Kedu otu esi ahọrọ hydroxypropyl methylcellulose maka plasta ụrọ?

Uru pH n'ozuzu nke ngwaahịa gypsum bụ acidic ma ọ bụ na-anọpụ iche. Ugbu a, e nwere ụdị abụọ nke ọkwa ihe owuwuhydroxypropyl methylcellulosen'ahịa: cellulose na-agbaze ngwa ngwa na cellulose ozugbo (S). Ngwa ngwa cellulose adịghị mma maka usoro gypsum. Ngwaahịa, solubility dị nnọọ ogbenye n'okpuru acidic ma ọ bụ na-anọpụ iche ọnọdụ, na ngwa ngwa-dissolving hydroxypropyl methylcellulose nwere ike etisasịwo na gypsum ngwaahịa, ma ngwa ngwa-dissolving cellulose nwere a ịrịba mwepu, ọ dị mfe agglomerate (mgbe gypsum Mgbe ngwa agha na-akpalite na. mgbidi maka obere oge, obere ntụpọ granular na-apụta n'elu). Ka ọ dị ugbu a, na ngwaahịa gypsum, karịsịa n'ime igwe gypsum gypsum, a na-achọ ka ether cellulose ether nwere ike ịgbasa n'ụzọ zuru ezu ma gbazee n'ime obere oge, nke na-achọ ka anyị mee nchọpụta miri emi na ether cellulose na-agbaze ngwa ngwa. usoro mmepụta. Ngwọta dị n'elu (ọ bụghị ihe a na-akpọ mgbakwunye nke ihe mgbakwunye ndị ọzọ na ọkwa cellulose ether nkịtị), ka ọ na-emegharị na usoro ngwa agha gypsum. Hydroxypropyl methylcellulose ether na miri n'elu ọgwụgwọ nwere ike kwụsie ike mgbasa oge na ezi n'ibu Njirimara na gypsum ngwa agha, na nwere ike budata mma larịị larịị na imecha usoro nke ngwa agha.

Mortar gypsum nke igwe na-efesa n'ozuzu na-eji hydroxypropyl methylcellulose ether dị obere viscosity n'etiti 20,000 na 75,000, na mgbakwunye ego na-adịkarị 0.2% ruo 0.4%. A na-achịkwa oge nhazi nke ngwa ngwa gypsum na-efesa igwe n'ihe dịka elekere 1. Anyị na-eji gypsum ngwa agha na-amịpụta nrụgide, viscosity rọba, thixotropy, rheology na nkwụsi ike nke slurry iji kpebie arụmọrụ nke ngwaahịa ngwa agha gypsum.

Anyị na-atụle àgwà akara nke desulfurization gypsum isi calcining usoro, fillers (ciment, ezi mkpokọta, arọ calcium ntụ ntụ) na admixtures (nwere ike ji mee ihe na-achụsakwa latex ntụ ntụ, hydroxypropyl methyl cellulose ether, gbasaa perlite, gypsum retarder) Nhọrọ nke mkpokọta. usoro ngwaahịa na-eri-irè.

Hydroxypropyl methyl cellulose ethern'ihi na ngwa agha gypsum nwere ịdị ọcha dị elu na arụ ọrụ dị mma, ndị ahịa gypsum ngwa agha na-etokwa ya nke ọma.