Kunezici eziningi ezithinta ukusetshenziswa kwe-hydroxypropyl methylcellulose HPMC ezintweni zokwakha, ikakhulukazi ukhonkolo osuselwa ku-gypsum, kanjena:
1 ukugcinwa kwamanzi
I-Hydroxypropyl methylcellulose yokwakha ivimbela ukumuncwa kwamanzi ngokweqile yi-substrate, futhi lapho i-gypsum isethwe ngokuphelele, amanzi kufanele agcinwe kusimende ngangokunokwenzeka. Lesi sici sibizwa ngokuthi ukugcinwa kwamanzi futhi silingana ngokuqondile ne-viscosity yesisombululo esikhethekile se-hydroxypropyl methylcellulose ku-stucco. Ukuphakama kwe-viscosity yesisombululo, kuyanda amandla okugcina amanzi. Uma umthamo wamanzi usunyukile, amandla okugcina amanzi azokwehla. Lokhu kungenxa yokuthi amanzi andayo anciphisa isixazululo se-hydroxypropyl methylcellulose ukuze kwakhiwe, okuholela ekwehleni kwe-viscosity.
2 anti-sagging
I-plaster enezakhiwo ezivimbela ukubola ivumela abafake izicelo ukuthi bafake amajazi aminyene ngaphandle kokucwila, futhi kusho ukuthi ukhonkolo ngokwalo aluyona i-thixotropic, ebingashelela phansi ngesikhathi sokufakwa.
3 Yehlisa i-viscosity, ukwakhiwa okulula
Udaka lwegypsum olune-viscosity ephansi futhi okulula ukukwakha lungatholakala ngokungeza imikhiqizo ehlukahlukene ye-hydroxypropyl methylcellulose eqondene nesakhiwo esithile. Uma usebenzisa amamaki e-viscosity aphansi we-hydroxypropyl methylcellulose yesakhiwo esithile, izinga le-viscosity lincishisiwe ngokuqhathaniswa Ukwakhiwa kuba lula, kodwa amandla okugcina amanzi e-low-viscosity hydroxypropyl methylcellulose yokwakha abuthakathaka, futhi inani elingeziwe lidinga ukunyuswa.
4 Ukuhambisana kwe-stucco
Ngenani elinqunyiwe lodaka olomile, ukonga kakhulu ukukhiqiza umthamo ophezulu wodaka olumanzi, ongafinyelelwa ngokungeza amanzi amaningi kanye namabhamuza omoya. Kodwa inani lamanzi namabhamuza omoya likhulu kakhulu
Isikhathi sokuthumela: Apr-20-2023