5 results about "Green wood" patented technology

The invention discloses a preparation method and application of a wood nanocellulose ternary composite preservative film, and belongs to the technical field of biomass nanocellulose functional materials. Lignin and nanocellulose components are separated from peanut shells by using a ternary eutectic solvent, the novel green wood nanocellulose ternary composite fresh-keeping liquid is prepared by blending chitosan natural macromolecules, a wood nanocellulose ternary composite film can be formed on the surfaces of fruits and vegetables, and a good fresh-keeping effect is achieved. Meanwhile, the preparation method provided by the invention is simple, and the prepared film has excellent mechanical properties and stability, and can effectively delay ripening, aging and water loss of fruits, so that the luster and freshness of the fruits are maintained, the storage capacity of fresh fruits and vegetables is improved, and the film has a wide application prospect. In addition, the used deep eutectic solvent is very environment-friendly, meets the standard of green chemical production, and has good practical application value.

The application discloses a preparation method of a multi-level pore carbon material by using nodule. The method comprises the following steps: (1) cultivating biomass and green wood mold together, cleaning the biomass with deionized water for several times, and drying the biomass to obtain a biomass precursor; (2) mixing the nodule and the biomass precursor obtained in the step (1) together, grinding the mixture, and loading the mixture into a tube furnace to perform carbonization, to obtain a carbonized product; and (3) mixing and grinding the carbonized product obtained in the step (2) with potassium hydroxide, loading the mixture into the tube furnace to perform activation, cleaning the mixture with deionized water until the pH value of the mixture is neutral, and drying the mixture to obtain the multi-level pore carbon material. The multi-level pore carbon material prepared by using the nodule to assist in activating the biomass precursor has the advantages of low cost, ecological environmental protection and simple synthesis steps, is a new method for assisting in activating the multi-level pore carbon by using the biomass nitrogen source, and is beneficial to realizing large-scale commercial production.

The present disclosure provides a method of drying and dyeing wood, the method comprising feeding a green wood having a varying moisture content into an oven and drying the green wood in the oven. The residence time of the biomass in the oven and the temperature of the oven are selected according to a time and temperature profile based on the pre-drying moisture content of the biomass to produce dry surface wood having a moisture content of about 15% or less at the dry surface. The method further includes conveying the dried surface wood to a dyeing chamber and directly dyeing all sides of the dried surface wood after the drying. A system for carrying out the method and a dyed wood product produced according to the method are also contemplated.

The invention discloses a wood fiber green dissociation method based on peroxide. The dissociation method comprises the following steps that a peroxide and a wood fiber raw material are stirred in a solvent, a dissociation product is obtained, and the peroxide is selected from sodium percarbonate. According to the method, partial lignin in an intercellular layer in a wood fiber cell wall of sodium percarbonate is used for transverse permeation and depolymerization, mechanical stirring is combined for longitudinal dissociation of the wood fiber cell wall, and a dissociation product with high lignin content and high crystallinity is prepared under the condition of low power consumption.

The present invention relates to a process for gluing native green wood with a high moisture content (above 20%) for use as building construction material, and to the use thereof on native species, such as roble beech, coigue, lenga beech and rauli beech.