人工林木材密实化处理技术与性能评价

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1、aftertreatmentwasanalyzedbyFTIR．ResultshowsthatPFresinnotonlyimpregnateintowoodcelllumenandintercellularspace，butalsoreactwiththesomegroupsincellulose，hemicellulosesandlignin．ItisindicatedthatthePFresinimpregnationtreatmentisacomplexphysicalandchemicalprocess．4．

2、Thecontactangleshowsthattreatedwoodhaslowerwettabilitythanuntreatedwood，whilesandingthewoodsurfacewettabilityincreases．Theorderofthethreechemicalreagentsonwoodsurfacewettabilityis：di—iodomethane(Good、>formamide(Medium)>distilledwater(Bad)．5．Thephysicalandmechani

3、calpropertiesoftreatedwoodshowthatallphysicalandmechanicalpropertiesexceptimpacttoughnesshaveincreasedtreatment．Thedensityofpoplarandbirchwoodincreasesby78．8％and24，2％．bendingstrengthincreasesby113％and61％，themodulusofelasticityincreasesby56．7％and30．3％，respectivel

4、y．Poplartimbergetsobviousimprovements．Mechanismofdimensionalstabilityliesin：resinfillinwoodlumenandbulk；resinreactwithsomegroupsinwoodandformnewchemicalbonds，theabsorbentgroup—Hydroxylsignificantlyreduce．6．ThemachiningperformanceoftreatedwoodshowsthatPFresinimpr

5、egnationtreatmenthassignificanteffectsonmachiningperformanceofpoplarwood．Treatedwoodhasbettermachiningperformancethanuntreatedwood．Tobirchwood，PFresinimpregnationtreatmenthasnoinfluenceonitsmachiningperformanceexceptforthecrosscutting．Generallyspeaking,treatedpo

6、plarwoodhasthebestmachiningperformance，whiletheuntreatedpoplarwoodhasworsemachiningperformance．7．ThreedifferenttypesofpaintsWereappliedtofinishbothtreatedanduntreatedwood．Thecoatingadhesion，coatingabrasionandcoatinghardnesswereexaminedfinishing．Theresultshowstha

7、tPFresinimpregnationtreatmenthasnonegativeeffectsonwoodpaintfinishingproperties．SomespecieseVenhasincreasedfinishingproperties．8．ThedevelopmentofnovelproductsbytreatedwoodshowsthatPFresinimpregnationtreatment，thetreatedwoodissuitabletofloormanufacturing．Treatedp

8、oplartimberalsofitsfordoorandwindowproduction．Theproductshavegoodquality,beautifulappearanceaswellasthelowcost．Itmusthaveapromisingmarket．Keywords：Phenolformaldehyder