ʻO ka cellulose acetate kahi mea maʻalahi me ka nui o nā noi. I ka ʻoihana paka, ʻo ka cellulose acetate tow ka mea mua no nā kānana cigakeke ma muli o kāna hana kānana maikaʻi loa. Hoʻohana ʻia ia i ka ʻoihana kiʻiʻoniʻoni a me nā plastics no ka hana ʻana i nā kiʻiʻoniʻoni kiʻi, nā kiʻi ʻoniʻoni, a me nā lima mea hana. Eia kekahi, ke lawelawe nei ka cellulose acetate ma ke ʻano he kumu nui no nā membranes, me nā membrane filtration a me nā mea hoʻohuli osmosis, mahalo i kāna permeability maikaʻi a me ke koho. Me kona biodegradability a me ka adaptability, cellulose acetate hoʻomau i ka hana koʻikoʻi i ka hana kuʻuna a me nā noi kaiapuni hou.
ʻO ke kaʻina hoʻoheheʻe ʻana o ka Cellulose Acetate
1. Hoʻomākaukau ʻana i nā mea maka a me ka hoʻoheheʻe ʻana
Hoʻomaka ka hana mepulp lāʻaucellulose, i hoʻomaʻemaʻe ʻia e wehe i ka lignin, hemicellulose, a me nā mea haumia ʻē aʻe. Hoʻopili ʻia ka cellulose i hoʻomaʻemaʻe ʻia meacetic acid, acetic anhydride, amea hoʻopāpāe hana i ka cellulose acetate esters. Ma ka mālama ʻana i ka pae o ka hoʻololi ʻana, hiki ke loaʻa nā māka like ʻole e like me ka diacetate a i ʻole triacetate.
2. Hoʻomaʻemaʻe a me ka hoʻomākaukau ʻana i ka hopena milo
Ma hope o ka acetylation, hoʻopau ʻia ka hui ʻana o ka hopena, a wehe ʻia nā huahana. Holoi ʻia ka cellulose acetate, maloʻo, a hoʻoheheʻe ʻia i lokoacetone a i ʻole acetone–wai hui ʻiae hana i ka hoʻoheheʻe wili homogeneous. I kēia pae, hoʻokō ka hopenakānanae hoʻopau i nā mea i hoʻoheheʻe ʻole ʻia a me nā gels, e hōʻoia i ka paʻa a me ka paʻa.
3. Hana ʻana a me ka hoʻopau ʻana
Hoʻohana ʻia ka hopena wili me kaʻano milo maloʻo, kahi i hoʻokuʻu ʻia ma o nā spinnerets a paʻa i loko o nā filament i ka wā e hoʻoheheʻe ai ka mea hoʻoheheʻe. ʻOhi ʻia nā filament, ʻōniʻoniʻo, a hana ʻia i kāwele mau a i ʻole ke kaula. Hoʻohana ʻia nā lāʻau lapaʻau ma hope e like me ke kau ʻana, crimping, a i ʻole ka hoʻopau ʻana i mea e hoʻomaikaʻi ai i nā waiwai fiber, i kūpono ia no nā noi mapakanā kānana, textiles, a me ka pulupulu kūikawā.
Pepa kānana paʻa nui
SCY Series pepa kānana
ʻO kēia pepa kānana, me kāna hui ʻana o ka cellulose a me ka cationic resin, ʻoi aku ka maikaʻi no ka kānana ʻana i nā hopena cellulose acetate. Hāʻawi ia i ka ikaika mechanical kiʻekiʻe, ka porosity paʻa, a me ka wehe ʻana i nā mea haumia hilinaʻi. ʻO ka haʻahaʻa haʻahaʻa polyamide epoxy resin content (<1.5%) e hōʻoia i ka hoʻohālikelike a me ka palekana i ka hana cellulose acetate, e kōkua ana i ka wehe ʻana i nā ʻāpana maikaʻi, nā gels, a me nā haumia insoluble ʻoiai e mālama ana i ke kūpaʻa kemika a me ka hoʻokō ʻana i nā kūlana palekana meaʻai a me ka lāʻau lapaʻau.
Nā pono
Kiekie Filtration Efficiency- Hoʻopau maikaʻi i nā ʻāpana maikaʻi, nā gels, a me nā haumia insoluble mai cellulose acetate solutions.
Ikaika Mechanical Ikaika- ʻO ka ikaika pahū ≥200 kPa e hōʻoia i ka lōʻihi a me ka hana paʻa ma lalo o ke kaomi.
KūlikePorosity– Hāʻawi ka ʻae ʻana i ka ea i hoʻopaʻa ʻia (25–35 L/㎡·s) i nā kahe kahe hilinaʻi a me nā hopena kānana like ʻole.
Ka hopena
ʻO ka cellulose acetate kahi mea nui i hoʻohana ʻia i nā kānana, nā kiʻiʻoniʻoni, nā plastics, a me nā membranes, i waiwai ʻia no kāna hana a me ka biodegradability. I ka wā o ka hana ʻana, pono ka kānana pono e hōʻoia i ka maʻemaʻe a me ka paʻa.
Ka Pa NuiSCY moʻokānanapepahāʻawi i nā hopena koʻikoʻi meka pono kānana kiʻekiʻe, ka lōʻihi ikaika, a me ka porosity paʻa. Me ka haʻahaʻa resin haʻahaʻa no ka hoʻohālikelike maikaʻi loa, ʻo ia ke koho hilinaʻi no ka hoʻoili ʻana o cellulose acetate i ka meaʻai, lāʻau lapaʻau, a me nā ʻoihana kemika.
