Plastic 'Airbumps' protect Citroën exterior

  • 03-Nov-2014 10:56 EST
13642_20547_ACT.jpg

Citroën Cactus with unpainted “Airbumps” from BASF.

For its quirkily styled new Cactus, Citroën uses UV-stable thermoplastic polyurethane (TPU) for unpainted exterior cladding called “Airbumps” to give protection against low-speed impacts and scratching.

PSA Peugeot Citroën worked with chemical company BASF and Swiss company Rehau on the development of the Cactus’ TPU exterior detailing.

BASF optimized its new grade Elastollan AC 55D10 HPM (High Performance Material) for unpainted application on the car to create the air-filled “cushion bumpers” called Airbumps, fitted to the sides, front, and rear of the car. Rehau makes the side Airbumps, Faurecia (France) the front and rear.

BASF states that the injection-molded Elastollan HPM can be pigmented (in black, brown, light or dark gray colors), so does not require painting. The material has long-term durability and meets required levels of haptics and appearance. The new TPU grade adds to its established characteristics via what BASF describes as “outstanding surface properties even at low wall thicknesses.” It is scratch, UV, and weather resistant, is easy to clean, and has a high service temperature of 120 to 150°C (248 to 302°F).

The injection-molded Elastollan component is mounted on a polycarbonate and ABS (acrylonitrile-butadiene-styrene) support shell to form flexible cavities that can be dented but are able to bounce back into shape. The mounting properties of HPM facilitate tight assembly that conventional trim materials such as polypropylene typically do not have, according to BASF.

The company adds that previous automotive applications for Elastollan were for underhood cable sheathing, and in the cabin for door handles, gearshift/transmission selector knobs, and cupholder linings.

Share
HTML for Linking to Page
Page URL
Grade
Rate It
3.67 Avg. Rating

Read More Articles On

2016-08-01
For 2016, the fourth year of its annual Enlighten Awards that acknowledge the best innovations in vehicle weight reduction, Altair named GM’s 2016 Cadillac CT6 as the winner in the Full-Vehicle category and ContiTech’s polyamide rear-axle transmission crossbeam is the winner in the Enlighten Awards’ Module category.
2016-10-31
Despite rumors of an acquisition by Apple, McLaren is racing ahead on £1B in self-funded R&D and an ambitious plan to develop an electric supercar worthy of the name.
2017-03-13
In the ongoing design and engineering crusade that is vehicle lightweighting, grams count. In some cases, tenths of a gram count. Regardless of how fuel price has moderated in the U.S. in recent years, the importance of global platforms and global markets means the drive to create more mass-efficient vehicle structures, subassemblies and components continues unabated.
2016-10-06
Peugeot used the 2016 Paris Show for the public launch of the 3008 and 5008 models, now re-defined as SUVs. Both models use the PSA Efficient Modular Platform 2 (EMP2).

Related Items

Training / Education
2013-04-09
Training / Education
2013-04-09
Training / Education
2013-04-09
Article
2016-08-15
Training / Education
2011-04-09
Technical Paper / Journal Article
2010-09-28