Defom 3150

Product Details

CasNo： 8042-47-5

Appearance： liquid

Delivery Time： 15 days

Packing： 25kg/drum

Purity： 99%

1. Basic Information

• Brand & Model: Defom 3150
• Core Ingredient: Non-silicone high-molecular polymer, a type of silicon-free macromolecular compound. Through specialized molecular structure design, it has low surface tension, enabling it to quickly penetrate bubble films, destroy their stability, and achieve defoaming and foam-inhibiting effects—while avoiding surface defects that may occur with silicone-based defoamers.
• Appearance & Character: Typically a colorless to light yellow transparent liquid with good fluidity, free from visible mechanical impurities to the naked eye. It disperses evenly easily in various solvent-based and solvent-free coating systems, without affecting the appearance performance of the final product.
• Packaging Specification: Common specifications are 25 kg/drum or 50 kg/drum (subject to actual supply). High-strength, corrosion-resistant packaging containers are used, featuring excellent sealing and impact resistance. They effectively prevent product leakage, volatilization, or contamination during transportation and storage, ensuring stable product performance.
• Physical Parameters:
  • Density: Approximately 0.98 - 1.05 g/cm³ (at 25℃), close to the density of most solvent-based and solvent-free coating systems. This facilitates uniform diffusion in the system, allowing it to fully exert its defoaming effect.
  • Flash Point: ≥65℃, classified as a non-flammable liquid, reducing safety risks during storage and use.
  • Viscosity: 100 - 500 mPa·s (at 25℃). The moderate viscosity facilitates metered addition and system mixing, ensuring rapid dispersion in target systems of different viscosities.

2. Product Features

• Efficient Defoaming and Foam-Inhibiting Ability: It can quickly eliminate bubbles generated during the production, mixing, and application of solvent-based or solvent-free coatings. At the same time, it forms a stable protective film on the system surface to persistently inhibit the formation of new bubbles, ensuring the coating remains stable during storage and application.
• Significant Non-Silicone Advantage: As a non-silicone defoamer, it avoids surface defects such as coating craters, fisheyes, and reduced gloss that may be caused by silicone-based products. It is particularly suitable for scenarios with high requirements for coating appearance, ensuring a smooth and flat coating surface.
• Application-Specific Advantages: It performs exceptionally well in unsaturated polyester primer systems, effectively solving bubble problems caused by chemical reactions during the curing process of such systems. It also has a good defoaming effect on bubbles formed during construction, ensuring the quality of the primer coating.
• Broad System Adaptability: It is not only suitable for unsaturated polyester systems but also has good compatibility with resins, solvents, pigments, and other components in solvent-based coatings and solvent-free coatings. It does not cause system turbidity, delamination, or affect the curing performance and mechanical properties of the coating.
• Good Temperature Resistance: It can adapt to temperature changes during the coating curing process and maintain stable defoaming performance even in relatively high-temperature environments. It will not fail due to temperature rise, ensuring the smooth progress of various baking or curing processes.

3. Application Fields

• Unsaturated Polyester Coating Field: Especially suitable for unsaturated polyester primer systems. It can effectively inhibit and eliminate bubbles generated during the production, construction, and curing of the primer, ensuring good adhesion between the primer and the substrate and providing a flat foundation for subsequent coatings.
• Solvent-Based Coating Field: Widely used in various solvent-based coatings, such as solvent-based wood coatings and solvent-based industrial protective coatings. It eliminates bubbles generated during the mixing, spraying, and brushing of the coating, avoiding defects such as pinholes and pitting on the coating.
• Solvent-Free Coating Field: It functions in systems such as solvent-free epoxy coatings and solvent-free polyurethane coatings. It solves the problem that solvent-free systems are difficult to discharge bubbles due to high viscosity, ensuring the coating has a smooth surface and stable performance after curing. It is suitable for scenarios such as pipeline anti-corrosion and floor coating.

4. Usage Methods & Recommended Dosage

• Recommended Dosage: Generally 0.1% - 0.8% based on the total mass of the formula. The specific dosage needs to be adjusted according to the type of coating system (e.g., unsaturated polyester, solvent-based, solvent-free), foaming degree, and construction process. For example, in unsaturated polyester primer systems with severe foaming, the dosage can be appropriately increased to 0.5% - 0.8%; in conventional solvent-based coatings, the dosage is usually 0.1% - 0.3%. It is recommended to determine the optimal dosage through small-scale tests.
• Addition Methods:
  • Direct Addition Method: During the dispersion or paint mixing stage of coating production, add Defom 3150 slowly and evenly to the system under stirring (stirring speed: 300 - 600 r/min), and continue stirring for 15 - 30 minutes to ensure the defoamer is fully dispersed.
  • Pre-Dilution Method: For high-viscosity systems (e.g., solvent-free coatings), the defoamer can first be pre-diluted with solvents or thinners in the system at a ratio of 1:5 - 1:10. After stirring evenly, add it to the target system and continue stirring for 20 - 30 minutes to improve dispersion efficiency.

5. Storage & Safety

• Storage Conditions: Should be stored in a cool, dry, and well-ventilated warehouse, avoiding direct sunlight and high-temperature environments. The storage temperature should be controlled at 5 - 40℃. Keep away from fire sources, heat sources, and strong oxidants. The shelf life of unopened products is usually 12 - 18 months; after opening, the product must be sealed and used as soon as possible. It is recommended to use it up within 3 months to prevent performance degradation.
• Safety Precautions:
  • Operators must wear protective gloves, goggles, and masks to avoid direct contact between the product and skin/eyes. In case of accidental skin contact, rinse immediately with plenty of water; if splashed into the eyes, rinse with water for at least 15 minutes and seek medical attention promptly.
  • The storage and use areas must maintain good ventilation. Open flames are strictly prohibited, and corresponding fire-fighting equipment must be equipped.
  • Handle with care during transportation to prevent packaging damage and subsequent product leakage. In case of leakage, treat the leaked material with adsorbents and dispose of it in accordance with environmental protection requirements.