Preparation method of density-controllable compressed wood

The invention discloses a preparation method of density-controllable compressed wood, which comprises a method for compressing wood in an environment with temperature and pressure provided by a hot pressboard, and is characterized in that when the compression process starts, the pressure provided by the hot pressboard adapts to the temperature and water content of the surface layer of the wood; therefore, under the pressure, only the surface layer is compressed; in the compression process, the pressure provided by the hot pressing plate adapts to the temperature and the moisture content of the secondary thickness layer of the wood, so that under the pressure, only the secondary thickness layer is compressed, and the secondary thickness layer is adjacently connected with the compression forming layer. The method can guide the design of an accurate production process, each time period of the compression process can be independently controlled, and the thickness of the compression forming layer can be controlled