Ko te pokey ahua he tohu nui o te hydroxypropyl methylcellulose, ko nga tikanga ine e whakamahia nuitia ana ko te viscometry hurihanga, viscometry capillary me te viscometry taka.
I inehia te Hydroxypropyl methylcellulose i mua ma te whakamahi i te viscometry capillary ma te whakamahi i te Ubbelohde viscometer. Ko te tikanga ko te otinga ine he wairewa wai o te 2, ko te tauira: V = Kdt. Ko te V hei tohu mo te pokey, K ko te taumau o te viscometer, d e tohu ana i te kiato i te pāmahana taimau, t e tohu ana ki te wa mai i runga ki raro o te viscometer, he tuarua te waeine, he uaua tenei tikanga ki te whakahaere me te mahi. he ngawari ki te he, he uaua ki te wehewehe i te kounga o te hydroxypropyl methylcellulose.
Ko te raruraru o te whakakore i te kopa hanga he raruraru nui e pa ana ki nga kaihoko. Tuatahi, me whakaaro te raruraru o nga rauemi mata mo te paparanga kapia hanga. Ko te take nui mo te paparanga kapia hanga ko te waipiro polyvinyl (PVA) me te hydroxypropyl methylcellulose (HPMC) kaore i te hototahi. Ko te take tuarua ko te wa whakakorikori kaore i te nui, a, kaore i te pai te mahi matotoru o te kapia hanga.
Ko te hydroxypropyl methylcellulose (HPMC) o te mea hanga o naianei me whakamahi ki te kapia hanga, no te mea ka marara te hydroxypropyl methylcellulose (HPMC) ki te wai, kaore e taea te tino memeha, a ka piki haere te pokey o te wai i roto i te 2 meneti, ka hanga i te Transparent viscous colloid. .
Ina ranu nga hua rewa wera ki te wai matao, ka tere marara ki te wai wera, ka ngaro ki te wai wera. Ka heke te pāmahana ki tetahi pāmahana, ka puhoi te ahua o te pokey tae noa ki te hanga i tetahi colloid puataata. Hydroxypropyl i roto i te whakapiri hangahanga Ko te inenga e taunakitia ana o HPMC he 2-4kg.
Ko te Hydroxypropyl methylcellulose (HPMC) he matū pūmau, he ātete ki te koriri, he pai te pupuri i te wai i roto i nga whakapiringa hangahanga, kaore e pa ki nga huringa pH. Ka taea te whakamahi mai i te 100,000 S ki te 200,000 S, engari ko te teitei ake o te viscosity i roto i te hanga, te pai ake, me te viscosity he inversely proportional to the bonding strength. Ko te teitei ake o te pokey, ko te iti ake o te kaha, ko te tikanga ko te pokey o te 100,000 S e tika ana.
Wā tuku: Apr-20-2023