木材加工机械
木材加工機械
목재가공궤계
WOOD PROCESSING MACHINERY
2012年
1期
11-13,10
,共4页
三聚氰胺-脲醛树脂%硼酸%硼砂%木材改性%热分解
三聚氰胺-脲醛樹脂%硼痠%硼砂%木材改性%熱分解
삼취청알-뇨철수지%붕산%붕사%목재개성%열분해
melamine-urea-formaldehyde resin(MDE)%boric acid%borax%wood modification%thermal decomposition
通过热重（TG）和差热分析（DTA）,考察经不同浓度的MUF及其与硼酸、硼砂复配的改性液处理后柳杉木材的热分解过程,结果表明：MUF对木材具有一定的催化成炭作用,复配硼酸、硼砂后其催化成炭作用得到进一步的加强;MUF促进了木材燃烧时的氧化分解,但复配硼酸、硼砂后,氧化分解反应得到明显抑制,放热量降低,剩炭率提高。
通過熱重（TG）和差熱分析（DTA）,攷察經不同濃度的MUF及其與硼痠、硼砂複配的改性液處理後柳杉木材的熱分解過程,結果錶明：MUF對木材具有一定的催化成炭作用,複配硼痠、硼砂後其催化成炭作用得到進一步的加彊;MUF促進瞭木材燃燒時的氧化分解,但複配硼痠、硼砂後,氧化分解反應得到明顯抑製,放熱量降低,剩炭率提高。
통과열중（TG）화차열분석（DTA）,고찰경불동농도적MUF급기여붕산、붕사복배적개성액처리후류삼목재적열분해과정,결과표명：MUF대목재구유일정적최화성탄작용,복배붕산、붕사후기최화성탄작용득도진일보적가강;MUF촉진료목재연소시적양화분해,단복배붕산、붕사후,양화분해반응득도명현억제,방열량강저,잉탄솔제고。
The thermal decomposition of Cryptomeria Fortunei wood treated by melamine-urea-formaldehyde （MUF） resin and the mixture of MUF/boric acid/borax （MBB） with different concentrations were studied by thermogravimetry （TG） and differential thermal analysis （DTA）. Results showed that MUF had certain catalytic effect on carbon forming, and the effect was further enhanced after adding boric acid and borax into MUF. The oxidative decomposition of wood in combustion was accelerated due to the treatment of MUF, but obviously restrained after the treatment of MBB. The heat release quantity of wood in combustion was reduced and the char yield ratio of wood after combustion was increased by the treatments of MUF and MBB.
