A2279 ： Rapid-curing adhesive

A2279 is an aliphatic polyurethane acrylate resin that stands out in the market due to its unique combination of properties. With its colorless and transparent appearance, low odor, and well - balanced performance characteristics, it offers a wide range of applications in various industries.

Key Features and Benefits

Appearance and Curing Characteristics

• ​​Colorless and Transparent​​: A2279 presents as a colorless and transparent liquid, which is highly advantageous in applications where clarity is crucial. This property ensures that the final coated or bonded products maintain their original appearance, without any unwanted coloration that could affect their aesthetic appeal.
• ​​Low Odor​​: The low - odor characteristic of A2279 makes it suitable for use in environments where a pleasant working atmosphere is required, such as in consumer product manufacturing or indoor applications. It also reduces the potential for odor - related complaints from end - users.
• ​​Optimized Curing Speed​​: With a curing speed at 2000mj/cm², A2279 strikes a perfect balance between production efficiency and process adaptability. It allows for relatively fast curing, reducing production cycle times, while still being compatible with various manufacturing processes and equipment.

Hardness and Flexibility

• ​​Synergistic Hardness and Flexibility​​: The combination of a Shore hardness of 10D and a dry - film pencil hardness of 6B in A2279 is a remarkable feat. The relatively high Shore hardness provides the necessary rigidity and support for the coated or bonded products, ensuring their structural integrity. At the same time, the 6B pencil hardness indicates excellent flexibility, allowing the material to withstand bending and deformation without cracking. This is demonstrated by its ability to endure ten consecutive folds without breaking, making it suitable for applications where dynamic movement or bending is involved.

Mechanical Properties

• ​​High Elasticity - High Strength Balance​​: A2279 boasts a high elongation at break of 510% combined with a tensile strength of 11.2MPa. This combination creates a balanced system that offers both high elasticity and high strength. The high elongation at break allows the material to stretch significantly under stress, absorbing energy and preventing sudden failure. The high tensile strength, on the other hand, ensures that the material can withstand significant pulling forces without breaking, making it suitable for applications where mechanical stress is a concern.

Yellowing Resistance

• ​​Superior Anti - yellowing Ability​​: A2279 exhibits excellent resistance to yellowing. After undergoing 800mj/cm³ and 8000mj/cm³ of ultraviolet aging tests, the yellowness index only increased to 1.60 and 5.85 respectively. This is significantly better than similar products on the market, ensuring that the coated or bonded products maintain their original color and appearance over an extended period, even under harsh environmental conditions.

Adhesion Performance

• ​​Outstanding Adhesion​​: A2279 shows particularly excellent adhesion properties. It achieves a 5B level of adhesion strength on common substrates such as glass and PC. This high - level adhesion indicates that it can form strong and reliable bonds with a wide range of materials, demonstrating its versatility in cross - material bonding. Whether it is for bonding different types of plastics, metals, or glass, A2279 can provide a secure and long - lasting connection.