Pāpaho PTFEʻO ka maʻamau, pili ia i kahi mea hana i hana ʻia me ka polytetrafluoroethylene (PTFE no ka pōkole). Eia kahi hoʻolauna kikoʻī i ka mea hana PTFE:

Ⅰ. Nā waiwai mea

1. Paʻa kemika

He mea paʻa loa ka PTFE. Loaʻa iā ia ke kūpaʻa kemika ikaika a he inert i aneane nā kemika āpau. No ka laʻana, i ke kaiapuni o nā waikawa ikaika (e like me ka sulfuric acid, nitric acid, a pēlā aku), nā kumu ikaika (e like me ka sodium hydroxide, a pēlā aku) a me nā mea hoʻoheheʻe organik he nui (e like me benzene, toluene, a pēlā aku), ʻaʻole e pane kemika nā mea PTFE. ʻO kēia ka mea e kaulana loa ai i nā noi e like me nā sila a me nā uhi paipu i nā ʻoihana kemika a me nā lāʻau lapaʻau, no ka mea, pono pinepine kēia mau ʻoihana e hana me nā ʻano kemika paʻakikī like ʻole.

2. Ke kū'ē ʻana i ka mahana

Hiki i nā pāpaho PTFE ke mālama i kāna hana ma luna o kahi ākea o ka mahana. Hiki iā ia ke hana maʻamau ma ka pae mahana o -200℃ a i 260℃. I nā mahana haʻahaʻa, ʻaʻole ia e palupalu; i nā mahana kiʻekiʻe, ʻaʻole ia e palaho a hoʻololi paha e like me kekahi mau plastics maʻamau. ʻO kēia kūpaʻa mahana maikaʻi e hoʻolilo i nā pāpaho PTFE i mea nui i nā hoʻohana ʻana i ka aerospace, nā mea uila a me nā ʻoihana ʻē aʻe. No ka laʻana, i loko o ka ʻōnaehana hydraulic o kahi mokulele, hiki i nā pāpaho PTFE ke kū i ka mahana kiʻekiʻe i hana ʻia e nā loli o ka mahana ambient a me ka hana ʻōnaehana i ka wā lele.

3. Ka helu haʻahaʻa haʻahaʻa

He haʻahaʻa loa ka coefficient friction o ka PTFE, ʻo ia kekahi o nā mea paʻa i ʻike ʻia. He liʻiliʻi loa kona mau coefficient friction dynamic a me static, ma kahi o 0.04. ʻO kēia ka mea e hoʻolilo ai i ka PTFE dielectric i mea maikaʻi loa ke hoʻohana ʻia ma ke ʻano he lubricant i nā ʻāpana mechanical. No ka laʻana, i kekahi mau mea hoʻoili mechanical, hiki i nā bearings a i ʻole nā ​​​​bushings i hana ʻia me ka PTFE ke hōʻemi i ka friction ma waena o nā ʻāpana mechanical, hoʻemi i ka hoʻohana ʻana i ka ikehu, a hoʻolōʻihi i ke ola lawelawe o nā lako.

4. Hoʻopaʻa uila

He maikaʻi nā waiwai insulation uila o ka PTFE. Mālama ia i ke kū'ē insulation kiʻekiʻe ma luna o kahi alapine ākea. I nā lako uila, hiki ke hoʻohana ʻia ka PTFE dielectric e hana i nā mea insulating, e like me ka papa insulation o nā uea a me nā kaula. Hiki iā ia ke pale i ka leakage o ke au, hōʻoia i ka hana maʻamau o nā lako uila, a pale aku i ka hoʻopilikia electromagnetic o waho.

No ka laʻana, i loko o nā kaula kamaʻilio wikiwiki, hiki i ka papa insulation PTFE ke hōʻoia i ka paʻa a me ka pololei o ka hoʻouna ʻana i nā hōʻailona.

5.ʻAʻole e pipili

He ikaika ka ʻili o ka PTFE dielectric i ka pale ʻole. ʻO kēia no ka mea he kiʻekiʻe loa ka electronegativity o nā ʻātoma fluorine i loko o ke ʻano molekala PTFE, e paʻakikī ai i ka ʻili PTFE ke hoʻopili kemika me nā mea ʻē aʻe. ʻO kēia pale ʻole e hoʻohana nui ʻia ai ka PTFE i nā uhi no nā mea kuke (e like me nā pā ʻaʻole e pipili). Ke kuke ʻia ka meaʻai i loko o kahi pā ʻaʻole e pipili, ʻaʻole ia e pipili maʻalahi i ka paia o ka pā, e maʻalahi ai ka hoʻomaʻemaʻe a hoʻemi i ka nui o ka momona i hoʻohana ʻia i ka wā kuke.