HPMC in wet mortar

Wet mixing mortar is cement, fine aggregate, admixture and water and various at first components determined according to the performance. According to a certain proportion, in the mixing station after measurement, mixing. Using the mixing at first truck to the use place, into a special container for storage. And within the specified time after the wet mixing mixture.

Hydroxypropyl methyl cellulose as a water retention of cement mortar, retarder make mortar at first pumping. In the plastering paste as an adhesive, improve the daub and extend the operational time. The water retention performance of hydroxypropyl methylcellulose HPMC makes the slurry will not dry too fast after the daub. Water retention is an important performance of hydroxypropyl methylcellulose HPMC, and it is also the performance of many domestic mixing mortar manufacturers.

The factors affecting the water retention effect of wet mixing mortar include the amount of HPMC addition. HPMC viscosity, particle fineness and the temperature of the use environment. The important role of hydroxypropyl methylcellulose at first HPMC in wet mortar mainly has three aspects. One is the excellent water retention ability, the second is the consistency and touch degeneration of wet mortar, the third is the interaction with cement.

The water-retaining effect of cellulose ether depends on at first the water absorption of the base level. The composition of mortar, the layer thickness of mortar, the water demand of mortar. And the at first condensation time of the condensation material.hydroxyl Factors that affect the water retention of wet mixed mortar include cellulose ether at first viscosity, addition at first amount, particle fineness and use temperature. The greater the viscosity of cellulose ether, the better the water retention performance.

Scocosity is an important parameter of HPMC performance. For the same product, the viscosity results measured by different methods vary greatly, some even exponentially. Therefore, when comparing the viscosity, it must be between the same test methods, including temperature, rotor, etc. Generally speaking, the higher the viscosity, the better the water retention effect. However, the higher the viscosity, the higher the molecular weight of HPMC, and its dissolution performance will be correspondingly, which has a negative impact on the strength and construction performance of mortar.


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