Continental Structural Plastics’ Materials Innovations Address Environmental and Safety Needs for Electric Vehicles

March 15 (2021

Continental Structural Plastics (CSP), a Teijin Group Company, is introducing several new advanced composite formulations that meet the most stringent electric vehicle battery enclosure performance standards for flammability, thermal runaway and VOC emissions while offering the design flexibility of sheet molding compound (SMC). These new composites include a low VOC formulation, an ATH filled system, an intumescent system and a phenolic system.

The low VOC formulation addresses the VOC regulations initially developed nearly a decade ago by the European Union and made stricter two years ago. To address these regulatory and customer targets in Europe and Asia, CSP modified its TCA Ultra Lite material, eliminating benzene as a byproduct.

Releasing fewer to zero VOCs is just one safety benchmark CSP’s new materials can achieve. CSP is introducing three formulations that can be adapted using different fiber types or formats, such as glass, carbon, blended, chopped and/or continuous. These proprietary formulas include:

• A traditional high-fill polyester/vinyl ester ATH system that uses conventional SMC chemistries is easily adapted to existing tools and will give excellent baseline flammability performance in the right design.
• An intumescent system utilizing chemistry similar to traditional SMC, but with better flammability and thermal runaway performance, as well as significantly increased mechanical properties over ATH-filled system.
• A phenolic system, which is ideal for high temperature applications where parts must meet fire safety, smoke emission, combustion and toxicity requirements. CSP’s phenolic system offers excellent flame retardance, heat and chemical resistance, and electrical non-conductivity characteristics.

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