能のフィーラーに依存しています.
- グランドタイヤゴム (GTR) は,リサイクルタイヤから得られた持続可能な代替填料です.
- GTRをEPDMの直接的な充填材料の代替品として調査するには,材料の特性や老化に対する影響を理解する必要があります.
研究 の 目的:
- EPDMの弾性物質の配合でカルシウム炭酸をグランドタイヤゴムで置き換えることの実現可能性を調査する.
- クロスリンク密度,機械性能,および老化行動に対するGTR組み込みの効果を分析する.
- GTRを充填料として使用する際の持続可能性と材料性能の最適なバランスを決定します.
主な方法:
- カルシウム炭酸とグラウンドタイヤのゴムを異なる比率で含有するEPDMベースの弾性体製剤.
- 温度スキャン・ストレス・リラクゼーション (TSSR) 分析により,GTRの火山化とクロスリンク密度への関与を評価する.
- 材料の性能と長期的な耐久性を評価するために,機械的な試験と老化研究 (熱酸化ストレス) を行う.
主要な成果:
- 地面タイヤゴム (GTR) は,火山化プロセスに参加することが確認されました.
- 初期GTRの追加により,クロスリンク密度と機械性能は低下したが,固化を加速した.
- 熱酸化老化は,クロスリンクの密度,硬さ,および破裂時の延長を減少させました.
結論:
- EPDMエラストモアのグランドタイヤゴムでカルシウム炭酸を部分的に置き換えることは,実行可能な持続可能な戦略です.
- 持続可能性とパフォーマンスの間の妥協は,部分的なGTR交換で達成可能である.
- 高濃度のGTRは,EPDMベースの材料の機械的性質を著しく低下させる.
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