摘 要 現行建築技術規則已對室內裝修板材規範其耐燃性能，並以CNS 6532 作為測試標準。施工業者 在進行裝修時，須以木角材或天花板吊筋固定，此角材、吊筋並未加以規範，本研究以ISO 9705 房 間試驗及CNS 12514 建築物構造部分耐火試驗法探討角材、吊筋對裝修材料防火性能之影響情形。 實驗結果指出，在面材被燒穿之前，即使發生閃燃，固定材均無破壞之虞，亦不會影響裝修材 料之性能；但若面材被燒穿，火焰即竄燒至面材背面引發突然大量之放熱，造成木角材炭化但試驗 結束前未崩塌。因此木角材不會影響面材之防火性能，且面材是否燒穿與板材之耐燃性無直接關 係，另對於同種材料而言，厚度越厚，越晚燒穿。

ABSTRACT Using fire proof interior finish materials in buildings is very effective for fire safety. In Taiwan, CNS 6532 is used to evaluate the fire performance of building materials. Practically, wall lining materials need supporting devices by which the materials can be fixed on a wall or ceiling. However, the influence of the supporting devices on the fire performance of wall lining materials is not assessed. In this study, this influence was investigated experimentally by using ISO 9705 and CNS 12514. Our data show that before the burning through of wall lining materials, the supporting devices did not expose to fire even flashover occurred. On the contrary, after the burning through, the back of wall lining materials will be involved and more heat will be released. In addition, the burning through is not related to the combustibility of material. Moreover, the thicker the material, the later the burning through occurs.