Umgomo osebenzayo we-hydroxypropyllll methylcellulose ku-wonga

I-Hydroxypropyl methylcellulose (HPMC)Ikhompiyutha esetshenziswa ngamanzi esetshenziswa kabanzi embonini yezokwakha, ikakhulukazi ngodaka olususelwa ku-cyment, udaka olususelwa ku-gypsum kanye nokunamathela. Njengesengezo sodaka, i-HPMC ingathuthukisa ukusebenza kokwakha, ithuthukise ukuwenza, ukunamathela, ukugcinwa kwamanzi kanye nokuvimbela amanzi ngodaka, ngaleyo ndlela kuthuthukise ikhwalithi ephelele yodaka.

1. Izici eziyisisekelo ze-HPMC

I-HPMC itholwa ikakhulukazi ngokuguqulwa kwe-cellulose, futhi ine-soubelity enhle yamanzi, ukuqina, ukushaya amafilimu, ukugcoba nokuqina. Izakhiwo zayo ezibalulekile ezibonakalayo zifaka:

I-Solubinity yamanzi: Ingachithwa kumanzi abandayo noma ashisayo ukwakha isixazululo esibonakalayo esibonakalayo noma esishisayo.
Umphumela Wokuqina
Ukugcinwa kwamanzi: I-HPMC ingadonsa amanzi nokuvuvukala, futhi idlale indima ekugcinweni kwamanzi ku-gunda ukuvikela amanzi ekulahlekelweni ngokushesha okukhulu.
Izakhiwo ze-Rheological: Ine-Thixotropy enhle, esiza ukuthuthukisa ukusebenza kosuku lodaka.

2. Iqhaza eliphambili le-HPMC kuDinga

Iqhaza le-HPMC kudaka libonakaliswa ikakhulukazi ezintweni ezilandelayo:

2.1 Ukuthuthukisa Ukugcinwa kwamanzi kodaka

Ngesikhathi senqubo yokwakha kasimende, uma amanzi evele evele ngokushesha noma emunwa ngokweqile ngesisekelo, kuzoholela ekuphendukeni kwe-hydration enganele futhi athinte ukuthuthukiswa kwamandla. I-HPMC yakha isakhiwo se-mesh efanayo ngodaka nge-hydrophicility yayo kanye nokufakwa kwamanzi kanye nekhono lokunwebeka, ukunciphisa ukulahleka kwamanzi, ngaleyo ndlela kunwebe isikhathi esivulekile sodaka nokwenza ngcono ukuvumelana nezimo zokwakha.

2.2 Umphumela Wokuqina, Ukwenza ngcono Ukusetshenziswa kodaka

I-HPMC inomphumela omuhle wokuqina, ongakhulisa ukubonana kodaka, yenza udaka abe ngcono ngopulasitiki, futhi avimbele udaka oluvela ekuhlukaniseleni, ukuhlukaniswa kwamanzi kanye nokuphuma kwamanzi. Ngasikhathi sinye, ukuqina okufanele kungathuthukisa ukwakhiwa kodaka, okwenza kube lula ukufaka isicelo kanye nezinga ngesikhathi sokwakha, nokwenza ngcono ukusebenza kokwakha.

2.3 Thuthukisa ukubopha futhi uthuthukise ukunamathela kodaka

Kuzinhlelo zokusebenza ezinjenge-tile adhesive, udaka lwe-masonry nodaka ngodaka, amandla okubopha ngodaka kubalulekile. I-HPMC yakha i-Uniform Pelmer Film phakathi kwesisekelo kanye nokugoqa ngesenzo esakha amafilimu, esithuthukisa amandla okubopha ngodaka ku-substrestate, ngaleyo ndlela kunciphise ubungozi bokuqhekeka kodaka nokuwa.

2.4 Thuthukisa ukusebenza kokwakha futhi wehlise i-sag

Ukuze uthole ukwakhiwa komhlaba okuqondile (okufana nokwakhiwa kodonga noma ukwakhiwa okunamathela kodonga), udaka uthambekele ekusetshenzisweni noma ukushelela ngenxa yesisindo sawo. I-HPMC inyusa ukucindezelwa kwesivuno kanye ne-anti-sag yodaka, ukuze udaka lukwazi ukunamathela ebusweni besisekelo lapho kwakhiwa mpo, ngaleyo ndlela kuthuthukiswe ukuqina kokwakha.

2.5 Ukuthuthukisa ukumelana nokuqhekeka kanye nokwenza ngcono ukuqina

Udaka uthambekele ekuqhekekeni ngenxa ye-shrinkage ngesikhathi senqubo enzima, ethinta ikhwalithi yephrojekthi. I-HPMC ingaguqula ukucindezela kwangaphakathi kodaka futhi kunciphise izinga lokushwabana. Ngasikhathi sinye, ngokwenza ngcono ukuguquguquka kodaka, kunokumelana okungcono kokuqhekeka ngaphansi kwezinguquko zokushisa noma ukucindezela kwangaphandle, ngaleyo ndlela kuthuthukise ukuqina.

2.6 Thinda isikhathi sokufaka udaka

I-HPMC ithinta isikhathi sokusetha sikadaka ngokulungisa ijubane lokuphendula kwe-cydy hydration. Inani elifanele le-HPMC linganweba isikhathi sokwakha sodaka futhi siqinisekise isikhathi esinele sokulungiswa ngesikhathi senqubo yokwakha, kepha ukusetshenziswa ngokweqile kunganweba isikhathi sephrojekthi, ngakho-ke umthamo kufanele ulawule kahle.

3. Umphumela wethamo le-HPMC ekusebenzeni kodaka

Umthamo we-HPMC kuDinar ngokuvamile uphansi, imvamisa phakathi kuka-0,1% no-0.5%. Umthamo othize uncike ohlotsheni lwezidingo zodaka kanye nokwakha:

Umthamo ophansi (≤0.1%): Kungathuthukisa ukugcinwa kwamanzi futhi kuthuthukise kancane ukusebenziseka kodaka, kepha umphumela wokuqina ubuthakathaka.

Umthamo ophakathi nendawo (0.1% ~ 0.3%): Kuthuthukisa kakhulu ukugcinwa kwamanzi, ukunamathela kanye nekhono lokulwa nodaka ngodaka kanye nokwenza ngcono ukusebenza kokwakha.

Umthamo ophakeme (≥0.3%): Kuzokhulisa kakhulu ukubonakala kodaka, kepha kungathinta uketshezi, ukwelula isikhathi sokusetha, futhi akunakuthandeka ekwakheni.

Njengesengezo esibalulekile sodaka,I-HPMCIdlala indima ebalulekile ekwenzeni ngcono ukugcinwa kwamanzi, ukwenza ngcono ukusebenza kokwakha, ukuthuthukisa ukunqwabelana nokumelana nokuqhekeka. Ukungezwa okunengqondo kwe-HPMC kungathuthukisa kakhulu ukusebenza okuphelele kodaka nokwenza ngcono ikhwalithi yephrojekthi. Ngasikhathi sinye, umthamo udinga ukulawulwa ukuze uvikele imiphumela emibi ekubekeni uketshezi lwesikhathi nokwakha. Ngokuzayo, ngokuthuthuka okuqhubekayo kwemboni yezokwakha, amathemba wesicelo se-HPMC ezintweni ezintsha zokwakha eziluhlaza azobanzi.