國立臺灣科技大學材料科學與工程系 ; 學位：碩士 ; 指導教授：邱顯堂 ; 發泡酚醛樹脂因為具質輕、防火、隔熱、隔音、低導熱、絕緣的性質而有廣泛的應用，本研究主要針對酚醛樹脂發泡後，經由燒結等步驟製成高耐熱性、耐油性、輕量化之材料。 本研究藉由不同組成比例之酚醛樹脂來控制發泡密度及結構，其後再經由不同控溫程序之慢速低溫燒結氧化，製備出一系列發泡酚醛樹脂氧化物。 經實驗發現，可以藉由調配不同發泡比例來控制自由發泡倍率再2.5倍至5.5倍之間。隨著燒結溫度的升高，材料的密度和三點彎曲強度皆有逐漸減少的趨勢；而體積收縮率則是和燒結溫度的升高而有逐漸增加的傾向，由熱重損失分析儀器可以看出隨著燒結溫度的升高，材料的耐熱性也有越佳的趨勢。而藉由控制不同發泡倍率，能歸納出隨著發泡倍率的增加，其三點彎曲強度和密度都有減少的趨勢；其耐熱性和體積收縮率會隨著發泡倍率的增加而增加。無論是未燒結還是燒結後的樣品，都有極高LOI值，且全都為UL 94 V-0等級。 Phenol formaldehyde resin foams are known for its low density, fire-resistance, low thermal conductivity, good soundproofing, and thermal insulation which have a wide variety of applications. In this research, we aim to make a material that has low density, high heat resistance, and good oil resistance properties by sintering phenolic foam with low temperature. Through the oxidation process with various temperatures and heating rates, a series of resin oxides comprised of different compositions were made. The free foam expansion ratios were found between 2.5 and 5.5 with different formulas of phenolic foams. The densities and bending stresses of oxidized resins decreased while the volume shrinkages increased with the raising sintering temperatures. Thermal gravimetric analysis(TGA) was used to investigate the thermal stabilities of phenolic foams, and the results showed that the stabilities improved with the higher oxidation temperature. Furthermore, the densities and bending stresses declined while the thermal resistances and volume shrinkages increased with larger foam expansion ratio. The phenolic resin foams are found with high Limiting Oxygen Index(LOI) , and met the V-0 level of UL 94, no matter the resins were sintered or not.