Customize Consent Preferences

We 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. ... 

Always Active

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.

No cookies to display.

Functional cookies help perform certain functionalities like sharing the content of the website on social media platforms, collecting feedback, and other third-party features.

No cookies to display.

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.

No cookies to display.

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.

No cookies to display.

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.

No cookies to display.

What is the choice of HPMC viscosity when producing putty powder dry mortar?

Methyl cellulose MC and hydroxypropyl methyl cellulose (HPMC) have stable chemical properties. Mildew resistance and water retention are not affected by changes in pH.

Viscosity can be used between 50,000 and 200,000, but in production, higher viscosity is better. Viscosity is inversely proportional to bond strength. The higher the viscosity, the lower the strength.

Regarding the quality of cellulose, mainly the viscosity, it can be tested using a rotational viscometer; or it can be compared by a simple method.

For the comparison, take 1 gram of cellulose of the same viscosity. Add 100 grams of water, put it in a disposable cup and pour it out at the same time. Observe which one dissolves faster, has better clarity and thickens better. The better the transparency, the less impurities.

It is used for low-grade putty powder for interior walls, which has certain thickening and water retention effect and can increase leveling. However, it cannot be used for waterproof putty and external insulation dry mix.

This is because these cellulose will react with cement, grey calcium powder and gypsum powder, inorganic binders.

Many people think that these cellulose are alkaline, and generally cement and grey calcium powder are also alkaline. It is thought that they can be used in combination. However, CMC and CMS are not single elements.

The chloroacetic acid they use in the production process is acidic. The residue of the cellulose production process reacts with cement and gray calcium powder. So they cannot be combined. Many manufacturers have suffered great losses, which should be taken seriously.

whatsapp email