PTFEinowanikwa mumaGiredhi akawanda akasiyana seMhandara PTFE, Chemically Modified PTFE, Carbon Filled PTFE, Glass Filed PTFE, Carbon / Coke Yakazadzwa PTFE, Graphite Yakazadzwa PTFE, Bronze Yakazadzwa PTFE, Bronze + Molybdenum Disulphide Yakazadzwa PTFE, Aluminium Oxide Yakazadzwa, Calcide Yakazadzwa F. PTFE Yakazadzwa, Stainless Simbi Yakazadzwa PTFE, Mica Yakazadzwa PTFE, Girazi + MoS2 Yakazadzwa PTFE, MoS2 Yakazadzwa PTFE, Chemically Modified PTFE nezvimwe.
Kubatana pakati penzvimbo mbiri dzinotsvedza, nekuda kwekupokana kusingadzivisike kunogadzirwa munzvimbo yekusangana, kunokonzeresa imwe kupfeka iyo hukuru hunoenderana nemutoro, kumhanya uye nguva yekutsvedza kubata.Sezvineiwo, pakati peaya ma paramita uye mhedzisiro kupfeka kune hukama hunoenderana ne:
R = KPVT
uko, inoratidzwa muzvikamu zvekuyera zvetafura: R = kupfeka mu mmP = mutoro chaiwo muN / mm2 (inoreva pamusoro - Ø xl - kana pane makwenzi, mazamu, nezvimwewo) V = sliding speed in m/secT = nguva mu hrsK = kupfeka chinhu mu mm3 sec/Nmh.
Kukosha kwechinhu PV mushure mezvo iyo coefficient yekupfeka inorasikirwa nemafambiro ayo, ichitora hutsika hunoshamisa nehurongwa hunopfuura kubva kune husina simba kusvika kune yakasimba kupfeka mamiriro, inozivikanwa se "PV muganhu".Iyi PV muganho uye iyo yekupfeka chinhu, saka, hunhu hunhu hwechimwe chinhu.Mukuita, zvisinei, zvinogona kunzwisiswa zviri nyore, iyo yekupfeka chinhu uye iyo PV muganho weiyo yakafanana yakazadzwa zvinhu inogona kusiyanisa zvakare nemasikirwo, kuoma uye kupera kwepamusoro kweimwe yekubata "mudiwa" nekuvapo, kana kwete, zvekutonhodza uye/kana zvinwiwa zvekuzora.
Deformation pasi pemutoro uye kudzvinyirira simba PTFE, kufanana nezvimwe zvakawanda zvepurasitiki zvinhu, hazvina "elastic zone" apo reshiyo mutoro / deformation (Young modulus) ine kukosha nguva dzose.Iyi chiyero mutoro / deformation inoenderana nenguva yekushandiswa kwemutoro uye kunotevera deformation;chiitiko ichi chinozivikanwa se "creep", uye pakubviswa kwemutoro, pane kungodzoka kwechidimbu che deformation kumamiriro ekutanga ("elastic recovery"), kuitira kuti tinogara tiri pamberi pe "permanent deformation". ”.
Kukambaira, sezviri pachena kusiri kuita mutsara wenguva, kunoguma mushure meanopfuura maawa makumi maviri nemana mukuremara uko kazhinji kazhinji kusingatariswe.Nekuwedzera kwekushisa, pane kudonha kwe deformation pasi pezvivakwa zvekutakura uye nekudaro kwesimba rekumanikidza iro ratova pa100 ° C yakaenzana ne1/2 yeiyo pa23 ° C uye pa200 ° C nezve 1/10th.
Chero zvazvingava, PTFE uye kunyanyayakazadza PTFE, ndechimwe chezvinhu zvepurasitiki zvinochengeta, pakupisa kwakanyanya, optimum deformation properties pasi pemutoro.Kupedzisa, iyo elastic kupora mune inenge 50% ye deformations pasi pemutoro, uye iyo yekusingaperi deformation yakaenzana ne50% ye deformations pasi pemutoro.
Izvi zvinoshanda kune yakazadzwa uye isina kuzadzwa PTFE.Zvimiro zvekutanga zvakadaro zvakasarudzwa zviri nani.Kutaura zvazviri, deformation pasi pemutoro wemhando dzakawanda dzePTFE dzakazadzwa dzinenge 1/4 yeayo asina kuzadzwa, asi simba rekumanikidzira rinenge rakapetwa kaviri.
Thermal Properties of Yakazadzwa PTFE
Kuwedzera kwekupisa kwePTFE yakazadzwa kwakaderera kune iyo isina kuzadzwa PTFE uye inogara yakakura munzira yekuumbwa pane kuyambuka.Thermal conductivity inopfuura iyo isina kuzadzwa PTFE, kunyanya kana uchishandisa mafirita ane yakakwirira yekupisa conductivity yavo.
Yakazadzwa PTFE saka ine zviri nani kupisa zvivakwa pane izvo zvisina kuzara.
Magetsi Properties of Yakazadzwa PTFE
Izvi zvimiro zvinoenderana pamwero mukuru pane hunhu hwekuzadza.Chete PTFE izere negirazi faibha ine yakanaka dielectric zvivakwa, kunyangwe zvakasiyana neiyo isina kuzadzwa PTFE.Semuyenzaniso, vhoriyamu uye pamusoro resistivity, dielectric kugara uye dissipation chinhu chinosiyana zvikuru nekusiyana kwehunyoro uye frequency.
Nguva yekutumira: Aug-04-2018