Viscosity-ka muuqda waa tilmaame muhiim ah oo ah hydroxypropyl methylcellulose, hababka cabbiraadda ee inta badan la isticmaalo waxaa ka mid ah viscometry rotational, viscometry capillary iyo drop viscometry.
Hydroxypropyl methylcellulose ayaa hore loo cabbiray iyadoo la isticmaalayo viskometry capillary iyadoo la isticmaalayo viskometer Ubbelohde.Caadiyan xalalka cabbirku waa xal aqueous ah oo ah 2, qaacidadu waa: V = Kdt.V waxay u taagan tahay viscosity, K waa joogteynta viscometer-ka, d waxay u taagan tahay cufnaanta heerkul joogto ah, t waxaa loola jeedaa wakhtiga sare ilaa hoose ee viscometer, unuggu waa labaad, habkani waa adag tahay in la shaqeeyo Way fududahay in la keeno Khalad, wayna adagtahay in la kala saaro tayada hydroxypropyl methylcellulose.
Dhibaatada delamination ee xabagta dhismaha waa dhibaato weyn oo ay la kulmaan macaamiisha.Ugu horreyntii, dhibaatada alaabta ceeriin waa in loo tixgeliyaa lakabka koollada dhismaha.Sababta ugu weyn ee lakabka xabagta dhismaha ayaa ah in alkolada polyvinyl (PVA) iyo hydroxypropyl methylcellulose (HPMC) aysan ku habboonayn.Sababta labaad ayaa ah in wakhtiga kicinta aanu ku filnayn, iyo waxqabadka dhumuc ee xabagta dhismuhu ma fiicna.
Hydroxypropyl methylcellulose (HPMC) ee ikhtiraacida hadda waxay u baahan tahay in loo isticmaalo xabagta dhismaha, sababtoo ah hydroxypropyl methylcellulose (HPMC) waxay ku kala firirsan tahay biyaha oo runtii ma milmi karto, iyo viscosity ee dareeraha ayaa si tartiib tartiib ah u kordheysa ilaa 2 daqiiqo, sameynta kolloid viscous ah. .
Marka alaabta dhalaalaysa lagu daro biyo qabow, waxay si dhakhso ah ugu firdhi doonaan biyo kulul oo ku baaba'aan biyo kulul.Marka heerkulku hoos ugu dhaco heerkul gaar ah, mawgu si tartiib ah ayuu u soo muuqan doonaa ilaa kolloid viscous ah oo hufan laga sameeyo.Hydroxypropyl ee xabagta dhismaha Qiyaasta lagu taliyey ee HPMC waa 2-4kg.
Hydroxypropyl methylcellulose (HPMC) waxay leedahay sifooyin kiimikaad oo deggan, caariyaysi caariyaysi iyo biyo-hayn wanaagsan ku leh xabagta dhismaha, mana saameeyaan isbeddellada pH.Waxaa loo isticmaali karaa laga bilaabo 100,000 S ilaa 200,000 S, laakiin heerka sare ee viscosity ee wax soo saarka, ka sii fiican, iyo viscosity waa ka soo horjeeda u dhiganta xoogga isku xidhka.Maqnaanshaha sare, xoogga hoose, guud ahaan mawqifka 100,000 S ayaa ku habboon.
Waqtiga boostada: Abriil-20-2023