Nanocomposites and foams fabricated by nano-particulate filtration and ultrasonic resin impregnation method
TS-037194 — Cost-effective methods that infiltrates multi-walled carbon nanotube (MWCNT) nanopapers with epoxy resin.
Polymer carbon nanotube composites have many intriguing physical properties lightweight, high-mechanical strength, thermal conductivity, electrical conductivity, and chemical stability. Conventional techniques of directly mixing nano-particulates, such as multiwalled carbon nanotubes, with polymer…
Polymer carbon nanotube composites have many intriguing physical properties lightweight, high-mechanical strength, thermal conductivity, electrical conductivity, and chemical stability. Conventional techniques of directly mixing nano-particulates, such as multiwalled carbon nanotubes, with polymeric resins have a number of process limitations, such as poor dispersion or long dispersion time, which led to decreased quality. These effects are most common when the desired nano-composte has greater 5% weight of carbon nanotubes. Convetional techniques involve adding loose, unbound nano-particulates to the polymers, which leads to agglomeration and a significant increase in viscosity. A cost and time effective process is needed to properly disperse nano-particulates within a polymeric resin.
Researchers at The Ohio State University, led by Dr. James Lee, have developed a method to produce polymer carbon nanotube composites, with greater than 5% loading of the carbon nanotubes. The process includes creating a carbon nanotube paper, then bring a polymer resin into contact with the carbon nanotube paper. The high dispersion is achieved by applying ultrasonic vibrations to the mixture, for 2-6 seconds. The prepared nanocomposites with high loading of well-dispersed nanotubes may be processed in various polymer fabrication processes (such as injection molding, compression molding, extrusion, etc.) and into light-weight foams with nano-sized cells, not achievable by existing foaming methods. Composites fabricated using Dr. Lee’s technique could be used for abrasion-resistant coating for sport goods, wind turbine blades, helicopter blades, aircraft wings, portable electronics housing, on-chip heat sink for quick cooling, and thin-film electric heater for aircraft wing deicing.
- Abrasion-resistant coating for sport goods, wind turbine blades, helicopter blades, and aircraft wings
- Portable electronics housing
- On-chip heat sink for quick cooling
- Thin-film electric heater for aircraft wing deicing;
- Lightning strike protective composites
- Anticorrosion coating for metals
- Affordable and scalable process for continuous fabrication of CNT nanopapers
- Suitable for applications that require fast processing rate and short resin dwell time
- Processes polymers over wide range of viscosities