Ingxube engashoni, edlala indima ebalulekile ekwenzeni ngcono ukusebenza kodaka oluxutshwe okomile, ibiza ngaphezu kuka-40% wezindleko zempahla odakeni oluxutshwe okomile.Iningi lezixube emakethe yasekhaya lihlinzekwa ngabakhiqizi bangaphandle, futhi umthamo wereferensi wemikhiqizo unikezwa abahlinzeki.Izindleko zomkhiqizo wodaka oxutshwe okomile zihlala ziphezulu ngaleyo ndlela, futhi kunzima ukwazisa ubukhazikhazi obuvamile nodaka lokuplasta ngenani elikhulu nobubanzi obubanzi.Imikhiqizo yezimakethe ezisezingeni eliphezulu ilawulwa yizinkampani zakwamanye amazwe, kanti abakhiqizi bakadaka oluxutshwe okomile banenzuzo ephansi kanye nokungabizi kahle kwentengo;ukusetshenziswa kwezingxube akunalo ucwaningo oluhlelekile noluqondisiwe, futhi lulandela ngokungaboni amafomula angaphandle.Lapha, esikwabelana nawe ukuthi, iyini indima ye-hydroxypropyl methylcellulose emixubeni evamile yodaka oluxutshwe owomile?
IHydroxypropyl methylcellulose iwuhlobo lwe-cellulose okukhishwa kwayo nokusetshenziswa kwayo kukhule ngokushesha eminyakeni yamuva.I-Hydroxypropyl methylcellulose yenziwe ngokotini ocolisisiwe ngemva kokwelashwa kwe-alkalization, kusetshenziswa i-propylene oxide ne-methyl chloride njengama-etherification agents, i-non-ionic cellulose exutshwe i-ether eyenziwe ngochungechunge lokusabela.Izinga lokushintsha ngokuvamile liyi-1.2 ~ 2.0.Izakhiwo zayo zihlukile kuye ngesilinganiso sokuqukethwe kwe-methoxyl nokuqukethwe kwe-hydroxypropyl.Izici ze-hydroxypropyl methylcellulose zimi kanje:
1. IHydroxypropyl methylcellulose incibilika kalula emanzini abandayo, futhi izohlangabezana nobunzima ekuncibilikeni emanzini ashisayo.Kodwa izinga lokushisa layo le-gelation emanzini ashisayo liphakeme kakhulu kunalelo le-methyl cellulose.I-solubility emanzini abandayo nayo ithuthuke kakhulu uma iqhathaniswa ne-methyl cellulose.
2. I-viscosity ye-hydroxypropyl methylcellulose ihlobene nesisindo sayo samangqamuzana.Isisindo samangqamuzana sikhulu, ukuphakama kwe-viscosity.Ukushisa nakho kuthinta i-viscosity yayo, njengoba izinga lokushisa likhuphuka, i-viscosity iyancipha.Kodwa-ke, ithonya le-viscosity yayo ephezulu kanye nezinga lokushisa liphansi kunalelo le-methyl cellulose.Isixazululo saso sizinzile uma sigcinwe ekamelweni lokushisa.
3. Ukugcinwa kwamanzi kwe-hydroxypropyl methylcellulose kuncike enanini layo elingeziwe, i-viscosity, njll., futhi izinga layo lokugcinwa kwamanzi ngaphansi kwenani elifanayo lokwengezwa lingaphezulu kwele-methyl cellulose.
4. I-Hydroxypropyl methylcellulose izinzile ku-asidi ne-alkali, futhi isisombululo sayo esinamanzi sizinzile kakhulu ebangeni le-pH=2~12.I-Caustic soda namanzi e-lime anomthelela omncane ekusebenzeni kwawo, kodwa i-alkali ingasheshisa ukuchithwa kwayo futhi ikhulise kancane i-viscosity yayo.IHydroxypropyl methylcellulose izinzile kusawoti ovamile, kodwa lapho ukuhlangana kwesixazululo sikasawoti kuphezulu, i-viscosity ye-hydroxypropyl methylcellulose solution ivame ukwanda.
5. I-Hydroxypropyl methylcellulose ingaxutshwa nama-polymers ancibilika emanzini ukuze kwakhe isixazululo se-uniform kanye ne-viscosity ephakeme.Okufana ne-polyvinyl alcohol, isitashi ether, ushingamu wemifino, njll.
6. I-Hydroxypropyl methylcellulose inokumelana ne-enzyme engcono kune-methylcellulose, futhi kungenzeka ukuwohloka kwe-enzymatic yesisombululo sayo kungaphansi kwe-methylcellulose.
7. Ukunamathela kwe-hydroxypropyl methylcellulose ekwakhiweni kodaka kuphakeme kunaleyo ye-methylcellulose.
Isikhathi sokuthumela: May-09-2023