Mekhahlelo ea Viscosity e Ikhethileng: Kamoo Moetsi oa HPMC a Finyellang Litlhoko tse Fapaneng tsa Formation

Thepa ea sejoale-joale ea kaho e hloka ts'ebetso e nepahetseng. Ho tloha ho likhomaretsi tsa thaele le putty ea leboteng ho ea ho li-dry-mixed mortars, motsoako o mong le o mong o hloka tekano e itseng ea ho sebetsa, ho boloka metsi le nako ea ho bula. Setsebi Moetsi oa HPMC e fihlela litlhoko tsena tse fapaneng tsa ho etsa dibopeho ka ho ntshetsa pele dikereiti tsa viscosity tse ikgethileng tse etseditsweng ditshebediso tse itseng.

1. Hobaneng ho ba le ho hlaka ho le bohlokwa Ditshebedisong tsa HPMC

Viscosity ke e 'ngoe ea lintlha tsa bohlokoa ka ho fetisisa tsa HPMCE susumetsa ka ho toba:

• Ho boloka metsi lits'ebetsong tse thehiloeng ho samente le gypsum
• Ho sebetsa le phallo nakong ea ts'ebeliso
• Nako ea ho bula le ho hanyetsa ho thella ha likhomaretsi tsa thaele
• Boleng ba ho qeta bokaholimo ka putty ea leboteng

Thepa e fapaneng ea kaho e hloka mefuta e fapaneng ea viscosity. Ho sebelisa sehlopha se sa lokelang ho ka lebisa ts'ebetsong e mpe kapa litšenyehelong tse eketsehileng tsa ho etsa motsoako.

2. Kamoo Baetsi ba HPMC ba Ralang Mekhahlelo ea Viscosity e Ikhethileng

Ntlafatso ea viscosity e ikhethileng e qala boemong ba tlhahiso. Bahlahisi ba litsebi ba HPMC ba laola liparamente tsa bohlokoa tsa tlhahiso, ho kenyeletsoa:

• Tekanyo ea polymerization ea liketane tsa selulose
• Maemo a karabelo ea Etherification
• Maemo a ho nkela methoxy le hydroxypropyl sebaka
• Mekhoa ea ho omisa le ho sila

Ka ho fetola diparamente tsena, bahlahisi ba ka fetola diprofaele tsa viscosity ka nepo ha ba ntse ba boloka ho qhibiliha le tshebetso e tsitsitseng.

3. Ho bapisa Viscosity le Mekhoa e Ikhethang ea Kaho

Mekhoa e fapaneng ea kaho e hloka litšobotsi tse ikhethang tsa ho teteana:

• Likhomaretsi tsa thaele: Viscosity e leka-lekaneng bakeng sa ho hanyetsa ho sag le nako e telele ea ho buleha
• Sesepa sa lebota: Viscosity e mahareng bakeng sa ts'ebeliso e boreleli le qetello ea bokaholimo
• Li-mortar tse nang le motsoako o omileng: Ho teteana ho laoloang bakeng sa ho boloka metsi le ho sebetsa ka mokhoa o ts'oanang

Moetsi ea nang le boiphihlelo oa HPMC o hlahloba mekhoa ea bareki 'me o khothaletsa kapa o hlahisa limaraka tse loketseng tsa viscosity ho ntlafatsa ts'ebetso.

4. Teko le Netefatso e Thehiloeng ho Ts'ebeliso

Mekhahlelo ea viscosity e ikhethileng e netefatsoa ka liteko tse thehiloeng ho ts'ebeliso ho e-na le ho itšetleha feela ka data ea viscosity ea laboratori. Liteko tsena hangata li kenyelletsa:

• Tekanyo ea ho boloka metsi
• Tlhahlobo ea bokhoni ba ho sebetsa le botsitso
• Nako e bulehileng le ts'ebetso ea ho khomarela
• Ho lumellana le lisebelisoa tse ling

Sena se netefatsa hore mephato ea HPMC e ikhethileng e sebetsa ka mokhoa o tšepahalang tlas'a maemo a tlhahiso le ts'ebeliso ea 'nete.

5. Ho netefatsa ho tsitsa ha sehlopha ho ea ho sehlopha bakeng sa limaraka tse ikhethileng

Ho iketsetsa lintho ha ho bolele ho feto-fetoha. Bahlahisi ba litsebi ba HPMC ba kenya tšebetsong litsamaiso tse thata tsa taolo ea boleng ho netefatsa hore sehlopha se seng le se seng sa sehlopha sa viscosity se ikhethileng se fihlela litlhoko tse tšoanang.

Ho tsitsa hona ho dumella bahlahisi ba thepa ya kaho ho hodisa tlhahiso ntle le ho ntlafatsa kgafetsa kapa ho fetola tshebetso.

Qetello

Mekhahlelo ea viscosity e ikhethileng e nolofalletsa bahlahisi ba HPMC ho tšehetsa litlhoko tse fapaneng tsa sebopeho ho pholletsa le mefuta e mengata ea lits'ebetso tsa kaho. Ka taolo e nepahetseng ea ts'ebetso, liteko tse shebaneng le ts'ebeliso, le netefatso e tiileng ea boleng, bahlahisi ba fana ka litharollo tsa HPMC tse ikhethileng tse ntlafatsang ts'ebetso ha ba ntse ba boloka botsitso ba nako e telele. Bakeng sa bahlahisi ba thepa ea kaho, ho sebelisana le moetsi ea khonang ho etsa viscosity ka mokhoa o ikhethileng ke ntlha ea bohlokoa ho fihlelleng lihlahisoa tse tsitsitseng le tsa boleng bo holimo.

Litšupiso

1. Heinze, T. Li-Ether tsa Cellulose le Litšebeliso tsa Tsona Kahong. Kaho le Thepa ea Kaho. https://www.sciencedirect.com
2. Prajapati, VD et al. Hydroxypropyl Methylcellulose (HPMC): Thepa le Litšebeliso tsa Liindasteri.Koranta ea Lipatlisiso tsa Polymer. https://www.researchgate.net
3. Mokhatlo oa Europe oa Lik'hemik'hale tsa Kaho (FEICA). https://www.feica.eu