A na-anakọta ozi niile dị n'ime ngalaba “Emissions” site na EWPAA: Nka na ụzụ, Formaldehyde Emissions sitere na Plywood na Laminated Veneer Lumber.
Nkebi a na-ezo aka na nnwale ụlọ ọrụ na-aga n'ihu n'ule formaldehyde sitere na ngwaahịa akara EWPAA, na-achịkọta nyocha nke EWPAA mezuru na anapụta sitere na ngwaahịa Ụdị A jikọtara ọnụ, ya na adhesives phenolic, na-anọchi anya ihe karịrị 90% nke mmepụta EWPAA nke nwere ihe ọkụkụ efu nke ọma.
Formaldehyde
Formaldehyde bụ gas na-esi ísì ụtọ na-enweghị agba, nke siri ike na-apụta n'ime gburugburu ebe obibi ma na-ebute ya site na usoro dịka ire ere, ire ọkụ na ụdị osisi niile.
Formaldehyde na-emepụta ihe
A na-emepụta plywood ka ọ bụrụ ụdị nrapado abụọ: Phenol Formaldehyde (PF) na amino plastic, nke gụnyere Melamine Urea Formaldehyde (MUF) na Urea Formaldehyde (UF).
Enwere nnukwu ọdịiche dị na kemistri n'etiti ụdị nrapado abụọ ahụ. Na ngwaahịa PF bonded, mgbe ọ bụla dị ala residual formaldehyde si n'ichepụta usoro agbasawo n'ime ụbọchị ole na ole, ha adịghị emipụta formaldehyde.
Adhesive PF, nke ejiri agba ojii mara ya, ka a na-akpọ Ụdị A n'okpuru ọkọlọtọ Australia na New Zealand dịka ejiri ya rụọ plywood nhazi, ngwaahịa mmiri plywood mpụga (ụdị A).
Na ma Europe na United States, ngwaahịa ndị ejikọtara na PF adhesives bụ nkewa dị ka ndị na-adịghị amịpụta ma bụrụ ndị a gụpụrụ na iwu ikuku formaldehyde.
Ngwaahịa Amino rọba jikọtara ọnụ na-enwekarị ọkwa formaldehyde n'efu ma nwee ike iwepụta ọkwa dị ala nke formaldehyde.
Nkà na ụzụ Nkwubi okwu
Mkpọpụta formaldehyde sitere na ngwaahịa ndị EWPAA agbaara agba dị n'okpuru oke mkpughe anabatara nke Workplace Australia kwuru na ọ bụghị ihe egwu ahụike.
Klas formaldehyde emission dị na Standards Australia/ New Zealand bụ nkọwa na tebụl dị n'okpuru. Ngwaahịa ejiri akara klaasị E0 na E1 nwere ikuku formaldehyde dị obere.
Oke ikuku nke klaasị formaldehyde (mg/l) oke ikuku nke formaldehyde (ppm)*
Super E0 Ihe na-erughị ma ọ bụ hà nhata 0.3 Na-erughị ma ọ bụ hà nhata 0.024
E0 Ihe na-erughị ma ọ bụ hà nhata 0.5 Ihe na-erughị 0.04
E1 Ihe na-erughị ma ọ bụ hà nhata 1.0 Obere ma ọ bụ hà nhata 0.08
Oge nzipu: Ọktoba 19-2021