I-Hydroxypropylmethylcellulose HPMC ku-plastering mortars

Umkhiqizo we-Hydroxypropyl methylcellulose (HPMC) wodaka lokunamathisela odongeni lwangaphandle ulungiswa kusuka ku-high-purity cotton cellulose ngokusebenzisa i-etherification ekhethekile ngaphansi kwezimo ze-alkali. Yonke le nqubo iqedwa ngaphansi kokuqapha okuzenzakalelayo futhi ayiqukethe izithako zezilwane. Izithako ezisebenzayo njengezitho namafutha. Isetshenziswa kabanzi ukwenza ngcono ukusebenza kwezinto zokwakha ezingama-hydraulic ezifana usimende negypsum. Kusimende owenziwe usimende, kungathuthukisa ukugcinwa kwamanzi, kunwebe isikhathi sokulungisa kanye nesikhathi esivulekile, futhi kunciphise ukuwohloka.

Odakeni lokuplasta, inani elingeziwe le-hydroxypropyl methylcellulose liphansi kakhulu, kodwa lingathuthukisa kakhulu ukusebenza kodaka lokukhonkolo, futhi liyingxube eyinhloko ethinta ukusebenza kokwakhiwa kodaka. Ukukhethwa okunengqondo kwe-hydroxypropyl methylcellulose enama-viscosities ahlukene kanye nenani elingeziwe linomphumela omuhle ekuthuthukiseni ukusebenza kwe-powder mortar eyomile.

Ekukhoneni kukasimende, i-hydroxypropyl methylcellulose HPMC ibamba iqhaza ekugcineni amanzi, ukuqina, ukubambezeleka kokukhipha usimende, kanye nokwenza ngcono ukusebenza komsebenzi wokwakha.

Ikhono elihle lokugcina amanzi lenza ukugeleza kukasimende kuphelele, kungakhuphula i-viscosity emanzi yodaka olumanzi, kuthuthukise amandla okubopha odaka, futhi kungalungisa isikhathi sokusebenza. Ukwengeza, ukusebenza kokumpompa kodaka lokufafaza kungathuthukiswa ngenxa yokwengezwa kwe-hydroxypropyl methylcellulose HPMC, ngakho i-hydroxypropyl methylcellulose HPMC izothuthukiswa kabanzi njengesithako sodaka.

1. Izakhiwo ezigcina amanzi - i-hydroxypropyl methylcellulose HPMC iwukuvimbela amanzi ukuthi angangeni odongeni.

Inani elifanele lamanzi lishiywa odakeni, okuvumela usimende ukuba ube nesikhathi eside sokukhipha amanzi.

Ukugcinwa kwamanzi kuhambisana ngokuqondile ne-viscosity yesisombululo se-cellulose ether ku-mortar.

Ukuphakama kwe-viscosity, kungcono ukugcina amanzi. Uma ama-molecule amanzi anda, ukugcinwa kwamanzi kuzokwehla.

Ngenxa yokuthi inani elifanayo lesisombululo se-hydroxypropyl methylcellulose HPMC ukuze kwakhiwe, ukwanda kwamanzi kusho ukuncipha kwe-viscosity.

Ukugcinwa kwamanzi okwandisiwe kuzoholela esikhathini eside sokuphulukiswa kodaka olusetshenzisiwe.

2. I-HPMC thickener isetshenziswa kakhulu njenge-thickener ku-ejenti yesixhumi esibonakalayo.

Ingathuthukisa amandla aqinile namandla aguquguqukayo, ithuthukise ukumbozwa kwendawo, ithuthukise ukunamathela, futhi ikhulise amandla okunamathela odaka.

Ukungena kahle kuthuthukisa ukufana kwesixhumi esibonakalayo. Thuthukisa ukuthambisa kanye nokuguquguquka kodaka, kwenze kube lula ukusebenzisa nokuthuthukisa ukusebenza kahle komsebenzi.

3. Ukusetshenziswa kwe-hydroxypropyl methylcellulose HPMC kungathuthukisa ukwakhiwa kodaka.

Iglue yethayela ingasetshenziswa njenge-ejenti egcina amanzi kanye nokunamathela ekuhlanganisweni kwamathayili, okungathuthukisa kakhulu ukusebenza kokwakhiwa kwe-adhesive, kuyenze ibe nesikhathi esivulekile eside nokunamathela okuqinile, futhi ivimbele amathayela ukuthi angawi ngokushesha. .

Ithuthukise ukucutshungulwa, ukugcinwa kahle kwamanzi, ukunamathela okuthuthukisiwe kanye nokumelana nokuqina okuphezulu.

Thuthukisa ukusebenza kahle kwamathayili, uthuthukise ukusebenza kahle kwamathayili, uthuthukise amandla okubopha kanye namandla okugunda.

4. Ikhono lokugcoba.

Wonke ama-ejenti afaka umoya-mpilo asebenza njengama-ejenti wokumanzisa.

Njengoba enciphisa ukungezwani kwendawo, asiza ekusakazeni izimpushana ezinhle odakeni lapho zixutshwe namanzi.

5. I-anti-sag mortar isho ukuthi ayikho ingozi yokucwila noma ukuwohloka ngesikhathi sokwakhiwa kongqimba oluwugqinsi.

Ukumelana ne-sag kungathuthukiswa ngokusebenzisa i-hydroxypropyl methylcellulose HPMC plastering mortar.

Ikakhulukazi i-hydroxypropyl methylcellulose HPMC esanda kwakhiwa yokuplasta udaka inganikeza ukusebenza okungcono kodaka lokulwa nokusaga.