| PARTICLEBOARD STRESS RELAXATION THROUGHOUT MECHANO-SORPTIVE CREEP OF GLUELINES |
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| 作者姓名： | 王逢瑚 戴芳天 |
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| 作者单位： | Northeast Forestry University，Harbin 150040，China |
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| 摘 要： | Anumberofinveshgationsonmethodslbrcontrollingpaticleboardstabilityhavebeenmade,andmostofthemconcentrateonstabilisingthewood.substance.MakuandSasaki(l956)foundthatswellingandtvaterabsorptionofboardsmadefromheattreatedflakesdecreasedwiththeseverityoftreatment.ThisagreeswiththeworkofLehmann(l964)whofotmdthestabilityofparticleboardtoim-provewhenmadewithparticlestreatedat2o5C"forl5,3o,45niinutes.ThemechanicaIpropertieswere,however,adverscl}'affcctedbecauscofen1brittlementofthextood.Tl1iseffecthas…
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Particleboard stress relaxation throughout mechano-sorptive creep of gluelines |
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| Wang Fenghu,Dai Fangtian.PARTICLEBOARD STRESS RELAXATION THROUGHOUT MECHANO-SORPTIVE CREEP OF GLUELINES[J].Journal of Forestry Research,1996,7(1):73-76. |
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| Authors: | Wang Fenghu Dai Fangtian |
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| Institution: | (1) Northeast Forestry University, 150040 Harbin, China |
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| Abstract: | A review on methods for controlling the dimensional stability of particleboards. a second pressing at the same temperature as the first pressing may possibly have three main effects on PF resin bonded particleboard durability: (a) the effect of mechano-sorptive behaviour; (b) the effect of softening of cell wall polymers, (c) the improvement of cure of PF resins. Effects (a) and (b) may accelerate the removal of the recoverable part of residual compressive strain replace of it with the development of the viscous component, thus, relax the compressive stresses. |
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| Keywords: | Particleboard Dimensional stability Mechano-sorptive creep |
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