Imboni yamaphaneli esandwich ithembele ezintweni zokugcwalisa ezisebenza kahle kakhulu ezihlinzeka ngokushisa, ukumelana nomlilo kanye nokuqina kwesakhiwo. Ama-catalyst e-polyurethane (isb.I-MXC-5, MXC-8, MXC-41) zidlala indima ebalulekile ekukhiqizweni kwalezi zinto, zisiza ekufezeni ukusabela kwamakhemikhali okusheshayo nokuphumelelayo enqubweni yokukhiqiza igwebu. Izinto ezisetshenziswa kakhulu ku-sandwich core yizinto ezingaphili njenge-polyurethane (PUR), i-polyisocyanurate (PIR), i-polystyrene, i-phenolic foam (PF) kanye noboya bedwala. Leli phepha linikeza umbono jikelele walezi zinto nokuthi ama-polyurethane catalysts angasiza kanjani ekuthuthukisweni nasekusetshenzisweni kwawo kumaphaneli e-sandwich.
Izinto Zokugcwalisa Ezivamile Zamaphaneli Esandwich
Izinto ezisetshenziswa kuma-core ephaneli yesangweji zingahlukaniswa ngezigaba ezimbili eziyinhloko: izinto ezisekelwe ku-foam kanye nezinto zefayibha ezingaphili. Uhlobo ngalunye lwezinto lunikeza izici ezihlukile ezenza lufanelekele izinhlelo ezithile, kuye ngezidingo zokushisa, zesakhiwo, kanye nokumelana nomlilo zephaneli.
Izinto Zegwebu
1. I-Polyurethane (PUR) kanye ne-Polyisocyanurate (PIR):
I-Polyurethane (PUR) kanye ne-polyisocyanurate (PIR) yizinto ezimbili ezisetshenziswa kakhulu ekukhiqizweni kwamaphaneli e-sandwich. Lezi zinto zikhiqizwa ukusabela kwama-polyol kanye nama-isocyanates aqhutshwa izinto ezifana ne-MXC-5,I-MXC-8, kanye ne-MXC-41. Umsebenzi wokuvuselela uqinisekisa ukuthi igwebu liyakhula, liyaphola futhi libophana ngempumelelo ngaphakathi kwesakhiwo sepuleti lesandwich.
- Ukunamathela kanye nobuqotho besakhiwo:Esinye sezizathu eziyinhloko zokusebenzisa i-PUR/PIR kumaphaneli esandwich yizakhiwo zayo ezinhle kakhulu zokubopha. Ngesikhathi senqubo yokufaka igwebu, i-PUR ne-PIR zinamathela kahle ezintweni ezingaphezulu njengezikhumba zensimbi noma ze-aluminium, ngaleyo ndlela zithuthukisa ubuqotho besakhiwo sephaneli. Lesi sici senza la magwebu abe ukukhetha okubanzi kwemigqa ye-laminating, njengoba isibopho esiqinile sibalulekile ekuzinzeni.
- Ukumelana Nomlilo Okuthuthukisiwe:Ukwakheka kwamakhemikhali kwe-PUR/PIR foam kuye kwathuthuka eminyakeni edlule, njengoba kunjalo nangokumelana kwayo nomlilo, okuyisici esibalulekile sezinhlelo zokusebenza zesakhiwo lapho kudingeka kuhlangatshezwane nemithetho eqinile yokuphepha komlilo. I-PIR, ikakhulukazi, inokumelana nomlilo okungcono kune-PUR, okwenza kube ukukhetha okubanzi kwezinhlelo zokusebenza ezinobungozi obukhulu.
2. I-Polystyrene (EPS/XPS):
I-Polystyrene, okuhlanganisa i-polystyrene enwetshiwe (EPS) kanye ne-polystyrene enwetshiwe (XPS), ingenye into ye-foam esetshenziswa kuma-sandwich panels. Nakuba ingasetshenziswa kakhulu njenge-PUR/PIR, i-polystyrene inikeza izakhiwo ezinhle kakhulu zokuvikela ukushisa. Kodwa-ke, izakhiwo zayo zokunamathela aziqinile njenge-PUR/PIR, ngakho-ke kungenzeka zingafaneleki ezinhlelweni ezidinga amandla aphezulu esakhiwo.
- Ukushisa Okushisayo:I-Polystyrene inikeza ukuvikela ukushisa okuhle kakhulu ngentengo ephansi uma kuqhathaniswa nezinye izinto, okwenza kube ukukhetha okuthandwayo kumaphrojekthi azwela izindleko. Kodwa-ke, ayinawo amandla okumelana nomlilo kanye nokubopha okunikezwa yi-PUR kanye ne-PIR.
3. I-Phenolic Foam (PF):
I-foam ye-phenolic intsha uma iqhathaniswa nezinye izinto ze-foam futhi ayisetshenziswa kakhulu ekukhiqizweni kwamaphaneli e-sandwich. Kodwa-ke, inikeza inzuzo eyodwa ebalulekile: ukumelana nomlilo okuphezulu. I-foam ye-phenolic inokumelana nomlilo okungcono kakhulu phakathi kwezinto ze-foam, okwenza ifaneleke ukusetshenziswa lapho ukuphepha komlilo kuyinto eza kuqala.
- Ukumelana Nomlilo:Ukwakheka kwamakhemikhali okuhlukile kwe-phenolic foam kuyivumela ukuthi imelane namazinga okushisa aphezulu ngaphandle kokuphazamisa ubuqotho besakhiwo. Naphezu kokusebenza kwayo okuhle kakhulu komlilo, i-phenolic foam ayisetshenziswa kabanzi ngenxa yezindleko zayo eziphakeme kanye nokutholakala kwayo okulinganiselwe.
Izinto Zefayibha Ezingaphili
1. Uboya be-Rock:
I-Rockwool, into engeyona i-fiber ephilayo, isetshenziswa kuma-sandwich panel cores ngenxa yokumelana kwayo okuhle kakhulu nomlilo kanye nezakhiwo zayo zokuvimbela umsindo. Ngokungafani nezinto ze-foam, i-rockwool ayishi, okwenza kube ukukhetha okuhle kwezicelo ezilinganiselwe umlilo.
- Ukushisa kanye Nokushiswa Komsindo:I-Rockwool inikeza ukuvikelwa kokushisa okusebenzayo, yize ingekho phezulu njengezinto ezithile ze-foam. Ngaphezu kwalokho, isakhiwo sayo se-fiber sisiza ekunciphiseni umsindo, okwenza ifaneleke ukusetshenziswa okudinga ukunciphisa umsindo.
- Ukumelana Nomlilo:Inzuzo eyinhloko yeRockwool ukuthi ayishisi. Ingamelana namazinga okushisa aphezulu kakhulu, okwenza kube ukukhetha okuthandwayo kwezakhiwo ezidinga ukuvikelwa komlilo okuthuthukisiwe.
Indima Yama-Polyurethane Catalysts Ekukhiqizweni Kwamaphaneli E-Sandwich
Ama-catalyst e-polyurethane afana ne-MXC-5, MXC-8, kanye ne-MXC-41 abalulekile ekukhiqizweni kahle kwezinto ze-foam ezisetshenziswa kuma-sandwich panels. Lawa ma-catalyst asheshisa ukusabela kwamakhemikhali phakathi kwama-polyol nama-isocyanates, okuqinisekisa ukuthi i-foam ikhula ngokulinganayo futhi iyelapheka ngempumelelo. Ngaphandle kwama-catalyst, ukusabela bekuyoba kancane futhi kungaphelele, okuholela ku-foam esezingeni eliphansi enezakhiwo zokubopha ezinganele kanye nokuvikela.
- Ukulawula Ukusabela:Ama-catalyst alawula izinga lokwakheka kwe-foam, aqinisekisa ukuthi i-foam iyakhula ukuze igcwalise yonke ingqikithi yephaneli ye-sandwich. Aphinde athinte ibhalansi phakathi kokusabela kokushaywa kanye nokuguqulwa kwe-gelation, okwenza ngcono ubuningi be-foam kanye nesakhiwo seseli.
- Izinto Okucatshangelwayo Ngezemvelo:Ama-catalyst amaningi e-polyurethane anamuhla aklanyelwe ukunciphisa ukukhishwa kwe-volatile organic compound (VOC) nokuthuthukisa ukuphepha kwemvelo. Ama-catalyst angenaphunga eliphansi, angenawo ukukhishwa kwegesi, njenge-MXC-41, anegalelo ekukhiqizweni kwamaphaneli e-sandwich anobungani nemvelo.
Isiphetho
Ekukhiqizweni kwamaphaneli e-sandwich, ukukhetha izinto zokugcwalisa ezifanele kubalulekile ekuhlangabezaneni nezidingo zokuphepha kokushisa, kwesakhiwo, kanye nokuphepha komlilo. Izinto ezisekelwe ku-foam ezifana ne-PUR, i-PIR, i-polystyrene, kanye ne-phenolic foam, kanye nezinto ezingaphili njenge-rockwool, ngayinye inikeza izinzuzo ezihlukile. Ama-catalyst e-polyurethane afana ne-MXC-5, i-MXC-8, kanye ne-MXC-41 adlala indima ebalulekile ekuqinisekiseni ukukhiqizwa okuphumelelayo kwezinto ze-foam ezisebenza kahle kakhulu. Lezi zi-catalyst zisheshisa ukusabela kwamakhemikhali okudala i-foam, okuhlinzeka ngokubopha okuthuthukisiwe, ukuvikela ukushisa, kanye nokumelana nomlilo okubalulekile ezicelweni zokwakha zanamuhla.
Isikhathi sokuthunyelwe: Okthoba-24-2024