IHydroxypropyl Methylcellulose (HPMC)i-ether ye-cellulose engekho i-ionic, esetyenziswa ngokubanzi kwizinto zokwakha, ngokukodwa kwi-mortar yokulungisa. Njengesongezo sokusebenza okuphezulu, i-HPMC isetyenziswa ikakhulu njengento yokugcina amanzi, i-thickener, i-lubricant kunye ne-binder, kwaye ineenzuzo ezicacileyo ekuphuculeni ukusebenza kodaka lokulungiswa.
1. Iimpawu ezisisiseko ze-HPMC
I-HPMC yikhompawundi yepolymer eguqulweyo ukusuka kwiselulosi yendalo ngothotho lweempendulo zemichiza. Isakhiwo sayo se-molecular iqukethe amaqela afana ne-methoxy (-OCH₃) kunye ne-hydroxypropyl (-CH₂CHOHCH₃). Ubukho kwezi substituent inika HPMC ukunyibilika elungileyo kunye nozinzo, ukuvumela ukuba ukunyibilika ngokukhawuleza emanzini abandayo ukwenza ulwelo viscous elubala. Inozinzo oluhle lwe-thermal, ukuzinza kwe-enzymatic kunye nokuguquguquka okuqinileyo kwi-acids kunye ne-alkali, kwaye isetyenziswa ngokubanzi kwizinto zokwakha, iingubo, amayeza, ukutya kunye namanye amashishini.
2. Indima ye-HPMC ekulungiseni udaka
Ukuphucula ukugcinwa kwamanzi
Emva kokongeza i-HPMC kumdaka wokulungisa, ukusebenza kwayo okugqwesileyo kokugcinwa kwamanzi kunokulibazisa kakhulu ukulahleka kwamanzi kunye nokuqinisekisa ukuhanjiswa kwesamente okwaneleyo. Oku kubaluleke kakhulu kulwakhiwo olucekethekileyo okanye indawo ezomileyo ezinobushushu obuphezulu, nto leyo enceda ukuthintela iingxaki ezinjengokuqhekeka kunye nokuncipha, nokuphucula ukuxinana kunye nophuhliso lwamandla odaka.
Ukuphucula ukusebenza
I-HPMC inokuphucula ngokufanelekileyo ukuthambisa kunye nokusebenza kodaka, ukwenza udaka lokulungisa lube lula ngexesha lenkqubo yesicelo, lula ukusebenza kunye nefom. Umphumo wayo wokuthambisa unciphisa ukuchasana kwesixhobo ngexesha lokwakha, okunceda ukuphucula ukusebenza kakuhle kokwakhiwa kunye nokugqiba umphezulu.
Ukuphucula ukusebenza kwebhondi
Udaka lokulungiswa luhlala lusetyenziselwa ukulungisa iindawo ezindala ezisisiseko, ezifuna ukuhlangana okuhle phakathi kodaka kunye nesiseko. Isiphumo sokutyeba se-HPMC siphucula ukudityaniswa phakathi kodaka kunye nesiseko, ukunciphisa umngcipheko wokugoba kunye nokuwa, ngakumbi xa kusakhiwa kwiindawo ezikhethekileyo ezifana nomphezulu othe nkqo okanye iisilingi.
Ukulawula ukungaguquguquki kunye nokuchasana nokunciphisa
Isiphumo sokuqina kwe-HPMC sinokulawula ngokufanelekileyo ukuhambelana kodaka, kwenze ukuba kungabi lula ukugxumeka okanye ukutyibilika xa kufakwe kwindawo ethe nkqo okanye ethambekele, kunye nokugcina uzinzo lodaka kumanqanaba okuqala okwenziwa. Oku kubalulekile ekuphuculeni umgangatho wolwakhiwo kunye nokuphumeza ukulungiswa kakuhle.
Ukomelezwa kokumelana nokuqhekeka
Ekubeni i-HPMC iphucula ukugcinwa kwamanzi kunye nokuguquguquka kodaka, inokucotha inkqubo yokunciphisa, ngaloo ndlela ithintele ngokufanelekileyo ukubunjwa kweentanda ze-shrinkage kunye nokuphucula ukuqina ngokubanzi kwendawo yokulungisa.
3. Ukwenziwa kwesicelo kunye neengcebiso zedosi
Kwizicelo ezizizo, idosi ye-HPMC idla ngokuba yi-0.1% ukuya kwi-0.3% yobunzima bodaka. Idosi ethile kufuneka ihlengahlengiswe ngokohlobo lodaka, indawo yokwakha kunye nokusebenza okufunekayo. Idosi engonelanga ayinakudlala indima yayo efanelekileyo, ngelixa idosi egqithisileyo inokubangela ukuba udaka lube lukhulu, lwandise ixesha lokumisela, kwaye luchaphazele amandla okugqibela.
Ukufezekisa isiphumo esihle, kuyacetyiswa ukuba uyisebenzise ngokudibanisa nezinye izongezo ezifana ne-latex powder, i-water reducer, i-anti-cracking fiber, njl., kunye nokwandisa uyilo lwefomula ngokwenkqubo yokwakha kunye neemfuno.
Ukusetyenziswa kweHPMCekulungiseni udaka ibe yindlela ebalulekileyo yokuphucula ukusebenza kwemveliso. Ukugcinwa kwayo kwamanzi okugqwesileyo, ukuqina, ukusebenza kunye nokubambelela akuphuculi nje kuphela umphumo wokusetyenziswa kodaka, kodwa nokubonelela ngenkxaso yobugcisa bokwakhiwa kokulungiswa kwiindawo ezinzima. Njengoko ishishini lokwakha liqhubeka nokwandisa iimfuno zalo zokusebenza kwezixhobo zokulungisa, ixabiso lesicelo se-HPMC liya kubonakala ngakumbi, kwaye liya kuba licandelo elibalulekileyo eliyimfuneko kwinkqubo yodaka oluphezulu lwexesha elizayo.
Ixesha lokuposa: Apr-04-2025