Generally speaking, the higher the viscosity, the better the water retention effect. However, the higher the viscosity, the higher the molecular weight of MC, and its solubility will be reduced accordingly, which has a negative impact on the strength and construction performance of mortar. The higher the viscosity, the more obvious the thickening effect on
HPMC Chinese name hydroxypropyl methyl cellulose, non-ionic, is often used as a water retention agent in dry-mixed mortar, and is the most commonly used water retention material in mortar. HPMC production process is mainly cotton fiber (domestic) through alkylation, etherification and generated a polysaccharide-based ether products. It is not charged itself and does not react
The main reason for the blistering of Wall putty powder is the problem of the wall. If the wall is pitted, uneven, and has small pits. It must be blistered. And the amount of blistering depends on the shear force of hydroxypropyl methylcellulose. The higher the viscosity of cellulose, the more bubbles, and vice versa.