Izici Zomzimba Nemishini Ye-PTFE Egcwalisiwe

I-PTFEitholakala ngamaBanga amaningi ahlukene njenge-Virgin PTFE, Chemically Modified PTFE, Carbon Filled PTFE, Glass Filed PTFE, Carbon / Coke Filled PTFE, Graphite Filled PTFE, Bronze Filled PTFE, Bronze + Molybdenum Disulphide Egcwele PTFE, Aluminium Oxide Egcwele I-Flude Fluori I-PTFE Egcwele, I-PTFE Egcwele Insimbi Engagqwali, I-Mica Egcwele I-PTFE, I-Glass + I-PTFE egcwele i-MoS2, i-PTFE egcwele i-MoS2, i-PTFE eguqulwe ngokwekhemikhali njll.

Ukuxhumana phakathi kwezindawo ezimbili ezishelelayo, ngenxa yokungqubuzana okungenakugwemeka okukhiqizwa endaweni yokuxhumana, kubangela ukuguga okuthile ubukhulu bawo buncike emthwalweni, isivinini kanye nesikhathi sokuxhumana ngokuslayida.Ngokombono, phakathi kwalawa mapharamitha kanye nokugqokwa okuwumphumela kukhona ukuhlobana okulinganiselwe:

R = KPVT

lapho, kuvezwe kumayunithi wokulinganisa wethebula:R = wear in mmP = umthwalo othize ku-N/mm2 (kubhekiselwa endaweni engaphezulu – Ø xl – uma kunezihlahla, izingono, njll.)V = isivinini sokushelela ku-m/secT = isikhathi ku-hrsK = isici sokugqoka ku-mm3 sec/Nmh.

Inani le-factor PV ngemva kwalokho i-coefficient yokugqoka ilahlekelwa ukuziphatha kwayo okuqondile, kucatshangelwa amanani aphawulekayo ngesistimu edlulayo ukusuka esimweni esibuthakathaka ukuya esimweni esinamandla sokugqoka, eyaziwa ngokuthi "umkhawulo we-PV".Lo mkhawulo we-PV kanye nesici sokugqoka, ngakho-ke, amapharamitha ayisici wento ngayinye.Kodwa-ke, ekusebenzeni, kungabonakala kalula, isici sokugqoka kanye nomkhawulo we-PV wezinto ezifanayo ezigcwalisiwe zingahluka futhi ngemvelo, ubulukhuni kanye nokuqedwa kwendawo yomunye othintana naye "umlingani" nobukhona, noma cha, zokupholisa kanye/noma uketshezi lokuthambisa.

I-Deformation ngaphansi komthwalo namandla acindezelayo i-PTFE, njengezinye izinto eziningi zepulasitiki, ayinayo “indawo enwebekayo” lapho isilinganiso somthwalo/ukuguqulwa (i-Young modulus) sinenani elingaguquki.Lesi silinganiso somthwalo/ukuguqulwa sincike esikhathini sokusetshenziswa komthwalo kanye nokukhubazeka okulandelayo;lesi senzakalo saziwa ngokuthi "i-creep", futhi ekususweni komthwalo, kukhona ukubuyisela ingxenye kuphela ye-deformation esimweni sokuqala ("ukubuyiswa kwe-elastic"), ukuze sihlale sikhona "nokuguqulwa okungapheli ”.

I-Creep, ngokusobala akuwona umsebenzi wesikhathi olandelanayo, umphumela ngemuva kwamahora angaphezu kwama-24 ekugugekeni okuthi ezimweni eziningi kungacatshangwa.Ngokukhuphuka kwezinga lokushisa, kukhona ukwehla kokuwohloka ngaphansi kwezakhiwo zomthwalo futhi ngenxa yalokho amandla okucindezela asevele aku-100 ° C alingana no-1/2 walokho ku-23 ° C futhi ku-200 ° C cishe ku-1/10th.

Kunoma yikuphi, i-PTFE futhi ikakhulukaziigcwaliswe i-PTFE, ingenye yezinto zepulasitiki ezigcinayo, emazingeni okushisa aphezulu, izakhiwo ezinhle zokuguquguquka ngaphansi komthwalo.Ukuphetha, ukululama okunwebekayo cishe ku-50% wokukhubazeka ngaphansi komthwalo, kanye nokukhubazeka okuhlala njalo kulingana no-50% wokukhubazeka ngaphansi komthwalo.

Lokhu kusebenza kokubili ku-PTFE egcwalisiwe nengagcwalisiwe.Izakhiwo zokuqala nokho ziphakeme kakhulu.Eqinisweni, ukuwohloka ngaphansi komthwalo wezinhlobo ezivame kakhulu ze-PTFE egcwele cishe i-1/4 yalezo ezingagcwalisiwe, kuyilapho amandla okucindezela acishe aphindwe kabili.

Izakhiwo ezishisayo ze-PTFE egcwalisiwe

Ukunwetshwa okushisayo kwe-PTFE egcwele kungaphansi ngokujwayelekile kunaleyo ye-PTFE engagcwalisiwe futhi kuhlale kukhulu ngasendleleni yokubumba kunokuwela.I-thermal conductivity iphakeme kunaleyo ye-PTFE engagcwalisiwe, ikakhulukazi uma kusetshenziswa izigcwalisi ezine-conductivity ephezulu ye-thermal yazo.

Ngakho-ke i-PTFE egcwele inezinto ezishisayo ezingcono kunalezo ezingagcwalisiwe.

Izakhiwo zikagesi ze-PTFE egcwalisiwe

Lezi zakhiwo zincike ngezinga elikhulu kumvelo yesigcwalisi.I-PTFE kuphela egcwele i-fiber yengilazi enezinto ezinhle ze-dielectric, nakuba zihlukile kulezo ze-PTFE engagcwalisiwe.Isibonelo, ivolumu ne-surface resistivity, i-dielectric constant kanye ne-dissipation factor iyahluka kakhulu ngokuhlukahluka komswakama kanye nemvamisa.