Cov hmoov putty feem ntau yog ua los ntawm cov khoom siv ua zaj duab xis (cov khoom sib txuas), cov khoom sau, cov neeg sawv cev khaws dej, cov khoom ua kom tuab, cov khoom ua kom tsis muaj npuas, thiab lwm yam. Cov khoom siv tshuaj lom neeg organic feem ntau hauv cov hmoov putty feem ntau suav nrog: cellulose, pregelatinized starch, starch ether, polyvinyl alcohol, dispersible latex hmoov, thiab lwm yam. Hauv qab no, Polycat yuav tshuaj xyuas kev ua tau zoo thiab kev siv ntawm ntau yam khoom siv tshuaj lom neeg rau koj ib qho zuj zus.
Fiber:
Fiber (Tebchaws Asmeskas: Fiber; Lus Askiv: Fiber) yog hais txog cov khoom uas muaj cov filaments txuas ntxiv lossis tsis txuas ntxiv. Xws li cov nroj tsuag fiber, cov plaub tsiaj, cov fiber txhob lo lo ntxhuav, cov fiber tsim, thiab lwm yam.
Cellulose:
Cellulose yog ib qho polysaccharide macromolecular uas muaj glucose thiab yog cov khoom tseem ceeb ntawm cov phab ntsa cell ntawm cov nroj tsuag. Thaum sov li chav tsev, cellulose tsis yaj hauv dej lossis hauv cov organic solvents. Cov cellulose hauv paj rwb ze li ntawm 100%, ua rau nws yog qhov chaw ntshiab tshaj plaws ntawm cellulose. Feem ntau, ntoo, cellulose suav txog 40-50%, thiab muaj 10-30% hemicellulose thiab 20-30% lignin.
Qhov sib txawv ntawm cellulose (sab xis) thiab starch (sab laug):
Feem ntau hais lus, ob qho tib si hmoov txhuv nplej siab thiab cellulose yog cov polysaccharides macromolecular, thiab cov mis molecular tuaj yeem qhia ua (C6H10O5) n. Qhov hnyav molecular ntawm cellulose loj dua li ntawm hmoov txhuv nplej siab, thiab cellulose tuaj yeem decomposed los tsim cov hmoov txhuv nplej siab. Cellulose yog D-glucose thiab β-1,4 glycoside Macromolecular polysaccharides tsim los ntawm cov bonds, thaum hmoov txhuv nplej siab yog tsim los ntawm α-1,4 glycosidic bonds. Cellulose feem ntau tsis yog branched, tab sis hmoov txhuv nplej siab yog branched los ntawm 1,6 glycosidic bonds. Cellulose tsis yaj zoo hauv dej, thaum hmoov txhuv nplej siab yaj hauv dej kub. Cellulose tsis rhiab rau amylase thiab tsis tig xiav thaum raug rau iodine.
Cellulose Ether:
Lub npe Askiv ntawmcellulose etheryog cellulose ether, uas yog ib qho polymer compound nrog ether qauv ua los ntawm cellulose. Nws yog cov khoom ntawm cov tshuaj tiv thaiv ntawm cellulose (cog) nrog tus neeg sawv cev etherification. Raws li cov qauv tshuaj lom neeg ntawm cov substituent tom qab etherification, nws tuaj yeem muab faib ua anionic, cationic thiab nonionic ethers. Nyob ntawm tus neeg sawv cev etherification siv, muaj methyl cellulose, hydroxyethyl methyl cellulose, carboxymethyl cellulose, ethyl cellulose, benzyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, cyanoethyl cellulose, benzyl cyanoethyl cellulose, carboxymethyl hydroxyethyl cellulose thiab phenyl cellulose, thiab lwm yam. Hauv kev lag luam kev tsim kho, cellulose ether kuj hu ua cellulose, uas yog lub npe tsis xwm yeem, thiab nws hu ua cellulose (lossis ether) kom raug.
Cov txheej txheem ua kom tuab ntawm Cellulose Ether Thickener:
Cellulose ether thickeners yog cov thickeners non-ionic uas thicken feem ntau los ntawm hydration thiab entanglement ntawm molecules.
Cov saw polymer ntawm cellulose ether yooj yim los tsim hydrogen bond nrog dej hauv dej, thiab hydrogen bond ua rau nws muaj hydration siab thiab inter-molecular entanglement.
Thaum lubcellulose etherYog tias muaj cov khoom ua kom tuab ntxiv rau hauv cov xim latex, nws nqus tau dej ntau heev, ua rau nws qhov ntim nthuav dav heev, txo qhov chaw dawb rau cov xim, cov khoom sau thiab cov khoom latex;
Tib lub sijhawm, cov cellulose ether molecular saw hlau tau sib txuas ua ke los ua ib lub qauv network peb-seem, thiab cov pigments, fillers thiab latex particles tau nyob ib puag ncig hauv nruab nrab ntawm lub mesh thiab tsis tuaj yeem ntws tau yooj yim.
Nyob rau hauv ob qho teebmeem no, qhov viscosity ntawm lub system tau zoo dua! Ua tiav qhov thickening effect uas peb xav tau!
Lub sijhawm tshaj tawm: Plaub Hlis-28-2024