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Old 14th March 2009, 09:16 AM   #1 (permalink)
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Self-healing car paint spells end of scratches

Self-healing car paint spells end of scratches

A car paint that heals itself could spell the end of scratches on your vehicle's bodywork after scientists developed a polyurethane coating that mends its own scratches with the help of sunlight.

Last Updated: 10:37PM GMT 12 Mar 2009



Handout photo of a paint scratch 'healing' itself. Photo: PA

When broken open, the material can repair itself in less than an hour as the ultraviolet radiation of the sun, causes a chemical reaction that allows it to 'heal'.

The US researchers believe it could be used in packaging, clothing and biomedical products as well as on vehicles.

Dr Marek Urban and Biswajit Ghosh, from the University of Southern Mississippi in Hattiesburg, created the material using a natural substance found in the shells of crabs and shrimps.

The coating consists of a network of ring-shaped "oxetane" molecules which split open when damaged, exposing two reactive ends.

Sunlight causes a chemical reaction which allows the material's crab-shell element, chitosan, to fix the broken rings. Chains of chitosan form cross-links with the reactive oxetane ends to close the rings and repair the network.

In human skin, wounds are healed by a cross-link network of the scar protein fibrin.

The scientists wrote in the journal Science: "An ideal automotive coating would mend itself while a vehicle is driven."

Tests showed that brighter sunlight speeded up the repair process. During summer, scratch healing would be three to four times faster in the sunny southern United States compared with the same level of exposure in the north.

"Because cross-linking reactions are not moisture sensitive, dry or humid climate conditions will not affect the repair process," the researchers wrote.

"The... networks exhibit the ability to self-repair upon exposure to UV light, but if exactly the same previously repaired spot is damaged again, the ability for further repair may be limited by the thermosetting characteristics of these networks."

http://www.telegraph.co.uk/motoring/...scratches.html

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Old 14th March 2009, 09:17 AM   #2 (permalink)
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Re: Self-healing car paint spells end of scratches

good news for the car owner

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Old 14th March 2009, 09:21 AM   #3 (permalink)
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Re: Self-healing car paint spells end of scratches

I would invest in this technology

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Old 16th March 2009, 10:21 PM   #4 (permalink)
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Re: Self-healing car paint spells end of scratches

Then need something to prevent dents

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Old 16th March 2009, 10:39 PM   #5 (permalink)
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Re: Self-healing car paint spells end of scratches

when will it come to singapore?haha =)

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Old 17th March 2009, 02:38 AM   #6 (permalink)
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Re: Self-healing car paint spells end of scratches

i agree.... i dono y some idiots y must die die open door so hard...... when there is so much space....
Originally Posted by wildswans View Post
Then need something to prevent dents

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Old 17th March 2009, 10:01 AM   #7 (permalink)
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Re: Self-healing car paint spells end of scratches

GOOD NEWS!
for car owner and spray painting work shop!

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Old 17th March 2009, 05:06 PM   #8 (permalink)
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Re: Self-healing car paint spells end of scratches

Originally Posted by Yongjin View Post
i agree.... i dono y some idiots y must die die open door so hard...... when there is so much space....
hate these kinda ppl the most! i always park at the corner and or leave alot of space for the next car. the most pissing thing is when they disregard the space and park across the line. *fumes* some ppl just blind, can't park in their own lot.. and heartless to cars.

Originally Posted by PRAYzBOY View Post
GOOD NEWS!
for car owner and spray painting work shop!
should be bad news for workshop coz they lose business...

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Old 17th March 2009, 05:16 PM   #9 (permalink)
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Re: Self-healing car paint spells end of scratches

ya.... wonder hw those tupid ppl get their lic...

actually half half la... they gt biz cos we all will go respray to this kind paint mahz... each car at least 1.5-2k...

bad ting is aft tat we wont need to go back againz.....

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Old 18th March 2009, 09:43 PM   #10 (permalink)
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Re: Self-healing car paint spells end of scratches

I hate these pple... Our new car was dented on its very first night by the idiot who parked next to us.

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Old 23rd April 2009, 03:31 PM   #11 (permalink)
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Re: Self-healing car paint spells end of scratches

My car was dented on four doors to the extent i cant be bothered anymore... These stupid moron drivers..

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