Hydroxypropyl cellulose (HPC) ke polymer e sebelisoang hangata liindastering tse fapaneng, ho kenyeletsoa meriana, litlolo le lijo.Joalo ka li-polymers tse ngata, botsitso ba eona ba mocheso le mocheso oa ho senyeha ho itšetlehile ka lintlha tse 'maloa tse kang boima ba limolek'hule, tekanyo ea ho fetola, boteng ba li-additives le maemo a ho sebetsa.Leha ho le joalo, ke tla u fa kakaretso ea lintlha tse susumetsang ho senyeha ha mocheso oa HPC, mocheso oa eona o tloaelehileng oa ho senyeha, le tse ling tsa lisebelisoa tsa eona.
1. Sebopeho sa Lik'hemik'hale sa HPC:
Hydroxypropyl cellulose ke motsoako oa selulose o fumanoang ka ho phekola cellulose ka propylene oxide.Phetoho ena ea lik'hemik'hale e fana ka ho qhibiliha le lintho tse ling tse lakatsehang ho selulose, ho etsa hore e be molemo lits'ebetsong tse fapaneng.
2. Lintlha tse Amang Ho Senyeha ha Mocheso:
a.Boima ba Molek'hule: HPC e phahameng ea boima ba limolek'hule e atisa ho ba le botsitso bo phahameng ba mocheso ka lebaka la matla a matla a intermolecular.
b.Degree of Substitution (DS): Tekanyo ea hydroxypropyl substitution e susumetsa botsitso ba mocheso oa HPC.DS e phahameng e ka lebisa ho thetherecheng e tlase ea ho senyeha ka lebaka la ho ba kotsing e eketsehileng ea ho phunyeha ha mocheso.
c.Ho ba teng ha Li-additives: Li-additives tse ling li ka ntlafatsa botsitso ba mocheso oa HPC ka ho sebetsa e le li-stabilizers kapa li-antioxidants, ha tse ling li ka potlakisa ho senyeha.
d.Maemo a Ts'ebetso: Maemo ao HPC e sebetsoang tlas'a ona, joalo ka mocheso, khatello, le ho pepesehela moea kapa libaka tse ling tse sebetsang, li ka ama botsitso ba eona ba mocheso.
3. Mokhoa oa ho Fokotsa Mocheso:
Ho senyeha ha mocheso oa HPC hangata ho kenyelletsa ho robeha ha litlamo tsa glycosidic mokokotlong oa cellulose le ho petsoha ha likhokahano tsa ether tse hlahisoang ke hydroxypropyl substitute.Ts'ebetso ena e ka fella ka hore ho be le lihlahisoa tse senyehang habonolo tse kang metsi, carbon dioxide, le li-hydrocarbon tse fapa-fapaneng.
4. Mofuta o Tloaelehileng oa ho Fokotsa Mocheso:
Mocheso oa ho senyeha ha HPC o ka fapana haholo ho itšetlehile ka lintlha tse boletsoeng ka holimo.Ka kakaretso, ho senyeha ha mocheso oa HPC ho qala ho pota 200 ° C 'me ho ka tsoela pele ho fihlela mocheso o pota-potileng 300-350 ° C.Leha ho le joalo, mofuta ona o ka fetoha ho latela litšoaneleho tse ikhethang tsa sampole ea HPC le maemo ao e pepeselitsoeng ho ona.
5. Likopo tsa HPC:
Hydroxypropyl cellulose e fumana ts'ebeliso liindastering tse fapaneng:
a.Meriana ea Meriana: E sebelisoa e le ntho e teteaneng, e kopanyang, ea pele ea filimi, le e laoloang-e lokolloang mefuteng ea meriana e kang matlapa, li-capsules le litokisetso tsa lihlooho.
b.Litlolo: HPC e sebelisoa ho litlolo le lihlahisoa tsa tlhokomelo ea motho e le ntho e matlafatsang, e tsitsitseng, le filimi ea pele lihlahisoa tse kang litlolo, litlolo le litlolo tsa tlhokomelo ea moriri.
c.Indasteri ea Lijo: Indastering ea lijo, HPC e sebetsa e le setei, se tsitsitseng, le emulsifier lihlahisoa tse kang li-sauces, sopho le lijo tse theolelang.
d.Likopo tsa Indasteri: HPC e boetse e sebelisoa lits'ebetsong tse fapaneng tsa indasteri joalo ka li-inks, li-coatings, le likhomaretsi ka lebaka la sebopeho sa eona sa ho etsa lifilimi le rheological.
mocheso oa ho senyeha ha mocheso oa hydroxypropyl cellulose o fapana ho itšetlehile ka lintlha tse kang boima ba molek'hule, tekanyo ea ho fetola, boteng ba li-additives, le maemo a ho sebetsa.Le hoja ho senyeha ha eona hangata ho qala ho pota 200 ° C, e ka tsoela pele ho fihlela mocheso oa 300-350 ° C.Ho utloisisa lintlha tse susumetsang botsitso ba eona ba mocheso ho bohlokoa bakeng sa ho ntlafatsa ts'ebetso ea eona lits'ebetsong tse fapaneng liindastering tse fapaneng.
Nako ea poso: Mar-26-2024