5.9.6 Priming of fibre reinforced plastics (FRPs)
Objective:
The primer primarily promotes adhesion between the substrate surface and the adhesive, namely it acts as an adapter between the surface and adhesive.
Suitability:
Priming is in principle suitable for fibre reinforced plastics. It must be ensured that the primer is suitable for both the substrate and the adhesive.
Procedure:
- The substrate surfaces must always be thoroughly cleaned and degreased; if necessary other surface treatment processes must be carried out
 - Apply the primer evenly in a thin layer using a sponge, following the instructions of the manufacturer (thick layers weaken the adhesive bond)
 - It must be ensured that the primer is suitable for both the substrate material/surface and the adhesive
 - Heed the airing time (evaporation time); then apply the adhesive within the open time
 
Points to heed:
- The substrate surfaces must always be thoroughly cleaned and degreased and if necessary other surface treatment processes must be carried out
 - Mix the primer before use
 - Apply a thin, even layer
 - Heed the airing time
 - Heed the open time
 - Close the container immediately after removing primer
 - Note the date of opening on the container
 - Primers must be used within a limited time after the first opening of the container
 
											
				
			
					
