Isiphumo seHydroxypropyl Methyl Cellulose HPMC kwixesha lokuSeta leConcrete

Ixesha lokumisela ikhonkrithi lihambelana kakhulu nexesha lokumisa i-samente, kwaye impembelelo ye-aggregate ayinkulu.Ngoko ke, umphumo we-hydroxypropyl methylcellulose HPMC ngexesha lokumisela umxube wekhonkrithi ongaphantsi kwamanzi ongenakuhlakazeka unokufundwa ngexesha lokumisela udaka.Ekubeni ixesha lokumisa lodaka lichaphazeleka ngamanzi, ukwenzela ukuvavanya umphumo we-HPMC kwixesha lokumisela udaka, umlinganiselo wamanzi-samente kunye nodaka lodaka kufuneka lulungiswe.

Iziphumo zovavanyo zibonisa ukuba ukongezwa kwe-hydroxypropyl methylcellulose HPMC kunempembelelo enkulu yokunciphisa umxube wodaka, kwaye ixesha lokumisa lomdaka lide kunye nokunyuka kwenani le-hydroxypropyl methylcellulose.Kwimeko yomxholo ofanayo we-HPMC, udaka olwenziwe phantsi kwamanzi lungcono kunodaka olwenziwe emoyeni.Ukubumba okuphakathi kuthatha ixesha elide ukusetwa.Xa kulinganiswa emanzini, xa kuthelekiswa nomfanekiso ongenanto, ixesha lokuqala lokumisela udaka oluxutywe kunye ne-hydroxypropyl methylcellulose libambezelekile ngeeyure ze-6-18, kwaye ixesha lokugqibela lokumisela lalibaziseka kwiiyure ze-6-22.Ke ngoko, i-HPMC kufuneka isetyenziswe ngokudibeneyo kunye neearhente zamandla zakuqala.

I-HPMC yi-polymer ephezulu ye-molecular ene-macromolecular linear structure.Iqela lalo elisebenzayo linamaqela e-hydroxyl, anokwenza iibhondi ze-hydrogen kunye nama-molecule axutywe ngamanzi kunye nokwandisa i-viscosity yamanzi adibeneyo.Amatyathanga eemolekyuli amade e-HPMC aya kutsala omnye komnye, enze iimolekyuli ze-HPMC ezidityanisiweyo zenze isakhiwo sothungelwano, isamente esongayo kunye nokuxuba amanzi.Ekubeni i-HPMC isenza ifilim-efana nesakhiwo sothungelwano sokusonga isamente, inokuthintela ngokufanelekileyo ukuguquguquka kwamanzi kudaka, kwaye ithintele okanye icothise isantya se-hydration yesamente.