1. Isizinda socwaningo ngomphumela wei-cellulose etherkupulasitiki ukuncipha kwamahhala kodaka
Udaka luyinto esetshenziswa kakhulu kumaphrojekthi wokwakha, futhi ukuzinza komsebenzi walo kunomthelela obalulekile eqophelweni lezakhiwo. Ukuncipha kwamahhala kwepulasitiki kuyinto engenzeka odakeni ngaphambi kokuqina, okuzodala izinkinga njengokuqhekeka kodaka, okuthinta ukuqina kwayo kanye nobuhle bayo. I-Cellulose ether, njengesithako esivame ukusetshenziswa odakeni, inomthelela obalulekile ekuncipheni kwamahhala kwepulasitiki kodaka.
2. Umgomo we-cellulose ether wehlisa ukushwabana kwamahhala kwepulasitiki kodaka
I-Cellulose ether inokugcinwa kwamanzi okuhle kakhulu. Ukulahlekelwa kwamanzi odakeni kuyisici esibalulekile esiholela ekuncipheni kwamahhala kwepulasitiki. Amaqembu e-hydroxyl kuma-molecule e-cellulose ether kanye nama-athomu omoya-mpilo kumabhondi e-ether azokwakha izibopho ze-hydrogen nama-molecule amanzi, aphendule amanzi amahhala abe amanzi abophekile, ngaleyo ndlela ehlise ukulahlekelwa kwamanzi. Isibonelo, kwezinye izifundo, kwatholakala ukuthi ngokwanda komthamo we-cellulose ether, izinga lokulahlekelwa kwamanzi edaka lehle ngokulinganayo. Thandai-methyl hydroxypropyl cellulose ether (HPMC), lapho umthamo ungu-0.1-0.4 (ingxenye enkulu), inganciphisa izinga lokulahlekelwa kwamanzi odaka lukasimende ngo-9-29%.
I-Cellulose ether ithuthukisa izakhiwo ze-rheological, isakhiwo senethiwekhi enezimbotshana kanye nengcindezi ye-osmotic yokunamathisela kukasimende okusha, futhi impahla yayo yokwenza ifilimu ivimbela ukusakazeka kwamanzi. Lolu chungechunge lwezindlela ngokuhlanganyela lunciphisa ukucindezeleka okubangelwa izinguquko zomswakama odongeni, ngaleyo ndlela luvimbele ukushwabana kwamahhala kwepulasitiki.
3. Umphumela womthamo we-cellulose ether ekuncipheni kwamahhala kwepulasitiki kodaka
Ucwaningo luye lwabonisa ukuthi ukushwabana kwamahhala kwepulasitiki kodaka lukasimende kuncipha ngokuhambisana nokwenyuka komthamo we-cellulose ether. Uma sithatha i-HPMC njengesibonelo, lapho umthamo ungu-0.1-0.4 (ingxenyana yobuningi), ukushwabana kwamahhala kwepulasitiki kodaka lukasimende kungancishiswa ngo-30-50%. Lokhu kungenxa yokuthi njengoba umthamo ukhula, umphumela wawo wokugcina amanzi kanye neminye imiphumela yokuvimbela ukuncipha iyaqhubeka nokwanda.
Kodwa-ke, umthamo we-cellulose ether awukwazi ukwenyuka unomphela. Ngakolunye uhlangothi, ngokombono wezomnotho, ukwengeza kakhulu kuzokwandisa izindleko; ngakolunye uhlangothi, i-cellulose ether eningi kakhulu ingase ibe nomthelela omubi kwezinye izakhiwo zodaka, njengamandla odaka.
4. Ukubaluleka komthelela we-cellulose ether ekuncipheni kwamahhala kwepulasitiki kodaka
Ngokombono wesicelo sobunjiniyela esisebenzayo, ukungezwa okunengqondo kwe-cellulose ether odakeni kunganciphisa ngempumelelo ukushwabana kwamahhala kwepulasitiki, ngaleyo ndlela kunciphise ukwenzeka kokuqhekeka kodaka. Lokhu kubaluleke kakhulu ekwenzeni ngcono izinga lezakhiwo, ikakhulukazi ekwenzeni ngcono ukuqina kwezakhiwo ezifana nezindonga.
Kwamanye amaphrojekthi akhethekile anezidingo eziphakeme zekhwalithi yodaka, njengezakhiwo zokuhlala ezisezingeni eliphezulu nezakhiwo ezinkulu zomphakathi, ngokulawula ithonya le-cellulose ether ku-plastic shrinkage of mortar, kungaqinisekiswa ukuthi iphrojekthi ihlangabezana nezindinganiso eziphezulu. .
5. Amathemba ocwaningo
Nakuba kube nemiphumela ethile yocwaningo ngethonya le-cellulose ether ekuncipheni kwamahhala kwepulasitiki kodaka, kusenezici eziningi ezingabhekwa ngokujulile. Isibonelo, indlela yokuthonya yezinhlobo ezihlukene zama-cellulose ether ekuncipheni kwamahhala kwepulasitiki kodaka lapho esebenza kanye nezinye izithasiselo.
Ngokuthuthuka okuqhubekayo kobuchwepheshe bokwakha, izidingo zokusebenza kodaka nazo zikhula njalo. Ucwaningo olwengeziwe luyadingeka mayelana nendlela yokulawula ngokunembe kakhudlwana ukusetshenziswa kwe-cellulose ether odakeni ukuze kuzuzwe umphumela omuhle kakhulu wokuvimbela ukushwabana kwamahhala kwepulasitiki kuyilapho kucatshangelwa ezinye izakhiwo zodaka.
Isikhathi sokuthumela: Dec-13-2024