I-monomer ye-PTFE yi-tetrafluoroethylene (TFE), kwaye indawo yayo yokubila yi-76.3 degrees Celsius. Iqhuma kakhulu xa kukho ioksijini kwaye inokuthelekiswa nerhuluwa. Ngoko ke, ukuveliswa kwayo, ukugcinwa kunye nokusetyenziswa kwishishini kufuna ukhuseleko olungqongqo kakhulu, imveliso nayo ifuna ukulawulwa, nayo enye yemithombo ephambili yeendleko ze-PTFE. TFE idla ngokusebenzisa free radical ukunqunyanyiswa polymerization kushishino, usebenzisa persulfate njenge initiator, ubushushu reaction linokuba phakathi 10-110 degrees Celsius, le ndlela ingafumana eliphezulu kakhulu ubunzima molekyuli PTFE (nokuba kunokuba phezu 10 million), akukho chain ebonakalayo ugqithiso lwenzeka.
Kuba indawo yokunyibilika ye-PTFE iphezulu kakhulu, ekufutshane nobushushu bokubola, kwaye ubunzima bayo bemolekyuli abukho buncinci, phantse akunakwenzeka ukufezekisa inqanaba lokunyibilika elifanelekileyo ngokuthembela ekufudumezeni njengeepholima ze-thermoplastic eziqhelekileyo. Yenziwa njani iteyiphu yeTeflon okanye ityhubhu yeTeflon? Kwimeko yokubumba, i-PTFE powder igalelwa ngokubanzi kwi-mold, kwaye emva koko ishushu kwaye icinezele ukuba i-sinter powder. Ukuba i-extrusion iyafuneka, iikhompawundi ze-hydrocarbon kufuneka zongezwe kwi-PTFE ukunceda ukuvuselela nokuhamba. Ubungakanani bezi zixhobo ze-hydrocarbon kufuneka zilawulwe ngaphakathi koluhlu oluthile, ngaphandle koko kulula ukubangela uxinzelelo olugqithisileyo lwe-extrusion okanye iziphene ezigqityiweyo zemveliso. Emva kwefom efunwayo, i-hydrocarbon compounds isuswa ngokufudumeza okucothayo, kwaye emva koko ishushu kwaye ifakwe i-sintered ukwenza imveliso yokugqibela.
Ukusetyenziswa kwe-PTFE
Olunye lolona setyenziso luphambili lwe-PTFE lunjengokugquma. Ukusuka kwi-pan encinci ye-non-stick ekhaya ukuya eludongeni lwangaphandle lwetyhubhu yamanzi, unokuva umphumo womlingo wale ngubo. Okunye ukusetyenziswa kukutywina i-tape, ukukhuselwa ngaphandle kocingo, umgqomo wangaphakathi, iinxalenye zomatshini, i-labware, njl.
Ixesha lokuposa: Aug-29-2022