The Manufacturing of Fire-retardant Plywood and Its Fire Resistancy (II) Plywood Quality Determination

耐燃合板製造及其耐燃效應（II）合板品質檢定

林曉洪(Sheau-Horng Lin) ； 王秀華(Hsiu-Hwa Wang)

《林產工業》 19卷1期 (2000/03) Pp. 113-122

https://doi.org/10.6561/FPI.2000.19(1).11

摘要

以自行配製二種銨基系列之耐燃劑與CNS 4182（Type C）藥劑進行加壓注入紅柳桉及放射松單板，並以三聚氰胺－尿素甲醛膠合劑膠合，製造五層9mm厚之耐燃合板，評估其耐燃性及相關物理性質（吸濕性、膠合性及含水率）。表面燃燒試驗，則除藥劑L及W之10%濃度處理者外均可通過耐燃3級。三種耐燃劑對試材各項燃燒性能之改善，分別如著火性（tc）：146-329%，發煙性52-100%，發煙係數70-95%，餘焰時間46-100%，及重量損失率38-70%。由磷酸銨、硫酸銨、硼酸及硼砂組成之C藥劑，顯示改善效果最佳，而由硫酸銨及氧化鋅組成之W藥劑者最差。處理合板之吸濕性與藥劑吸收量呈正相關而與布膠量呈負相關。三種藥劑對試材之吸濕性以L藥劑者最小而C藥劑最大。處理合板之含水率與藥劑吸收量呈直線正相關。膠合試驗中，除C藥劑之161.5g/m^2布膠量者外，均可通過Type II剝離試驗。綜合上述耐燃性及物理性質，則以L藥劑者最佳。值得推荐作為內裝合板之耐燃處理藥劑。

關鍵字

耐燃劑 ； 合板 ； 表面燃燒 ； 吸濕性 ； 含水率 ； 剝離試驗

並列摘要

Fire performance and related physical characteristics were determined for 9 mm thick 5-ply plywood, made of red lauan (Shorea sp.) (face) and radiata pine (Pinus radiata) (core) Veneers impregnated before assembly with one of three ammonium-based fire retardants and bonded with melamine urea resin adhesive. Among the examined all of the treated plywood successfully met the CNS 6532, 3rd level fire retardancy requirement except the 10% concentration for Land W. The three retardants improved control of surface flammability 146-329% in exhausting temperature increment (tc), 52-100% in heat generation (td θ)70-95% in fuming factor (C_A) 46-100% in afterflame time (Af), and 38-70% in weight loss percentage (Wlp). A diammonium phosphate, ammonium sulfate, boric acid, borax solution (C) showed the greatest improvement, and an ammonium sulfate, zinc chloride solution (W) the least.The hygroscopicity of the treated plywood correlated positively with the chemical retention and negatively with the amount of spread of adhesive. Ammonium phosphate, boric acid treated (L) specimens were least hygroscopic while those treated with C were most hygroscopic. Moisture content of the treated specimens varied proportionally with the retentions. All treatments except C with the lower adhesive spread passed the Type II peeling test.The L treatment showed most improvement when considering both fire retardancy and physical properties. Such a treatment is recommended for plywood to be used for interior decorative material.

並列關鍵字

Fire retardants ； Plywood ； Surface flammability ； Hygroscopicity ； Moisture content ； Peeling test