Indlela yokukhetha i-hydroxypropyl methylcellulose ekugcinweni kwamanzi

Ukugcinwa kwamanzi ku-hydroxypropyl methylcellulose kungenye yezinto ezibalulekile ze-hydroxypropyl methylcellulose. Izinto ezifana nezinga lokushisa lomoya, izinga lokushisa kanye nesivinini somfutho womoya zizothinta izinga lokuguquguquka kwamanzi odaka lukasimende kanye nemikhiqizo esekelwe ku-gypsum. Ngakho-ke, ezinkathini ezihlukene zonyaka, kunomehluko othile kumphumela wokugcina amanzi wemikhiqizo enenani elifanayo le-hydroxypropyl methylcellulose engeziwe.

Ngokuvamile, ukuphakama kwe-viscosity ye-hydroxypropyl methylcellulose, umphumela wokugcinwa kwamanzi uzoba ngcono, kodwa umthelela we-viscosity ekugcinweni kwamanzi uzoncishiswa lapho i-viscosity idlula i-100,000 mpa.s. Nge-hydroxypropyl methylcellulose ene-viscosity engaphezu kuka-100,000, kuyadingeka ukwandisa inani le-hydroxypropyl methylcellulose ukuze kukhuliswe kakhulu izinga lokugcinwa kwamanzi.

Ekwakhiweni okuthile, umphumela wokugcina amanzi we-slurry ungalungiswa ngokukhuphula noma ukwehlisa inani le-hydroxypropyl methylcellulose. Imikhiqizo yochungechunge lwe-Hydroxypropyl methylcellulose ingaxazulula ngokuphumelelayo inkinga yokugcinwa kwamanzi ngaphansi kwezinga lokushisa eliphezulu. Ezikhathini zokushisa okuphezulu, ikakhulukazi ezindaweni ezishisayo nezomile kanye nokwakhiwa kongqimba oluncane ohlangothini olushisayo, i-hydroxypropyl methylcellulose yekhwalithi ephezulu iyadingeka ukuze kuthuthukiswe ukugcinwa kwamanzi odaka.

Ikhwalithi ephezulu ye-hydroxypropyl methylcellulose inokufana okuhle kakhulu. Amaqembu ayo e-methoxyl ne-hydroxypropoxyl asatshalaliswa ngokulinganayo eceleni kweketango lamangqamuzana e-cellulose. Ingathuthukisa ama-athomu omoya-mpilo ku-hydroxyl ne-ether bond. Ikhono lokuhlangana kwamanzi ukwenza amabhondi e-hydrogen liguqula amanzi amahhala abe amanzi abophekile, ngaleyo ndlela alawule ngempumelelo ukuhwamuka kwamanzi okubangelwa izinga lokushisa eliphezulu kanye nokuzuza ukugcinwa kwamanzi aphezulu.

Ikhwalithi ephezulu ye-hydroxypropyl methylcellulose ingahlakaza ngokulinganayo nangempumelelo odakeni lukasimende kanye nemikhiqizo esekelwe ku-gypsum, igoqe zonke izinhlayiya eziqinile, futhi yakha ifilimu emanzi, futhi umswakama osekelweni uzokhishwa kancane kancane isikhathi eside. Ukusabela kwe-hydration kwenzeka nge-inorganic gelling material, ngaleyo ndlela kuqinisekisa amandla ebhondi namandla acindezelayo wento. Ngakho-ke, ekwakhiweni kwehlobo lokushisa eliphezulu, ukuze kuzuzwe umphumela wokugcina amanzi, kuyadingeka ukwengeza imikhiqizo yekhwalithi ephezulu ye-hydroxypropyl methylcellulose ngobuningi obanele ngokusho kwefomula, ngaphandle kwalokho, ukufakwa kwamanzi okwanele, amandla ancishisiwe, nokuqhekeka kuzokwenzeka ngenxa. ukuze omiswe ngokweqile. Izinkinga zekhwalithi ezinjengomgodi, ukugoba nokuwa nazo zandisa ubunzima bokwakha kubasebenzi. Njengoba izinga lokushisa lehla, inani le-hydroxypropyl methylcellulose elingeziwe lingancishiswa kancane kancane, futhi umphumela ofanayo wokugcina amanzi ungafinyelelwa.