Masithethe nge-hydroxypropyl methyl celluloseHPMCkunye nendlela yokulinganisa i-viscosity yayo. I-viscosity apha ibhekiselele kwi-viscosity ebonakalayo, eyona nkcazo ebalulekileyo kwi-hydroxypropyl methyl cellulose.
Umgangatho. Iindlela eziqhelekileyo zokulinganisa ukulinganisa i-viscosity ejikelezayo, ukulinganisa i-capillary viscosity kunye ne-viscosity yokuwa. Indlela yokumisela i-hydroxypropyl methyl cellulose yayiyi-capillary adhesion.
Indlela yokuzimisela kwesidanga, usebenzisa i-Uchs viscometer. Ngokuqhelekileyo ukumiselwa kwesisombululo yi-2% yesisombululo samanzi, ifomula yile: V=Kdt. I-V yi-viscosity kwi-mpa. s kunye no-K yi-viscometer engatshintshiyo.
I-D yingxinano kwiqondo lokushisa elingaguqukiyo kwaye i-T lixesha ukusuka phezulu ukuya ezantsi ngokusebenzisa i-viscometer ngemizuzwana. Le ndlela yokusebenza inzima ngakumbi, ukuba kukho into enganyibilikiyo.
Amagama kulula ukubangela iimpazamo, kunzima ukuchonga umgangatho we-hydroxypropyl methyl cellulose. Ngoku isetyenziswa ngokuqhelekileyo ukulinganisa i-viscosity ye-viscometer ye-rotary, ukusetyenziswa ngokubanzi e-China.
Ifomula ye-viscometer ye-NDJ-1 ithi η=Kα. η yi-viscosity, kwakhona kwi-mpa. s, K ngumlinganiso we-viscometer, kwaye α kukufundwa kwesalathisi se-viscometer.
IHydroxypropyl methyl cellulose 2% indlela yokuvavanya i-viscosity:
I-1, le ndlela ifanelekile ukuzimisela kwe-viscosity eguquguqukayo ye-non-Newtonian fluids (isisombululo se-polymer, ukumiswa, i-emulsion dispersion liquid okanye isisombululo se-surfactant, njl.).
2. Izixhobo kunye nezixhobo
2.1 I-viscometer ye-Rotary (i-NdJ-1 kunye ne-NDJ-4 ifunwa yi-Chinese Pharmacopoeia)
2.2 Ubushushu bebhafu yamanzi rhoqo ukuchaneka kweqondo lobushushu 0.10C
2.3 Iqondo lobushushu lokufumana amanqaku yi-0.20C, eqinisekiswa ngamaxesha athile.
2.4 Imitha yee-frequency meters Ii-Viscometers ezisebenzisa iindlela zokuzinzisa amaza (ezifana ne-NDJ-1 kunye ne-NDJ-4) ziya kugcinwa. Ukuchaneka kwe-1%. A
8. Isampulu ye-Og yalinganiswa ngokuchanekileyo kwaye yafakwa kwibhekile eyomileyo, enethoni ye-400mL ubude. Yongeza malunga ne-100mL yamanzi ashushu angama-80-90 kwaye ugxobhoze i-10min ukuze uhlukane.
Ngokulinganayo ukusabalalisa, ugxobhoze kwaye wongeze amanzi abandayo kwi-400mL ngokupheleleyo. Okwangoku, xuba ngokuqhubekayo i-30min ukwenza isisombululo se-2% (W / W), kwaye usibeke efrijini ukuze uhlambe umkhenkce uphole de wenze umkhenkce obhityileyo phezu komhlaba.
Khupha kwaye ubeke kwitanki yobushushu engaguqukiyo ukugcina ubushushu obuphakathi ukuya kuma-20 ℃ 0.1 ℃.
3.1 Ukufakwa kunye nokusebenza kwesixhobo kuya kwenziwa ngokuhambelana nemiyalelo yokusebenza kwesixhobo, kwaye i-rotor efanelekileyo kunye ne-rotor iya kukhethwa ngokoluhlu lwe-viscosity yemveliso evavanyiweyo kunye namalungiselelo e-pharmacopoeia phantsi kombhalo wemveliso.
Isantya sokujikeleza.
3.2 Lungisa ubushushu obungaguqukiyo bamanzi ngokumiselwa phantsi kwento nganye yechiza.
3.3 Imveliso yovavanyo yafakwa kwisitya esichazwe sisixhobo, kwaye i-Angle yokuphambuka (a) yalinganiswa ngokomthetho emva kwemizuzu engama-30 yobushushu obuqhubekayo. Cima injini kwaye uyiqalise kwakhona ukuzimisela kwakhona
Umahluko phakathi kwamaxabiso aphakathi akumele udlule kwi-3%, ngaphandle koko kufuneka kwenziwe umlinganiselo wesithathu.
3.4 Bala ixabiso elilinganisiweyo leemvavanyo ezimbini ngokwefomula yokufumana i-viscosity eguquguqukayo yemveliso evavanyiweyo.
4. Bhala uze ubale
4.1 Rekhoda imodeli ye-viscometer ye-rotary, inombolo ye-rotor kunye nesantya esisetyenzisiweyo, i-viscometer rhoqo (i-K 'value), iqondo lokushisa elilinganisiweyo, kunye nomlinganiselo ngamnye. Ixabiso.
Ifomula yokubala ka-4.2
Dynamic viscosity (MPa”s)=Ka apho i-K isisingqinisiso esihlala silinganiswa ngolwelo oluqhelekileyo lwe-viscosity eyaziwayo kunye no-A yi-Engile yokujika.
Ixesha lokuposa: Apr-25-2024