纳米氧化镁催化合成木素-酚醛树脂的工艺及性能

王钧; 李改云; 范东斌

doi:10.19455/j.mcgy.20170207

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纳米氧化镁催化合成木素-酚醛树脂的工艺及性能
Preparation and Performance of Lignin-Phenol-Formaldehyde Resin Catalyzed with Nanometer Magnesium Oxide
1. 中国林科院木材工业研究所
2. 国家林业局木材科学与技术重点实验室
2017年31卷第2期页码：34-37
DOI： 10.19455/j.mcgy.20170207

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[1]王钧,李改云,范东斌.纳米氧化镁催化合成木素-酚醛树脂的工艺及性能[J].木材工业,2017,31(02):34-37.

WANG Jun, LI Gai-yun, FAN Dong-bin. Preparation and Performance of Lignin-Phenol-Formaldehyde Resin Catalyzed with Nanometer Magnesium Oxide[J]. China Wood Industry, 2017,31(2):34-37.
[1]王钧,李改云,范东斌.纳米氧化镁催化合成木素-酚醛树脂的工艺及性能[J].木材工业,2017,31(02):34-37. DOI： 10.19455/j.mcgy.20170207.

WANG Jun, LI Gai-yun, FAN Dong-bin. Preparation and Performance of Lignin-Phenol-Formaldehyde Resin Catalyzed with Nanometer Magnesium Oxide[J]. China Wood Industry, 2017,31(2):34-37. DOI： 10.19455/j.mcgy.20170207.

摘要

以纳米氧化镁（MgO）为催化剂,合成酶解木质素含量为50%的木素-酚醛（LPF）树脂,探究甲醛/苯酚（F/P）量比、MgO添加量、NaOH/P量比等参数对树脂凝胶时间、储存期及试件胶合强度的影响规律。结果表明,LPF树脂的优化合成工艺是:F/P量比为1.9,MgO添加量为1.5%,NaOH/P量比为0.9,制备树脂的凝胶速度较普通树脂提高30%以上,试件胶合强度满足GB/T 9846-2015中I类胶合板要求。

Abstract

Nano-MgO was used as a catalyst to prepare lignin-phenol-formaldehyde（LPF） resin which was composed of 50% enzymatic hydrolysis lignin.The effects of synthesis parameters were studied including:molar ratio of formaldehyde and phenol（F/P）, nano-MgO usage and molar ratio of sodium hydroxide to phenol（NaOH/P） on gel time and storage life of the LPF resin and bonding strength of plywood samples bonded with the LPF resin.The results indicated that optimum manufacturing technology were 1.9 molar ratio of F/P, 1.5% of nano-MgO usage and 0.9 molar ratio of Na OH/P.The gel time of the LPF could be shortened by 30%.The bonding strength of the plywood samples bonded with the LPF resin could meet National Standard GB/T 9846-2015 requirement for I-level plywood.