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 kwimiqulu ye-putty eludongeni yimpawu zayo ezigqwesileyo zokugcina amanzi. I-HPMC yipolymer ye-hydrophilic, ithetha 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 lenkqubo yokunyanga.
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 ukusasazeka kunye nokugudisa kwi-substrate. Oku kuyingenelo ngokukhethekileyo kumsebenzi wokwakha, apho abasebenzi basenokufuna 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 ezifakwa eludongeni eziqulathe i-HPMC zinokuchasana okuphezulu kwi-sag, ziqinisekisa usetyenziso olulinganayo kwaye olungaguquguqukiyo, ngakumbi kwindawo ethe nkqo kunye nephakamileyo. 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 okulungileyo 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