1. Kev Taw Qhia Luv Luv ntawm Carboxymethyl Cellulose
Lub npe lus Askiv: Carboxyl methyl Cellulose
Lub Npe Luv: CMC
Cov mis molecular yog hloov pauv: [C6H7O2(OH)2CH2COONa]n
Tsos: dawb los yog daj daj fibrous granular hmoov.
Kev yaj dej: yooj yim yaj hauv dej, tsim cov colloid viscous pob tshab, thiab cov tshuaj yog nruab nrab lossis me ntsis alkaline.
Nta: Cov tshuaj lom neeg molecular siab ntawm cov colloid nto, tsis muaj ntxhiab, tsis muaj saj thiab tsis muaj tshuaj lom.
Cov cellulose ntuj muaj ntau nyob rau hauv xwm thiab yog cov polysaccharide ntau tshaj plaws. Tab sis hauv kev tsim khoom, cellulose feem ntau muaj nyob rau hauv daim ntawv ntawm sodium carboxymethyl cellulose, yog li lub npe tag nrho yuav tsum yog sodium carboxymethyl cellulose, lossis CMC-Na. Siv dav hauv kev lag luam, kev tsim kho, tshuaj, khoom noj, textile, ceramics thiab lwm yam teb.
2. Carboxymethyl cellulose thev naus laus zis
Cov txheej txheem hloov kho ntawm cellulose suav nrog: etherification thiab esterification.
Kev hloov pauv ntawm carboxymethyl cellulose: carboxymethylation reaction hauv etherification technology, cellulose yog carboxymethylated kom tau txais carboxymethyl cellulose, xa mus rau CMC.
Cov haujlwm ntawm carboxymethyl cellulose aqueous solution: thickening, film forming, bonding, water retention, colloid protection, emulsification thiab suspension.
3. Kev tshuaj lom neeg ntawm carboxymethyl cellulose
Kev ua haujlwm ntawm cellulose alkalization:
[C6H7O2(OH)3]n + nNaOH→[C6H7O2(OH)2ONa]n + nH2O
Cov tshuaj tiv thaiv etherification ntawm monochloroacetic acid tom qab alkali cellulose:
[C6H7O2(OH)2ONa]n + nClCH2COONa →[C6H7O2(OH)2OCH2COONa]n + nNaC
Yog li ntawd: cov mis tshuaj rau kev tsim cov carboxymethyl cellulose yog: Cell-O-CH2-COONa NaCMC
Sodium carboxymethyl cellulose(NaCMC lossis CMC luv luv) yog cov cellulose ether uas yaj tau hauv dej uas ua rau qhov viscosity ntawm cov tshuaj aqueous feem ntau siv sib txawv ntawm ob peb cP mus rau ntau txhiab cP.
4. Cov yam ntxwv ntawm cov khoom carboxymethyl cellulose
1. Khaws cov kua dej CMC: Nws ruaj khov nyob rau hauv qhov kub qis lossis tshav ntuj, tab sis qhov acidity thiab alkalinity ntawm cov kua yuav hloov pauv vim qhov kub hloov pauv. Nyob rau hauv kev cuam tshuam ntawm ultraviolet rays lossis microorganisms, qhov viscosity ntawm cov kua yuav txo qis lossis txawm tias ua puas tsuaj. Yog tias xav tau khaws cia ntev, yuav tsum ntxiv cov tshuaj preservative tsim nyog.
2. Txoj kev npaj cov kua dej CMC: ua kom cov khoom me me ntub ua ntej, uas tuaj yeem ua rau kom cov nqi yaj sai dua.
3. CMC yog hygroscopic thiab yuav tsum tau tiv thaiv los ntawm cov dej noo thaum lub sij hawm cia.
4. Cov ntsev hlau hnyav xws li zinc, tooj liab, txhuas, nyiaj, hlau, tin, thiab chromium tuaj yeem ua rau CMC los nag.
5. Cov nag los tshwm sim hauv cov kua dej hauv qab PH2.5, uas tuaj yeem rov qab tau tom qab kev ua kom tsis muaj zog los ntawm kev ntxiv alkali.
6. Txawm hais tias cov ntsev xws li calcium, magnesium thiab ntsev ntawm lub rooj tsis muaj cov nyhuv nag lossis daus rau CMC, lawv yuav txo qhov viscosity ntawm cov tshuaj.
7. CMC yog sib xws nrog lwm cov kua nplaum uas yaj hauv dej, cov tshuaj ua kom mos thiab cov resins.
8. Vim yog kev ua tiav sib txawv, qhov tsos ntawm CMC tuaj yeem yog hmoov zoo, cov noob loj lossis cov fibrous, uas tsis muaj dab tsi ua rau lub cev thiab tshuaj lom neeg.
9. Txoj kev siv CMC hmoov yooj yim heev. Koj tuaj yeem ntxiv ncaj qha rau hauv dej txias lossis dej sov ntawm 40-50 ° C.
5. Qib ntawm kev hloov pauv thiab solubility ntawm carboxymethyl cellulose
Qhov degree ntawm kev hloov pauv yog hais txog tus lej nruab nrab ntawm cov sodium carboxymethyl pawg txuas rau txhua chav cellulose; tus nqi siab tshaj plaws ntawm degree ntawm kev hloov pauv yog 3, tab sis qhov muaj txiaj ntsig zoo tshaj plaws hauv kev lag luam yog NaCMC nrog degree ntawm kev hloov pauv sib txawv ntawm 0.5 txog 1.2. Cov khoom ntawm NaCMC nrog degree ntawm kev hloov pauv ntawm 0.2-0.3 yog txawv ntawm cov NaCMC nrog degree ntawm kev hloov pauv ntawm 0.7-0.8. Tus thawj zaug tsuas yog ib feem soluble hauv pH 7 dej, tab sis qhov kawg yog soluble tag nrho. Qhov sib txawv yog qhov tseeb nyob rau hauv alkaline mob.
6. Qib polymerization thiab viscosity ntawm carboxymethyl cellulose
Qib polymerization: hais txog qhov ntev ntawm cov saw cellulose, uas txiav txim siab qhov viscosity. Qhov ntev ntawm cov saw cellulose, qhov viscosity ntau dua, thiab cov kua NaCMC kuj zoo ib yam.
Viscosity: Cov kua NaCMC yog cov kua uas tsis yog Newtonian, thiab nws qhov viscosity pom tseeb txo qis thaum lub zog shear nce. Tom qab kev do tsis tau lawm, qhov viscosity nce ntxiv raws li qhov sib piv kom txog thaum nws tseem ruaj khov. Ntawd yog, cov kua yog thixotropic.
7. Daim ntawv thov ntau yam ntawm carboxymethyl cellulose
1. Kev tsim kho thiab kev lag luam ceramic
(1) Cov txheej txheem architectural: kev sib kis zoo, kev faib tawm txheej sib xws; tsis muaj txheej, ruaj khov zoo; cov nyhuv thickening zoo, viscosity txheej kho tau.
(2) Kev lag luam ceramic: siv ua cov ntawv nplaum dawb paug los txhim kho qhov plasticity ntawm cov av nplaum; glaze ruaj khov.
2. Ntxuav, tshuaj pleev ib ce, luam yeeb, luam ntawv thiab zas xim
(1) Ntxuav: CMC ntxiv rau hauv cov tshuaj ntxuav kom tiv thaiv cov av ntxuav kom tsis txhob rov qab tso rau ntawm daim ntaub.
(2) Tshuaj pleev ib ce: ua kom tuab, tawg, ncua, ruaj khov, thiab lwm yam. Nws yog qhov zoo los muab kev ua si tag nrho rau ntau yam khoom ntawm tshuaj pleev ib ce.
(3) Luam yeeb: CMC yog siv rau kev sib txuas cov ntawv luam yeeb, uas tuaj yeem siv cov chips zoo thiab txo cov nplooj luam yeeb nyoos.
(4) Textile: Ua tus neeg sawv cev tiav rau cov ntaub, CMC tuaj yeem txo qhov kev dhia xov thiab xaus kev tawg ntawm cov tshuab ua haujlwm ceev ceev.
(5) Kev luam ntawv thiab zas xim: Nws yog siv rau hauv kev luam ntawv nplaum, uas tuaj yeem txhim kho lub peev xwm hydrophilic thiab nkag mus rau hauv cov xim, ua rau cov xim sib xws thiab txo qhov sib txawv ntawm xim.
3. Kev lag luam coil thiab vuam pas nrig
(1) Cov tshuaj tua yoov tshaj cum: CMC yog siv rau hauv cov tshuaj tua yoov tshaj cum kom txhim kho qhov tawv ntawm cov tshuaj tua yoov tshaj cum thiab ua rau lawv tsis tshua tawg thiab tawg.
(2) Electrode: CMC yog siv los ua tus neeg sawv cev glaze kom ua rau cov txheej txheem ceramic zoo dua thiab tsim, nrog kev txhuam hniav zoo dua, thiab nws kuj muaj kev ua haujlwm hlawv ntawm qhov kub siab.
4. Kev lag luam tshuaj txhuam hniav
(1) CMC muaj kev sib raug zoo nrog ntau yam khoom siv raw hauv cov tshuaj txhuam hniav;
(2) Cov tshuaj nplaum yog mos, tsis cais dej, tsis tev tawm, tsis tuab, thiab muaj cov npuas nplua nuj;
(3) Kev ruaj khov zoo thiab kev sib xws tsim nyog, uas tuaj yeem ua rau cov tshuaj txhuam hniav zoo nkauj, khaws cia thiab tshwj xeeb tshaj yog saj xis nyob;
(4) Tiv taus kev hloov pauv kub, ua kom noo noo thiab kho cov ntxhiab tsw qab.
(5) Kev txiav me me thiab cov plaub hau hauv cov kaus poom.
5. Kev lag luam zaub mov
(1) Cov dej haus uas muaj kua qaub: Ua ib qho stabilizer, piv txwv li, los tiv thaiv kev sib sau ua ke thiab kev faib ua pawg ntawm cov protein hauv cov mis nyuj yogurt vim yog kev sib sau ua ke; saj zoo dua tom qab yaj hauv dej; kev hloov pauv zoo sib xws.
(2) Cov dej khov nab kuab: Ua kom dej, rog, protein, thiab lwm yam tsim cov khoom sib xws, sib kis thiab ruaj khov kom tsis txhob muaj cov dej khov ua cov pob zeb.
(3) Mov ci thiab ncuav mog qab zib: CMC tuaj yeem tswj tau qhov viscosity ntawm cov batter, txhim kho cov dej noo thiab lub neej txee ntawm cov khoom.
(4) Cov noodles tam sim ntawd: ua rau kom cov noodles tawv thiab ua noj tsis tau zoo; nws muaj qhov zoo hauv cov ncuav qab zib thiab pancakes, thiab qhov chaw ntawm lub ncuav mog qab zib du thiab tsis yooj yim tawg.
(5) Cov tshuaj nplaum tam sim ntawd: ua cov roj hmab puag.
(6) CMC yog physiologically inert thiab tsis muaj calorific nqi. Yog li ntawd, cov khoom noj uas tsis muaj calorie tsawg tuaj yeem tsim tau.
6. Kev lag luam ntawv
CMC siv rau kev ntsuas qhov loj ntawm daim ntawv, ua rau daim ntawv muaj qhov ceev ceev, tiv taus kua mem zoo, sau cov quav ciab siab thiab du. Thaum ua xim ntawv, nws pab tswj qhov dov ntawm cov xim nplaum; nws tuaj yeem txhim kho qhov nplaum ntawm cov fibers hauv daim ntawv, yog li txhim kho lub zog thiab kev tiv thaiv kev quav ntawm daim ntawv.
7. Kev lag luam roj av
CMC siv rau hauv kev khawb roj thiab roj av, khawb qhov dej thiab lwm yam haujlwm.
8. Lwm tus
Cov nplaum rau khau, kaus mom, cwj mem, thiab lwm yam, cov tshuaj txhuam thiab cov xim rau tawv, cov tshuaj stabilizer rau cov tshuaj tua hluav taws ua npuas ncauj, thiab lwm yam.
Lub sijhawm tshaj tawm: Lub Ib Hlis-04-2023