PTFE medianthawi zambiri amatanthauza media yopangidwa ndi polytetrafluoroethylene (PTFE mwachidule). Zotsatirazi ndikuyambitsa mwatsatanetsatane kwa PTFE media:

Ⅰ. Zinthu zakuthupi

1.Chemical bata

PTFE ndi zinthu zokhazikika. Imakhala ndi kukana kwamphamvu kwamankhwala ndipo imakhala yopanda pafupifupi mankhwala onse. Mwachitsanzo, m'malo a asidi amphamvu (monga sulfuric acid, nitric acid, etc.), maziko amphamvu (monga sodium hydroxide, etc.) ndi zosungunulira zambiri za organic (monga benzene, toluene, etc.), zipangizo za PTFE sizingagwirizane ndi mankhwala. Izi zimapangitsa kuti zikhale zodziwika kwambiri muzogwiritsira ntchito monga zisindikizo ndi zitoliro zazitsulo mu mafakitale a mankhwala ndi mankhwala, chifukwa mafakitalewa nthawi zambiri amafunika kuthana ndi mankhwala osiyanasiyana ovuta.

2.Kutentha kwa kutentha

PTFE TV akhoza kusunga ntchito yake pa osiyanasiyana kutentha. Itha kugwira ntchito bwino pa kutentha kwa -200 ℃ mpaka 260 ℃. Pakutentha kotsika, sikudzakhala brittle; pa kutentha kwambiri, sichidzawola kapena kupunduka mosavuta monga mapulasitiki ena wamba. Izi zabwino kutentha kukana kumapangitsa PTFE TV ndi ntchito zofunika muzamlengalenga, zamagetsi ndi madera ena. Mwachitsanzo, mu hydraulic system ya ndege, PTFE media imatha kupirira kutentha kwakukulu komwe kumapangidwa ndi kusintha kwa kutentha kozungulira komanso magwiridwe antchito panthawi yowuluka.

3.Low friction coefficient

PTFE ili ndi coefficient yotsika kwambiri yogundana, imodzi mwazotsika kwambiri pakati pa zida zolimba zomwe zimadziwika. Ma coefficients ake amphamvu komanso osasunthika ndi ochepa kwambiri, pafupifupi 0.04. Izi zimapangitsa kuti dielectric ya PTFE ikhale yogwira mtima kwambiri ikagwiritsidwa ntchito ngati mafuta opangira zida zamakina. Mwachitsanzo, pazida zina zamakina opatsirana, ma bearings kapena bushings opangidwa ndi PTFE amatha kuchepetsa kukangana pakati pa zida zamakina, kuchepetsa kugwiritsa ntchito mphamvu, komanso kuwonjezera moyo wautumiki wa zida.

4.Kutchinjiriza kwamagetsi

PTFE ili ndi zida zabwino zotchinjiriza magetsi. Imasunga kukana kwakukulu kwa insulation pamitundu yambiri. Pazida zamagetsi, dielectric ya PTFE itha kugwiritsidwa ntchito popanga zida zotchingira, monga kusanjikiza kwa mawaya ndi zingwe. Itha kuletsa kutayikira kwapano, kuwonetsetsa kuti zida zamagetsi zimagwira ntchito bwino, ndikukana kusokonezedwa ndi ma elekitiroma akunja.

Mwachitsanzo, mu zingwe zoyankhulirana zothamanga kwambiri, wosanjikiza wa PTFE amatha kutsimikizira kukhazikika komanso kulondola kwa kufalitsa ma siginecha.

5.Kusamamatira

Pamwamba pa PTFE dielectric ili ndi kusamata mwamphamvu. Ichi ndi chifukwa electronegativity wa maatomu fluorine mu PTFE maselo dongosolo ndi mkulu kwambiri, kupanga kukhala kovuta kuti PTFE pamwamba mankhwala chomangira ndi zinthu zina. Kusamamatiraku kumapangitsa kuti PTFE igwiritsidwe ntchito kwambiri popaka ziwiya zophikira (monga mapoto osamata). Zakudya zikaphikidwa mu poto yopanda ndodo, sizimamatira pakhoma la poto, zomwe zimapangitsa kuti zikhale zosavuta kuyeretsa ndi kuchepetsa kuchuluka kwa mafuta omwe amagwiritsidwa ntchito pophika.