IHydroxypropyl methylcellulose (HPMC) sisongezo esisetyenziswa kakhulu kushishino lokwakha, ngakumbi kudaka. Njengekhompawundi ephezulu yeemolekyuli, i-HPMC ineempawu ezenza ukuba isebenze kakuhle ekugcinweni kwamanzi, ukuqina, ukuthambisa, ukuzinza kunye nokuphucula ukubambelela.
(1) Iipropati zeMichiza kunye nendlela yokusebenza ye-HPMC
I-HPMC yi-ether ye-cellulose engeyo-ionic efunyenwe ngokuguqulwa kweekhemikhali zeselulosi yendalo. Amaqela e-hydroxypropyl kunye ne-methyl kwisakhiwo sayo se-molecular inika ukunyibilika okulungileyo kunye ne-viscosity. Ezi zakhiwo zekhemikhali zenza ukuba i-HPMC idlale indima ebalulekileyo kudaka:
1.1 Ugcino lwamanzi
Ukusebenza kokugcinwa kwamanzi kwe-HPMC ikakhulu kuvela kumaqela e-hydrophilic kwisakhiwo sayo se-molecular. La maqela anokwenza iibhondi ze-hydrogen kunye neemolekyuli zamanzi, ngaloo ndlela zibhengeza ngokufanelekileyo kunye nokugcina amanzi. Ngexesha lenkqubo yokwakhiwa kodaka, i-HPMC inokunciphisa ukuphuphuma kwamanzi, igcine isiqulatho sokufuma kwidaka, kwaye iqinisekise ukuphendula okupheleleyo kwesamente.
1.2 Ukuqina kwesiphumo
I-HPMC ikwadlala indima etyebileyo kudaka. Isisombululo se-viscous esakhiwe emva kokuchithwa kwayo sinokunyusa ukuhambelana kodaka, okwenza kube lula ukwakha kunye nokubumba. Oku akuphuculi nje kuphela ukusebenza kolwakhiwo lodaka, kodwa kwakhona kunciphisa isenzeko esinciphayo sodaka kumphezulu othe nkqo.
1.3 Ifuthe lokuthambisa kunye nokuzinzisa
Isiphumo sokuthambisa se-HPMC senza udaka lube lula ngexesha lokuxuba kunye nokwakhiwa, ukunciphisa ubunzima bokwakha. Kwangaxeshanye, i-HPMC inozinzo oluhle, olunokuphucula isakhono sokuchasa ulwahlulo lodaka kunye nokuqinisekisa ukuhanjiswa okufanayo kwamacandelo odaka.
(2) Ukusetyenziswa okuthe ngqo kweHPMC kugcino lwamanzi oludaka
I-HPMC isetyenziswa ngokubanzi kwiintlobo ezahlukeneyo zodaka, kwaye umphumo wayo wokugcinwa kwamanzi unegalelo elibalulekileyo ekuphuculeni ukusebenza kodaka. Ezi zilandelayo zizicelo ezithile ze-HPMC kwiidaka ezininzi eziqhelekileyo:
2.1 Udaka lwesamente oluqhelekileyo
Kudaka oluqhelekileyo lwesamente, isiphumo sokugcina amanzi se-HPMC sinokuthintela ngokufanelekileyo udaka ekuphulukaneni namanzi ngokukhawuleza ngexesha lokwakha, ngaloo ndlela kuthintelwa ingxaki yokuqhekeka kodaka kunye nokulahleka kwamandla. Ngokukodwa kubushushu obuphezulu kunye nokusingqongileyo okomileyo, ukugcinwa kwamanzi kwi-HPMC kubaluleke kakhulu.
2.2 Udaka lwebhondi
Kwi-bonding mortar, isiphumo sokugcinwa kwamanzi kwe-HPMC akuncedi kuphela ukuhanjiswa kwesamente, kodwa kuphucula amandla okudibanisa phakathi kodaka kunye ne-substrate. Oku kubaluleke kakhulu kulwakhiwo lwezixhobo ezifana neethayile kunye namatye, kwaye kunokuthintela ngokufanelekileyo ukwenzeka kwemingxuma kunye nokuwa.
2.3 Udaka oluzilinganisa ngokwalo
Udaka oluzilinganisayo lufuna ubumanzi obulungileyo kunye neempawu zokuzibamba. Imiphumo yokuqina kunye nokugcinwa kwamanzi kwe-HPMC inokuphucula ukusebenza kokwakhiwa kwe-self-leveling mortar, ukuqinisekisa ukuba ayiyi kulahlekelwa ngamanzi ngokukhawuleza ngexesha lokuhamba kunye nenkqubo yokuzimela, ngaloo ndlela iqinisekisa umgangatho wokwakha.
2.4 Udaka lwe-insulation
Iaggregates ezikhaphukhaphu zihlala zongezwa kudaka lokugquma, nto leyo eyenza ukuba ugcino lwamanzi lubaluleke ngakumbi. Impembelelo yokugcina amanzi ye-HPMC inokuqinisekisa ukuba i-insulation mortar igcina umswakama ofanelekileyo ngexesha lokwakhiwa kunye nokuqina, ukuphepha ukukrazula kunye nokunciphisa, kunye nokuphucula umphumo wokugquma kunye nokuqina kodaka.
(3) Izinto eziluncedo ze-HPMC ekugcineni amanzi ngodaka
3.1 Ukuphucula ukusebenza kolwakhiwo
Ukugcinwa kwamanzi kwisiphumo se-HPMC kudaka kunokuphucula kakhulu ukusebenza kokwakhiwa kodaka. Ukuqina kwayo kunye neziphumo zokuthambisa zenza udaka lube lula ukulusebenzisa kunye nokumila, ukunciphisa ubunzima kunye nokuqina kwabasebenzi ngexesha lenkqubo yokwakha. Ngelo xesha, ukusebenza kokugcinwa kwamanzi kwe-HPMC kunokwandisa ixesha elivulekileyo lodaka, ukunika abasebenzi bokwakha ixesha elide lokusebenza.
3.2 Ukuphucula umgangatho wodaka
Isiphumo sokugcinwa kwamanzi kwe-HPMC inceda ukusabela okupheleleyo kwe-hydration yesamente, ngaloo ndlela kuphuculwe amandla kunye nokuqina kodaka. Ukusebenza kakuhle kokugcinwa kwamanzi kunokuthintela udaka ekuqhekekeni kunye nokuncipha ngexesha lenkqubo yokuqina, ukuqinisekisa umgangatho kunye nomphumo wokwakha.
3.3 Ukongiwa kweendleko
Ukusetyenziswa kwe-HPMC kunokunciphisa inani lesamente kwidaka, ngokunciphisa iindleko zokwakha. Ukusebenza kwayo kokugcina amanzi kwenza ukuba amanzi aseludaka asetyenziswe ngokufanelekileyo, ukunciphisa ilahleko yamanzi kunye nenkunkuma. Kwangaxeshanye, i-HPMC inokunciphisa izinga lokwenziwa ngokutsha kodaka ngexesha lokwakha, iindleko ezongezelelekileyo zokonga.
Ukubaluleka kwe-HPMC ekugcinweni kwamanzi ngodaka kuyabonakala. Iimpawu zayo ezikhethekileyo zeekhemikhali kunye nendlela yokusebenza yenza ukuba idlale indima ebalulekileyo ekuphuculeni ukugcinwa kwamanzi, ukusebenza kokwakhiwa kunye nomgangatho jikelele wodaka. Ngophuhliso lweshishini lokwakha, ukusetyenziswa kwe-HPMC kuya kuba banzi kwaye kunzulu, kwaye kuqhubeka ukufaka isandla ekuphuculeni ukusebenza kunye nokuqinisekiswa komgangatho wodaka kunye nezinye izinto zokwakha.
Ixesha lokuposa: Jul-25-2024