- 期刊
氧氣指數評估阻燃藥劑雙重處理放射松單板之抑焰效應
The Flame Inhibition Efficiency of Fire Retardants Double Treated Radiata Pine Veneer by Oxygen Index Evaluation
摘要
本研究之目的旨在探討放射松單板經矽酸鈉與十二種無機鹽飽和溶液反應劑之阻燃藥劑雙重處理後，對試材藥劑重量增加率變化，並以氧氣指數試驗法評估處理材之抑焰效應，以尋求較佳之藥劑組合。經阻燃藥劑雙重處理之試材可改善其抑焰效應且藥劑重量增加率及藥劑種類為影響試材抑焰效應之關鍵因子。第一液藥劑濃度為30-40%時，部份試材表面會出現結晶或粉狀藥劑沉積現象。第一液與十二種反應劑複合後，試材重量增加率以矽酸鈉-氯化鋅處理者最大(109.9%)，而矽酸鈉(SS)－硼酸鋅(ZB)處理者最小(13.6%)。個別藥劑處理之試材抑焰效應隨重量增加率增加而提升，且兩者間呈一次直線迴歸正相關之趨勢。又經各組藥劑處理後其難燃等級均可提升至3~1級。鄧肯分析結果顯示，試材經第一液與十二種反應劑處理後，以矽酸鈉(SS)－四硼酸鉀(PB)(0.31(v/v，%)%^(-1))者抑焰效應改善最佳，而矽酸鈉(SS)－氯化鋅(ZC)【(0.09)(v/v，%)%^(-1)】及矽酸鈉(SS)－氯化鈣(CC)【(0.08)(v/v，%)%^(-1)】兩者抑焰效應最差。
並列摘要
The weight gains of the double treated Radiata pine veneer were examined after soaking in sodium silicate (SS) followed by twelve saturated inorganic salts solution (reactant reagents). Oxygen index (OI) method was applied to evaluate the flame inhibition efficiency (FIE) on the treated specimens to screen out the better combinations of fire retardants. The double treated specimens were proved to possess better flame inhibition, and chemical weight gains. The type of chemicals were found to be the main factors that affected the flame inhibition, efficiency of specimens. Complex salts derived from the reaction of double reagents were deposited on some of the specimen's surface when treated with 30% or 40% SS followed by relations with 12 saturated reagents. As sodium silicate with twelve saturated inorganic salts solution formed composite, the weight gains showed the SS-zinc chloride with the largest (109.9%) and the SS-zinc borate with the lowest (13.6%) of the treated specimens. The oxygen index of all the treated specimens increased with increasing weight gains of chemicals for each chemical, and the fire retardant grade was promoted from the third to the first. The treated specimens were all improved on fire-retardant. the best efficiency of flame inhibition showed the sodium silicate and potassium tetraborate (0.31v/v,%) %^(-1)),the sodium silicate and calcium chloride (0.08 v/v,%)%^(-1)), and zinc chloride (0.09 v/v,%)%^(-1) were the poorest.