常温下酚醛树脂的可发性研究
Applied Chemical Industry(2010)
Abstract
研究了酚醛树脂常温发泡的最适宜条件。结果表明,甲醛与苯酚的摩尔比为1.8~2.0,树脂粘度在2~4 Pa.s(36℃),树脂固含量在78%~81%的甲阶酚醛树脂常温发泡效果最好;环境温度在17~25℃时,最适宜常温发泡;发泡剂用量与泡体性能的关系为:发泡剂用量增大,泡沫体表观密度和压缩强度降低,发泡剂用量>14.0%后,泡沫体的密度变化不大。环境温度不同,固化剂的种类与比例也不同。
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Key words
foaming at room temperature,curing agent,phenolic resin,foam
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