| Summary: | 碩士 === 國立嘉義大學 === 林業暨自然資源研究所碩士班 === 93 === The study was to explore 10 kinds of commerce decorative boards, including calcium silicate boards, paper overlaid gypsum boards, fiber cement boards, cement-bonded particleboards, rock wool boards, vermiculite boards, fancy thermosetting resin board, thermosetting resin hard foam-plates, fire-retardant fibrous boards, glass wool boards, and etc, by using the method of surface combustibility, Thermogravimetric analysis (TGA), thermal insulation, combustion properties, and elements examination. The motivation of the study was to realize the properties of thermal insulation and combustion. It is hopefully to obtain the damages that cause to human being and affect in natural environment, and to as a reference to the relative decorated workers. The results obtained are summarized as follows：
After testing with the method of surface combustibility, calcium silicate boards, paper overlaid gypsum boards, fiber cement boards, vermiculite boards, fire-retardant fibrous boards, and glass wool boards all passed the standard of the 3rd grade according to CNS 6532, but the cement-bonded particleboards, rock wool boards, fancy thermosetting resin boards, and the thermosetting resin hard foam-plates didn’t.
From the results of the TGA tests, the char of glass wool boards was the highest, followed by the vermiculite boards, the paper overlaid gypsum boards, the fiber cement boards, the fire-resistant fibrous boards, the rock wool boards, the calcium silicate boards, the cement-bonded
Particleboards, the fancy thermosetting resin boards, and the lowest was the thermosetting resin hard foam-plates.
From the tests of thermal conductivity measurement, the results obtained that the vermiculite boards had the highest thermal conductivity, and followed by the fiber cement boards, the fancy thermosetting resin board, the rock wool boards, the cement-bonded particleboards, the fire-resistant fibrous boards, the calcium silicate boards, the paper overlaid gypsum boards, and the last was the thermosetting resins hard foam-plates, which had the lowest thermal conductivity. However, the inner structure of glass wool boards is too fluffy to firm the probe，the thermal conductivity can not be measured. The above results indicated that the thermosetting resin hard foam-plates were the best properties of heat insulations, but the vermiculite boards were the worst.
To ground on the combustion gas test, the thermosetting resin hard foam-plates made the quickest increasing and raising of carbon dioxide in 100 sec, and then the calcium silicate boards, fiber cement boards, fire-resistant fibrous boards, and the glass wool boards.As the yield of carbon monoxide, there was 220 ppm of the thermosetting resin hard foam-plates, the highestamong all, and there were 60 ~70 ppm of the calcium silicate boards, paper overlaid gypsum boards, rock wool boards and fire-resistant fibrous boards; and there was 50 ppm of vermiculite boards and fancy thermosetting resin board, and there was only 10 ~20 ppm of others. As the yield of nitrogen oxides, there was the highest 80 ppm of thermosetting resin hard foam-plates, and then 60 ppm of glass wool boards, and there was only 20 ~ 40 ppm of the others, but only the thermosetting resin hard foam-plates produce 22.5 ppm of sulfur oxides.
Measuring the content of surplus elements from the boards burning around, it was found that in most burned boards, the content elements were decreased, but for fancy thermosetting resin board and thermosetting resin hard foam-plates, the element carbon was increased. After the burning test, the element hydrogen of thermosetting resin hard foam-plates was increased. For the fire-resistant fibrous boards, the element sulfur was also increased.
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