乙二醛-尿素树脂的合成及橡胶木改性应用

胡极航; 刘君良; 范书桐

doi:10.19455/j.mcgy.20200202

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乙二醛-尿素树脂的合成及橡胶木改性应用
Synthesis of Glyoxal-urea（GU） Resin and Its Application in Rubberwood Modification
1. 中国林业科学研究院木材工业研究所
2. 北华大学材料科学与工程学院
2020年34卷第2期页码：6-9
DOI： 10.19455/j.mcgy.20200202

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[1]胡极航,刘君良,范书桐.乙二醛-尿素树脂的合成及橡胶木改性应用[J].木材工业,2020,34(02):6-9.

HU Ji-hang, LIU Jun-liang, FAN Shu-tong. Synthesis of Glyoxal-urea（GU） Resin and Its Application in Rubberwood Modification[J]. China Wood Industry, 2020,34(2):6-9.
[1]胡极航,刘君良,范书桐.乙二醛-尿素树脂的合成及橡胶木改性应用[J].木材工业,2020,34(02):6-9. DOI： 10.19455/j.mcgy.20200202.

HU Ji-hang, LIU Jun-liang, FAN Shu-tong. Synthesis of Glyoxal-urea（GU） Resin and Its Application in Rubberwood Modification[J]. China Wood Industry, 2020,34(2):6-9. DOI： 10.19455/j.mcgy.20200202.

摘要

以不同量比合成乙二醛-尿素浸渍树脂（GU）,开发环保型树脂用于橡胶木改性。结果表明,当乙二醛、尿素的量比（G/L）为1.6时,树脂合成反应完全,其固体含量、黏度、水溶性、储存期等综合性能良好。将该树脂调配成质量分数30%的溶液,用于浸渍处理橡胶木,与未处理材相比,改性材的弹性模量和抗弯强度分别提高了21.5%和32.6%,尺寸稳定性（ASE）达到65.9%,改性效果良好。

Abstract

Glyoxal-urea resins（GU） were synthesized from glyoxal and urea at six ratios respectively, and then used for rubberwood modification. The results showed that at G∶U ratio of 1.6, the resin performed best in the solid content, the viscosity, the water solubility and the storage life. Rubberwood samples were impregnated with the GU resin at a concentration of 30%. Modulus of elasticity（MOE） and modulus of rupture（MOR） of the treated rubberwood samples were increased by 21% and 32.5%, respectively, comparing with untreated control samples. Dimensional stability（ASE） of the treated samples reached 65.9% as well.