Mmetụta nke hydroxypropyl methylcellulose na ngwa agha

E nwere ọtụtụ ihe na-emetụta ojiji nke hydroxypropyl methylcellulose HPMC n'ihe eji arụ ụlọ, ọkachasị plasta gypsum, dịka ndị a:

1 njide mmiri

Hydroxypropyl methylcellulose maka owuwu na-egbochi oke mmiri site na substrate, ma mgbe gypsum ahụ dị ọcha kpamkpam, a ga-edebe mmiri ahụ na plasta ruo n'ókè o kwere mee. A na-akpọ njirimara a njigide mmiri ma ọ dabara kpọmkwem na viscosity nke ngwọta hydroxypropyl methylcellulose nke a na-ewu na stucco. Ka viscosity nke ngwọta ahụ dị elu, otú ahụ ka ikike idobe mmiri ya dị elu. Ozugbo ọdịnaya mmiri ahụ mụbara, ikike idobe mmiri ga-ebelata. Nke a bụ n'ihi na mmụba mmiri ahụ na-agbaze mmiri nke hydroxypropyl methylcellulose maka owuwu, na-ebute mbelata na viscosity.

2 mgbochi ịda mba

Plasta nwere ihe ndị na-egbochi sag na-enye ndị na-etinye ya ohere itinye mkpuchi ndị dị arọ n'enweghị ịda ada, ọ pụtakwara na plasta ahụ n'onwe ya abụghị thixotropic, nke ga-ada ada mgbe a na-etinye ya.

3 Belata viscosity, ọ dị mfe ịrụ ya

Enwere ike inweta obere viscosity na plasta gypsum dị mfe ịrụ site na ịgbakwunye ngwaahịa hydroxypropyl methylcellulose dị iche iche maka ụlọ. Mgbe ị na-eji ọkwa viscosity dị ala nke hydroxypropyl methylcellulose maka ụlọ, ogo viscosity na-ebelata. Nrụpụta ahụ na-adị mfe karị, mana ikike idobe mmiri nke obere viscosity hydroxypropyl methylcellulose maka owuwu adịghị ike, a ga-emekwa ka ego mgbakwunye dịkwuo elu.

4 Ndakọrịta nke stucco

Maka obere ite akọrọ a kapịrị ọnụ, ọ dị mma karịa imepụta ite mmiri dị elu, nke enwere ike nweta site na itinye ọtụtụ afụ mmiri na ikuku. Mana oke mmiri na afụ ikuku dị oke oke.