Imikhiqizo esekwe ku-Gypsum ibalulekile ekwakhiweni nasekusetshenzisweni kwezimboni ngenxa yezakhiwo zayo eziguquguqukayo. Ukuthuthukisa izici zabo zokusebenza ezifana nokucutshungulwa nokusabalala kubalulekile ekusebenzeni kahle nekhwalithi. Enye indlela ephumelelayo yokufeza lezi ntuthuko ukufakwa kwe-starch ethers. Lawa mastashi aguquliwe adlala indima enkulu ekwandiseni ukusebenza kahle kwe-gypsum plasters, ehlinzeka ngezinzuzo eziningi ngokuya nge-rheology, ukunamathela, nokuzinza.
Izakhiwo Zamakhemikhali kanye Nendlela Yokwenza
Ama-ether esitashi aphuma esitashini semvelo ashintshwe amakhemikhali ukuze ethule ukuxhumana kwe-ether. Ukuguqulwa okujwayelekile kufaka i-hydroxypropylation, i-carboxymethylation, kanye ne-cationization, okuholela ku-hydroxypropyl starch ether (HPS), i-carboxymethyl starch ether (CMS), ne-cationic starch ether (CSE), ngokulandelana. Lezi zinguquko zishintsha izakhiwo zomzimba nezamakhemikhali zesitashi, zithuthukise ukuhambisana kwayo ne-gypsum kanye nekhono layo lokuguqula izakhiwo ze-rheological zengxube.
Ukulawula I-Rheological: I-starch ethers ithonya kakhulu i-rheology yemikhiqizo esekelwe ku-gypsum. Ngokusebenzisana namanzi, ama-ether esitashi ayakhukhumala bese enza inethiwekhi efana nejeli. Le nethiwekhi yandisa i-viscosity yengxube, ivimbela ukuhlukaniswa kwezingxenye nokugcina ukufana okufanayo. I-viscosity ethuthukisiwe ithuthukisa ukusebenza kwe-gypsum plasters, ikwenze kube lula ukuxutshwa, ukugcotshwa, kanye nokushelela. Lokhu kulawula i-viscosity nakho kuvumela ukuphatha okungcono futhi kunciphisa ukuhlehla nokuconsa phakathi nokufakwa kwesicelo.
Ukugcinwa Kwamanzi: Ama-ethers esitashi athuthukisa ukugcinwa kwamanzi kuzingxube ze-gypsum. Bakha umgoqo obambezela ukuhwamuka kwamanzi, okunikeza isikhathi esengeziwe sokuthi ukhonkolo lubekwe kahle. Ukugcinwa kwamanzi okuthuthukisiwe kuqinisekisa ukugeleza okwanele kwamakristalu e-gypsum, okuholela kumkhiqizo wokugcina onamandla futhi ohlala njalo. Lokhu kubaluleke kakhulu ezindaweni ezishisayo noma ezomile lapho ukulahleka kwamanzi ngokushesha kungase kubeke engcupheni ubuqotho bokhonkolo.
Ukunamathela Okuthuthukisiwe Nokubumbana: Ukuba khona kwe-starch ethers kuthuthukisa ukunamathela kwe-gypsum plasters kuma-substrates futhi kuthuthukise ukuhlangana kwe-plaster ngokwayo. Lokhu kufezwa ngokwakhiwa kwezibopho ze-hydrogen phakathi kwama-molecule e-starch kanye nezinhlayiya ze-gypsum, okwenza i-matrix enamandla futhi exhumeke kakhulu. Ukunamathela okuthuthukisiwe kuqinisekisa ukuthi ukhonkolo luhlala lunamathele ngokuqinile ezindaweni ezingaphezulu, kuyilapho ukuhlangana okuthuthukisiwe kuvimbela ukuqhekeka futhi kuthuthukisa ukuqina kukonke kwe-plaster.
Izinzuzo Ezisebenzayo Emikhiqizweni Esekelwe eGypsum
Ukufakwa kwe-starch ethers emikhiqizweni esekwe ku-gypsum kuhumusha kuzinzuzo ezimbalwa ezisebenzayo ekwakhiweni nasekusetshenzisweni kwezimboni.
Ukusebenza Okuthuthukisiwe: Izakhiwo ze-rheological ezithuthukisiwe zisho ukuthi ama-gypsum plasters ahlanganiswe nama-starch ethers kulula ukusebenza ngawo. Zingasakazwa ngokushelela futhi ngokulinganayo, ukunciphisa umzamo odingekayo ngesikhathi sokufaka isicelo. Lokhu kusebenza okuthuthukisiwe kunenzuzo ikakhulukazi kumaphrojekthi wokwakha amakhulu lapho ukusebenza kahle nokusebenziseka kalula kubaluleke kakhulu.
Isikhathi Esandisiwe Sokuvula: Izici ezithuthukisiwe zokugcina amanzi ze-starch ethers zandisa isikhathi sokuvula samapulasi e-gypsum. Isikhathi sokuvula sisho isikhathi lapho ukhonkolo luhlala lusebenza ngaphambi kokuba luqale ukusetwa. Isikhathi eside esivulekile sivumela abasebenzi ukuthi benze izinguquko futhi balungise ngaphandle kokusetha ukhonkolo ngaphambi kwesikhathi. Lokhu kuvumelana nezimo kubalulekile ekufinyeleleni isiphetho sekhwalithi ephezulu, ikakhulukazi emsebenzini oyinkimbinkimbi noma onemininingwane.
Ukunciphisa Ukuncipha Nokuqhekeka: Ukugcinwa kwamanzi okuthuthukisiwe kanye nokunamathela okuthuthukisiwe kunciphisa ingozi yokushwabana nokuqhekeka komkhiqizo wokugcina. Ama-ether esitashi asiza ukugcina umswakama ubhalansi ngaphakathi kokhonkolo, oqinisekisa inqubo yokomisa efanayo. Lokhu kuholela endaweni ezinzile futhi ekwazi ukumelana nokuqhekeka, okubalulekile kukho kokubili ubuhle nobuqotho besakhiwo.
Izinzuzo Zendawo Ezungezile: Ama-starch ethers athathwe ezinsizeni ezivuselelekayo, okuwenza abe isithako esinobungani bemvelo. Ukusetshenziswa kwabo emikhiqizweni esekelwe ku-gypsum kunganciphisa ukuthembela kuma-polymers okwenziwa nezinye izithasiselo ezingavuseleleki. Lokhu kuhambisana nesidingo esikhulayo sezinto zokwakha ezisimeme kanye nezinqubo.
Izicelo emikhiqizweni eyahlukene yeGypsum
Ama-estarch ether athola ukusetshenziswa emikhiqizweni eyahlukene ye-gypsum, ngayinye izuza ekuqhubekeleni phambili okuthuthukisiwe nokusabalala abakunikezayo.
Amapulasi e-Gypsum: Okwenziwa ngodonga olujwayelekile nokhonkolo, ama-ether esitashi athuthukisa ukusebenziseka kalula kanye nekhwalithi yokuqeda. Basiza ukufeza izinto ezibushelelezi, ngisho nezindawo ezinokukhubazeka okuncane, ukunciphisa isidingo somsebenzi wokuqeda owengeziwe.
Ama-Joint Compounds: Kumakhompiyutha ahlangene asetshenziselwa ukuvala i-drywall seams, ama-starch ethers athuthukisa ukusabalala nokunamathela, aqinisekise ukuqeda okungenamthungo nokuqina. Ziphinde zithuthukise ukukhululeka kwesihlabathi uma inhlanganisela yomile, okuholela endaweni yokugcina ebushelelezi.
Izithako zokuzilinganisa: Kumakhompiyutha aphansi azilinganisa, ama-ether esitashi afaka isandla ekugelezeni nasekulinganiseni izakhiwo, aqinisekise indawo eyisicaba futhi elinganayo. Amandla abo okugcina amanzi avimbela ukomiswa ngaphambi kwesikhathi futhi aqinisekise ukuphulukiswa okufanele, okuholela esitezi esiqinile nesizinzile.
Amabhodi e-Gypsum: Kumabhodi e-gypsum, ama-starch ethers athuthukisa ukunamathela phakathi kwe-gypsum core kanye nomugqa wephepha, okuthuthukisa amandla ebhodi nokuzinza. Lokhu kubalulekile ekugcineni ubuqotho besakhiwo samabhodi ngesikhathi sokuphatha nokufakwa.
Ama-ether esitashi amele intuthuko enkulu ekwenziweni kwemikhiqizo esekwe ku-gypsum, enikeza ukuqhubezeka okuthuthukisiwe nokusabalala. Ikhono labo lokulawula i-rheology, ukuthuthukisa ukugcinwa kwamanzi, kanye nokuthuthukisa ukunamathela lihumusha ezinzuzweni ezingokoqobo ezifana nokusetshenziswa okulula, isikhathi esivulekile esinwetshiwe, ukunciphisa ukuncipha nokuqhekeka, kanye nokuqina okuthuthukisiwe okuphelele. Njengoba imboni yezokwakha iqhubeka nokuguqukela ezindleleni ezisebenza kahle nezisimeme, ukusetshenziswa kwe-starch ether emikhiqizweni eyenziwe nge-gypsum cishe kuzobaluleke kakhulu, kube nomthelela ekuthuthukisweni kwekhwalithi ephezulu kanye nezinto zokwakha ezingangeni emvelweni.
Isikhathi sokuthumela: Jun-03-2024