Starch ether can endow cement and gypsum products with unique qualities. It has a similar chemical structure to cellulose and can not only
Provides functions similar to cellulose and has good compatibility with other building additives. The dosage of this product in mortar products is small, and extremely low addition can achieve high quality results.
Performance of starch ether in dry powder mortar
a. Starch ether, due to its special chemical structure, can effectively prevent the sagging phenomenon of thick layer mortar, which has a good improvement effect on the sliding of ceramic tiles and the sagging of thick layer plaster.
b. Adding an appropriate amount of starch ether to the mortar can prolong its opening time. The water retention performance of starch ether can remain stable with the increase of temperature. Therefore, when used in combination with ordinary water retention agents, this product can not only quickly improve the water retention performance of mortar, but also compensate for the disadvantage of the rapid decline of the water retention performance of ordinary water retention agents with the increase of temperature,,
c. It has a rapid thickening function for mortar and can improve the rheological properties of mortar products such as sprayed mortar and plastered mortar,,
d. Starch ether can effectively prevent the phenomenon of layering and segregation in mortar, which can be well applied in self leveling mortar.
Different effects of starch ether and cellulose ether in dry powder mortar
Starch ether is often used together with cellulose ether to complement the performance and advantages of these two products. Due to the fact that starch ether products are much cheaper than cellulose ether, the application of starch ether in mortar will significantly reduce the cost of mortar formulation.
Cellulose ether
Starch ether
Water attachment model
Mainly the interaction model
There is a good correlation between viscosity in aqueous solutions and mortar
There is no direct correlation between viscosity in aqueous solution and mortar
Good viscosity enhancement
Good resistance to sagging and sliding
Provide water retention of mortar
Improving work performance
Product features
Chemical structure
Starch ether, soluble in cold water
5% viscosity in 20 ℃ aqueous solution
300-800mpa · s
colour
White or light yellow
Bulk density g/L
Fine powder · 500-650
Active ingredients
90%
