A Comparative Study on the Fire Retardancy of Sealer Coated Plywood by BMCT and IPT

건축재료연소시험기(建築材料燃燒試驗機)와 경사판(傾斜板) 시험기(試驗器)를 이용(利用)한 합판(合板)의 내화도(耐火度) 측정비교(測定比較)

This experiment was carried out to evaluate the results of fire retardancy of sealer coated plywood by Building material combustibility tester and Inclined panel tester. At this study, weight loss percentage, flame exhausted time, burning point and smoke yield coefficient were examined. The findings of this study lead to conclusions as listed below. 1. It was obvious that weight loss percentage and flame exhausted time of Inclined panel tester had more remarkable tendency than those of Building material combustibility tester. 2. Burning point was determined by Inclined panel tester while smoke yield coefficient by Building material combustibility tester. 3. Weight loss percentage decreased remarkably with proportion to the increase of sealer coated amount during 5 minutes burning. 4. Flame exhausted time decreased with proportion to the increase of sealer coated amount during 3 minutes burning. 5. Burning point indicated increasing tendency with proportion to the increase of sealer coated amount. 6. Smoke yield coefficient of urea scaler showed definite inclination decreasing with the increase of sealer coated amount.