メタル・オーガニック・フレームワークにおける衝撃波エネルギー吸収

Xuan Zhou¹, Yu-Run Miao¹, William L Shaw¹

¹Department of Chemistry , University of Illinois at Urbana-Champaign , Urbana , Illinois 61801 , United States.

Journal of the American Chemical Society

|February 1, 2019

まとめ

ゼオリック・イミダゾラート・フレームワーク (ZIF-8) は,圧縮と結合破裂を含む複数のメカニズムを通じて衝撃波を効果的に消去します. この多孔質の素材は衝撃吸収器の応用に有望だ

科学分野:

材料科学
メカニクス
化学について

背景:

メタル・オーガニック・フレームワーク (MOF) は,様々なメカニズムを通じてエネルギーの分散の可能性を示しています.
静的な高圧研究により,MOFは多機能的なショック分散を提供できると示唆されています.
動的ショック圧縮下でのMOFの動作に関するデータは限られている.

研究の目的:

ゼオリティクイミダゾラートフレームワーク (ZIF-8) の衝撃波減弱能力を調査する.
孔性のZIF-8における衝撃分散のメカニズムを理解する
伝統的な基準と比較して,ZIF-8を衝撃吸収材料として評価する.

主な方法:

衝撃波の減衰をZIF-8で測定する.
粉末の圧縮,ナノ孔の崩壊,化学結合の破裂を含む分散過程の分析.
異なる衝撃速度でのPMMAとZIF-8のエネルギー吸収の比較分析

主要な成果:

ZIF-8は粉末の圧縮,ナノ孔の崩壊,化学結合の破裂といった複数のプロセスを経て衝撃波を消去します
ZIF-8の衝撃エネルギー吸収は,その厚さと正比例しています.
ZIF-8は,PMMAと比較して優れた衝撃エネルギー吸収を示し,0. 75 km/sで重量単位あたり7倍,1. 6 km/sで2.5倍に吸収します.

結論:

ZIF-8は多機能の衝撃波の消去能力を持っています
ZIF-8層の厚さは,望ましい衝撃減弱レベルを達成するために設計することができます.
ZIF-8のような設計されたMOFは保護のための強化された衝撃吸収材料への経路を提供します

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