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Because of the special arrangement of its molecules, a new coating made of corn starch can repair small scratches by heating itself
The crosslinking of the ring molecules makes the material flexible, thus compensating for scratches and disappearing again. The new coating was developed by experts from the Leibnitz Institute for New Materials (INM) and scientists from saar
.
a ring derivative of corn starch
scientists use a ring derivative of corn starch, called cyclodext, for the network structure of paint. These cyclodextres are worn like pearls on long-chain polymer molecules. In polycycline produced in this way, cyclodext on the polymer line can move freely on almost certain parts of the linear polymer and prevents the expansion of the plug molecule from loosening. Pearl chains are cross-linked by chemical reactions. "The resulting network is elastic and resilient, just like a breeding unit," explains Carsten Becker-Willinger, head of INM's nano-planning division. "When exposed to high temperatures, the ring dedexilation rings migrate along the plastic line back to the surface scratch area, compensating for the gaps formed by the scratches.
Remedia scratches in just one minute
For functional coatings with greater mechanical stability and weather resistance, INM scientists change the composition of polyline by adding other components such as polysilane and inormeric nanoparticles. At the same time, they were able to reduce the original repair time from a few hours to a few minutes. Micro scratches can now be removed in less than a minute at 100 degrees Celsius. In a series of tests, the scientists considered standard ISO guidelines for the coatings industry. "Industrial applications can only be imagined if these standard guidelines are met," Becker-Willinger said, summing up the current state of research.
are now working to shift coating production from laboratory-scale to test-plant-scale. Only in this way can we provide the basis for mass production. INM is willing to work with interested companies to turn development into applications.
