Protection, Protectants, and Tire Dry Rot

Tire Dry Rot example

 

There are two main degrading agents that attack tires, plastic and vinyl: ultraviolet (UV) light and ozone. Both attack the long hydrocarbon chains of the rubber, trim, and vinyl skin by breaking these bonds, shortening the molecules with a resulting loss of elasticity and other properties.

Example tire, plastic, dry rot prevention, tire dry rot protectant

Tire manufacturers add two primary sacrificial protectants to rubber. To protect against UV, manufacturers add carbon black (the reason tires and trim are almost always black). The carbon black will turn white or gray as it absorbs the UV and protects the rubber. To protect against ozone, tire manufacturers add a wax-based sacrificial protectant. The ozone attacks the wax and gradually depletes it. As the tire rolls, additional wax is forced to the surface of the tire. This oxidized wax will appear brown on the tire surface. This ‘blooming’ slowly refreshes the surface wax protectant. A tire that has not been flexed will have the wax depleted by the ozone and will begin to degrade, crack, and rot.
Silicone and oil, which are the main ingredients in most commonly advertised protectants, actually dissolve the wax and cause premature tire sidewall cracking and failure. Nationally advertised protectants, both silicone and oil-based, also contain formaldehyde and/or other harsh petroleum surfactants. Some tire manufacturers may not honor their warranties if they detect the use of such protectant products.
Vinyl surfaces have a protective skin that is depleted by off-gassing. Silicone and oil-based protectants may also dissolve the essential oils in the skin, hastening the premature formation of cracks in the vinyl. Silicone also attracts dirt and dust particles. A quality protectant should contain a strong UV-blocking compound to bolster the efforts of the carbon black and should not contain surfactants that remain active after applied.
RENEW-PRO supplies essential co-polymer elements that restore the original composition of the surface. RENEW-PRO also creates a dry-seal ozone and UV block via zinc and titanium oxides. This technology also serves to retard the 'blooming' and 'off-gassing' processes and greatly enhances the retention of protective elements within the surface. RENEW-PRO BLAK also contains carbon black and is ideal for the restoration of faded black surfaces. RENEW-PRO products are always silicone and oil-free.
 
Dorus Rudisill
Product Development
RENEW-PRO Manufacturing, LLC
February 17, 2021 — Dorus Rudisill