木粉及聚磷酸銨作為環氧樹脂阻燃塗料配方之應用

Abstract

本研究藉由熱重分析 (Thermogravimetric Analyzer, TGA)、傅立葉轉換紅外光譜 (Fourier-transform infrared spectroscopy, FT-IR) 與圓錐量熱儀 (Cone Calorimeter) 探討環氧樹脂 (Epoxy resin, EP) 在添加聚磷酸銨 (Ammonium Polyphosphate, APP) 與柳杉木粉 (Wood flour, WF) 後的熱穩定性與燃燒行為。TGA 結果顯示，單獨添加 APP 能有效提升殘留炭量，而加入 WF 雖在高溫階段能成炭提高殘重但缺乏結構支撐炭層；當同時添加 APP 與 WF 時，其殘留重量優於單一添加，顯示出良好的協同效應。 FT-IR 光譜分析中觀察到添加 APP 後於高溫下形成 O-P-O 與 P-O-C 等結構，有助於生成穩定的磷含炭層，添加 WF 則保留芳香環訊號，顯示其部分結構參與炭化反應。Cone Calorimeter 結果驗證阻燃性能的提升，APP 有效降低熱釋放速率 (HRR) 與總熱釋放量 (THR)，而 WF 的加入則在延遲熱釋放與形成炭層方面提供額外貢獻。

This study investigates the thermal stability and combustion behavior of epoxy resin (EP) after the incorporation of ammonium polyphosphate (APP) and wood flour (WF) using thermogravimetric analysis (TGA), Fourier-transform infrared spectroscopy (FT-IR), and a cone calorimeter. The TGA results indicate that the addition of APP alone effectively increases the residual char yield, while the incorporation of WF promotes char formation at high temperatures and enhances the residual mass, albeit without forming a structurally robust char layer. When APP and WF are added simultaneously, the residual weight is higher than that obtained with either additive alone, demonstrating a pronounced synergistic effect. FT-IR spectral analysis reveals that the presence of APP leads to the formation of O-P-O and P-O-C structures at elevated temperatures, which contributes to the generation of a stable phosphorus-containing char layer. In contrast, samples containing WF retain signals associated with aromatic rings, indicating that portions of the WF structure participate in the carbonization process. Cone calorimeter results further confirm the improvement in flame-retardant performance. APP significantly reduces the heat release rate (HRR) and total heat release (THR), while the addition of WF provides additional contributions by delaying heat release and promoting char layer formation.