Idethi yokuthunyelwe:11,Dec,2023
Ama-Cellulosezisetshenziswa kakhulu ezintweni ezisekelwe kusimende, ikakhulukazi odakeni olomile, ngenxa yokugcinwa kwamanzi okuhle kakhulu kanye nemiphumela yokujiya. Ngakho-ke, izakhiwo kanye nokwakheka indlelai-cellulose ether okuguquliwe okusekelwe kusimende kanye nokusebenzisana phakathii-cellulose ether kanye nodaka lukasimende kancane kancane seluphenduke umkhakha wokunakwa emkhakheni wezinto zokwakha nobunjiniyela eminyakeni yamuva. Imiphumela eminingi yocwaningo isizuziwe. Ukuhlanganisa inqubekelaphambili yocwaningo ekhaya naphesheya, kusenezinkinga ezilandelayo ocwaningweni nasekusetshenzisweni kwei-cellulose ether izinto ezisekelwe kusimende ezilungisiwe:
1.Ziningi izinhlobo zeama-cellulose.Ngishoama-cellulose ezisetshenziswa ezintweni ezisekelwe kusimende zihlukaniswe zaba izinhlobo eziningi ezifana ne-HEC, HEMC kanye ne-HPMC ngenxa yezinga lazo lokushintsha. Uhlobo olufanayo lweama-cellulosezinomehluko omningi ekwakhekeni kwamangqamuzana, isisindo samangqamuzana, izinga lokushintsha noma okuqukethwe okunye. Njengamanje, ucwaningo oluningi ekhaya naphesheya lugxile kokukodwa noma ezimbalwaama-cellulose.Ukukhetha kwei-cellulose ether kunqunyelwe emikhakheni ehlukene yesicelo. Izici zesakhiwo samangqamuzanaama-cellulose azikhonjiswa, futhi ukumelela kwazo akumeleli. Isiphetho siwumphumela ongenakugwemeka "wokushintsha ingxenye", futhi kukhona ukuphikisana nezingxabano phakathi kwemiphumela yokuhlolwa. Ngakho-ke, kuyadingeka ukutadisha ngokuhlelekile ukuhlukaniswa kanye nezakhiwo zesakhiwo kanye nezindlela zezinhlobo ezahlukene zei-cellulose ether izinto ze-gelling eziguquliwe.
2.Izincwadi ezikhona zifunde umthelela weama-cellulose ezimpahleni ezihlukahlukene zezinto zikasimende, futhi yenze ukuhlaziya okuthile kwendlela yokwakheka kwayo, kodwa yehluleka ukunquma ubudlelwano phakathi kwesakhiwo samangqamuzanaama-cellulose kanye nezakhiwo zodaka lukasimende oluguquliwe. njalo, futhi kukhona umehluko osobala ezindleleni zabo. Phakathii-cellulose etherIzinto ezisekelwe kusimende ezishintshiwe, kunezifundo ezimbalwa zezinto ezinezinhlaka ezahlukene zamangqamuzana, ezingakwazi ukuchaza ngokuyisisekelo indlela yokwakheka kwezakhiwo ezahlukahlukenei-cellulose ether-okuguquliwe okusekelwe kusimende. . Nakuba ezinye izincwadi zakuthola lokhoama-cellulose ngezakhiwo ezahlukene zamangqamuzana zinemiphumela ehlukene ku-hydration kasimende, izizathu eziyisisekelo azikakacaciswa kabanzi.
3.Indlela yethonya lei-cellulose ether mayelana ne-cement hydration kinetics kusazoqhutshekwa kufundwe. Njengamanje, mayelana nendlela yokulibaziseka kwe-hydration yei-cellulose ether, nakuba i-adsorption ibhekwa njengembangela yangempela yokubambezeleka kwe-hydrationi-cellulose ether, kutholakala ukuthi amandla e-adsorption anamandla phakathi kwemikhiqizo ye-hydration kanyei-cellulose ether, ukugeleza kukasimende ukubambezeleka. Indlela ye-adsorption ephakathiama-cellulose kanye nemikhiqizo ye-cement hydration, kanye nezizathu zamakhono ahlukene we-adsorption ehlukeneama-cellulose kanye nemikhiqizo ye-cement hydration, ayikahlolisiswa.
4.Izincwadi ezikhona zibonisa lokhoama-cellulose kungathinta kakhulu ukwakheka kwembotshana yezinto ezisekelwe usimende.Ama-Cellulose nazo zikholelwa ukuthi zisebenza phezulu futhi zinomphumela wokungenisa umoya kumaslurry kasimende amasha, ngaleyo ndlela andise ukuqineka kwezidaka zikasimende eziqinile. Nokho, ithonyaama-cellulose mayelana nokujwayelekile kanye nokwakheka kwendlela yokusabalalisa usayizi wezimbotshana zikasimende akuvamile ukuba kuxoxwe ngakho.
5. Izakhiwo ze-Rheological ziyingxenye ebalulekile yokusetshenziswa kweama-cellulose ezintweni ezisekelwe kusimende. Ngeshwa, kunezifundo ezimbalwa mayelana nezakhiwo ze-rheologicali-cellulose ether udaka lukasimende oluguquliwe ekhaya naphesheya.
Isikhathi sokuthumela: Dec-11-2023
