LOW MOLAR, HOMOGENEOUSLY SUBSTITUTED HEC FOR USE IN CEMENT-BASED SYSTEMS
Hydroxyethylcellulose with a low molar substitution and which is uniformly substituted is useful in cement-based systems, including mortars. The cement-based system exhibits long pot life, as well as very high water retention capability at hot temperature, as well as better paste stability and optim...
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Zusammenfassung: | Hydroxyethylcellulose with a low molar substitution and which is uniformly substituted is useful in cement-based systems, including mortars. The cement-based system exhibits long pot life, as well as very high water retention capability at hot temperature, as well as better paste stability and optimized setting behavior for hot as well as cold temperature compared to typical, cement- based systems with commercial cellulose ether compounds. Less hydrophilic cellulose ethers such as methylhydroxyethylcellulose can be added as a second cellulose ether.
Hidroxielilcelulosa con una sustitución molar baja y que es uniformemente sustituida es útil en sistemas a base de cemento, incluyendo morteros. El sistema a base de cemento presenta vida útil larga, así como capacidad de retención de agua muy alta a temperatura caliente, así como mejor estabilidad de pasta y comportamiento de fraguado optimizado para temperatura caliente así como para temperatura fría en comparación con los sistemas a base de cemento típicos con compuestos de éter de celulosa comerciales. Menos éteres de celulosa hidrófilos tales como metilhidroxietilcelulosa se pueden añadir como un segundo éter de celulosa. |
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