林产化学与工业Issue(5)：123-128,6.DOI:10.3969/j.issn.0253-2417.2015.05.020
复合型固化剂对酚醛树脂固化性能的影响
Effect of Hybrid Hardeners on Curing Properties of Phenol-formaldehyde Resin
摘要
Abstract
The gel time, pot life and curing properties of phenol-formaldehyde resin ( PF) resins induced by single curing agents, namely methylolureas (MMU), propylene carbonate(PC), sodium carbonate (Na2CO3), and their hybrid were investigated. The results demonstrated that the gel times of PF resins induced by single curing agent and two kinds of their counterpart hybrid curing agents were shortened by at least 74s. However, the viscosities of PF resins in presence of PC and MMU+PC increased to 18 000 and 9 000 mPa·s from 178 mPa·s in 3h respectively, and the pot lifes were too short to meet the production requirement of 4 hours at least. The curing agents MMU+Na2 CO3 had significant effect on lowering the onset and peak temperature of curing reaction. Thus the aim of fast curing of PF resin, and the needs of production were achieved. Therefore, the curing agent of MMU+Na2 CO3 was suitable for fast curing at lower temperature in plywood production.关键词
酚醛树脂/固化剂/快速固化Key words
phenol-formaldehyde resin/curing agent/fast curing分类
化学化工引用本文复制引用
陈玉竹,范东斌,秦特夫,储富祥..复合型固化剂对酚醛树脂固化性能的影响[J].林产化学与工业,2015,(5):123-128,6.基金项目
国家自然科学基金资助项目(31200441) （31200441）
中国林科院林业新技术所基本科研业务费专项资金(CAFINT2013K03) （CAFINT2013K03）
“十二五”国家科技支撑计划资助(2012BAD24B04) （2012BAD24B04）
