He mea hana maʻalahi ka cellulose acetate me nā ʻano hana like ʻole. I ka ʻoihana paka, ʻo ka cellulose acetate tow ka mea maka mua no nā kānana cigarette ma muli o kāna hana kānana maikaʻi loa. Hoʻohana ʻia hoʻi ia i ka ʻoihana kiʻiʻoniʻoni a me nā plastics no ka hana ʻana i nā kiʻiʻoniʻoni kiʻi, nā mōlina hiʻohiʻona, a me nā lima hana. Eia kekahi, lawelawe ka cellulose acetate ma ke ʻano he mea nui no nā membrane, me nā membrane kānana a me nā mea osmosis hoʻohuli, mahalo i kona permeability maikaʻi a me ke koho ʻana. Me kona biodegradability a me ka adaptability, ke hoʻomau nei ka cellulose acetate i kahi hana koʻikoʻi i ka hana kuʻuna a me nā noi kaiapuni hou.
Kaʻina Hana Kānana Cellulose Acetate
1. Hoʻomākaukau ʻana i nā mea maka a me ka Acetylation
Hoʻomaka ke kaʻina hana meʻōpala lāʻaukelulose, kahi i hoʻomaʻemaʻe ʻia e wehe i ka lignin, hemicellulose, a me nā mea haumia ʻē aʻe. A laila hoʻopili ʻia ka cellulose i hoʻomaʻemaʻe ʻia mewaikawa acetic, anhydride acetic, a me kahimea hoʻonuie hana i nā esters cellulose acetate. Ma ka kaohi ʻana i ke kekelē o ka pani ʻana, hiki ke loaʻa nā māka like ʻole e like me diacetate a i ʻole triacetate.
2. Hoʻomākaukau ʻana i ka hoʻomaʻemaʻe a me ka wili ʻana i ka hopena
Ma hope o ka acetylation, hoʻopau ʻia ka hui ʻana o ka hopena, a wehe ʻia nā huahana ʻē aʻe. Holoi ʻia ka cellulose acetate, hoʻomaloʻo ʻia, a hoʻoheheʻe ʻia i lokoʻo ka acetone a i ʻole nā hui acetone-waie hana i kahi hopena wili like. I kēia pae, ke hele nei ka hopenakānanae hoʻopau i nā ʻāpana a me nā gels i hoʻoheheʻe ʻole ʻia, e hōʻoiaʻiʻo ana i ke kūlike a me ke kūpaʻa.
3. Hoʻokumu ʻana a me ka hoʻopau ʻana i ka fiber
Hoʻoponopono ʻia ka hopena wili me ka hoʻohana ʻana i kaʻano wili maloʻo, kahi e hoʻopuka ʻia ai ma o nā spinnerets a hoʻopaʻa ʻia i loko o nā filaments i ka wā e mahu ai ka mea hoʻoheheʻe. Hōʻiliʻili ʻia nā filaments, kīkoʻo ʻia, a hana ʻia i loko o ke kaula hoʻomau a i ʻole ka hilo. Hoʻopili ʻia nā hana ma hope o ka mālama ʻana e like me ke kīkoʻo ʻana, ka crimping, a i ʻole ka hoʻopau ʻana e hoʻomaikaʻi i nā waiwai fiber, e kūpono ai no nā noi macigarettenā kānana, nā lole, a me nā olonā kūikawā.
Pepa Kānana Kānana Pā Nui
Pepa kānana moʻo SCY
He kūpono loa kēia pepa kānana, me kona ʻano cellulose a me ka cationic resin, no ke 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 o ka polyamide epoxy resin content (<1.5%) e hōʻoiaʻiʻo ana i ka hoʻohālikelike a me ka palekana i ka hana ʻana o ka cellulose acetate, e kōkua ana i ka wehe ʻana i nā ʻāpana liʻiliʻi, nā gels, a me nā mea haumia hiki ʻole ke hoʻoheheʻe ʻia me ka mālama ʻana i ke kūpaʻa kemika a me ka hoʻokō ʻana me nā kūlana palekana meaʻai a me nā lāʻau lapaʻau.
Nā Pōmaikaʻi
Ka Hana Kānana Kiʻekiʻe– Hoʻopau pono i nā ʻāpana liʻiliʻi, nā gels, a me nā mea haumia hiki ʻole ke hoʻoheheʻe ʻia mai nā hopena cellulose acetate.
Ikaika Mekanika Ikaika– ʻO ka ikaika pahū ≥200 kPa e hōʻoiaʻiʻo i ka lōʻihi a me ka hana paʻa ma lalo o ke kaomi.
KūlikeKa porosity– Hāʻawi ka permeability ea i kāohi ʻia (25–35 L/㎡·s) i nā kahe hilinaʻi a me nā hopena kānana like.
Hopena
ʻO ka cellulose acetate kahi mea nui i hoʻohana ʻia i nā kānana, nā kiʻiʻoniʻoni, nā plastics, a me nā membrane, i mahalo ʻia no kāna hana a me ka biodegradability. I ka wā o ka hana ʻana, he mea nui ka kānana pono e hōʻoia i ka maʻemaʻe a me ke kūlike.
ʻO ka Pā NuiMoʻo SCYkānanapepahāʻawi i nā hopena maikaʻi loa meka hana kānana kiʻekiʻe, ka lōʻihi ikaika, a me ka porosity paʻaMe ka haʻahaʻa o ka resin no ka hoʻohālikelike maikaʻi loa, ʻo ia ke koho hilinaʻi no ka hana ʻana i ka cellulose acetate i ka meaʻai, nā lāʻau lapaʻau, a me nā ʻoihana kemika.
