Hydroxypropylmethylrubicin (HPMC) waa walxo cellulosic ah, saxarka ama suufka oo loo isticmaali karo sifaynta saxarka alwaax. Ka hor inta aan la burburin nidaamka alkalization ama alkalization. Dhaawaca makaanikada ayaa laga yaabaa inuu burburiyo qaab dhismeedka isku-darka ah ee walxaha cellulose-ka, taas oo yareyneysa polymerization iyo crystallinity, kordhinta aagga dusha gaarka ah, sidaas awgeed kordhinta matrixku waxay noqon kartaa macromolecular ternary iyo cellulose.
Hydroxymethylcellulose waxaa loo isticmaalaa sidii substrate wax soo saarka saliidda. Qaabka utility wuxuu dhamaystiri karaa ka faa'iidaysiga sonkorta, wanaajin kara heerka isticmaalka alaabta, yaraynta hadhaaga substrate ee dareeraha halsano, iyo dhimista kharashka daaweynta biyaha wasakhda ah. Astaamaha isku dhafka ah waxay ku habboon yihiin hagaajinta dufcadda, quudinta iyo hababka halsano ee joogtada ah, ka fogaanshaha khalkhalgelinta qaybaha dhexdhexaadka ah iyo heerka qashin-qubka, iyo sidoo kale fududeynta hagaajinta hababka halsano. Maadaama HPMC uu leeyahay shaqo la mid ah ether-yada kale ee biyaha ku milma, waxaa loo isticmaali karaa sidii wakiilka filim samaynta, dhumuclaha, emulsifier iyo xasiliye loogu talagalay rinjiga cinjirka ah iyo rinjiga biyaha milmaya, oo leh iska caabin aad u fiican, dahaarka lebbiska iyo dhejinta Diirada saar hagaajinta xiisadda dusha sare, xasilloonida aashitada-saldhigga iyo la jaanqaadka midabada macdan.
Halabuurka hydroxypropylmethylcellulose (HPMC) waa khalkhal, laakiin mabda'a, laakiin luminta substrate, salka..etherification, kala diri
Soo kabashada wakiilka iyada oo loo marayo centrifugation, dhaqid, qalajin iyo taabashada deegaan kasta ayaa si dabiici ah hodan ugu ah xirfadaha iyo aqoonta aasaasiga ah.
Qalabka caawinta iyo kontaroolada saacadaha ayaa kaa caawin doona hubinta tayada alaabta iyo nidaamka wax soo saarka ee la isku halayn karo. Waxay saamaysaa cadadka biyaha ee hypromellose-isku-darka hoobiyeyaasha biyaha haynta ee hydroxypropyl methylcellulose ether si kor loogu qaado fuuq-celinta joogtada ah ee sibidhka, hoobiye iyo substrate si loo kordhiyo wakhtiga dhejinta.
Waxaa jira saamaynta ugu weyn ee haynta biyaha, haynta biyaha, haynta qoyaanku waa budada suufka ah, adhesion iyo hawlaha sifaynta. Si weyn loogu isticmaalo warshadaha dhismaha, warshadaha rinjiga iyo warshado kale oo badan, hydroxypropyl methylcellulose ayaa muhiim u ahsoo saarida hydroxypropyl methylcellulose. Heerkulka gelation kulaylku aad ayuu uga sarreeyaa kan methylcellulose. Lime iyo soodhaha ayaa saameyn yar ku leh waxqabadka, laakiin waxay dedejin karaan kala dirida matrixka waxayna kordhin karaan viscosity. Marka alkolada polyvinyl, istaarijka ether, xanjo khudradda iyo rinjiga hydroxypropyl methylcellulose, iwm., xalka kaydka ee qaabka kor ku xusan. Markaad isticmaalayso hoobiye, gypsum, budada dhejiska ah ama alaabta kale sida koollada, waxay hagaajin kartaa karti-shaqsiyeedka waxayna dheereyn kartaa wakhtiga shaqada. Waxaa loo isticmaali karaa qurxinta, dhejiska dhejiska, marmar, balaastiig iyo in la yareeyo isticmaalka sibidhka jirida beenta ah. Biyo-haysashada biyaha marka la qalajiyo ka dib si dhakhso ah uma dillaaci doonto, iyo xoogga daaweynta ka dib waa la hagaajiyaa.
Waqtiga boostada: Dec-20-2022