ʻO ka helu kuhikuhi mānoanoa ohydroxypropyl methylcellulosehe ʻōkuhi koʻikoʻi loa ia. ʻAʻole hōʻike ka viscosity i ka maʻemaʻe. Aia ka viscosity o ka cellulose HPMC i ke kaʻina hana. Pono nā ʻano hoʻohana like ʻole e koho i ka cellulose HPMC me nā viscosities like ʻole, ʻaʻole ʻo ke kiʻekiʻe o ka viscosity o ka cellulose HPMC, ʻoi aku ka maikaʻi! ʻO ka mea kūpono, ʻo ia ka mea kūpono √
Ka Mana ʻAna o ka Mānoanoa
1. ʻAʻole hiki i ka hydroxypropyl methylcellulose kiʻekiʻe ke hana i ka cellulose kiʻekiʻe loa ma o ka hoʻomaʻemaʻe wale ʻana a me ke pani ʻana me ka naikokene. Ma keʻano laulā, ʻaʻole hiki ke kāohi ʻia ka hana ʻana o ka cellulose kiʻekiʻe ma Kina. Eia nō naʻe, inā hiki ke hoʻokomo ʻia kahi mea ana oxygen trace i loko o ka ipu hao, hiki ke kāohi ʻia ka hana ʻana o ka viscosity ma ke ʻano hana.
Ka hoʻohana ʻana i nā mea hoʻohui
2. Eia kekahi, ke noʻonoʻo nei i ka wikiwiki o ka hoʻololi ʻana o ka naikokene, a i ka manawa like, he mea maʻalahi loa ka hana ʻana i nā huahana viscosity kiʻekiʻe me ka nānā ʻole i ke ea o ka ʻōnaehana. ʻOiaʻiʻo, he mea koʻikoʻi nō hoʻi ke kiʻekiʻe o ka polymerization o ka pulupulu i hoʻomaʻemaʻe ʻia. Inā ʻaʻole ia e hana, e hana ia ma o ka hui hydrophobic. Aia nā mea pili kūloko ma kēia ʻano. ʻO ke ʻano o ka mea pili i koho ʻia he mana nui ia i ka hana o ka huahana hope loa.
Ka nui o ka hydroxypropyl
3. ʻO ke koena o ka oxygen i loko o ka reactor e alakaʻi ai i ka hōʻino ʻana o ka cellulose a me ka emi ʻana o ke kaumaha molekala, akā ua kaupalena ʻia ke koena o ka oxygen. ʻAʻole paʻakikī ke hana i ka viscosity kiʻekiʻe inā e hoʻopili hou ʻia nā molekala i haki. Eia nō naʻe, pili pono ka nui o ka saturation wai i ka nui o ka hydroxypropyl. Makemake wale kekahi mau hale hana e hoʻemi i ke kumukūʻai a me ke kumukūʻai, a ʻaʻole makemake e hoʻonui i ka nui o ka hydroxypropyl, no laila ʻaʻole hiki i ka maikaʻi ke hiki i ka pae o nā huahana haole like.
nā kumu ʻē aʻe
4. He pilina maikaʻi loa ka nui o ka paʻa ʻana o ka wai o ka huahana me ka hydroxypropyl, akā no ke kaʻina hana holoʻokoʻa, hoʻoholo pū ia i kona nui o ka paʻa ʻana o ka wai, ka hopena o ka alkaliization, ka lakio o ka methyl chloride a me ka propylene oxide, a me ka nui o ka alkali. A ʻo ka lakio o ka wai i ka pulupulu i hoʻomaʻemaʻe ʻia e hoʻoholo ai i ka hana o ka huahana.
Ka manawa hoʻouna: ʻOkakopa-19-2022