PTFEyana samuwa a cikin nau'o'in nau'i daban-daban kamar Budurwa PTFE, PTFE Mai Gyaran Halitta, Carbon Filled PTFE, Glass Filed PTFE, Carbon / Coke Filled PTFE, Graphite Filled PTFE, Bronze Cika PTFE, Bronze + Molybdenum Disulphide Cika PTFE, Aluminum Oxide Filled PTFE Cika PTFE, Bakin Karfe Cika PTFE, Mica Filled PTFE, Glass + MoS2 Cika PTFE, MoS2 Cika PTFE, Chemical Modified PTFE da dai sauransu.
Alamar da ke tsakanin filaye guda biyu masu zamewa, saboda ɓarkewar da ba makawa da ke haifarwa a yankin lamba, yana haifar da wani lalacewa wanda girmansa ya dogara da kaya, saurin gudu da lokacin hulɗar zamewa.A ka'ida, tsakanin waɗannan sigogi da sakamakon lalacewa yana da alaƙa da:
R = KPVT
inda, aka bayyana a cikin ma'auni na tebur: R = sawa a mmP = ƙayyadaddun kaya a cikin N / mm2 (yana nufin saman - Ø xl - idan akwai bushes, nono, da dai sauransu) V = gudun zamiya a m / secT = lokaci a cikin hrsK = sawa factor a mm3 sec/Nmh.
Ƙimar ƙimar PV bayan haka madaidaicin lalacewa ya rasa halayensa na layi, yana ɗaukar kyawawan dabi'u tare da tsarin da ke wucewa daga rauni zuwa yanayin lalacewa mai ƙarfi, ana kiransa "PV iyaka".Wannan iyaka na PV da abubuwan lalacewa sune, sabili da haka, sifofin halayen kowane abu.A cikin aikace-aikacen, duk da haka, ana iya fahimtar shi da sauƙi, ƙimar lalacewa da iyakar PV na kayan da aka cika da su na iya bambanta kuma tare da yanayi, taurin kai da ƙarewar fuskar sauran "abokin tarayya" tare da kasancewar, ko a'a, na sanyaya da/ko ruwan mai.
Nakasawa a ƙarƙashin kaya da ƙarfin matsawa PTFE, kamar yawancin sauran kayan filastik, ba su da "yankin roba" inda rabon nauyin nauyi / nakasawa (Matsalar modules) yana da ƙimar ƙima.Wannan nauyin nauyi / nakasawa ya dogara da lokacin aikace-aikacen kaya da nakasar da ta biyo baya;ana kiran wannan sabon abu a matsayin "creep", kuma a lokacin cire kaya, akwai kawai dawowar nakasawa zuwa yanayin asali ("madowa na roba"), don haka koyaushe muna cikin gaban "nakasar dindindin". ".
Crep, a fili ba aikin layi na lokaci ba, yana haifar da bayan sa'o'i 24 a cikin nakasar da a mafi yawan lokuta ba a la'akari da su ba.Tare da karuwar zafin jiki, ana samun faɗuwar nakasar da ke ƙarƙashin kayan aiki da kuma sakamakon ƙarfin matsawa wanda ya riga ya kasance a 100 ° C daidai da 1/2 na wancan a 23 ° C kuma a 200 ° C game da 1/10th.
A kowane hali, PTFE kuma musammancika PTFE, yana ɗaya daga cikin kayan filastik da ke riƙewa, a yanayin zafi mai girma, ingantattun kaddarorin nakasa ƙarƙashin kaya.Don ƙarewa, farfadowa na roba a cikin kusan kashi 50% na nakasar da ke ƙarƙashin kaya, da kuma nakasar dindindin ta kasance daidai da kusan 50% na nakasar da ke ƙarƙashin kaya.
Wannan ya shafi duka PTFE da ba a cika ba.Kaddarorin na farko duk da haka sun fi kyau.A zahiri, nakasar da ke ƙarƙashin nauyin nau'ikan nau'ikan PTFE na gama gari sun kasance kusan 1/4 na waɗanda ba a cika ba, yayin da ƙarfin matsawa ya kusan ninki biyu.
Abubuwan thermal na Cikakkun PTFE
The thermal fadada na cike PTFE ne a gaba ɗaya kasa da na unfided PTFE kuma ko da yaushe mafi girma a cikin shugabanci na gyare-gyare fiye da crosswise.Ƙarfin zafin jiki ya fi na PTFE da ba a cika ba, musamman lokacin amfani da filaye da ke da babban ƙarfin zafin nasu.
Cikakkun PTFE saboda haka suna da kyawawan kaddarorin thermal fiye da waɗanda ba a cika ba.
Abubuwan Lantarki na Cikakkun PTFE
Waɗannan kaddarorin sun dogara da babban mataki akan yanayin filler.PTFE kawai cike da fiber gilashin yana da kyawawan kaddarorin dielectric, ko da yake ya bambanta da na PTFE da ba a cika ba.Misali, juriya da juriya na sama, dielectric akai-akai da rarrabuwar kawuna sun bambanta da yawa tare da bambancin zafi da mita.
Lokacin aikawa: Agusta-04-2018