Udaka olomileyo, olukwabizwa ngokuba yi-wall putty, ngumxube osetyenziselwa ukugudisa kunye nomgangatho wangaphakathi kunye neendonga zangaphandle ngaphambi kokupeyinta.Enye yezinto eziphambili zodaka olomileyo yi-hydroxypropyl methylcellulose (HPMC), esebenza njenge-thickener kunye ne-binder.Xa uvelisa i-putty powder dry mortar, ukhetho oluchanekileyo lwe-HPMC viscosity lubaluleke kakhulu ukuqinisekisa umgangatho wemveliso yokugqibela.
I-HPMC yi-ether ye-cellulose, elungiswa ngokunyanga i-cellulose nge-alkali kwaye isabela nge-methyl chloride kunye ne-propylene oxide.I-HPMC yimathiriyeli eguquguqukayo edla ngokusetyenziswa kwiintlobo ngeentlobo zezicelo, kubandakanywa kushishino lolwakhiwo lwemveliso ye-putty dry mortars.I-HPMC iphucula ukusebenza kwe-putty powder udaka olomileyo ngokunyusa ukugcinwa kwamanzi, ukusebenza kunye nokusebenza ngokubambisana.
I-viscosity ye-HPMC yinto ephambili yokumisela ukusebenza kwe-putty powder dry mortar.I-Viscosity ngumlinganiselo wokuxhathisa kolwelo ukuba ungampompozi, odla ngokubonakaliswa nge-centipoise (cP).I-HPMC ifumaneka kwii-viscosities ukusuka kwi-100 cP ukuya kwi-150,000 cP kwaye, ngokuxhomekeke kwisicelo, amabakala ahlukeneyo e-HPMC ayafumaneka ngee-viscosities ezahlukeneyo.
Xa uvelisa i-putty powder dry mortar, ukhetho lwe-viscosity ye-HPMC kufuneka luxhomekeke kwizinto ezininzi, ezifana nohlobo lwezinye izithako, ukuhambelana kodaka olufunwayo, kunye neemeko zokusingqongileyo.Ngokubanzi, ii-HPMC ze-viscosity eziphezulu zisetyenziselwa udaka olungqindilili kunye nobunzima, ngelixa ii-HPMC ze-viscosity esezantsi zisetyenziselwa udaka oluncinci kunye nokhaphukhaphu.
Enye yeenzuzo eziphambili zokusebenzisa i-HPMC kwi-putty mortars eyomileyo kukukwazi kwayo ukwandisa ukugcinwa kwamanzi.I-HPMC ifunxa kwaye igcine ukufuma, enceda ukuthintela udaka ukuba lome ngokukhawuleza.Oku kubaluleke kakhulu kwiindawo ezishushu, ezomileyo, njengoko udaka lunokoma ngokukhawuleza, lubangele ukuqhekeka kunye nokunamathela kakubi.I-viscosity ephezulu HPMCs ziyakwazi ukugcina amanzi amaninzi, okwenza ukuba afaneleke ngakumbi ukusetyenziswa kwiimeko ezomileyo.
Enye ipropathi ebalulekileyo ye-HPMC kukukwazi kwayo ukuphucula ukusebenza.I-HPMC isebenza njenge-lubricant, isenza kube lula ukuba udaka lusasazeke kwaye lunciphise umzamo ofunekayo ukufikelela kwindawo egudileyo.I-HPMCs ye-viscosity esezantsi isetyenziselwa ukuqhubekeka lula, ngelixa ii-HPMC ze-viscosity eziphezulu zisetyenziselwa izicelo ezinzima.
Ukongeza ekugcinweni kwayo kwamanzi kunye nokusebenza, i-HPMC inokuphucula ukusebenza kwe-bonding ye-putty powder dry mortar.I-HPMC ibonelela ngeqhina eliqinileyo phakathi kodaka kunye nomphezulu opeyintwayo, ukuqinisekisa ukuba udaka luhlala kwindawo kwaye aluqhekezi okanye lugqabhuke.Ukukhethwa kwe-viscosity ye-HPMC kuya kuba nefuthe kumgangatho wokubambelela owenziwe ngodaka, kunye ne-viscosity ephezulu ye-HPMCs ngokubanzi inikezela ukunamathela okungcono.
Ngokubanzi, ukhetho lwe-HPMC viscosity luyingqwalasela ebalulekileyo xa uvelisa i-putty powder udaka olomileyo, kwaye kufuneka luqhutywe ngokwezicelo ezithile kunye neemeko zokusingqongileyo.Ngokukhetha ibakala elichanekileyo le-HPMC, ukugcinwa kwamanzi, ukusetyenzwa kunye neepropathi ezibophelelayo zodaka kunokuphuculwa, kuqinisekiswe ukugqitywa komgangatho ophezulu.Ngokukhetha okuchanekileyo kwe-viscosity ye-HPMC, kunokwenzeka ukuvelisa i-putty mortar eyomileyo yomgangatho ohambelanayo enokusetyenziswa ngokulula nangokufanelekileyo kwiintlobo ezahlukeneyo zezicelo zokwakha.
Ixesha lokuposa: Jul-28-2023