The use of self-limited positive temperature coefficient (PTC) carbon ink materials from DuPont helps ensure heated car seats maintain a more consistent temperature for greater comfort. Because the heat is self-limited by the molecular nature of the PTC material, seats do not overheat, thus improving safety. General Motors (GM) was the first automotive manufacturer to specify inherently safe, self-limiting materials for its seat heater applications in every vehicle, and the market for the technology is expected to continue to grow.
"The use of self-limiting technology is very important for designers given the fact that it is a safer way to generate controlled heat," said Joao Carlos Malerbi, Automotive segment manager, DuPont Microcircuit Materials. "Using smart materials like DuPont PTC inks not only makes heating safer, but also simplifies the control system. Leading manufacturers such as GM are recognizing the benefits, and we are pleased to continue to advance this technology."
In addition, PTC technology is used in consumer electronics such as hair dryers and curling irons, rice cookers and crock pots, and small form factor air heaters such as space heaters and air ducts.
The new DuPont PTC materials are compatible with a wide range of rigid and flexible substrates as well as double- sided adhesives. This feature allows designers more flexibility to choose the various components of their heaters and reduce their total cost of ownership. Additionally, using the newest PTC technology may result in a more streamlined manufacturing process because no post-processing is required.
DuPont Microcircuit Materials (MCM) has over 40 years of experience in the development, manufacture, sale and support of specialized thick film compositions for a variety of electronic applications in the automotive, display, photovoltaic, biomedical, industrial, military and telecommunications markets. For more information on DuPont Microcircuit Materials, visit http://mcm.dupont.com.