Kunezici eziningi ezithinta ikhwalithi ye-polyurethane spray foam.Okulandelayo, sizogxila ezintweni eziyisikhombisa eziyinhloko ezithinta izinga layo.Uma uqonda izici ezilandelayo eziyinhloko, uzokwazi ukulawula ikhwalithi ye-polyurethane spray foam kahle kakhulu.

1. Ithonya lesendlalelo esingaphezulu kanye nongqimba olungaphezulu lwesisekelo sodonga.

Uma kunothuli, uwoyela, umswakama kanye nokungalingani ebusweni bodonga lwangaphandle, kuzothinta kakhulu ukunamathela, ukufakwa kwe-insulation kanye ne-flatness ye-polyurethane foam kungqimba lokufakelwa.Ngakho-ke, kuyadingeka ukuqinisekisa ukuthi udonga olungaphezulu luhlanzekile futhi luyisicaba ngaphambi kokufafaza.

2. Umthelela womswakamo kugwebu lwe-aerosol.

Njengoba i-ejenti enegwebu ijwayele ukusabela kwamakhemikhali ngamanzi, okuqukethwe komkhiqizo kuyakhula, okuvame ukukhulisa ukuqina kwegwebu le-polyurethane futhi kuzothinta kakhulu ukunamathela kwegwebu le-polyurethane eliqinile ebusweni bodonga.Ngakho-ke, izindonga zangaphandle zezakhiwo zifafazwa nge-polyurethane foam eqinile ngaphambi kokwakhiwa, futhi kungcono ukuxubha ungqimba lwe-polyurethane primer efaka umswakama (uma izindonga zomile ngokuphelele ehlobo, isinyathelo singasindiswa).

3. Ithonya lomoya.

I-polyurethane foaming yenziwa ngaphandle.Uma isivinini somoya sidlula u-5m/s, ukulahlekelwa ukushisa enqubweni yokukhihliza amagwebu kukhulu kakhulu, ukulahlekelwa kwempahla eluhlaza kukhulu kakhulu, izindleko ziyakhuphuka, futhi amaconsi ane-athomu kulula ukundiza nomoya.Ukungcoliswa kwemvelo kungaxazululwa ngamakhethini angenawo umoya.

4. Ithonya lokushisa elizungezile nokushisa odongeni.

Izinga lokushisa elifanele lokufafaza i-polyurethane foam kufanele libe ngu-10 ° C-35 ° C, ikakhulukazi izinga lokushisa lodonga olunomthelela omkhulu ekwakhiweni.Lapho izinga lokushisa lingaphansi kuka-10, igwebu kulula ukususa odongeni kanye ne-bulge, futhi ukuminyana kwegwebu kukhula kakhulu futhi kuchitha izinto zokusetshenziswa;lapho izinga lokushisa lingaphezu kuka-35 ° C, ukulahlekelwa kwe-ejenti enegwebu kukhulu kakhulu, okuzophinde kuthinte umphumela we-foam.

5.Ukufutha ukujiya.

Lapho ufutha igwebu eliqinile le-polyurethane, ubukhulu bokufafaza bunomthelela omkhulu kwikhwalithi nezindleko.Lapho i-polyurethane ifafaza ukwakhiwa kokufakwa kodonga lwangaphandle, ukushuba kongqimba lokufakwayo akukukhulu, ngokuvamile ku-2.03.5 cm, ngenxa yokwahlukanisa okuhle kwegwebu le-polyurethane.Kulokhu, ubukhulu be-spray akufanele budlule i-1.0 cm.Qinisekisa ukuthi ingaphezulu le-insulation efuthwe liyisicaba.I-slope ingalawulwa ebangeni le-1.0-1.5 cm.Uma ubukhulu be-aerosol bukhulu kakhulu, kuzoba nzima ukulawula izinga.Uma ubukhulu be-aerosol buncane kakhulu, ukuminyana kwesendlalelo se-insulation kuzokwanda, kumoshwe izinto ezingavuthiwe kanye nezindleko ezikhulayo.

6. Futha ibanga kanye nezici ze-engeli.

Ipulatifomu yomsebenzi wokufafaza igwebu eliqinile i-scaffolding noma obhasikidi abalengayo, ukuthola ikhwalithi enhle yegwebu, isibhamu sokugcina i-engeli ethile kanye nebanga lokufafaza nakho kubalulekile.I-engeli elungile yesibhamu sokufutha ngokuvamile ilawulwa ku-70-90, futhi ibanga phakathi kwesibhamu sokufuthwa nento efuthwayo kufanele igcinwe phakathi kuka-0.8-1.5m.Ngakho-ke, ukwakhiwa kokufafaza kwe-polyurethane kumele kube nabasebenzi bokwakha abanolwazi ukuze benze ukwakhiwa, ngaphandle kwalokho kuzothinta ikhwalithi futhi kwandise izindleko.

I-7.Isici sokwelashwa kwe-Interface yongqimba oluqinile lwe-polyurethane foam insulation.

Ngemva kokufafaza igwebu le-polyurethane eliqinile libe ukushuba okudingekayo, ukwelashwa kwesixhumi esibonakalayo kungenziwa ngemva kwamahora angu-0.5, okungukuthi xubha i-agent ye-polyurethane interface.I-ejenti yesixhumi esibonakalayo akumele isetshenziswe isikhathi esingaphezu kwamahora angu-4 (ingalondolozwa lapho kungenakukhanya kwelanga).Lokhu kungenxa yokuthi ngemva kwehora elingu-0.5 lokukhihliza amagwebu, amandla egwebu eliqinile le-polyurethane ngokuyisisekelo afinyelela ngaphezu kuka-80% wamandla alo aphezulu futhi izinga lokushintsha usayizi lingaphansi kuka-5%.Igwebu le-polyurethane eliqinile selivele lisesimweni esizinzile.futhi kufanele ivikelwe ngokushesha ngangokunokwenzeka.Ukunamathisela kwesendlalelo sokulinganisa kungenziwa ngemuva kokuthi i-agent ye-polyurethane interface isetshenziswe amahora angu-24 futhi ekugcineni imisiwe.

Kubalulekile ukunaka izici ezithinta ikhwalithi ye-polyurethane spray foam ngesikhathi sokwakhiwa nokuzama ukugwema ukulahlekelwa okungadingekile.Amakhasimende ayelulekwa ukuthi akhethe ithimba lezokwakha elichwepheshile ukuze liqinisekise kokubili inqubekelaphambili yokwakha kanye nekhwalithi yephrojekthi.