Hydroxyethyl Cellulose
Hydroxyethyl cellulose (HEC) yog ib qho cellulose ether uas tsis yog ionic soluble.cov khoom siv los ntawm lwm yamuas tuaj yeem nyob ua ke nrog ntau lwm cov polymers uas yaj hauv dej, surfactants, thiab ntsev. HEC muaj cov khoom ntawm thickening, suspension, adhesion, emulsification, stability film formation, dispersion, water retention, anti-microbial protection thiab colloidal protection. Nws tuaj yeem siv dav hauv coatings, cosmetics, oil drilling thiab lwm yam lag luam.
Cov khoom tseem ceeb ntawmHydroxyethyl cellulose(HEC)yog tias nws tuaj yeem yaj rau hauv dej txias thiab dej kub, thiab tsis muaj cov yam ntxwv gel. Nws muaj ntau yam kev hloov pauv, solubility thiab viscosity. Nws muaj kev ruaj khov thermal zoo (qis dua 140 ° C) thiab tsis tsim nyob rau hauv cov xwm txheej acidic. nag lossis daus. Cov kua hydroxyethyl cellulose tuaj yeem tsim cov zaj duab xis pob tshab, uas muaj cov yam ntxwv tsis-ionic uas tsis cuam tshuam nrog ions thiab muaj kev sib raug zoo.
Cov Khoom Siv Tshuaj
| Qhov tsos | Dawb rau cov hmoov dawb dawb |
| Qhov loj ntawm cov khoom me me | 98% dhau 100 mesh |
| Kev hloov Molar rau ntawm degree (MS) | 1.8~2.5 |
| Cov seem ntawm kev sib txuas (%) | ≤0.5 |
| Tus nqi pH | 5.0~8.0 |
| Cov dej noo (%) | ≤5.0 |
Cov khoom Cov Qib
| HECqib | Qhov viscosity(NDJ, mPa.s, 2%) | Qhov viscosity(Brookfield, mPa.s, 1%) |
| HEC HS300 | 240-360 | 240-360 |
| HEC HS6000 | 4800-7200 | |
| HEC HS30000 | 24000-36000 | 1500-2500 |
| HEC HS60000 | 48000-72000 | 2400-3600 |
| HEC HS100000 | 80000-120000 | 4000-6000 |
| HEC HS150000 | 120000-180000 | 7000 feeb |
CCov yam ntxwv ntawm HEC
1.Ua kom tuab
HEC yog ib qho khoom siv thickener zoo tagnrho rau cov tshuaj pleev ib ce thiab cov tshuaj pleev ib ce. Hauv kev siv ua haujlwm, kev sib xyaw ua ke ntawm kev thickening thiab kev ncua, kev nyab xeeb, kev sib kis, thiab kev khaws cia dej yuav tsim cov txiaj ntsig zoo dua.
2.Pseudoplasticity
Pseudoplasticity yog hais txog cov khoom uas qhov viscosity ntawm cov tshuaj txo qis nrog rau qhov nce ntawm qhov ceev. Cov xim latex uas muaj HEC yooj yim siv nrog txhuam lossis cov menyuam thiab tuaj yeem ua rau qhov du ntawm qhov chaw, uas kuj tuaj yeem ua rau kev ua haujlwm zoo dua; cov tshuaj zawv plaub hau uas muaj HEC muaj cov kua dej zoo thiab muaj viscous heev, yooj yim rau dilute, thiab yooj yim rau disperse.
3.Kev kam rau ntsev
HEC ruaj khov heev hauv cov tshuaj ntsev uas muaj concentration siab thiab yuav tsis lwj mus rau hauv lub xeev ionic. Siv rau hauv electroplating, qhov chaw ntawm cov khoom plated tuaj yeem ua tiav thiab ci dua. Qhov tseem ceeb tshaj plaws yog tias nws tseem muaj viscosity zoo thaum siv rau hauv cov xim latex uas muaj borate, silicate thiab carbonate.
4.Kev tsim zaj duab xis
Cov khoom tsim zaj duab xis ntawm HEC tuaj yeem siv tau rau ntau yam lag luam. Hauv kev ua haujlwm ua ntawv, kev txheej nrog HEC-muaj glazing tus neeg sawv cev tuaj yeem tiv thaiv kev nkag mus ntawm cov roj, thiab tuaj yeem siv los npaj cov kev daws teeb meem rau lwm yam ntawm kev tsim ntawv; hauv cov txheej txheem spinning, HEC tuaj yeem ua rau kom muaj qhov elasticity ntawm cov fibers thiab txo cov khoom puas tsuaj rau lawv. Hauv qhov loj me, dyeing thiab tiav cov txheej txheem ntawm cov ntaub, HEC tuaj yeem ua raws li ib daim ntawv tiv thaiv ib ntus. Thaum nws txoj kev tiv thaiv tsis xav tau, nws tuaj yeem ntxuav tawm ntawm cov fiber nrog dej.
5.Kev khaws dej
HEC pab kom cov dej noo ntawm lub cev nyob rau hauv qhov zoo tagnrho. Vim tias me ntsis ntawm HEC hauv cov kua dej tuaj yeem tau txais cov txiaj ntsig zoo ntawm kev khaws dej, yog li ntawd lub cev txo qhov kev xav tau dej thaum lub sijhawm ua cov khoom sib xyaw. Yog tsis muaj kev khaws dej thiab kev sib txuas, cov cement mortar yuav txo nws lub zog thiab kev sib koom ua ke, thiab av nplaum kuj tseem yuav txo nws cov yas nyob rau hauv qee qhov kev nyuaj siab.
Cov ntawv thov
1.Xim pleev xim latex
Hydroxyethyl cellulose yog cov khoom siv thickener feem ntau siv rau hauv cov txheej latex. Ntxiv rau kev ua kom cov txheej latex tuab, nws kuj tseem tuaj yeem emulsify, disperse, stabilize thiab khaws cia dej. Nws muaj cov yam ntxwv los ntawm cov nyhuv thickening, kev loj hlob zoo ntawm xim, cov yam ntxwv ua zaj duab xis thiab kev ruaj khov ntawm kev khaws cia. Hydroxyethyl cellulose yog cov cellulose derivative non-ionic thiab tuaj yeem siv 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 txheej thickened nrog hydroxyethyl cellulose muaj rheology zoo thiab pseudoplasticity ntawm ntau yam shear rates. Cov txheej txheem tsim xws li txhuam, roller coating thiab txau tuaj yeem siv tau. Kev tsim kho zoo, tsis yooj yim rau drip, sag thiab splash, thiab cov yam ntxwv leveling kuj zoo.
2.Kev ua kom polymerization
Hydroxyethyl cellulose muaj cov haujlwm ntawm kev tawg, emulsifying, suspending thiab stabilizing hauv cov khoom polymerization lossis copolymerization ntawm cov khoom siv hluavtaws, thiab tuaj yeem siv ua colloid tiv thaiv. Nws yog tus cwj pwm los ntawm kev muaj peev xwm tawg tau zoo, cov khoom tshwm sim muaj cov khoom me me "zaj duab xis", qhov loj me me, cov khoom zoo ib yam, cov duab xoob, cov kua dej zoo, cov khoom pob tshab siab, thiab kev ua tiav yooj yim. Vim tias hydroxyethyl cellulose tuaj yeem yaj hauv dej txias thiab dej kub thiab tsis muaj qhov kub thiab txias gelation, nws tsim nyog dua rau ntau yam kev cuam tshuam polymerization.
Cov khoom tseem ceeb ntawm cov tshuaj dispersant yog qhov nro ntawm qhov chaw (lossis interfacial), lub zog interfacial thiab qhov kub ntawm nws cov kua dej. Cov khoom no ntawm hydroxyethyl cellulose yog qhov tsim nyog rau kev polymerization lossis copolymerization ntawm cov resins hluavtaws.
Hydroxyethyl cellulose muaj kev sib raug zoo nrog lwm cov cellulose ethers uas yaj tau hauv dej thiab PVA. Lub kaw lus sib xyaw ua ke los ntawm qhov no tuaj yeem tau txais cov txiaj ntsig zoo ntawm kev ua kom tiav qhov tsis muaj zog ntawm ib leeg. Cov khoom siv resin ua tom qab sib xyaw tsis yog tsuas yog zoo xwb, tab sis kuj txo cov khoom poob.
3.Kev khawb roj
Hauv kev khawb roj thiab kev tsim khoom, hydroxyethyl cellulose uas muaj viscosity siab feem ntau yog siv los ua viscosifier rau cov kua ua tiav thiab cov kua ua tiav. hydroxyethyl cellulose uas muaj viscosity qis yog siv los ua tus neeg sawv cev poob kua. Ntawm ntau yam av nkos uas xav tau rau kev khawb, ua tiav, cementing thiab fracturing, hydroxyethyl cellulose yog siv los ua cov khoom tuab kom tau txais cov kua zoo thiab ruaj khov ntawm cov av nkos. Thaum lub sijhawm khawb, lub peev xwm nqa cov av nkos tuaj yeem txhim kho, thiab lub neej ua haujlwm ntawm lub laum tuaj yeem ntev dua. Hauv cov kua ua tiav qis thiab cov kua cementing, kev ua haujlwm txo qis kua zoo heev ntawm hydroxyethyl cellulose tuaj yeem tiv thaiv ntau cov dej nkag mus rau hauv cov roj txheej los ntawm cov av nkos thiab txhim kho lub peev xwm tsim khoom ntawm cov roj txheej.
4.Kev lag luam tshuaj lom neeg txhua hnub
Hydroxyethyl cellulose yog ib qho ua tau zoo hauv kev tsim cov zaj duab xis, cov khoom siv khi, cov khoom ua kom tuab, cov khoom ruaj khov thiab cov khoom tawg hauv cov tshuaj zawv plaub hau, cov tshuaj tsuag plaub hau, cov tshuaj ua kom tsis muaj zog, cov tshuaj pleev plaub hau thiab cov tshuaj pleev ib ce; hauv cov hmoov ntxuav tes, Medium yog ib qho tshuaj uas ua rau cov av rov qab los. Hydroxyethyl cellulose yaj sai sai ntawm qhov kub siab, uas tuaj yeem ua kom cov txheej txheem ntau lawm sai dua thiab txhim kho kev ua haujlwm ntau lawm. Qhov tshwj xeeb ntawm cov tshuaj ntxuav tes uas muaj hydroxyethyl cellulose yog tias nws tuaj yeem txhim kho qhov du thiab mercerization ntawm cov ntaub.
5 Lub Tsev
Hydroxyethyl cellulose siv tau rau hauv cov khoom siv hauv kev tsim kho xws li cov sib tov ua vaj tse, cov mortar sib xyaw tshiab, gypsum plaster lossis lwm yam mortars, thiab lwm yam, kom khaws dej thaum lub sijhawm tsim kho ua ntej lawv teeb thiab tawv. Ntxiv nrog rau kev txhim kho kev khaws dej ntawm cov khoom siv hauv kev tsim kho, hydroxyethyl cellulose kuj tseem tuaj yeem ncua lub sijhawm kho thiab qhib ntawm plaster lossis cement. Nws tuaj yeem txo qhov tawv nqaij, kev plam thiab kev sagging. Qhov no tuaj yeem txhim kho kev ua haujlwm ntawm kev tsim kho, ua kom muaj kev ua haujlwm zoo dua, txuag lub sijhawm, thiab tib lub sijhawm ua kom muaj peev xwm nce tus nqi ntawm mortar, yog li txuag cov khoom siv raw.
6 Kev Ua Liaj Ua Teb
Hydroxyethyl cellulose siv rau hauv cov tshuaj tua kab emulsion thiab cov tshuaj suspension, ua ib qho thickener rau cov tshuaj tsuag emulsions lossis suspensions. Nws tuaj yeem txo qhov drift ntawm cov tshuaj thiab ua rau nws lo rau ntawm nplooj ntawm cov nroj tsuag, yog li ua rau kev siv ntawm kev tsuag nplooj ntau dua. Hydroxyethyl cellulose kuj tseem siv tau ua tus neeg sawv cev rau zaj duab xis rau cov txheej txheej noob; ua tus neeg sawv cev thiab tus neeg sawv cev rau zaj duab xis rau kev siv cov nplooj luam yeeb rov qab.
7 Daim ntawv thiab kua mem
Hydroxyethyl cellulose siv tau ua tus neeg sawv cev rau ntawm daim ntawv thiab daim ntawv cardboard, nrog rau tus neeg sawv cev ua kom tuab thiab dai rau cov kua mem uas yog dej. Hauv cov txheej txheem ua ntawv, cov khoom zoo tshaj plaws ntawm hydroxyethyl cellulose suav nrog kev sib raug zoo nrog feem ntau cov pos hniav, cov resins thiab cov ntsev inorganic, ua npuas dej tsawg, siv oxygen tsawg thiab muaj peev xwm tsim cov zaj duab xis du. Cov zaj duab xis muaj qhov permeability qis thiab muaj zog ci, thiab tseem tuaj yeem txo cov nqi. Daim ntawv nplaum nrog hydroxyethyl cellulose tuaj yeem siv rau kev luam cov duab zoo. Hauv kev tsim cov kua mem uas yog dej, cov kua mem uas yog dej uas muaj hydroxyethyl cellulose tuab qhuav sai, muaj xim zoo diffusibility, thiab tsis ua rau lo.
8 daim ntaub
Nws siv tau ua tus binder thiab sizing agent hauv kev luam ntawv thiab zas xim rau ntaub, sizing agent thiab latex coating; thickening agent rau sizing cov ntaub ntawv nyob rau sab nraum qab ntawm daim ntaub pua plag. Hauv cov iav fiber, nws siv tau ua tus neeg sawv cev thiab nplaum; hauv cov tawv slurry, nws siv tau ua modifier thiab nplaum. Muab ntau yam viscosity rau cov coatings lossis nplaum no, ua rau cov txheej ntau dua thiab lo sai, thiab tuaj yeem txhim kho qhov meej ntawm kev luam ntawv thiab zas xim.
9 Cov Khoom Siv Ua Los Ntawm Av nplaum
Nws siv tau los tsim cov nplaum muaj zog rau cov khoom siv ceramics.
10.tshuaj txhuam hniav
Nws siv tau ua ib qho thickener hauv kev tsim cov tshuaj txhuam hniav.
Ntim:
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Lub sijhawm tshaj tawm: Lub Ib Hlis-01-2024