Defom 5500

Product Details

CasNo： 9006-65-9

Appearance： liquid

Delivery Time： 15 days

Packing： 25kg/drum

Purity： 99%

1. Basic Information

• Brand & Model: Defom 5500
• Core Ingredient: Polysiloxane serves as the main active substance, combined with specific additives to enhance defoaming and foam-inhibiting properties. Polysiloxane has a unique molecular structure, which can effectively reduce the surface tension of liquids, thereby achieving defoaming function.
• Appearance & Character: Usually appears as a colorless to light yellow transparent liquid with good fluidity and no visible impurities to the naked eye, making it easy to add and disperse in various systems.
• Packaging Specification: 25 kg/blue iron drum. The sturdy iron drum packaging can effectively protect the product from external factors during transportation and storage, preventing product leakage or deterioration.
• Physical Parameters:
  • Density: Approximately 0.9 - 1.1 g/cm³ (at 25℃), similar to the density of most oily systems, which is conducive to uniform dispersion in the system.
  • Flash Point: ≥100℃, it is a flammable liquid and should be kept away from open flames and high-temperature sources during storage and use.
  • Viscosity: 100 - 300 mPa·s (at 25℃). The moderate viscosity makes the product easy to handle during stirring and addition, and will not affect the use effect due to too high or too low viscosity.

2. Product Features

• Excellent Defoaming Performance: For solvent-based and solvent-free reactive curing coating systems, it can quickly eliminate bubbles in the system. In polyurethane thick film coating, whether it is bubbles introduced by stirring in the early stage or carbon dioxide bubbles generated during the reaction process, it can be efficiently removed, ensuring a smooth and flat paint film surface without defects such as pinholes and bubbles.
• Outstanding System Adaptability: Especially suitable for low-viscosity and low-component reactive oily systems, it has good compatibility with various resins, solvents and other components in oily systems, and will not affect the curing reaction and final properties of the system, such as adhesion, hardness, gloss, etc.
• Long-lasting Foam Inhibition Ability: It can not only defoam quickly, but also inhibit the generation of new bubbles for a long time. During the drying and curing process after coating construction, it continues to play a role in maintaining the low-foam state of the system and ensuring the stable quality of the final product.
• High Efficiency with Low Addition Amount: Only a small amount (generally 0.05% - 0.3% based on the total formula) needs to be added to achieve the ideal defoaming and foam-inhibiting effect, which can effectively reduce the use cost and at the same time reduce the potential impact on the system performance.

3. Application Fields

• Polyurethane Coating Field: In the production and construction of two-component polyurethane coatings, it can effectively eliminate carbon dioxide bubbles generated by the curing reaction, ensure the compactness and aesthetics of the coating, and is widely used in original car paint, car refinish paint, wood furniture paint, etc., to improve the quality and durability of the coating.
• Industrial Protective Coating Field: For solvent-based and solvent-free industrial protective coatings, such as steel structure anti-corrosion paint, ship paint, etc., it can quickly remove bubbles during thick film coating, enhance the adhesion of the coating to the substrate, improve the protective performance, and extend the service life of the protected object.
• Other Oily Coating Systems: It can also play a good defoaming role in low-viscosity and low-component reactive oily inks, adhesives and other systems, ensuring the stability and reliability of products during production and use.

4. Usage Methods & Recommended Dosage

• Recommended Dosage: Generally, 0.05% - 0.3% based on the total formula. The specific dosage needs to be adjusted according to factors such as the foaming degree, viscosity and reaction activity of the system. For systems with serious foaming, the dosage can be appropriately increased, but it should not exceed 0.5%. It is recommended to determine the optimal addition amount through small-scale tests.
• Addition Methods:
  • Direct Addition Method: Under the stirring state of the system, slowly and evenly add Defom 5500 into the system, and continue stirring for 5 - 10 minutes to ensure that the defoamer is fully dispersed. This method is suitable for most conventional systems.
  • Pre-dilution Method: If the system viscosity is high, the defoamer can be pre-diluted with the solvent in the system (the dilution ratio is generally 1:5 - 1:10) first, and then added to the system. This can improve the dispersion effect of the defoamer and avoid local agglomeration.

5. Storage & Safety

• Storage Conditions: Should be stored in a cool, dry and well-ventilated warehouse, avoiding direct sunlight and high-temperature environments. The recommended storage temperature is 5 - 35℃. The shelf life of unopened products is generally 12 - 18 months. After opening, it should be used as soon as possible. If it is not used up at one time, it should be sealed and stored to prevent product volatilization or deterioration.
• Safety Precautions:
  • Protective gloves, goggles and masks should be worn during operation to avoid skin contact and inhalation. If it accidentally contacts the skin, it should be rinsed with plenty of water immediately; if it splashes into the eyes, it should be rinsed with plenty of water immediately and seek medical attention in time.
  • This product is a flammable liquid. Fireworks are strictly prohibited in storage and use places, and corresponding fire-fighting equipment, such as dry powder fire extinguishers, should be equipped.
  • Avoid mixed storage and transportation with strong oxidants, strong acids, strong alkalis and other substances to prevent chemical reactions.