Jilaa:Hydroxyethyl Cellulose (HEC CAS: 9004-62-0) waa caddaan ama huruud aan ur lahayn, ur lahayn, oo si fudud u qulqulaya.Ku milma biyaha qabow iyo biyaha kulul labadaba, laakiin guud ahaan aan lagu milmi karin inta badan dareerayaasha dabiiciga ah.Qiimaha pH wax yar ayaa isbeddela inta u dhaxaysa 2-12, laakiin mawjadaha ayaa hoos u dhacaya wixii ka baxsan xadkan.
Qiimaha：Hydroxyethyl Cellulose (HEC CAS: 9004-62-0) waa dhumuc si caadi ah loo isticmaalo khad biyo-ku-salaysan oo ku salaysan cellulose eter.Waa xarun nonionic biyo-milmi leh oo leh awood dhumuc wanaagsan oo biyaha ah, waxaa hoos u dhigi kara ogsijiinta, acids, iyo enzymes, waxaana isku xiri kara Cu2+ xaaladaha alkaline hoostooda.Heerkul ahaan waa xasilloon, uma muuqato jel inta lagu jiro kuleylka, kuma soo degto xaaladaha acidic, waxayna leedahay hanti-sameynta filim wanaagsan.Xalka aqueous waxaa laga dhigi karaa filimo hufan, kaas oo la samayn karo by falgalka cellulose alkaline iyo Chemicalbook ethylene oxide, oo uu leeyahay sifooyinka dhumuc, emulsification, adhesion, ganaax, film-samaynta, haynta qoyaan, iyo ilaalinta kolloid.Doorka dhumucyada khadadka biyaha ku salaysan waa in la dhumuyo.Ku darida dhumucda khadku waxay kordhisaa viscosity-keeda, taas oo hagaajin karta xasiloonida jireed iyo kiimikaad ee khad;Sababtoo ah kororka viscosity, rheology ee khadku waa la xakameyn karaa inta lagu jiro daabacaadda;Midabka iyo buuxinta khadku ma fududa in la soo dajiyo, taasoo kordhinaysa xasiloonida kaydinta khad biyaha ku salaysan.
Habka wax-soo-saarka: Alkali cellulose waa polymer dabiici ah oo ka kooban saddex kooxood oo hydroxyl giraan kasta oo salka fiber.Kooxda ugu firfircoon ee hydroxyl ayaa ka falcelisa si ay u soo saarto hydroxyethyl cellulose.Ku qooji suufka ceeriin ama saxarka la safeeyey 30% alkali dareere ah, oo soo saar si aad u cadaadiso nus saac ka dib.Riix ilaa inta ka kooban biyaha alkaline ay gaaraan 1:2.8, ka dibna burburi.cellulose-ka alkali-ka ah ee la jajabiyey waxaa la geliyaa reactor-ka, la shaabadeeyey, la faaruqiyey, oo laga buuxiyey nitrogen.Kiimikada buuggu si isdaba joog ah ayaa loo faaruqiyay oo looga buuxiyey nitrogen si loo beddelo dhammaan hawada ku jirta reactor.Riix dareeraha ethylene oxide ee la qaboojiyey, u gudbi biyaha qaboojinta jaakada reactor, oo xakamee heerkulka falcelinta ilaa 25 ℃ 2 saac si aad u hesho badeecada hydroxyethyl cellulose cayriin.Alaabada cayriin waxaa lagu dhaqaa aalkolo, lagu dhex milmay acetic acid ilaa pH 4-6, waxaana lala xiriiriyaa glioxal gabow.Dabadeed ku maydh biyo, sentrifuge, fuuqbax, engeji, oo shiid si aad u hesho hydroxyethyl cellulose.
Waqtiga boostada: Mar-28-2023
