Karolo ea Hydroxypropyl Methylcellulose (HPMC) Metsoakong ea Samente

Hydroxypropyl Methylcellulose (HPMC)ke tlatsetso e sebelisoang haholo linthong tse thehiloeng ho samente ka lebaka la thepa ea eona e fapaneng e matlafatsang ts'ebetso, ho boloka metsi, le matla a mochini. Pampiri ena e ikemiselitse ho fana ka kutloisiso e felletseng ea litšebelisano lipakeng tsa HPMC le samente, e shebane le litekanyo tse nepahetseng bakeng sa lits'ebetso tse fapaneng. Puisano e akaretsa tšusumetso ea HPMC ts'ebetsong ea hydration, thepa ea rheological, le ts'ebetso e akaretsang ea metsoako ea samente.

Hydroxypropyl Methylcellulose (HPMC) e hlahile e le tlatsetso ea bohlokoa linthong tse entsoeng ka samente, e fanang ka melemo e mengata joalo ka ts'ebetso e ntlafalitsoeng, ho boloka metsi, le thepa e ntlafalitsoeng ea mochini. Ho kopanngoa ha HPMC metsoakong ea samente ho se ho tloaelehile indastering ea kaho lefatšeng ka bophara. Ho utloisisa karo-karolelano e nepahetseng ea HPMC ho samente hoa hlokahala bakeng sa ho fihlela litšoaneleho tse lakatsehang tsa ts'ebetso lits'ebetsong tse fapaneng ho tloha ho seretse ho isa ho metsoako ea ho ikemela.

1.Properties le Mesebetsi ea HPMC ka Metsoako ea Samente

(1) Ntlafatso ea ho sebetsa

O mong oa mesebetsi ea mantlha ea HPMC metsoakong ea samente ke ho ntlafatsa ts'ebetso. Ho eketsoa ha HPMC ho fetola thepa ea rheological ea pente ea samente, ho fokotsa khatello ea lihlahisoa le ho matlafatsa phallo. Phello ena e na le molemo ka ho khetheha lits'ebetsong tse hlokang ho behoa ha bonolo le ho qeta, tse kang ho lipola le fatše.

(2) Ho boloka Metsi

HPMC e sebetsa e le moemeli oa ho boloka metsi lits'ebetsong tsa cementitious, ho thibela tahlehelo ea metsi ka potlako nakong ea mekhahlelo ea pele ea ho phalla ha metsi. Thepa ena e bohlokoa bakeng sa ho netefatsa hore hydration e nepahetseng ea likaroloana tsa samente, e lebisang ntlafatsong ea matla le ho tšoarella ha thepa e thata.

(3) Ntlafatso ea Matla

Ntle le ho ntlafatsa ts'ebetso le ho boloka metsi, HPMC e ka boela ea kenya letsoho ho matla a mochine a thepa e thehiloeng ho samente. Ka ho ntlafatsa phallo ea likaroloana le ho fokotsa karohano, HPMC e khothalletsa metsi a ts'oanang le ho paka likaroloana tsa samente, e leng se etsang hore ho be le matla a ntlafetseng a khatello le flexural.

2. Tšusumetso ea HPMC-Cement Ratio ho Thepa ea Metsoako ea Samente

(1) Phello ea ho sebetsa

Karolelano ea HPMC ho samente e susumetsa haholo ho sebetsa ha metsoako ea samente. Maemo a phahameng a HPMC a atisa ho eketsa phallo le ho fokotsa khatello ea lihlahisoa tsa pente, ho etsa hore ho be bonolo ho sebetsana le ho laola. Leha ho le joalo, bongata bo feteletseng ba HPMC bo ka lebisa tlhokong e feteletseng ea metsi le nako e telele ea ho beha, ho beha ts'ebetso ea kakaretso ea motsoako kotsing.

(2) Tšusumetso ho Hydration Kinetics

Boteng ba HPMC bo ka fetola hydration kinetics ea samente ka lebaka la tšusumetso ea eona ho fumaneha ha metsi le litekanyetso tsa phallo. Le ha HPMC e ntlafatsa ho bolokoa ha metsi, e kanna ea liehisa karabelo ea pele ea hydration, e ama nako ea ho beha le nts'etsopele ea matla a pele a thepa. Ka hona, ho ntlafatsa karo-karolelano ea HPMC-samente ho bohlokoa ho etsa hore ho be le tekano lipakeng tsa ho sebetsa le kinetics ea hydration.

(3) Thepa ea Mechini

Thepa ea mochini ea thepa ea samente e amana haufi-ufi le karo-karolelano ea samente ea HPMC. Ka ho laola ho hasana le ho paka likaroloana tsa samente, tekanyo e nepahetseng ea HPMC e ka ntlafatsa matla a kakaretso le ho tšoarella ha thepa e thata. Leha ho le joalo, palo e feteletseng ea HPMC e ka senya ts'ebetso ea mochine ka ho fokotsa samente e sebetsang hantle le ho eketsa porosity.

3.Lintho Tse Susumetsang Tšebelisano ea HPMC-Cement

(1) Tšebelisano ea Lik'hemik'hale

Khokahano lipakeng tsa HPMC le samente e ipapisitse le tšebelisano ea bona ea lik'hemik'hale, ho kenyeletsoa bonding ea hydrogen le adsorption ea bokaholimo. Khetho e nepahetseng ea limaraka tsa HPMC le mefuta ea samente e bohlokoa ho netefatsa ho lumellana le ho qoba litlamorao tse mpe joalo ka ho lieha kapa karohano.

(2) Kabo ea Boholo ba Karolo

Kabo ea boholo ba likaroloana tsa HPMC e bapala karolo ea bohlokoa ts'ebetsong ea eona mefuteng ea samente. Likaroloana tsa HPMC tse arohaneng hantle li atisa ho qhalakana ka katleho ho peista ea samente, e lebisang ho ntlafatseng ho boloka metsi le ho sebetsa. Leha ho le joalo, likotlo tse feteletseng li ka 'na tsa fella ka ho haha ​​​​viscosity le bothata ba ho kopanya.

(3) Maemo a Tikoloho

Lintlha tsa tikoloho tse kang mocheso le mongobo li ka susumetsa ho etsa

HPMC tsamaisong ea cementitious. Lithempereichara tse phahameng li ka potlakisa ts'ebetso ea hydration le ho ama thepa ea rheological ea motsoako, ha mocheso o tlase o ka khutlisa maemo le ho fokotsa nts'etsopele ea matla a pele. Mekhoa e nepahetseng ea ho phekola e bohlokoa ho fokotsa tšusumetso ea maemo a tikoloho ho tsamaellanang le HPMC-samente.

4.Maano a ho Finyella Karolelano e Ntle ea HPMC-Samente

(1) Ntlafatso ea Teko

Boikemisetso ba karo-karolelano e nepahetseng ea HPMC-samente hangata e kenyelletsa liteko tsa liteko ho lekola ts'ebetso ea metsoako e fapaneng ea motsoako. Liteko tsa 'mele, joalo ka phallo le litekanyo tsa viscosity, li ka fana ka leseli la bohlokoa mabapi le litlamorao tsa maemo a fapaneng a HPMC mabapi le ho sebetsa ha metsoako ea samente.

(2) Mohlala le Ketsiso

Mekhoa ea ho etsa lipalo le mekhoa ea ho etsisa e ka thusa ho bolela esale pele boitšoaro ba litsamaiso tsa HPMC-samente tlas'a maemo a fapaneng. Ka ho kenyelletsa liparamente tse kang kabo ea boholo ba likaroloana, hydration kinetics, le lintlha tsa tikoloho, mehlala e ka thusa ho ntlafatsa karo-karolelano ea HPMC ho samente bakeng sa lits'ebetso tse itseng.

(3) Taolo ea Boleng le Tlhokomelo

Taolo ea kamehla ea boleng le tlhokomelo eaHPMC-metsoako ea samente e bohlokoa ho etsa bonnete ba ho ts'epahala le ho ts'epahala mekhoeng ea kaho. Mekhoa ea liteko e joalo ka tlhahlobo ea matla a hatellang, ho beha qeto ea nako, le tlhahlobo ea microstructural e ka thusa ho lekola ts'ebetso ea lisebelisoa tsa samente le ho tseba phapang efe kapa efe ho tsoa ho likarohano tse lakatsehang.

Hydroxypropyl Methylcellulose (HPMC) e bapala karolo ea bohlokoa ho ntlafatseng thepa ea thepa e thehiloeng ho samente, e fana ka melemo e joalo ka ts'ebetso e ntlafalitsoeng, ho boloka metsi, le matla a mochini. Karolelano e nepahetseng ea HPMC ho samente e ipapisitse le lintlha tse fapaneng, ho kenyeletsoa litšobotsi tse lakatsehang tsa ts'ebetso, maemo a tikoloho, le ho tsamaellana le li-additives tse ling. Ka ho utloisisa litšebelisano lipakeng tsa HPMC le samente, le ho sebelisa maano a nepahetseng bakeng sa ho ntlafatsa karo-karolelano, litsebi tsa kaho li ka sebelisa bokhoni bo felletseng ba HPMC ho fihlela ts'ebetso e phahameng le ho tšoarella lits'ebetsong tsa samente.