详细信息
文献类型:期刊文献
中文题名:复合型酚醛树脂固化剂的研究
英文题名:Study on fast curing PF resin added by compound curing agent
作者:陈玉竹[1] 储富祥[1] 范东斌[1] 秦特夫[1]
第一作者:陈玉竹
机构:[1]中国林业科学研究院木材工业研究所,国家林业局木材科学与技术重点实验室,北京100091
年份:2015
卷号:39
期号:1
起止页码:109-113
中文期刊名:南京林业大学学报:自然科学版
收录:CSTPCD;;北大核心:【北大核心2014】;CSCD:【CSCD2015_2016】;
基金:国家自然科学基金项目(31200441);中央级公益性科研院所基本科研业务专项基金项目(CAFINT2013K03);“十二五”国家科技支撑计划(2012BAD24B04)
语种:中文
中文关键词:酚醛树脂;复合型固化剂;快速固化
外文关键词:phenol-formaldehyde resin ; compound curing agent; fast curing
分类号:TQ314
摘要:为了研究复合型固化剂对酚醛树脂(PF)适用期、胶接性能的影响,同时实现酚醛树脂的快速固化,在分析添加了单组分固化剂羟甲基脲(MMU)、碳酸丙烯酯(PC)、碳酸钠(Na2CO3)和氢氧化镁(Mg(OH)2)的酚醛树脂相关性能指标的基础上,对单组分固化剂进行复配得到了复合型固化剂,并对复配前后的相关性能指标进行了分析。结果表明:单组分固化剂可以提高PF树脂的胶合强度,但不能满足胶合板生产至少4 h适用期的要求;MMU+Na2CO3复合固化剂不仅在7 h内黏度变化较小,而且可以显著提高PF树脂的固化速度,使胶合板的热压时间由330 s缩短至270 s,且产品质量达到国家标准中Ⅰ类胶合板胶合强度(≥0.7 MPa)的要求。试验表明,MMU+Na2CO3是一种可用于胶合板生产的PF树脂快速固化剂。
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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