摘要
常压条件下,合成高分子量高邻位热塑性酚醛树脂。考察苯酚与多聚甲醛加成缩合反应过程中原料配比、催化剂含量、反应温度因素对热塑性酚醛树脂结构性能的影响,用凝胶渗透色谱仪、核磁共振谱仪对树脂的结构进行分析,测定了树脂的软化点、游离酚含量、凝胶时间、流动距离。制备了软化点126℃、重均分子量11632、邻对位值3.49、游离酚质量分数2.76%、凝胶时间12s、流动距离39mm的高分子量高邻位热塑性酚醛树脂,树脂产率为94%。
The high molecular weight and high-ortho thermoplastic phenolic resin was synthesized by using paraformaldehyde and excessive phenol as reactants under normal pressure condition. The influ- ences of various parameters such as the ratio of raw materials, percentage of the catalysts, reaction temperature on the properties of the resultant phenolic resin were investigated. The soften point, the amount of free phenol, gelation time of the resin were measured. In addition, gel permeation chroma- tography （GPC） analysis, nuclear magnetic resonance spectroscopy （NMR） analysis was also used to characterize the structure of the resin. The high molecular weight and high-ortho thermoplastic phe- nolic resin with a softening point of 126℃ ,the weight average molecular weight of 11632,O/P （or- tho-/para-） value of 3.49, free phenol mass fraction of 2.76%, gelation time of 12s, flowing distance of 39cm and a yield of 94% was synthesized successfully.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2013年第2期83-86,共4页
Journal of Materials Engineering
关键词
酚醛树脂
高分子量
高邻位
phenolic resin
high molecular weight
high-ortho
作者简介
潘艳平（1984-），女，硕士，主要从事酚醛树脂及衍生制品的研究，E-mail：panyanping_0605@yahoo．com．cn
刘春玲（1964-），女，教授，主要从事功能碳材料和高分子材料的研究，联系地址：陕西省陕西师范大学长安校区化学化工学院165信箱（710062），E-mail：clliutt@snnu．edu．cn
