Amabanga agcwalisiwe e-PTFE angahlanganiswa futhi enziwe ngezifiso izimo ezithile zesevisi nezinhlelo zokusebenza.I-PTFE egcweleamamaki anokuthuthukiswa kwezakhiwo ezithile okusekelwe ku-filler, uhlobo lokugcwalisa kanye namaphesenti okugcwalisa.
Izakhiwo zemishini
Ukuziphatha okucindezelayo kwe-PTFE okugcwele kungenye yezinto ezibaluleke kakhulu kumklami nakumsebenzisi.
Uma kuqhathaniswa ne-PTFE engagcwalisiwe i-modulus yokucindezela ye-PTFE egcwele inkulu ngakho-ke, ngokucindezeleka okufanayo, ukuguqulwa okuphansi kuzokwenzeka.Lo mehluko uyancipha, nokho, njengoba amazinga okushisa enyuka kanye nokusebenza okucindezelayo kwe-PTFE engagcwalisiwe negcwele kusondelene ku-200°C (392°F).Isizathu cishe siqinisekile ukuthi ukuncishiswa okujwayelekile kwemoduli ecindezelayo ye-matrix ye-PTFE kweqa ukusekelwa okunikezwa ukusatshalaliswa okungahleliwe kwezinhlayiya zokugcwalisa.
Izakhiwo zikagesi
Ukwengezwa kwama-filler kunomthelela ophawulekayo ezimpahleni zikagesi futhi.Ikakhulukazi, ama-graphite - kanye nama-carbon agcwele ama-compounds angase abe ne-conductivity ephakeme kakhulu, engasiza ukuchithwa kwezindleko ezimile ezisetshenziswayo lapho lezi ziyinkinga.
I-PTFE egcwele ingxube yezinto, futhi ama-voids - kungakhathaliseki ukuthi mancane kangakanani - ahlala ekhona: njengazo zonke izinto ezimbotshana, izakhiwo zincike esimweni sendawo kanye nanoma yikuphi ukungcoliswa okungahlosiwe.Izakhiwo zikagesi azihlukile futhi zincike ngokuphawulekayo kumswakama wendawo.
Izakhiwo ezishisayo
Ukunwetshwa okushisayo kwezithako eziningi kungaphansi kwalokho kwe-PTFE futhi njengoba ukunwetshwa kwenhlanganisela kuzoba ndawana thize phakathi kwalezi zakhi ezimbili, izinhlanganisela ze-PTFE ezigcwalisiwe zanda ngaphansi kwe-PTFE engagcwalisiwe.Ngesikhathi sokwenza izigcwalisi ezithile, ikakhulukazi imicu namaplatelet, ziba ziqondiswe ngokukhethayo (njengoba kwenza izinhlayiya ze-PTFE ngezinga elincane kakhulu).Umphumela uba ukuthi amanye amakhompiyutha anokwandiswa okuhluke ngokuphawulekayo eziqondisweni ezihambisanayo kanye ne-perpendicular kusiqondiso sokubumba.
I-thermal conductivity ye-PTFE iphansi kakhulu, iyenza ibe yinto enhle yokuvikela ukushisa.Ama-filler amaningi, ikakhulukazi izinsimbi nama-oxide ensimbi, ane-conductivity ephezulu yokushisa, kodwa ngokuvamile ahlanganiswe ngokuphumelelayo yi-PTFE ukuze ukuqhutshwa kwezinhlanganisela kusese kuncane.
Isikhathi sokuthumela: Feb-10-2018