Message:

<p>[QUOTE=&quot;Kentucky, post: 4889252, member: 33176&quot;]Concerning PVC &quot;contamination&quot;.&nbsp; From a chemical viewpoint I don&#039;t quite understand it.&nbsp; PVC is a rigid glass-like polymer when not plasticized.&nbsp; The addition of some oily chemicals (usually dioctylphthalate or DOP) disrupts the crystalline character and makes the chains &quot;float&quot; over each other and for the plastic to become flexible.&nbsp; Now DOP isn&#039;t such a bad actor, it shouldn&#039;t cause any deterioration of a metal surface by itself, so what causes the damage?&nbsp; It does leave a sticky film on the surface which could act as a solvent to let other chemicals dissolve and act on the surface.&nbsp; As to the PVC itself, over time it can decompose giving off HCl gas which would definitely hurt most metal surfaces.&nbsp; Any thoughts on this?&nbsp; I respect experience which says the flips do harm, I&#039;m just wondering about the mechanism that leads to the harm.[/QUOTE]</p><p><br /></p>

Your name or email address:

Do you already have an account?

• No, create an account now.
• Yes, my password is:
• Forgot your password?

Stay logged in