CTBN Carboxyl-Terminated Butadiene Nitrile Liquid Rubber Polymer Carboxyl-Terminated Butadiene Acrylonitrile

CTBN Carboxyl-Terminated Butadiene Nitrile Liquid Rubber Polymer Carboxyl-Terminated Butadiene Acrylonitrile

CTBN (Carboxyl-Terminated Butadiene Nitrile) Description

CTBN (Carboxyl-Terminated Butadiene Nitrile) is a liquid rubber polymer derived from butadiene and acrylonitrile with carboxylic acid functional groups at the chain ends. It is primarily used as a reactive modifier for epoxy, polyurethane, and other thermosetting resins to enhance toughness, flexibility, and impact resistance. CTBN is valued for its ability to improve mechanical and thermal properties without significantly compromising the adhesive strength or chemical resistance of the base polymer.

Technical Data Table

Features

1. Toughness Enhancer: Improves the toughness and impact resistance of epoxy and other resins.
2. Flexibility: Provides flexibility to otherwise brittle materials.
3. Adhesion Improvement: Enhances adhesive strength, especially in high-stress environments.
4. Chemical Resistance: Contributes to chemical and solvent resistance in cured systems.
5. Thermal Stability: Stable under a wide range of curing and operating conditions.
6. Customizable Properties: Available in various grades with differing acrylonitrile content and molecular weights to meet specific application needs.
7. Low Glass Transition Temperature (Tg): Contributes to flexibility and low-temperature performance.

Applications

1. Epoxy Resin Toughening:

   • Used in adhesives, coatings, and composites to enhance impact resistance and flexibility.
   • Commonly applied in structural adhesives for aerospace, automotive, and construction industries.

2. Polyurethane Modification:

   • Improves elasticity and toughness in polyurethane formulations for industrial and consumer applications.

3. Sealants and Elastomers:

   • Improves the mechanical properties and durability of sealants and elastomeric materials.

4. Composite Materials:

   • Enhances the toughness and durability of fiber-reinforced composites used in high-performance applications.

5. Adhesives:

   • Provides improved adhesion and resistance to thermal cycling and environmental stresses.

6. Coatings:

   • Used in protective and decorative coatings to improve crack resistance, durability, and flexibility.

7. Electronics:

   • Applied in potting compounds and encapsulants for electronic devices to enhance mechanical and thermal resistance.