Ukuphuculwa kwempembelelo ye-hydroxypropyl methyl cellulose kwizinto ezisekwe kwisamente

I-Hydroxypropyl methyl cellulose

Ukuseta uvavanyo lwexesha

Ixesha lokumisa ikhonkrithi ikakhulu enxulumene nokubeka ixesha lesamente, impembelelo aggregate ayikho enkulu, ngoko ke ixesha ukusetwa udaka ingasetyenziswa endaweni isifundo HPMC kuba ngaphantsi kwamanzi non-ukusasazwa kokusetwa ikhonkrithi ixesha, impembelelo umxube ngenxa yokubeka ixesha ngumlinganiselo wamanzi-samente yodaka, isiphumo sesanti yesanti, ngoko ukuze kuvavanywe umlinganiselo we-motarcement kunye nexesha lokubeka i-HP, impembelelo ye-motarcement kunye nexesha lokubeka i-HP. yodaka kufuneka ilungiswe.

I-HPMC yisakhiwo somgca we-macromolecule, kunye neqela le-hydroxyl kwiqela elisebenzayo, elinokwenza i-hydrogen bond kunye ne-molecule zamanzi ezixutywayo kunye nokwandisa i-viscosity yamanzi okuxuba. HPMC imixokelelwane elide molecular uya kutsala omnye komnye, ukuze iimolekyuli HPMC intertwine omnye komnye ukwenza isakhiwo womnatha, isamente, ukuxuba amanzi esongelwe. Ngenxa yokuba i-HPMC yenza ulwakhiwo lothungelwano olufana nefilimu ebhityileyo kunye nesiphumo sokusonga sesamente, iya kuthintela ngempumelelo ukufuma kokufuma kudaka, ithintele okanye icothise isantya sokugalela amanzi kwisamente.

Uvavanyo lokuchitha amanzi

Into yokopha kwamanzi yodaka ifana nekhonkrithi, eya kubangela ukuhlaliswa kwe-aggregate enzulu, kukhokelela ekwandeni komlinganiselo wesamente yamanzi kwinqanaba eliphezulu le-slurry, kwaye wenze umaleko ophezulu we-slurry ube nokunciphisa okukhulu kweplastiki okanye ukuqhekeka kwinqanaba lokuqala, kwaye amandla omgangatho we-slurry abuthathaka. Ukususela kuvavanyo, kunokubonwa ukuba xa isixa sokuxuba singaphezulu kwe-0.5%, akukho nto yokuvuza kwamanzi. Oku kungenxa yokuba xaHPMCixutywe ngodaka, i-HPMC inokwakheka kwefilimu kunye nesakhiwo sothungelwano, kunye ne-adsorption ye-hydroxyl kwikhonkco elide le-macromolecules, ukwenzela ukuba i-samente kudaka kunye nokuxuba ifom ye-flocculation yamanzi, ukuqinisekisa isakhiwo esizinzileyo somzimba wodaka. Emva kokongeza i-HPMC kudaka kwakhona, amaqamza amancinci amaninzi azimeleyo aya kwenziwa. La maqamza aya kusasazwa ngokulinganayo kudaka kwaye athintele ukubekwa kweaggregate. HPMC ukusebenza kobugcisa bezinto ezisekelwe kwisamente kunempembelelo enkulu, edla ngokusetyenziswa ukulungiselela ezifana nodaka olomileyo, udaka lwepolymer kunye nezinye izinto ezintsha zesamente esekelwe kwidityanisiweyo, ukuze ibe nokugcinwa kakuhle kwamanzi, iplastiki.