Ulondolozo lwemizobo yinkqubo eethe-ethe nentsonkothileyo efuna ukukhethwa ngononophelo kwemathiriyeli ukuze kuqinisekiswe ukugcinwa kunye nemfezeko yamaqhekeza obugcisa. I-cellulose ethers, iqela leekhompawundi ezivela kwi-cellulose, lifumene izicelo kumashishini ahlukeneyo kwiipropati zabo ezizodwa, kubandakanywa ukuqina, ukuzinza, kunye nokugcinwa kwamanzi. Kwindawo yolondolozo lwemizobo, ukhuseleko lwei-cellulose ethersyingqwalasela ebalulekileyo. Olu phononongo olubanzi luhlola imiba yokhuseleko lwe-cellulose ethers, lujolise kwiintlobo eziqhelekileyo ezifana ne-Hydroxypropyl Methylcellulose (HPMC), i-Ethyl Hydroxyethyl Cellulose (EHEC), kunye neCarboxymethyl Cellulose (CMC).
1. IHydroxypropyl Methylcellulose (HPMC)
a. Ukusetyenziswa okuqhelekileyo
I-HPMC isetyenziswa rhoqo kulondolozo lweempawu zayo zokugcina amanzi. Ubume bayo obuguquguqukayo buyenza ifanelekele ukudala i-adhesives kunye ne-consolidants ekubuyiselweni kwezinto zakudala zephepha.
b. Iingqwalasela zoKhuseleko
I-HPMC ngokuqhelekileyo ithathwa njengekhuselekile kulondolozo lwemisebenzi yobugcisa xa isetyenziswa ngobulumko. Ukuhambelana kwayo kunye ne-substrates eyahlukeneyo kunye nokusebenza kwayo ekugcineni ukunyaniseka kwesakhiwo semisebenzi yobugcisa bephepha igalelo ekwamkelweni kwayo kwintsimi yolondolozo.
2. I-Ethyl Hydroxyethyl Cellulose (EHEC)
a. Ukusetyenziswa okuqhelekileyo
I-EHEC yenye i-ether ye-cellulose esetyenziselwa ukulondoloza ukutyeba kunye nokuzinzisa iipropati zayo. Isenokusetyenziswa kwimixube eyahlukeneyo ukufikelela kwiimpawu ezinqwenelekayo.
b. Iingqwalasela zoKhuseleko
Ngokufanayo ne-HPMC, i-EHEC ithathwa njengekhuselekile kwizicelo ezithile zolondolozo. Ukusetyenziswa kwayo kufuneka kuhambelane neemfuno ezithile zomzobo kwaye kube phantsi kovavanyo olucokisekileyo ukuqinisekisa ukuhambelana.
3. I-Carboxymethyl Cellulose (CMC)
a. Ukusetyenziswa okuqhelekileyo
I-CMC, kunye neempawu zayo zokujiya kunye nokuzinzisa, ifumana ukusetyenziswa kumashishini ahlukeneyo, kubandakanywa ulondolozo. Ikhethwe ngokusekelwe kwikhono layo lokuguqula i-viscosity yezisombululo.
b. Iingqwalasela zoKhuseleko
I-CMC ngokubanzi ithathwa njengekhuselekile ngeenjongo ezithile zolondolozo. Inkangeleko yokhuseleko lwayo iyenza ifaneleke ukusetyenziswa kuqulunqo olujoliswe ukuzinzisa nokukhusela imisebenzi yobugcisa, ngakumbi kwiindawo ezilawulwayo.
4. IiNdlela eziGqwesileyo zoLondolozo
a. Uvavanyo
Ngaphambi kokufaka nayiphi na i-ether ye-cellulose kumsebenzi wobugcisa, abalondolozi bagxininisa ukubaluleka kokwenza uvavanyo olucokisekileyo kwindawo encinci, engabonakaliyo. Eli nyathelo liqinisekisa ukuba izinto eziphathekayo zihambelana nomsebenzi wobugcisa kwaye azinayo imiphumo emibi.
b. Uthethwano
Abagcini bezobugcisa kunye neengcali zidlala indima ebalulekileyo ekumiseleni ezona mathiriyeli zifanelekileyo kunye neendlela zolondolozo. Ubuchwephesha babo bukhokelela ekukhethweni kwe-cellulose ethers kunye nezinye izinto zokufezekisa iziphumo ezifunwayo zolondolozo.
5. Ukuthotyelwa kweMimiselo
a. Ukubambelela kwiMigangatho
Izenzo zolondolozo zihambelana nemigangatho ethile kunye nezikhokelo zokuqinisekisa umgangatho ophezulu wokunyamekela imisebenzi yobugcisa. Ukuthotyelwa kwale migangatho kubalulekile ekugcineni ukhuseleko nemfezeko yenkqubo yolondolozo.
6.Isiphelo
i-cellulose ethers ezifana ne-HPMC, i-EHEC, kunye ne-CMC inokuthathwa njengekhuselekile ukugcinwa kwemisebenzi yobugcisa xa isetyenziswe ngokuhambelana nezona ndlela zilungileyo. Ukuvavanya ngokucokisekileyo, ukubonisana neengcali zolondolozo, kunye nokuthotyelwa kwemigangatho kubaluleke kakhulu ekuqinisekiseni ukhuseleko kunye nokusebenza kakuhle kwe-cellulose ethers kulondolozo lwemisebenzi yobugcisa. Njengoko intsimi yolondolozo iguquka, uphando oluqhubekayo kunye nentsebenziswano phakathi kweengcali zifaka isandla ekucokiseni izenzo, ukubonelela amagcisa kunye nabalondolozi ngezixhobo ezithembekileyo zokugcina ilifa lenkcubeko yethu.
Ixesha lokuposa: Nov-22-2023