Effects of dyeing on fast-growing Chinese fir wood

Key words: 
• Chinese fir (Cunninghamia lanceolata) /
• wood modification /
• dyeing technology /
• permeability

Abstract: Under conventional conditions the dyeing technology of fast-growing Chinese fir was studied by a series of single-factor experiments and multi-factor orthogonal experiments .The dyestuff solution permeability is the most important indicator determined wood dyeing effects .The results showed that solution permeable direction , specimen moisture content and dyestuff solution consistence hadmore effect on wood dyeing , but steeping time and permeable agent amount had less effect .The optimal dyeing technology was as follows :dyestuff solution consistence of 20.0 gL-1 , specimen moisture content of 30 %, steeping time of 45 min and permeable agent amount of 1.0 ～ 2.0 gkg-1 .