No nā makahiki he kanaono i ʻike ʻia a ʻike ʻia ʻo Polytetrafluoroethylene (PTFE, nā inoa inoa: Tarflen, polymer, Fluon) no kāna mau waiwai kūʻokoʻa.Hoʻohana nui ʻia ia ma nā lālā āpau o ka ʻoihana, me ka hana ʻana o ka flexiblehoseso na hana like ole a me ka hoohana ana.
ʻO nā waiwai kūʻokoʻa PTFE:
- Kūleʻa kemika maikaʻi loa.ʻAʻole ia e hoʻoheheʻe a pehu paha i loko o kekahi o nā solvents i ʻike ʻia.He kūpaʻa ia i nā ʻakika a me nā kumu koʻikoʻi.Kakaikahi wale na mea laha ole (fluorine, paila alkali metala, oxygen bifluoride, chlorine trifluoride) hiki ke hoopilikia i ka PTFE.ʻO ka PTFE e noho maʻalahi a hiki i ka mahana o ka helium wai (-269 ° C) .ʻO ka mahana hana no nā paipu i hana ʻia me ka PTFE maʻamau mai -70 ° C a hiki i +260 ° C ma muli o ka hoʻolālā hose (hoʻomaka ka emi ʻana o ke kaomi a me nā ʻāpana mechanical o PTFE ke piʻi ka mahana ma luna o +130 ° C).- Ke kū'ē i ka ʻelemakule. a me ke ano o ka lewa.ʻO ka PTFE he hydrophobic, kūʻokoʻa i ka ozone, oxygen, kukui a me UV radiation.ʻAʻole i hōʻike ʻia nā hoʻololi i nā waiwai PTFE nā laʻana no kekahi mau kakini makahiki i nā ʻano ʻano ʻano like ʻole.No laila, ʻo nā hoses i hana ʻia i ka PTFE he mau mea hoʻomaʻemaʻe ponoʻī (ʻaʻole pili nā mea i nā paia o ka hose) no laila ke maʻemaʻe loa ka hoʻoili.
Nā mea ʻē aʻe e like me PTFE
Hiki ke hana ʻia nā hoses mai PTFE wale nō akā mai nā copolymers PTFE.Hōʻike maʻamau lākou i ke kūpaʻa kemika a me ka wela akā ʻokoʻa iki nā waiwai ʻē aʻe i ka hoʻohālikelike ʻana me PTFE (ʻoi aku ka maikaʻi o ka mechanical resistance, ʻoi aku ka maikaʻi o ka hoʻoponopono ʻana):
- FEP (polymer FEP, DuPont),- PFA, MFA (polymer PFA, DuPont),- ETFE (Tefzel, DuPont),- ECTFE (Halar).
Iecaianoaaiiuo a me ka hana ana o PTFE hoses
Ma muli o ka viscosity kiʻekiʻe a hiki i nā mahana kokoke i ka decomposition thermal (+415°C),Nā paipu PTFEhana ʻia e ka extruding i ka hui o ka lubricant (paraffin oil) a me ka pauka PTFE.
Nā ʻano o ka hana ʻana o ka hose PTFE:
- Nā paipu paheʻe a ʻāwili ʻole me ke kaula ʻole.Hoʻohana ʻia no nā noi haʻahaʻa haʻahaʻa.ʻO Translucent, ka pā PTFE e ʻae i ka mana ʻike o ke kahe.- ʻO nā paipu maʻemaʻe me ka hoʻokahi a i ʻole ka lua o waho i hana ʻia me ke kila kila.Hoʻohana nui ʻia no nā mea hoʻolaha a pau: nā kemika, nā kinoea, ka mahu, nā ʻaila, nā lubricants, ka wahie, ka pena, nā mea hoʻopili, nā meaʻai ma nā lālā āpau o ka ʻoihana.ʻO ka hui pū ʻana o ke kaomi hana kiʻekiʻe o nā hoses (a hiki i ka 400 bar) a me nā waiwai kūʻokoʻa PTFE e hopena i kahi hopena ākea a hiki ʻole ke hoʻololi ʻia no ka ʻenehana ʻenehana hou.I kekahi manawa hoʻoikaika ʻia me ka helix uea kila ma waena o ka PTFE a me ka braid waho.Hana ʻia i loko o nā koho hana like ʻole me ka haʻahaʻa haʻahaʻa haʻahaʻa akā ʻoi aku ka maʻalahi ma mua o nā puʻupuʻu maʻemaʻe.Hoʻopiliʻia nā papa a pau a hoʻohui mauʻia me ka PTFE o loko - e like me ka hose maʻamau.Hoʻohana nui ʻia i ka ʻoihana kemika.
Ka manawa hoʻouna: Jun-02-2018