Modifier for wood size stability and application thereof

The invention discloses a wood size-stable modifier which is composed of the following components in percentage by mass: 7%-12% of magnesium chloride, 1%-2% of sodium hydroxide, 3%-5% of tetraethoxysilane, 4%-7% of polyethylene glycol, 1%-1.5% of sodium lignin sulfonate and the balance of water. And the modifier for wood size stability is used for improving the wood size stability. According to the modifier for stabilizing the wood size, the adopted raw materials are cheap, the effect of magnesium chloride on improving the wood size stability is improved through the synergistic effect of all the raw materials, and then a modification application method which is good in stability and low in cost is obtained. 本发明公开了一种木材尺寸稳定的改性剂，按照质量百分比，由以下组分组成：氯化镁7％～12％，氢氧化钠1％～2％，正硅酸乙酯3％～5％，聚乙二醇4～7％，木质素磺酸钠1～1.5％，余量为水；以及所述木材尺寸稳定的改性剂用于改善木材尺寸稳定性。本发明木材尺寸稳定的改性剂采用的原料便宜，利用各原料之间协同作用，提高氯化镁对木材尺寸稳定性改良的效果，进而得到一种稳定性好又低廉的改性应用方法。