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200000 viscosity hydroxypropyl methyl cellulose

HPMC hydroxypropyl methyl cellulose quality is not the determinant of whiteness, some manufacturers in the production process can not be added to determine product quality whitening agent.

1. What is the role of redispersible powder in gypsum-based mortar?

Answer: The role of dispersible polymer powder in wet gypsum slurry:

The cold water instant type of hydroxypropyl methyl cellulose HPMC is surface-treated with glyoxal, and it is quickly dispersed in cold water, but it is not really dissolved. When the viscosity rises, the aqueous solution becomes clear. The hot melt type is not surface treated with glyoxal.

Cellulose products are all derived from natural cotton pulp or wood pulp, which are obtained through etherification. Different cellulose products use different etherification agents. Hydroxypropyl methylcellulose HPMC uses other types of etherification agents (chloromethane and propylene oxide), and hydroxyethyl cellulose HEC uses etherification agents. ethylene oxide.

Instant hydroxypropyl methyl cellulose (HPMC) is a non-ionic cellulose ether obtained from natural polymer material cellulose through a series of chemical processing. Hydroxypropyl methylcellulose (HPMC) is a white powder that dissolves in cold water to form a clear,

With the development of dry mix mortar, the cellulose ether has become an important admixture for cement mortar. Cellulose ethers are used as thickeners and water retention additives in dry mix mortar applications.

Types of Dry Powder (pre-mixed) Wall Putty Mortar:

HPMC (Hydroxypropyl methylcellulose) is generally used in putty powder with a viscosity of 100,000 mPa.s(NDJ), while mortar requires a relatively high viscosity and should be selected with a viscosity of 150,000mPa.s to achieve the desired effect. The most important role of HPMC is water retention and thickening secondly. Therefore, in putty powder, it is okay […]