Okwu mmeghe nke eriri eriri agbakwasara ahụ
bọọdụ eriri gbakwasara ala
Oriented strand board (OSB) bụ ụdị osisi arụrụ arụ nke yiri bọọdụ irighiri ihe, nke a kpụrụ site n'ịgbakwunye adhesives wee na-echikota akwa nke eriri osisi (flakes) na ntụzịaka a kapịrị ọnụ.Armin Elmendorf chepụtara ya na California na 1963.[1]OSB nwere ike inwe elu siri ike ma dị iche iche nke nwere ibe ya dị gburugburu 2.5 cm × 15 cm (1.0 na 5.9 sentimita), na-edina n'ụzọ ziri ezi n'ofe ibe ya, a na-emepụta ya n'ụdị na ọkpụrụkpụ dị iche iche.
Na-eji
OSB bụ ihe eji arụ ọrụ dị mma nke na-eme ka ọ dabara adaba maka ngwa na-ebu ibu na-ewu.[2]Ọ na-ewu ewu ugbu a karịa plywood, na-enye iwu 66% nke ahịa panel nke North America.[3]Ihe ndị a na-ejikarị eme ihe bụ ịkwa akwa na mgbidi, ala ala na n'elu ụlọ.Maka ngwa mgbidi dị n'èzí, panels dị na oyi akwa radiant-barrier laminated n'otu akụkụ;nke a na-eme ka ntinye dị mfe ma na-abawanye arụmọrụ ike nke envelopu ụlọ.A na-ejikwa OSB na-emepụta ngwá ụlọ.
Imepụta
A na-arụpụta bọọdụ eriri agbadoro anya n'ụkpụrụ sara mbara site na n'ígwé osisi dị gịrịgịrị, akụkụ akụkụ anọ gbakọtara ma jikọta ya na wax na nrapado resin sịntetik.
Ụdị resins na-ejikọta ya na-agụnye: urea-formaldehyde (ụdị OSB 1, nke na-adịghị edozi, nke na-adịghị mmiri);Glu nke dabeere na isocyanate (ma ọ bụ PMDI poly-methylene diphenyl diisocyanate dabeere) na mpaghara ime ya na melamine-urea-formaldehyde ma ọ bụ phenol formaldehyde resin glues na elu (OSB ụdị 2, nhazi, mmiri na-eguzogide ihu);phenol formaldehyde resin niile (ụdị OSB 3 na 4, nhazi, maka ojiji na mmiri mmiri na gburugburu).[4]
A na-emepụta akwa akwa ahụ site n'itinye osisi ahụ n'ime ibe, nke a na-agbapụta wee tụgharịa na eriri ma ọ bụ eriri waya.A na-eme ute ahụ n'ahịrị akpụ.Mpempe osisi dị n'ígwé ndị dị n'èzí na-adaba na axis ike panel, ebe n'ime ime n'ígwé bụ perpendicular.A na-ekpebi ọnụ ọgụgụ nke akwa akwa nke akụkụ site na ọkpụrụkpụ nke panel ahụ, ma ọ bụ ihe eji arụ ọrụ arụnyere na saịtị mmepụta ihe.N'ígwé nke ndị mmadụ n'otu n'otu nwekwara ike ịdịgasị iche na ọkpụrụkpụ iji nye ọkpụrụkpụ panel dị iche iche emechara (nke a, oyi akwa 15 cm (5.9 na) ga-emepụta ọkpụrụkpụ panel nke 15 mm (0.59 na)).A na-etinye ute ahụ na igwe na-ekpo ọkụ iji kpoo flakes ma jikọta ha site na ịgbalite ọkụ na ịgwọ resin nke ekpuchiri na flakes.A na-ebipụkwa paịlị nke ọ bụla site na ute ahụ ka ọ bụrụ nha emechara.A na-eme ọtụtụ OSB ụwa na United States na Canada na nnukwu ụlọ ọrụ mmepụta ihe.
Ngwaahịa ndị emetụtara
A na-eji ihe ndị ọzọ na-abụghị osisi mepụta ngwaahịa ndị yiri OSB.Mbadamba ahịhịa nke gbakwasara agbawa bụ bọọdụ arụrụ arụ nke a na-eme site na-ekewa ahihia wee kpụrụ ya site n'ịgbakwunye P-MDI adhesives wee na-ekpo ọkụ na-akpakọ ahịhịa ahịhịa n'ụzọ dị iche iche.[5]E nwekwara ike isi na bagasse mee osisi strand.
Mmepụta
Na 2005, mmepụta Canada bụ 10,500,000 m2 (113,000,000 sq ft) (3⁄8 na ma ọ bụ 9.53 mm ndabere) nke 8,780,000 m2 (94,500,000 sq ft) (3⁄8 na ma ọ bụ 9.53 mm na United States fọrọ nke nta ka ebupụ na United States). [6]Na 2014, Romania ghọrọ mba kacha ibu OSB na Europe, na 28% nke mbupụ na-aga Russia na 16% na Ukraine.
Njirimara
Ndozi na usoro nrụpụta nwere ike imetụta ọkpụrụkpụ, nha panel, ike, na isi ike.Ogwe OSB enweghị oghere ma ọ bụ oghere dị n'ime, ma nwee ike na-eguzogide mmiri, ọ bụ ezie na ha na-achọ mkpuchi ọzọ iji nweta mmiri na-adịghị agwụ agwụ na anaghị akwado ya maka iji mpụga.Ngwaahịa emechara nwere ihe ndị yiri plywood, mana ọ dị otu ma dị ọnụ ala.[8]Mgbe a nwalere ka ọ daa, OSB nwere ikike ibu ibu karịa osisi egwe ọka.[9]Ọ dochiela plywood n'ọtụtụ gburugburu, ọkachasị ahịa panel nke North America.
Ọ bụ ezie na OSB enweghị ọka na-aga n'ihu dị ka osisi sitere n'okike, ọ nwere axis nke ike ya kacha ukwuu.Enwere ike ịhụ nke a site n'ịhụ nhazi nke ibe osisi n'elu.
Enwere ike igbutu ogwe ihe eji arụ ọrụ niile sitere na osisi ma tinye ya na ụdị akụrụngwa dị ka osisi siri ike.
Ahụike na nchekwa
Resin ndị a na-eji mepụta OSB ewelitela ajụjụ gbasara ike OSB nwere ibupụta ogige organic na-agbanwe agbanwe dịka formaldehyde.Urea-formaldehyde na-egbu egbu karịa ma ekwesịrị izere ya na iji ụlọ.A na-ahụta ngwaahịa phenol-formaldehyde ka enweghị ihe egwu.Ụfọdụ ụdị OSB ọhụrụ, nke a na-akpọ "ọgbọ ọhụrụ" OSB panels, na-eji resin isocyanate na-enweghị formaldehyde ma na-ewere ya dị ka ndị na-adịghị agbanwe agbanwe ma a gwọọ ya.[10]Otu ndị na-azụ ahịa ụlọ ọrụ na-ekwusi ike na ikuku formaldehyde sitere na North America OSB bụ "ihe efu ma ọ bụ adịghị adị".[11]
Ụfọdụ ndị na-emepụta ihe na-eji ogige borate dị iche iche na-egbu osisi ndị ahụ na-egbu egbu, ebe osisi na-agwụ ike, ebu, na fungi, ma ọ bụghị ụmụ anụmanụ na-etinye aka na ya.
Ụdị
A kọwapụtara akara ule ise nke OSB na EN 300 n'ihe gbasara arụmọrụ ha na nguzogide iru mmiri:[2]
OSB/0 - Enweghị formaldehyde agbakwunyere
OSB / 1 - bọọdụ ebumnuche zuru oke na mbadamba maka ime ime ụlọ (gụnyere arịa ụlọ) maka ojiji na ọnọdụ akọrọ.
OSB / 2 - mbadamba ihe na-ebu ibu maka iji na ọnọdụ akọrọ
OSB / 3 - bọọdụ na-ebu ibu maka ojiji na ọnọdụ iru mmiri
OSB / 4 - bọọdụ na-ebu ibu dị arọ maka iji na ọnọdụ iru mmiri
Oge nzipu: Mee-24-2022