Starch ether is mainly used in construction mortar, which can affect the consistency of mortar based on gypsum, cement and lime, and change the construction and sag resistance of mortar. Starch ethers are usually used in conjunction with non-modified and modified cellulose ethers. It is suitable for both neutral and alkaline systems, and is compatible with most additives in gypsum and cement products (such as surfactants, MC, starch and polyvinyl acetate and other water-soluble polymers).
Main features:
(1) Starch ether is usually used in combination with methyl cellulose ether, which shows a good synergistic effect between the two. Adding an appropriate amount of starch ether to methyl cellulose ether can significantly improve the sag resistance and slip resistance of the mortar , with a high yield value.
(2) Adding an appropriate amount of starch ether to the mortar containing methyl cellulose ether can significantly increase the consistency of the mortar and improve the fluidity, making the construction smoother and the scraping smoother.
(3) Adding an appropriate amount of starch ether to the mortar containing methyl cellulose ether can increase the water retention of the mortar and prolong the open time.
(4) Starch ether is a chemically modified starch ether soluble in water, compatible with other additives in dry powder mortar, widely used in tile adhesives, repair mortar, plaster plaster, interior and exterior wall putty, gypsum-based embedded Joints and filling materials, interface agents, masonry mortar.
The characteristics of starch ether mainly lie in: (a) improving sag resistance; (b) improving workability; (c) improving the water retention rate of mortar.
Range of use:
Starch ether is suitable for all kinds of (cement, gypsum, lime-calcium) interior and exterior wall putty, and all kinds of facing mortar and plastering mortar.
It can be used as an admixture for cement-based products, gypsum-based products and lime-calcium products. Starch ether has good compatibility with other construction and admixtures; it is especially suitable for construction dry mixes such as mortar, adhesives, plastering and rolling materials. Starch ethers and methyl cellulose ethers (Tylose MC grades) are used together in construction dry mixes to impart higher thickening, stronger structure, sag resistance and ease of handling. The viscosity of mortars, adhesives, plasters and roll renders containing higher methyl cellulose ethers can be reduced by the addition of starch ethers.
Post time: Jun-13-2023