Maxay yihiin arrimo saameyn doona viscosity hydroxypropyl methylcellulose?

Codsiga hoobiye qoyan,hydroxypropyl methylcellulosewuxuu leeyahay sifooyin dhumuc wanaagsan, si weyn u kordhin kartaa awoodda isku xidhka u dhexeeya hoobiye qoyan iyo lakabka salka, iyo sidoo kale hagaajin karaa waxqabadka anti-sag ee hoobiye, sidaas darteed waxaa si ballaaran loo isticmaalaa in malaasta Hoobiye, nidaamka daminta derbiga dibadda iyo hoobiye bond bond leben.

Saamaynta dhumucdeeda ee ether cellulose, waxay sidoo kale kordhin kartaa isku-dhafka iyo awoodda ka-hortagga kala-firdhinta walxaha cusub ee sibidhka ku salaysan, waxayna sidoo kale ka hortagi kartaa dhibaatooyinka delamination, kala-soocidda iyo dhiig-baxa hoobiye iyo shubka. Waxa lagu dabaqi karaa shubka la xoojiyay ee Fiber-ka, shubka biyaha hoostooda iyo shamiitada is-xakamaysa.

Hydroxypropyl methylcellulose waxay kordhin kartaa waxqabadka viscous ee walxaha sibidhka ku salaysan. Waxqabadkani wuxuu inta badan ka yimaadaa viscosity of cellulose ether solution. Guud ahaan, tusaha nambarada ee viscosity waxaa loo isticmaalaa in lagu xukumo viscosity of cellulose ether xal, halka cellulose The viscosity ee ether inta badan inta badan waxaa loola jeedaa diiradda gaar ah ee xal ether cellulose, sida caadiga ah 2%, heerkulka la cayimay, sida 20 digrii iyo qiyaas wareeg ah, iyadoo la isticmaalayo qalab cabbireed cayiman, sida viscometer wareeg ah. Qiimaha viscosity.

Viscosity waa mid ka mid ah halbeegyada muhiimka ah ee lagu qiimeeyo waxqabadka ether cellulose. Marka uu sareeyo viscosity ee xalka hydroxypropyl methylcellulose, ayaa ka sii wanagsan hufnaanta walxaha sibidhka ku salaysan, iyo sida ay u wanagsan tahay waxqabadka adhesion ee substrate-ka. Isla mar ahaantaana, waxa ay leedahay Awoodda ka-hortagga-soo-saarka iyo awoodda ka-hortagga kala-firdhinta ayaa ka xoog badan, laakiin haddii uu viscosity-kiisu aad u sarreeyo, waxay saameyn doontaa waxqabadka socodka iyo shaqeynta alaabta sibidhka ku salaysan.

Maxay yihiin arrimo saameyn doona viscosity hydroxypropyl methylcellulose? Inta badan waxay ku xiran tahay sababaha soo socda.

1. Heerka sare ee polymerization of cellulose ether of hydroxypropyl methylcellulose, weynaan miisaankeeda kelli, taasoo keentay in viscosity sare ee ay xal aqueous.

2. Haddii qadarka ama xoojinta etherka cellulose uu sarreeyo, viscosity ee xalkeeda aqueous ayaa noqon doona mid sarreeya. Si kastaba ha noqotee, waa in taxaddar la sameeyaa si loo doorto qaddar ku habboon ether-ka cellulose marka la isticmaalayo, inta badan si looga fogaado xad-dhaafka xad-dhaafka ah ee ether-ka cellulose. Waxay saameyn doontaa waxqabadka hoobiye iyo shubka.

3. Sida dareerayaasha intooda badan, viscosity of cellulose ether xal waxay hoos u dhigi doontaa korodhka heerkulka, iyo xoojinta sare ee etherka cellulose, hoos u dhigista heerkulka. Saamaynta wayn.

4. Xalka ether cellulose sida caadiga ah waa pseudoplastic, kaas oo leh sifooyinka khafiifinta xiirta. Markasta oo uu bato heerka xiirid inta lagu jiro baaritaanka, waa yaraanta viscosity.

Isku-xidhka hoobiyeyaasha ayaa la dhimi doonaa sababtoo ah ficilka xoogga dibadda, kaas oo sidoo kale faa'iido u leh dhismaha xajinta ee hoobiye, taas oo keenta isku-duubni wanaagsan iyo karti-shaqsiyeedka hoobiye isku mar. Si kastaba ha ahaatee, haddii ayether celluloseXalku waxa uu leeyahay xoog-saar sare Marka maw-jiifku hooseeyo oo uu yaraado, waxay muujin doontaa sifooyinka dheecaanka Newtonian. Marka fiirsigu kordho, xalku si tartiib tartiib ah ayuu u muujin doonaa sifooyinka dareeraha pseudoplastic, iyo haddii feejignaantu ka sarreyso, pseudoplasticity waxay noqon doontaa mid cad.