Packaging Specification: 25 kg/blue iron drum. This specification caters to the conventional production volume of small and medium - sized enterprises and laboratory debugging needs. The moderate weight of a single drum facilitates handling, storage, and precise control of the single addition amount, reducing performance loss caused by long - term storage after opening.
Core Component: Non - silicone components, free of organic silicon. This fundamentally avoids problems such as surface craters and reduced interlayer adhesion that may be caused by traditional silicon - containing additives, especially suitable for systems sensitive to silicon elements or with transparency requirements.
Product Performance and Advantages
Efficient Degassing, Ensuring System Cleanliness: For solvent - based and solvent - free unsaturated polyester (UP) systems and adhesives, it can quickly capture and discharge tiny bubbles in the system (such as air entrained by stirring and gas generated by curing reaction). For example, when making transparent handicrafts from solvent - free unsaturated polyester resin, it can effectively eliminate bubbles inside the resin, avoiding "haze" or pinholes in the finished product and ensuring the transparency of the product.
Excellent Adaptability to Transparency: When added to unsaturated polyester transparent systems (such as transparent resin boards and crystal glue handicrafts), it will not cause problems such as turbidity and increased haze, and can retain the original transparency of the system to the greatest extent. Compared with some non - silicone deaerators that may cause slight turbidity, BYK - A550 has very low impact on transparency and is the preferred additive for the production of transparent products.
Good System Compatibility: It has excellent compatibility with unsaturated polyester resins (including common types such as ortho - phthalic and meta - phthalic) and various adhesive substrates (such as epoxy - modified adhesives and polyurethane adhesives). After addition, it does not affect the curing speed, hardness, yellowing resistance of the resin and the bonding strength of the adhesive, and avoids problems such as system delamination and abnormal curing.
Strong Process Adaptability: Whether it is the casting molding of unsaturated polyester resin (such as making resin ornaments), hand - lay - up molding (such as small FRP products), or the coating and packaging process of adhesives, BYK - A550 can stably play the role of degassing without adjusting the existing production process, reducing the cost of process adaptation.
Scope of Application and Scenarios
Main Application Fields:
Unsaturated Polyester (UP) Systems: Solvent - based/solvent - free unsaturated polyester resins, including transparent resin boards, crystal glue handicrafts, unsaturated polyester adhesives, and FRP products (types with high requirements for transparency or surface quality);
Adhesive Industry: Various adhesives that need degassing and are sensitive to silicon, such as unsaturated polyester - based adhesives and epoxy - polyester composite adhesives;
Casting Industry: Transparent unsaturated polyester resin casting products (such as resin molds and decorative ornaments).
Typical Application Scenarios:
Production of Transparent Resin Handicrafts: When making crystal drop glue and resin embedded specimen handicrafts, adding BYK - A550 can eliminate bubbles during the resin curing process, ensuring that the finished product is transparent and free of defects, and improving the visual texture;
Encapsulation of Unsaturated Polyester Adhesives: When used for the encapsulation of electronic components with unsaturated polyester adhesives, it can discharge bubbles in the glue, avoiding the decrease in insulation performance or poor heat dissipation caused by bubbles, and ensuring the stability of electronic components;
Transparent FRP Products: When producing transparent FRP daylighting panels and transparent protective covers, it can reduce bubbles during the composite process of resin and glass fiber, taking into account the transparency and mechanical strength of the products.
Usage and Storage Recommendations
Adding Method:
The recommended addition amount is 0.1% - 0.5% of the total formula, which needs to be adjusted according to the system viscosity, bubble content and transparency requirements (for transparent systems, it is recommended to start small tests from 0.1% and optimize step by step);
It can be added directly during the raw material mixing stage of resin or adhesive, and the stirring time is recommended to be no less than 10 - 15 minutes to ensure uniform dispersion of the additive; if the system viscosity is high, it can be diluted with a small amount of corresponding diluent (such as a special diluent for unsaturated polyester resin) before adding to avoid excessive local concentration.
Compatibility Test: When using for the first time or changing the resin brand and adhesive formula, a small - scale compatibility test is required to observe whether the system has phenomena such as turbidity, delamination, and curing delay. At the same time, key indicators such as transparency and hardness of the finished product are tested to confirm the adaptability before batch application.
Storage Conditions:
It needs to be stored in a cool, dry and ventilated environment, avoiding direct sunlight, and the storage temperature should be controlled at 5 - 35°C to prevent the additive from deteriorating due to high temperature or precipitating at low temperature;
The product should be sealed immediately after opening to avoid moisture, pollution or solvent volatilization. The shelf life of unopened products is usually 12 months. After expiration, the degassing performance and the impact on transparency need to be retested, and it can be used only after passing the test.
