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Bonding carbon fibre automotive bonnet (hood)

Carbon fibre (or carbon fiber if you’re in the US) composite is made up of interwoven carbon filaments combined with a resin. It has an extremely high strength to weight ratio combined with good heat and chemical resistance. It is a popular material in aerospace, motorsport, defence / military and sports equipment manufacture.

Carbon fibre car parts are highly desirable due to their lightweight and high performance structure.  Improved vehicle performance and fuel economy can be achieved by incorporating lightweight components in the assembly, replacing heavier and less economical metal parts. The material also looks good – there is even a huge market for pretend carbon fibre vehicle wraps to make it look like your car has carbon fibre parts (although it should be noted vinyl wrapped vehicle performance is not improved!).

In this video, you can watch Permabond ET500 and Permabond PT326 being used to bond pre-formed bonnet shell components together and big head fasteners inside the bonnet.

ET500 is a fast curing two-part epoxy which cures at room temperature.

PT326 is a high performance polyurethane adhesive which is colour matched to the carbon fibre to give a perfect aesthetic finish, as well as high strength, impact resistance. This composite bonding adhesive offers flexibility and peel strength and will not crack off.

For further help and advice with your bonding application, please contact Permabond for assistance.