ʻO ka mālama ʻana o ka ʻili PTFE no ka hoʻopaʻa ʻana adhesion e hoʻohana i nā ʻano kumu ʻelua: ka hoʻoheheʻe ʻana i ka wela kiʻekiʻe (ke kūpaʻa kiʻekiʻe o ka wā, 9.5 MPa ikaika me ka mea hoʻohui, akā hoʻokuʻu i nā kinoea ʻawaʻawa) a me ka etching sodium-naphthalene (5 MPa adhesion koke, haiki 24-48 hola pukaaniani, pōʻino ʻino). E koho ma muli o ka hoʻomalu kaiapuni a me ka hana lōʻihi vs.

ʻO ka hoʻomaʻemaʻe a me ka mālama pono e hoʻolōʻihi i ke ola o ka lole wela wela PTFE. E hoʻomaʻemaʻe ma hope o ka hoʻohana ʻana a ma hope o ka hoʻoluʻu. E hoʻohana i nā pulupulu palupalu, nā mea hoʻomaʻemaʻe kūʻokoʻa, a i ʻole ka waiʻona no nā ʻili. Mai hoʻohana i nā ʻakika/alkalis ikaika, bleach, a i ʻole nā ​​mea ʻoki metala. ʻO ka lubrication ʻaila silicone maʻamau e hōʻemi i ka ʻaʻahu. E hahai i kēia mau kuhikuhi no ka pale ʻana i ka pōʻino o ka uhi.

PTFE kiʻekiʻe-mehana lipine i ilihune kū'ē i ka ionizing radiation. Ma ka 1 kGy gamma wale nō, hāʻule ka ikaika tensile i ~25% o ke kumu. He kūpono wale ia no nā wahi haʻahaʻa haʻahaʻa (meaʻai/lāʻau sterilization <10 kGy). No ka ʻoihana nuklea a i ʻole ka mokulele, e hoʻohana i ka polyimide a i ʻole PEEK ma kahi.

ʻO ka hoʻāʻo ʻana i ka maikaʻi o ka emulsion PTFE e pili ana i ʻeono mau hōʻailona nui: paʻa maʻiʻo (60±2% no T/FSI 067-2021), pH (9.0-11.0), puʻupuʻu nui ʻāpana (laser diffraction / DLS), viscosity (12-30 mPa · s ma 25 ° C), kūpaʻa (centrifugal, thermal a me ke ʻano. Hoʻopili kēia alakaʻi i nā ʻano hoʻokolohua maʻamau no kēlā me kēia ʻāpana.

No ka PTFE kiʻekiʻe-mehana lipine ma lalo o ka lōʻihi-manawa immersion, ka PTFE substrate noho chemically inert, akā, o ka adhesive papa ka wahi nāwaliwali. Hoʻonāwaliwali ka wai i ka PSA silicone; ʻO ka wai paʻakai ka hoʻokē ʻino. No nā kinikona koʻikoʻi, koi ʻia nā fluorosilicone a i ʻole perfluoropolyether adhesives – a i ʻole ka lipine PTFE adhesive-free. ʻO ka pau ʻana o ka ikaika Peel a hiki i 40% ma hope o 48 mau hola i ka wai.

Pono e noho i loko o nā palena wela o ka PTFE i hoʻohana ʻia i nā noi pili meaʻai: ≤260°C no ka hoʻohana mau ʻana, ≤300°C no nā piko pōkole (mau minuke), ʻaʻole ma luna o 327°C (decomposition). ʻAʻole ʻōlelo nā kānāwai FDA a me EU i ka palena manawa āpau - pili ka lōʻihi o ka launa pū ʻana i ka mahana a pono e hōʻoia ʻia e nā hoʻokolohua migration e hoʻohālikelike ana i nā kūlana maoli.

Hoʻohana ʻia ka lole kiʻekiʻe PTFE a me ka lole silikoni i ka lole fiberglass ma ke ʻano he kumu akā ʻokoʻa i nā mea uhi (PTFE resin vs silicone rubber). Ua ʻoi aku ka maikaʻi o ka PTFE i ka lāʻau ʻole, ka pale ʻana i ka ʻaʻahu, a me ke kūpaʻa kemika a hiki i 260°C. Hāʻawi ka lole silikoni i ka maʻalahi, ka hoʻokaʻawale uila, a me ke kūpaʻa ahi (a hiki i 230 ° C). E koho ma muli o kāu mea nui.

ʻO ka lole wela kiʻekiʻe ʻo PTFE (PTFE membrane material) he koho maikaʻi loa no ka hoʻolālā tensile. ʻO nā pōmaikaʻi nui: 30+ makahiki ke ola i waho, hoʻomaʻemaʻe iā ia iho (holoi ka lepo i ka wai ua), hoʻouna māmā māmā (6-13%), helu ahi papa A, a me ka ikaika like me ke kila ma lalo o 1.5 kg/m². Hoʻohana ʻia i nā kahua pāʻani, nā mokulele, a me nā hale kiʻiʻoniʻoni a puni ka honua.

Pono ka lipine kiʻekiʻe o ka PTFE i ka mālama pono ʻana e mālama i kāna adhesion, maʻalahi, a me ka hoʻokuʻu ʻana i ka hana. ʻO nā koi koʻikoʻi e pili ana i ka mālama ʻana i ka mahana (10-30°C), ka haʻahaʻa ma lalo o 60%, ka pale ʻana i ka māmā, ka hoʻokaʻawale ʻana i nā kemika, ka waiho ʻana i ke kūpaʻa, a me ka ea. E hahai i ka hoʻokele waiwai FIFO a nānā mau.

ʻO ke koho ʻana i ka lipine wela kiʻekiʻe PTFE kūpono no kahi moena wela 3D paʻi e pono ai ka nānā ʻana i ʻehā mau hōʻailona nui: ke kūpaʻa wela (a hiki i 260°C+), ka substrate i hoʻoikaika ʻia i ka fiberglass (0.18mm