1. Yiziphi izinkomba zobuchwepheshe eziyinhloko ze-hydroxypropyl methyl cellulose (HPMC)?
Okuqukethwe kwe-HPMC Hydroxypropyl kanye ne-viscosity, abasebenzisi abaningi bakhathazekile ngalezi zinkomba ezimbili. Ukugcinwa kwamanzi ngokuvamile kungcono kulabo abanokuqukethwe okuphezulu kwe-hydroxypropyl. I-viscosity ephezulu, ukugcinwa kwamanzi, okungcono kakhulu (kunokuba okuphelele), kanye ne-viscosity ephezulu, kungcono ukusetshenziswa ku-mortar yesamente.
2. Uyini umsebenzi oyinhloko wokusetshenziswa kwe-HPMC ku-wall putty?
Ku-wall putty, i-HPMC inemisebenzi emithathu: ukuqina, ukugcinwa kwamanzi kanye nokwakhiwa.
Ukuqina: I-Cellulose ingaqiniswa ukuze imiswe futhi igcine isisombululo sifana, futhi imelane nokugoba. Ukugcinwa kwamanzi: yenza i-wall putty yome kancane, futhi isize i-calcium empunga ukuthi isabele ngaphansi kwesenzo samanzi. Ukwakhiwa: I-Cellulose inomphumela wokugcoba, ongenza i-wall putty isebenze kahle.
3. Ingabe ithonsi le-wall putty lihlobene ne-HPMC?
Ukwehla kwe-wall putty kuhlobene kakhulu nekhwalithi ye-calcium yomlotha, kodwa hhayi ne-HPMC. Uma okuqukethwe kwe-calcium ye-calcium yomlotha kanye nesilinganiso se-CaO kanye ne-Ca(OH)2 ku-calcium yomlotha kungafaneleki, kuzobangela ukulahleka kwempuphu. Uma kuhlobene ne-HPMC, khona-ke ukugcinwa kwamanzi okungekuhle kwe-HPMC nakho kuzobangela ukwehla kwempuphu.
4. Ingakanani i-hydroxypropyl methyl cellulose (HPMC) ku-wall putty?
Inani le-HPMC elisetshenziswa ekusetshenzisweni kwangempela liyahlukahluka kuye ngesimo sezulu, izinga lokushisa, ikhwalithi ye-calcium yomlotha wendawo, ifomula ye-wall putty, kanye "nekhwalithi edingekayo ngamakhasimende". Ngokuvamile, phakathi kuka-4 kg no-5 kg. Isibonelo: i-Beijing wall putty iningi layo lingu-5 kg; i-Guizhou iningi layo lingu-5 kg ehlobo kanye no-4.5 kg ebusika; i-Yunnan incane kakhulu, ngokuvamile isukela ku-3 kg kuya ku-4 kg njalo njalo.
5. Iyini i-viscosity efanele ye-hydroxypropyl methyl cellulose (HPMC)?
I-wall putty ngokuvamile ingu-100,000, kodwa i-mortar ifuna kakhulu, futhi kuthatha u-150,000 ukusebenza. Ngaphezu kwalokho, indima ebaluleke kakhulu ye-HPMC ukugcinwa kwamanzi, kulandelwe ukuqina. Ku-wall putty, inqobo nje uma ukugcinwa kwamanzi kukuhle, i-viscosity iphansi (70-80,000), kungenzeka futhi, vele, i-viscosity iphakeme, futhi ukugcinwa kwamanzi okuhlobene kungcono. Lapho i-viscosity idlula u-100,000, i-viscosity ayinawo umthelela ekugcinweni kwamanzi.
6. Ungayikhetha kanjani i-hydroxypropyl methylcellulose (HPMC) efanele ngezinjongo ezahlukene?
Ukusetshenziswa kwe-wall putty: isidingo siphansi, i-viscosity ingu-100,000, kwanele, into ebalulekile ukugcina amanzi engcono. Ukusetshenziswa kwe-mortar: izidingo eziphakeme, i-viscosity ephezulu, okungcono kuno-150,000, ukusetshenziswa kwe-glue: imikhiqizo encibilika ngokushesha, i-viscosity ephezulu.
7. Ukusetshenziswa kwe-HPMC ku-wall putty, yini ebangela ukuthi i-wall putty ikhiqize amabhamuza?
I-HPMC idlala izindima ezintathu ku-wall putty: ukuqina, ukugcinwa kwamanzi kanye nokwakhiwa. Ungahlanganyeli kunoma yikuphi ukusabela. Izizathu zamabhamuza:
(1) Kufakwa amanzi amaningi kakhulu.
(2) Ingqimba engezansi ayomile, futhi kukhuhlwa enye ingqimba kuyo, okulula futhi ukuyipholisha.
Isikhathi sokuthunyelwe: Jan-07-2022