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III

97 bonneville/98 Z71
I have a question regarding bonding issues. Why does this happen? We all know that it's ok to top a sealant with a carnauba, but it's not wise to it vice versa. I don't understand this. If both products eventually end up on the paint, why does it matter which one goes on first?
 
Adherence:

Carnauba wax, polymer sealants and synthetic waxes initially adhere by surface tension; the balance of the adherence process is that it works its way via the carrier system (solvent and / or oils) into the microscopic gaps and valleys of the paint film surface thereby creating an anchor.



Polymer sealants initially adhere by surface tension and then after a cross-linking period (the solvents in the carrier system vaporize (outgas) after which the polymers form a molecular bond to the paint. This process usually requires 12-24 hours, which is time and temp/humidity dependent.



Carnauba wax will bond to a cross-linked polymer (cross-linking means that the polymer and paint molecules form a bond (hence the term â€Ëœmolecular bondâ€â„¢),conversely if a polymer is applied on top of a Carnauba wax it will not bond due to the waxes oil content

JonM
 
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