SABIC has introduced LNP THERMOCOMP WFC061I, a non-halogenated, flame retardant compound designed for critical e-mobility applications such as electric vehicle control unit housings. This glass fibre reinforced polybutylene terephthalate material delivers non-brominated and non-chlorinated flame retardance, addressing both fire protection and environmental impact concerns.

The compound is the first FR PBT suitable for precision laser welding, enabling reliable joining without adhesives, fasteners or vibration. Transmitting 20% of optical energy at 3.0mm thickness, it enables rapid assembly and streamlined manufacturing throughput. Replacing metal EVCU covers with LNP THERMOCOMP WFC061I yields substantial weight reductions and increased design flexibility, while low warpage improves production yield.

The development addresses specific engineering challenges in EVCU design, where housing materials must protect sensitive electronic components from fire, smoke, impact and moisture. The laser welding capability allows energy to pass through the transmissive material and generate heat at the interface, creating molecular bonding between components while eliminating mechanical fasteners and reducing assembly complexity.

Colorability and moisture resistance support automotive electrical system integrity, while the compound’s glass fiber reinforcement provides mechanical strength. The material is available globally and secured a 2025 Edison Award for innovation.

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