Anjeka-5055: A silicone-free universal defoaming agent for adhesives and composite materials

In the production and application of adhesives, sealants, and composites, air bubbles are the “invisible killers" that compromise product appearance, mechanical properties, and reliability. Especially in fields demanding high transparency, excellent intercoat adhesion, or flawless aesthetics, traditional silicone-containing defoamers can pose compatibility risks. How can we efficiently solve deaeration challenges without introducing new problems? Anjeka Technology's Anjeka-5055, a silicone-free polymeric deaerator, offers a superior choice for engineers with its clean formulation and exceptional versatility.

In high-end adhesives (e.g., electronic potting compounds, optical adhesives), high-performance sealants, and composites like FRP and CFRP, formulation engineers often face a dilemma: using potent silicone defoamers may cause craters, affect recoatability, or reduce clarity; while ordinary non-silicone defoamers might lack persistent foam suppression or system compatibility. This is particularly sensitive in reactive systems like unsaturated polyester resins (UPR).

Anjeka-5055 is designed to address these pain points directly. Its core advantages are:

• Pure & Silicone-Free: Employs a polymeric defoaming mechanism without silicones, fundamentally avoiding surface defects (e.g., craters, fisheyes) caused by silicone migration and potential interference with subsequent processes (e.g., spraying, lamination).
• Broad Compatibility: Optimized for unsaturated polyester resins, solvent-based, and solvent-free systems. It also shows good application potential in various resin matrices for adhesives and sealants, including epoxy, polyurethane, and acrylic.
• Eco-Friendly: The product is VOC-free, aligning with increasingly stringent global environmental regulations and green manufacturing trends, helping customers create more sustainable products.

1. Composite Molding (e.g., Pultrusion, Hand Lay-up, RTM): In UPR or vinyl ester resins, Anjeka-5055 effectively eliminates air entrapment during filler mixing and fiber wet-out, enhancing part density, surface finish, and mechanical strength. It is especially suitable for transparent or structural components requiring “zero tolerance" for bubbles.
2. High-Performance Adhesives & Sealants: For one/two-component epoxy adhesives, PU sealants, etc., this product effectively suppresses bubbles generated during mixing and production and facilitates bubble escape during curing, ensuring uniform, defect-free adhesive layers to meet stringent standards for electrical insulation, aging resistance, and appearance.
3. Applications Sensitive to Clarity: In casting resins, coatings, or films requiring high transparency, Anjeka-5055, due to its non-silicone nature, typically offers better compatibility, reducing haze or cloudiness caused by additives.

• Dosage: The recommended starting dosage is 0.3% to 1.0% based on total formulation weight. The optimal amount should be determined through testing according to system viscosity, filler content, and process conditions.
• Incorporation: Offers high flexibility. It is recommended to add it early in the production process when mixing with the resin matrix to ensure homogeneous dispersion. It can also be used as a post-additive in systems where bubbles have already formed, provided sufficient agitation is applied.
• Combination Advice: For extremely stubborn microfoam or dynamic foam scenarios, consider combining it with other Anjeka foam-suppressing additives (e.g., 7414) for more comprehensive bubble control.

Bubble management is a key step in enhancing the quality of adhesives and composites. Choosing an efficient deaerator without side effects is crucial. If you are seeking solutions for bubble issues in unsaturated polyester, epoxy, or polyurethane systems, or wish to evaluate the performance of Anjeka-5055 in your specific formulation, the Anjeka technical team is ready to support you.

• Request a Free Sample: Click here (link placeholder) or contact customer service to obtain an Anjeka-5055 sample for testing.
• Get Technical Data: Reply with “5055TDS" to receive the complete Product Data Sheet.
• Technical Consultation: Our application engineers are available for one-on-one technical selection and formulation optimization advice.