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 water-soluble polymers such as polyvinyl acetate).
The main function
(1) Good rapid thickening ability: medium viscosity, high water retention;
(2) The dosage is small, and a lower dosage can have a good effect;
(3) Improve the anti-sag ability of the material itself;
(4) It has good lubricity, which can improve the operating performance of the material and make the operation smoother.
Main features
The characteristics of starch ether mainly lie in:
(a) Improve sag resistance;
(b) Improve constructability;
(c) Improve the water retention rate of mortar.
Synergy
Starch ether is usually used in conjunction 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. Higher yield value.
In the mortar containing methyl cellulose ether, adding an appropriate amount of starch ether can significantly increase the consistency of the mortar and improve the fluidity, making the construction smoother and the scraping smoother.
In the mortar containing methyl cellulose ether, adding an appropriate amount of starch ether can increase the water retention of the mortar and prolong the open time.
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 caulking and filling Materials, interface agents, masonry mortar.
Starch ether is suitable for all kinds of (cement, gypsum, lime calcium-based) interior and exterior wall putty, and various types of facing mortar 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 suitable for construction dry mixes such as mortar, adhesives, plastering and rolling materials. Starch ether and methyl cellulose ether (KimaCell MC grade) 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: Jan-10-2023