17-03-2022 дата публикации
Номер: US20220080616A1
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 S, wood pretreatment, step S, wood acetylation treatment, step S, resin impregnating, and step S, hot press molding to obtain a densified wood. 1. A method for manufacturing a transparent heat-insulation building material based on waste wood , comprising the following steps of:{'b': '1', 'step S, wood pretreatment comprising the following steps{'b': 1', '1, 'step S., ventilating and drying the waste wood at normal temperature until the water content is 3%-7%;'}{'b': 1', '2, 'step S., immersing the dried waste wood in a hydrogen peroxide solution, and heating; and'}{'b': 1', '3', '1', '2, 'step S., adding a complexing agent solution into the solution obtained in the step S., heating, then adding a buffering agent solution, stirring, and reacting for 0.8 h-1.2 h, taking out the reacted wood, washing and drying until the water content is 3%-7%, to obtain the pretreated wood;'}{'b': '2', 'step S, wood acetylation treatment comprising the following steps{'b': 2', '1, 'step S., loading the pretreated wood into a pressure vessel, and evacuating until a degree of vacuum is 0.75 atm-0.85 atm;'}{'b': 2', '2, 'step S., adding acetylation fluid into the pressure vessel, while reducing the pressure of the vessel to the degree of vacuum of less than or equal to 0.7 atm, and keeping for 3-4 h; and'}{'b': 2', '3, 'step S., pressurizing the pressure vessel until the gauge pressure is 10 atm, raising the temperature to 100° C.-130° C., and keeping for 1-2 h;'}{'b': '3', 'step S, resin impregnating comprising the following steps{'b': 3', '1, 'step S., adding 4-6 parts by mass of antimony tin oxide nanoparticles into 25-30 parts by mass of a methyl methacrylate monomer solution, and heating to 75° C.-85° C.; then adding 60-65 parts by ...
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