ʻO ka kānana membrane PTFE he mea hoʻohālikelike maikaʻi loa, no laila e hoʻohana ʻia lākou no ka kānana ʻana o nā mea hoʻoheheʻe a me nā ʻakika, kahi e pale ʻole ai nā kānana ʻē aʻe.Ma muli o kā lākou mau hiʻohiʻona hydrophobic, pono lākou e hoʻomaʻemaʻe ʻia me ka ethanol a i ʻole ka methanol ma mua o ka kānana ʻana o ka media wai.
Hoʻolauna
ʻO nā kānana membrane a i ʻole "membranes" nā kiʻiʻoniʻoni plastik microporous me nā helu kikoʻī nui o ka pore.ʻIke ʻia hoʻi ʻo ka pale, sieve a i ʻole nā kānana microporous, mālama nā membrane i nā ʻāpana a i ʻole nā microorganism ʻoi aku ka nui ma mua o ko lākou nui pore ma muli o ka hopu ʻana i ka ʻili.Hiki ke mālama ʻia kekahi mau ʻāpana liʻiliʻi ma mua o ka nui o ka pore i ʻōlelo ʻia e nā mīkini ʻē aʻe. Hoʻopuka ʻia nā membrane PTFE e nā kaʻina hana ʻekolu.ʻO nā Esters Cellulose Mixed, Cellulose Acetate, a me Nylon, he mau membrane hoʻoheheʻe hoʻoheheʻe ʻia, kahi e hoʻokele ʻia ai ka hoʻohemo ʻana a i ʻole ka wehe ʻana o ka ʻōnaehana solvent paʻakikī e hana i ke ʻano porous.Hana ʻia ka PTFE hydrophilic a me ka hydrophobic e kahi kaʻina hana patent kahi i hoʻopaʻa ʻia nā membrane biaxially e hana i ke ʻano porous.
ʻO nā hiʻohiʻona o ka PTFE Membranes
- Ikaika: Mālama ʻia nā membrane PTFE no ka ʻāʻī ʻana (longitudinal) a me ka ikaika tensile (lateral).
- Maʻemaʻe kemika a me ke ola kino: Ma keʻano he papahana maikaʻi loa, hoʻohana waleʻia nā reagents maʻemaʻe kiʻekiʻe a me nā mea maka no ka hanaʻana i nā membrane PTFE. I ka wā i hoʻoleiʻia, mālamaʻia nā membrane i loko o ka lumi maʻemaʻe 1000 e hoʻemi i ka hoʻohaumia ambient.ʻOiai e koi ana kekahi mau membrane i kahi liʻiliʻi (0.1-3 paona %) o kahi mea hoʻoheheʻe wai, ʻo ka Cellulose acetate ka haʻahaʻa haʻahaʻa loa (0.1 paona %) a ʻo Nylon, he hydrophilic maoli, ʻaʻohe mea hoʻohui a i ʻole surfactants.
- ʻO nā membrane lahilahi me ka porosity kiʻekiʻe: ʻO nā membrane lahilahi like ʻole (maʻamau 150 µm) me ka porosity kiʻekiʻe (ma kahi o 80%) hāʻawi i ke kinoea kiʻekiʻe a me ke kahe wai ma kēlā me kēia wahi.Hāʻawi ka porosity kiʻekiʻe i kahi ākea kiʻekiʻe no ka adsorption a i ʻole ka hoʻopaʻa ʻana.
- Māmā: Hiki ke hoʻopaʻa ʻia nā membrane PTFE āpau e ka autoclaving.Hiki ke hoʻokō i nā mahana hana a hiki i ka 180 ° C ma muli o ka polymer membrane . Hōʻike nā membrane PTFE i ka liʻiliʻi liʻiliʻi ma nā mahana kiʻekiʻe.
Ke alakaʻi wikiwiki i ke koho ʻana i nā kānana membrane
- E hoʻoholo i ka wai a i ʻole ke kinoea e kānana ʻia.
- E nānā i nā membrane i kūpono i nā kemika.
- E hoʻoholo i ka nui o ka pore e pono ai e hoʻokō i nā hopena āu e makemake ai.
- E nānā i nā kikoʻī o ka membrane no nā kūlana kaʻina hana ʻē aʻe i kaupalena ʻia kāu koho ʻana i ka membrane (e laʻa me ka wela).
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Ka manawa kau: Apr-04-2020