Abavelisi be-HPMC-impembelelo yee-viscosities ezahlukeneyo ze-cellulose ethers kwi-putty powder

Yazisa:

I-cellulose ethers isetyenziswa ngokubanzi kwishishini lokwakha ngenxa yokugcinwa kwamanzi okugqwesileyo, ukuqina kunye neempawu ezidibeneyo. Baphucula ukuhamba kunye nokuqhubekeka kwezinto ezisekelwe kwisamente kunye nokuphucula iimpawu zomatshini wemveliso yokugqibela. Iiputty zisetyenziswa ngokuqhelekileyo kwishishini lokwakha ukuzalisa iintanda, imingxuma kunye nokunye ukungafezeki kwiindonga kunye neesilingi. Ukusetyenziswa kwe-cellulose ethers kwi-putty powders kunokuphucula ukusebenza, ukubeka ixesha kunye nomgangatho jikelele wemveliso. Eli nqaku liza kuxubusha umphumo wee-viscosities ezahlukeneyo ze-cellulose ethers kwi-putty powder.

Iindidi ze-cellulose ethers:

Kukho iintlobo ezahlukeneyo ze-cellulose ethers ezibandakanya i-methylcellulose (MC), i-hydroxypropylmethylcellulose (HPMC), i-ethylcellulose (EC) kunye ne-carboxymethylcellulose (CMC). I-HPMC yi-ether yeselulosi ethandwayo kushishino lokwakha ngenxa yogcino lwamanzi olugqwesileyo, ukutyeba kunye neempawu zokuncamathelisa. HPMC iza viscosities ezahlukeneyo, ukusuka ezantsi ukuya phezulu.

Impembelelo ye-cellulose ether kwiputty powder:

I-putty powder isetyenziselwa ukuzalisa iintanda, imingxuma kunye nokunye ukungafezeki kwiindonga kunye neesilingi. Ukusetyenziswa kwe-cellulose ethers kwi-putty powders kunokuphucula ukusebenza kunye nokubeka ixesha lemveliso. I-ether ye-cellulose inokuphucula ukusebenza kunye nokunamathela kwiputty powder. Oku kulandelayo yimpembelelo yee-viscosities ezahlukeneyo ze-cellulose ethers kwi-putty powder:

1. I-HPMC ye-viscosity ephantsi:

I-viscosity ephantsi ye-HPMC inokuphucula umbane kunye nokusebenza kwe-putty powder. Kwakhona kuphucula ixesha lokumisela imveliso. I-Low-viscosity HPMC ineqondo lokushisa eliphantsi le-gelation, elinokuthintela i-putty powder ekubeni lukhuni ngokukhawuleza. Kwakhona kunokuphucula ukubambelela kunye nokudibanisa kwemveliso. I-viscosity ephantsi ye-HPMC ifanelekile kwi-putty powder efuna ukusebenza kakuhle kunye nokuguda.

2. Medium viscosity HPMC:

I-viscosity ephakathi i-HPMC inokuphucula iimpawu ze-thixotropic ze-putty powder. Kwakhona kunokuphucula ukugcinwa kwamanzi kunye nokusebenza kokubambisana kwemveliso. I-HPMC ye-viscosity ephakathi inokuphucula iimpawu zemishini yemveliso, njengamandla kunye nokuqina. Ifanelekile i-putty powder efuna ukugcinwa kwamanzi okulungileyo kunye nokubambisana.

3. High viscosity HPMC:

I-viscosity ephezulu ye-HPMC inokuphucula ukuqina kunye nokusebenza kwe-anti-sag ye-putty powder. Kwakhona kunokuphucula ukugcinwa kwamanzi kunye nokusebenza kokubambisana kwemveliso. I-viscosity ephezulu ye-HPMC inokuphucula iimpawu zemishini yemveliso, njengamandla kunye nokuqina. Ifanelekile kwi-putty powder efuna ukuqina okuphezulu kunye nokusebenza kwe-anti-sag.

ukuququmbela:

I-cellulose ethers isetyenziswa ngokubanzi kwishishini lokwakha ngenxa yokugcinwa kwamanzi okugqwesileyo, ukuqina kunye neempawu ezidibeneyo. I-HPMC iye yaba yi-ether yeselulosi ethandwayo kushishino lokwakha ngenxa yeepropati zayo ezibalaseleyo. HPMC iza viscosities ezahlukeneyo, ukusuka ezantsi ukuya phezulu. Ukusetyenziswa kwe-cellulose ethers kunye ne-viscosities eyahlukeneyo kunokuphucula ukusebenza, ixesha lokubeka, ukusebenza kwe-thixotropic, ukugcinwa kwamanzi, ukusebenza kwebhondi kunye neempawu zemishini ye-putty powder. Ukusetyenziswa kwe-cellulose ethers kunokuphucula umgangatho kunye nokusebenza kwe-putty powders, okwenza ukuba bafanelekele izicelo ezahlukeneyo kwishishini lokwakha.