一种复合改性的速生木材及其复合改性方法

本发明提供了一种复合改性的速生木材及 其复合改性方法。所述复合改性方法，包括以下 步骤：1)取速生木材，在甲苯、乙醇和丙酮的混合 溶液中抽提后，取出备用；2)将步骤1)处理后的 所述速生木材在处理液中真空浸渍，然后常压浸 渍，依次交替重复所述真空浸渍和所述常压浸渍 2-3次；其中，所述处理液由铝溶胶、去离子水和 糠醇均匀混合而成；3)利用铝箔纸包裹已浸渍处 理的所述速生木材，在80-120℃的温度下固化， 然后去除所述铝箔纸，继续干燥直至恒重，即得。 本发明改性方法将物理改性技术和化学改性技 术进行有机结合，使改性后的木材具备高档木材 颜色深的特点，具有较好的尺寸稳定性、热稳定性和表面防水性，且制备方法简单，成本低

This invention provides a composite-modified fast-growing wood and its composite modification method. The composite modification method includes the following steps: 1) Take fast-growing wood, extract it in a mixed solution of toluene, ethanol and acetone, then remove it for standby use; 2) Subject the fast-growing wood treated in step 1) to vacuum impregnation in a treatment solution, followed by atmospheric impregnation, and alternately repeat the vacuum impregnation and atmospheric impregnation for 2 to 3 times, wherein the treatment solution is uniformly prepared from aluminum sol, deionized water and furfuryl alcohol; 3) Wrap the impregnated fast-growing wood with aluminum foil, cure it at a temperature of 80-120°C, then remove the aluminum foil, and continue drying until reaching a constant weight, thereby obtaining the target product. The modification method of this invention organically combines physical modification technology and chemical modification technology, enabling the modified wood to have the dark color feature similar to high-grade wood, and possessing good dimensional stability, thermal stability and surface water resistance. Moreover, the preparation method is simple and has low cost.