Some common problems in cellulose application(1)

1.What is the appropriate viscosity of HPMC?

Putty powder is generally 100,000.  The mortar requires higher requirements.  It needs 150,000 to be used.  HPMC most important function is to keep water, followed by thickening.  In Putty powder, as long as the water retention is good and the viscosity is lower (70,000-80,000), it is also possible. Of course, the viscosity is higher and the relative water retention is better. When the viscosity exceeds 10,000,  the viscosity has little effect on water retention.

2. What are the main raw materials of HPMC?

The main raw materials of HPMC are refined cotton, chloroform, propylene oxide, and other raw materials .

3. What are the main technical indicators of HPMC?

Some users are concerned about hydroxypropyl content and viscosity. With high content, water retention is generally better. High viscosity, water retention, relative (rather than absolute) is better. And the viscosity is high, it is better to use in cement mortar.

4. What is the main role of HPMC in Putty powder and whether chemistry occurs?

Answer: HPMC plays three roles in thickening, water retention and construction of Putty powder. Thickening: Cellulose can thicken to suspend, keep the solution uniform up and down, and resist flow hanging. Water retention: make Putty powder dry slowly and assist lime calcium to react under the action of water. Construction: cellulose has lubricating effect and can make Putty powder have good workability. HPMC does not participate in any chemical reaction, but only plays an auxiliary role.

5. HPMC is Nonionic cellulose ether, so what is Nonionic cellulose ether?

A: Generally speaking, nonions are substances that are not ionized in water. In other words, HPMC is placed in water and does not dissociate into charged ions, but exists in the form of molecules.

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