常温下酚醛树脂的可发性研究 |
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引用本文: | 韩啸,蔡然,唐鑫,刘计福,赵占奎,李月明,李东风.常温下酚醛树脂的可发性研究[J].应用化工,2010,39(3):397-400. |
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作者姓名: | 韩啸 蔡然 唐鑫 刘计福 赵占奎 李月明 李东风 |
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作者单位: | 1. 长春工业大学,化学与生命科学学院,吉林,长春,130012 2. 长春工业大学,材料科学与工程学院,吉林,长春,130012 3. 北京索利特新型建筑材料有限公司,北京,100000 |
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摘 要: | 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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关 键 词: | 酚醛树脂 泡沫材料 常温发泡 固化剂 |
Study on the foamable of phenolic resin at room temperature |
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Abstract: | In this paper,phenolic resin at room temperature for the most appropriate conditions for foaming.The results showed that molar ratio of formaldehyde to phenol 1.8 to 2.0,the resin viscosity at the 2~ 4 Pa·s(36 ℃),resin which solid content of 78%~ 81% of the A class of phenolic resin foam best at room temperature;ambient temperature at 17~25 ℃,the most appropriate foaming at room temperature;blowing agent usage and the relationship between the performance of foam body are:increased use of foam,foam density and compressive strength,surface view of lower-fat,foam dosage of more than 14.0%,the little change in the density of foam.The ambient temperature is different from the kinds and proportions of curing agents are also different. |
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Keywords: | phenolic resin foam foaming at room temperature curing agent |
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