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Tenessy HPS for Gypsum Plaster
Hydroxypropyl Starch Ether (HPS) is a modified starch-based additive designed to improve the performance of gypsum plaster and other drymix building materials. Made from natural polymeric starch through controlled etherification and physical modification, HPS offers excellent water retention, workability, and consistency.
In gypsum plaster formulations, HPS acts as a multifunctional additive that optimizes the setting time, prevents cracking, and enhances the smoothness of the final surface. It provides an ideal balance between water demand, adhesion, and sag resistance—ensuring a more stable and easy-to-apply plaster mixture.
How DoesHPS Work in Gypsum Plaster?
HPS works by forming a stable colloidal network when dissolved in water.
This network interacts with gypsum particles and other components in the plaster to:
- Improve water retention, keeping the mix workable for a longer period.
- Enhance viscosity, which prevents segregation and improves spreadability.
- Stabilize the mixture, reducing bleeding and ensuring uniform consistency.
- Modify setting time, giving workers more flexibility during application.
- Enhance adhesion, helping the plaster bond firmly to substrates such as brick, concrete, or blockwork.
By improving these key physical properties, HPS ensures that the plaster remains smooth, durable,
and easy to work with—both for manual and machine applications.
Recommended HPS Products
For gypsum plaster applications, we recommend the following HPS grades:
HPS S301
Balanced viscosity and water retention, suitable for standard gypsum plaster.
HPS S600
High viscosity and improved workability, ideal for machine-applied or high-performance formulations.
HPS S1000
Enhanced viscosity, ensuring better bonding.
*Our technical team can help select the right grade based on your specific requirements and formulation design.
Benefits of Using HPS in Gypsum Plaster
- Better Workability – Improves the flow and spread of gypsum plaster, reducing labor fatigue and ensuring a uniform surface finish.
- Excellent Water Retention – Prevents rapid water loss into the substrate, leading to better curing and stronger adhesion.
- Controlled Setting Time – Provides flexibility for various site conditions and application methods.
- Smooth Surface Finish – Enhances the consistency and reduces surface defects such as cracks or pinholes.
- Enhanced Adhesion Strength – Ensures better bonding between plaster and base materials.
- Eco-Friendly Additive – Derived from natural starch, non-toxic, and safe for the environment.
More Solutions and Applications
TENESSY™ HPS improves the workability, consistency, and adhesion of gypsum-based materials. It ensures smooth application and reliable performance in plasters, wall putty, joint fillers, and other gypsum products.
Partner with TENESSY — Your Trusted HPS Supplier
Why Choose TENSESSY™ HPS
- Consistent Quality: Each batch is tested for viscosity, purity, and performance stability.
- Customized Solutions: We offer tailored grades for different drymix applications—plaster, putty, and mortar.
- Strong Technical Support: Our R&D team provides formulation guidance and on-site technical assistance.
- Global Supply Capacity: Reliable production and delivery for both small and bulk orders.
- Sustainable Material: Produced from renewable starch sources, aligned with green building practices.
Request a Free Sample
Tenessy offers free samples of HPS for testing and formulation development. Contact our sales team to request your sample and experience the difference in gypsum plaster performance.
Packaging & Storage
Packaging: 25kg paper or PP woven bags with inner PE liner.
Storage: Store in a cool, dry place away from moisture and direct sunlight.
Shelf Life: 12 months in original packaging. Once opened, use promptly to prevent moisture absorption.
