I-Hydroxyethyl methylcellulose (HEMC), njengengxube ye-polymer encibilikayo evame ukusetshenziswa emanzini, inezinzuzo eziphawulekayo ekuhlanganiseni okusekelwe kusimende. Ukwakheka kwayo kwamakhemikhali kuyivumela ukuthi idlale indima ebalulekile ekuthuthukiseni ukusebenza kwezingubo ezisekelwe usimende.
1. Thuthukisa ukusebenza kokwakhiwa
Ngesikhathi sokwakhiwa kwezingubo ezisekelwe kusimende, uketshezi kanye nokusebenza kahle yizici ezibalulekile ezithinta ikhwalithi yokumboza nokusebenza kahle kokwakhiwa. I-HEMC ingathuthukisa kakhulu ukusebenza kokwakhiwa kwezingubo ngokwandisa i-viscosity nokugcinwa kwamanzi kwezingubo. Ukusebenza okuqondile kuthi:
Thuthukisa ukusebenza kopende: I-HEMC ingakhuphula ukuvumelana kopende, ikwenze kube lula ukulawula upende ngesikhathi senqubo yokumboza nokugwema izinkinga ezifana nokugeleza nokwehla kopende.
Thuthukisa ukugcinwa kwamanzi kwezingubo zokumboza: I-HEMC ingathuthukisa ukugcinwa kwamanzi okunamathelayo okusekelwe kusimende, inciphise izinga lokuhwamuka kwamanzi, futhi iqinisekise ukufana nokuzinza kwe-coating.
Lesi sici sifaneleka ikakhulukazi izimo zokwakha ezidinga ukusebenza kwesikhathi eside. Ingaqinisekisa ukuthi i-cement slurry ngeke yome ngaphambi kwesikhathi ngesikhathi sokwakhiwa kwe-coating, ngaleyo ndlela iqinisekise ikhwalithi yokugqoka.
2. Nweba amahora okuvula
Isikhathi esivulekile sikapende osekelwe usimende yisikhathi emva kokuba upende usetshenzisiwe ukuthi usengashintshwa noma uqedwe. Njenge-thickener ephumelelayo, i-HEMC inganweba isikhathi sokuvula sezingubo ezisekelwe kusimende, ngaleyo ndlela ikhulise ukuguquguquka kokwakhiwa. Ngemuva kokwengeza i-HEMC kuma-coatings asekelwe kusimende, izisebenzi zokwakha zingaba nesikhathi esengeziwe sokulungisa ukugqoka nokusika ukuze kugwenywe izinkinga ezibangelwa ukuphulukiswa okusheshayo kokugqoka.
3. Thuthukisa ukunamathela kopende
I-HEMC ingathuthukisa ngokuphumelelayo ukunamathela phakathi kwe-coating kanye ne-substrate emigqeni esekwe usimende, ikakhulukazi ezindaweni ezibushelelezi noma ezinzima-ukubopha i-substrate (njengensimbi, ingilazi, njll.). Ukwengezwa kwe-HEMC kungathuthukisa kakhulu ukunamathela kokugqoka. Gxila. Ngale ndlela, hhayi kuphela ukuqina kokugqoka okuthuthukisiwe, kodwa futhi ikhono lokulwa nokuwa kwe-coating liyathuthukiswa.
4. Thuthukisa ukumelana nokuqhekeka kwezingubo
Izembatho ezenziwe ngosimende zijwayele ukuqhekeka phakathi nenqubo yokwelapha, ikakhulukazi ezimbotsheni eziwugqinsi noma ezindaweni ezishisa kakhulu. I-HEMC ingathuthukisa ukunwebeka kwezingubo ngesakhiwo sayo esiyingqayizivele samangqamuzana, inciphise ukuncipha kwevolumu okubangelwa ukuguquguquka kwamanzi, futhi inciphise ukuvela kwemifantu. I-HEMC ingaphinde ihlanganyele nezinye izakhi kusimende ukuze yenze isakhiwo senethiwekhi esizinzile, sithuthukise ngokwengeziwe ukuqina nokumelana nokuqhekeka kwe-coating.
5. Thuthukisa ukumelana kwamanzi kwezingubo
Ukumelana namanzi kwezingubo ezisekelwe kusimende kubalulekile ekwakheni ingaphandle, amagumbi angaphansi, nezinye izindawo ezichayeke kumswakama noma amanzi. Izakhiwo zokugcina amanzi ze-HEMC zinganciphisa ngokuphumelelayo ukulahlekelwa kwamanzi emigqonyeni esekwe usimende, ngaleyo ndlela kuthuthukiswe ukuphikiswa kwamanzi kwe-coating. Ngaphezu kwalokho, i-HEMC ingakwazi ukuvumelanisa nezithako kusimende ukuze kuthuthukiswe ikhono eliphelele lokulwa nokungena kwe-coating, ngaleyo ndlela ithuthukise ukusebenza okungangeni kwamanzi kwe-coating.
6. Thuthukisa i-rheology yezingubo zokugqoka
Ukusetshenziswa kwe-HEMC kwezembatho esekwe usimende kungathuthukisa i-rheology ye-coating, kuyinikeze uketshezi olungcono nokulinganisa izakhiwo. Ngemva kokwengeza i-HEMC emigqonyeni esekwe usimende, uketshezi lwe-coating ngesikhathi senqubo yokumboza kuthuthukisiwe, futhi indawo yokumboza ingenza ukugqoka okubushelelezi nokufana okufanayo, ukugwema ukukhubazeka kokugqoka okubangelwa i-viscosity yokugqoka ngokweqile noma engalingani.
7. Ukusebenza kwemvelo
Njengengxenye yemvelo ye-polysaccharide,I-HEMC inokubola okuhle kwemvelo ngakho-ke inokusebenza okuhle kwemvelo. Ingangena esikhundleni sezinye izithasiselo zamakhemikhali zokwenziwa futhi inciphise izinto eziyingozi ezimbotsheni, ngaleyo ndlela ithuthukise ukusebenza kwemvelo kwezingubo ezisekelwe usimende. Ngezingubo zesimanje zezakhiwo, ukuvikelwa kwemvelo sekugxilwe emakethe nemithethonqubo, ngakho-ke ukusetshenziswa kwe-HEMC kudlala indima enhle ekuthuthukiseni ukuvikelwa kwemvelo kwezingubo.
8. Thuthukisa ukuqina kopende
Ukwengezwa kwe-HEMC kungathuthukisa ukumelana nokugqoka, ukumelana nesimo sezulu kanye nokumelana kwe-UV kwezingubo ezisekelwe kusimende. Inganciphisa izinkinga ezinjengokufiphala kanye nokuqhekeka kwezithako ezisekelwe kusimende okubangelwa izici zemvelo zangaphandle ezifana nokukhanya kwelanga nokuguguleka kwemvula, futhi ithuthukise ukuqina kwento enamathelayo. Le nzuzo ifaneleka ngokukhethekile ekwakheni izindonga zodonga zangaphandle ezivezwa endaweni yangaphandle isikhathi eside futhi zingandisa impilo yenkonzo yokugqoka.
9. Thuthukisa izakhiwo ze-antibacterial zezingubo ezisekelwe kusimende
Njengoba izidingo zezempilo nokuphepha zezinto zokwakha ziqhubeka nokwanda, izakhiwo ze-antimicrobial ezimbotsheni ziba umbandela obalulekile. I-HEMC ngokwayo inezici ezithile zokulwa namagciwane futhi ingavimbela ngokuphumelelayo ukukhula kwesikhunta namagciwane endaweni yokumboza. Endaweni enomswakama ophezulu, ukungezwa kwe-HEMC kungasiza ukugqoka ukumelana nokuguguleka kwesikhunta kanye nesikhunta futhi kuthuthukise ukuhlanzeka nokuqina kokugqoka.
10. Thuthukisa ukuphepha kokwakhiwa kwezingubo ezisekelwe kusimende
Njengekhemikhali engenabuthi futhi engacasuli, i-HEMC inokuphepha okuphezulu. Ngesikhathi sokwakha,I-HEMCayilimazi kangako umzimba womuntu futhi inciphisa umthelela empilweni yabasebenzi bokwakha. Ngaphezu kwalokho, i-HEMC nayo inganciphisa ngempumelelo uthuli olukhiqizwa ngesikhathi sokwakha, ngaleyo ndlela ithuthukise izinga lomoya lendawo yokwakha.
Ukusetshenziswa kwei-hydroxyethyl methylcelluloseekugqokeni okusekelwe kusimende kunezinzuzo eziningi. Akukwazi nje ukuthuthukisa ngokuphawulekayo ukusebenza kokwakhiwa kwe-coating, ukwandisa isikhathi sokuvula, nokuthuthukisa ukunamathela, kodwa futhi kuthuthukise ukumelana nokuqhekeka, ukumelana kwamanzi, i-rheology nokuqina kokugqoka. Ngaphezu kwalokho, i-HEMC, njengesengezo esinobungani bemvelo futhi esingenabuthi, ayigcini nje ukuthuthukisa ukusebenza kokugqoka, kodwa futhi kusiza ukunciphisa umthwalo wemvelo. Ngakho-ke, i-HEMC isetshenziswe kabanzi emigqonyeni yanamuhla esekwe kusimende futhi isibe yingxenye ebalulekile ekuthuthukiseni ikhwalithi yokuhlanganisa nokusebenza kahle kokwakhiwa.
Isikhathi sokuthumela: Nov-11-2024