杉木液化液交联苯酚-甲醛合成新型木材胶黏剂

doi:10.11707/j.1001-7488.20140121

林业科学 ›› 2014, Vol. 50 ›› Issue (1): 140-148.doi: 10.11707/j.1001-7488.20140121

杉木液化液交联苯酚-甲醛合成新型木材胶黏剂

孙瑾¹, 林锐航², 李晓增², 王晓波¹, 朱晓枫¹, 徐恩光¹

1. 华南农业大学林学院木材科学与工程系广州 510642;
2. 广州市质量监督检测研究院广州 510110

收稿日期:2013-02-21 修回日期:2013-05-27 出版日期:2014-01-25 发布日期:2014-01-25

A Novel Plywood Adhesive Synthesized by Phenol-Formaldehyde Crosslinking Alkaline Chinese Fir Liquid

Sun Jin¹, Lin Ruihang², Li Xiaozeng², Wang Xiaobo¹, Zhu Xiaofeng¹, Xu Enguang¹

1. Department of Wood Science and Engineering, College of Forestry, South China Agricultural University Guangzhou 510642;
2. Guangzhou Quality Supervision and Testing Institute Guangzhou 510110

Received:2013-02-21 Revised:2013-05-27 Online:2014-01-25 Published:2014-01-25
Contact: 林锐航

摘要/Abstract

摘要： 探讨一种无污染、无废弃物排放的胶黏剂合成工艺——碱性的杉木液化物与少量的苯酚、甲醛合成一种高性能的木材胶黏剂。检测胶黏剂的游离苯酚和游离甲醛、胶合板的胶合性能和甲醛释放量，并与工业用酚醛树脂进行性能比对。结果表明：杉木液化物-苯酚甲醛胶黏剂具有较低的游离苯酚和游离甲醛，其制得的胶合板具有更好的胶接性能和更低的甲醛释放量。红外分析结果表明：杉木液化物与苯酚、甲醛发生了化学反应，并生成了高聚物化学结构。DSC结果显示：杉木液化物-苯酚甲醛胶黏剂需要更高的固化温度，但不影响其实用性。

关键词: 改性酚醛树脂, 液化, 胶接性能, 结构分析, 固化

Abstract: A novel composite adhesive was synthesized in our experiment, which revealed the new zero-waste and zero-pollution adhesive synthetic by blending of alkaline Chinese fir (Cunninghamia lanceolata) liquid with a small amount of phenol-formaldehyde. The synthetic Chinese fir-based adhesive showed better physical properties of low free phenol as well as free formaldehyde content compared with control PF resin. Plywood of three layers bonded with the synthesized adhesives was made to determine bond strength and formaldehyde emission. The Chinese fir-based adhesive has been proved to reduce the formaldehyde emission significantly without decreasing the bond strength at all. The FT-IR analysis confirmed the polymer chemistry structure has been built by the Chinese fir liquid reacting with formaldehyde and phenol. The DSC results indicated that although the Chinese fir-based adhesive's curing need higher temperature than the PF resin, the higher curing temperature hardly cripple the availability of Chinese fir-based adhesive.

Key words: modification of phenol-formaldehyde resin, liquefaction, bonding properties, structural analysis, curing

中图分类号:

TQ437

孙瑾, 林锐航, 李晓增, 王晓波, 朱晓枫, 徐恩光. 杉木液化液交联苯酚-甲醛合成新型木材胶黏剂[J]. 林业科学, 2014, 50(1): 140-148.

Sun Jin, Lin Ruihang, Li Xiaozeng, Wang Xiaobo, Zhu Xiaofeng, Xu Enguang. A Novel Plywood Adhesive Synthesized by Phenol-Formaldehyde Crosslinking Alkaline Chinese Fir Liquid[J]. Scientia Silvae Sinicae, 2014, 50(1): 140-148.

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杉木液化液交联苯酚-甲醛合成新型木材胶黏剂

A Novel Plywood Adhesive Synthesized by Phenol-Formaldehyde Crosslinking Alkaline Chinese Fir Liquid

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