VULKOLLAN®
Properties
- Excellent mechanical wear resistence
- High impact resilience, even with hard settings
- High tear resistence
- Low compression set
- Hardness range 75 – 97 Shore A (or 30 – 45 Shore D)
- Good resistance to mineral oils, greases, petrol and various solvents
- Good resistance to ozone, UV radiation and high-energy radiation
- Temperature range of -30 °C to +80 °C (short term -40 °C to +130 °C)
- Special qualities approved according to LFGB (Food, Commodities and Feed Code)
- Hydrolysis-resistant settings
EXCELLENT WEAR RESISTANCE
The convincing mechanical and dynamic properties of Vulkollan® are clear features of this classic in the field of compact polyurethane elastomers - and for decades the epitome of highest performance and outstanding quality. The high-quality raw components, a polyester polyol and an equally high-quality di-isocyanate, in conjunction with special chain extenders, make it possible to precisely set up the desired material properties - while guaranteeing a consistently high, reproducible level of technical values.
Only a small number of selected companies are licensed to use the trademark „Vulkollan®“ of COVESTRO DEUTSCHLAND AG to use and to proces Vulkollan®. The strictly defined materials for the production of Vulkollan® are continually tested consistent material checks - the best guarantee of a steady quality elastomer with the highest standards.
A variety of moulded parts, high-quality wheels and rollers, but also semi-finished products for further mechanical processing find their use wherever a maximum of wear resistance and mechanical and physical strength are required.
The hardness range of Vulkollan® is measured both in Shore A and Shore D. The range extends from about 80 to 97 Shore A, or 30 to 45 Shore D. In practice the hardness settings of Vulkollan® can achieve elasticity as rubber on one side, and the rigidity of thermoplastic materials on the other side.
Vulkollan® is applicable between -30 °C and + 80 °C (for short periods up to + 130 °C). The modulus of elasticity and thereby the deformation resistance is from -10 °C to + 100 °C almost constant. Systems with a very good cold flexibility lose their rubber elasticity at about -30 °C, without getting brittle. Depending on hardness and temperature influence the modulus of elasticity range of Vulkollan® is between 10 and 600 MPa. Under different stress conditions, the wear resistance of Vulkollan® is better than most other elastic materials.
At so-called wet wear, at usage of a lubricant, for example water, oil or other liquid against the friction partner; Vulkollan® can be even more wear-resistant than steel.
Vulkollan® is also well suited for use as a construction material for damping high frequency vibrations in vehicles and machines. Damping elements should be dimensioned in a way that the occurring by converting mechanical energy into heat temperature does not exceed about 80 °C in continuous operation in the inner part.