Ukuvela kwePolytetrafluoroethylene (PTFE) – ukusuka kwimveliso ekhethekileyo esetyenziswa kuphela kwizicelo ezixabisa kakhulu ukuya kwimfuno eqhelekileyo kuye kwahamba kancinci kancinci.
Nangona kunjalo, kwiminyaka engamashumi amabini edlulileyo ukusetyenziswa kwe-PTFE kubonakala ngathi kuye kwadlula kubunzima obukhulu, okwenze ukuba ikwazi ukusebenza kwishishini kwiindawo ezingaphezu kwama-200 zoshishino, abathengi kunye nezonyango. Nangona amashiti, iintonga, iingubo kunye nezinto ezisetyenziswayo zibaluleke kakhulu kwimarike yeemveliso ze-PTFE, ityhubhu ye-PTFE kunye nepayipi ye-PTFE ngoku zivela njengendawo ephambili yokukhula.
Izicelo zetyhubhu ye-PTFE
Ukusetyenziswa kweItyhubhu ye-PTFEIsasazeke kwiindawo ezahlukeneyo zokusebenza kuquka iimoto, iikhemikhali, ezombane kunye nezonyango. Itheyibhile 1 ibonisa iimpawu eziphambili ezichaza ukuguquguquka kwetyhubhu ye-PTFE, ngelixa uMzobo 1 ubonisa ukusetyenziswa kwayo kwiinkalo ezahlukeneyo.
Kwizicelo zeemoto, amandla e-PTFE okumelana namaqondo obushushu angaphezulu kwama-250°C ayenza ibe yeyona nto ifanelekileyo yokudluliselwa kolwelo kumaqondo obushushu aphezulu.
Kwizicelo zonyango,Ityhubhu ye-PTFEIfunwa kakhulu ngenxa yokuthamba kwayo kunye nokungasebenzi kakuhle kweekhemikhali. Ii-catheters ezisebenzisa ityhubhu ye-PTFE zinokufakwa emzimbeni womntu ngaphandle koloyiko lokusabela okanye ukukrala nakweyiphi na indawo yomzimba.
Kwizicelo zeekhemikhali – kuquka iilebhu – i-PTFE yeyona ndawo ifanelekileyo yokutshintsha iglasi ngenxa yokungangeni kwayo emanzini nokuqina kwayo.
Kwiinkqubo zombane, iipropati ezintle ze-dielectric ze-virgin PTFE zenza ukuba ifaneleke kakhulu ekugqumeni iintambo zombane eziphezulu.
Iintlobo zetyhubhu yePTFE
Ngokuxhomekeke kwisicelo, ityhubhu ye-PTFE yahlulwe yangamacandelo amathathu abanzi - ngalinye lichazwa bububanzi betyhubhu kunye nobukhulu bodonga (jonga iTheyibhile 2).
Kwanangaphakathi kwiindidi, ityhubhu ye-PTFE ivumela ukwahluka okwahlukeneyo, nganye ivumela ukusetyenziswa okwahlukileyo (jonga iTheyibhile 3):
Ityhubhu ye-PTFE kwimarike yezixhobo zonyango
Ngokubanzi, ityhubhu yespaghetti enobubanzi obuncinci isetyenziswa kwizicelo zonyango. Ukusetyenziswa kwe-PTFE kule ndawo kugxile kwiimpawu ezimbini eziphambili: ukuthambisa kunye nokuhambelana kwezinto eziphilayo. Ii-Fluoropolymers zibonisa ukuthambisa okuhle kakhulu xa kuthelekiswa nezinye iiplastiki. I-PTFE yeyona polymer ithambisayo ifumanekayo, ine-coefficient of friction eyi-0.1, ilandelwa yi-fluorinated ethylene propylene (FEP), ene-0.2. Ezi polymers zimbini zimele uninzi lwazo zonke iityhubhu ze-fluoropolymer ezisetyenziswa kwizixhobo zonyango.
Ukuhambelana kwezinto eziphilayo kwayo nayiphi na ipolymer esetyenziswa kwisixhobo sezonyango kuyinto exhalabisayo ngokucacileyo. I-PTFE igqwesile kule ndawo kwaye inembali ende yokusetyenziswa ngaphakathi emzimbeni. Iifluoropolymers zenqanaba lezonyango kufuneka zihlangabezane neemfuno zovavanyo lwe-USP Class VI kunye ne-ISO 10993. Kakade ke, ukucoca ngokucoca nako kuyinto ebalulekileyo.
Kwiminyaka eli-18 edlulileyo, iBesteflon igxile kakhulu ekuvelisweni kweePTFE Tubes kunye nePTFE hose. Njengabaqalisi kwicandelo lokuvelisa iifluoroplastics, silandela inkonzo esemgangathweni ophezulu kunye nenkonzo yasemva kokuthengisa. Ukuba ungathanda ukuqala ukwenza ngokwezifiso iPTFE tube yesicelo sakho esikhethekileyo, nceda unxibelelane nathi!
Ixesha lokuthumela: Juni-12-2023