Magnetic Induction Cuts Coating Curing Times
Scientists at Nanyang Technological University Singapore are working with automotive supplier Motherson to develop magnetic heating technology that shortens industrial coating curing times and reduces energy consumption. Laboratory tests show that adhesive coatings cured using magnetic induction for one hour achieve comparable bonding strength to coatings cured in a conventional oven for 24 hours.
The approach concentrates heat within the coating material rather than applying it to an entire component. This method reduces energy requirements and limits the risk of heat damage to surrounding parts.
The research is led by Professor Raju V. Ramanujan and Associate Professor Terry Steele from the School of Materials Science and Engineering at Nanyang Technological University. The team first demonstrated magnetic-field-activated epoxy curing in 2020.
Spinheat Real-Time Temperature Monitoring System
The latest version of Spinheat incorporates real-time temperature monitoring. By giving operators the ability to modify the magnetic field as curing takes place, the system can control thermal output and minimize problems such as overheating, bubbling, and alternative coating flaws.
The partnership with Motherson focuses on adapting the technology for industrial manufacturing. Particular attention is being paid to coatings used on automotive and aerospace components.
The companies are investigating how different coating thicknesses, component geometries, and production requirements affect the curing process. Testing the technology under active manufacturing conditions moves it beyond basic laboratory demonstrations.
“The next challenge is to understand how this can work reliably within automotive manufacturing,” Ramanujan told The Engineer. “Working with Motherson will allow us to develop Spinheat around actual industrial needs, including the materials, component shapes and production requirements.”
Resin Coatings and Industrial Use Offer Commercial Potential
Potential applications include resin-based coatings for automotive and aerospace parts. Reducing curing times can also decrease the physical space required for large heating equipment on factory floors.
Researchers are investigating whether the approach reduces energy consumption and carbon emissions. Alongside the industrial collaboration, the university is exploring potential routes to commercialise the technology.
Commercialization discussions involve other industry partners and the possibility of establishing a start-up company. Support for this commercial path comes from the university’s Innovation and Entrepreneurship initiative.
Magnetic Heating Technology Questions
How fast does magnetic induction cure adhesive coatings?
Adhesive coatings cured using magnetic induction achieve comparable bonding strength in one hour compared to 24 hours in a conventional oven.
Which institutions are developing Spinheat?
Researchers at Nanyang Technological University are developing the technology in partnership with automotive supplier Motherson.
What prevents overheating during the magnetic curing process?
The system incorporates real-time temperature monitoring, which allows the magnetic field to be adjusted during curing to regulate heat delivery.
Did you know?
NTU first demonstrated magnetic-field-activated epoxy curing in 2020.
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