耐燃藥劑雙重擴散處理對纖維素材料熱降解特性之影響

Effects of Fire Retardants on Pyrolysis Characteristics of Cellulosic Materials Applied by Double Diffusion Technique

林曉洪(Sheau-Horng Lin)

《中華林學季刊》 38卷2期 (2005/06) Pp. 227-243

https://doi.org/10.30064/QJCF.200506.0009

摘要

本研究首先探討纖維素材料以磷酸氫二銨（第一液）分別與十三種無機鹽飽和溶液反應劑（第二液）之耐燃藥劑「雙重擴散」處理後，各藥劑處理對試材藥劑重量增加率之影響。次以熱重分析技術探討其熱降解之特性。研究結果顯示試材之藥劑重量增加率與第一液藥劑濃度及藥劑種類等因子有關。即試材藥劑重量增加率隨第一液藥劑濃度增加而增加之趨勢。且第一液藥劑濃度與藥劑重量增加率，兩者間呈直線迴歸之正相關。磷酸氫二銨與十三種飽和溶液之藥劑雙重擴散反應後，形成之複合鹽類分別可展現其耐燃抑制機制。熱重分析適合未處理與藥劑處理纖維素材料熱降解特性之探討，並作為藥劑作用良窳選擇之工具。研究顯示，藥劑處理試料可降低熱降解起始溫度及增加炭生成量。

關鍵字

纖維素材料 ； 雙重擴散 ； 耐燃藥劑 ； 熱降解特性

並列摘要

This study was first to investigate the combined effects of various chemicals on the weight gains of cellulosic materials. DAP was introduced in the first step and followed by thirteen inorganic saturated solutions by means of double diffusion process. Then, thermogravimetric analysis was used to explore the pyrolysis characteristics of the said cellulosic materials to screen out the chemical combinations of better fire retardancy. The experimental results showed that the chemical weight gains of the specimens were the functions of DAP's concentration and types of saturated chemicals used. Fire retardant mechanisms such as the reducing of pyrolysis onset temperature and the increasing of char residue were characterized for the treated specimens. Thermogravimetric analysis was proved suitable for the understanding of processed cellulosic materials' pyrolysis and was thus adopted as a standard for the evaluation of the fire retardant efficiency of chemicals.

並列關鍵字

Cellulosic materials ； Double diffusion ； Fire retardant ； Pyrolysis characteristics