Adhesion

There are many conditions that can affect the adhesion of rubber to various substrates such as metal and fabrics. Commonly evaluated in tires, adhesion is also used as a common property in a wide range of other rubber products.

Adhesion testing is a critical aspect of multi-component rubber products, and frequently should be considered for both rubber to rubber interfaces and rubber to reinforcement interfaces.

Several methods can determine the force required to separate rubber from a material:

  • Shear testing of reinforcements to rubber adhesion
    • Steel cord
    • Bead wire
    • Textiles: nylon, polyester, rayon and polyaramids
  • Quadruple shear method for adhesion to rigid plates
  • Fracture tear / peel force adhesion testing of rubber-rubber interfaces
  • Fracture tear / peel force adhesion testing of rubber-to-rigid surfaces
  • Roller peel adhesion testing
  • Strebler tear adhesion testing
  • 90° peel for adhesion to metal
  • Two plate method for adhesion to textile fabrics 

We have six universal testing machines which cover a calibrated load range of 1N upto 250kN. Our testing machines are supported by an extensive range of sample grip combinations.

Sample Preparation

The presence of our extensive samples preparation facilities which include the thickness reduction of rubbers by slitting/buffing and a CNC machine and our on-site moulding function ensure we are able to test a huge variety of materials and product forms. 

Environmental Capability

The addition of environmental chambers to our machines enable us to test over the temperature range of -50°C upto 200°C.

Common Test Protocols

ASTM D413

Adhesion to Flexible Substrates Testing - This test method measures the force required to separate a flexible material (fabric, fiber, etc.) from a rubber layer.

BS ISO 813

Adhesion to a rigid substrate - 90° peel (vulcanised rubber or thermoplastic).

BS ISO 814

Adhesion to metal – two plate method (vulcanised rubber or thermoplastic).

BS ISO 36

Adhesion to textile fabrics (vulcanised rubber or thermoplastic).

BS ISO 1827

Shear modulus and adhesion to rigid plates – quadruple shear method.

Accreditation