Ama-ether esitashiziyizinto eziphuma ku-polymer ezincibilika emanzini ezenziwe ngesitashi semvelo ngokuguqulwa kwamakhemikhali noma ngokomzimba. Zisetshenziswa kakhulu ekwakheni njengezithasiselo zokugcina amanzi, ukuqina, ukuthuthukisa ukusebenza kahle, nokuthuthukisa izakhiwo ze-rheological zezinto. Ngokuvamile zitholakala kusitashi sezitshalo ezifana nommbila, amazambane, kanye ne-cassava. Amaqembu e-ether angeniswa ngokusabela kwe-etherification, okushintsha ukuncibilika kwawo, ukuzinza, kanye nezakhiwo zokuqina, okuwenza akwazi ukusebenza ezindaweni ezine-alkaline kanye nezinhlelo eziyinkimbinkimbi.
Embonini yokwakha, ama-starch ether avame ukusetshenziswa ezinhlelweni zodaka oluxutshwe okomile njengezinamathiseli zamathayili, izimpushana ze-putty zangaphakathi nangaphandle, izimbotshana zokushisa, kanye nezinto zokuzilinganisa ezisekelwe ku-gypsum noma usimende. Ukusetshenziswa kwazo ngokuvamile kuphansi kakhulu, ngokuvamile phakathi kuka-0.02% no-0.1%, kodwa zingathuthukisa kakhulu ukusebenza kahle. Izindlela eziyinhloko zokusebenza zifaka:
Ukulungisa ukuhambisana kanye ne-rheology: Ama-starch ethers avuvukala emanzini ukuze akhe isixazululo esiqinile. Uma esetshenziswa kanye nezinye izinto zokujiya (njenge-hydroxypropyl methylcellulose (HPMC) kanye ne-hydroxyethyl methylcellulose (MHEC), angenza ngcono inani lesivuno kanye ne-thixotropy ye-mortar, aqinisekise kokubili ukugeleza okuhle ngesikhathi sokusetshenziswa kanye nokuncipha kokugoba ngemva kokuma.
Ukuthuthukisa ukugcinwa kwamanzi: Ama-molecule esitashi aguquliwe athanda kakhulu amanzi, anamathela futhi avale amanzi, anciphisa ukumuncwa kwamanzi kanye nokuhwamuka kusuka ku-substrate, aqinisekise ukumuncwa okwanele kwesimende noma i-gypsum, futhi athuthukise amandla nokunamathela.
Ukuvimbela ukugoba nokopha: Ezintweni zokunamathisela zamathayili noma ekusetshenzisweni okuqondile, ama-starch ether angathuthukisa izakhiwo zokulwa nokugoba kwe-mortar. Ezintweni ezizilinganisayo noma ezinciphayo, zinganciphisa ukopha futhi ziqinisekise ukuthi indawo ibushelelezi.
Ukuthuthukisa umuzwa wokufaka: Zenza ukuklwebha nokusabalalisa kube bushelelezi, kunciphisa “ukunamathela kommese,” kuthuthukisa ukusebenza kahle kokufaka kanye nekhwalithi yomkhiqizo wokugcina.
Ama-starch ether avame ukusetshenziswa kanye nama-cellulose ether (HPMC, HEMC, kanye ne-MHEC) ekwakhiweni. Ama-cellulose ether ahlinzeka ngezakhiwo zokugcina amanzi kanye nokuqina, kuyilapho ama-starch ether elungisa i-thixotropy kanye nokuvumelana kwe-mortar, kufezwe ukusebenza okulinganiselayo. Isibonelo, ekwakhiweni kwe-tile adhesive, inani elifanele le-starch ether linganciphisa ukuqina ngokweqile okubangelwa ama-cellulose ethers ane-viscosity ephezulu, okwenza kube lula ukufaka i-mortar. Kuma-putty powder, ingathuthukisa ukushelela futhi inciphise ingozi yokushwabana nokuqhekeka.
Ezinhlelweni zokwakha, ama-starch ether anikeza izinzuzo zokusebenza ezilandelayo:
Ubungane nemvelo: Zenziwe ngesitashi sezitshalo zemvelo, ziyabola futhi azinamthelela omkhulu emvelweni.
Ukusebenza kahle kwezindleko: Amazinga aphansi okusetshenziswa aletha ukuthuthuka okukhulu, okunciphisa ukuthembela ezithasiselweni ezibizayo.
Ukuzivumelanisa nezimo kokwakheka: Kufanelekela izimbotshana ezisekelwe kusimende, ezisekelwe ku-gypsum, kanye nezisekelwe ezixubile, futhi ziyahambisana nezinhlobonhlobo zezithasiselo.
Okuhlukilei-starch etherIzinhlobo nezindlela zokuguqula ziholela emazingeni ahlukahlukene okuncibilika, amandla okujiya, ukumelana ne-alkali, kanye nokuzinza. Ngakho-ke, ekusetshenzisweni okungokoqobo, kubalulekile ukukhetha uhlobo olufanele ngokusekelwe ohlelweni lokwakheka, indawo yokwakha, kanye nokusebenza okuhlosiwe, kanye nokunquma umthamo ofanele ngokuhlola. I-starch ether iyisengezo "esincane, umphumela omkhulu" ezintweni zokwakha. Ithuthukisa kakhulu i-rheology ye-mortar, ukugcinwa kwamanzi, kanye nokusebenza kahle, ithuthukisa kakhulu ukusebenza kahle kokwakha kanye nekhwalithi yomkhiqizo oqediwe. Iyisengezo esisebenzayo esibalulekile ezinhlelweni zesimanje ze-mortar ezomile.
Isikhathi sokuthunyelwe: Agasti-11-2025