Tag nrho cov ntaub ntawv nyob rau hauv cov nram qab no "Emissions" seem yog sau los ntawm EWPAA: Technical Note, Formaldehyde Emissions los ntawm Plywood thiab Laminated Veneer Lumber.
Tshooj lus no hais txog kev lag luam thoob plaws kev sim ntawm formaldehyde emissions los ntawm EWPAA cov khoom lag luam, cov ntsiab lus kev tshawb fawb ua tiav los ntawm EWPAA uas emissions los ntawm Hom A Bonded khoom, nrog phenolic adhesives, sawv cev ntau dua 90% ntawm EWPAA ntau lawm uas muaj txiaj ntsig xoom emissions.
Formaldehyde
Formaldehyde yog xim tsis muaj xim, muaj ntxhiab tsw ntxhiab uas tshwm sim nyob rau hauv ib puag ncig thiab tawm los ntawm cov txheej txheem xws li kev lwj, combustion thiab ib txwm muaj los ntawm txhua hom ntoo.
Formaldehyde Emissions
Plywood yog tsim rau ob hom nplaum yooj yim: Phenol Formaldehyde (PF) thiab amino yas, uas suav nrog Melamine Urea Formaldehyde (MUF) thiab Urea Formaldehyde (UF).
Muaj ntau qhov sib txawv hauv chemistry ntawm ob hom adhesives. Nrog PF cov khoom sib txuas, tom qab ib qho qis qis ntawm formaldehyde los ntawm cov txheej txheem tsim tau dissipated nyob rau hauv ob peb hnub, lawv tsis emit formaldehyde.
PF nplaum, raug txheeb xyuas los ntawm nws cov xim dub, yog hu ua Hom A raws li Australian thiab New Zealand ply cov qauv raws li siv hauv kev tsim cov plywood, marine plywood sab nrauv (Type A).
Hauv Tebchaws Europe thiab Tebchaws Meskas, cov khoom lag luam uas muaj kev sib raug zoo nrog PF adhesives raug cais raws li tsis-emitting thiab raug zam los ntawm formaldehyde emission cov cai.
Amino yas bonded khoom zoo li yuav muaj ntau dua residual dawb formaldehyde qib thiab muaj peev xwm emit tsawg formaldehyde.
Technical Note Conclusion
Formaldehyde emissions los ntawm EWPAA cov khoom muaj ntawv pov thawj zoo hauv qab cov kev txwv raug pom zoo tau teev tseg los ntawm Workplace Australia thiab tsis ua rau muaj kev pheej hmoo rau kev noj qab haus huv.
Cov chav kawm formaldehyde emission nyob rau hauv Australian / New Zealand Standards yog cov ntsiab lus nyob rau hauv cov lus hauv qab no. Cov khoom lag luam sau npe nrog cov chav kawm emission E0 thiab E1 muaj formaldehyde emissions tsawg heev.
Emission Class Formaldehyde Emission Limit (mg/l) Formaldehyde Emission Limit (ppm) *
Super E0 Tsawg dua lossis sib npaug rau 0.3 Tsawg dua lossis sib npaug rau 0.024
E0 Tsawg dua lossis sib npaug 0.5 Tsawg dua lossis sib npaug rau 0.04
E1 Tsawg dua lossis sib npaug rau 1.0 Tsawg dua lossis sib npaug rau 0.08
Post lub sij hawm: Oct-19-2021