Kedu otu esi ahọrọ hydroxypropyl methylcellulose maka ngwa agha plasta?

Uru pH izugbe nke ngwaahịa gypsum bụ acidic ma ọ bụ na-anọpụ iche. Ugbu a, e nwere ụdị ọkwa ihe owuwu abụọ.hydroxypropyl methylcellulosen'ahịa: cellulose na-agbaze nwayọ nwayọ na cellulose ozugbo (S). Cellulose ozugbo adabaghị maka sistemụ gypsum. Ngwaahịa, ịgbaze adịghị mma nke ukwuu n'okpuru ọnọdụ acidic ma ọ bụ nke na-anọpụ iche, enwere ike ịgbaze hydroxypropyl methylcellulose na-agbaze nwayọ nwayọ na ngwaahịa gypsum, mana cellulose na-agbaze nwayọ nwayọ nwere nnukwu nsogbu, ọ dị mfe ịgbakọta (mgbe gypsum Mgbe a kpalitere moto ahụ na mgbidi ruo obere oge, obere ntụpọ granular na-apụtakarị n'elu). Ugbu a, na ngwaahịa gypsum, ọkachasị na moto gypsum nke a na-agbaze na igwe, ọ dị mkpa ka cellulose ether gbasaa kpamkpam ma gbazee n'ime obere oge, nke chọrọ ka anyị mee nnyocha miri emi na usoro mmepụta cellulose ether na-agbaze nwayọ nwayọ. Ọgwụgwọ elu (ọ bụghị ihe a na-akpọ mgbakwunye nke ihe mgbakwunye ndị ọzọ na cellulose ether nkịtị), ka o wee kwekọọ na sistemụ moto gypsum. Hydroxypropyl methylcellulose ether nwere ọgwụgwọ elu miri emi nwere ike inwe oge mgbaze kwụsiri ike na ezigbo ihe onwunwe igwe na moto gypsum, ma nwee ike imeziwanye usoro nhazi na mmecha nke moto nke ukwuu.

A na-ejikarị hydraulicpropyl methylcellulose ether nke a na-agba n'ime igwe eme ihe n'etiti 20,000 na 75,000, ego mgbakwunye na-abụkarị 0.2% ruo 0.4%. A na-achịkwa oge ntọala nke gypsum mortar nke a na-agba n'ime igwe ihe dị ka otu awa. Anyị na-eji nrụgide gypsum mortar, viscosity plastik, thixotropy, rheology na nguzosi ike nke slurry iji chọpụta arụmọrụ nke ngwaahịa gypsum mortar.

Anyị na-atụle njikwa mma nke desulfurization gypsum isi iyi calcining usoro, ihe ndị na-ejupụta (simenti, obere mkpokọta, ntụ ntụ calcium dị arọ) na ihe ndị na-agwakọta (enwere ike iji ya na ntụ ntụ latex gbasaa, hydroxypropyl methyl cellulose ether, gbasaa perlite, gypsum retarder) Nhọrọ nke usoro ngwaahịa zuru oke na-efu ego.

Hydroxypropyl methyl cellulose ethermaka gypsum mortar nwere ịdị ọcha dị elu ma dịkwa mma ịrụ ọrụ, ndị ahịa gypsum mortar etoola ya nke ukwuu.