Carboxymethyl Cellulose (Sodium Carboxymethyl Cellulose), i kapa ʻia ʻo CMC, he pūhui polymer o ka colloid active surface. He mea ʻala ʻole, ʻono ʻole, ʻona ʻole i ka wai-soluble cellulose derivative. ʻO ka mea hoʻopaʻa cellulose organik i loaʻa he ʻano cellulose ether, a hoʻohana mau ʻia kona paʻakai sodium, no laila ʻo 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 he polyelectrolyte synthetic, no laila hiki ke hoʻohana ʻia e like me ka dispersant a me ka stabilizer no ka lepo refractory a me nā castables, a ʻo ia hoʻi kahi mea hoʻopili kūlohelohe kiʻekiʻe. Loaʻa iā ia nā pono penei:
1. Hiki ke hoʻopili maikaʻi ʻia ka carboxymethyl cellulose ma luna o ka ʻili o nā ʻāpana, hoʻopili maikaʻi ʻia a hoʻopili ʻia i nā ʻāpana, i hiki ke hana ʻia nā blanks refractory 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 luna o ka'āpana'āpana, a hana e like me ka dispersant a me ka pale colloid, pēlā e hoʻomaikaʻi ai i ka nui a me ka ikaika o ka huahana a me ka ho'ēmiʻana i ka Inhomogeneity afterburning o hoʻonohonoho hoʻonohonoho;
3. Ke hoʻohana nei i ka carboxymethyl cellulose ma ke ʻano he binder, ʻaʻohe lehu ma hope o ka puhi ʻana, a he liʻiliʻi loa nā mea hoʻoheheʻe haʻahaʻa, ʻaʻole ia e hoʻopili i ka mahana lawelawe o ka huahana.
Nā hiʻohiʻona huahana:
1. ʻO ka CMC keʻokeʻo a melemele fibrous granular pauka, ʻono ʻole, ʻala ʻole, ʻona ʻole, hiki ke hoʻoheheʻe ʻia i loko o ka wai, a hana i kahi colloid viscous akaka, a ʻo ka hopena he kū ʻole a i ʻole ka alkaline iki. 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 nō naʻe, ma muli o ka loli wikiwiki o ka mahana, e loli ka acidity a me ka alkalinity o ka hopena. Ma lalo o ka mana o nā kukui ultraviolet a me nā microorganisms, e hoʻoulu ʻia ai ka hydrolysis a i ʻole ka oxidation, e emi iho 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, a me nā pūhui mercury organik.
2. Ua like ka CMC me nā electrolytes polymer ʻē aʻe. I ka wā e hoʻoheheʻe ai, e pehu mua ia, a pili nā ʻāpana i kekahi i kekahi e hana i kahi kiʻiʻoniʻoni a i ʻole hui viscose, i hiki ʻole ke hoʻopuehu ʻia, akā lohi ka hoʻoheheʻe ʻana. 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. Hoʻonui ka maʻamau o ka CMC i ka lewa 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 o ka lumi, ʻoi aku ka nui o ka equilibrium ma luna o 26%, a ʻoi aku ka maʻamau o ka huahana ma lalo o 10%. No laila, pono e hoʻolohe i ka hoʻopaʻa ʻana a me ka mālama ʻana i ka moisture-proof.
4. ʻO nā paʻakai metala kaumaha e like me ka zinc, ke keleawe, ke kēpau, ka aluminika, ke kālā, ka hao, ka tin, ka chromium, a me nā mea ʻē aʻe, hiki ke hoʻoulu i ka ua i loko o ka wai wai CMC, a hiki ke hoʻoheheʻe hou ʻia ka ua i ka sodium hydroxide a i ʻole ammonium hydroxide solution. koe wale no ka acetate kepau kumu.
5. ʻO nā meaʻawaʻawaʻawaʻawa a iʻole nā meaʻawaʻawaʻole e hoʻoulu i ka ua i ka hopena o kēia huahana. He ʻokoʻa ke ʻano o ka ua ma muli o ke ʻano a me ka neʻe ʻana o ka waikawa. ʻO ka maʻamau, hiki mai ka ua ma lalo o ka pH 2.5, a hiki ke hoʻihoʻi hou ʻia ma hope o ka neutralization ma ka hoʻohui ʻana i ka alkali.
6. ʻAʻole i loaʻa i nā paʻakai e like me ka calcium, magnesium a me ka paʻakai paʻakai ka hopena o ka ua i ka hopena CMC, akā pili 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. Hoʻokomo ʻia ke kiʻi ʻoniʻoni e CMC i loko o ka acetone, benzene, butyl acetate, carbon tetrachloride, castor oil, corn oil, ethanol, ether, dichloroethane, petroleum, methanol, methyl acetate, methyl ethyl ether i ka lumi wela Ketone, toluene, turpentine , xylene, ʻaila pīnī, a me nā mea ʻē aʻe ʻaʻole hiki ke loli i loko o 24 mau hola.
Ka manawa hoʻouna: Jan-05-2023