Hydroxyethyl Methyl Cellulose Rau Kev Tsim Kho

Hydroxyethyl Methyl Cellulose, los yog HEMC, yog ib qho kev sib xyaw ua ke uas tau ua nrov nrov hauv kev tsim kho kev lag luam. Nws yog cov dej-soluble polymer muab tau los ntawm cellulose thiab feem ntau yog siv los ua thickening thiab binding tus neeg saib xyuas nyob rau hauv ntau yam kev siv, xws li mortar, grouts, thiab plaster. HEMC tseem hu ua methyl hydroxyethyl cellulose (MHEC) lossis methyl hydroxypropyl cellulose (MHPC) thiab muaj nyob rau hauv ntau qib, txhua tus muaj cov khoom tshwj xeeb thiab cov yam ntxwv.

Hauv tsab xov xwm no, peb yuav tshawb xyuas cov khoom thiab cov txiaj ntsig ntawm HEMC thiab nws cov ntawv thov hauv kev tsim kho kev lag luam.

Cov khoom ntawm HEMC

HEMC yog cov hmoov dawb lossis dawb dawb uas tsis muaj ntxhiab thiab tsis qab. Nws yog soluble nyob rau hauv dej txias thiab tsim ib tug ntshiab los yog me ntsis hazy tov. Lub viscosity ntawm cov tshuaj nyob ntawm qhov concentration ntawm HEMC thiab degree ntawm kev hloov pauv (DS), uas yog qhov piv ntawm cov hydroxyl pawg hloov los ntawm methyl thiab hydroxyethyl pawg rau tag nrho cov hydroxyl pawg hauv cellulose molecule.

HEMC muaj ntau yam khoom tsim nyog uas ua rau nws muaj txiaj ntsig zoo tshaj plaws hauv cov khoom siv:

1. Kev tuav dej: HEMC tuaj yeem nqus dej thiab tuav nws hauv qhov sib tov, txo cov dej uas xav tau thiab tiv thaiv kev shrinkage thiab tawg.
2. Thickening: HEMC nce viscosity ntawm kev sib xyaw, txhim kho kev ua haujlwm thiab tiv thaiv kev sib cais.
3. Kev khi: HEMC ua raws li kev khi, tuav qhov sib xyaw ua ke thiab txhim kho adhesion rau qhov chaw.
4. Kev tsim cov yeeb yaj kiab: HEMC tuaj yeem tsim cov yeeb yaj kiab nyias ntawm qhov chaw, txhim kho dej tsis kam thiab ua haujlwm ntev.

Kev siv ntawm HEMC hauv Kev Tsim Kho

HEMC yog dav siv nyob rau hauv kev tsim kho kev lag luam raws li ib tug additive nyob rau hauv ntau yam ntaub ntawv. Qee qhov ntawm nws cov kev siv feem ntau suav nrog:

1. Mortar: HEMC tau ntxiv rau hauv mortar los txhim kho kev ua haujlwm, txo cov dej xav tau, thiab ua kom cov dej khaws cia. Nws tseem txhim khu kev sib txuas lub zog thiab durability ntawm mortar.
2. Pobzeb Adhesives: HEMC yog siv rau hauv cov pobzeb nplaum los txhim kho kev ntub dej thiab txo qis, txhim kho qhov adhesion thiab durability ntawm cov vuas.
3. Grouts: HEMC tau ntxiv rau grouts los txhim kho kev ua haujlwm, txo qis thiab tawg, thiab txhim kho dej tsis kam.
4. Stucco thiab Plaster: HEMC yog siv rau hauv stucco thiab plaster los txhim kho kev ua haujlwm, txo kev tawg, thiab ua kom cov dej khaws cia. Nws kuj tseem txhim khu kev sib txuas lub zog thiab durability ntawm cov khoom.
5. Self-leveling tebchaw: HEMC yog ntxiv rau nws tus kheej-leveling tebchaw los txhim kho ntws thiab theem, txo shrinkage thiab cracking, thiab txhim khu kev tiv thaiv dej.

Cov txiaj ntsig ntawm HEMC hauv Kev Tsim Kho

HEMC muaj ntau yam txiaj ntsig hauv kev tsim kho, suav nrog:

1. Txhim kho kev ua haujlwm tau zoo: HEMC txhim kho kev ua haujlwm ntawm cov ntaub ntawv, ua kom yooj yim rau kev tswj thiab siv.
2. Txo cov dej thov: HEMC txo cov dej xav tau hauv kev sib tov, txhim kho lub zog thiab ua haujlwm ntev ntawm cov khoom.
3. Kev tuav dej ntau ntxiv: HEMC txhim kho cov dej khaws cia ntawm cov ntaub ntawv, tiv thaiv kev shrinkage thiab tawg thiab txhim kho lawv cov kav ntev.
4. Txhim kho adhesion: HEMC txhim kho qhov adhesion ntawm cov ntaub ntawv rau qhov chaw, txhim kho lawv cov kav ntev thiab lub zog.
5. Txhim kho dej tsis kam: HEMC tsim cov zaj duab xis nyias ntawm qhov chaw, txhim kho lawv cov dej tsis kam thiab ua haujlwm ntev.

Xaus

HEMC yog qhov sib xyaw ua ke uas muaj ntau yam txiaj ntsig hauv kev tsim kho kev lag luam. Nws cov khoom tshwj xeeb ua rau nws yog ib qho zoo tagnrho additive nyob rau hauv ntau yam ntaub ntawv, xws li mortar, grouts, thiab plaster. Los ntawm kev txhim kho kev ua haujlwm, txo cov dej xav tau, thiab txhim kho cov dej tuav thiab ua kom zoo, HEMC txhim kho lub zog, ruaj khov, thiab kev ua haujlwm ntawm kev tsim kho.