玉米淀粉改性UF树脂胶合高含水率单板

时君友

doi:10.19455/j.mcgy.2005.05.005

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玉米淀粉改性UF树脂胶合高含水率单板
Gluing High Moisture Content Veneer with Corn Starch Modified UF Resin
1. 北华大学吉林132013吉林
2005年第5期页码：13-16
DOI： 10.19455/j.mcgy.2005.05.005

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[1]时君友.玉米淀粉改性UF树脂胶合高含水率单板[J].木材工业,2005(05):13-16.

SHI Jun-you. Gluing High Moisture Content Veneer with Corn Starch Modified UF Resin[J]. China Wood Industry, 2005,(5):13-16.
[1]时君友.玉米淀粉改性UF树脂胶合高含水率单板[J].木材工业,2005(05):13-16. DOI： 10.19455/j.mcgy.2005.05.005.

SHI Jun-you. Gluing High Moisture Content Veneer with Corn Starch Modified UF Resin[J]. China Wood Industry, 2005,(5):13-16. DOI： 10.19455/j.mcgy.2005.05.005.

摘要

采用半酯化的玉米淀粉与脲醛树脂（UF）共聚改性,探讨加入量、脲醛树脂的量比、混合比、热压条件等对胶液的黏度、稳定性、固化时间及胶合质量的影响。结果表明:当单板含水率提高到16%,1,8%时,用改性UF树脂生产的多层胶合板,其物理力学性能指标达到GB/T 9846.1,1,2-88中Ⅱ类胶合板的要求,并大幅度地降低了胶合板的制造成本。

Abstract

Generally, moisture content of veneer for plywood bonded with conventional UF resin is required to be less than 8%. In this study, UF resin was modified by copolymerization with semi-esterified corn starch. Effects of amount of semi-esterified corn starch, molar ratio of UF resin, mixture proportion and hot-pressing parameters on glue properties, such as viscosity, stability, curing time and bonding quality, were investigated. The results showed that when moisture content was increased to 16%～18%, physical and mechanical properties of the plywood conformed with the standard of GB/T 9846.1～12-88 and manufacturing cost of the plywood could be reduced.