Izici zobuchwepheshe zokufafaza kwenkundla eqinile ye-polyurethane field
I-Rigid Foam Polyurethane (PU) impahla yokungenisa i-polymer eneyunithi yokwakheka ephindaphindwayo yengxenye ye-carbamate, eyakheka ukusabela kwe-isocyanate ne-polylol. Ngenxa yokufakelwa kwayo okuhle kakhulu kanye nokusebenza kwamanzi okuhle, kuthola ukusetshenziswa okubanzi kodonga lwangaphandle kanye nokufakwa kophahla, kanye nezindawo ezibandayo, amakamelo okugcina okugcina umlando, amapayipi, ama-windows kanye nezinye izindawo ezikhethekile zokufakwa kwezindawo ezikhethekile zokufakelwa.
Njengamanje, ngaphandle kokufakwa kophahla kanye nokufaka izicelo ezingenamanzi, futhi kusebenza nezinhloso ezahlukahlukene ezifana nezindawo zokugcina ezibandayo kanye nokufakwa kwamakhemikhali aphakathi nendawo.
Ubuchwepheshe obubalulekile bokufakelwa kwesifutho esiqinile se-polyurethane
I-Mastery of Goid Foam Polyurethane Technology inselelo ngenxa yezinkinga ezingaba khona njengezimbobo ezingalingani zegwebu. Kubalulekile ukuthuthukisa ukuqeqeshwa kwabasebenzi bezokwakha ukuze bakwazi ukuphatha kahle amasu okufafaza ngokuzimela nokuxazulula izinkinga zobuchwepheshe okuhlangane nakho ngesikhathi sokwakha. Izinselelo zezobuchwepheshe eziyisisekelo zokufafaza ezakhiwa zigxile kakhulu kulezi zinto ezilandelayo:
Ukulawula isikhathi esimhlophe kanye nomphumela we-atomization.
Ukwakheka kwe-polyurethane Foam kubandakanya izigaba ezimbili: ukugcwala nokwelapha.
Ukusuka esiteji sokuxuba kuze kunwetshwe ukwanda kwevolumu ye-foam - le nqubo yaziwa njenge-foaming. Ngalesi sigaba, ukufana ekusatshalalisweni kwe-bubble hole kufanele kubhekwe lapho kukhishwa inani elikhulu le-ester eshisayo elisebenzayo ohlelweni ngesikhathi sokufafaza imisebenzi. I-Bubble Unipromity ngokuyinhloko incike ezintweni ezinjengokuthi:
1. Ukuphambuka kwezinto ezibonakalayo
Kukhona umehluko omkhulu wokuhlukahluka phakathi kwama-bubble akhiqizwe ngomshini okuqhathaniswa okwenziwe ngesandla. Imvamisa, isilinganiso sezinto ezibonakalayo ezilungisiwe ngomshini zingu-1: 1; Kodwa-ke ngenxa yamazinga we-viscosity ahlukahlukene phakathi kwezinto ezimhlophe zabakhiqizi abakhiqizi - Izilinganiso zangempela zezinto ezibonakalayo kungenzeka zingahambisani nalezi zilinganiso ezihleliwe eziholela ekungabizekisweni kokuqina kwe-foam okususelwa ekusetshenzisweni ngokweqile okumhlophe noma okumnyama.
Ukushisa okungu-2-
Ama-Folyurethane Foams azwela kakhulu ekuguquguqukeni kwezinga lokushisa; Inqubo yabo ye-Foaming ithembela kakhulu ekutholakaleni kokushisa okuvela ekuphendukeni kwamakhemikhali ngaphakathi kohlelo uqobo kanye nezinhlinzeko zemvelo.
Lapho amazinga okushisa akhona aphezulu ngokwanele ukuhlinzekwa ukushisa kwemvelo - kusheshisa ngejubane lokuphendula okuphumela kumagwebu anwetshiwe anwetshwe ngokugcwele anezinqumo ezingaguquki ezingaguquki.
Ngakolunye uhlangothi amazinga okushisa aphansi (isib. Ngaphansi kwe-18 ° C), ukushisa kokushisa okubangelwa ezindaweni ezizungezile kubangela izikhathi zokuvuselela isikhathi eside eceleni kwezindleko zokukhiqiza lapho uphakamisa izindleko.
I-3.Windwi
Ngesikhathi sokufafaza ijubane lomoya kufanele lihlale lingaphansi kwama-5m / s; Ukweqa lo mbundu kuvuse ukushisa okukhiqizwayo okubangelwa amagwebu asheshayo ngenkathi wenza umkhiqizo u-brittle.
Izinga lokushisa le-4.Base & umswakama
Izinga lokushisa elidongeni elithonya kakhulu linomthelela ekusebenzeni kwamandla ka-polyurethane ngesikhathi sezinqubo ikakhulukazi uma i-Ambient & Base Wall Temps iphansi - ukumunca okusheshayo kwenzeka ngemuva kokunciphisa ukuncishiswa kwezinto ezibonakalayo.
Ngakho-ke ukunciphisa izikhathi zokuphumula ze-NOON ngesikhathi kwakhiwa kanye namalungiselelo okuhlela amasu kuba ngcono ekuqinisekiseni inani lokunwetshwa kahle kwe-polyurethane.
I-Gridid Polyurethane Foam imele umkhiqizo we-polymer eyakhiwe ngokuphendula phakathi kwezakhi ezimbili - isocyanate & kuhlangene.
Izakhi ze-isocyanate zisabela kalula ngamanzi akhiqiza amabhondi e-urea; Ukwanda kokuqukethwe kwe-Urea Bond Render kuholele ekunciphiseni i-Foams ngenkathi kuncipha ukunamathela phakathi kwawo kanye nokuphakanyiswa kokunye okuvimbayo izinsuku zemvula lapho amazolo / ubukhona beqhwa kudinga ukususwa okulandelwa yilapho kuqhubeka khona.
Isikhathi sePosi: Jul-16-2024