Cov khoom tseem ceeb ntawm hydroxyethyl cellulose yog tias nws yog soluble hauv dej txias thiab dej kub, thiab tsis muaj gelling zog. Nws muaj ntau yam kev hloov pauv qib, solubility thiab viscosity. nag lossis daus. Hydroxyethyl cellulose kua tuaj yeem tsim cov yeeb yaj kiab pob tshab, thiab muaj cov yam ntxwv ntawm hom tsis-ionic uas tsis cuam tshuam nrog ions thiab muaj kev sib raug zoo.
① Kub thiab dej solubility: Piv nrog methyl cellulose (MC), uas tsuas yog soluble hauv dej txias, hydroxyethyl cellulose tuaj yeem yaj hauv dej kub lossis dej txias. Ntau yam ntawm solubility thiab viscosity zog, thiab tsis-thermal gelation.
②Ntshav tsis kam: Vim nws cov yam tsis-ionic, nws tuaj yeem ua ke nrog lwm cov dej-soluble polymers, surfactants thiab ntsev nyob rau hauv ntau yam. Yog li, piv nrog ionic carboxymethyl cellulose (CMC), hydroxyethyl cellulose muaj ntsev zoo dua.
③ Dej tuav, theem, ua zaj duab xis: nws lub peev xwm tuav dej yog ob npaug ntawm methyl cellulose, nrog kev tswj xyuas zoo heev thiab kev ua yeeb yaj kiab zoo heev, txo cov kua dej tsis zoo, tiv thaiv kev sib deev colloid.
Kev siv hydroxyethyl cellulose
Hydroxyethyl cellulose yog ib yam khoom uas tsis yog-ionic dej-soluble cellulose ether, dav siv nyob rau hauv architectural txheej, roj av, polymerization, tshuaj, siv txhua hnub, ntawv thiab number case, fabrics, ceramics, kev tsim kho, kev ua liaj ua teb thiab lwm yam lag luam. Nws muaj lub luag haujlwm ntawm thickening, bonding, emulsifying, dispersing thiab stabilizing, thiab tuaj yeem khaws dej, tsim ib zaj duab xis thiab muab kev tiv thaiv colloid nyhuv. Nws yog yooj yim soluble nyob rau hauv dej txias thiab dej kub, thiab muaj peev xwm muab ib tug tov nrog ntau yam viscosity. Ib qho ntawm cov cellulose ethers sai.
1 latex xim
Hydroxyethyl cellulose yog feem ntau siv thickener nyob rau hauv latex coatings. Ntxiv nrog rau cov txheej latex thickening, nws tseem tuaj yeem emulsify, disperse, stabilize thiab khaws dej. Nws yog tus cwj pwm los ntawm cov nyhuv thickening zoo kawg li, kev loj hlob xim zoo, cov cuab yeej ua yeeb yaj kiab thiab kev ruaj ntseg cia. Hydroxyethyl cellulose yog ib qho uas tsis yog-ionic cellulose derivative uas yuav siv tau nyob rau hauv ntau yam pH. Nws muaj kev sib raug zoo nrog lwm cov ntaub ntawv hauv cov khoom (xws li pigments, additives, fillers thiab ntsev). Cov coatings thickened nrog hydroxyethyl cellulose muaj rheology zoo ntawm ntau tus nqi shear thiab yog pseudoplastic. Kev tsim kho xws li txhuam hniav, cov menyuam txheej, thiab tshuaj tsuag tuaj yeem siv tau. Kev tsim kho zoo, tsis yooj yim rau drip, sag thiab txaws, thiab zoo leveling.
2 Polymerization
Hydroxyethyl cellulose muaj cov dej num ntawm dispersing, emulsifying, suspending thiab stabilizing nyob rau hauv lub polymerization los yog copolymerization Cheebtsam ntawm hluavtaws resins, thiab yuav siv tau raws li ib tug tiv thaiv colloid. Nws yog tus cwj pwm los ntawm kev muaj peev xwm dispersing, nyias "zaj duab xis" ntawm cov khoom, qhov loj me me, cov duab zoo ib yam, xoob hom, fluidity zoo, cov khoom siab transparency thiab ua haujlwm yooj yim. Vim tias hydroxyethyl cellulose tuaj yeem yaj hauv dej txias thiab dej kub, thiab tsis muaj qhov kub thiab txias, nws yog qhov tsim nyog rau ntau yam kev cuam tshuam polymerization.
Qhov khoom siv lub cev tseem ceeb los tshawb xyuas qhov zoo ntawm qhov tsis zoo yog qhov chaw (lossis interfacial lub zog, muaj zog intrefacial thiab gelation kub ntawm nws cov aqueous daws. Cov khoom ntawm hydroxyethyl cellulose yog tsim rau cov polymerization los yog copolymerization ntawm hluavtaws resins.
Hydroxyethyl cellulose muaj kev sib raug zoo nrog lwm cov dej-soluble cellulose ethers thiab PVA. Cov txheej txheem sib xyaw ua ke yog li tsim tuaj yeem tau txais cov txiaj ntsig zoo ntawm kev kawm los ntawm ib leeg lub zog thiab ua tiav ib qho tsis muaj zog. Cov khoom sib xyaw resin tsis tsuas yog muaj cov khoom zoo, tab sis kuj txo cov khoom poob.
3 roj drilling
Hauv cov roj drilling thiab ntau lawm, high-viscosity hydroxyethyl cellulose feem ntau yog siv los ua viscosifier rau cov kua ua tiav thiab cov kua dej tiav. Tsawg viscosity hydroxyethyl cellulose yog siv los ua cov kua dej poob qis. Nyob rau hauv ntau yam av nkos xav tau rau drilling, ua kom tiav, cementing thiab fracturing hauj lwm, hydroxyethyl cellulose yog siv los ua ib tug thickener kom tau zoo fluidity thiab stability ntawm av nkos. Thaum lub sij hawm drilling, nws tuaj yeem txhim kho cov xuab zeb nqa lub peev xwm ntawm cov av nkos thiab ua kom lub neej ua haujlwm ntev ntawm lub laum me ntsis. Nyob rau hauv cov khoom ua tiav theem qis thiab cov kua cementing, cov dej zoo heev txo cov khoom ntawm hydroxyethyl cellulose tuaj yeem tiv thaiv cov dej ntau los ntawm cov roj txheej los ntawm cov av nkos, thiab tuaj yeem txhim kho lub peev xwm ntawm cov roj txheej.
4 Txhua hnub tshuaj
Hydroxyethylcellulose yog ib qho zoo zaj duab xis qub, binder, thickener, stabilizer thiab dispersant nyob rau hauv tshuaj zawv plaub hau, tshuaj tsuag plaub hau, neutralizers, conditioners thiab tshuaj pleev ib ce; nyob rau hauv detergent hmoov Nws yog ib tug av redeposition agent. Hydroxyethyl cellulose yaj sai sai ntawm qhov kub thiab txias, uas tuaj yeem ua kom cov txheej txheem ntau lawm thiab txhim kho kev tsim khoom. Qhov pom tseeb ntawm cov tshuaj ntxuav tes uas muaj hydroxyethyl cellulose yog tias nws tuaj yeem txhim kho qhov smoothness thiab mercerization ntawm fabrics.
5 architecture
Hydroxyethyl cellulose tuaj yeem siv rau hauv cov khoom siv xws li cov pob zeb sib tov, cov mortars tshiab, gypsum plaster los yog lwm yam mortars, thiab lwm yam, kom khaws cov dej thaum lub sij hawm tsim ua ntej lawv teem thiab tawv. Ntxiv nrog rau kev txhim kho cov dej tuav ntawm cov khoom siv hauv tsev, hydroxyethyl cellulose tseem tuaj yeem ua kom lub sijhawm kho thiab qhib lub sijhawm ntawm stucco lossis mastic. Txo cov tawv nqaij, slippage thiab sagging. Qhov no tuaj yeem txhim kho kev tsim kho, txhim kho kev ua haujlwm, txuag lub sijhawm, thiab tib lub sijhawm ua kom lub ntim nthuav dav ntawm stucco, yog li txuag cov ntaub ntawv raw.
6 kev ua liaj ua teb
Hydroxyethyl cellulose yog siv nyob rau hauv tshuaj tua kab emulsion thiab ncua kev kawm ntawv formulations raws li ib tug thickener rau tshuaj tsuag emulsions los yog suspensions. Nws tuaj yeem txo qhov drift ntawm tus neeg sawv cev thiab ua kom nws ruaj khov rau cov nplooj ntoo ntawm cov nroj tsuag, yog li ua rau cov nyhuv ntawm foliar txau. Hydroxyethyl cellulose kuj tseem siv tau los ua cov yeeb yaj kiab tsim hauv cov noob txheej thiab txheej txheej; raws li ib tug binder thiab film-forming tus neeg sawv cev nyob rau hauv lub recycling ntawm luam yeeb nplooj.
7 Ntawv thiab Ink
Hydroxyethyl cellulose tuaj yeem siv los ua tus neeg sawv cev sizing ntawm daim ntawv thiab lub rooj tsavxwm thiab ua cov thickening thiab suspending tus neeg sawv cev rau cov dej hauv cov inks. Hauv cov txheej txheem papermaking, cov khoom zoo tshaj ntawm hydroxyethyl cellulose suav nrog kev sib raug zoo nrog feem ntau cov pos hniav, resins thiab inorganic ntsev, tsis tshua muaj foaming, tsis tshua muaj oxygen noj thiab muaj peev xwm tsim ib tug du nto zaj duab xis. Cov zaj duab xis muaj qhov qis permeability thiab muaj zog gloss, thiab tuaj yeem txo cov nqi. Daim ntawv loj nrog hydroxyethyl cellulose rau kev luam ntawv zoo. Hauv kev tsim cov dej-raws li tus number case, cov dej-raws li tus number case thickened nrog hydroxyethyl cellulose dries sai sai, muaj xim zoo diffusion, thiab tsis ua sticking.
8 qob
Nws tuaj yeem siv los ua cov ntawv khi thiab tus neeg sawv cev hauv cov ntaub ntawv luam tawm thiab dyeing muab tshuaj txhuam thiab latex xim; thickener rau sizing cov khoom nyob rau sab nraum qab ntawm cov ntaub pua plag. Hauv iav fiber ntau, nws yog siv los ua tus neeg sawv cev molding thiab binder; nyob rau hauv tawv pulp, nws yuav siv tau raws li hloov kho thiab binder. Muab ntau yam viscosity ntau rau cov coatings los yog cov nplaum, uas ua rau muaj kev sib txawv thiab ceev ceev ntawm cov txheej thiab txhim kho kev pom meej.
9 ceramics
High zog binder rau formulating ceramics.
10 tshuaj txhuam hniav
Nws tuaj yeem siv los ua cov thickener hauv kev tsim cov tshuaj txhuam hniav.
Post lub sij hawm: Sep-24-2022