ʻO ka HPMC he pulupulu cellulose maʻemaʻe loa e like me ka mea maka, ma lalo o nā kūlana alkaline e ka etherification kūikawā a me ka hoʻomākaukau.
Loaʻa i ka HPMC ka mana mānoanoa, ka paʻakai paʻakai, ka lepo lehu haʻahaʻa, ka paʻa o ka pH, ka mālama ʻana i ka wai, ke kūpaʻa dimensional, ka hana kiʻiʻoniʻoni maikaʻi loa, a me ka nui o ke kūpaʻa enzyme, ka hoʻopuehu a me ka hoʻopili.
HPMC, Hydroxypropyl Methylcellulose 'ano o ka non-ionic cellulose etera, he pauda o ke keʻokeʻo i keʻokeʻo waihoʻoluʻu, e hana e like me ka mānoanoa, binder, film-mua, surfactant, pale colloid, lubricant, emulsifier a me ka hoʻokuʻu a me ka wai hoʻopaʻa kōkua. Eia kekahi, aia nā ʻano cellulose ethers e hōʻike i nā waiwai o ka gelation thermal, metabolic inertness, enzyme resistance, haʻahaʻa haʻahaʻa a me ka ʻono, a me ka paʻa PH.
Ma muli o ka nui o nā waiwai, hoʻohana pinepine ʻia ka HPMC e hoʻololi i nā mea hoʻohui ʻē aʻe me ka haʻahaʻa haʻahaʻa, e hana ana i ka HPMC i mea hoʻohui maikaʻi loa a maikaʻi hoʻi i nā wahi o nā adhesives, kūkulu hale, nā meaʻai, nā huahana hale, nā lāʻau lapaʻau a me nā mea ʻē aʻe.
| Inoa mea kūʻai | HPMC | ||
| maʻiʻo o ka methoxy | 28.0-30.0 27.0-30.0 19.0-24.0 | ||
| maʻiʻo o ka hydroxypropyl | 7.0-12.0 4.0-7.5 4.0-12.0 | ||
| ka mahana o ka gelation | 58-64 62-68 70-90 | ||
| mākū | ≤5% | ||
| Lehu | ≤1% | ||
| Waiwai PH | 4-8 | ||
| Nani | ʻO ka pauka whie | ||
| Hoʻoikaika kino | 80-100 papa inoa | ||
| ʻO ka viscosity | 300-200,000 Hiki ke hoʻololi ʻia | ||
| Hoʻonui ʻia ka HPMC me ka hoʻemi ʻana i ka methoxy content, ua hōʻole pū ka hoʻoheheʻe ʻana o ka wai gel point a me ka hana ma luna. Pili i ke kūlana o nā mea kūʻai aku | |||
Ka manawa hoʻouna: Mar-15-2021