Njengezixhobo zokwakha ezisetyenziswa kakhulu kushishino lokwakha, i-mortar idlala indima ebalulekileyo yokwakha nokusebenza. Ukutyibilika kwe-mortar yenye yeempawu ezibalulekileyo ezichaphazela ukusebenza kwayo ekwakheni. Ukutyibilika okuhle kunceda ekwenzeni imisebenzi yokwakha ibe lula kunye nomgangatho wesakhiwo. Ukuze kuphuculwe ukutyibilika nokusebenza kwe-mortar, izongezo ezahlukeneyo zihlala zisetyenziselwa ukulungisa. Phakathi kwazo,i-hydroxypropyl methylcellulose (HPMC), njengekhompawundi yepolymer enyibilikayo emanzini esetyenziswa rhoqo, idlala indima ebalulekileyo kwi-mortar.
Iimpawu ezisisiseko ze-HPMC: I-HPMC yinto yepolymer enyibilikayo emanzini eyenziwe nge-cellulose yendalo eguqulwe ngamakhemikhali. Inokujiya okuhle kakhulu, i-gelling, ukugcinwa kwamanzi kunye nezinye iimpawu. Ayinyibiliki emanzini, kodwa inokwenza isisombululo esiqinileyo emanzini, ngoko ke isetyenziswa kakhulu ekwakheni, kwiingubo, kumayeza nakwezinye iindawo. Xa isetyenziswa njengesongezelelo se-mortar, i-HPMC inokuphucula ngempumelelo ukunyibilika, ukugcinwa kwamanzi kunye nokusebenza kwe-mortar.
Indlela echaphazela ngayo i-HPMC kwi-mortar fluidity:
Isiphumo sokutyeba: I-HPMC ngokwayo inesiphumo esibalulekileyo sokutyeba. Xa yongezwa kwi-mortar, inokunyusa kakhulu i-viscosity ye-mortar. Isiphumo sokutyeba sibangelwa yi-molecules ze-HPMC ezenza isakhiwo senethiwekhi emanzini, esifunxa amanzi kwaye sande, sinyusa i-viscosity yesigaba samanzi. Le nkqubo ivumela ukuba i-fluidity ye-mortar ilungiswe. Xa umxholo we-HPMC kwi-mortar uphezulu, ukuhamba kwamanzi ngokukhululekileyo kuya kuthintelwa kwinqanaba elithile, ngoko ke i-fluidity iyonke ye-mortar iya kubonisa utshintsho oluthile.
Ukuphucula ukugcinwa kwamanzi: I-HPMC inokwenza ifilimu encinci kwi-mortar ukunciphisa ukufuma kwamanzi nokuphucula ukugcinwa kwamanzi kwi-mortar. I-mortar enokugcinwa kwamanzi okungcono inokugcina ukusebenza ixesha elide, nto leyo ibalulekileyo ekwenzeni kube lula ukwakhiwa ngexesha lokwakhiwa. Ukugcinwa kwamanzi amaninzi kunokuthintela i-mortar ukuba yome ngaphambi kwexesha kwaye kuphucule ixesha lokwakha kunye nokusebenza kakuhle kwe-mortar.
Ukusasazeka: I-HPMC inokwenza isisombululo se-colloidal emanzini, esinokuphucula ukusasazeka phakathi kwezinto ze-mortar. Ukunyibilika kwe-mortar akupheleli nje ekunxulumene nomlinganiselo wesamente, isanti kunye nomxube, kodwa kukwanxulumene ngokusondeleyo nokusasazeka kwezi zinto. Ngokulungisa ubungakanani be-HPMC, izinto ezikwi-mortar zinokusasazeka ngokulinganayo, ngaloo ndlela ziphucula ngakumbi ukunyibilika.
Isiphumo sokujika: I-HPMC inokukhuthaza ukusasazwa ngokulinganayo kwamasuntswana kwi-mortar kwaye iphucule uzinzo lwesakhiwo sayo. Ngokuphucula isiphumo sokujika, i-HPMC inokugcina ukuguquguquka okuzinzileyo kwe-mortar ngexesha lokugcina ixesha elide kwaye ithintele ukwehla kokuguquguquka ngenxa yokulibaziseka kwexesha.
Isiphumo sokuphucula iplastiki: Ukongezwa kwe-HPMC kunokuphucula iplastiki yesamente, okwenza kube lula ukuyisebenzisa kwaye ibe neplastiki engcono ngexesha lenkqubo yokwakha. Umzekelo, xa upenda udonga, ukutyibilika okufanelekileyo kunye neplastiki kunokunciphisa ukuvela kwemifantu kwaye kuphucule umgangatho wokuplasta.
Ukusetyenziswa kwe-HPMC ngendlela elungiselelweyo kulungiso lokuhamba kolwelo lwesamente:
Ulawulo lomlinganiselo: Umlinganiselo we-HPMC uchaphazela ngokuthe ngqo ukutyibilika kodaka. Ngokubanzi, xa ubungakanani bokongeza be-HPMC buphakathi, ukutyibilika kunye nokugcinwa kwamanzi kodaka kunokuphuculwa kakhulu. Nangona kunjalo, i-HPMC egqithisileyo inokubangela ukuba i-viscosity yodaka ibe phezulu kakhulu, nto leyo enciphisa ukutyibilika kwayo. Ke ngoko, ubungakanani be-HPMC eyongeziweyo kufuneka bulawulwe ngokuchanekileyo ngokweemfuno ezithile kwizicelo.
Ukusebenzisana nezinye izinto ezidityanisiweyo: Ukongeza kwi-HPMC, ezinye izinto ezidityanisiweyo zihlala zongezwa kwi-mortar, ezifana nee-superplasticizers, ii-retarders, njl. Ukusebenzisana phakathi kwezi zinto ezidityanisiweyo kunye ne-HPMC kunokulawula ngcono ukuhamba kwe-mortar. Umzekelo, ii-superplasticizers zinokunciphisa ubungakanani bamanzi kwi-mortar kwaye ziphucule ukugeleza kwe-mortar, ngelixa i-HPMC inokuphucula ukugcinwa kwamanzi kunye nokusebenza kolwakhiwo ngelixa igcina i-viscosity ye-mortar.
Ukulungiswa kweentlobo ezahlukeneyo zesamente: Iintlobo ezahlukeneyo zesamente zinemfuno ezahlukeneyo zokuchaneka. Umzekelo, i-plastering mortar ineemfuno eziphezulu zokuchaneka, ngelixa i-masonry mortar inika ingqalelo engakumbi ekubopheleleni kwayo kunye nobukhulu bayo. Ngexesha lale nkqubo, ubungakanani kunye nohlobo lwe-HPMC eyongeziweyo kufuneka lulungiswe kwaye lulungiswe ngokweemfuno zesamente ezahlukeneyo ukuqinisekisa ukuchaneka kunye nokulinganisela okufanelekileyo.
Njengesongezo sedaka esisetyenziswa rhoqo,I-HPMCingakwazi ukulungisa ngokufanelekileyo ukutyibilika kwesamente ngokuyiqinisa, ukugcinwa kwamanzi, ukusasazeka, i-gelling, njl. Iimpawu zayo ezikhethekileyo zenza isamente isebenze ngakumbi kwaye izinzile ngexesha lokwakhiwa. Nangona kunjalo, idosi ye-HPMC kufuneka ilungiswe ngokuchanekileyo ngokweemeko ezithile zokusetyenziswa ukuze kuthintelwe ukusetyenziswa kakhulu okukhokelela ekunciphiseni ukutyibilika. Ngokuphuculwa okuqhubekayo kweemfuno zokusebenza kwesamente kushishino lokwakha, isiphumo sokulawula se-HPMC sinamathuba amaninzi okusetyenziswa kwixesha elizayo.
Ixesha lokuposa: Jan-10-2025