PTFEimapezeka m'magiredi osiyanasiyana monga Virgin PTFE, Chemically Modified PTFE, Carbon Filled PTFE, Glass Filed PTFE, Carbon / Coke Filled PTFE, Graphite Filled PTFE, Bronze Filled PTFE, Bronze + Molybdenum Disulphide Yodzaza PTFE, Aluminium Oxide Fed Fluder PTFE Yodzaza, PTFE Yodzazidwa ndi Zitsulo Zosapanga dzimbiri, Mica Yodzaza PTFE, Galasi + MoS2 Yodzaza PTFE, MoS2 Yodzaza PTFE, Chemically Modified PTFE etc.
Kulumikizana pakati pa malo awiri otsetsereka, chifukwa cha mikangano yosapeŵeka yomwe imapangidwa m'dera la kukhudzana, kumapangitsa kuvala kwina komwe kukula kwake kumadalira katundu, liwiro ndi nthawi yokhudzana ndi kutsetsereka.Mwachidziwitso, pakati pa magawo awa ndi kuvala kotsatirapo pali ubale wolingana ndi:
R = KPVT
kumene, zosonyezedwa mu mayunitsi kuyeza tebulo: R = kuvala mmP = katundu enieni mu N/mm2 (ponena za pamwamba - Ø xl - ngati tchire, nsonga zamabele, etc.)V = kutsetsereka liwiro mu m/gawo = = nthawi mu hrsK = kuvala chinthu mu mm3 sec/Nmh.
Phindu la chinthu PV pambuyo pake coefficient of wears imataya khalidwe lake laling'ono, kuganiza zamtengo wapatali ndi dongosolo lomwe limadutsa kuchokera ku zofooka mpaka kuvala mwamphamvu, limadziwika kuti "PV malire".Malire a PV awa ndi mavalidwe, motero, magawo azinthu zilizonse.Pochita, komabe, zitha kuzindikirika mosavuta, chovala ndi malire a PV azinthu zodzazidwa zomwezo zimatha kusiyanasiyananso ndi chilengedwe, kuuma ndi kutha kwapamtunda kwa "mnzako" wolumikizana ndi kukhalapo, kapena ayi, za kuziziritsa ndi/kapena zothira mafuta.
Deformation pansi katundu ndi compressive mphamvu PTFE, monga ambiri zipangizo pulasitiki, alibe "zotanuka zone" kumene chiŵerengero katundu / mapindikidwe (Young modulus) ali ndi mtengo nthawi zonse.Chiŵerengero cha katundu / kusinthaku kumadalira nthawi yogwiritsira ntchito katunduyo ndi zowonongeka zomwe zikubwera;chodabwitsa ichi chimadziwika kuti "zokwawa", ndipo pakuchotsa katunduyo, pali kubwerera pang'ono kwa deformation ku chikhalidwe choyambirira ("elastic recovery"), kotero kuti nthawi zonse timakhala pamaso pa "kusinthika kosatha." ”.
Kutsika, mwachiwonekere kusakhala kwanthawi yayitali, kumapangitsa kuti pakangodutsa maola 24 pakhale zopindika zomwe nthawi zambiri sizimaganiziridwa.Ndi kutentha kowonjezereka, pali kugwa kwa deformation pansi pa katundu wa katundu ndipo chifukwa cha mphamvu yopondereza yomwe ili kale pa 100 ° C yofanana ndi 1/2 ya izo pa 23 ° C ndi 200 ° C pafupifupi 1/10th.
Mulimonsemo, PTFE makamakaodzaza PTFE, ndi chimodzi mwa zinthu pulasitiki kusunga, pa kutentha, akadakwanitsira deformation katundu pansi katundu.Pomaliza, kuchira zotanuka pafupifupi 50% ya deformations pansi katundu, ndi deformations okhazikika ndi ofanana pafupifupi 50% ya deformations pansi katundu.
Izi zikugwira ntchito ku PTFE yodzazidwa ndi yosadzazidwa.Komabe, zoyambazo zimakhala zapamwamba kwambiri.Ndipotu, mapindikidwe pansi pa katundu wa mitundu yowonjezereka ya PTFE yodzazidwa ndi pafupifupi 1/4 ya osadzazidwa, pamene mphamvu yopondereza ili pafupi kawiri.
Thermal Properties of Filled PTFE
Kukula kwamafuta odzaza PTFE kumakhala kotsika kwambiri poyerekeza ndi PTFE yosadzazidwa ndipo nthawi zonse kumakhala kokulirapo pakuwumba kuposa kuwoloka.Thermal conductivity ndi wapamwamba kuposa wa PTFE wosadzazidwa, makamaka pogwiritsa ntchito zodzaza zomwe zimakhala ndi matenthedwe apamwamba awoawo.
PTFE yodzazidwa motero imakhala ndi zinthu zabwino zotenthetsera kuposa zomwe sizinadzazidwe.
Zida Zamagetsi Zodzaza PTFE
Izi zimadalira pamlingo waukulu pamtundu wa zodzaza.PTFE yokhayo yodzazidwa ndi magalasi fiber imakhala ndi dielectric properties, ngakhale zosiyana ndi za PTFE zosadzazidwa.Mwachitsanzo, voliyumu ndi resistivity pamwamba, dielectric constant ndi dissipation factor zimasiyana kwambiri ndi kusiyanasiyana kwa chinyezi ndi ma frequency.
Nthawi yotumiza: Aug-04-2018