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Relationship between viscosity and temperature of HPMC

January 13, 2022by admin0

The viscosity of hydroxypropyl methylcellulose HPMC is inversely proportional to the temperature, that is, the viscosity increases as the temperature decreases. We usually say that the viscosity of hydroxypropyl methylcellulose HPMC refers to the test result of hydroxypropyl methylcellulose HPMC at a temperature of 20% in a 2% aqueous solution.

In practical applications, in areas with large temperature differences between summer and winter, it should be noted that it is recommended to use a relatively low viscosity in winter, which is conducive to construction. Otherwise, when the temperature is low, the viscosity of hydroxypropyl methylcellulose HPMC will increase, when the batch is scraped, the feel will be heavy.

Hydroxypropyl methylcellulose HPMC Medium viscosity: 75000-100000 Mainly used for putty powder

Reason: Moderate viscosity and good water retention

Hydroxypropyl methylcellulose HPMC high viscosity: 150000-200000 Mainly used for thermal insulation mortar, ordinary mortar, special mortar, tile adhesive, etc.

Reasons: The viscosity is high, the mortar is not easy to sag, and the construction is improved.

But generally speaking, the higher the viscosity, the better the water retention, so the dry powder mortar generally uses high viscosity hydroxypropyl methylcellulose HPMC

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