Powder Defoamer – High-Performance Powder Additive for Dry Mix Mortars and Gypsum Systems
Control foam, enhance density, improve surface quality, and optimize mechanical performance in cement- and gypsum-based formulations.
What Is a Powder Defoamer?
Powder defoamers are specialized powdered additives formulated to suppress foam and eliminate entrained air during mixing and application of dry mix construction materials. Unlike liquid defoamers, they are stable in dry formulations and activate upon water addition, offering efficient foam control without compromising storage stability or powder flowability.
Typical applications include:
- Tile Adhesives
- Wall Putty and Skim Coat
- Self-Leveling Mortar
- Repair Mortar
- Gypsum Plaster and Putty
- Cementitious Waterproofing
Proper foam control is critical in dry mix systems because even small amounts of entrained air can significantly reduce density, compressive strength, and adhesion, while increasing surface defects like pinholes or craters.
Technical Mechanism
Powder defoamers operate through a combination of hydrophobic particle action and interface destabilization:
- Activation upon water addition – Powder disperses and migrates to air-liquid interfaces.
- Foam film rupture – Hydrophobic particles destabilize bubble lamellae.
- Bubble collapse and air release – Efficient removal of entrained air improves mortar density and surface finish.
This mechanism ensures that air is controlled without negatively impacting flow, workability, or mechanical performance.
Technical schematic for visualization can be included here (optional infographic).
Product Grades & Technical Specifications
| Property | DF100 | DF200 | DF300 |
|---|---|---|---|
| Appearance | White powder | White powder | White powder |
| Active Content | ≥75% | ≥85% | ≥95% |
| Recommended Dosage | 0.10–0.30% | 0.10–0.30% | 0.05–0.20% |
| Moisture Content | ≤5.0% | ≤5.0% | ≤5.0% |
Grade Positioning
- DF100 – Economic Grade: Suitable for wall putty, skim coat, and masonry mortars; cost-effective, moderate foam control.
- DF200 – Standard Grade: Ideal for tile adhesive, repair mortar, and waterproof mortar; balances foam control, surface quality, and cost.
- DF300 – Premium Grade: Designed for self-leveling mortars, gypsum-based systems, and high-performance tile adhesives; ultra-low air, superior surface finish, and full compatibility with advanced additives.
Recommended Applications
Tile Adhesives
- Eliminates surface pinholes caused by entrained air
- Improves adhesion and open time
- Ensures consistent density and smooth finish
Wall Putty & Skim Coat
- Reduces porosity and surface defects
- Improves density and strength of finished coat
- Enhances spreadability
Self-Leveling Mortars
- Prevents surface craters and bubbles
- Improves flow and leveling
- Maintains uniform thickness and smoothness
Gypsum-Based Systems
- Controls air content in plaster and putty
- Reduces surface marks and improves hardness
- Compatible with retarders and other gypsum additives
Compatibility With Other Additives
INNODEFOAM Powder Defoamers are compatible with common dry mix additives:
- Cellulose Ether: HPMC, HEMC
- Redispersible Polymer Powder (RDP): VAE, VA/VeoVa
- PCE Powder: Superplasticizers for enhanced flow
- Starch Ether
- Gypsum Retarder
Typical Dosage Recommendations
| Application | Dosage (by weight of dry mix) |
|---|---|
| Tile Adhesive | 0.1–0.3% |
| Wall Putty | 0.1–0.2% |
| Self-Leveling Mortar | 0.05–0.2% |
| Gypsum Plaster | 0.05–0.15% |
Storage & Handling
- Store in a dry, ventilated area
- Recommended temperature: ≤35°C
- Shelf life: DF100 – 12 months, DF200 – 18 months, DF300 – 24 months
- Keep containers tightly sealed to avoid moisture absorption
FAQ
Q1: Can powder defoamer be used with HPMC or RDP?
A1: Yes, all INNODEFOAM grades are compatible with standard cellulose ethers and RDP powders.
Q2: Will powder defoamer affect mortar strength?
A2: When used within recommended dosage, the impact on compressive strength is negligible.
Q3: What is the difference between DF100, DF200, and DF300?
A3: DF100 is economical with moderate performance; DF200 is standard with balanced performance; DF300 is premium with ultra-low air content and superior surface finish.
Q4: How should powder defoamer be added to formulations?
A4: Directly incorporate into the dry mix; activate upon water addition during mixing.
Q5: Can overdosing cause performance issues?
A5: Excessive addition may slightly reduce flow or surface smoothness; always follow recommended dosage ranges.
Why Choose InnoNew Powder Defoamer?
- High-performance foam control for diverse dry mix applications
- Professional formulation support for tile adhesives, wall putty, self-leveling mortar, and gypsum systems
- Stable, free-flowing powder with long shelf life
- Global supply experience and technical assistance for OEM and bulk production
