Saamaynta dhumucda ee ether cellulose

Eter cellulosewaxay siisaa hoobiye qoyan oo leh viscosity aad u fiican, waxay si weyn u kordhin kartaa awoodda isku-xidhka ee hoobiye qoyan iyo cawska, hagaajinta waxqabadka anti-sag ee hoobiye, oo si ballaaran loo isticmaalo hoobiye malaastaan, nidaamka dahaarka dibadda iyo hoobiye xidhida leben.Saamaynta dhumucdiisuna ee ether cellulose sidoo kale kordhin kartaa lebiska iyo awoodda anti-firdhinta ah ee alaabta cement cusub ku salaysan, si looga hortago stratification, kala soocidda iyo dhiigbaxa hoobiye iyo shubka, waxaa loo isticmaali karaa in la taaban karo fiber, shubka biyaha hoostooda iyo shubka is-compact.

Eter cellulosewaxay kordhisaa viscosity ee walxaha sibidhka ku salaysan ee ka soo baxa xuubka etherka cellulose.Caadi ahaan isticmaal “viscosity” mitirkan si aad u qiimeyso viscosity xal ether cellulose, viscosity ee ether cellulose guud ahaan waxa loola jeedaa fiirsashada gaar ah (2%) ee cellulose ether xal, heerkulka (20 ℃) ​​iyo heerka xiirid (ama wareegga xawaaraha, sida 20 RPM) shuruudaha, oo wata agabka aaladda cabbiraadda, sida qiyamka viscosity-ka la qiyaasay ee wareega.Viscosity waa halbeeg muhiim ah oo lagu qiimeeyo waxqabadka ether cellulose iyo ether cellulose, heerka sare ee viscosity ee xalka, ka sii wanaagsan viscosity ee alaabta saldhigga sibidhka, viscosity ee alaabta salka awood, caabbinta sag iyo caabbinta si ay u xoog badan awoodda kala firdhiso. Laakin haddii viscosity-ku aad u weyn yahay, waxay saameyn kartaa dhaqdhaqaaqa shayga saldhigga ah iyo maneuverability (sida dhismaha malaasta xabagta hoobiyeyaasha).Sidaa darteed, viscosity ether-ka cellulose ee loo isticmaalo hoobiyeyaasha qallalan ee qallalan ayaa badanaa ah 15,000 ~ 60,000 Mpa.s-1, iyo viscosity of cellulose ether ayaa looga baahan yahay inay hoos u dhigto hoobiyeyaasha is-heereeya iyo is-compactconcrete oo leh shuruudo dheecaan sare leh.Intaa waxaa dheer, saameynta dhumucda ee ether cellulose waxay kordhin doontaa baahida biyaha ee alaabta cement-ku salaysan, sidaas darteed kordhinta wax soo saarka hoobiye.Viscosity ee xal ether cellulose waxay ku xiran tahay miisaanka kelli (ama heerka polymerization) iyo diiradda eter cellulose, heerkulka xalka, heerka xiirid, iyo habka imtixaanka.Heerka sare ee polymerization ee ether cellulose, ayaa ka weyn miisaanka kelli, sare u kaca ee xal aqueous;Qiyaasta sare ee qiyaasta (ama xoojinta) ether cellulose, ayaa ka sarreeya viscosity ee xalkeeda aqueous, laakiin isticmaalka waa in fiiro gaar ah u leh xulashada qiyaasta ku habboon, si aan loo isku darin mid aad u sarreeya, waxay saameyneysaa waxqabadka hoobiye iyo la taaban karo;Sida dareerayaasha intooda badan, viscosity of cellulose ether xal ayaa hoos u dhigi doona korodhka heerkulka, iyo xoojinta sare ee etherka cellulose, saamaynta heerkulka;Xalka cellulose ether caadi ahaan waa jir pseudoplastic ah oo leh hantida khafiifinta xiirta.Markasta oo uu sareeyo heerka xiirta, ayaa hoos u dhigaya viscosity-ga.

Sidaa darteed, isku-xidhka hoobiyeyaasha ayaa hoos u dhigi doona xoog dibadeed, taas oo u sahlaysa in la xoqo dhismaha hoobiye, samaynta hoobiye waxay yeelan kartaa karti-shaqsiyeed wanaagsan iyo isku-duubni.Si kastaba ha ahaatee, xalinta ether cellulose waxay tusi doontaa sifooyinka dheecaanka Newtonian marka xoogasaarku aad u yar yahay iyo mawqifku aad u yar yahay.Marka fiirsigu kordho, xalku si tartiib tartiib ah ayuu u soo bandhigayaa sifooyinka dareeraha pseudoplastic, iyo inta badan feejignaanta, waxay sii caddahay pseudoplastic.