ʻO ka sodium carboxymethyl cellulose (CMC)ʻO ia kahi derivative carboxymethylated o ka cellulose, i ʻike ʻia hoʻi ʻo ka cellulose gum, a ʻo ia ka ionic cellulose gum koʻikoʻi loa. ʻO CMC ka mea maʻamau he hui polymer anionic i loaʻa ma ka hana ʻana i ka cellulose kūlohelohe me ka alkali caustic a me ka waikawa monochloroacetic. ʻO ke kaumaha molekala o ka hui mai nā ʻumi miliona a i kekahi mau miliona.
【Nā Waiwai】Pauka keʻokeʻo, ʻala ʻole, hoʻoheheʻe ʻia i ka wai e hana i kahi hopena mānoanoa kiʻekiʻe, ʻaʻole hoʻoheheʻe ʻia i ka ethanol a me nā mea hoʻoheheʻe ʻē aʻe.
【Noi】He mau hana ia o ka hoʻokuʻu ʻana a me ka emulsification, ka hui maikaʻi a me ke kūpaʻa paʻakai, a ua ʻike ʻia ʻo "monosodium glutamate ʻoihana", kahi i hoʻohana nui ʻia.
Hoʻomākaukau ʻana o CMC
Wahi a ke ʻano etherification like ʻole, hiki ke hoʻokaʻawale ʻia ka hana ʻoihana o CMC i ʻelua mau māhele: ke ʻano wai a me ke ʻano solvent. ʻO ke ʻano o ka hoʻohana ʻana i ka wai ma ke ʻano he medium reaction ua kapa ʻia ʻo ke ʻano wai, i hoʻohana ʻia e hana i ka medium alkaline a me ka CMC haʻahaʻa; ʻo ke ʻano o ka hoʻohana ʻana i ka solvent organik ma ke ʻano he medium reaction ua kapa ʻia ʻo ke ʻano solvent, i kūpono no ka hana ʻana o ka CMC waena a me ke kiʻekiʻe. Hoʻokō ʻia kēia mau hana ʻelua i loko o kahi kneader, nona ke kaʻina hana kneading a ʻo ia ke ʻano nui no ka hana ʻana i ka CMC i kēia manawa.
1
ke ʻano hana wai
ʻO ke ʻano hana wai-i lawe ʻia he kaʻina hana ʻoihana mua, ʻo ia ka hoʻopili ʻana i ka cellulose alkali me kahi mea etherifying ma ke ʻano o ka alkali manuahi a me ka wai. I ka wā o ke kaʻina hana alkaliization a me ka etherification, ʻaʻohe mea organik i loko o ka ʻōnaehana. He maʻalahi nā koi lako o ke ʻano hana wai-i lawe ʻia, me ka liʻiliʻi o ka hoʻopukapuka kālā a me ke kumukūʻai haʻahaʻa. ʻO ka hemahema, ʻo ia ka nele o ka nui o ka wai wai, a ʻo ka wela i hana ʻia e ka hopena e hoʻonui i ka mahana, kahi e hoʻolalelale ai i ka wikiwiki o nā hopena ʻaoʻao, e hopena ana i ka pono etherification haʻahaʻa a me ka maikaʻi ʻole o ka huahana. Hoʻohana ʻia kēia ʻano hana e hoʻomākaukau i nā huahana CMC waena a me nā haʻahaʻa, e like me nā detergents, nā mea hana nui lole, a pēlā aku.
2
ʻano hana hoʻoheheʻe
ʻIke ʻia hoʻi ke ʻano hana hoʻoheheʻe ʻo ia ke ʻano hana hoʻoheheʻe organik. ʻO kona hiʻohiʻona nui, ʻo ia ka hana ʻana o nā hopena alkalization a me ka etherification ma lalo o ke kūlana e hoʻohana ʻia ai ka mea hoʻoheheʻe organik ma ke ʻano he medium reaction (diluent). Wahi a ka nui o ka mea hoʻoheheʻe hopena, ua māhele ʻia i ke ʻano kneading a me ke ʻano slurry. Ua like ke ʻano hana hoʻoheheʻe me ke kaʻina hana o ke ʻano hana wai, a he ʻelua mau pae o ka alkalization a me ka etherification, akā ʻokoʻa ka medium reaction o kēia mau pae ʻelua. Hoʻopau ke ʻano hana hoʻoheheʻe i nā kaʻina hana i loko o ke ʻano hana wai, e like me ka hoʻomoʻa ʻana, ka ʻomi ʻana, ka pulverizing, ka ʻelemakule ʻana, a pēlā aku, a lawe ʻia ka alkalization a me ka etherification i loko o kahi kneader. ʻO ka hemahema, ʻo ia ka haʻahaʻa o ka hoʻokele ʻana i ka mahana, kiʻekiʻe ke koi o ka wahi a me ke kumukūʻai. ʻOiaʻiʻo, no ka hana ʻana i nā hoʻonohonoho lako like ʻole, pono e kāohi pono i ka mahana o ka ʻōnaehana, ka manawa hānai, a pēlā aku, i hiki ai ke hoʻomākaukau i nā huahana me ka maikaʻi a me ka hana maikaʻi loa. Hōʻike ʻia kāna pakuhi kahe hana ma ke Kiʻi 2.
3
Ke kūlana o ka hoʻomākaukau ʻana o ka SodiumʻO ke kelulose Carboxymethylmai nā huahana mahiʻai
Loaʻa i nā huahana huaʻai nā ʻano like ʻole a me ka maʻalahi o ka loaʻa ʻana, a hiki ke hoʻohana nui ʻia ma ke ʻano he mea maka no ka hoʻomākaukau ʻana o CMC. I kēia manawa, ʻo nā mea maka o ka hana ʻana o CMC he cellulose i hoʻomaʻemaʻe ʻia, me ka pulupulu pulupulu, ka cassava fiber, ka mauʻu maloʻo, ka ʻohe fiber, ka palaoa mauʻu maloʻo, a pēlā aku. Eia nō naʻe, me ka hoʻolaha mau ʻana o nā noi CMC ma nā ʻano āpau o ke ola, ma lalo o nā kumuwaiwai hana mea maka e kū nei, pehea e hoʻohana ai i nā kumu waiwai haʻahaʻa a ākea o nā mea maka no ka hoʻomākaukau ʻana o CMC e lilo maoli i mea nui.
Nānā
Hiki ke hoʻohana ʻia ka sodium carboxymethyl cellulose ma ke ʻano he emulsifier, flocculant, thickener, chelating agent, wai-retaining agent, adhesive, sizing agent, film-forming material, etc. Hoʻohana nui ʻia ia i nā mea uila, ʻili, plastics, paʻi, keramika, hoʻohana i kēlā me kēia lā Chemical a me nā ʻoihana ʻē aʻe, a ma muli o kāna hana maikaʻi loa a me ka laulā o nā hoʻohana, ke hoʻomohala mau nei ia i nā kahua noi hou. I kēia mau lā, ma lalo o ka hoʻolaha ākea ʻana o ke kumumanaʻo o ka hana kemika ʻōmaʻomaʻo, noiʻi haole maCMCʻO ka ʻenehana hoʻomākaukau e kālele ana i ka ʻimi ʻana i nā mea maka olaola makepono a maʻalahi hoʻi e loaʻa a me nā ʻano hana hou no ka hoʻomaʻemaʻe ʻana o CMC. Ma ke ʻano he ʻāina me nā kumuwaiwai mahiʻai nui, aia koʻu ʻāina i ka hoʻololi ʻana o ka cellulose. Ma ke ʻano o ka ʻenehana, loaʻa iā ia nā pono o nā mea maka, akā aia kekahi mau pilikia e like me ke kūlike ʻole i ke kaʻina hana hoʻomākaukau i hoʻokumu ʻia e nā kumu like ʻole o nā fibers cellulose biomass a me nā ʻokoʻa nui i nā ʻāpana. Aia nō nā hemahema i ka lawa ʻana o ka hoʻohana ʻana i nā mea biomass, no laila pono e hana ʻia nā hoʻokō hou aʻe ma kēia mau wahi i ka noiʻi nui.
Ka manawa hoʻouna: ʻApelila-25-2024