2D树脂整理剂用于杨木板材的改性研究

树脂浸渍是提高速生木材力学性能、改善尺寸稳定性的重要技术手段。以纺织整理剂2D树脂为交联改性剂、聚乙二醇（PEG-1000）为充胀剂，通过真空加压浸渍对速生杨木实木板材进行改性处理，研究2D树脂的浸渍-干燥-固化工艺及其对改性杨木板材的力学性能、干湿尺寸稳定性、漆膜附着力等性能的影响。结果表明：随着2D树脂浸渍时间的延长，木材的质量增加率逐渐提高，弦向和径向硬度增大，木材的干缩湿胀率降低，浸渍处理2 h后趋于平衡。此时，试件的弦向和径向硬度分别为3.318和3.247 kN，分别是素材试件的1.34和1.67 倍；试件的静曲强度和弹性模量分别为114.64和9 930 MPa，分别是素材试件的1.26和1.8倍；试件表面耐磨性和漆膜附着力也得到明显改善。
Resin impregnation is an important technique to improve the mechanical properties and dimensional stability of fast？？growth wood. In this study, fast？？growth poplar lumber was modified by vacuum pressure impregnation using 2D resin as cross？？linking agent, and polyethylene glycol (PEG？？1000) as filling agent. The 2D resin impregnating？？drying？？curing process and its effects on the mechanical properties, dimension stability, coating film adhesion of the modified poplar lumber were studied. The results showed that with the extension of resin impregnating time, the mass percentage gain of the lumber gradually increased, the tangential and radial hardness increased, and wood shrinkage and swelling reduced. The samples were balanced after 2 hours’ treatment. At this point, the tangential and radial hardness of the modified specimens reached 3.318 and 3.247 kN, respectively, that was 1.34 and 1.67 times of the untreated specimens. The modulus of rupture and modulus of elasticity of the modified specimens were 114.64 and 9 930 MPa, respectively, that was 1.26 and 1.8 times of the untreated specimens. The surface wear resistance and film adhesion were also significantly improved