ʻO ka viscosity index o ka hydroxypropyl methylcellulose he mea nui loa. ʻAʻole hōʻike ka viscosity i ka maʻemaʻe. ʻO ka viscosity o cellulose HPMC pili i ke kaʻina hana. Pono nā wahi hoʻohana like ʻole e koho i ka HPMC cellulose me nā viscosity ʻokoʻa, ʻaʻole ʻoi aku ka kiʻekiʻe o ka viscosity o cellulose HPMC, ʻoi aku ka maikaʻi! ʻO ka mea kūpono ka pololei.
Hoʻoponopono Viscosity
1. I ka hana ʻana o ka hydroxypropyl methylcellulose kiʻekiʻe-viscosity, ʻaʻole hiki ke hoʻohua i ka cellulose kiʻekiʻe loa ka vacuuming a me ka hoʻololi nitrogen. 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 mika oxygen trace i loko o ka ipu hao, hiki ke hoʻohana ʻia ka hana ʻana o kona viscosity.
Hoʻohana ʻoihana hui
2. Eia kekahi, e noʻonoʻo ana i ka wikiwiki o ka hoʻololi ʻana o ka nitrogen, ua maʻalahi ka hana ʻana i nā huahana kiʻekiʻe-viscosity ʻoiai ke ʻano o ka airtight o ka ʻōnaehana. ʻOiaʻiʻo, koʻikoʻi nō hoʻi ka pae o ka polymerization o ka pulupulu hoʻomaʻemaʻe. Inā ʻaʻole pono kēlā, 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.
Hydroxypropyl maʻiʻo
3. ʻO ke koena oxygen i loko o ka reactor ke alakaʻi i ka degradation o cellulose a me ke kaumaha molekala haʻahaʻa. Eia naʻe, inā i kaupalena ʻia ke koena oxygen, ʻoiai ka lōʻihi o ka hoʻopili hou ʻana o nā molekala i haki, 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.
nā kumu ʻē aʻe
4. He pilina nui ka wai paʻa o ka huahana me ka hydroxypropyl, akā e hoʻoholo ana i ka nui o ka mālama ʻana i ka wai, ka hopena alkalization, ka ratio o ka methyl chloride a me ka propylene oxide, a me ka neʻe alkali no ke kaʻina hana holoʻokoʻa. ʻO ka ratio o ka wai a me ka pulupulu hoʻomaʻemaʻe e hoʻoholo i ka hana o ka huahana.
Ka manawa hoʻouna: Apr-03-2023