EUROPEAN COATINGS SHOW 2025
March 13th 2025We use cookies to help you navigate efficiently and perform certain functions. You will find detailed information about all cookies under each consent category below.
The cookies that are categorized as "Necessary" are stored on your browser as they are essential for enabling the basic functionalities of the site. ...
Necessary cookies are required to enable the basic features of this site, such as providing secure log-in or adjusting your consent preferences. These cookies do not store any personally identifiable data.
Functional cookies help perform certain functionalities like sharing the content of the website on social media platforms, collecting feedback, and other third-party features.
Analytical cookies are used to understand how visitors interact with the website. These cookies help provide information on metrics such as the number of visitors, bounce rate, traffic source, etc.
Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors.
Advertisement cookies are used to provide visitors with customized advertisements based on the pages you visited previously and to analyze the effectiveness of the ad campaigns.
HPMC manufacturer-Factors Affecting Water Retention of Cellulose ether
The greater the viscosity of cellulose ether is, the better the water retention property will be. The viscosity is an important parameter of HPMC performance. At present, different HPMC manufacturers use different methods and apparatus to measure the viscosity of HPMC, and the main methods are Haake Rotovisko, Hoppler, Ubbelohde and Brookfield. For the same product, the results of the viscosity measured by different methods vary greatly, and some are even multiplied differences. Therefore, the comparison of the viscosity must be made by he same test method, including the temperature, rotor, etc.
In general, the higher the viscosity is, the better the water retention effects will be. However, When the viscosity and the molecular weight of HPMC are higher, its dissolution performance will be reduced accordingly, which has a negative impact on the strength and construction performance of mortar. The higher the viscosity is, the more obvious the thickening effects on the mortar will be, but it is not a proportional relationship. The higher the viscosity is, the more sticky the wet mortar will be. That is, it will show stickiness to the scraper and high adhesion to the substrate. But it is of little help for increasing the structural strength of the wet mortar itself. During construction, it shows that the anti-sag performance is not obvious. Conversely, some methyl cellulose ethers with low viscosity but after modification can have excellent performance in improving the structural strength of the wet mortar.
The greater the addition of cellulose ether in the mortar is, the better the water retention properties will be; the higher the viscosity is, the better the water retention properties will be.
Tags: