IHydroxypropyl methylcellulose (HPMC) sisongezo esisebenza ngeendlela ezininzi esisetyenziswa kakhulu kushishino lolwakhiwo, ngakumbi kulwakhiwo lweputty eludongeni.HPMC inika iingenelo ezininzi ezinceda ukuphucula ukusebenza kunye nomgangatho putty eludongeni.Nazi iingenelo ezintathu eziphambili zokusebenzisa i-HPMC kwi-putty eludongeni:
Ukugcinwa kwamanzi kunye nokungaguquguquki:
Enye yeenzuzo eziphambili zokubandakanya i-HPMC kwimixube ye-putty eludongeni yimpawu zayo ezigqwesileyo zokugcina amanzi.I-HPMC yipolymer ye-hydrophilic, oku kuthetha ukuba inobudlelwane obuqinileyo bamanzi.Xa ifakwe kwi-putty eludongeni, i-HPMC yenza ifilimu yokugcina amanzi ejikeleze amaqhekeza e-samente, ukuthintela amanzi ukuba aphume ngokukhawuleza ngexesha lokunyanga.
Ukukwazi kwe-HPMC ukugcina ukufuma kumxube kuneenzuzo ezininzi kwizicelo ze-putty eludongeni.Okokuqala kunye nokuphambili, iphucula ukusebenza kwe-putty kwaye yandisa ixesha layo elivulekileyo, okwenza kube lula ukusabalalisa kunye nokugudisa kwi-substrate.Oku kuyingenelo ngokukhethekileyo kumsebenzi wokwakha, apho abasebenzi banokufuna ixesha elingakumbi lokufaka izicelo baze bagqibezele ukwakhiwa kodonga ngaphambi kokuba lubekwe.
Ukongeza, umthamo we-HPMC wokubamba amanzi unceda ukuphucula ukunamathela kwi-putty kwi-substrate.Ubukho bexesha elide lwamanzi luqinisekisa ukuchithwa okufanelekileyo kweengqungquthela ze-samente, okubangela ukuba kubekho ibhondi eqinile kunye nexesha elide phakathi kwe-putty eludongeni kunye nomgangatho ophantsi.Oku kubalulekile ekusebenzeni kwexesha elide kunye nokuthembeka kwe-putty eludongeni esetyenziswayo.
Phucula umanyano kunye nokuxhathisa i-sag:
I-HPMC isebenza njenge-thickener kunye ne-binder kulwakhiwo lwe-putty eludongeni, iphucula ubumbano lwemathiriyeli.Ubukho be-HPMC bunceda ukugcina ingqibelelo kunye nolwakhiwo lwe-putty, luyithintele ekubeni igxumeke okanye idilike xa isetyenziswa kumphezulu othe nkqo.Oku kubaluleke kakhulu kwizicelo eziphezulu okanye xa usebenza kwiindonga kwii-angles ezahlukeneyo.
Iipropati ezityebileyo ze-HPMC zinceda ukwandisa ubukhulu kunye nokuhambelana kwe-putty eludongeni, ukuyivumela ukuba ibambelele ngokufanelekileyo kwi-substrate ngaphandle kokubaleka okanye ukuvuza.Ngenxa yoko, izinto zokubeka eludongeni eziqulathe i-HPMC zinokuchasana okuphezulu kwi-sag, ziqinisekisa usetyenziso olulinganayo kwaye olungaguquguqukiyo, ngakumbi kwiindawo ezithe nkqo neziphakamileyo.Le propati iququzelela ukugqitywa okugudileyo kunye nobuhle obuhle.
Ukongeza, ubumbano oluphuculweyo olubonelelwa yi-HPMC lunceda udonga lwe-putty luxhathise ukuqhekeka.I-polymer yenza ifilimu eguquguqukayo ehambisa ukunyakaza okuncinci kwi-substrate, ukunciphisa amathuba okuqhekeka kwexesha.Le nto iphambili ekusebenzeni kwe-putty eludongeni, njengoko iintanda zinokuchaphazela ukubonakala kunye nokuqina kwengubo esetyenzisiweyo.
Ukubambelela okongeziweyo kunye namandla okudibanisa:
Ukubambelela yinto ephambili ekusebenzeni kwe-putty eludongeni, echaphazela ngokuthe ngqo amandla okudibanisa phakathi kwe-putty kunye ne-substrate.I-HPMC idlala indima ebalulekileyo ekuphuculeni ukunamathela ngokwenza ifilimu ehambelanayo neguquguqukayo ekhuthaza ukunamathela okuqinileyo kobuso.
Amandla okugcina amanzi e-HPMC aqinisekisa ukuba amanzi aneleyo akhoyo kwi-hydration yamasuntswana e-samente, ukukhuthaza ukubunjwa kobudlelwane obuqinileyo phakathi kwe-putty eludongeni kunye ne-substrate.Oku kubaluleke ngakumbi xa ufaka i-putty kwiindawo ezivulekileyo okanye ezicela umngeni, apho ukufumana ukunamathela kakuhle kunokuba ngumngeni.
Ukongeza, i-HPMC inceda ukunciphisa ukuncipha ngexesha lokumisa kunye nenkqubo yokunyanga i-putty eludongeni.Ukunciphisa i-shrinkage kunceda ukugcina uqhagamshelwano phakathi kwe-putty kunye ne-substrate, ngakumbi ukomeleza amandla ebhondi.Isiphumo siludonga lwe-putty olubambelela ngokuqinileyo kwiindawo ezahlukeneyo, ukubonelela ukusebenza okuhlala ixesha elide kunye nokuchasana ne-peeling okanye i-delamination.
IHydroxypropyl methylcellulose (HPMC) ibonelela ngeenzuzo ezininzi ezibalulekileyo xa idityaniswe kwimixube eyenziwe eludongeni.Iipropathi zayo zokugcina amanzi zonyusa ukusebenza kunye nokuncamathela, ngelixa ukutyeba kwayo kunye nokubophelela izakhono kunceda ukuphucula ubumbano kunye nokuxhathisa i-sag.Ukusetyenziswa kwe-HPMC ekuqulunqweni kwe-putty eludongeni kunokubonelela kwishishini lolwakhiwo ngokuhlala ixesha elide, elihle kunye nomgangatho ophezulu wokutyalwa kwemigangatho yangaphakathi kunye nengaphandle.
Ixesha lokuposa: Nov-28-2023