Iko kuiswa kweiyo oriented strand board

Iko kuiswa kweiyo oriented strand board

Oriented strand board

Oriented strand board (OSB) imhando yehuni dzakagadzirwa dzakafanana ne particle board, inoumbwa nekuwedzera zvinonamira uyezve kudzvanya zvidimbu zvehuni tambo (flakes) mune dzakananga.Yakatangwa naArmin Elmendorf muCalifornia muna 1963. [1]OSB inogona kunge iine nzvimbo yakakasharara uye ine mitsetse yega yega inotenderedza 2.5 cm × 15 cm (1.0 ne5.9 inches), yakarara zvisina kuenzana pakatarisana, uye inogadzirwa mumhando dzakasiyana uye ukobvu.

Uses
OSB chinhu chine zvinhu zvakanaka zvemuchina chinoita kuti chinyanyokodzera kutakurisa-kutakura zvikumbiro mukuvaka.[2]Yave kufarirwa kupfuura plywood, ichiraira 66% yeNorth America structural panel musika.[3]Izvo zvinonyanya kushandiswa ndezvekusheedzera mumadziro, pasi, uye decking yedenga.Kwekunze kwemadziro emadziro, mapaneru anowanikwa ane radiant-barrier layer laminated kune rimwe divi;izvi zvinorerutsa kuisirwa uye kuwedzera simba rekuita kwehamvuropu yekuvaka.OSB inoshandiswawo mukugadzira fenicha.

Kugadzira
Oriented strand board inogadzirwa mumameti akafara kubva kune akachinjika akaturikidzana ematanda matete, rectangular akamisikidzwa uye anobatanidzwa pamwe chete newakisi uye ekugadzira resin adhesives.

Mhando dzekunamatira dzinoshandiswa dzinosanganisira: urea-formaldehyde (OSB type 1, nonstructural, nonwaterproof);isocyanate-based glue (kana PMDI poly-methylene diphenyl diisocyanate based) munzvimbo dzomukati dzine melamine-urea-formaldehyde kana phenol formaldehyde resin glues pamusoro (OSB type 2, structural, mvura inopesana nechiso);phenol formaldehyde resin mukati mese (OSB marudzi 3 ne4, maumbirwo, kuti ashandiswe munzvimbo dzakanyorova uye kunze).[4]

Iyo mitsara inogadzirwa nekutsemura huni kuita zvidimbu, izvo zvinopepetwa uye zvino zvinonangidzirwa pabhandi kana waya cauls.Meti inogadzirwa mumutsara wekugadzira.Mitsetse yehuni pamatanho ekunze anoenderana neaxis yesimba repaneru, nepo mukati memukati ari perpendicular.Nhamba yezvikamu zvakaiswa zvinotarirwa chikamu nehupamhi hwepaneti, asi inogumira nemidziyo yakaiswa panzvimbo yekugadzira.Matunhu ega ega anogonawo kusiyana muukobvu kupa akasiyana akapedzwa makobvu epaneru (kazhinji, 15 cm (5.9 mu) layer inoburitsa 15 mm (0.59 mu) ukobvu hwepaneru[inodiwa]).Iyo meti inoiswa muchitsikidzo chekupisa kudzvanya maflakes uye nekuasunga nekuita kupisa uye kurapa resin yakaputirwa pamaflakes.Mapanera ega ega anobva achekwa kubva kumameti kuita saizi dzakapedzwa.Yakawanda yeOSB yenyika inogadzirwa muUnited States neCanada munzvimbo huru dzekugadzira.

Zvigadzirwa zvinoenderana
Zvishandiso kunze kwehuni zvakashandiswa kugadzira zvigadzirwa zvakafanana neOSB.Oriented structural straw board ibhodhi rakagadzirwa nekupatsanura mashanga uye rinoumbwa nekuwedzera P-MDI zvinonamirwa uyezve inopisa kudzvanyirira zvidimbu zvemashanga mune chaiwo maitiro.[5]Strand board inogonawo kugadzirwa kubva mubagasse.

Kugadzirwa
Muna 2005, kugadzirwa kweCanada kwaive 10,500,000 m2 (113,000,000 sq ft) (3⁄8 mukati kana 9.53 mm hwaro) iyo 8,780,000 m2 (94,500,000 sq ft) (3⁄3, 3 mamirimita, 9.8 muUnited States yese) .[6]Muna 2014, Romania yakava nyika hombe yekutengesa OSB muEurope, iine 28% yezvinotengeswa kunze kwenyika zvichienda kuRussia uye 16% kuUkraine.

Properties
Kugadziriswa kwemaitiro ekugadzira kunogona kukanganisa ukobvu, saizi yepaneru, simba, uye kusimba.OSB mapaneru haana maburi emukati kana ma voids, uye anogona kusamira mvura, kunyangwe achida mamwe ma membranes kuti awane kusapinda mumvura uye haakurudzirwe kushandiswa kwekunze.Chigadzirwa chakapedzwa chine zvinhu zvakafanana neplywood, asi rakafanana uye rakachipa. [8]Kana yaedzwa kuti yakundikana, OSB ine simba rekutakura zvinhu zvikuru kupfuura mapaneru akagayiwa. [9]Yakatsiva plywood munzvimbo dzakawanda, kunyanya musika wekuNorth America.

Nepo OSB isina tsanga inoenderera sehuni yemusikirwo, ine axis iyo simba rayo rakakura.Izvi zvinogona kuonekwa nekucherechedza kurongeka kwepamusoro pehuni chips.

Zvose mapuranga-based structural use panels anogona kutemwa uye kuiswa nemhando dzakafanana dzemichina sehuni yakasimba.

Utano nekuchengeteka
Marezini akashandiswa kugadzira OSB akamutsa mibvunzo maererano nekugona kweOSB kuburitsa zvinhu zvisingaite senge formaldehyde.Urea-formaldehyde ine muchetura uye inofanira kudzivirirwa mukushandiswa kwepamba.Phenol-formaldehyde zvigadzirwa zvinoonekwa sezvisina njodzi-isina.Mamwe marudzi matsva eOSB, anodaidzwa kunzi "new-generation" OSB mapaneru, anoshandisa masocyanate resin asina formaldehyde uye anoonekwa seasingabatike kana arapwa.[10]Mapoka ekutengeserana emaindasitiri anoti kuburitswa kwe formaldehyde kubva kuNorth America OSB "hakuna basa kana kuti hakuna".[11]

Vamwe vanogadzira vanobata huni dzehuni nemhando dzakasiyana-siyana dzeborate dzine chepfu kumajuru, zvipembenene zvinoboora huni, molds, uye fungi, asi kwete mhuka dzinoyamwisa mumishonga inoshandiswa.

Types
Magiredhi mashanu eOSB anotsanangurwa muEN 300 maererano nekuita kwavo kwemuchina uye kuramba kunyorova:[2]

OSB/0 - Hapana yakawedzera formaldehyde
OSB/1 - General-chinangwa mabhodhi uye mabhodhi ezvemukati akaiswa (kusanganisira fenicha) kuti ashandiswe mumamiriro akaoma
OSB/2 - Mabhodhi anotakura anotakura kuti ashandiswe mumamiriro akaoma
OSB/3 - Mabhodhi anotakura anotakura kuti ashandiswe mumamiriro ekunyorova
OSB/4 - Inorema-basa rinotakura mutoro-mabhodhi ekushandiswa mumamiriro emvura