Method for carrying out reinforcing and sealing-protection on wood by using nano cellulose
A nanocellulose and wood technology, applied in wood processing appliances, wood treatment, impregnating wood, etc., can solve the problems of low microstructure strength, cumbersome preparation process, poor environmental performance, etc., to improve wood quality and added value, chemical Good stability and thermal stability
Active Publication Date: 2019-08-30
INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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The invention belongs to a method for carrying out reinforcing and sealing-protection on wood by using nano cellulose. The method comprises the following steps: classifying the wood according to waterpermeability of the wood, and performing brushing or immersion treatment on the wood according to classification with a nano-cellulose sealing-protection liquid prepared by a carboxymethyl celluloseor hydroxypropyl cellulose or hydroxyethyl cellulose polymer solution with a concentration of 0.5-2.5%, a cellulose nano crystal with a concentration of 0.5-1.5%, a nano cellulose dispersion liquid ofTEMPO oxidized nano fibers with a concentration of 0.2-0.7%, and a modification liquid of a silica sol with a concentration of 0.5-1.5%. The method can improve dimensional stability, density, flexural modulus and compressive strength of the wood, and has the advantages of significantly improving quality and added values of the wood.
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Property | Measurement | Unit |
Absolute dry density | 0.62 | g/cm³ |
Along the grain compressive strength | 71.3 | mPa |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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