CNS 6717-69(89) 木材防腐劑之性能基準及其試驗法 英文版

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1、CNS6717,O2027－2－3.QualitativestandardsTestsaccordingtoSect.4shallbeconducted.ThepropertiesofwoodpreservativesateachconcentrationinactualuseshallmeetthequalitativestandardsspecifiedinTable1.3.1Decayresistance:ThedecayresistanceofwoodpreservativesreferstotheaveragemasslossratespecifiedinSec

2、t.4.2causedbyeitherLaetiporussulphureusorLenzitesbetulina.3.2Corrosionofiron:ThecorrosionofironofwoodpreservativesreferstothecorrosionratioofironspecifiedinSect.4.3.3.3Hygroscopicity:ThehygroscopicityofwoodpreservativesreferstothehygroscopicratiospecifiedinSect.4.4.3.4Penetration:Thepenet

3、rationofwoodpreservativesreferstotheaverageretentionratiospecifiedinSect.4.5.3.5Emulsifiability:TheemulsifyingstabilityofemulsifiedwoodpreservativesreferstotheseparationrateandresiduerateofactiveingredientsasspecifiedinSect.4.6.Table1.QualitativestandardsofwoodpreservativesQualitativeProp

4、ertyItemstandards(1)DecayresistanceAveragemasslossratewt%<3(2)CorrosionofironCorrosionratioofiron<2.0HygroscopicityHygroscopicratio<1.2PenetrationAverageretentionratio>0.5InitialstabilitySeparationratevol%<1.0Long-termstoragestabilitySeparationratevol%<1.0EmulsifiabilitySeparationratevol%

5、<1.0EmulsifyingstabilityofsolutionforrepeatedusesResiduerateofactiveingredient%100±10(1)Note:ThesevaluesshallbetheaveragemasslossrateofcontrolspecimenstestedsimultaneouslywithtreatedspecimensforLaetiporussulphureusexceeding30%andLenzitesbetulinaexceeding15%.(2)Note:Thisvaluereferstotheave

6、ragemasslossrateofnailwithavaluebelow2.0forcontrolspecimenstestedsimultaneouslywithtreatedspecimens.A4(210×297)mm－3－CNS6717,O20274.Methodoftest4.1Generalconsiderations4.1.1Woodspecimen(1)NormalandsoundsapwoodofJapanesecedarandsweetgumshallbeusedaswoodspecimens.Woodspecimensusedinthesamete

7、stshallbecutfromthesamepieceofwoodintheair-driedstate.(2)Woodspecimen,withtwoedgegrainsurfaces,shallbesmoothedbysurfacing.AirdriedspecificgravityofJapanesecedar,with3–5ringsper10mm,shallbebetween0.25–0.33,between0.48–0.57forsweetgum,with2–4ringsper10mm.(3)Drywoodspe