Optimal technichal method for recycling wood resources

来自木材工业的木材废料，甚至是来自被拆除房屋的木材废料，最初被用作木屑和燃料，作为回收的原材料，但它最近往往被倾倒或作为垃圾燃烧。该项目旨在有效地再利用拆除房屋的木材和使用过的木制品。根据本研究的结果，可以得出以下结论：(1)拆房木材中的木屑被用作刨花板。刨花板的质量与原始木屑的质量相当。(2)采用燃烧法和热降解法研究木材防腐剂的回收。这种方法可以用于跟踪测试。(3)研究了废旧木材快速碳化的方法。各种用过的木材，如用过的木柱、胶合木、木屑、锯末、朽木等都经过炭化处理，然后随着炭化温度的升高，其吸收能力和润湿性趋于提高。(4)森林中的木材残渣被炭化，木炭进入森林。(5)液化木材制备的聚氨酯泡沫易于加速生物降解和光降解。这种复合材料被认为对环境的影响较小。

Wood waste from wood industry, even that from demolished house, has been originally used for chip and fuel as a recycled raw material, but it recentry tends to be dumped or burned as rubbish. This project aims to re-use the timber from demolished houses and used wood products effectively. Based from the results of this study, the following conclusions could be drawn :(1) Wood chip from the timber of demolished house was used for particleboard. The quality of the particleboard was equal to that from virgin wood chip.(2) Recovery of wood preservatives was investigated by burning and heat degradation. This method could be useful as a tracing testing.(3) A rapid carbonizing method for used timber was investigated. A variety of used timbers, such as used colomn, glulam, chip, saw dust and decay wood, were carbonized, and then their ability of absorption and wettability tend to be increased in increasing carbonizing temperature.(4) Wood residu in forest was carbonized and the charcoals were spread into forest.(5) The bio-degradation and photo-degradation of poliyurethane foam from liquefied wood is easily accelerated. This composite is recognized to be less environmental impact.