KIMA CHEMICAL CO.,LTD.
KIMA CHEMICAL CO.,LTD.

Hydroxypropyl starch ether (HPS) is a modified starch that is commonly used as a thickener, stabilizer, and emulsifier in a variety of cement or gypsum based mortar applications. It is produced by reacting natural starch, typically derived from corn or potato, with propylene oxide in the presence of an alkali catalyst.

The resulting hydroxypropyl starch ether has improved properties compared to natural starch, including increased solubility, stability, and viscosity. 

In the construction industry, hydroxypropyl starch ether (HPS) is commonly used as a cement additive to improve the workability, strength, and durability of cement-based materials. It is particularly useful in applications where high-performance concrete is required.

When added to cement, HPS acts as a water reducer, which reduces the amount of water required to maintain a workable consistency, while also increasing the strength and durability of the final product. This is because HPS acts as a binder between the cement particles, which improves the cohesion and adhesion of the cement paste.

HPS can also be used as a thickening agent in cement-based mortars and grouts, improving their adhesion and preventing sagging or slumping during application. Additionally, it can be used as a dispersant to reduce the viscosity of cement slurries, which can improve the pumping and placing of concrete.

Types of Hydroxypropyl Starch Ether (HPS)

Types of Hydroxypropyl Starch Ether (HPS)

Key Properties of Hydroxypropyl Starch Ether

Key Properties of Hydroxypropyl Starch Ether

Solubility:

Hydroxypropyl starch ether (HPS) is soluble in water and forms a clear and stable solution with water. The solubility of HPS depends on the degree of substitution and the molecular weight of the polymer.

Viscosity:

HPS has good thickening and stabilizing properties due to its high viscosity. The viscosity of HPS is also dependent on the degree of substitution and the molecular weight of the polymer.

Film-forming ability:

HPS has a good film-forming ability, which makes it suitable for use in coatings and films.

Compatibility:

HPS is compatible with other polymers and can be used in combination with other materials to improve their properties.

Water retention:

HPS has good moisture retention properties and can help to improve the shelf life of cement products.

Adhesion:

HPS has good adhesion properties and can be used as an adhesive in various applications.


Key Properties of Hydroxypropyl Starch Ether

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