Izici ezishisayo nezemishini: isifundo
Kubonisa ukuthi i-HPMC ingathuthukisa izakhiwo ezishisayo nezomshini zodaka lokunamathisela. Ngokungeza ukugxila okuhlukile kwe-HPMC (0.015%, 0.030%, 0.045%, no-0.060%), abacwaningi bathola ukuthi izinto ezilula zingakhiqizwa ngokunciphisa isisindo se-11.76% ngenxa ye-porosity ephezulu ebangelwa i-HPMC. Le porosity ephezulu isiza ekufakeni okushisayo, kwehlise ukusebenza kukagesi kokufika ku-30% kuyilapho igcina ukushisa okungaguquki okucishe kube ngu-49 W lapho ingaphansi kokushisa okufanayo. Ukumelana nokudluliswa kokushisa ngephaneli kuye kwahluka ngenani le-HPMC elingeziwe, ngokuhlanganiswa okuphezulu kakhulu kwesengezo okuholele ekukhuphukeni kwama-32.6% kokumelana nokushisa uma kuqhathaniswa nengxube yereferensi.
Ukugcinwa kwamanzi, ukusebenza namandla: olunye ucwaningo
Kutholwe ukuthi i-HPMC ingathuthukisa kakhulu ukugcinwa kwamanzi, ukubumbana nokumelana nokucwila kodaka, futhi ithuthukise ngokuphawulekayo amandla okuqina namandla okubopha kodaka. Ngesikhathi esifanayo, i-HPMC ingavimbela ngokuphumelelayo ukwakheka kwemifantu yepulasitiki odakeni futhi inciphise inkomba yokuqhekeka kwepulasitiki. Ukugcinwa kwamanzi kodaka kukhuphuka njengoba i-viscosity ye-HPMC ikhula. Uma i-viscosity ye-HPMC idlula 40000 mPa·s, ukugcinwa kwamanzi akusakhuphuki kakhulu.
Indlela yokuhlola i-viscosity: Lapho ufunda indlela yokuhlola i-viscosity ye-high-viscosity hydroxypropyl methylcellulose
, ithole ukuthi i-HPMC inokusabalalisa okuhle, i-emulsification, ukuqina, ukubopha, ukugcinwa kwamanzi kanye nezindawo zokugcina iglue. Lezi zakhiwo zenza i-HPMC isetshenziswe kabanzi embonini yezokwakha.
Ukuzinza kwevolumu: Ucwaningo ngomphumela womthamo we-HPMC ekuzinzeni kwevolumu yokuqala ye-Portland usimende-aluminate usimende-gypsum ternary composite self-leveling mortar
Kubonisa ukuthi i-HPMC inomthelela omkhulu ekusebenzeni kodaka lokuzilinganisa. Ngemva kokufaka i-HPMC, ukusebenza kodaka lokuzilinganisa njengokuphuma kwegazi kanye nokuhlukaniswa ngokwehlukana kuba ngcono kakhulu. Kodwa-ke, umthamo oweqile awuhambisani ne-fluidity of self-leveling mortar. Umthamo ophelele ngu-0.025%~0.05%. Ngesikhathi esifanayo, njengoba okuqukethwe kwe-HPMC kwanda, amandla acindezelayo namandla aguquguqukayo odaka oluzilinganisa luyancipha lube ngamazinga ahlukahlukene.
Umthelela emandleni emizimba eluhlaza yobumba eyenziwe ngepulasitiki: ukuhlolwa
Umthelela wokuqukethwe okuhlukile kwe-HPMC emandleni aguquguqukayo emizimba eluhlaza ye-ceramic wacwaningwa, futhi kwatholakala ukuthi amandla okuguquguquka aqale anda futhi ancipha ngokunyuka kokuqukethwe kwe-HPMC. Lapho inani elingeziwe le-HPMC lingama-25%, amandla omzimba aluhlaza ayephezulu kakhulu ku-7.5 MPa.
Ukusebenza kodaka lwengxube eyomile: ucwaningo
Kutholwe ukuthi amanani ahlukene nama-viscosity e-HPMC anemiphumela ebalulekile ekusebenzeni kokusebenza kanye nezakhiwo zemishini zodaka oluxutshwe okomile. I-HPMC inamandla okugcina amanzi nokujiya. Lapho umthamo ungaphezu kuka-0.6%, uketshezi lodaka luyancipha; lapho umthamo ungu-0.4%, izinga lokugcinwa kwamanzi odaka lingafinyelela ku-100%. Nokho, i-HPMC iwanciphisa kakhulu amandla, ngama-75%.
Imithelela kumamiksi agaywe kabusha afakwe usimende azinzile ajule ngokugcwele: ucwaningo
Kutholwe ukuthi i-HPMC izonciphisa amandla aguquguqukayo kanye nokucindezela amasampula odaka lukasimende ngemuva kokufakwa kukasimende ngenxa yomphumela wokungenisa umoya. Kodwa-ke, usimende ufakwe emanzini ekuhlakazweni kwe-HPMC encibilikiswe emanzini. Uma kuqhathaniswa nosimende ofakwa amanzi kuqala bese uxutshwa ne-HPMC, amandla aguquguqukayo nawokucindezela amasampula odaka lukasimende ayakhula.
Le datha yokuhlola nemiphumela yocwaningo ibonisa ukuthi i-HPMC inomphumela omuhle ekuthuthukiseni ukugcinwa kwamanzi odaka, ukuthuthukisa ukusebenza kahle, nokuthuthukisa ukusebenza okushisayo, kodwa ingase ibe nomthelela emandleni nasekuzinzeni kwevolumu yodaka. Ngakho-ke, ekusetshenzisweni okungokoqobo, umthamo kanye nokucaciswa kwe-HPMC kudingeka kukhethwe ngokunengqondo ngokusekelwe ezidingweni ezithile zobunjiniyela nezimo zemvelo ukuze kuzuzwe ukusebenza okuhle kakhulu kodaka.
Isikhathi sokuthumela: Oct-29-2024