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IHydroxypropyl methyl cellulose kusimende kanye ne-gypsum based plaster

I-HPMC Hydroxypropyl methyl cellulose kusimende nodaka lwe-gypsum, ikakhulukazi idlala indima yokugcina amanzi nokuqina, ingathuthukisa ngempumelelo ukunamathela kanye nokumelana ne-slurry.

Izinga lokushisa lomoya, izinga lokushisa kanye nezinga lomfutho womoya lingathinta izinga lokuhwamuka kwamanzi odaka lukasimende kanye nemikhiqizo esekelwe ku-gypsum.Ngakho-ke ezinkathini ezihlukene zonyaka, ukwengeza i-hydroxypropyl methyl cellulose inani elifanayo lomphumela wokugcina amanzi womkhiqizo kunomehluko othile.Ekwakhiweni kukakhonkolo, umphumela wokugcina amanzi we-slurry ungalungiswa ngokwandisa noma ukwehlisa inani le-HPMC.Ukugcinwa kwamanzi kwe-methyl cellulose ether ezingeni lokushisa eliphezulu kuyinkomba ebalulekile yokuhlukanisa ikhwalithi ye-methyl cellulose ether.

Imikhiqizo yochungechunge oluhle kakhulu lwe-hydroxypropyl methyl cellulose ingaxazulula ngempumelelo inkinga yokugcinwa kwamanzi ngaphansi kwezinga lokushisa eliphezulu.Esikhathini sokushisa okuphezulu, ikakhulukazi ezindaweni ezishisayo nezomile kanye nokwakhiwa kongqimba oluncane ohlangothini olushisayo, isidingo sekhwalithi ephezulu ye-HPMC yokuthuthukisa ukugcinwa kwamanzi okudaka;i-hydroxypropyl methyl cellulose (HPMC), ukufana kuhle kakhulu, kungamaqembu e-oksijini nomoya-mpilo we-hydroxypropyl asatshalaliswa ngokulinganayo eduze kweketango le-cellulose, angathuthukisa umoya-mpilo we-hydroxyl kanye ne-ether kanye namanzi okhiye ohlanganisa ikhono le-hydrogen bonding, enze amanzi mahhala we-hydration, ukuze ulawule ngempumelelo isimo sezulu esishisayo esibangelwa ukuhwamuka komswakama, Ukuzuza ukugcinwa kwamanzi okuphezulu.

Ikhwalithi ephezulu ye-hydroxypropyl methyl cellulose ingahlakaza ngokulinganayo nangempumelelo odakeni lukasimende nemikhiqizo kasimende, futhi ipakishe zonke izinhlayiya eziqinile, futhi yakhe ungqimba lwefilimu yokumanzisa, umswakama osesisekelweni isikhathi eside udedelwa kancane kancane, kanye ne-inorganic cementitious material hydration reaction. , ukuze kuqinisekiswe amandla esibopho namandla acindezelayo wezinto zokwakha.

Ekwakhiweni, ukuze kuzuzwe umphumela wokongiwa kwamanzi, udinga ukwengeza imikhiqizo yekhwalithi ephezulu ye-HPMC ngokuhambisana nefomula, ngaphandle kwalokho, kuzoba nokoma ngokushesha okubangelwa ukungonelwa kwamanzi okwanele, ukunciphisa amandla, ukuqhekeka, isigubhu esingenalutho kanye nekhwalithi yokuchitha. izinkinga, kodwa futhi ukwandisa nobunzima abasebenzi ukwakhiwa.Njengoba izinga lokushisa lincipha, inani lamanzi i-HPMC lingancishiswa kancane kancane, futhi umphumela ofanayo wokugcina amanzi ungafinyelelwa.


Isikhathi sokuthumela: Dec-21-2021