Microwave radiation can soften the wood and bend it into different radius of curvature in a very short time. The bending properties of poplar, maple tree, Taxodium ascendens and Paulownia wood were studied by microwave heating. The results showed that the elastic modulus of poplar and maple tree decreased after microwave treatment, which was helpful for wood bending. Li Jun studied the relationship between bending parameters and product quality of Fraxinus mandshurica specimen heated by microwave. The optimum bending parameters were 60% moisture content of wood, 400 W microwave power and 2-5 min heating time.
After microwave drying, the inside and outside color of wood is more uniform and wood utilization value is higher. The dyeing method of wood pretreated by microwave was studied, which has the advantages of small equipment investment, simple process and good treatment effect.
The flame retardant agent is injected into wood by microwave treatment, so the flame retardant agent is not easy to lose and the flame retardant effect is more obvious. The application of microwave treatment technology in fire retardant treatment of Pinus sylvestris var. mongolica and Fraxinus mandshurica wood was studied. The results showed that the flame retardant effect of microwave treatment was better than that of conventional treatment.
The flame retardant agent is injected into wood by microwave treatment, so the flame retardant agent is not easy to lose and the flame retardant effect is more obvious. The application of microwave treatment technology in fire retardant treatment of Pinus sylvestris var. mongolica and Fraxinus mandshurica wood was studied. The results showed that the flame retardant effect of microwave treatment was better than that of conventional treatment.
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