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 viscosities like ʻole, 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 i 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 o ka oxygen, ʻoiai ka lōʻihi o ka hoʻopili hou ʻana o 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.
nā kumu ʻē aʻe
4. He pilina nui ko ka wai paʻa o ka huahana me ka hydroxypropyl, akā, hoʻoholo pū i kona kahe paʻa 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