ETBN Epoxy-terminated Butadiene Acrylonitrile Toughening Agent Epoxy-Terminated Butadiene Nitrile

ETBN Epoxy-terminated Butadiene Acrylonitrile Toughening Agent Epoxy-Terminated Butadiene Nitrile

ETBN (Epoxy-Terminated Butadiene Nitrile) Description

ETBN (Epoxy-Terminated Butadiene Nitrile) is a liquid rubber polymer derived from butadiene and acrylonitrile with epoxy functional groups at the chain ends. It is a reactive toughening agent, primarily used to enhance the performance of epoxy resins and other thermosetting polymers. The epoxy functional groups in ETBN provide excellent compatibility with epoxy and similar systems, allowing it to chemically bond and significantly improve toughness, flexibility, and impact resistance without reducing the system's thermal or chemical resistance.

Technical Data Table

Features

1. Reactive Toughening Agent: Epoxy groups react chemically with epoxy resins, forming strong covalent bonds.
2. Impact and Toughness Enhancement: Improves impact resistance and toughness of brittle epoxy systems.
3. Flexibility: Reduces the brittleness of cured epoxy systems, providing enhanced flexibility.
4. Thermal and Chemical Resistance: Maintains excellent thermal and chemical resistance in modified systems.
5. Low Glass Transition Temperature (Tg): Contributes to flexibility and performance at low temperatures.
6. Improved Adhesion: Enhances adhesive properties in structural adhesives and coatings.
7. Customizable Properties: Available in grades with varying acrylonitrile content and molecular weights.

Applications

1. Epoxy Resin Toughening:

   • Widely used in adhesives, coatings, and composites to improve flexibility and impact resistance.
   • Common in aerospace, automotive, and construction industries for structural adhesives.

2. Adhesives and Sealants:

   • Enhances the strength, toughness, and durability of adhesives and sealants in high-stress environments.

3. Composite Materials:

   • Provides improved toughness and resistance to delamination in fiber-reinforced composites used in high-performance applications.

4. Electronics:

   • Used in potting compounds and encapsulants for electronic devices to enhance resistance to thermal cycling and mechanical stress.

5. Protective Coatings:

   • Improves crack resistance, flexibility, and toughness in protective coatings used in industrial and marine applications.

6. Industrial Applications:

   • Applied in tooling, casting, and molding compounds to improve mechanical properties and durability.