MOSCOW (MRC) -- As the first manufacturer of thermoplastic polyurethane (TPU), BASF has successfully optimized the material so that it can be applied extensively and unpainted on the vehicle exterior, reported the company on its site.
The automotive manufacturer PSA Peugeot Citroen uses the new TPU grade Elastollan AC 55D10 HPM (High Performance Material) for cladding the Citroen C4 Cactus with so-called Airbumps. These are large air-filled cushion bumpers in contrasting colors:tThey are fitted on the sides as well as on the front and rear of the vehicle, protect the car exterior from impact and scratches and give the vehicle its distinctive look.
This world first is the result of many years of development work between the French automotive manufacturer, the supplier Rehau, Switzerland and BASF. Rehau manufactures the side Airbumps, while the company Faurecia, France produces the bumpers at the front and back.
The advantage of Elastollan HPM lies in its freedom of design and long-term durability together with attractive haptics and a high-class appearance. The new material combines the properties of conventional TPU, such as good tensile strength and abrasion resistance, elasticity, excellent impact resistance at low temperatures and high media resistance, with new features: It has outstanding surface properties even at low wall thicknesses, it is scratch-resistant, UV- and weather-resistant, is easy to clean and has a high service temperature of 120 to 150 C.
Good assembly properties: this makes it an ideal surface for the impact-absorbing Airbumps which give the C4 Cactus its characteristic graphic looks. The injection-molded Elastollan component is mounted to a polycarbonate (PC) and acrylonitrile-butadiene-styrene (ABS) support shell, thus forming flexible cavities that can be dented and bounce back again. The entire structure is fixed to the metal chassis. Because of the good mounting properties of the HPM grade a tight assemblage is possible which conventional trim materials such as polypropylene do not achieve.
Elastollan HPM can be pigmented, so the Airbumps do not have to be painted. Thus, they do not require any special maintenance and in case of an accident help reduce the repair costs for the vehicle.
As MRC informed earlier, in September 2014, once again, PSA Peugeot Citroen presented awards to its best suppliers. BASF’s Coatings division received the award for its CathoGuard 800 cathodic e-coat. This is applied to the vehicle body to protect it from corrosion. The special benefit it offers PSA is its cost savings potential.
BASF is the world’s leading chemical company. Its portfolio ranges from chemicals, plastics, performance products and crop protection products to oil and gas. BASF had sales of about EUR74 billion in 2013 and over 112,000 employees as of the end of the year.
MRC