Kukho izinto ezininzi ezichaphazela ukusetyenziswa kwe-hydroxypropyl methylcellulose HPMC kwizixhobo zokwakha, ingakumbi iplasta esekwe kwi-gypsum, ngolu hlobo lulandelayo:
1 ukugcinwa kwamanzi
I-Hydroxypropyl methylcellulose yokwakha ithintela ukufunxwa kwamanzi ngokugqithisileyo yi-substrate, kwaye xa i-gypsum iqiniswe ngokupheleleyo, amanzi kufuneka agcinwe kwi-plaster kangangoko kunokwenzeka. Olu phawu lubizwa ngokuba kukugcinwa kwamanzi kwaye luhambelana ngokuthe ngqo ne-viscosity yesisombululo se-hydroxypropyl methylcellulose esakhiweyo kwi-stucco. Okukhona i-viscosity yesisombululo iphezulu, kokukhona amandla okugcina amanzi aphezulu. Nje ukuba umxholo wamanzi unyuswe, amandla okugcina amanzi aya kuncipha. Oku kungenxa yokuba amanzi anyukileyo anciphisa isisombululo se-hydroxypropyl methylcellulose sokwakha, nto leyo ebangela ukwehla kwe-viscosity.
2 ezichasene nokuwa
Iplasta eneempawu ezingaboliyo ivumela abafakeli ukuba bafake amabala amakhulu ngaphandle kokubohla, kwaye ikwathetha ukuba iplasta ngokwayo ayisiyothixotropic, ebinokuthi ityibilike phantsi xa isetyenziswa.
3 Nciphisa uburhabaxa, kulula ukwakha
Iplasta yegypsum ene-viscosity ephantsi kwaye kulula ukuyila ingafumaneka ngokongeza iimveliso ezahlukeneyo ze-hydroxypropyl methylcellulose ezilungiselelwe isakhiwo. Xa usebenzisa amanqanaba e-viscosity ephantsi ye-hydroxypropyl methylcellulose elungiselelwe isakhiwo, inqanaba le-viscosity liyancitshiswa. Ulwakhiwo luba lula, kodwa amandla okugcina amanzi e-hydroxypropyl methylcellulose ene-viscosity ephantsi yokwakha abuthathaka, kwaye inani lokongeza kufuneka lonyuswe.
4 Ukuhambelana kwe-stucco
Kwisixa esimiselweyo se-mortar eyomileyo, kungcono ukuvelisa umthamo ophezulu we-mortar emanzi, enokufezekiswa ngokongeza amaqamza amanzi nomoya. Kodwa ubungakanani bamaqamza amanzi nomoya buninzi kakhulu.
Ixesha lokuthumela: Epreli-20-2023