en.Wedoany.com Reported - Japanese chemical manufacturer Sumitomo Bakelite has recently launched a new creepage-resistant insulation material. As electronic devices and components move toward higher voltages, the surface of insulation materials can locally carbonize, forming current paths—a phenomenon known as "creepage." This new creepage-resistant insulation material is based on a composite of thermosetting resin diallyl phthalate (DAP) and glass cloth, produced as laminates and fiber-impregnated resin prepregs. In surface creepage tests conducted in accordance with UL2597 standards, the new material achieved a creepage resistance performance of 900V.
This new creepage-resistant insulation material is primarily targeted at electric vehicles (xEVs), industrial power supply equipment, and electronic devices. By optimizing the composite process of resin and glass cloth, Sumitomo Bakelite has enhanced the material's reliability under high-voltage environments. With this new creepage-resistant insulation material, equipment manufacturers can reduce electrical clearances without compromising safety, contributing to the miniaturization and high-density integration of electronic devices.
In high-voltage applications, creepage is a common cause of insulation failure. This new creepage-resistant insulation material delays the formation of carbonized paths through its structural design. Test results show that its 900V withstand voltage meets the insulation requirements of current mainstream high-voltage electronic systems. Sumitomo Bakelite states that the new material is suitable for long-term operation under various temperature and humidity conditions, providing solutions for components such as power modules and onboard chargers.
With the growing demand for high-voltage devices in the xEV and industrial power markets, this type of new creepage-resistant insulation material is expected to see broader adoption. Sumitomo Bakelite plans to promote the product globally, collaborating with customers on design integration and validation efforts.
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