1. hygroscopicity
Loaʻa i ka Carboxymethylcellulose sodium CMC ka lawe ʻana i ka wai e like me nā glues hoʻoheheʻe wai.Hoʻonui ʻia kona koena haʻahaʻa me ka piʻi ʻana o ka haʻahaʻa a emi iho me ka piʻi ʻana o ka mahana.ʻO ke kiʻekiʻe o ka DS, ʻoi aku ka nui o ka haʻahaʻa o ka ea, a me ka huahana ʻO ka ikaika o ka hoʻoheheʻe wai.Inā wehe ʻia ka ʻeke a waiho ʻia i loko o ka ea me kahi haʻahaʻa haʻahaʻa kiʻekiʻe no kekahi manawa, hiki i kona ʻano wai ke hiki i 20%.Ke 15% ka nui o ka wai, ʻaʻole e loli ke ʻano o ka pauka o ka huahana.Ke piʻi ka wai i ka 20%, e hōʻiliʻili kekahi mau ʻāpana a pili kekahi i kekahi, e hōʻemi ana i ka wai o ka pauka.E hoʻonui ka CMC i ke kaumaha ma hope o ka lawe ʻana i ka wai, no laila pono e hoʻokomo ʻia kekahi mau huahana i hoʻopaʻa ʻole ʻia i loko o nā pahu hau a mālama ʻia paha ma kahi maloʻo.
2. Hoʻoheheʻe ʻia ʻo Carboxymethyl Cellulose Sodium CMC
ʻO Carboxymethylcellulose sodium CMC, e like me nā polymers hiki ke hoʻoheheʻe ʻia i ka wai, e hōʻike ana i ka pehu ma mua o ka hemo ʻana.I ka nui nui o ka carboxymethylcellulose sodium CMC solution pono e hoomakaukau, ina kela me keia mea i uniformly pehu, a laila Product dissolves koke.Inā hoʻolei koke ʻia ka hāpana i loko o ka wai a pili i kahi poloka, e hana ʻia kahi "maka iʻa".ʻO kēia ka wehewehe ʻana i ke ʻano o ka hoʻoheheʻe koke ʻana i ka CMC: hoʻokomo mālie i ka CMC i loko o ka wai ma lalo o ka hoʻoulu ʻana;Hoʻopuehu mua ʻia ka CMC me kahi mea hoʻoheheʻe wai (e like me ka ethanol, glycerin), a laila hoʻohui mālie i ka wai ma lalo o ka hoʻoulu ʻana;Inā pono e hoʻohui ʻia nā mea hoʻohui pauda ʻē aʻe i ka hopena, e hui mua i nā mea hoʻohui a me ka pauka CMC, a laila hoʻohui i ka wai e hoʻoheheʻe;no ka ʻoluʻolu o nā mea hoʻohana, hoʻokuʻu ʻia nā huahana instant granule a me ka pauka.
3. Rheology o Sodium Carboxymethyl Cellulose CMC Solution
ʻO ka sodium carboxymethyl cellulose CMC solution he wai non-Newtonian, e hōʻike ana i ka viscosity haʻahaʻa i ka wikiwiki kiʻekiʻe, ʻo ia hoʻi, no ka mea, pili ka waiwai viscosity o ka sodium carboxymethyl cellulose CMC i nā kūlana ana, no laila ua hoʻohana ʻia ka "viscosity akaka" e wehewehe i kāna. ʻano ʻano.
Hōʻike ʻia ma ke kiʻikuhi rheological curve: ʻO ke ʻano o nā wai non-Newtonian ʻo ia ka pilina ma waena o ka shear rate (rotational speed on the viscometer) a me ka shear force (torque of the viscometer) ʻaʻole ia he pilina laina, akā he kaʻe.
ʻO Carboxymethyl cellulose sodium CMC solution he wai pseudoplastic.Ke ana ʻana i ka viscosity, ʻoi aku ka wikiwiki o ka holo ʻana, ʻoi aku ka liʻiliʻi o ka viscosity i ana ʻia, ʻo ia ka mea i kapa ʻia ka hopena shear thinning.
4. Carboxymethyl Cellulose Sodium CMC Viscosity
1) Viscosity a me ka awelika degere o ka polymerization
ʻO ka viscosity o ka sodium carboxymethylcellulose CMC solution e hilinaʻi nui ʻia i ka degere awelika o ka polymerization o nā kaulahao cellulose e hoʻokumu ana i ke ʻano.Aia kahi pilina laina ma waena o ka viscosity a me ka degere awelika o ka polymerization.
2) ʻO ka viscosity a me ka noʻonoʻo
ʻO ka pilina ma waena o ka viscosity a me ka neʻe ʻana o kekahi mau ʻano sodium carboxymethylcellulose CMC.ʻO ka viscosity a me ka noʻonoʻo ʻana he logarithmic.Hiki i ka sodium carboxymethyl cellulose CMC solution ke hana i ka viscosity kiʻekiʻe i ka haʻahaʻa haʻahaʻa, hiki i kēia ʻano ke hoʻohana ʻia ʻo CMC ma ke ʻano he mānoanoa maikaʻi loa i ka noi.
3) Viscosity a me ka mahana
Ke emi nei ka viscosity o ka carboxymethylcellulose sodium CMC wai me ka hoʻonui ʻana i ka mahana, me ka nānā ʻole i ke ʻano a me ka noʻonoʻo ʻana, ʻo ke ʻano o ka hopena viscosity a me ka pāhana pili pili i ke ʻano like.
4) Viscosity a me ka pH
Ke 7-9 ka pH, hiki i ka viscosity o ka hopena CMC i kona kiʻekiʻe a paʻa loa.ʻAʻole e loli nui ka viscosity o ka sodium carboxymethylpyramid i loko o ka pae pH o 5-10.ʻOi aku ka wikiwiki o ka CMC i nā kūlana alkaline ma mua o nā kūlana kūʻokoʻa.I ka pH> 10, e hoʻohaʻahaʻa ʻo CMC a hoʻemi i ka viscosity.Ke hoʻohui ʻia kahi ʻakika i ka hoʻonā CMC, hoʻemi ʻia ke kūpaʻa o ka hāʻina no ka mea ua pani ka H+ i ka Na+ ma ke kaulahao mole.I loko o ka waiʻakika ikaika (pH=3.0-4.0) hoʻomaka ka semi-sol e hana, e hoʻemi ana i ka viscosity o ka hopena.I ka pH <3.0, hoʻomaka ka CMC i ka hiki ʻole ke hoʻoheheʻe ʻia i ka wai a hana i ka waikawa CMC.
ʻOi aku ka ikaika o ka CMC me ke kūlana kiʻekiʻe o ka hoʻololi ʻana i ka waika a me ke kūpaʻa alkali ma mua o CMC me ka DS haʻahaʻa;ʻOi aku ka ikaika o ka CMC me ka viscosity haʻahaʻa i ka waikawa a me ka pale alkali ma mua o CMC me ka viscosity kiʻekiʻe.
Ka manawa hoʻouna: Jan-28-2023