Iyiphi inqubo yokukhiqiza ye-methylcellulose?

Iyini indima ye-methyl cellulose ether e-Dry Powder Botar?
A: Methyl hydroxyethyyl cellulose ether (Mhec) ne-methyl hydroxyproppropylylllopylyllylllopylylllopypropyllopylylllls ether (HPMC) abhekiswe ku-methyl cellulose ether.

Emkhakheni we-powder eyomile, i-methyl cellulose ether iyinto ebalulekile elungisiwe ebonakalayo yodumo owomile onjenge-fortuder portar, u-gypssum onamathela, i-tulty, impahla yokuzithandela, i-caulking impahla. Kuma-powder omile ahlukahlukene, i-methyl cellulose ether ikakhulukazi idlala indima yokugcinwa kwamanzi nokuqina.

Iyiphi inqubo yokukhiqiza ye-methylcellulose?
Impendulo: Okokuqala, impahla eluhlaza okwesibhakabhaka ichotshozwa, khona-ke i-ALkalised yahlwitha ngaphansi kwesenzo se-caustic soda. Faka u-OleFem oxide (njenge-ethylene oxide noma i-proplemay oxide) ne-methyl chloride ukuze isheshise. Ekugcineni, ukugeza amanzi nokuzihlanza kwenziwa ekugcineni kuthola impuphu emhlophe. Le mpuphu, ikakhulukazi ikhambi layo elinamanzi, linezakhiwo ezibonakalayo ezithandekayo. I-cellulose ether esetshenziswa embonini yezokwakha yi-methyl hydroxyethylsyl cellulose ether noma i-methyl hydroxyprosellllls (okukhulunywa ngayo njenge-MHC noma i-MHPC, noma igama elilula kakhudlwana Mc). Lo mkhiqizo udlala indima ebaluleke kakhulu emkhakheni we-Dry Powder Botar. indima ebalulekile.

Yini ukugcinwa kwamanzi kwe-methyl cellulose ether (MC)?
Impendulo: Izinga lokugcinwa kwamanzi lingenye yezinkomba ezibalulekile ukukala ikhwalithi ye-methyl cellulose ether, ikakhulukazi ekwakhiweni kwesendlalelo komoya osuselwa ku-clement kanye no-gypsum osuselwa ku-gypsum. Ukugcinwa kwamanzi okuthuthukisiwe kungavimba ngempumelelo into yokulahleka kwamandla nokuqhekeka okubangelwa ukumiswa ngokweqile nokunganele nge-hydration. Ukugcinwa kwamanzi okuhle kakhulu kwe-methyl cellulose ether ngaphansi kwezimo zokushisa okuphezulu kungenye yezinkomba ezibalulekile zokuhlukanisa ukusebenza kwe-methyl cellulose ether. Ngaphansi kwezimo ezijwayelekile, ukugcinwa kwamanzi kwe-methyl cellulose evamile kuncipha ngokwanda kokushisa. Lapho amazinga okushisa ekhuphuka abe ngu-40 ° C, ukugcinwa kwamanzi kwe-methyl cellulose, kuncishiswe kakhulu, okubaluleke kakhulu ezindaweni ezishisayo nezomile. Kanye nokwakhiwa kwesendlalelo ongezansi ohlangothini olunelanga ehlobo kuzoba nomthelela omkhulu. Kodwa-ke, ukwenza ukuntuleka kokugcinwa kwamanzi ngokusebenzisa umthamo omkhulu kuzodala ukubonakala okuphezulu kwezinto zokwaziswa ngenxa yomthamo omkhulu, okuzobangela ukuphazamiseka ekwakheni.

Ukugcinwa kwamanzi kubaluleke kakhulu ukwandisa inqubo enzima yezinhlelo zama-gelling zamaminerali. Ngaphansi kwesenzo se-cellulose ether, umswakama ukhishelwa kancane kancane ungqimba noma emoyeni esikhathini eside, ngaleyo ndlela uqinisekise ukuthi izinto ezinhle (usimende noma i-gypsum) zinesikhathi esanele sokuxhumana namanzi bese kuthi kancane kancane.