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复合型酚醛树脂固化剂的研究(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2015年01期
Page:
109-113
Column:
研究论文
publishdate:
2015-01-30

Article Info:/Info

Title:
Study on fast curing PF resin added by compound curing agent
Article ID:
1000-2006(2015)01-0109-05
Author(s):
CHEN Yuzhu CHU Fuxiang* FAN Dongbin QIN Tefu
Key Laboratory of Wood Science and Technology of State Forestry Administration, Research Institute of Wood Industry,Chinese Academy of Forestry, Beijing 100091, China
Keywords:
phenol-formaldehyde resin compound curing agent fast curing
Classification number :
TQ314
DOI:
10.3969/j.issn.1000-2006.2015.01.020
Document Code:
A
Abstract:
In order to meet fast curing requirements of PF resin without pot life and wet shear strength,compound curing agents were obtained by combination of single curing agent, including methylolureas(MMU), propylene carbonate(PC), sodium carbonate(Na2CO3), magnesium hydrate(Mg(OH)2).By comparing the properties of PF resins added with single with the compound curing agents, it indicated that: Although single curing agent improved the on wet shear strength of plywood, but pot lifes was too short to meet the production requirement of at least 4 hours. The compound curing agent of MMU+Na2CO3 showed obvious effect on fast curing PF resin by shortening the hot pressing time from 330 s to 270 s, and the plywood wet shear strength reached the class Ⅰ of Chinese industry standard(≥0.7 MPa). The compound curing agent of MMU+Na2CO3 was a suitable fast curing agent which could be used in plywood production.

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Last Update: 2015-01-31