yazisa:
Ii-cellulose ethers zisetyenziswa kakhulu kwishishini lokwakha ngenxa yokuba zigcina amanzi kakuhle, ziqine kwaye zibophane. Ziphucula ukuhamba kunye nokusebenziseka kwezinto ezisekwe kwisamente kwaye ziphucula iimpawu zoomatshini zemveliso yokugqibela. Ii-putties zihlala zisetyenziswa kwishishini lokwakha ukugcwalisa imingxunya, imingxunya kunye nezinye iziphene ezindongeni nakwiisilingi. Ukusetyenziswa kwee-cellulose ethers kwi-putty powders kunokuphucula ukusebenza kakuhle, ixesha lokubeka kunye nomgangatho uwonke wemveliso. Eli nqaku liza kuxoxa ngempembelelo ye-viscosities ezahlukeneyo ze-cellulose ethers kwi-putty powder.
Iintlobo ze-cellulose ethers:
Kukho iintlobo ezahlukeneyo ze-cellulose ethers kuquka i-methylcellulose (MC), i-hydroxypropylmethylcellulose (HPMC), i-ethylcellulose (EC) kunye ne-carboxymethylcellulose (CMC). I-HPMC yi-cellulose ether edumileyo kwishishini lokwakha ngenxa yokuba igcina amanzi kakuhle, ityeba kwaye ineempawu zokuncamathelisa. I-HPMC iza ngeendlela ezahlukeneyo, ukusuka kwezantsi ukuya phezulu.
Isiphumo se-cellulose ether kwi-putty powder:
I-Putty powder isetyenziselwa ukuzalisa imingxunya, imingxunya kunye nezinye iziphene ezindongeni nakwiisilingi. Ukusetyenziswa kwe-cellulose ethers kwi-putty powders kunokuphucula ukusebenza kakuhle kunye nexesha lokubeka imveliso. I-Cellulose ether inokuphucula ukusebenza kakuhle kunye nokunamathela kwe-putty powder. Oku kulandelayo yimpembelelo ye-viscosities ezahlukeneyo ze-cellulose ethers kwi-putty powder:
1. I-HPMC ethambileyo nethambileyo:
I-HPMC ethambileyo inokuphucula ukutyibilika nokusebenza kakuhle kwe-putty powder. Ikwaphucula nexesha lokuseta imveliso. I-HPMC ene-viscosity ephantsi inobushushu obuphantsi be-gelation, nto leyo enokuthintela i-putty powder ukuba iqine ngokukhawuleza. Ingaphucula nokunamathelana kwemveliso. I-HPMC ethambileyo ifanelekile kwi-putty powder efuna ukusebenza kakuhle kunye nokuthamba.
2. I-HPMC enobungqindilili obuphakathi:
I-HPMC enoburhabaxa obuphakathi inokuphucula iipropati ze-thixotropic ze-putty powder. Ingaphucula nokugcinwa kwamanzi kunye nokusebenza kokubopha kwemveliso. I-HPMC enoburhabaxa obuphakathi inokuphucula iipropati zoomatshini zemveliso, ezinje ngamandla kunye nokuqina. Ifanelekile kwi-putty powder efuna ukugcinwa kakuhle kwamanzi kunye nokuhambelana.
3. I-HPMC ene-viscosity ephezulu:
I-HPMC enoburhabaxa obuphezulu inokuphucula ukusebenza komgubo we-putty ukutyeba kunye nokusebenza okuchasene nokuwa. Ingaphucula nokugcinwa kwamanzi kunye nokusebenza kokubopha kwemveliso. I-HPMC enoburhabaxa obuphezulu inokuphucula iimpawu zoomatshini zemveliso, ezinje ngamandla kunye nokuqina. Ifanelekile kwi-putty powder efuna ukuqina okuphezulu kunye nokusebenza okuchasene nokuwa.
ukuququmbela:
Ii-cellulose ethers zisetyenziswa kakhulu kwishishini lokwakha ngenxa yokuba zigcina amanzi kakuhle, ziqine kwaye zibophane. I-HPMC iye yaba yi-cellulose ether edumileyo kwishishini lokwakha ngenxa yeempawu zayo ezintle. I-HPMC iza ngeendlela ezahlukeneyo zokukhanya, ukusuka kwezantsi ukuya kwephezulu. Ukusetyenziswa kwee-cellulose ethers ezineempawu ezahlukeneyo zokukhanya kunokuphucula ukusebenza, ixesha lokubeka, ukusebenza kwe-thixotropic, ukugcinwa kwamanzi, ukusebenza kwe-bonding kunye neempawu zoomatshini ze-putty powder. Ukusetyenziswa kwee-cellulose ethers kunokuphucula umgangatho kunye nokusebenza kwee-putty powders, okwenza zifaneleke kwiindlela ezahlukeneyo zokusetyenziswa kwishishini lokwakha.
Ixesha lokuthumela: Julayi-20-2023