中国塑料 ›› 2013, Vol. 27 ›› Issue (01): 32-35.DOI: 10.19491/j.issn.1001-9278.2013.01.007

• 材料与性能 • 上一篇    下一篇

高羟甲基低游离醛甲阶酚醛树脂的制备

杨莹,王汝敏,杨国武,王德君   

  1. 西北工业大学理学院应用化学系,陕西西安710129
  • 收稿日期:2012-08-02 修回日期:2012-09-23 出版日期:2013-01-26 发布日期:2020-11-12

The Preparation of resol Containing High Methylol Group and Low Free Formaldehyde Content

YANG Yin,WAND Rumin,YANG Guowu,WANG Dejun   

  1. Department of Applied Chemistry,School of Science, Northwestern Polytechnical University,Xi' an, 710129,China
  • Received:2012-08-02 Revised:2012-09-23 Online:2013-01-26 Published:2020-11-12

摘要: 本文采用醛过量,碱催化制备甲阶酚醛树脂,根据正交试验法设计不同的实验方案,并通过盐酸羟胺法和碘量法分别滴定每组合成树脂中的游离醛含量和羟甲基含量,最终确定出制备高羟甲基低游离醛甲阶酚醛树脂的最佳工艺,即反应温度为80℃,甲醛与苯酚比为1.2,催化剂与苯酚的摩尔比为0.025,时间为90min。并通过红外分析进一步确定甲阶酚醛树脂中高的羟甲基含量。

关键词: 酚醛树脂, 羟甲基, 低游离醛, 正交试验

Abstract: A-stage phenolic resin was synthesized with excessive formaldehyde and alkali catalyst in this paper. According to orthogonal test method, different experimental design was getted.The content of methylol group and free formaldehyde was investigated by hydroxylamine hydrochloride and iodometric methods,aiming at optimum technology,which is reaction temperature 80℃,reactant molar ratio 1.2,the molar ratio of catalyst and phenol 0.025,reaction time 90 min. The FTTR analysis further show that a large number of methylol group was existed in resol.

Key words: phenolic resin, high methylol group;low free formaldehyde, orthogonal experiment

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