Ọrụ HPMC na Drymix Mortars

Hydroxypropyl methylcellulose (HPMC) bụ ihe mgbakwunye a na-ejikarị na ngwa ngwa drymix. Ọ bụ ihe na-emepụta cellulose nke na-edozi mmiri ma nwee ike ịmepụta ihe dị ka gel mgbe agbakwunyere na mmiri. Ngwongwo a na-eme HPMC ka ọ bụrụ ihe na-eme ka ọ bụrụ ihe dị mma na-ekekọta, nke mere eji eji ya n'ọtụtụ ụlọ ọrụ dịka nri, ihe ịchọ mma, na ihe owuwu.

N'ime ngwa agha drymix, a na-eji HPMC mee ihe dị ka ihe ngbanwe rheology, onye na-ejide mmiri, na onye na-achụsa ihe. Ọ nwere mmetụta dị ịrịba ama na àgwà na arụmọrụ nke ngwa agha drymix. A na-agbakwunye HPMC n'obere ntakịrị, ọ na-abụkarị 0.1% ruo 0.5% site n'ịdị arọ nke ihe simenti dị na ngwa ngwa drymix.

Otu n'ime isi ọrụ nke HPMC na drymix Mortars bụ imeziwanye arụmọrụ nke ngwa agha. Ọ na-arụ ọrụ dị ka rheology modifier site n'ịbawanye viscosity nke ngwakọta, na-eme ka ọ dịkwuo mfe ịrụ ọrụ. Nke a dị mkpa karịsịa maka ngwa agha drymix nke a na-eji maka tiling ma ọ bụ ihe eji eme ihe n'ala, ebe nkwekọ nke ngwa agha dị oké mkpa maka ntinye kwesịrị ekwesị.

Ọrụ ọzọ dị oke egwu nke HPMC na ngwa agha drymix bụ ikike ya idowe mmiri. Mgbe agwakọtara ya na mmiri, HPMC na-etolite ihe dị ka gel nke na-ejide ụmụ irighiri mmiri n'ime nhazi ya. Ngwongwo a na-enyere aka mee ka mmiri mmiri na-ekpo ọkụ nke drymix, nke dị mkpa maka ọgwụgwọ kwesịrị ekwesị na nhazi nke ngwa agha ahụ. Ọ na-enyekwara aka ibelata mbelata na mgbawa nke ngwa agha.

HPMC na-arụkwa ọrụ dị ka onye na-achụsa ihe na ngwa ngwa drymix. Ọ na-enyere aka igbajisịsịsịsịsịsịsịsịsịsịsịsịsịsịsịsịsịsịsịsịsịsịsịsịsịsịsịsịsịsịsịsịsịsịsịsịsịsịsịnụ, na-eme ka ọ dịrị ha mfe ịgwakọta nke ọma n’ime ngwa ngwa ahụ nile. Ngwongwo a dị mkpa karịsịa maka ngwa agha drymix nke nwere ọtụtụ ihe, dị ka ájá, ciment, na ihe mgbakwunye dị iche iche.

Na mgbakwunye na ọrụ ndị a bụ isi, HPMC nwekwara ike ịnye uru ndị ọzọ na ngwa ngwa drymix. Dịka ọmụmaatụ, ọ nwere ike melite adhesion nke ngwa agha na mkpụrụ, nke dị mkpa maka ngwa dị ka ntinye tile. Ọ nwekwara ike imeziwanye mgbanwe nke ngwa agha ahụ, na-eme ka ọ ghara ịdị na-agbawa ma na-agbaji n'okpuru nrụgide.

Mgbe ị na-ahọrọ HPMC maka ojiji na ngwa ngwa drymix, ekwesịrị ịtụle ọtụtụ ihe. Ihe kachasị mkpa n'ime ihe ndị a bụ viscosity nke HPMC. The viscosity nke HPMC ga-ekpebi ọkwa nke ndim na njide mmiri nke ọ na-enye na ngwa agha. Ihe ndị ọzọ a ga-atụle gụnyere pH nke HPMC, ogo nke nnọchi ya (DS), na nha nha ya.

PH nke HPMC dị mkpa n'ihi na ọ nwere ike imetụta oge nhazi nke ngwa agha ahụ. Ọ bụrụ na pH dị oke elu ma ọ bụ dị ala, ọ nwere ike imetụta mmeghachi omume kemịkalụ na-eme n'oge usoro ọgwụgwọ, na-eduga ná nsogbu dị ka ibelata ike ma ọ bụ ịba ụba.

DS nke HPMC bụ ihe atụ ole hydroxypropyl na methyl dị iche iche na-ejikọta na ọkpụkpụ azụ cellulose. DS dị elu pụtara na ọtụtụ hydroxypropyl na methyl dị ugbu a, nke na-ebute HPMC na-agbaze mmiri na viscous. DS dị ala pụtara na hydroxypropyl na methyl dị ole na ole dị, nke na-ebute HPMC na-agbaze mmiri na obere viscous.

Ogo urughuru nke HPMC nwekwara ike imetụta arụmọrụ ya na ngwa ngwa drymix. Nnukwu urughuru nha nwere ike ịkpata na-ezighị ezi nkesa nke HPMC ofụri ngwa agha, mgbe nta urughuru nha nwere ike ịkpata clumping na agglomeration nke HPMC.

N'ikpeazụ, HPMC bụ ihe mgbakwunye dị mkpa na ngwa ngwa drymix. Ọ na-enye ọtụtụ uru dị iche iche, gụnyere ịrụ ọrụ ka mma, njide mmiri, na mgbasa nke ụmụ irighiri ihe.