Me korero mo te hydroxypropyl methyl celluloseHPMCme pehea te ine i tona poiketanga. Ko te pokey i konei e pā ana ki te pokey kitea, he tohu nui ki te hydroxypropyl methyl cellulose.
Paerewa. Ko nga tikanga ine o mua ko te ine ine pokey hurihuri, te ine pokey capillary me te ine pokey taka. Ko te tikanga whakatau o te hydroxypropyl methyl cellulose ko te adhesion capillary.
Ko te tikanga mo te whakatau tohu, ma te whakamahi i te Uchs viscometer. Ko te tikanga ko te whakatau o te otinga he 2% wairewa wai, ko te tauira: V=Kdt. Ko V te pokey i roto i te mpa. Ko te s me te K te taumau o te viscometer.
Ko D te kiato i te pāmahana tuturu, ko T te wa mai i runga ki raro i roto i te viscometer i roto i te hēkona. Ko tenei huarahi mahi he uaua ake, mena he mea koretake.
He ngawari nga kupu ki te he, he uaua ki te tautuhi i te kounga o te hydroxypropyl methyl cellulose. Inaianei kei te whakamahia nuitia ki te ine i te viscosity o te viscometer hurihuri, te whakamahi whanui i Haina.
Ko te tātai o te viscometer NDJ-1 ko η=Kα. Ko te η te viscosity, kei te mpa hoki. s, Ko te K te whakarea o te viscometer, a ko te α te panui o te tohu inenga.
Hydroxypropyl methyl cellulose 2% tikanga whakamatautau pokey:
1, he pai tenei tikanga mo te whakatau i te viscosity hihiri o nga wai kore-Newtonian (he otinga polymer, whakatārewatanga, emulsion dispersion liquid or surfactant solution, etc.).
2. Nga taputapu me nga taputapu
2.1 Ko te Viscometer Rotary (NdJ-1 me NDJ-4 e hiahiatia ana e te Hainamana Pharmacopoeia)
2.2 Te kaukau wai mahana tonu te tika o te pāmahana 0.10C
2.3 Ko te tohu tohu pāmahana he 0.20C, ka whakamanahia i ia wa.
2.4 Mere te auau Viscometers e whakamahi ana i nga ine whakapumau auau (pēnei i te NDJ-1 me te NDJ-4) ka rahuitia. Te tika o te 1%. A
8. I ata paunatia te tauira Og ka maka ki roto i te ipurau maroke 400mL te roa. Taapirihia te 100mL o te wai wera 80-90 nga nekehanga me te whakaoho mo te 10 meneti kia wehea.
Ka marara noa, te whakaoho me te taapiri i te wai matao ki te 400mL katoa. I tenei wa, me whakaoho tonu mo te 30 meneti kia hanga he wairewa 2% (W/W), ka maka ki roto i te pouaka whakamātao mo te pati hukapapa kia whakamatao tae noa ki te hanga tio kikokore ki te mata.
Tangohia ki waho ka maka ki roto i te taika mahana tonu kia mau tonu te pāmahana pokapū ki te 20 ℃ 0.1 ℃.
3.1 Ko te whakaurunga me te mahi o te taputapu ka mahia i runga i nga tohutohu whakahaere o te taputapu, ka tohua te rotor me te rotor e tika ana kia rite ki te awhe pokey o te hua whakamatautau me nga whakaritenga o te rongoa rongoa i raro i te tuhinga o te hua
Te tere hurihuri.
3.2 Whakaritea te pāmahana wai mahana tonu kia rite ki te whakatau i raro i ia taonga tarukino.
3.3 I tukuna te hua whakamatautau ki roto i te ipu kua tohua e te taputapu, ka inehia te Koki paopao (a) i runga i te ture i muri i te 30 meneti o te mahana tonu. Whakawetohia te motuka ka whakaara ano mo te whakatau
Ko te rereketanga i waenga i nga uara toharite kaua e neke ake i te 3%, ki te kore me mahi inenga tuatoru.
3.4 Tātaihia te wāriu toharite o ngā whakamātautau e rua i runga i te tātai kia whiwhi i te pokey hihiko o te hua i whakamatauria.
4. Tuhia me te tatau
4.1 Tuhia te tauira viscometer hurihuri, te tau rotor me te tere i whakamahia, te inenga tonu (k 'uara), te pāmahana ine, me ia inenga. Uara.
Te tātai tātai o 4.2
Pokey hihiko (MPa”s)=Ka ko te K ko te inenga inenga ki te wai paerewa o te pokey e mohiotia ana ko A ko te koki paopao.
Wā tuku: Apr-25-2024