ʻO Carboxymethyl cellulose (Sodium Carboxymethyl Cellulose) i kapa ʻia ʻo CMC, he ʻano hui colloid polymer o ka ʻili, he ʻano odorless, tasteless, non-toxic water-soluble cellulose derivative, i hana ʻia me ka pulupulu absorbent ma o ka mālama kino kino. ʻO ka mea hoʻopaʻa cellulose organik i loaʻa he ʻano cellulose ether, a hoʻohana mau ʻia kona paʻakai sodium, no laila e kapa ʻia kona inoa piha ʻo sodium carboxymethyl cellulose, ʻo ia hoʻi CMC-Na.
E like me ka methyl cellulose, hiki ke hoʻohana ʻia ka carboxymethyl cellulose ma ke ʻano he surfactant no nā mea refractory a ma ke ʻano he mea hoʻopaʻa pōkole no nā mea refractory.
ʻO ka sodium carboxymethyl cellulose kahi polyelectrolyte synthetic, no laila hiki ke hoʻohana ʻia ma ke ʻano he dispersant a me ka stabilizer no nā slurries refractory a me nā castables, a he mea hoʻopaʻa hoʻopōmaikaʻi kiʻekiʻe hoʻi ia. Loaʻa iā ia nā pono penei:
1. Hiki ke hoʻopili maikaʻi ʻia ʻo Carboxymethyl cellulose ma luna o ka ʻili o nā ʻāpana, infiltrating a hoʻohui pono i nā ʻāpana, i hiki ke loaʻa i ke kino refractory ikaika kiʻekiʻe;
2. No ka carboxymethyl cellulose he anionic polymer electrolyte, hiki iā ia ke ho'ēmi i ka pilina ma waena o nā'āpana ma hope o ka hoʻopiliʻiaʻana ma kaʻili o nā'āpana, a pāʻani i keʻano o ka dispersant a me ka colloid pale, no laila e hoʻonui ai i ka nui a me ka ikaika o ka huahana a me ka ho'ēmiʻana. ma hope o ke ahi. Inhomogeneity o ka hoʻolālā hui;
3. Ke hoʻohana nei i ka carboxymethyl cellulose ma ke ʻano he mea hoʻopaʻa, ʻaʻohe lehu ma hope o ka puhi ʻana, a he liʻiliʻi nā mea hoʻoheheʻe haʻahaʻa, ʻaʻole ia e pili i ka mahana hoʻohana o ka huahana.
Nā hiʻohiʻona huahana
1. ʻO ka CMC he keʻokeʻo a i ʻole melemele liʻiliʻi fibrous pauka, ʻono ʻole, ʻala ʻole, ʻona ʻole, hiki ke hoʻoheheʻe ʻia i loko o ka wai, a hana i kahi colloid viscous akaka, ʻaʻohe ʻano a i ʻole ka alkaline ka hopena. Hiki ke mālama ʻia no ka manawa lōʻihi me ka ʻole o ka pōʻino, a paʻa nō hoʻi ma lalo o ka haʻahaʻa haʻahaʻa a me ka lā. Eia naʻe, ma muli o ka hoʻololi wikiwiki ʻana o ka mahana, hoʻololi ka acidity a me ka alkalinity o ka hopena. Ma lalo o ka mana o ka radiation ultraviolet a me nā microorganisms, e hoʻoulu ʻia ai ka hydrolysis a i ʻole ka oxidation, e emi ana ka viscosity o ka hopena, a e hoʻopōʻino ʻia ka hopena. Inā pono e mālama ʻia ka hopena no ka manawa lōʻihi, hiki ke koho ʻia nā preservatives kūpono e like me formaldehyde, phenol, benzoic acid, organic mercury compounds, etc.
2. Ua like ka CMC me nā electrolytes polymer ʻē aʻe. Ke hoʻoheheʻe ʻia, hoʻopuka mua ia i kahi mea pehu, a pili nā ʻāpana i kekahi i kekahi e hana i kahi kiʻiʻoniʻoni a i ʻole viscose, ʻaʻole hiki ke hoʻopuehu, akā e hoʻoheheʻe mālie. No laila, i ka hoʻomākaukau ʻana i kāna hoʻonā wai, inā hiki ke hoʻomaʻemaʻe mua ʻia nā ʻāpana, hiki ke hoʻonui nui ʻia ka nui o ka dissolution.
3. He hygroscopic ka CMC. I ka lewa, piʻi ka awelika o ka wai o ka CMC me ka piʻi ʻana o ka mahana o ka ea a emi iho me ka piʻi ʻana o ka ea. Ke 80%-50% ka awelika o ka mahana wela o ka lumi, ʻoi aku ka nui o ka wai ma luna o 26%, a ʻoi aku ka nui o ka wai o ka huahana 10% a i ʻole. No laila, pono e hoʻolohe i ka hoʻopaʻa ʻana a me ka mālama ʻana i ka moisture-proof.
4. Zinc, keleawe, kēpau, aluminika, kālā, hao, tin, chromium a me nā paʻakai metala kaumaha ʻē aʻe hiki ke hoʻoheheʻe i ka wai wai CMC. Koe wale no ka acetate paʻakai paʻakai, hiki ke hoʻoheheʻe hou ʻia ka precipitate i loko o ka solution sodium hydroxide a i ʻole ammonium hydroxide solution. .
5. ʻO nā ʻakika organik a i ʻole nā mea ʻawaʻawa e hoʻomāhuahua i ka ua i ka hopena o kēia huahana. ʻOkoʻa ke ʻano o ka ua me ke ʻano a me ka neʻe ʻana o ka waikawa. ʻO ka maʻamau, hiki mai ka ua i ka pH ma lalo o 2.5, a hiki ke hoʻihoʻi hou ʻia ma hope o ka neʻe ʻana me ka alkali.
6. I loko o nā paʻakai e like me ka calcium, magnesium a me ka paʻakai papaʻaina, ʻaʻohe hopena o ka ua i ka hopena CMC, akā pili ia i ka emi ʻana o ka viscosity.
7. Ua kūpono ʻo CMC me nā glues hiki ke hoʻoheheʻe ʻia i ka wai, nā mea palupalu a me nā resins.
8. Nā kiʻiʻoniʻoni i hukiʻia mai CMC, i hoʻokomoʻia i loko o ka acetone, benzene, butyl acetate, carbon tetrachloride, castor oil, corn oil, ethanol, ether, dichloroethane, petroleum, methanol, methyl acetate, methyl ethyl acetate i ka lumi wela Ketone, toluene, turpentine, xylene, ʻaila pīkī, a me nā mea ʻē aʻe hiki ke hoʻololi ʻole ʻia i loko o 24 mau hola
Ka manawa hoʻouna: Nov-07-2022