I-Hydroxypropyl methyl cellulose odakeni olomile, ukufakwa kwe-cellulose ether kuphansi kakhulu, kodwa kungathuthukisa kakhulu ukusebenza kodaka olumanzi, ukusebenza kokwakhiwa kodaka kungenye yezithako eziyinhloko.Manje, i-hydroxypropyl methyl cellulose esetshenziswa ku-dry mortar cellulose ether ikakhulukazi i-hydroxypropyl methyl cellulose ether (HPMC).I-Hydroxypropyl methyl cellulose odakeni olomile I-HPMC idlala indima ikakhulukazi ekugcineni amanzi, ukuqina, ukuthuthukisa ukusebenza komsebenzi wokwakha.I-Hydroxypropyl methylcellulose HPMC ayibambi iqhaza kunoma yikuphi ukusabela kwamakhemikhali, idlala indima yokusiza kuphela.I-putty powder engeza amanzi, odongeni, ukusabela kwamakhemikhali, ngoba kukhona isizukulwane sezinto ezintsha, i-putty powder odongeni phansi odongeni, igaywe ibe yimpushana, bese isetshenziswa, ayisekho, ngoba iye yakha i-putty. izinto ezintsha (i-calcium carbonate).Izingxenye eziyinhloko zempushana ye-calcium empunga yilezi: I-Ca(OH)2, i-CaO kanye nenani elincane lengxube ye-CaCO3, i-CaO+H2O=Ca(OH)2 - Ca(OH)2+CO2=CaCO3↓+H2O umlotha we-calcium emanzini. kanye nomoya ngaphansi kwesenzo se-CO2, ukwakheka kwe-calcium carbonate, kanye ne-HPMC kuphela ukugcinwa kwamanzi, i-calcium ash ash yokusabela kangcono, eyakhe ayizange ihlanganyele kunoma yikuphi ukusabela.
Ikhwalithi ephezulu ye-hydroxypropyl methyl cellulose ingahlakaza ngokulinganayo nangempumelelo odakeni lukasimende kanye 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.Ngakho-ke, ekwakhiweni kwehlobo lokushisa eliphezulu, ukuze kuzuzwe umphumela wokugcina amanzi, kudingeka ungeze imikhiqizo yekhwalithi ephezulu ye-HPMC ngokuhambisana nefomula, ngaphandle kwalokho, kuyoba nokoma ngokushesha okukhulu futhi okubangelwa ukuntuleka kwe-hydration, ukunciphisa amandla, ukuqhekeka, okungenalutho. isigubhu nokuwa kanye nezinye izinkinga izinga, kodwa futhi ukwandisa nobunzima abasebenzi ukwakhiwa.Njengoba izinga lokushisa lincipha, inani lamanzi elengezwe yi-HPMC lingancishiswa kancane kancane, futhi umphumela ofanayo wokugcina amanzi ungafinyelelwa.
Isikhathi sokuthumela: Sep-16-2022