[togwt]

Tyres:

Are manufactured from a composite of rubber and polymer compounds, natural rubber or Polyisoprene is the basic elastomer used in tyre making. Styrene-butadiene co-polymer (SBR) is a synthetic rubber which is often substituted in part for natural rubber based on the comparative raw materials cost. Tyres are subjected to more abuse than any other component part of the vehicle.

As well as airborne contaminants they also have other formidable adversaries, ultra violet radiation (UVR) ozone, oxygen, petroleum distillates, formaldehyde and water. Are manufactured from a composite of rubber and polymer compounds and are subjected to more abuse than any other component part of the vehicle. As well as airborne contaminants they also have other formidable adversaries, ultra violet radiation (UVR) ozone, oxygen, petroleum distillates, formaldehyde and water.

a) To provide protection from ultra violet radiation (UVR) a sacrificial absorber (carbon black) is used to convert UV radiation into harmless light wave energy and dissipate it.

b) Oils, and antiozonants are added to provide flexibility, and form a protective barrier between the Ozone and oxygen (Ozone is an allotropic form of oxygen, an oxidizer (an oxidizer is any compound that spontaneously emits oxygen) either at room temperature or under slight heating.

c) As the tire rolls, additional antiozonant is forced to the surface of the tyre; and is exposed to the ozone in the air, it turns brown (oxidation) the technical term for this effect is blooming. It can vary by brand, but blooming also occurs most in newer tires, and will get less and less as time goes on. A factor that exacerbates it is the use of harsh cleaners that remove the outer layer and promote more antiozonant to permeate during flexing

If the tyres are parked for extended periods the micro-waxes and oils dry out, UV light radiation combined with air (Ozone and Oxygen= Oxidation) which accelerate the tyre degradation process, resulting in drying, discolouration and cracking.

To provide the necessary protection from the negative effects of UV radiation, water, oxidation and any airborne pollutants, a water-based tyre dressings containing antiozonant technology protect rubber compounds from cracking and deteriorating from exposure to ozone as well as providing resistance to oxygen and heat

d) Many chemical compounds react vigorously at ambient temperatures as the oxidizing process takes place between water and the tyre polymer-binding agents. Water tends to wash away the natural oils and micro-waxes that help to maintain the tyres flexibility.
(See also Vinyl and Rubber Dressing)

© TOGWT ™ Ltd Copyright 2002-2008, all rights reserved