1. HPMC waxay u qaybsantaa nooca degdega ah iyo nooca fidinta degdega ah
Nooca fidinta degdega ah ee HPMC waxaa lagu dhejiyay xarafka S, glioxalna waa in lagu daraa inta lagu jiro habka wax soo saarka.
Nooca degdega ah ee HPMC kuma darto wax xarfo ah, sida "100000" macnaheedu waa "100000 viscosity fast dispersion type HPMC".
2. Iyadoo S ama la'aanteed, sifooyinku way kala duwan yihiin
HPMC oo si degdeg ah u kala firdhisay si dhakhso ah ayay u firdhisaa markay la kulmaan biyo qabow oo ku baaba'aan biyaha.Waqtigaan, dareeruhu ma laha viscosity, sababtoo ah HPMC waxa kaliya oo lagu kala firdhiyaa biyaha iyada oo aan lahayn milmo dhab ah.Qiyaastii laba daqiiqo ka dib, viscosity ee dareeraha ayaa si tartiib tartiib ah u kordhaya, samaynta kolloid qaro leh oo muuqda.
HPMC degdega ah ayaa loogu kala firdhi karaa biyo kulul qiyaastii 70°C.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.
3. S ama la'aanteed, ujeedadu way ka duwan tahay
HPMC degdega ah waxa loo isticmaali karaa oo kaliya budada shubka ah iyo hoobiye.Xabagta dareeraha ah, rinjiga iyo alaabta dhaqida, waxaa jiri doona ifafaale kooxeysi oo lama isticmaali karo.
HPMC ee degdega ah ee loo kala firdhiyey waxa ay leedahay codsiyo kala duwan waxaana loo isticmaali karaa budada shubka ah, hoobiye, xabagta dareeraha ah, rinjiga, iyo alaabta lagu dhaqo iyada oo aan wax khilaaf ahi jirin.
Habka kala dirida
1. Qaado cadadka biyaha kulul ee loo baahan yahay, ku rid weel oo kuleyl ka sarreeya 80 ° C, oo si tartiib ah ugu dar alaabtan si tartiib ah u walaaq.Cellulose-ku waxa uu sabbeeyaa biyaha oogada sare marka hore, laakiin si tartiib tartiib ah ayaa loo kala firdhiyaa si ay u sameeyaan slurry labis ah.Xalka ayaa la qaboojiyey marka la walaaqayo.
2. Haddii kale, kuleyli 1/3 ama 2/3 ee biyaha kulul ilaa 85 ° C, ku dar cellulose si aad u hesho slurry biyo kulul, ka dibna ku dar inta hartay ee biyaha qabow, sii walaaq, oo qabooji isku dhafka ka dhashay.
3. Mesh cellulose waa mid aad u fiican, waxayna u jirtaa sida qaybo yaryar oo gaar ah oo ku jira budada siman ee la walaaqay, waxayna si dhakhso ah u milaan marka ay la kulmaan biyaha si ay u sameeyaan viscosity loo baahan yahay.
4. Si tartiib ah oo siman ku dar cellulose heerkulka qolka, walaaqaya si joogto ah ilaa xal hufan la sameeyo.
Waa maxay arrimaha saameeya haynta biyaha ee hydroxypropyl methylcellulose?
Haysashada biyaha ee hydroxypropyl methylcellulose alaabta HPMC lafteeda waxaa badanaa saameeya arrimaha soo socda:
1. Midnimada cellulose ether HPMC
HPMC, metoxyl iyo hydroxypropoxyl oo si siman looga falceliyay ayaa si siman loo qaybiyay, heerka haynta biyuhuna waa sarreeyaa.
2. Heerkulka gelation thermal ee cellulose ether HPMC
Heerkulka jel-kulka ee sarreeya, ayaa sarreeya heerka haynta biyaha;haddii kale, waa yaraanta heerka haynta biyaha.
3. Cellulose ether HPMC viscosity
Marka viscosity ee HPMC uu kordho, heerka haynta biyaha sidoo kale wuu kordhiyaa;marka viscosity-gu gaaro heer go'an, kororka heerka haynta biyuhu waxay u egtahay inay fidsan yihiin.
Qadarka lagu daro cellulose ether HPMC
Inta badan xaddiga cellulose ether HPMC ee lagu daray, sare u kaca heerka haynta biyaha iyo si fiican u saamayn haysashada biyaha.
Inta u dhaxaysa 0.25-0.6% ee dheeraadka ah, xajinta biyaha ayaa si degdeg ah u kordheysa iyadoo la kordhinayo qadarka dheeraadka ah;marka lacagta dheeriga ah ay sii korodho, korodhka korodhka xadiga biyaha ayaa hoos u dhacaya.
Waqtiga boostada: Nov-17-2022