摘要:
This disclosure is directed to methods of separating wood veneer material by property measurements, and thereafter improving the properties of veneer material with property values lower than a target threshold value, until those materials meet or exceed that threshold values. In some aspects of the disclosure, veneer materials are prepared, non-destructively measured, and separated into passing and failing material collections. The failing material collection may then be treated to improve the density and flexural modulus of the material therein. Also disclosed herein are products and materials incorporating the treated veneer materials according to the disclosed methods.
摘要:
The present invention provides a wood preservative formulation comprising an isothiazolone, an organic fungicidal timber decay preservative and an unsaturated carboxylic or sulphonic acid, salt or anhydride thereof. The formulations of the invention are surprisingly effective at protecting wood and other cellulosic substrates, in particular at providing prolonged protection against in-service surface staining. The invention also provides methods for treating wood and other cellulosic substrates with said formulations.
摘要:
A composite wood product in accordance with a particular embodiment of the present technology includes a composite substrate and a sealant disposed within a surface portion of the substrate. The substrate includes wood and a binder. The sealant includes photoresponsive molecules present within the surface portion of the substrate at an average concentration greater than 1000 parts per million. In response to a 120-day exposure at 7 inches separation distance to a UV lamp with a UVA (315-400 nm) output of 13.6 W and a UVB (280-315 nm) output of 3.0 W, a CIELab b* value of the substrate decreases by a first amount, a CIELab b* value of the sealant increases by a second amount, and a CIELab b* value of the overall wood product decreases by an amount less than the first amount, increases by an amount less than the second amount, or is unchanged.
摘要翻译:根据本技术的特定实施例的复合木制品包括复合基材和设置在基材的表面部分内的密封剂。 基材包括木材和粘合剂。 密封剂包括存在于基材表面部分内的光响应分子,平均浓度大于1000ppm。 响应于距离UVS(315-400nm)输出为13.6W和UVB(280-315nm)输出为3.0W的UV灯的距离为7英寸的120天曝光,CIELab b *值为 衬底减少第一量,密封剂的CIELab b *值增加第二量,并且总木制品的CIELab b *值减少小于第一量的量,增加小于 第二数量或不变。
摘要:
A method for imparting brown and natural colorants to wood treated with micronized wood treatments, by injecting into the wood a a salt of lignosulfonate and a salt of humic acid or derivatives thereof in a total amount that is greater that 0.02 pounds total per cubic foot of wood, the quantity of salts of lignosulfonates and salts of humic acids or derivatives thereof being sufficient to impart a brown or dark color to the treated wood.
摘要:
A process which limits the loss of wood substances, brightness and tall oil in wood chips during storage. The process involves treating wood chips with a dilute aqueous solution of sodium bisulfite and a phenol. This treatment effectively prevents chip pile heating and microbial growth and thus limits chip deterioration and brightness loss while preserving tall oil. The process is also effective with any other moist plant-derived raw material.
摘要:
A delignified wood material is formed by removing substantially all of the lignin from natural wood. The resulting delignified wood retains cellulose-based lumina of the natural wood, with nanofibers of the cellulose microfibrils being substantially aligned along a common direction. The unique microstructure and composition of the delignified wood can provide advantageous thermal insulation and mechanical properties, among other advantages described herein. The thermal and mechanical properties of the delignified wood material can be tailored by pressing or densifying the delignified wood, with increased densification yielding improved strength and thermal conductivity. The chemical composition of the delignified wood also offers unique optical properties that enable passive cooling under solar illumination.
摘要:
A synergistic aqueous wood preservative composition comprising a copper compound and penflufen. The copper compounds of the compositions of the invention may be soluble, partially solubilized or micronized particles. The penflufen of the compositions of the invention may be solubilized, emulsified or particulate. The wood preservative compositions of the present invention are surprisingly provided as stable dispersions and confer surprising and unexpected resistance to treated wood and wood products.