Product Name: Defoamer (Silicon - free polymeric air release agent)
Brand Model: BYK - A515
Packaging Specification: 20 kg/blue iron drum, suitable for the conventional dosage of small and medium - sized enterprises and laboratories, easy to store and handle, while reducing the single investment cost of large - scale procurement.
Core Component: Non - silicon polymer, free of silicon elements, avoiding surface defects (such as craters) and interlayer adhesion problems that may be caused by traditional silicon - containing defoamers, especially suitable for silicon - sensitive systems.
Product Performance and Advantages
Efficient Degassing and Fiber Wetting: As a silicon - free polymeric air release agent, it can quickly eliminate bubbles in solvent - based and solvent - free epoxy resins, UV/EB curing systems, PUR (polyurethane) systems and adhesives, and significantly improve the wettability of fiber substrates. For example, when making FRP products with vinyl ester resin, it can accelerate the infiltration of fibers and resin, reduce bubble residue, and improve the strength and surface flatness of the products.
Wide System Applicability:
Resin systems: Suitable for solvent - based and solvent - free epoxy resins (such as anti - corrosion coatings, floor paints), UV/EB curing systems (such as UV wood lacquers, inks), PUR systems (polyurethane elastomers).
Special scenarios: Especially suitable for highly filled mastic coatings (such as thick - paste anti - corrosion coatings) and alkyd resins (paste systems). It can still effectively degas in environments with high viscosity and high filler content to prevent pinholes or hollowing after coating curing.
Does Not Affect System Performance: After addition, it does not affect the key properties of the resin such as curing speed, hardness and gloss, and has good compatibility with other additives (such as curing agents, pigments) in the system. When used in UV - curable inks, it will not reduce the transparency of the ink or the scratch resistance after curing.
Environmental Protection and Process Adaptability: Suitable for solvent - free and low - VOC systems, in line with environmental regulations; In terms of construction technology, it can be directly added to the system without additional equipment or complex operations, reducing production complexity.
Scope of Application and Scenarios
Main Application Fields:
Coating industry: Epoxy resin anti - corrosion coatings, UV - curable wood lacquers, high - solid alkyd coatings, thick - paste mastic coatings (such as sewage treatment tank linings).
Wind turbine blade manufacturing: In the composite process of epoxy resin and glass fiber, BYK - A515 can accelerate the infiltration of resin into fibers, eliminate bubbles, and improve the mechanical properties and weather resistance of the blades.
Thick - paste anti - corrosion coating: In the anti - corrosion construction of marine engineering or chemical storage tanks, highly filled mastic coatings are prone to coating failure due to bubbles. Adding this air release agent can ensure the compactness of the coating and extend the anti - corrosion cycle.
Usage and Storage Recommendations
Adding Method:
The recommended dosage is 0.1% - 0.5% of the total formula, which needs to be adjusted according to the system viscosity, filler content and the severity of bubbles.
It can be added directly during the resin mixing stage, or added after dilution with a solvent, and the stirring time should be no less than 15 minutes to ensure uniform dispersion.
Compatibility Test: A small test is required for the first use to verify its compatibility with specific resins, curing agents and pigments, and observe whether there are phenomena such as turbidity, delamination or curing delay.
Storage Conditions:
Store in a cool and dry place, control the temperature at 5 - 35℃, and avoid direct sunlight or freezing.
After opening, it needs to be sealed and stored to prevent moisture absorption or contamination. The shelf life of unopened products is 12 months.
