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Polymers are generally really insulative materials, explains Scott, who graduating from UMass in December. Even though they have all of these benefits like being easily machined, chemical resistance or low density, they have around a 0.1 to 0.33 watts per meter Kelvin thermal conductivity. Its very insulative. While the materials that are good conductors of heat are large, bulky, hard to make and expensive to maintain.

Every single time you have some sort of overheating problem, some sort of weight problem, some sort of chemical-like corrosion problem, you could do it better if you had these materials in your repertoire to use, says Scott. The development of thermally conductivepolymers allows us to create new designs with low-weight, complex geometries, replacing their heavier and more restrictive metal counterparts.

As the bounds of space travel continue to be pushed, this area of study becomes even more valuable. When I was doing research for this fellowship application, I looked into return missions where were getting samples from the moon and Mars and were bringing them all the way back, says Scott. Just sending one rocket is something thats already weight constrained, so adding a return rocket only tightens the tolerance.

The thing that loses out is that youre trying to bring rocks back, he says. And rocks are heavy. To maximize the outcome of this kind of mission, you need to build your equipment with the right materials with the right properties.

He gives an example of what this might look like on an unmanned mission. You control everything with electronics and motors. In order for motors and actuators to move, an electric current passes through a coil, and that uses magnetism to push something. When you do that, it produces heat, no matter what. You need to be able to manage this heat so nothing overheats or catches on fire, and do it in the most cost-effective, weight-effective way possible. Polymers are just the no-brainer for those, especially thermally conductive polymers because you want these to spit off heat as rapidly as possible, that way you can use them to the highest level.

Another application: astronaut clothes, adds Scotts faculty mentor, Yanfei Xu, assistant professor of mechanical and industrial engineering in UMass AmherstsCollege of Engineering. When the astronauts go to space, they want to wear wearable, flexible, lighter-weight clothes, she says. When they do a spacewalk, how can a space suit keep the astronaut as cool or as warm or as comfortable as possible? Clearly, we are aware of polymer-based materials, which have unique properties including being lighter weight, wearable, flexible and comfortable.

With the support from the Space Grant, Scotts research will focus on turning polymer insulators into heat conductors and investigating interfacial thermal transport between polymers and fillers in polymeric composites in Xus research group.

Xus excitement for her students success is obvious. As an educator, I dream to push the next generation of our talents, like Brendan and other students, to go into STEM fields, to consider pursuing higher education. Its so wonderful to work with young people. They are very creative. Give them the best opportunity to work on the frontier of research and the outcomes will benefit not only our lab, our university, or our country, but the world.

Originally posted here:

UMass Amherst Engineering Major Brendan Scott Awarded NASA ... - UMass News and Media Relations