I-Hydroxypropyl Methylcellulose (HPMC) iyisengezo esishintshashintshashintshashintshashintshayo esivame ukusetshenziswa kuma-adhesives nama-grouts ngekhono laso lokuthuthukisa ukusebenza nokusebenza. Izakhiwo zayo zinomthelela ezicini ezihlukahlukene zenqubo yokunamathela kanye ne-grouting, ethinta izici ezifana namandla okubopha, ukugcinwa kwamanzi, isikhathi esivulekile, ukumelana ne-sag, nokuqina okuphelele. Ukuqonda ukuthi i-HPMC isebenza kanjani kulezi zinto kudinga ukuhlolisisa ukwakheka kwayo kwamakhemikhali, ukusebenzisana kwayo namanzi, kanye neqhaza layo ezinqubweni zokunamathela nezokugxumeka.
Isakhiwo Sekhemikhali se-HPMC:
I-HPMC iyi-ether ye-cellulose etholakala ku-cellulose yemvelo, i-polysaccharide etholakala ezitshalweni.
Isakhiwo saso samakhemikhali siqukethe amaketanga e-cellulose backbone ane-hydroxypropyl nama-methyl substituents.
Izinga lokushintsha (DS) lawa maqembu linquma izakhiwo ze-HPMC, okuhlanganisa ukuncibilika kwayo, amandla okugcina amanzi, nokuziphatha kwe-rheological.
Ukugcinwa kwamanzi:
I-HPMC inokuhlobana okuphezulu kwamanzi ngenxa yemvelo yayo ye-hydrophilic, yakha amabhondi e-hydrogen nama-molecule amanzi.
Ezinamathiselwe zamathayili, i-HPMC isebenza njenge-ejenti egcina amanzi, yandisa isikhathi esivulekile sokunamathela.
Lesi sikhathi esivulekile esinwetshiwe sivumela ukusebenza okungcono nokunamathela okuthuthukisiwe ngokuvimbela ukomiswa ngaphambi kwesikhathi kwe-adhesive.
Ukusebenza Okuthuthukisiwe:
Ukuba khona kwe-HPMC kuzinto zokunamathisela zamathayili nama-grouts kuthuthukisa ukusebenza kwazo ngokuthuthukisa izakhiwo zazo ze-rheological.
I-HPMC isebenza njenge-thickener kanye ne-stabilizer, idlulisela ukuziphatha kwe-pseudoplastic kokunamathelayo noma i-grout.
Le pseudoplasticity yehlisa ukuwohloka noma ukuwohloka ngesikhathi sokufaka isicelo, iqinisekisa ukumbozwa okungcono nokufana.
Amandla Okuhlanganiswa Okuthuthukisiwe:
I-HPMC inikela emandleni okubopha ama-adhesives we-tile ngokwenza ngcono ukuthintana phakathi kwe-adhesive ne-substrate.
Izakhiwo zayo zokugcina amanzi ziqinisekisa i-hydration eyanele yezinto zika-cementitious, ezikhuthaza ukuphulukiswa okufanele nokunamathela.
Ukwengeza, i-HPMC ingashintsha i-microstructure ye-adhesive, ithuthukise izakhiwo zayo zemishini namandla okunamathela.
Ukumelana ne-Sag:
Imvelo ye-pseudoplastic ye-HPMC idlulisela ukuziphatha kwe-thixotropic kuma-adhesive tile nama-grouts.
Thixotropy ibhekisela endaweni yokuba ne-viscous encane ngaphansi kokucindezeleka kwe-shear nokubuyela ku-viscosity ephakeme lapho ukucindezeleka kususwa.
Lokhu kuziphatha kwe-thixotropic kuthuthukisa ukumelana ne-sag phakathi nokufakwa okuqondile, kuvimbele okunamathelayo noma i-grout kusukela ekusheleleni phansi kwe-substrate ngaphambi kokwelapha.
Ukuqina nokusebenza:
I-HPMC ithuthukisa ukuqina nokusebenza kwezinamathiselo zamathayela nama-grouts ngokunikeza ukumelana kwamanzi okuthuthukisiwe kanye nokuncipha kokuncipha.
Izakhiwo zayo zokugcina amanzi zinciphisa ingozi yokoma ngaphambi kwesikhathi kanye nokuqhekeka kokuncipha, okuholela ekufakweni okuqinile nokuthatha isikhathi eside.
I-HPMC ingaba nomthelela ekwakhekeni kwama-microstructures aminyene futhi afanayo, ithuthukise ngokwengeziwe ukumelana nokungena komswakama kanye nokucindezeleka kwemishini.
IHydroxypropyl Methylcellulose (HPMC) idlala indima ebalulekile ekunamathiseleni amathayela nama-grouts ngokuthuthukisa ukusebenza kwawo, amandla okubopha, ukumelana nokuntenga, nokuqina. Izakhiwo zayo zokugcina amanzi, kuhlanganiswe nemiphumela yayo ye-rheological, ikwenza kube isengezo esibalulekile sokufeza ukusebenza kahle kanye nekhwalithi ekufakweni kwamathayili.
Isikhathi sokuthumela: May-24-2024