I-Hydroxypropyl starch ether (HPS)futhii-cellulose etheryizithasiselo ezimbili ezivamile zamakhemikhali okwakha, ezisetshenziswa kabanzi ezintweni zokwakha, njenge-mortar, i-putty powder, izembozo, njll. Nakuba zinokufana kwezinye izakhiwo, kunomehluko omkhulu ezicini eziningi njengemithombo yezinto zokusetshenziswa, izakhiwo zamakhemikhali, izakhiwo zomzimba, imiphumela yokusetshenziswa, kanye nezindleko.
1. Imithombo yezinto ezingavuthiwe kanye nesakhiwo samakhemikhali
I-Hydroxypropyl starch ether (HPS)
I-HPS isekelwe kusitashi semvelo futhi itholakala ngokusabela kokuguqulwa kwe-etherification. Izinto zayo eziyinhloko zokusetshenziswa ummbila, ukolweni, amazambane nezinye izitshalo zemvelo. Ama-molecule esitashi akhiwa amayunithi e-glucose axhunywe yizibopho ze-α-1,4-glycosidic kanye nenani elincane lezibopho ze-α-1,6-glycosidic. Ngemva kwe-hydroxypropylation, iqembu le-hydrophilic hydroxypropyl lifakwa esakhiweni sama-molecule se-HPS, okwenza kube nokujiya okuthile, ukugcinwa kwamanzi kanye nemisebenzi yokuguqulwa.
i-cellulose ether
Ama-ether e-cellulose atholakala ku-cellulose yemvelo, njengokotini noma ukhuni. I-Cellulose yakhiwe ngamayunithi e-glucose axhunywe yizibopho ze-β-1,4-glycosidic. Ama-ether e-cellulose avamile afaka i-hydroxypropyl methylcellulose (HPMC), i-methylcellulose (MC), i-hydroxyethyl cellulose (HEC), njll. Lawa ma-compounds aletha izinto ezihlukile ngokusebenzisa ukusabela kwe-etherification futhi anokuqina okuphezulu kwamakhemikhali kanye nezakhiwo zomzimba.
2. Izakhiwo zomzimba
Izici zokusebenza ze-HPS
Ukuqina: I-HPS inomphumela omuhle wokuqina, kodwa uma iqhathaniswa ne-cellulose ether, ikhono layo lokuqina libuthakathaka kancane.
Ukugcinwa kwamanzi: I-HPS inokugcinwa kwamanzi okulinganiselwe futhi ifaneleka ezintweni zokwakha ezisezingeni eliphansi kuya kweliphakathi.
Ukusebenza Kahle: I-HPS ingathuthukisa ukusebenza kahle kwe-mortar futhi inciphise ukugoba ngesikhathi sokwakha.
Ukumelana nokushisa: I-HPS ibucayi kakhulu ekushiseni futhi ithinteka kakhulu ekushiseni okuzungezile.
Izici zokusebenza kwama-cellulose ethers
Ukuqina: I-Cellulose ether inomphumela oqinile wokuqina futhi ingakhuphula kakhulu ukujiya kwe-mortar noma i-putty.
Ukugcinwa kwamanzi: I-cellulose ether inezakhiwo ezinhle kakhulu zokugcina amanzi, ikakhulukazi ezindaweni ezinokushisa okuphezulu, ezingandisa isikhathi sokuvula kwe-mortar futhi zivimbele ukulahleka kwamanzi ngokweqile.
Ukusebenza Kahle: I-Cellulose ether inhle kakhulu ekuthuthukiseni ukusebenza kahle futhi inganciphisa ngempumelelo izinkinga ezifana nokuqhekeka kanye nokuputshwa.
Ukumelana nokushisa: I-cellulose ether iyakwazi ukuzivumelanisa nezimo nokushintsha kwezinga lokushisa kanye nokusebenza okuzinzile.
3. Imiphumela yohlelo lokusebenza
Umphumela wokusetshenziswa kwe-I-HPS
Ku-mortar eyomile, i-HPS idlala indima enkulu yokuthuthukisa ukusebenza kahle, ukuthuthukisa ukugcinwa kwamanzi, kanye nokunciphisa ukuhlukaniswa kanye nokuhlukaniswa. Iyonga futhi ifanele ukusetshenziswa ezimweni ezinezidingo zokulawula izindleko eziphezulu, njengempuphu evamile ye-wall putty yangaphakathi, i-mortar yokulinganisa phansi, njll.
Umphumela wokusetshenziswa kwe-cellulose ether
Ama-ether e-celluloseZisetshenziswa kabanzi kuma-mortar asebenza kahle kakhulu, kuma-adhesive amathayili, ezintweni ezisekelwe ku-gypsum kanye nezinhlelo zokuvikela udonga lwangaphandle. Izakhiwo zayo zokuqina eziphakeme kanye nokugcina amanzi zingathuthukisa kakhulu amandla okubopha kanye nokusebenza okulwa nokushelela kwezinto, futhi zifaneleka kakhulu kumaphrojekthi anezidingo eziphezulu zokusebenza kokwakha kanye nekhwalithi yomkhiqizo oqediwe.
4. Izindleko kanye nokuvikelwa kwemvelo
izindleko:
I-HPS inezindleko eziphansi futhi ifanele ukusetshenziswa ezimakethe ezithinta intengo. Ama-cellulose ethers abiza kakhulu, kodwa asebenza kahle kakhulu futhi asebenza kahle kumaphrojekthi okwakha adinga imali eningi.
Ukuvikelwa kwemvelo:
Zombili zitholakala ezintweni zemvelo futhi zinezakhiwo ezinhle zemvelo. Kodwa-ke, ngenxa yokuthi kudliwa ama-reagent ambalwa amakhemikhali enqubweni yokukhiqiza i-HPS, umthwalo wayo wezemvelo ungase ube phansi.
5. Isisekelo sokukhetha
Izidingo zokusebenza: Uma unezidingo eziphezulu zezakhiwo zokuqina nokugcina amanzi, kufanele ukhethe i-cellulose ether; ezintweni ezibiza kakhulu kodwa ezidinga ukuthuthukiswa okuthile ekusebenzeni kahle, ungacabanga ukusebenzisa i-HPS.
Izimo zokusetshenziswa: Ukwakhiwa okushisa okuphezulu, ukufakelwa kodonga lwangaphandle, inhlaka yethayela nezinye izimo ezidinga ukwesekwa kokusebenza okuphezulu zifaneleka kakhulu kwi-cellulose ether; nge-putty evamile yangaphakathi noma i-basic mortar, i-HPS inganikeza izixazululo ezingabizi nezisebenzayo.
I-Hydroxypropyl starch etherfuthii-cellulose ether ngayinye inezinzuzo zayo futhi idlala indima ehlukene ezintweni zokwakha. Ukukhetha kudinga ukucatshangelwa ngokuphelele ngokusekelwe ezidingweni zokusebenza, ukulawulwa kwezindleko, indawo yokwakha kanye nezinye izici zephrojekthi ethile ukuze kufezwe umphumela wokusetshenziswa ongcono kakhulu.
Isikhathi sokuthunyelwe: Novemba-21-2024