He aha ka ʻokoʻa ma waena o ka hydroxypropyl methylcellulose a me ka carboxymethylcellulose

ʻO Carboxymethyl cellulose CMC, sodium carboxymethyl starch (CMS), ʻoi aku ka liʻiliʻi o ke kumukūʻai (mai ka hana o ka huahana ponoʻī, ʻo CMC kahi haʻahaʻa haʻahaʻa ma mua o Fuying HPMC), hoʻohana ʻia ka carboxymethyl cellulose no ka pauka putty haʻahaʻa no nā paia o loko. , ʻoi aku ka ʻino o ka paʻa ʻana o ka wai ma mua o ka hydroxypropyl methylcellulose, no laila ʻaʻole hiki ke hoʻohana ʻia i loko o ka putty wai a me ka hui ʻana o ka wela wela waho.

He nui ka poʻe e manaʻo nei he alkaline kēia mau cellulose, a he alkaline hoʻi ka pauka calcium a me ka lime calcium, a manaʻo lākou hiki ke hoʻohana ʻia i ka hui pū ʻana, akā ʻo ka carboxymethyl cellulose a me ka sodium carboxymethyl starch ʻaʻole nā ​​mea hoʻokahi, a ʻo ka chloroacetic acid i hoʻohana ʻia i kā lākou hana hana. He ʻakika ia, a ʻo ke koena o nā mea i loko o ke kaʻina hana o ka cellulose e hana me ka sima a me ka lime calcium pauka, no laila ʻaʻole hiki ke hoʻohui ʻia. Nui nā mea hana i pohō nui ma muli o kēia, no laila pono e uku ʻia. ʻO ka hoʻohanaʻana i ka carboxymethyl cellulose a me ka hydroxypropyl methyl cellulose heʻano like wale nō, akā, heʻokoʻa loa kā lākou mau hana, a he mamao loa nā hōʻailona loea o nā meaʻelua. ʻO nā mea waiwai nui o nā mea ʻelua he pulupulu hoʻomaʻemaʻe like, akā ʻokoʻa kā lākou mea kōkua, nā mea hana hana, a me ke kahe kaʻina. ʻOi aku ka paʻakikī o nā lako hana a me ka hana o ka hydroxypropyl methylcellulose. ʻAʻole nā ​​​​mea ʻelua i ka hana hana, a ʻokoʻa nā mea hoʻohana ʻē aʻe, no laila ʻokoʻa nā hoʻohana. ʻAʻole hiki ke pani ʻia, ʻaʻole hiki ke hoʻohui ʻia kekahi i kekahi e hoʻemi i nā kumukūʻai.

ʻO ka Hydroxypropyl methylcellulose (hpmc) he mau waiwai kemika paʻa, kūpaʻa ka maʻi, ka paʻa wai maikaʻi loa a me ka hopena mānoanoa, a ʻaʻole pili i nā loli pH. ʻO ka viscosity o 100,000 kūpono no ka pauka putty, a ʻo ka viscosity o 150,000 a 200,000 kūpono no ka pauka putty. I loko o ka mortar, hoʻonui nui ia i ka waiwai leveling a me ke kūkulu ʻana, a hiki ke hōʻemi i ka nui o ka sima.

ʻO ka hana ʻo ia ka manawa paʻa o ka mortar sima, a pono e mālama ʻia i ka wā paʻa, a pono e hoʻolako ʻia me ka wai e hoʻomaʻemaʻe. Ma muli o ka hopena paʻa wai o cellulose, ʻo ka wai e pono ai no ka hoʻopaʻa ʻana i ka mortar sima ua hōʻoia ʻia mai ka paʻa ʻana o ka wai o cellulose, no laila hiki ke hoʻokō ʻia ka hopena solidification me ka mālama ʻole.