| Summary: | 碩士 === 國立臺灣科技大學 === 營建工程系 === 105 === The present study used various proportions of perlite, unground rice husk ash, and coarse bottom ash as the fire-resistance fillers for the preparation of fire-resistant lacquers. The fire resistance test and microstructural analysis were conducted in order to evaluate the performance of the fire-resistant lacquers. The effects of various proportions of materials and different concentrations of foam were investigated in order to understand their impacts on the fire performance. In this study, various test variables were studied, including the coating thickness (3mm), fireproof filler content (5%, 10%, and 15%), foam content (5%, 10%, 20%, and 30%), concentration of foam (foaming agent: water ratios of 1:40, 1:30, and 1:20). The experimental results show that the fire-resistant lacquer mixtures incorporating 15% of perlite and 5% of bottom ash exhibited the best fire performance among the samples, which registered temperature of about 30% and 49% lower than that of the control sample, respectively. The results of fire resistance test for the H-shaped steel column show that the fire-resistant lacquer containing 15% perlite conformed well to the requirement of CNS12514. On the other hand, the results of TG/ DTA analysis indicated the effectiveness of using fireproofing materials that were produced in the study. Additionally, the XRD analysis results show that the addition of fire-resistant filler not only enhanced the content of silicon dioxide in the carbonized layer but also improved the fire resistance of the carbonized layer effectively. Furthermore, the FTIR results show that the addition of fire-resistant filler increased the intensity of the C = O bond, resulted in the enhancement of the degree of the carbonization in the system.
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