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UK: Hemp For Eco-Friendly Brake Pads

Azom.com

Tuesday 16 Mar 2004

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Scientists and engineers at the University of Exeter are investigating
whether hemp and other natural materials could be used to make sustainable
and eco-friendly brake pads. The UKP400,000 research project will be
carried out for the DTI by Exeter Advanced Technologies (X-AT), which is
based at the University. Eight other partners from the automotive and crop
industries will take part.

Currently 20,000 tonnes of brake materials pollute the environment in the
UK each year. Pollution occurs not just from cars and lorries but from tube
trains, trains and trams. Alternative natural fibres, like hemp and sisal,
will cut pollution and create cost savings. For instance, replacing Kevlar
with hemp would make production cheaper by a multiple of at least fifteen.

Dr. Luke Savage of X-AT said: 'This process began with the removal of
asbestos from brake pads in the 1980s. Its replacement, Aramid fibre (often
known as Kevlar) is very expensive. Eco-friendly alternatives such as jute,
hemp, nettle, and flax are all much, much cheaper. The team at X-AT is
excited by the possibility of a break-through replacement which will
revolutionise brake manufacture and protect the environment.'

The project has two main aims: to encourage the removal of harmful
materials used in brake pads, and to create a new market for agricultural
crops within the automotive industry.

There will be major cost savings for the automotive industry if X-AT and
its partners can find a workable alternative to the Kevlar (Aramid), lead
and antimony used in brakes. Kevlar is expensive at UKP14 to 20 per kg
compared to hemp and sisal at under UKP1.

There are 80 million sets of brake pads / shoes changed on UK vehicles each
year. The replacement parts market for brakes (shoes and pads) is UKP450
million - based on 2001 figures.

For more information on brake components

Posted 16th March 2004

 

 

 

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