ʻO ka māmā māmā o ka hydroxypropyl methylcellulose e hoʻopili nui ʻia e nā mea aʻe:
1. ʻO ka maikaʻi o nā mea maka.
ʻO ka lua, ka hopena o ka alkaliization.
3. Lakiō kaʻina hana
4. Ka mahele o ka solvent
5. Ka hopena o ka neutralization
He ʻeleʻele kekahi mau huahana e like me ka waiū ma hope o ka hoʻoheheʻe ʻia ʻana, he keʻokeʻo waiu kekahi, he melemele kekahi, a he moakaka a ʻākala kekahi… No ka hoʻoponopono ʻana i ka pilikia, e hoʻoponopono mai nā ʻōlelo aʻe.I kekahi manawa hiki i ka acetic acid ke hoʻopilikia koʻikoʻi i ka transmittance māmā.ʻOi aku ka maikaʻi o ka hoʻohana ʻana i ka acetic acid ma hope o ka dilution.ʻO ka hopena nui loa, ʻo ia ka hoʻoulu ʻia ʻana o ka hopena a paʻa paha ka ratio o ka ʻōnaehana (ua loaʻa i kekahi mau mea i ka makū a ʻaʻole paʻa ka ʻike, e like me ka solvent i hoʻohana ʻia no ka hana hou ʻana).ʻO kaʻoiaʻiʻo, nui nā kumu e pili ana.Inā paʻa nā mea hana a hoʻomaʻamaʻa maikaʻi ʻia nā mea hana, pono e paʻa loa ka hana.ʻAʻole e ʻoi aku ka māmā o ka hoʻouna ʻana i ka ± 2%, a pono e hoʻomalu maikaʻi ʻia ka hoʻololi ʻana o nā hui pani.Ma kahi o ka like ʻole, ʻoi aku ka maikaʻi o ka transmittance māmā.
Nā mea e pili ana i ka Viscosity o Hydroxypropyl Methyl Cellulose
ʻAʻole hiki i ka hydroxypropyl methylcellulose kiʻekiʻe kiʻekiʻe ke hoʻohua i ka cellulose kiʻekiʻe loa ma ka hoʻoheheʻe ʻana a me ka hoʻololi ʻana o ka nitrogen i ka hana.ʻO ka maʻamau, ʻaʻole hiki ke kāohi ʻia ka hana ʻana o ka cellulose kiʻekiʻe-viscosity ma Kina.Eia nō naʻe, inā hiki ke hoʻokomo ʻia kahi mea ana o ka oxygen i loko o ka ipu hao, hiki ke hoʻomalu ʻia ka hana ʻana o kona viscosity.
hana ʻia.Eia kekahi, e noʻonoʻo ana i ka wikiwiki o ka nitrogen, maʻalahi ka hana ʻana i nā huahana kiʻekiʻe-viscosity ʻoiai ke ʻano o ka airtight o ka ʻōnaehana.ʻOiaʻiʻo, koʻikoʻi ka degere o ka polymerization o ka pulupulu hoʻomaʻemaʻe.Inā ʻaʻole ia e hana, a laila e hana me ka hui hydrophobic.Aia nā luna hui ma kēia wahi ma Kina.ʻO ke ʻano o ka ʻoihana hui e koho ai he mana nui i ka hana o ka huahana hope.ʻO ke koena o ka oxygen i loko o ka reactor ke kumu o ka degradation o cellulose a me ka emi ʻana o ke kaumaha molekala, akā ua kaupalena ʻia ke koena oxygen, ʻoiai ke hoʻopili hou ʻia nā molekala haʻihaʻi, ʻaʻole paʻakikī ke hana i ka viscosity kiʻekiʻe.Eia nō naʻe, pili ka nui o ka saturation me ka ʻike o ka hydroxypropyl.Makemake wale kekahi mau hale hana e hoʻemi i ke kumukūʻai a me ke kumukūʻai, akā makemake ʻole e hoʻonui i ka ʻike o ka hydroxypropyl, no laila ʻaʻole hiki i ka maikaʻi ke hiki i ke kiʻekiʻe o nā huahana like ʻole.He pilina nui ka wai paʻa o ka huahana me ka hydroxypropyl, akā no ke kaʻina hana holoʻokoʻa, hoʻoholo ia i ka nui o ka mālama ʻana i ka wai, ka hopena alkalization, ka ratio o ka methyl chloride a me ka propylene oxide, ka pae alkali a me ka paʻa wai.Hoʻoholo ka lakio i ka pulupulu hoʻomaʻemaʻe i ka hana o ka huahana.
Ka manawa hoʻouna: Mei-23-2023