Uma kuziwa ekukhetheni impahla efanele yephrojekthi yakho, kubalulekile ukukala ubuhle nobubi benketho ngayinye. Kulokhu okuthunyelwe kwebhulogi, sizobe siqhathanisa izinto ezimbili ezivamile ezisetshenziswa ekukhiqizeni nasebunjiniyela: irabha ye-silicone ne-viton.
Iyini irabha ye-silicone ne-viton?
Irabha ye-Silicone kanye ne-viton yizinto ezimbili ezivame ukusetshenziselwa ukukhiqiza nobunjiniyela. Zinakho kokubili izinzuzo nezinselele, okufanele kucatshangelwe lapho kunqunywa ukuthi iyiphi ozoyisebenzisela injongo ethile.
Irabha ye-Silicone ne-viton yizinhlobo ezimbili ezihlukene ze-elastomer, noma irabha yokwenziwa. Zombili izinto ezisetshenziswayo zivame ukusetshenziswa ezinhlelweni lapho kudingeka khona ukuguquguquka, ukuqina, nokumelana nokushisa namakhemikhali. Nokho, kunomehluko obalulekile phakathi kwezinto ezimbili okufanele zicatshangelwe lapho kukhethwa impahla yohlelo oluthile.
Irabha ye-Silicone iyi-polymer yokwenziwa eyenziwe nge-silicon nama-athomu omoya-mpilo. Irabha ye-Silicone inezinhlobonhlobo zezicelo ngenxa yenhlanganisela yayo eyingqayizivele yezakhiwo. Iyakwazi ukumelana namazinga okushisa adlulele, kokubili kushisa nokubanda, okuyenza ibe into efanelekile ukuthi isetshenziswe lapho izinga lokushisa liyisici. Irabha ye-Silicone nayo inezici ezinhle kakhulu zokuvala ugesi futhi imelana nokukhanya kwe-UV ne-ozone, iyenze ifanelekele ukusetshenziswa ezinhlelweni zangaphandle. Kodwa-ke, irabha ye-silicone ayinalo izinga elifanayo lokumelana noketshezi olusekelwe ku-petroleum njenge-viton.
I-Viton iyirabha yokwenziwa eyenziwe nge-fluoroelastomer, eyi-copolymer ye-vinylidene fluoride ne-hexafluoropropylene. I-Vinylidene fluoride iyi-ejenti enamandla ye-fluorinating, enikeza i-viton ukumelana kwayo okuhle kakhulu nowoyela, izinto zokubasa, nolunye uketshezi olusekelwe ku-petroleum. I-Viton iphinde imelane namazinga okushisa aphezulu, iyenze ibe yinto ekahle yokusebenzisa ama-gaskets nama-seal ezinjinini nakwezinye izindawo ezinezinga eliphezulu lokushisa. I-Viton ayibhidliki kalula njengerabha ye-silicone uma ibekwe emazingeni okushisa aphezulu. Kodwa-ke, i-viton ayinalo izinga elifanayo lokumelana nokukhanya kwe-UV kanye ne-ozone njengoba kwenza irabha ye-silicone.
Uyini umehluko phakathi kwerabha ye-silicone ne-viton?
Irabha ye-Silicone ne-Viton inomehluko obalulekile ambalwa obahlukanisayo. Okokuqala, irabha ye-silicone inokumelana nokushisa okuphansi kune-Viton, okuyenza ilungele izinhlelo zokusebenza ezingadingi ukumelana nokushisa okungaka. Ukwengeza, irabha ye-silicone ngokuvamile ivumelana nezimo kune-Viton, iyenza ifaneleke kangcono izinhlelo zokusebenza lapho ukuguquguquka kubalulekile. Okokugcina, irabha ye-silicone ngokuvamile ibiza ngaphansi kwe-Viton, okuyenza ibe ukukhetha ukonga kakhulu ezinhlelweni eziningi.
I-Viton® iyirabha yokwenziwa esebenza kakhulu esetshenziswa kakhulu kuma-O-rings, isistimu kaphethiloli nezinhlelo zokusebenza zokulawula ukungcola. I-Viton® nayo ifaneleka kahle ezimbonini eziningi kanye amapayipi ezintambo zezimoto lapho kudingeka ukumelana nezibaseli, uwoyela, izinto zokuthambisa kanye namakhemikhali anolaka.
Irabha ye-Silicone i-elastomer eyakhiwe nge-silicone—yona ngokwayo i-polymer—equkethe i-silicon kanye nomoya-mpilo, ikhabhoni, i-hydrogen, futhi ngezinye izikhathi nezinye izakhi zamakhemikhali. Amarabha e-Silicone asetshenziswa kakhulu embonini, futhi kukhona ukwakheka okuningi. Amarabha e-Silicone avamise ukuba yi-polymer enengxenye eyodwa noma ezimbili, futhi angase aqukathe okokugcwalisa ukuze kuthuthukiswe izakhiwo ezithile.
Yiziphi izinzuzo zenjoloba ye-silicone?
Irabha ye-Silicone inezinzuzo eziningi kunezinye izinhlobo zenjoloba. Iyakwazi ukumelana namazinga okushisa aphakeme, kokubili kushisa nokubanda, futhi ihlala iguquguquka phezu kwezinhlobonhlobo zamazinga okushisa. Iphinde imelane nokuguga, ukukhanya kwe-UV, i-ozone, nomoya-mpilo. Irabha ye-Silicone ayibhidliki kalula, ngakho-ke inokuphila isikhathi eside.
Yiziphi izinzuzo ze-viton?
I-Viton iyirabha yokwenziwa esetshenziswa ezintweni ezahlukahlukene ezidinga ukumelana nokushisa okuphezulu, amakhemikhali, namafutha. Inokumelana okuhle kakhulu nokushisa, amakhemikhali, namafutha, okuyenza ilungele ukuvala izinhlelo zokusebenza. I-Viton futhi imelana kakhulu namazinga okushisa abandayo kunamanye amarabha, okuyenza ilungele ukusetshenziswa ezindaweni eziyingozi kakhulu.
I-silicone irabha ne-viton iqhathaniswa kanjani ngokwezindleko?
Kunomehluko omkhulu ezindlekweni zerabha ye-silicone ne-viton. Irabha ye-Silicone ibiza kancane kune-viton. Umehluko ezindlekweni kungenxa yomehluko wezindleko zokukhiqiza. I-Viton yenziwe ngezinto zokwenziwa, kuyilapho irabha ye-silicone yenziwa ngezinto zemvelo.
I-silicone irabha ne-viton iqhathaniswa kanjani ngokuhlala isikhathi eside?
Irabha ye-Silicone ne-viton kokubili kuyizinto ezihlala isikhathi eside kakhulu. Kodwa-ke, i-viton ihlala isikhathi eside kakhulu kunerabha ye-silicone. I-Viton ingakwazi ukumelana namazinga okushisa aphakeme futhi imelana kakhulu namakhemikhali, kuyilapho irabha ye-silicone iguquguquka kakhudlwana futhi inokuminyana okuphansi.
I-silicone irabha kanye ne-viton iqhathaniswa kanjani mayelana nokumelana namakhemikhali?
Nakuba kokubili irabha ye-silicone ne-viton imelana namakhemikhali amaningi, kunomehluko obalulekile phakathi kwakho kokubili. I-Viton ivamise ukumelana kakhulu namafutha namafutha, kuyilapho irabha ye-silicone imelana kakhulu namanzi nokushisa. Ngokwamakhemikhali athile, i-viton ikwazi kangcono ukumelana ne-acetic acid, i-acetone, namafutha amaminerali, kuyilapho irabha ye-silicone ikwazi kangcono ukumelana ne-benzene, i-Freon, ne-peroxide.
I-silicone irabha ne-viton iqhathaniswa kanjani mayelana nokumelana nokushisa?
Irabha ye-silicone ikwazi ukumelana nezinga lokushisa elifinyelela ku-180°C (356°F), kuyilapho i-viton ikwazi ukumelana nezinga lokushisa elifinyelela ku-200°C (392°F). Mayelana nokumelana nokushisa, i-viton ifaneleka kangcono izinhlelo zokusebenza ezidinga ukuchayeka okunwetshiwe emazingeni okushisa aphezulu.
