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Do you know the application of cellulose ether prodction in construction chemical industry?
Cellulose ether is a kind of non-ionic semi-synthetic high molecular polymer. It has two kinds of water-soluble & solvent-based properties. It has different effects in different industries. For example, chemical building materials, it has the following compounding effects.
- Water retention agent
- Thickening agent
- Leveling property
- Film-forming property
Adding HPMC to the mortar, is the higher the viscosity the better?
Hydroxypropyl Methyl Cellulose (HPMC) plays an excellent role in the viscosity of wet mortar, which can significantly increase the adhesion between wet mortar and the base layer, and improve the anti-sagging performance of mortar, widely used in plastering mortar, brick bonding mortar, and external wall insulation system. The thickening effect of cellulose ether can also increase the resistance of raw materials, prevent material delamination, segregation and bleeding. HPMC can be used in fiber concrete, underwater concrete and self-compacting concrete.
The thickening effect of HPMC on cement-based materials comes from the viscosity of cellulose ether solution. Under the same conditions, the higher the viscosity of cellulose ether, the better the viscosity of the modified cement-based material, but if the viscosity is too large, it will affect the fluidity and operability of the material (such as a sticky plastering knife).
Self-leveling mortar and self-compacting concrete that require high fluidity require low viscosity of cellulose ether. In addition, the thickening effect of cellulose ether will increase the water demand of cement-based materials and increase the output of mortar.
Post time: Sep-16-2022