Ukusetshenziswa kwe-HPMC odakeni lukasimende

Isingeniso

IHydroxypropyl Methylcellulose (HPMC) iyi-ether engeyona ionic cellulose etholakala ku-cellulose yemvelo. Sekuyisengezo esibalulekile embonini yezokwakha, ikakhulukazi ekwakhiweni kodaka lukasimende. I-HPMC ithuthukisa izakhiwo zodaka, okunomthelela ekusebenzeni okuthuthukisiwe, ukugcinwa kwamanzi, ukunamathela, namandla emishini.

Ukwakheka Nezakhiwo ze-HPMC

I-HPMC ihlanganiswa ngokufakwa kwe-cellulose nge-methyl chloride ne-propylene oxide. I-polymer ewumphumela ibonakala ngokuncibilika kwayo okuphezulu kwamanzi, izakhiwo zokuguqula i-viscosity, namandla okwenza ifilimu. Lezi zici zenza i-HPMC ibe isithasiselo esifanelekile sokushintsha izakhiwo ze-rheological zezinto ezisekelwe kusimende.

Izinzuzo ze-HPMC ku-Cement Mortar

1. Ukusebenza Okuthuthukisiwe

Enye yezinzuzo eziyinhloko ze-HPMC odakeni lukasimende yikhono layo lokuthuthukisa ukusebenza. I-HPMC isebenza njengesithambisi phakathi kwezinhlayiya zikasimende, inciphisa ukungqubuzana futhi ivumele ukusebenza kahle. Lokhu kusebenza okuthuthukisiwe kusiza ukusakazeka kalula kanye nokulingana kodaka, okubalulekile ukuze kuzuzwe ukufana okufanayo.

2. Ukugcina Amanzi Okuthuthukisiwe

I-HPMC ithuthukisa kakhulu amandla okugcina amanzi odaka lukasimende. Ukugcinwa kwamanzi kubalulekile ngesikhathi senqubo yokwelapha njengoba kuqinisekisa ukugeleza okwanele kwezinhlayiya zikasimende, okuholela ekuthuthukisweni okungcono kwamandla. Ngokugcina amanzi, i-HPMC ivimbela ukomiswa ngaphambi kwesikhathi futhi inciphisa ingozi yokuqhekeka nokushwabana odongeni.

3. Ukunamathela Okungeziwe

Ukunamathela kubalulekile ukuze kuqine futhi kusebenze udaka lukasimende. I-HPMC ithuthukisa izici zokunamathisela zodaka ngokuthuthukisa amandla ayo okubopha kuma-substrates ahlukahlukene, njengezitini, amatshe, nezindawo zikakhonkolo. Lokhu kunamathela okwandayo kuqinisekisa ukuthi udaka luhlala luqinile ngaphansi kwengcindezi kanye nezimo zemvelo.

4. Amandla Emishini

Ukufakwa kwe-HPMC odakeni lukasimende kunomthelela emandleni ayo okusebenza. Ngokwenza kahle inqubo ye-hydration kanye nokwenza ngcono i-microstructure yodaka, i-HPMC isiza ukuzuza amandla aphezulu okucindezela nokuguquguquka. Lesi sithuthukisi sibalulekile ezinhlelweni zokusebenza lapho umthamo wokuthwala umthwalo uyinkinga.

Izindlela Zesenzo se-HPMC ku-Cement Mortar

1. Ukuguqulwa Kwe-Viscosity

I-HPMC ilungisa i-viscosity yengxube yodaka, iyenze ihlangane kakhudlwana futhi kube lula ukuyiphatha. Amaketanga e-polymer e-HPMC asebenzisana nama-molecule wamanzi, akhe isakhiwo esifana nejeli esikhulisa i-viscosity yesigaba samanzi. Lo mphumela we-gelation usiza ekugcineni i-homogeneity yodaka futhi uvimbele ukuhlukaniswa kwezingxenye.

2. Ukugcina Amanzi

Imvelo ye-hydrophilic ye-HPMC iyivumela ukuthi imunce futhi igcine amanani abalulekile wamanzi. Uma yengezwe odakeni lukasimende, i-HPMC idala umgoqo onciphisa izinga lokuhwamuka kwamanzi. Lokhu kuba khona kwamanzi isikhathi eside kuqinisekisa ukugeleza okuqhubekayo kwezinhlayiya zikasimende, okubalulekile ekuthuthukiseni amandla nokuqina odakeni.

3. Ukwakhiwa Kwefilimu

Lapho yomiswa, i-HPMC yenza ifilimu eqhubekayo, eguquguqukayo ngaphakathi kwe-matrix yodaka. Le filimu ithuthukisa ukuhlangana phakathi kokunamathisela usimende nama-aggregate, ithuthukise ubuqotho buphelele bodaka. Le filimu iphinde ibe nomthelela ekutheni udaka lukwazi ukumelana nokungena kwamanzi kanye nesimo sezulu.

Ukucatshangelwa Okusebenzayo Ekusetshenzisweni kwe-HPMC

1. Umthamo

Umthamo ophelele we-HPMC odakeni lukasimende uyahlukahluka kuye ngohlelo oluthile kanye nezakhiwo ezifiswayo. Ngokuvamile, umthamo usukela ku-0.1% kuya ku-0.5% ngesisindo sikasimende. Imithamo ephakeme ingase idingeke ezinhlelweni ezikhethekile, ezifana nezisimende ezizilinganisa ngokwazo noma izinto zokunamathisela zamathayili.

2. Izinqubo Zokuxuba

Izinqubo zokuxuba ezifanele zibalulekile ukuze kuqinisekiswe ukusatshalaliswa okufanayo kwe-HPMC odakeni. Kunconywa ukuxuba okomile kwe-HPMC nezinye izithako eziyimpuphu ngaphambi kokwengeza amanzi. Lokhu kuqinisekisa ukuthi i-polymer ihlakazeke ngokulinganayo futhi isebenze lapho ithintana namanzi.

3. Ukuhambisana Nezinye Izithasiselo

I-HPMC ihambisana nohlu olubanzi lwezinye izithasiselo ezisetshenziswa odakeni lukasimende, njengama-superplasticizers, ama-accelerator, nama-retarders. Kodwa-ke, kubalulekile ukwenza izivivinyo zokuhambisana ukuze kuqinisekiswe ukuthi imiphumela ehlanganisiwe yezithasiselo eziningi ayithinti kabi ukusebenza kodaka.

Izicelo ze-HPMC Ezinhlotsheni Ezihlukene Zezinsimbi Zesimende

1. Izinamatheliso zamathayela

Kuzinto zokunamathela zamathayili, i-HPMC ithuthukisa isikhathi esivulekile, ukumelana nokushelela, namandla okunamathela. Ukugcinwa kwamanzi okuthuthukisiwe kuqinisekisa ukuthi okunamathelayo kuhlala kusebenza isikhathi eside, okuvumela ukubekwa kwamathayela okunembayo.

2. I-Render and Plaster Mortars

Ukuze unikeze nodaka, i-HPMC ihlinzeka ngokusebenza okuhle kakhulu futhi inciphisa ubungozi bokwehla. Ukunamathela okuthuthukisiwe nokugcinwa kwamanzi kunomthelela ekuqedeni okubushelelezi, okuhlala isikhathi eside.

3 Izigxobo zokuzilinganisa

Izithombo ezizilinganisa ngokwazo ziyazuza ezintweni eziguqula i-viscosity ze-HPMC, eziqinisekisa indawo efanayo, esezingeni. I-polymer isiza ukugcina i-fluidity yodaka ngenkathi ivimbela ukuhlukaniswa nokopha.

4. Lungisa Izinsimbi

Ezakhiweni zokulungisa, i-HPMC ithuthukisa ukunamathela kuma-substrates akhona futhi ithuthukise izakhiwo zemishini zezindawo ezikhandiwe. Amandla okugcina amanzi e-HPMC aqinisekisa ukwelashwa okufanele kanye nokuqina kwesikhathi eside.

I-HPMC iyisengezo esisebenza ngezindlela eziningi esithuthukisa kakhulu ukusebenza kosimende. Izinzuzo zayo, okuhlanganisa ukusebenza okuthuthukisiwe, ukugcinwa kwamanzi, ukunamathela, namandla emishini, kuyenza ibe yingxenye ebalulekile ezinhlelweni ezihlukahlukene zokwakha. Ukuqonda izindlela zesenzo se-HPMC nokucabangela izici ezingokoqobo ezifana nemithamo nokuhambisana kubalulekile ekuthuthukiseni ukusetshenziswa kwayo kumasimende osimende. Njengoba imboni yezokwakha iqhubeka nokuvela, ukusetshenziswa kwe-HPMC kungenzeka kwande, kuqhubekisele phambili intuthuko kwikhwalithi nokuqina kwezinto ezisekelwe kusimende.