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?
togwt
02-13-2005, 01:37 PM
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