メソポラス・ヒート・トラッピング・アンド・スモーク・アドソービング・Fe-MOFは,固いポリウレタン泡の防火性と圧縮抵抗性を向上させる
DongZhao Lu1, YaChao Wang1,2,3,4,5
1School of Resources Engineering, Xi'an University of Architecture & Technology, Xi'an, Shaanxi 710055, China.
Langmuir : the ACS journal of surfaces and colloids
|September 5, 2025
まとめ
この研究では,鉄基の金属有機フレームワーク (Fe-MOF) を導入し,硬質ポリウレタン泡 (RPUF) の耐火性を向上させる. 改造されたRPUFは,熱と煙の放出が減り,熱安定性が向上し,機械性能が向上しています.
科学分野:
- 材料科学
- ポリマー化学
- 消防安全工学
背景:
- 発泡スチロールやプラスチックなどの 易燃性物質に起因する 都市部での火災が増えています
- ポリマーの複合材料に高度な耐火材料が必要である.
- 既存の材料で効率的な熱吸収と煙吸収のための限られたソリューション.
研究 の 目的:
- 耐火性の高い高特異面積メソポラス金属有機フレームワーク (Fe-MOFs) を開発する.
- 固体ポリウレタン泡 (RPUF) に組み込まれたFe-MOFの耐火性能を調査する.
- Fe-MOFの熱安定性,燃焼行動,およびRPUFの物理的性質への影響を評価する.
主な方法:
- Fe-MOF,亜鉛残留物 (ZTs),ピペラジン・パイロフォスファート (PAPP),およびナトリウム・リグノスルフォナート (LS) を使用した固体ポリウレタン泡 (RPUF) の改造.
- コーン・カロミーターと垂直燃焼 (UL-94) 試験による燃焼性能評価
- 熱重量分析 (TGA),熱分解運動,TGA-赤外線 (TGA-IR) による熱安定性分析
- 残留炭素層の形成の分析と物理的特性 (密度,圧縮強度) の試験.
主要な成果:
- Fe-MOFはピーク熱放出率 (p-HRR) を最大64.5%,総熱放出率 (THR) を最大68.6%まで大幅に低下させた.
- トータル・スモーク・プロダクション (TSP) は最大55.6%減少し,すべての改造されたRPUFサンプルがUL-94 V-0の評価を達成した.
- Fe-MOFは分解時にRPUFを保護し,安定した炭素層を促進します.
- RPUFの密度と圧縮強度が増加し,Fe-2の圧縮強度は0. 147から0. 281MPaに上昇した.
結論:
- Fe-MOFは,熱を閉じ込め,煙を吸収するメカニズムを通じて,RPUFの耐火性を効果的に高めます.
- Fe-MOFの組み込みは,ポリマー複合物の熱安定性と機械的性質を改善します.
- この研究は,高度な耐火ポリマー複合材料の開発に固体廃棄物 (ZTs) を利用するための実行可能なアプローチを示しています.
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