Nā Waiwai PTFE a me ka hoʻoponopono huahana PTFE

ʻO ka PTFE he polymer thermoplastic, he paʻa keʻokeʻo ma ka lumi wela, me ka nui o 2200 kg / m3.Mālama ʻo ia i ka ikaika kiʻekiʻe, paʻakikī a me ka lubrication ponoʻī ma nā haʻahaʻa haʻahaʻa a hiki i 5 K (−268.15 °C; −450.67 °F), a me ka hoʻololi maikaʻi i nā mahana ma luna o 194 K (−79 °C; −110 °F).Loaʻa ka PTFE i kāna mau waiwai mai ka hopena aggregate o nā kaula kalapona-fluorine, e like me nā fluorocarbons a pau.ʻO nā kemika wale nō i ʻike ʻia e pili ana i kēia mau mea paʻa kalapona-fluorine he mau metala reactive loa e like me nā metala alkali, a ma nā mahana kiʻekiʻe e like me nā metala e like me ka aluminika a me ka magnesium, a me nā mea hana fluorinating e like me xenon difluoride a me cobalt(III) fluoride.

Hoʻohana pinepine ʻia ka coefficient o friction o nā plastics me ke kila i poni ʻia.He 0.05 a hiki i ka 0.10 ka helu o ka piliki o PTFE, ʻo ia ke kolu-haʻahaʻa loa o kekahi mea paʻa i ʻike ʻia.ʻO ke kū'ēʻana o PTFE i nā pūʻali van der Waals,ʻo ia wale nō kaʻili iʻikeʻia kahi hikiʻole i ka gecko ke hoʻopaʻa.He pahee loa ka PTFE i hiki ole ai i na inike ke hopu a haule iho.

Ma muli o kona inertness kemika, ʻaʻole hiki ke hoʻopili ʻia ka PTFE e like me ka elastomer.No laila, ʻaʻohe ona "hoʻomanaʻo" a hiki ke kolo.Ma muli o kāna mau waiwai kemika a me ka wela, hoʻohana pinepine ʻia ʻo PTFE ma ke ʻano he gasket material i loko o nā ʻoihana e koi ai i ke kūʻē ʻana i nā kemika koʻikoʻi e like me nā lāʻau lapaʻau a i ʻole ka hana kemika.Eia nō naʻe, ma muli o ka makemake e kolo, ʻoi aku ka ʻino o ka hana lōʻihi o ia mau sila ma mua o nā elastomers e hōʻike ana i ka zero, a i ʻole kokoke-zero, nā pae kolo.

Hiki ke paʻakikī a pipiʻi ka hoʻoponopono ʻana i ka PTFE, no ka mea, ʻoi aku ka wela o ka hoʻoheheʻe kiʻekiʻe, 327 °C (621 °F), ma luna o ka mahana decomposition mua, 200 °C (392 °F).ʻOiai ke hoʻoheheʻe ʻia, ʻaʻole kahe ʻo PTFE, akā ke hana nei me he gel ma muli o ka nele o ka māhele crystalline a me ka viscosity hehee kiʻekiʻe.

Hana ʻia kekahi mau ʻāpana PTFE e ka hoʻoheheʻe anuanu, kahi ʻano o ka hoʻoheheʻe ʻana.Maʻaneʻi, ua koi ʻia ka PTFE pauka maikaʻi i loko o kahi ʻano ma lalo o ke kaomi kiʻekiʻe.Ma hope o kahi manawa hoʻonā, e mau ana mai nā minuke a i nā lā, e hoʻomehana ʻia ka ʻōpala ma 360 a 380 degere Celsius, e ʻae ana i nā ʻāpana maikaʻi e hoʻohui i hoʻokahi nuipa.