Featured Research

from universities, journals, and other organizations

Improving Car Coatings From Scratch

Date:
August 28, 1998
Source:
American Chemical Society
Summary:
Two polymer researchers have developed a new way to show how "micro-scratches" tinier than a human hair, can hurt your car's clear coating, a step forward toward developing an improved generation of polymer coatings that will resist scratches. The new test methods were described here today (Aug. 27) at the national meeting of the American Chemical Society, the world's largest scientific society.

New Polymer Tests Show How "Micro-Scratches" Develop, Damage Clear Coats

Related Articles


BOSTON, Mass.--Two polymer researchers have developed a new way to show how "micro-scratches" tinier than a human hair, can hurt your car's clear coating, a step forward toward developing an improved generation of polymer coatings that will resist scratches. The new test methods were described here today (Aug. 27) at the national meeting of the American Chemical Society, the world's largest scientific society.

Dupont researchers Li Lin and Greg Blackman described how the new method permits them to examine tiny scratches as they develop in real time. Similar to the minuscule scratches that can occur when you wash your car, the micro-scratches are extremely tiny. "A human hair laid up against one of these scratches would dwarf it," Blackman says.

The combination of many of these tiny scratches allows light to scatter over the coating, making the damage visible to the human eye, and leading to what the two researchers call an "objectionable appearance" that doesn't meet the auto industry's goal that cars retain their visual appeal for 10 years.

Examining the mechanical properties of the polymer during the formation of such small scratches, or swirl marks as they are often called, required an analytical device that was not commercially available. Lin developed a unique micro-scratch tester that was then coupled with an atomic force microscope and a video camera, thereby allowing real-time examination of scratches as they developed.

One surprising finding for the scientists was that in the early stages of scratch formation there is no loss of material, or debris formation. Rather, small cracks appear and create voids in the surface of the coating, which cause the scattering of light.

Based on their work, new coatings that Blackman describes as "significantly better" already have been applied to some cars for field testing. The analytical device developed by Lin has been licensed for development by CSEM Instruments (Centre Suisse d'Electronique et de Microtechnique SA) of Switzerland.


Story Source:

The above story is based on materials provided by American Chemical Society. Note: Materials may be edited for content and length.


Cite This Page:

American Chemical Society. "Improving Car Coatings From Scratch." ScienceDaily. ScienceDaily, 28 August 1998. <www.sciencedaily.com/releases/1998/08/980828073112.htm>.
American Chemical Society. (1998, August 28). Improving Car Coatings From Scratch. ScienceDaily. Retrieved December 22, 2014 from www.sciencedaily.com/releases/1998/08/980828073112.htm
American Chemical Society. "Improving Car Coatings From Scratch." ScienceDaily. www.sciencedaily.com/releases/1998/08/980828073112.htm (accessed December 22, 2014).

Share This


More From ScienceDaily



More Matter & Energy News

Monday, December 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Will New A350 Help Airbus Fly?

Will New A350 Help Airbus Fly?

Reuters - Business Video Online (Dec. 22, 2014) Qatar Airways takes first delivery of Airbus' new A350 passenger jet. As Joel Flynn reports it's the planemaker's response to the Boeing 787 Dreamliner and the culmination of eight years of development. Video provided by Reuters
Powered by NewsLook.com
Man Parachutes Off Lawn Chair Airlifted By Helium Balloons

Man Parachutes Off Lawn Chair Airlifted By Helium Balloons

Buzz60 (Dec. 22, 2014) A BASE jumper rides a lawn chair, a shotgun, and a giant bunch of helium balloons into the sky in what seems like a country version of the movie 'Up." Jen Markham has the story. Video provided by Buzz60
Powered by NewsLook.com
Touch-Free Smart Phone Empowers Mobility-Impaired

Touch-Free Smart Phone Empowers Mobility-Impaired

Reuters - Innovations Video Online (Dec. 21, 2014) A touch-free phone developed in Israel enables the mobility-impaired to operate smart phones with just a movement of the head. Suzannah Butcher reports. Video provided by Reuters
Powered by NewsLook.com
Existing Chemical Compounds Could Revive Failing Antibiotics, Says Danish Scientist

Existing Chemical Compounds Could Revive Failing Antibiotics, Says Danish Scientist

Reuters - Innovations Video Online (Dec. 21, 2014) A team of scientists led by Danish chemist Jorn Christensen says they have isolated two chemical compounds within an existing antipsychotic medication that could be used to help a range of failing antibiotics work against killer bacterial infections, such as Tuberculosis. Jim Drury went to meet him. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins