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I-Polymerization kunye nokulungiswa kwe-PTFE

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 ukumiswa polymerization kushishino, usebenzisa persulfate njenge initiator, iqondo lobushushu reaction ingaba phakathi 10-110 degrees Celsius, le ndlela ingafumana eliphezulu kakhulu ubunzima molekyuli PTFE (nokuba ngaphezu kwezigidi ezili-10), akukho chain ebonakalayo ugqithiso lwenzeka.

Ekubeni indawo yokunyibilika ye-PTFE iphezulu kakhulu, ekufutshane nobushushu bokubola, kwaye ubunzima bayo bemolekyuli abukho buncinci, phantse akunakwenzeka ukufezekisa umlinganiselo wokunyibilika ofanelekileyo 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.Isixa sezi 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 iteyiphu, ukukhuselwa ngaphandle kocingo, umbhobho wangaphakathi, iinxalenye zomatshini, i-labware, njl.


Ixesha lokuposa: Aug-29-2022