This application relates to the technical field of building material processing, and more particularly, to a method for manufacturing a transparent heat-insulation building material based on waste wood. The method includes the following steps of: step S1, wood pretreatment, step S2, wood acetylation treatment, step S3, resin impregnating, and step S4, hot press molding to obtain a densified wood.

A method for improving the fire resistance of a cellulose material comprises mixing boric acid with methanol to form a boric acid ester, combining the borate ester with magnesium sulfate to form a low viscosity magnesium borate sulfate solution, treating the cellulose material with the magnesium borate sulfate solution, and heating the treated cellulose material to evaporate remaining alcohol and solvent to form a crystals of a complex mixture containing combinations of magnesium sulfate, boric acid, magnesium borate, magnesium borate sulfate and their hydrates.

A wood treatment method for reducing fungal growth utilizes a treatment solution comprising an aldehyde, a carrier solvent, an organic co-solvent, at least one surfactant, and at least one acid, base, or salt. In embodiments, the carrier solvent may comprise water and the organic co-solvent may comprise an alcohol or acetone. The aldehyde is impregnated into the wood, where it reacts with thiamine and other amino acids to promote cross-linking, reducing the porosity of the wood and thereby reducing the ability of various microbes and fungi to access the interior of the wood as a nutrient source.

A method for producing an ultra-stable and enhanced solid wood flooring for under-floor heating via surface compression technique includes: subjecting, while subjecting a solid wood to surface compression and enhancement, the solid wood to primary stabilization treatment by controlling a temperature of a hot pressing plate to obtain a compressed enhanced solid wood; putting the compressed enhanced solid wood into a heat treatment tank; and subjecting the compressed enhanced solid wood to secondary stabilization treatment by controlling a pressure and a temperature of steam or air in the heat treatment tank and a treatment time to obtain a finished product. The ultra-stable surface-compressed enhanced solid wood flooring produced by the method features high dimensional stability, low set-recovery after water absorption, and desired moisture and heat resistance.

A method for producing wood material boards with reduced emission of volatile organic compounds (VOCs), including: a) producing woodchips from suitable timbers; b) heat-treating at least one portion of the woodchips at a temperature between 150° C. and 300° C. for a period of 1 to 5 hours; c) crushing the wood chips that are not heat-treated and at least one portion of the heat-treated woodchips by machining in order to obtain wood shavings or by solubilizing in order to obtain wood fibers; d) gluing the wood shavings or wood fibers with at least one binding agent; e) applying the glued wood shavings onto a transport belt while forming a multi-layered shavings cake or applying the glued wood fibers onto a transport belt while forming a single-layer fiber cake; and f) compressing the shavings cake or the fiber cake to form a wood material board.

A wood substrate or member is included, having an increased density with respect to natural, untreated wood. The process includes drying the wood prior to application of heat and pressure, which are controlled to reduce or eliminate color change on a surface of the wood member where heat and pressure are applied.

A process for the production of OSB wood-based panels including: a) producing wood strands from suitable wood logs; b) treating at least part of the wood strands with steam at a temperature between 80° C. and 120° C. and a pressure between 0.5 bar and 2 bar; c) drying the steam-treated wood strands; d) gluing the steam-treated and dried wood strands and, optionally, gluing the non-steam treated wood strands with at least one binder; e) scattering the glued wood strands onto a conveyor belt; and f) pressing the glued wood strands into an OSB wood-based board. The steam treatment takes place after the wood strands have been produced and made available, or after the wood strands have been sifted and separated according to the use of the wood strands for the middle and top layers of the panel. Also, an OSB wood-based panel made using the process.

Near InfraRed NIR technology, including NIR cameras and detectors, is used to accurately identify surface irregularities on a surface of a veneer sheet or other wood product. Based on the identified surface irregularities for a given wood product, one or more actions are taken with respect to wood product or production process to ensure the wood product is put to the most efficient, effective, and valuable use.

A method (10) for ethanol-based extraction of soluble wood components. Wood is prepared (12), and chipped (18) to provide wood chips. The wood chips and a liquid are mixed (20) in a container to provide a mixture. After waiting (22) for a specified time, RF energy is applied (26) to the mixture while controlling (28) at least one an RF power level, a temperature of the mixture, a time of application of the RF energy, or a speed of a pump which is circulating the liquid in the mixture. The mixture is then cooled (30), the liquid and the components are removed (32) from the container, and are filtered (36) to provide a filtered extract. The wood may be heated (14) such as by charring and/or toasting before being chipped. Oxygen may be added (34) to the liquid and the components removed from the container before being filtered.

A method of producing a modified wood product is disclosed. The method comprises heating a resin impregnated wood product in a reactor, the resin impregnated wood product comprising source wood impregnated with a resin composition comprising resin, the heating being so as to substantially cure the resin, thereby to produce the modified wood product. The method comprises, during the heating of the resin impregnated wood product in the reactor, introducing water into the reactor. A reactor and a modified wood product are also disclosed.