高温岩棉用水溶性钼酚醛树脂胶的研制

Development of water soluble Mo-phenolic formaldehyde resin used for high temperature rock wool

以Ba(OH)2为催化剂,合成了水溶性钼酚醛树脂Mo PF,研究了原料(苯酚、甲醛、钼酸铵和Ba(OH)2)配比、反应温度和时间对合成的影响,并用红外光谱、热重分析和差热分析对所粘接岩棉的结构和耐热性进行考察。结果表明,当m甲醛∶m苯酚∶m钼酸铵=3∶1∶0.54,60℃恒温反应1 h后升温至70℃,并于70℃恒温反应2 h,Mo PF所粘接岩棉的耐热性与纯酚醛树脂(PF)相比有明显提高。初始分解温度为450℃,比PF-岩棉提高190℃;885℃时失重8%,比PF-岩棉减少22%;红外光谱表明,钼元素以钼氧键的形式引入到PF结构中。

Water soluble Mo-phenolic formaldehyde（ Mo PF） resin was synthesized with Ba（ OH）2as catalyzer. Effect of proportion of raw materials（ including phenol,formaldehyde,ammonium）,reaction temperature and time were studied. Meanwhile,the structure and thermal resistance of the rock wool were investigated by fourier transform infrared spectroscopy,thermogravimetric and differential scanning calorimetry analysis. When m（ formaldehyde） / m（ phenol） / m（ ammonium） = 3∶ 1∶ 0. 54,the reaction temperature and time is 60 ℃ for 1 h and 70 ℃ for 2 h,the heat resistance of Mo PF is obviously improved compared with pure PF. The initial decomposition temperature is 450 ℃,which is increased by 190 ℃ compared with the PF-rock wool. The weightlessness is 8%,which is decreased 22% at 885 ℃. The bond exist between Mo and PF from the IR spectrum analysis.