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Göran Spetz, manager and owner of Elastocon AB, talks to AZoM about the degradation of rubber materials and the need for artificial ageing of rubber within industry.
To optimize the life time of products and materials is getting more and more important for the industry, especially the automotive industry.
You have to determine the environment where the material and product is going to be used. Such as temperatures, humidity, mechanical stresses etc to be able to make a test for determination of the life time.
The most important factors are temperature and oxidation of the material, some materials are also sensitive for hydrolysis in contact with water or steam.
The way that rubber degrades is a chief consideration in many different industries, including the automotive industry. Image credit: photos.com.
The most important factor is the temperature, as one °C difference is equal to about 10 % of the testing time.
In the rubber we have three main reactions going on during use, oxidation if in contact with air, thermal ageing depending on temperature and continued cross-linking in the beginning of the use, if the material was not properly cured.
In the cell ovens different materials are separated by having its own cell to avoid cross contaminations between different materials. He same is valid for Test tube ovens but here you do not know the air exchange rate which shall be 3 to 10 times an hour and is controlled in a cell oven. The cabinet ovens have the accuracy as the cell ovens, but a larger space for samples.
Cabinet ageing oven EB 04-II for rubber and plastic materials from Elastocon AB. Image credit: Elastocon.
Cell ovens are best used for ageing of test pieces for material testing, test tube ovens are best for testing ageing in liquids and the cabinet ovens for testing products or if you have many test pieces of similar materials.
Göran is Manager and owner of Elastocon AB. Elastocon manufactures and sells testing instruments for rubber and plastic materials. Elastocon offer instruments for existing test methods and also have the capability to develop instruments for new test methods. Elastocon's objective is to offer instruments with high precision, giving accurate results.
The range of instruments includes OEM developed instruments as well as instruments from several known instrument manufacturers. This makes it possible for Elastocon to offer a wide range of instruments and you only need one supplier.
More of Göran’s career highlights are provided below:
Disclaimer: The views expressed here are those of the interviewee and do not necessarily represent the views of AZoM.com Limited (T/A) AZoNetwork, the owner and operator of this website. This disclaimer forms part of the Terms and Conditions of use of this website.
Gary graduated from the University of Manchester with a first-class honours degree in Geochemistry and a Masters in Earth Sciences. After working in the Australian mining industry, Gary decided to hang up his geology boots and turn his hand to writing. When he isn't developing topical and informative content, Gary can usually be found playing his beloved guitar, or watching Aston Villa FC snatch defeat from the jaws of victory.
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when rubber specimens are kept in oven for after aging ,what are the effects on the specimen and its properties such as tensile strength, elongation and modulus,and which change in property is good
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