The formulations and effectiveness of indoor fire-retardant paints

• Main Authors: Leu,Shao -yuan, 呂紹元
• Other Authors: Tsai,Ching-Mu
• Format: Others
• Language: zh-TW
• Published: 1999
• Online Access: http://ndltd.ncl.edu.tw/handle/51033210341045467632

碩士 === 國立臺灣大學 === 森林學研究所 === 87 === The objectives of this study are to explore the effective formulation of intumescent fire retardant paints for wood-based material. They were prepared by varying chemical kinds and their mixing ratio, and evaluated according to CNS 13552 and CNS 6532 for combustibility, CNS 10757 for durability. The experimental results are summerized as follows: 1. Char-forming agent is important to the formation of fire- retardant paint. The ratio of char-forming agent and main binder in the paint( using pentaerythritol for char-forming agent and polyvinyl acetate emulsion resin for binder in this experiment) must be higher than 3/2 to meet the requirement of Grade 3 incombustibility test as specified in CNS 6532.And the ratio of dehydrating agent and blowing agent between 1/1 and 3/2 (ammonium polyphosphate/melamine in this study) in the formation of fire-retardant paint will have the best synergism .So, we can understand that the best formation of fire-retardant paint is PVAc15%, PER35%, Melamine25% and APP25% (paint B3) or Melamine20% and APP30% (paint B4) in 60% solid content. 2.The more weight percentage of nitrogen in blowing agent , it shows the better fire-resisting proformance. 3.We can evaluate the smoke evolution、weight loss and the thickness of blowing layer with the results of CNS 6532 by measuring the blowing-layer thickness with the “burn through” method.