Sodium carboxymethyl cellulose (CMC) waa anionic, silsilad toosan, ether cellulose biyo-milmi kara, derivative of cellulose dabiiciga ah iyo chloroacetic acid by hagaajinta kiimikada.Its xal aqueous waxa uu leeyahay hawlaha dhumuc, samaynta filimada, bonding, haynta biyaha, ilaalinta kolloidal, emulsification iyo hakinta, iyo waxa loo isticmaali karaa sida flocculant, wakiilka chelating, emulsifier, dhumuc weyn, wakiilka ilaalinta biyaha, wakiilka cabbirka, wax samaynta filim, iwm ., kaas oo si weyn loogu isticmaalo cuntada, dawooyinka, elektiroonigga, sunta cayayaanka, hargaha, bacaha, daabacaadda, ceramics, warshadaha maalinlaha ah ee kiimikada iyo qaybaha kale.
Sodium carboxymethyl cellulose guud ahaan waa adag budo ah, mararka qaarkood granular ama fibrous, caddaan ama huruud khafiif ah midabka, ma ur gaar ah, waa walax kiimikaad macromolecular, waxa uu leeyahay qoyan xoog leh, milmi karaa biyaha, biyaha si ay u sameeyaan xal viscous leh sare. hufnaan.Aan milmi karin guud ahaan xalalka organic, sida ethanol, ether, chloroform iyo benzene, laakiin waa lagu milmi karaa biyaha, si toos ah u milmay biyaha waa mid gaabis ah, laakiin milanka weli waa mid aad u weyn, iyo xalka aqueous wuxuu leeyahay viscosity gaar ah.Adag ee deegaanka guud waa mid aad u xasilloon, sababtoo ah waxay leedahay nuugista biyaha iyo qoyaanka qaarkood, jawiga qalalan, waa la ilaalin karaa waqti dheer.
① Habka wax soo saarka
1. Habka dhexdhexaadka ah ee biyaha
Geedi socodka biyaha-dhagaxda waa hab-soo-saarka wax-soo-saarka hore ee diyaarinta warshadaha ee sodium carboxymethyl cellulose.Geedi socodka this, cellulose alkali iyo wakiilka etherifying ka falcelin in xal aqueous ka kooban ion oksaydh oxygen lacag la'aan ah, iyo biyaha waxaa loo isticmaalaa sida dhexdhexaad ah falcelinta ee habka falcelinta, iyada oo aan dareere organic.
2. Habka xalinta
Habka xalinta waa habka wax-soo-saarka organic, kaas oo ah habka wax soo saarka ee lagu sameeyay habka dhexdhexaadka ah ee biyaha si loogu beddelo biyaha dareeraha organic sida dhexdhexaad ah falcelinta.Habka alkalization iyo etherification ee cellulose alkali iyo monochloroacetic acid ee dareere organic.Marka loo eego qiyaasta dhexdhexaadinta falcelinta, waxa loo qaybin karaa habka cajiinka iyo habka dabaasha dabaasha.Qadarka dareeraha dabiiciga ah ee loo isticmaalo habka garaacista ayaa aad uga weyn midka habka wax lagu cajiiyo, iyo qadarka dareeraha organic ee loo isticmaalo habka cajiinka waa saamiga miisaanka mugga ee qadarka cellulose, halka qadarka dareeraha organic la isticmaalo. habka pulping waa saamiga miisaanka mugga ee qadarka cellulose.Marka sodium carboxymethyl cellulose lagu diyaariyo habka dabaasha dabaasha, falcelinta adag waxay ku jirtaa xaalad slurry ama hakinta nidaamka, markaa habka dabaasha dabaasha waxaa sidoo kale loo yaqaan habka joojinta.
3. Habka slurry
Habka slurry waa tignoolajiyada ugu dambeeyay ee soo saarta sodium carboxymethyl cellulose.Habka slurry kaliya ma soo saari karaa daahirnimo sare sodium carboxymethyl cellulose, laakiin sidoo kale soo saaro sodium carboxymethyl cellulose leh shahaado beddelka sare iyo beddelka labiska.Habka wax soo saarka ee habka slurry waa qiyaas ahaan sida soo socota: saxarka suufka ah ee lagu shubay budada waxaa loo diraa mashiinka alkalizing toos ah ee ku qalabaysan khamriga isopropyl, iyo xalalka sodium hydroxide ee lagu daray marka la isku daro waa alkalized, iyo heerkulka alkalizing waa qiyaastii 20. ℃Alkalization ka dib, walxaha waxaa lagu shubaa mashiinka toosan ee etherifying, iyo xalalka khamriga isopropyl ee chloroacetic acid ayaa lagu daray, iyo heerkulka etherifying waa qiyaastii 65 ℃.Marka loo eego isticmaalka badeecada gaarka ah iyo shuruudaha tayada, feejignaanta alkalization, wakhtiga alkalization, qadarka wakiilka etherifying iyo wakhtiga etherification iyo xuduudaha kale ee habka waa la hagaajin karaa.
② Baaxadda codsiga
1. CMC ma aha oo kaliya komiye wanaagsan oo dejiye iyo dhumuc leh ee codsiyada cuntada, laakiin sidoo kale waxay leedahay qaboojin aad u fiican iyo xasillooni dhalaalaysa, waxayna wanaajin kartaa dhadhanka alaabta waxayna kordhin kartaa wakhtiga kaydinta.
2. Saabuunta, CMC waxaa loo isticmaali karaa sidii wakiilka dib-u-soo-celinta ee ka-hortagga wasakhda, gaar ahaan fayraska hidrophobic synthetic fiber-ka-soo-kabashada saamaynta dib-u-soo-celinta, si aad ah uga wanaagsan fiber-karboxymethyl.
3. Qoditaanka saliidda waxaa loo isticmaali karaa si loo ilaaliyo saliidda Ceelasha sida dhoobada, wakiilka biyaha, qadarka ceel kasta oo saliid ah waa 2 ~ 3t Ceelasha gacmeed, Ceelasha qoto dheer 5 ~ 6t.
4. Loo isticmaalo warshadaha dharka sida wakiilka cabbirka, daabacaadda iyo rinjiyeynta dhumucyada slurry, daabacaadda dharka iyo dhamaystirka adkaynta.
5. Loo isticmaalo sida daahan wakiilka anti-dejinta, emulsifier, kala firdhiyey, wakiilka siman, xabagta, ka dhigi kartaa qaybta adag ee rinjiga si siman loo qaybiyey ee dareeraha, si rinjiga aan la stratified muddo dheer, laakiin sidoo kale loo isticmaalo in putty. .
6. Sida flocculant ee ka saarida ions calcium ka badan sodium gluconate waxtar badan, sida cation beddelka, awoodda sarrifka ee ilaa 1.6ml/g.
7. Warshadaha waraaqaha loo isticmaalo sida wakiilka cabbirka waraaqaha, waxay si weyn u wanaajin kartaa xoogga qallalan iyo xoogga qoyan ee caabbinta waraaqaha iyo saliidda, nuugista khad iyo caabbinta biyaha.
8. Sida hydrosol ee alaabta la isku qurxiyo, loo isticmaalo sida wakiilka dhumuc ee daawada cadayga, qiyaasteedu waa qiyaastii 5%.
Jumlo Carboxymethyl Cellulose (CMC) Soo saaraha iyo Alaabta |EVERBRIGHT (cnchemist.com)
Waqtiga boostada: Juun-27-2024