Ukuthelekisa iFoam yeSpray yeSeli evulekileyo kunye neSeli evaliweyo: Umahluko oPhambili kunye nezicelo

I-sprayed polyurethane foam (SPF) sisixhobo sokukhusela esisebenziseka lula esisekelwe kulwakhiwo lweekhemikhali, kwaye ngenxa yokuba izinto ezifuthwe nge-foam aziguquguquki ngokuhamba kwexesha, zihlala zisetyenziswa kwinkqubo yokukhusela izindlu. Iqulathe izinto ezimbini eziphambili: ii-isocyanates kunye nomxube wezongezo, kuquka ii-polyols kunyeiikhatalyst, ezixutywa kwindawo ukuze zenze umaleko oqinileyo wokukhusela. Kukho iintlobo ezimbini eziphambili zefoam yokutshiza: ifoam evulekileyo kunye nefoam evaliweyo, nganye ineempawu ezahlukeneyo kunye nokusetyenziswa kwayo.

Igwebu leSpray eliVulekileyo

Ifoam yokutshiza enemingxuma evulekileyo inexabiso eliphantsi kwaye inokwandiswa kakhulu, kwaye ingakhethwa xa kuzaliswa izithuba ezinkulu. Ngenxa yokuba inkuluukuguquguquka, ingasuswa ngokulula kwaye ingazaliswa nge-insulation kwiikona ezinzima ukufikelela kuzo. I-foam yeseli evulekileyo inesakhiwo seseli esifana namaqamza amancinci aneembobo ezivumela umoya ukuba ujikeleze. Nangona inika umoya oqinileyo, ayiboneleli ngomqobo wokufuma kuba ukungena kwayo kuvumela amanzi ukuba adlule. Inexabiso le-R (umlinganiselo wesakhono sayo sokukhusela) elimalunga ne-3.5 ukuya kwi-3.8 nge-intshi, okwenza ukuba ifaneleke ukusetyenziswa apho ukuhamba komoya kufuneka khona kodwa ukumelana nokufuma akuyomfuneko. Isetyenziswa rhoqo kwiindonga zangaphakathi, kwii-attic, nakwiindawo ezifuna ukhuseleko lwesandi, njengoko ulwakhiwo lwayo lwemingxuma evulekileyo lukwabonelela ngokunciphisa ingxolo okugqwesileyo.

Igwebu leSpray eliValiweyo

Iimbobo ezihlanganiswe ndawonye ukuze zenze isakhiwo esixineneyo zibizwa ngokuba ziifoams zeseli ezivaliweyo. Ifoam yokutshiza iiseli ezivaliweyo ixinene kwaye iqinile, idala umqobo onamandla nxamnye nomoya nokufuma. Iimbobo zayo ezixineneyo zithintela umoya nokufuma ekungeneni, nto leyo eyenza ukuba ibe ngumqobo wokufuma osebenzayo. Iyakhula ngesantya esiphantsi kunefoams zeseli ezivulekileyo, kodwa ikhusela ngcono, ngexabiso le-R elimalunga ne-6.0 nge-intshi. Okukhona ixabiso le-R liphezulu, ifoams zeseli ezivaliweyo zichasa ukuhamba kobushushu, nto leyo eyenza ukuba ifaneleke kakhulu kwiindlela zangaphandle ezifuna amaxabiso aphezulu okufudumeza kunye nokukhuselwa kokufuma, njengophahla, iziseko, kunye neendonga. Nangona ixabiso liphezulu, ifoams zeseli ezivaliweyo zihlala zikhethwa kwiindawo apho indawo incinci kodwa kufuneka ukufudumeza okuphezulu.

Ngamafutshane, zombini iifoam zokutshiza ezineeseli ezivulekileyo kunye neeseli ezivaliweyo zisebenza ngokuthintela ubushushu kodwa zahlukile kwiimpawu zazo kunye nokusetyenziswa kwazo. Ifoam eneeseli ezivulekileyo ifikeleleka lula, yandisa ngakumbi, kwaye ivumela ukujikeleza komoya, ngelixa ifoam eneeseli ezivaliweyo ixinene, isebenza njengomqobo womswakama, kwaye inikezela ngexabiso eliphezulu le-R. Ukukhetha phakathi kwezi zimbini kuxhomekeke kwiimfuno ezithile zeprojekthi, kubandakanya ukhuseleko lomswakama, ukusebenza kakuhle kobushushu, kunye nohlahlo lwabiwo-mali.