IHydroxypropyl Methylcellulose (HPMC), njenge-poly-soluble polymer compound, isetshenziswa kabanzi ekuthuthukisweni kwezinto zokwenziwa kosimende. Njengesengezo esibalulekile, singathuthukisa kakhulu izakhiwo zomzimba nezamakhemikhali zezinto zokwenziwa kosimende, ikakhulukazi maqondana nokusebenza, ubisi, ukunamathela nokuqina kwezinto zokuqinisa.
1. Thuthukisa uketshezi lwezinto zokwenziwa kosimende
Ukunameka ngosimende kudinga uketshezi oluhle ngesikhathi sokwakha ukuze kuthulwe kahle ekubumbeni bese kugcwalisa amajamo ayinkimbinkimbi. Ngemuva kokungeza i-hydroxypropyllylyly, unamathisela usimende ungagcina uketshezi oluhle ngenxa yomphumela wawo omuhle kakhulu. Ngesikhathi sokusebenzisa, i-HPMC ingathuthukisa uketshezi ngokushintsha i-viscosing ye-passe, ukuze unamathisele isikhathi eside futhi angathambekele ekuhlukaniseni abasebenzi bezokwakha ukuze basebenze.
2. Thuthukisa ukunamathela kwezinto zokwenziwa kosimende
Ukunamathela kwezinto zokwenziwa kosimende kubalulekile ekunciphiseni kwawo kanye nokwenza ngcono amandla. I-HPMC iyingxenye ye-polymer enencibilike enamanzi enenombolo enkulu yamaqembu e-hydrophilic esakhiweni sayo samangqamuzana, esikwenza sikwazi ukusebenzisana ngokuqinile nezinhlayiya zensimbi nakwamanye ama-filler ukwakha isakhiwo senethiwekhi esizinzile. Lo mphumela awukwazi ukwenza ngcono ukusebenza kokusebenza kwesibopho phakathi kosimende kanye ne-substrate, kepha futhi uthuthukise ukumelana nokuqhekeka kanye nokuphikiswa kwezinto ezisetshenziselwa u-clemende nokwenza ngcono ukuqina kwazo. Ucwaningo lukhombisile ukuthi izinto ezenzelwe usimende ngokungezwa kwe-HPMC zinganciphisa ngempumelelo ukuqhekeka, ukukhonkotha nokuhlunga, ngaleyo ndlela kwandise impilo yenkonzo yezinto ezibonakalayo.
I-3. Thuthukisa ukungapheleli kwezinto zokwenziwa kosimende
Ukungaphambi kokungaphambi kwezinto zokwenziwa kosimende kungenye yezinkomba ezibalulekile ezithinta ukuqina kwazo. Ukwethulwa kwe-HPMC kungathuthukisa i-MicrossCruction yezinto zokwenziwa komoya, kwakha isakhiwo senethiwekhi esiminyene, ngaleyo ndlela sinciphise i-poporia ethangeni likasimende. Ukuncishiswa kwe-porosity kuthuthukisa ngokuqondile nokungabonakali kwezinto zokwenziwa kosimende. Ucwaningo lukhombisile ukuthi ukwengeza inani elifanele le-HPMC lingavikela ngempumelelo izinto ezisuselwa kuso usinga ngokusetshenziswa kwamanzi ngesikhathi sesikhathi eside, futhi ngaleyo ndlela zithuthukise ukusebenza kwamanzi kwazo, futhi ngaleyo ndlela kuthuthukise ukusebenza kwamanzi kwaze kwakhiwa.
4. Ukubambezela inqubo ye-hydration ka usimende
Inqubo ye-hydration ye-CEAND iyinqubo eyinkimbinkimbi yokusabela kwamakhemikhali. Emkhiqizweni nokwakhiwa kwezinto zokwenziwa ngokongisi, izinga lokuphendula kwe-hydration linomthelela oqondile ekusebenzeni kokugcina. Ukungezwa kwe-HPMC kungabambezela inqubo ye-hydration yo usimende ngokushintsha i-viscosing kasimende unamathisele. I-HPMC inganweba ngempumelelo isikhathi sokusebenza futhi ivikele unamathisela usimende unamathisela kusuka ekuqinisekiseni ngokushesha okukhulu. Lesi sici silungele ikakhulukazi izinto ezisuselwa kumakhonkolo ezidinga umsebenzi wesikhathi eside, ezingathuthukisa ukuguquguquka kokwakhiwa nokusebenza kwezinto zokwakha.
I-5. Ukuthuthukisa ukumelana kweqhwa kwe-freeze-shu
Ezindaweni ezibandayo, izinto zokwenza ukhula zivame ukuvezwa imijikelezo ye-freeze-thaw, ezingaholela ekunciphiseni ngamandla wezinto zokwakha kanye nomonakalo wesakhiwo. Ukungezwa kwe-HPMC ezintweni ezisetshenziselwa u-Cement-based kusiza ukuthuthukisa ukumelana kwazo kwe-free-thaw. Ngokunciphisa i-porolity ezintweni ezisetshenziselwa ukhula, i-hpmc inganciphisa ngempumelelo ingcindezi yokunwebeka lapho iqhwa ngezinto zokwenziwa kokhonkolo, ngaleyo ndlela yenza ngcono ukumelana kweqhwa kwe-free-thaw kwezinto zokwakha. Ucwaningo lukhombisile ukuthi lapho inani le-HPMC elingeziwe kufanelekile, ukumelana kweqhwa kweqhwa kwezinto zokwenziwa kosimende kuthuthukiswa kakhulu, ikakhulukazi ezakhiweni ezindaweni ezinomswakama nezibandayo.
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Lapho kusetshenziswa izinto zokwenza ukhula ezindaweni zokushisa eziphakeme, zivame ukubhekana nezinkinga ezinjengokunwebeka okushisayo kanye nokuncipha, futhi kunciphise izakhiwo ezibonakalayo. Ukungezwa kwe-HPMC kungathuthukisa ukumelana okushisa okuphezulu kwezinto zokwenziwa ngosimende. Njengoba i-HPMC inokuqina okuhle okushisayo, ingagcina isakhiwo sayo samakhemikhali kanye nezakhiwo zayo ezibonakalayo emazingeni okushisa aphezulu, ngaleyo ndlela ithuthukise amandla nokuqina kwezinto zokwenziwa kokhonkolo ezindaweni eziphakeme zokushisa.
7. Thuthukisa ukusebenza kokwakha
Ukusebenza kokwakha kungenye yezindlela ezibalulekile zokulinganisa ikhwalithi yezinto zokwenziwa kosimende. I-HPMC ingathuthukisa kakhulu ukusebenza kwezinto zokwenziwa kokhonkolo futhi ivikele izinkinga ezifana nokuhlukaniswa kanye nekhasi le-peater ngesikhathi sokwakha. Lapho ufaka isicelo, ukulungiswa kokwenza usimende izinto zokwenza usimende, ukwethulwa kwe-HPMC kwenza lokho okuqukethwe kube ngcono ngokhula kanye nokuvulwa kwesikhathi esizayo, ukuze kunciphise izinkinga ezibangelwa ukusatshalaliswa kwezinto ezingalingani ngesikhathi sokwakha.
Njengesengezo esibalulekile sezinto zokwenziwa kosimende, i-hydroxypropyl methylcellulose ingathuthukisa kakhulu izakhiwo ezahlukahlukene zezinto zokwakha. I-HPMC ibonisa ukusebenza okuhle kakhulu ekusetshenzisweni kwezinto zokwenziwa kosekhukhwini ngokwenza ngcono i-fluidity, adhesion, okungapheli, ukumelana kwe-freeze-thaw kanye nokulibazisa kwenqubo yokuzikhethela, ikakhulukazi ekuthuthukiseni ukusebenza kokwakha nokuqina. Ngakho-ke, emisebenzini yanamuhla yokwakha, ukusetshenziswa kwe-hydroxypropyllylylylylyky methylcellulose kunethemba elibanzi futhi kudlala indima enhle ekuthuthukiseni ukusebenza okuphelele kwezinto zokwakha.
Isikhathi sePosi: Feb-19-2025