Supercar Sunblock

GM reinvents carbon fiber to dress up the Corvette ZR1
Clear Advantage : These carbon-fiber panels are coated in a clear paint that wards off damaging sunlight. Photo by General Motors

After spending $100,000 on a car, you don’t expect the lightweight carbon-fiber trim to turn yellow and peel in the sun. But that’s the downside for carbon fiber with clear-coat (instead of colored) paint, as GM found when testing materials for the 2004 Corvette Z06 Commemorative Edition. So the company redesigned the clear coat and the epoxy resin binding the carbon fibers in the roof and trim of the 2009 Corvette ZR1.

Standard clear-coat paint lets ultraviolet light reach the epoxy, causing it to discolor. GM engineers added a benzene-based powder to the paint to block the lower-frequency part of the UV range, and they created an epoxy that won’t degrade under the higher frequencies. Unfortunately, the new clear coat has its own yellow tinge, but GM developed what it calls an “offset additive” to shift it back to a neutral hue.

Although the technology isn’t cheap—the half-gallon of paint on the ZR1 costs nearly $1,000—GM is patenting it for other uses. So even if you can’t drop 100 grand on a car, you may see the benefits in somewhat less expensive products such as tennis rackets.

More Amazing ’Vette Tech: The innovations in the 2009 ZR1 are more than skin-deep. According to GM, the first supercharged V8 engine in Corvette history should pound out greater than 620 horsepower, propelling the car to beyond 200 mph. GM had to reengineer the transmission with new gears, shafts and housings to handle the engine’s estimated 600 pound-feet of torque, and it added wider tires to hold the road. With the new drivetrain and components such as carbon-ceramic brake rotors and those carbon-fiber body panels, the ZR1 should trump the $308,000 Ferrari 599 GTB Fiorano on power-to-weight ratio, acceleration and top speed. Photo by General Motors

4 Comments

Comments

joerocket
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that's good they got the problem fixed. Leave it to those guys to come up with the sollution. That Vette really is a sporty looking car, no dout' and it's got the mods and stuff under the hood to back it up too. Really would like to get one, but the way things are going now i'll end up sitting in an old 92 Honda Civic. ow well...

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MarkP
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Interesting. I've been wondering what the component was that was used in the clear coat.

VetteTube has some great closeup videos of the carbon fiber:

http://www.VetteTube.com

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FreeWi11
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Why can't GM do this more often? Make use of their engineers and designers to come together and create something innovative to contribute to the auto world, and oh yeah, build cars people really proud of owning. For all the GM lovers out there, chin up; the light has shown through!

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joshuafangca
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cool

nice design

i like it

0 out of 0 people found this comment helpful

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