Kweanopfuura makore makumi matanhatu Polytetrafluoroethylene (PTFE, mazita emhando: Tarflen, polymer, Fluon) yave ichizivikanwa uye ichizivikanwa nekuda kwayo yakasarudzika zvivakwa.Inoshandiswa zvakanyanya mumatavi ese eindasitiri, kusanganisira kugadzirwa kweinoshandukahosesyezvakasiyana-siyana zvekuvaka uye kushandiswa.
PTFE yakasarudzika zvivakwa:
- Yakanakisa makemikari kuramba.Iyo hainyungudike kana kuzvimba mune chero ipi zvayo inozivikanwa zvinonyungudutsa.Inoshingirira kune aggressive acids uye mabhesi.Zvishoma chete, zvisingawanzoitiki zvinhu (fluorine, kuvira alkali metals, oxygen bifluoride, chlorine trifluoride) inogona kukanganisa PTFE.- Wide range of thermal resistance.PTFE inoramba ichichinjika kunyange patembiricha yemvura helium (-269°C) .Crystalline melting point yePTFE is +327°C, uye pa +415°C decomposition yePTFE inoitika.Kushanda tembiricha yehosi dzakagadzirwa nePTFE kazhinji dzinobva -70 ° C kusvika +260 ° C zvichienderana nekugadzirwa kwepombi (pressure uye mechanical parameters yePTFE inotanga kuderera kana tembiricha yakwira pamusoro +130 ° C) .- Kuramba kukwegura uye mamiriro ekunze.PTFE is hydrophobic, inoshingirira zvachose kune ozone, okisijeni, chiedza uye UV mwaranzi.Samples dzakafumurwa kwemakore anoverengeka emamiriro ekunze akasiyana-siyana haana kuratidza chero shanduko kune PTFE properties.- PTFE ine yakaderera coefficient of friction (kubva 0.02 kusvika 0.2) uye yakaderera kukosha pamusoro pesimba.Saka hose dzakagadzirwa nePTFE dzine zvinhu zvekuzvichenesa (zvinhu hazvinamatira kumadziro epombi) saka kuendeswa kune hutsanana kwazvo.- Mamiriro akanaka emagetsi, high resistivity.- Kuzvidzimisa zvinhu.- Kuramba kuri pakati nepakati kune abrasion.
Zvimwe zvinhu zvakafanana nePTFE
Hoses inogona kugadzirwa kwete chete kubva kuPTFE asiwo kubva kuPTFE copolymers.Ivo vanowanzo ratidza yakakwira makemikari uye kupisa kwekupisa asi zvimwe zvivakwa zvakati siyanei mukuenzanisa nePTFE (nani mechani kuramba, zvirinani kugadzirisa hunhu):
- FEP (polymer FEP, DuPont),- PFA, MFA (polymer PFA, DuPont),- ETFE (Tefzel, DuPont),- ECTFE (Halar).
Kugadzira uye kuvaka kwePTFE hoses
Nekuda kwepamusoro viscosity kunyangwe tembiricha iri pedyo nekuora kwekupisa (+415°C),PTFE hosesinogadzirwa nekuburitsa musanganiswa wemafuta (parafini mafuta) uye PTFE poda.
Mhando dzePTFE hose kuvaka:
- Yakapfava uye makora hose asina kuruka.Inoshandiswa kune yakaderera pressure application.Translucent, PTFE rusvingo inobvumira kutarisa kwekutarisa kwekuyerera.- Smooth hoses ine imwe chete kana kaviri yekunze braid yakagadzirwa nesimbi isina tsvina.Inoshandiswa zvakanyanya kunenge ese midhiya: makemikari, magasi, chiutsi, oiri, mafuta ekuzora, mafuta, pendi, zvinonamira, chikafu mumapazi ese eindasitiri.Iko kusanganiswa kweakanyanya kushanda kumanikidza kwehose (kusvika kutenderedza 400 bar) uye PTFE yakasarudzika zvivakwa zvinokonzeresa uye isingatsivike mhinduro kune ichangoburwa tekinoroji yeindasitiri.- Corrugated hoses ane ekunze akarukwa akagadzirwa nesimbi isina tsvina kana akasiyana zvinhu.Dzimwe nguva inosimbiswa nesimbi wire helix pakati pePTFE uye yekunze braid.Yakagadzirwa mumhando dzakasiyana-siyana dzekuvaka dzine kuderera kwekushanda kwekushanda asi kushanduka kwepamusoro kudarika kuputika kwemabhosi.- Smooth bore hoses ine extruded PTFE liner ine textile braid, steel wire helix reinforcement uye kunze kwekunze kwerabha.Matunhu ese ane vulcanized uye akabatanidzwa zvachose nePTFE yemukati layer - seyakajairwa rubber hose.Inoshandiswa zvakanyanya muindasitiri yemakemikari.
Nguva yekutumira: Jun-02-2018