what is the relationship between the viscosity and temperature of HPMC ?

HPMC as a kind of construction additive,the viscosity of HPMC is inversely proportional to temperature, which means that the viscosity decreases and the temperature decreases. The viscosity of a product we usually refer to refers to the result of testing its 2% water solution at a temperature of 20 °C.

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 during the winter, which is more conducive to construction. Otherwise, when the temperature is low, the viscosity of cellulose will increase, and when it is scraped, the hand feel will be heavy.

Medium viscosity: 75000-100000 mainly used for Wall putty(Skim Coat) due to it's good water retention.

High viscosity: 150000-200000 is mainly used for polystyrene granule insulation mortar rubber powder and vitrified microbead insulation mortar.

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

However, in general, the viscosity is increased and the water retention is better. Therefore, many dry mortar plants consider the cost, and replace the medium and low viscosity cellulose (20000-40000) with medium viscosity cellulose (75000-100000) to reduce the amount of addition.

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