METHOD OF MANUFACTURING POLYMER-MODIFIED WOOD
收藏国家林业和草原科学数据中心2023-02-12 更新2024-03-07 收录
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Way production of polymer-modified wood includes harvesting of wood of different grades and drying them. Drying of wood is carried out by means of a special installation, containing a camera with at least one microwave energy unit, at least one infrared heater, vacuum pump, temperature sensors. Into the camera load timber where they are drying wood with the help of vacuum, microwave energy and infrared heating to reach the figure humidity 6%, for this use the frequency of microwave radiation 2450 MHz and a heating temperature of 60-150 ° C and a vacuum value of 3 kPa. Then the chamber with wood serves the monomer, and after saturation with pores and capillaries wood increases the vacuum pressure to 400 kPa and fixes it for a period of time is from 20 to 120 minutes at a temperature of from 20 to 40 ° C, after which the monomer is drained. Start the polymerization process, which is heated monomer impregnated wood to 80-140 ° C with microwave and infrared radiation simultaneously, at a given temperature and pressure at the level of 200 to 600 kPa support for 2-5 hours.
提供机构:
国家林业和草原科学数据中心
创建时间:
2023-02-12



