IHydroxypropyl Methylcellulose (HPMC) yongezelelo oluguquguqukayo olusetyenziswa ngokuqhelekileyo kwi-adhesives tile kunye ne-grouts ngokukwazi kwayo ukuphucula ukusebenza kunye nokusebenza. Iipropati zayo zinegalelo kwiinkalo ezahlukeneyo zenkqubo yokubambelela kunye ne-grouting, echaphazela izinto ezifana namandla okudibanisa, ukugcinwa kwamanzi, ixesha elivulekileyo, ukuchasana kwe-sag, kunye nokuqina okupheleleyo. Ukuqonda indlela i-HPMC esebenza ngayo kwezi zixhobo ifuna ukuphonononga kubume bayo beekhemikhali, ukusebenzisana kwayo namanzi, kunye nendima yayo kwiinkqubo zokuncamathelisa kunye ne-grouting.
Ubume beMichiza ye-HPMC:
I-HPMC yi-ether ye-cellulose ephuma kwi-cellulose yendalo, i-polysaccharide efumaneka kwizityalo.
Ubume bayo beekhemikhali bubandakanya i-cellulose backbone chain kunye ne-hydroxypropyl kunye ne-methyl substituents.
Iqondo lokuthatha indawo (DS) la maqela limisela iimpawu ze-HPMC, kuquka ukunyibilika kwayo, amandla okugcina amanzi, kunye nokuziphatha kwe-rheological.
Ugcino lwamanzi:
I-HPMC inobudlelwane obuphezulu bamanzi ngenxa yobume bayo be-hydrophilic, isenza iibhondi ze-hydrogen kunye neemolekyuli zamanzi.
Kwii-adhesives ze-tile, i-HPMC isebenza njenge-arhente yokugcina amanzi, ukwandisa ixesha elivulekileyo le-adhesive.
Eli xesha livulekileyo elongezelelweyo livumela ukusebenza kakuhle kunye nokuphucula ukubambelela ngokuthintela ukomisa kwangaphambi kwexesha lokunamathela.
Ukuphuculwa kokuSebenza:
Ubukho be-HPMC kwi-adhesives tile kunye ne-grouts kuphucula ukusebenza kwazo ngokuphucula iimpawu zabo ze-rheological.
I-HPMC isebenza njenge-thickener kunye ne-stabilizer, inika ukuziphatha kwe-pseudoplastic kwi-adhesive okanye grout.
Le pseudoplasticity inciphisa ukuthoba okanye ukuthoba ngexesha lokufakwa kwesicelo, iqinisekisa ukhuseleko olungcono kunye nokufana.
Ukomelezwa koBonding Amandla:
I-HPMC inegalelo kumandla okudibanisa i-tile adhesives ngokuphucula uqhagamshelwano phakathi kwe-adhesive kunye ne-substrate.
Iimpawu zayo zokugcinwa kwamanzi ziqinisekisa i-hydration eyaneleyo yezinto ze-cementitious, ukukhuthaza ukunyanga okufanelekileyo kunye nokubambelela.
Ukongeza, i-HPMC inokuguqula i-microstructure ye-adhesive, iphucula iimpawu zayo zomatshini kunye namandla okunamathela.
Ukuxhathisa kweSag:
Ubume be-pseudoplastic ye-HPMC inika ukuziphatha kwe-thixotropic kwi-adhesives tile kunye ne-grouts.
Thixotropy ibhekisela kwipropati yokuba i-viscous encinci phantsi koxinzelelo lwe-shear kwaye ibuyele kwi-viscosity ephezulu xa uxinzelelo lususiwe.
Oku kuziphatha kwethixotropic kuphucula ukuxhathisa kwe-sag ngexesha lokusetyenziswa ngokuthe nkqo, kuthintela i-adhesive okanye i-grout ekutyibilikeni kwi-substrate ngaphambi kokunyanga.
Ukuqina kunye nokusebenza:
I-HPMC iphucula ukuqina kunye nokusebenza kwezinto zokuncamathelisa iithayile kunye ne-grouts ngokubonelela ngokuphuculwa kokuxhathisa kwamanzi kunye nokuncipha kokuncipha.
Iimpawu zayo zokugcina amanzi zithomalalisa umngcipheko wokomiswa kwangaphambi kwexesha kunye nokuqhekeka kweentanda, okukhokelela kufakelo olomeleleyo noluhlala ixesha elide.
I-HPMC inokuba negalelo ekubunjweni kwe-microstructures exineneyo kunye efanayo, iphucula ngakumbi ukuchasana nokungena kokufuma kunye noxinzelelo lomatshini.
IHydroxypropyl Methylcellulose (HPMC) idlala indima ebalulekileyo kwizinto zokuncamathelisa iithayile kunye neegrouts ngokuphucula ukusebenza kwazo, ukomelela kwebhondi, ukunganyangeki, kunye nokuqina. Iipropati zayo zokugcina amanzi, ezidityaniswe neziphumo zayo ze-rheological, zenza ukuba ibe yinto edityanisiweyo yokudibanisa ukufezekisa ukusebenza kakuhle kunye nomgangatho wofakelo lweethayile.
Ixesha lokuposa: May-24-2024