TOGWT
03-11-2008, 10:25 AM
Tyres:
Are manufactured from a composite of rubber and polymer compounds such as rubber with reinforcing materials such as fabric and wire, natural rubber or Polyisoprene is the basic elastomeric 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, asphalt, road dirt and grime, and rain water.
Over time, rubber degrades. Vehicle manufacturers recommend that tires be replaced when they are six years old to prevent sudden failure, even if the tire looks undamaged. In tropical climates, tires degrade sooner than in temperate climates.
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 antiozonant and oils dry out, UV light radiation combined with air (Ozone and Oxygen= Oxidation) which accelerate the tyre degradation process, resulting in drying, discoloration 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, Good Silicone, Not so Good Silicone)
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© TOGWT ™ Ltd Copyright 2002-2008, all rights reserved
Are manufactured from a composite of rubber and polymer compounds such as rubber with reinforcing materials such as fabric and wire, natural rubber or Polyisoprene is the basic elastomeric 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, asphalt, road dirt and grime, and rain water.
Over time, rubber degrades. Vehicle manufacturers recommend that tires be replaced when they are six years old to prevent sudden failure, even if the tire looks undamaged. In tropical climates, tires degrade sooner than in temperate climates.
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 antiozonant and oils dry out, UV light radiation combined with air (Ozone and Oxygen= Oxidation) which accelerate the tyre degradation process, resulting in drying, discoloration 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, Good Silicone, Not so Good Silicone)
[/B]
© TOGWT ™ Ltd Copyright 2002-2008, all rights reserved