DETERMINE ON INITIAL DIMENSIONAL STABILITY OF CHEMICAL MODIFIED WOOD

Strain development along radial direction was continuously determined by D—200Linear Variable Differential Transformers(L.V.D.T).When a wood specimen was put into waterand begin to swell from absolute dry moisture content to the maximum.Experiment results showthat the differences of swelling with soaking time between untreated and treated wood specimens dueto uptaking water.It would also give an indication to the effectiveness of various chemicals on thedimensional stability of modified wood.ASE of modified wood samples with SA-EP,EP and SA were found to be better than MA-AGE.SA-EP had got the best effetiveness on dimensional stabili-ty in reducing the swelling.

Determine on initial dimensional stability of chemical modified wood

Strain development along radial direction was continuously determined by D-200 Linear Variable Differential Transformers (L.V.D.T). When a wood specimen was put into water and begin to swell from absolute dry moisture content to the maximum. Experiment results show that the differences of swelling with soaking time between untreated and treated wood specimens due to uptaking water. It would also give an indication to the effectiveness of various chemicals on the dimensional stability of modified wood. ASE of modified wood samples with SA-EP, EP and SA were found to be better than MA-AGE. SA-EP had got the best effetivencss on dimensional stability in reducing the swelling.