Defoamers for Gypsum Applications

Gypsum is a vital construction material widely used in plasterboard (drywall), gypsum plasters, mortars, and various other building products. However, foam generation is a common issue during the production and application of gypsum-based materials. Excessive foam can negatively impact production efficiency and lead to quality issues in the final product, such as surface defects, internal voids, and reduced strength. INVINO offers a range of high-performance defoamers specifically designed to tackle foam problems in gypsum systems,

During the mixing, pumping, pouring, or foaming stages of gypsum slurry processing, air is easily entrapped, forming stable foam. If not effectively controlled, this foam can lead to:

• Surface Defects: Pinholes and blemishes compromise the smoothness and appearance of gypsum boards or plaster surfaces.
• Uneven Internal Structure: Large, irregular air voids reduce the density and uniformity of the gypsum matrix.
• Reduced Strength: Entrapped air weakens the structural integrity and hardness of the gypsum-based material.
• Density Control Issues: Foam negatively affects the apparent density, which is critical in applications requiring precise density control.
• Lowered Production Efficiency: Foam can cause processing issues (e.g., pumping difficulties, overflows) or necessitate additional steps to manage.

INVINO’s specialized gypsum defoamers utilize advanced formulations designed to quickly eliminate and persistently suppress foam in gypsum systems.

• Rapid Defoaming Action: Quickly reduces the surface tension of foam bubbles, causing them to collapse rapidly.
• Long-Lasting Antifoam Performance: Provides sustained foam inhibition throughout the production or application process.
• Excellent Compatibility: Shows good compatibility with gypsum and other common additives (e.g., superplasticizers, retarders), without negatively affecting final product performance.
• Improved Product Quality: Significantly reduces surface and internal defects, enhancing the smoothness, strength, and durability of gypsum products.
• High Efficiency & Cost-Effectiveness: Achieves desired results at typically low dosage levels, helping customers manage costs.
• Ease of Use: Exhibits good dispersibility for easy incorporation into the gypsum mix.

Our defoamers are suitable for a variety of gypsum-based products and processes:

• Gypsum Board Manufacturing: Controls foam during the core foaming process of paper-faced gypsum boards, ensuring uniform core structure and proper bonding.
• Gypsum Plaster & Putty: Eliminates air bubbles during mixing and application for smooth, defect-free wall surfaces.
• Gypsum-Based Self-Leveling Mortar: Ensures good flowability and eliminates bubbles for a level, dense floor underlayment.
• Gypsum Molds & Decorative Products: Reduces pinholes, improving replication accuracy and surface finish.
• Other Gypsum Additive Applications: … (You can add more based on your product’s applicability)

We offer various types of defoamers to meet diverse gypsum application needs. Browse our recommended products below or contact us for tailored advice:

INVINO-1320 is a kind of non silicon defoamer with polyether as main material, supplemented by other additives. It is a highly effective liquid product to control foaming in aqueous system.

APPLICATIONS

• Cement mortar and cement products
• Gypsum, grouting material, grouting material,
• Imitation wood grouting material

Our experienced technical team can assist you in selecting the most suitable defoamer for your specific process and requirements.