Ku-mortar exutshwe ngomumo, ukungezwa kwe-cellulose ether kuphansi kakhulu, kodwa kungathuthukisa kakhulu ukusebenza kwe-mortar emanzi, okuyisengezo esikhulu esithinta ukusebenza kokwakhiwa kwe-mortar. Indima ebalulekile ye-HPMC ku-mortar itholakala kakhulu ezicini ezintathu, esinye yikhono elihle lokugcina amanzi, esesibili yithonya ekuqineni kwe-mortar, kanti esesithathu ukusebenzisana ne-samente.
1. Uma i-viscosity ye-cellulose ether inkulu, kulapho ukusebenza kokugcinwa kwamanzi kuba ngcono khona.
2. Uma inani elikhulu le-cellulose ether ku-mortar, kulapho ukusebenza kokugcinwa kwamanzi kuba ngcono khona.
3. Ngosayizi wezinhlayiya, uma izinhlayiya zincane, kuba ngcono ukugcinwa kwamanzi.
4. Ukugcinwa kwamanzi kwe-methyl cellulose ether kuncipha ngokwanda kwezinga lokushisa.
Umphumela wokujiya we-hydroxypropyl methyl cellulose njengesithambisi uhlobene nosayizi wezinhlayiya, i-viscosity kanye nokuguqulwa kwe-hydroxypropyl methyl cellulose. Ngokuvamile, lapho i-viscosity ye-cellulose ether iphakeme, usayizi wezinhlayiya uba mncane, umphumela wokujiya ubonakala kakhulu.
Indima yesithathu yama-cellulose ethers ukuvimbela inqubo yokumunca usimende. Ama-cellulose ethers anikeza udoti izakhiwo eziningi eziwusizo futhi anciphise ukukhishwa kokushisa kwesimende ngokushesha futhi avimbele inqubo yamandla okumunca usimende. Uma ukugcwala kwe-cellulose ether ezintweni zejeli yamaminerali kuphakeme, kulapho umphumela wokumunca okuphuzile ubonakala khona. Ama-cellulose ethers awagcini nje ngokuvimbela ukusetha, kodwa futhi abambezela inqubo yokuqina kwezinhlelo zodoti wesimende. Ngokwanda komthamo we-HPMC, isikhathi sokusetha udoti sanda kakhulu.
Ngamafuphi, ku-mortar exutshwe ngomumo, i-HPMC idlala indima yokugcina amanzi, ukuqina, ukubambezela amandla okumunca usimende kanye nokuthuthukisa ukusebenza kokwakhiwa. Amandla amahle okugcina amanzi enza ukumunca usimende kuphelele, okungathuthukisa ukunamathela okumanzi komortar emanzi futhi kwandise amandla okubopha komortar. Ngakho-ke, i-HPMC isetshenziswa kabanzi njengesithasiselo esibalulekile kumortar exutshwe ngomumo.
Isikhathi sokuthunyelwe: Jan-20-2022