Cov nyhuv ntawm HEC rau Kev Nplaum Txheej

Hydroxyethyl cellulose (HEC)yog ib qho polymer uas tsis yog ionic soluble hauv dej. Nws yog dav siv hauv kev lag luam txheej vim nws cov dej solubility zoo, thickening, zaj duab xis-tsim cov khoom thiab cov dej num zoo heev. Hauv cov txheej txheem txheej, HEC tsis yog tsuas yog muab cov khoom rheological tsim nyog, tab sis kuj ua lub luag haujlwm tseem ceeb hauv kev sib txuas ntawm cov txheej txheem.

1. Cov yam ntxwv ntawm HEC

Cov molecule HEC yog tsim los ntawm cov saw hlau cellulose thiab hydroxyethyl substituents. Nws cov saw hlau cellulose muaj cov qauv polyhydroxy, uas tuaj yeem tsim kev sib cuam tshuam zoo nrog qhov chaw ntawm cov txheej txheej los ntawm hydrogen bonds, yog li txhim kho qhov kev nplaum ntawm cov txheej. Tsis tas li ntawd, cov hydroxyethyl substituent hauv AnxinCel®HEC molecule ua rau nws cov dej solubility ntau ntxiv, ua rau nws tuaj yeem sib npaug hauv cov txheej, yog li txhim kho qhov zoo ntawm cov zaj duab xis ntawm cov txheej.

2. Txoj kev ua haujlwm ntawm HEC ntawm kev nplaum txheej

HEC hauv cov txheej txheem feem ntau ua rau cov txheej txheem lo rau ntawm cov txheej txheem los ntawm cov txheej txheem hauv qab no:

Txhim kho qhov ntub dej ntawm qhov chaw

HEC muaj kev ua haujlwm zoo ntawm qhov chaw, uas tuaj yeem txo qhov nro ntawm qhov txheej thiab txhim kho qhov ntub ntawm qhov txheej rau ntawm qhov chaw substrate. Qhov ntub no ua rau cov txheej tiv tauj qhov chaw substrate ze dua, txo qhov sib txawv ntawm qhov sib txuas, yog li txhim kho qhov kev sib txuas ntawm cov txheej thiab cov substrate.

Kev sib txuas hydrogen ua rau kev sib txuas ntawm cov interfacial

Cov pab pawg hydroxyl hauv HEC molecules tuaj yeem tsim cov hydrogen bonds nrog cov pab pawg polar functional ntawm qhov chaw substrate (xws li ntoo, iav, hlau, thiab lwm yam). Cov nyhuv no ua rau kev sib txuas ntawm lub cev ntawm cov txheej thiab cov substrate zoo dua, ua rau cov txheej tsis tshua muaj peev xwm tev tawm hauv qab lub zog sab nraud.

Kev tswj hwm cov cuab yeej rheological

HEC muaj cov nyhuv tseem ceeb rau cov khoom rheological ntawm cov txheej, txo nws cov fluidity los ntawm kev ua kom cov txheej tuab thiab tiv thaiv kev sagging ntau dhau ntawm cov txheej ntawm qhov chaw substrate. Cov cuab yeej no pab cov txheej tsim cov zaj duab xis sib xws ntawm qhov chaw substrate thiab txo qhov kev txo qis ntawm kev nplaum los ntawm cov zaj duab xis tsis sib xws.

Cov nyhuv pab tsim cov yeeb yaj kiab

HEC tuaj yeem txhim kho qhov zoo ntawm cov txheej thaum lub sijhawm ua cov txheej txheem, kom ntseeg tau tias cov txheej muaj kev sib txuas thiab sib xws tom qab ziab. Qhov kev sib xws no txo ​​cov chaw tsis zoo ntawm cov txheej, yog li txhim kho qhov kev nplaum tag nrho.

3. Piv txwv ntawm HEC daim ntawv thov hauv ntau yam coatings

Cov txheej txheem architectural uas ntws los ntawm dej

Hauv cov txheej txheem architectural, HEC txhim kho qhov kev nplaum ntawm cov txheej txheem rau phab ntsa substrates (xws li cement lossis gypsum) los ntawm kev ua kom tuab, txhim kho wettability, thiab txhim kho lub zog ntawm zaj duab xis. Tsis tas li ntawd, HEC cov khoom tiv thaiv kev sagging pab txhawb rau qhov du ntawm qhov txheej txheem tom qab thov.

Cov txheej ntoo

Rau cov txheej ntoo, qhov cuam tshuam ntawm hydrogen bonding ntawm HEC yog qhov pom tseeb tshwj xeeb. Cov ntoo nto muaj ntau pawg hydroxyl, thiab HEC tuaj yeem tsim kev sib txuas nrog nws, ua rau kev txhim kho qhov ruaj khov thiab kev nplaum ntawm cov txheej.

Cov xim hlau pleev xim

Hauv cov txheej hlau, qhov kev txhim kho wettability ntawm HEC ua rau cov txheej kom zoo dua npog cov hlau nto thiab ua kom cov txheej lo ntawm polarity. Qhov no yog qhov tseem ceeb tshwj xeeb hauv cov txheej tiv thaiv xeb.

Cov txheej iav

HEC muaj cov nyhuv zoo rau kev nplaum rau ntawm cov nplaim tsis du xws li iav, thiab cov yam ntxwv ntawm cov hydroxyl pawg hauv nws cov molecules tuaj yeem ua rau tsis muaj kev sib raug zoo ntawm cov tshuaj ntawm cov iav thiab cov txheej.

4. Kev txwv ntawm HEC ntawm kev nplaum txheej

Txawm hais tiasHECmuaj qhov zoo tseem ceeb hauv kev txhim kho kev nplaum txheej, nws kuj muaj qee qhov kev txwv. Piv txwv li, HEC yooj yim nqus cov dej noo hauv qhov chaw noo noo siab, uas yuav ua rau kev ua haujlwm ntawm txheej txo qis. Tsis tas li ntawd, rau qee cov txheej txheem kev lag luam uas xav tau siab, HEC yuav tsum tau siv ua ke nrog lwm cov khoom ntxiv kom ua tiav kev ua tau zoo dua.

Ua ib qho tseem ceeb thickener thiab zaj duab xis-tsim additive, kev siv AnxinCel®HEC hauv coatings zoo heev txhim kho qhov lo rau ntawm cov coatings. Nws ua rau cov coatings hloov kho tau zoo dua rau ntau yam substrates los ntawm ntau txoj hauv kev xws li txhim kho wettability, tsim hydrogen bonds, thiab txhim kho cov khoom tsim zaj duab xis. Txawm li cas los xij, hauv kev siv tiag tiag, qhov ntxiv thiab kev sib raug zoo ntawm HEC yuav tsum tau ua kom zoo tshaj plaws ua ke nrog cov mis tshwj xeeb thiab qhov chaw siv kom muab kev ua si tag nrho rau nws lub luag haujlwm.