Polyolefin Elastomer for Automotive Interior Parts: Specifying for Performance

How POE enables low-VOC, high-durability automotive interior components — from dashboards to door panels

Automotive interior parts present a tough combination of requirements. They need to be soft to the touch, durable enough to last 10+ years, and low enough in VOC emissions to meet increasingly strict cabin air quality standards. Polyolefin elastomer has become a go-to material for achieving all three — when you specify it correctly.

We supply POE grades specifically developed for automotive applications, with full OEM approval documentation and VOC testing to meet global standards. Here's what you need to know about specifying POE for automotive interiors.

Why POE Works for Automotive Interiors

Traditional automotive interior materials — PVC, TPO with EPDM, or even leather — each have limitations. POE offers a combination of properties that's hard to match:

• Low VOC emissions: POE's saturated hydrocarbon structure means no plasticizers, no halogens, and inherently low odor. Critical for meeting VDA 270 and JAMA standards.
• Soft touch feel: Shore A hardness of 60–90 achievable with the right POE grade and formulation — the range that feels "premium" to the touch.
• UV and heat stability: Dashboards see 100°C+ surface temperatures in summer sun. POE's saturated backbone resists degradation better than unsaturated rubbers.
• Recyclability: POE-based interior parts can be recycled through existing polyolefin streams — increasingly important for automotive sustainability targets.

Key Applications in Automotive Interiors

POE finds use across multiple interior components, each with specific performance requirements:

VOC and Odor: Meeting Global Standards

Cabin air quality has become a major differentiator for automakers, especially in premium segments. POE's inherent cleanliness helps meet the strictest standards:

The key to low VOC isn't just the base POE — it's also controlling residuals from catalysts, antioxidants, and any processing aids. Our manufacturing uses advanced catalyst systems and purification steps to minimize these residuals.

Formulating for Specific Interior Applications

Pure POE is rarely used as-molded for interior parts. It's typically compounded with other ingredients to achieve the right balance of properties:

• With PP for structural parts: A TPO blend (POE + PP) provides the soft touch with the rigidity needed for self-supporting parts like door panels. Typical ratio: 30–50% POE in PP.
• With fillers for cost and modulus: Talc or calcium carbonate at 10–20% loading reduces cost and increases stiffness without sacrificing too much softness.
• With UV stabilizers: Dashboard and door panel applications need UV protection. Hindered amine light stabilizers (HALS) at 0.3–0.5% prevent surface degradation.
• With colorants: POE accepts pigments well, but high-heat applications need heat-stable colorants. We provide color masterbatch recommendations for our grades.

Long-Term Durability: The 10-Year Test

Automotive OEMs expect interior parts to look and perform like new after 10 years of use. POE delivers this through:

• Thermal aging resistance: POE maintains properties after 1000+ hours at 100°C — the equivalent of years of dashboard exposure.
• UV stability: With proper stabilization, POE shows minimal color shift or surface cracking in Florida or Arizona exposure testing.
• Chemical resistance: POE resists the sunscreens, hand sanitizers, and cleaning products that contact interior surfaces daily.
• Abrasion resistance: Seat bolsters and armrests see constant contact. Properly formulated POE compounds resist wear and maintain appearance.