5.2.1.2 Substrate Properties and Joint Performance

5.2.1.2 Substrate Properties and Joint Performance

Following the performance of the adhesive, the second considerations that must be accounted for when designing and testing a joint are the specifications and properties of the substrates. Even the most well-designed adhesive assembly designed to accommodate all expected forces will fail if the substrate is not fit for the purpose.

The following properties are the most common factors to consider and they may individually or collectively determine whether the use of a particular adhesive will be successful in an application in the short and long term:

  • Flexibility
  • Hardness
  • Thickness of a substrate
  • UV resistance
  • Moisture resistance
  • Thermal expansion/contraction
  • Thermal tolerance
  • Chemical resistance
  • Anisotropic/Isotropic
  • Impact resistance

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