The wood-basedpanelslargelyrepresentedbyparticleboard,
medium density fiberboards(MDF),plywoodandorientedstrand
boards(OSB).Thesepanelsarethemajorconstituentforthe
productionofwoodfurnitureandotherinteriorhouseconstructions (i.e. flooring, wallpanelingetc.).Theglobalwood-based
panel marketvaluedoverUS$80billionin2011 [1]. Wood-based
panel aretypicallymadewithaheat-curingadhesivethatholds
the wood fibers orwood-particlescomponentstogether.
UF resinisoneofthelargelyusedadhesiveforinterior-grade
wood-basedpanelsspeciallyinparticleboard(PB),amedium
density fiberboard (MDF)manufacturing.Ithassomeadvantages
like fastcuring,lessinpriceandgoodmechanicalstrengthofthe
panels buthasmanydrawbackslikelowerwaterresistance,higher
emission offormaldehyde.TheweaknessofUFresinstohydrolysis
and thepresenceoffreenon-reactingformaldehydeinthepanels
togetherresponsiblefortheproblemofformaldehydeemission
from thepanelsduringmanufacturingandservicelife.
Themolarratioofformaldehydetourea(F/U)isthemost
essentialfactorforaffectingtheformaldehydeemissionliberation
fromthepanels.Theformaldehydeemissioncanbeloweredby
usingthecombinationofUFresinandformaldehydefreeadhesives
[2–4]. Severalmethodsformanufacturingthelowformaldehyde
emissionpanelshavebeenstudied,suchasreducingformaldehyde
ไม้ basedpanelslargelyrepresentedbyparticleboard
, fiberboards ความหนาแน่นปานกลาง ( MDF ) , บอร์ด plywoodandorientedstrand
( OSB ) thesepanelsarethemajorconstituentforthe
productionofwoodfurnitureandotherinteriorhouseconstructions ( เช่นพื้น wallpanelingetc . ) theglobalwood
แผง marketvaluedoverus $ 80billionin2011 [ 1 ] ตาม ไม้ตามแผง aretypicallymadewithaheat curingadhesivethatholds
ไม้ไฟเบอร์ orwood particlescomponentstogether .
MF
resinisoneofthelargelyusedadhesiveforinterior เกรดไม้ basedpanelsspeciallyinparticleboard ( PB ) , แผ่นใยไม้อัดความหนาแน่นปานกลาง
( MDF ) การผลิต ithassomeadvantages
ชอบ fastcuring lessinpriceandgoodmechanicalstrengthofthe , แผง buthasmanydrawbackslikelowerwaterresistance offormaldehyde ที่สูง , การ theweaknessofufresinstohydrolysis
และ thepresenceoffreenon reactingformaldehydeinthepanels
จาก togetherresponsiblefortheproblemofformaldehydeemission thepanelsduringmanufacturingandservicelife .
themolarratioofformaldehydetourea ( F / U )
isthemost essentialfactorforaffectingtheformaldehydeemissionliberation fromthepanels . theformaldehydeemissioncanbeloweredby
[ usingthecombinationofufresinandformaldehydefreeadhesives 2 – 4 )severalmethodsformanufacturingthelowformaldehyde
emissionpanelshavebeenstudied suchasreducingformaldehyde ,
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