In the present study,described that preparation of oligoesterified wood fibre by theaddition reaction of the wood fibre with maleic anhydride(MA)and allyl glycidyl ether(AGE).Further,made of crosslinkable oligoesterif...In the present study,described that preparation of oligoesterified wood fibre by theaddition reaction of the wood fibre with maleic anhydride(MA)and allyl glycidyl ether(AGE).Further,made of crosslinkable oligoesterified fiber board at high temperature and underhigh pressues,accompanying plasticization of the wood fibre components.The product exhibitedthe high the modulus of repture in bending(MOR),good water repellency and dimesionalstability.展开更多
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...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.展开更多
文摘In the present study,described that preparation of oligoesterified wood fibre by theaddition reaction of the wood fibre with maleic anhydride(MA)and allyl glycidyl ether(AGE).Further,made of crosslinkable oligoesterified fiber board at high temperature and underhigh pressues,accompanying plasticization of the wood fibre components.The product exhibitedthe high the modulus of repture in bending(MOR),good water repellency and dimesionalstability.
文摘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.
