Zininzi izinto ezichaphazela ukusetyenziswa kwe-hydroxypropyl methylcellulose HPMC kwizinto zokwakha, ngakumbi udaka olusekwe kwigypsum, ngolu hlobo lulandelayo:
1 ukugcinwa kwamanzi
I-Hydroxypropyl methylcellulose yokwakha ikhusela ukufunxa ngokugqithisileyo kwamanzi nge-substrate, kwaye xa i-gypsum ibekwe ngokupheleleyo, amanzi kufuneka agcinwe kwi-plaster kangangoko kunokwenzeka. Olu phawu lubizwa ngokuba ngukugcinwa kwamanzi kwaye luhambelana ngokuthe ngqo kwi-viscosity yesisombululo esikhethekileyo se-hydroxypropyl methylcellulose kwi-stucco. Iphezulu i-viscosity yesisombululo, iphezulu amandla okugcina amanzi. Nje ukuba umthamo wamanzi unyuswe, umthamo wokugcina amanzi uya kuncipha. Oku kungenxa yokuba amanzi andayo anciphisa isisombululo se-hydroxypropyl methylcellulose yokwakha, okukhokelela ekunciphiseni kwe-viscosity.
2 anti-sagging
I-plaster ene-anti-sag properties ivumela abafaki-zicelo ukuba bafake iidyasi ezityebileyo ngaphandle kokugxwala, kwaye kuthetha ukuba udaka ngokwalo aluyiyo i-thixotropic, enokuthi ihlehle ngexesha lokufaka isicelo.
3 Ukunciphisa i-viscosity, ukwakhiwa okulula
I-Low-viscosity kunye ne-gypsum plaster ekulula ukuyakha inokufumaneka ngokongeza iimveliso ezahlukeneyo ze-hydroxypropyl methylcellulose kwisakhiwo. Xa usebenzisa amabakala asezantsi e-viscosity yesakhiwo esithile se-hydroxypropyl methylcellulose, iqondo le-viscosity liyancitshiswa ngokulinganayo Ukwakhiwa kuba lula, kodwa ukugcinwa kwamanzi kwi-low-viscosity hydroxypropyl methylcellulose yokwakhiwa kubuthathaka, kwaye inani elongezelelweyo lifuna ukwandiswa.
4 Ukuhambelana kwe-stucco
Ngomlinganiselo omiselweyo wodaka olomileyo, lunoqoqosho ngakumbi ukuvelisa umthamo ophezulu wodaka olumanzi, olunokufezekiswa ngokudibanisa amanzi amaninzi kunye namaqamza omoya. Kodwa ubungakanani bamanzi kunye namaqamza omoya kakhulu kakhulu
Ixesha lokuposa: Apr-20-2023