IHydroxypropyl Methylcellulose njengama-ejenti ahlukanisayo, imikhiqizo etholiwe inezinhlayiya ezihlelekile nezixekethile, ukuminyana okubonakalayo okufanelekile nokusebenza okuhle kakhulu kokucubungula.Kodwa-ke, ukusetshenziswa kwe-Hydroxypropyl Methylcellulose iyodwa kungaba nomthelela ekushintshashintsheni okuhle kwe-resin.Ukusebenza okuphelele kwe-resin kubi.Ukusetshenziswa okuhlanganisiwe kwe-hydroxypropyl methylcellulose kanye neziqu eziningana ezahlukene ze-alcoholsis ye-polyvinyl alcohol kungenza ukusebenza kwemikhiqizo kube ngcono, ikhwalithi kulula ukuyilawula futhi ngesikhathi esifanayo kunganciphisa izindleko.I-ejenti ehlakazayo iyisici esiyinhloko esithonya ukwakheka kwezinhlayiyana ze-polyvinyl chloride resin.Uma kuncane ukungezwani okungaphezulu kwesisombululo esinamanzi sezinto ezijwayelekile ezihlakazayo kanye nokungezwani phakathi kobuso ne-Vinyl chloride monomer, kulapho amaconsi e-VCM angahlakazeka kalula.Futhi ngaleyo ndlela ububanzi bezinhlayiya ze-PVC resin buzoba buncane.Lapho amandla okuvikela e-ejenti ehlakazayo anamandla, yilapho izinhlayiya ze-PVC ezitholakalayo zizoba seduze futhi i-porosity izoba yincane.Futhi i-intergranular coalescence nayo inzima kakhulu, ngakho-ke kulula ukwenza ama-resin.
Isibonelo, ohlelweni lokuhlakazeka kwenhlanganisela ye-PVA ne-HPC, lapho izinga le-alcoholsis le-PVA liphezulu, kuzoba mkhulu ukushuba kwesisombululo samanzi futhi amandla okuvikela azoba namandla, kuyilapho ukuhlushwa okuthile kwe-hydroxypropyl methylcellulose umphumela omuhle wokuhlakaza.Ngakho-ke, ukusebenzisa i-PVA eneziqu eziphezulu ze-alcoalysis njengesisekelo sokuqala
i-ejenti ehlakazayo, kanye nokuhlanganisa a
inani elithile le-hydroxypropyl methylcellulose
njenge-ejenti ehlakazayo ye-polymerization yokumiswa, kulula ukulungisa i-PVC resin engahlangabezana nezidingo ze-particle morphology.Isibonelo, ohlelweni lokuhlakazeka kwenhlanganisela ye-PVA ne-HPC, lapho izinga le-alcoholsis le-PVA liphezulu, kuzoba mkhulu ukushuba kwesisombululo samanzi futhi amandla okuvikela azoba namandla, kuyilapho ukuhlushwa okuthile kwe-hydroxypropyl methylcellulose umphumela omuhle wokuhlakaza.
Isikhathi sokuthumela: Mar-17-2022