1. Selelekela:
Hydroxypropyl Methylcellulose (HPMC) ke polymer e feto-fetohang e sebelisoang haholo indastering e fapaneng, ho kenyeletsoa meriana, kaho le lijo. E 'ngoe ea lits'ebetso tsa eona tsa bohlokoa ke ho fetola litšobotsi tsa rheological tsa li-suspension. Rheology, thuto ea phallo le phetoho ea thepa, e bohlokoa ho utloisiseng le ho laola boitšoaro ba li-suspension.
2. Phetoho ea Viscosity:
HPMC e tsebahala ka bokgoni ba yona ba ho fetola viscosity ya di-suspension. Jwalo ka polymer e phelang metsing, e monya metsi habonolo mme e bopa sebopeho se kang sa gel. Ha e eketswa ho suspension, dimolekhule tsa HPMC di a monya le ho kopana, e leng se eketsang viscosity ya sistimi. Bongata ba phetoho ya viscosity bo itshetlehile ka mabaka a kang mahloriso a HPMC, boima ba dimolekhule, le tekanyo ya ho nkela sebaka. Mahloriso a phahameng le boima ba dimolekhule tsa HPMC hangata di fella ka ntlafatso e kgolo ya viscosity.
3. Boitšoaro ba ho Fokotsa ho Beola:
Ntle le ho fetola viscosity, HPMC e ka susumetsa boitšoaro ba ho fokotsa ho kuta ha di-suspension. Ho fokotsa ho kuta ho bolela phokotso ya viscosity tlasa kgatello ya ho kuta e sebediswang, e atisang ho bonwa ditsamaisong tse ngata tsa ho emisa. Boteng ba HPMC bo fetola index ya boitshwaro ba phallo ya ho emisa, e leng se lebisang ho bokgoni bo ntlafetseng ba ho fokotsa ho kuta. Thepa ena e molemo haholo ditshebedisong moo ho hlokehang ho tshela kapa ho aba habonolo, jwalo ka dihlahisweng tsa meriana kapa dihlahiswa tsa dijo.
4. Ho tsitsa ha ho emisoa:
Karolo e 'ngoe ea bohlokoa ea rheology ke botsitso ba ho emisoa, e leng bokhoni ba likaroloana ho lula li qhalakane le ho hanela ho senyeha ha nako e ntse e ea. HPMC e bapala karolo ea bohlokoa ho ntlafatseng botsitso ba ho emisoa ka mekhoa e mengata. Ea pele, phello ea eona ea ho teteana e thusa ho thibela ho lula ha likaroloana ka ho eketsa viscosity ea mohato o tsoelang pele. Ea bobeli, HPMC e etsa mokoallo o sireletsang ho potoloha likaroloana, e fokotsa likamano tsa lipakeng tsa likaroloana le ho kopana ha tsona. Mokhoa ona oa ho tsitsisa steric o thusa ho boloka ho tšoana ha ho emisoa.
5. Tšusumetso ea Thepa ea HPMC:
Tšusumetso ea rheological ea HPMC ho li-suspension e susumetsoa ke litšobotsi tse 'maloa tsa bohlokoa tsa polymer. Boima ba limolek'hule bo ama boholo ba ho hokelloa ha ketane, ka lebaka leo, ntlafatso ea viscosity. Boima bo phahameng ba limolek'hule HPMC bo atisa ho fana ka viscosity e kholoanyane ho li-suspension. Tekanyo ea phetolo (DS), e bolelang palo ea lihlopha tsa hydroxypropyl le methoxy ka yuniti ea glucose, le eona e susumetsa boitšoaro ba rheological. Litekanyetso tse phahameng tsa DS li fella ka ho ba le metsi a mangata le ho thehoa ha gel e teteaneng, e leng se lebisang ho viscosity e eketsehileng.
6. Likopo tse sebetsang:
Thepa ea rheological ea li-suspension tse fetotsoeng ka HPMC e sebelisoa haholo indastering e fapaneng. Mefuteng ea meriana, HPMC e sebelisoa e le moemeli oa ho emisa ho netefatsa kabo e ts'oanang ea likaroloana tsa meriana le ho ntlafatsa botsitso. Lisebelisoang tsa kaho tse kang li-mortar tsa samente le li-grout, HPMC e ntlafatsa bokhoni ba ho sebetsa, ho khomarela le ho hanyetsa ho oa. Ka mokhoa o ts'oanang, lihlahisoa tsa lijo tse kang lisoso, li-dressing le lihlahisoa tsa lebese, HPMC e ntlafatsa sebopeho, botsitso le maikutlo a molomo.
Hydroxypropyl Methylcellulose (HPMC) ke polymer e sebetsang ka mesebetsi e mengata e susumetsang haholo litšobotsi tsa rheological tsa li-suspension. Bokhoni ba eona ba ho fetola viscosity, ho ntlafatsa boitšoaro ba ho fokotsa ho beola, le ho ntlafatsa botsitso ba ho emisoa bo e etsa hore e be tlatsetso ea bohlokoa liindastering tse fapaneng. Ka ho utloisisa mekhoa eo HPMC e sebelisanang le li-suspension ka eona, bafuputsi le baetsi ba liforomo ba ka fetola tšebeliso ea eona ho fihlela litšobotsi tse lakatsehang tsa rheological lits'ebetsong tse fapaneng.
Nako ea poso: Mots'eanong-08-2024