The VW PV 3976 standard developed by Volkswagen automobile company describes a test method for determining and evaluating the corrosion effect of elastomer materials on electrolyte copper.
Thermoplastic polymers, thermoset polymers and elastomeric materials are materials with abrasive effects. Polymers and elastomer materials show the effects of chemical corrosion caused by changes in temperature, humidity and other corrosive substances. Each material has chemical resistance and typical applications as well as the ability to withstand the sun, weathering and ozone.
Polymers consist of a network with molecular chains mainly composed of carbon, hydrogen and oxygen. Corrosion by chemical reaction changes the configuration of polymer chains. For example, chain scission occurs when polymers are exposed to heat above a certain temperature limit that is unique to each polymer type. In the presence of oxygen, ultraviolet radiation causes degradation of polymer chains. Ozone attack on unsaturated polymers under stress, such as natural rubber, causes characteristic cracks. Absorption of water at high temperatures causes hydrolysis of certain groups in a polymer chain. Hydrolysis weakens the polymer. It is also important to distinguish the degradation caused by chemicals from the effects caused by swelling and dissolution, which do not change the chemical structure of the polymer chains.
The physical effects on polymers are caused by interaction with the environment. This can cause the additives to swell, dissolve or leak. The interaction depends on the diffusion of substances into the polymer and the process is reversible in some cases. Organic substances usually affect polymers through physical interaction, while substances such as strong acids or bases normally cause irreversible degradation of polymers.
VW PV 3976 standard has an important place among vehicle interior material testing methods. Safety and quality come first among the demands for modern materials used in the automotive industry. Continuous improvements are made to products and components, and these require constant control during the development of parts and system components, from raw materials to the final product.
Among the numerous tests, measurements, analyses, and evaluations our organization provides for businesses in various sectors, we also offer testing services under the VW PV 3976 standard for determining and evaluating the corrosion effects of elastomers on electrolyte copper, utilizing a trained and expert staff and advanced technological equipment.
To get an appointment, to get more detailed information or to request an evaluation, you can ask us to fill in our form and reach you.
