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The material selection platform
Adhesives Ingredients
The material selection platform
Adhesives Ingredients

2K Elevated Temperature Cured Toughened Epoxy Adhesive (C)

Adhesives Formulation

Applicable Type

Applicable Base Polymer Properties

Epoxy adhesives are generally more resistant to a wide variety of liquid environments than other structural adhesives. However, they are generally considered to be very rigid systems, and as such they do not have exceptionally good impact or peel resistance unless modified with tougheners.

Hypox products are predominately reactants of CTBN with the base thermoset resin to gain product performance improvements. These resultant pre-reacts (adducts) can be incorporated at various levels to suit the needs of the specific formulation.

Typical Formulation Ingredients

Phase
Ingredient
Parts by weight
DGEBA liquid epoxy (EEW: 180-190) 
xxxx 
CTBN – DGEBA epoxy adduct (HyPox RA 1340, CVC Thermosets) 
xxxx 
Aliphatic amine adduct 
xxxx 
Polyamide 
xxxx 
Filller (tabular alumina) 
xx 

Typical Properties

Properties
Lap shear strength, psi: 
 
Cold roll steel 
xxxx 
Electrogalvanized steel 
xxxx 
T-peel strength, pli: 
 
Cold roll steel 
xxxx 
Electrogalvanized steel 
xxxx 

Processing

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Resulting Properties

It is a two-component epoxy adhesive formulation using CTBN toughening agent. Toughened epoxy adhesives are generally available as single component, elevated temperature curing systems that employ dicyandiamide as the curing agent.

It has:
• High tensile strength
• High temperature resistance
• High peel strength (does not decrease rapidly with lower temperature)

The durability of CTBN modified epoxies is satisfactory as measured by most long-term moisture tests.

A formulation by CVC Thermoset Specialties.

Tips and Tricks

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