ACOUSTIFLEX® S NBR

ACOUSTIFLEX® S NBR is a single-ingredient polyurethane (PU) material known for its burn-through resistance, flexibility, and lightweight properties. It functions as a resin in plastics and elastomers applications, providing enhanced durability and performance.

Chemical Family: Polyurethanes (PU)

Features: Cost Effective, Excellent Burnout Properties, Flexible, Good Cooling Performance, Light Weight, Low Odor

Brochure
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Enhanced TDS

Identification & Functionality

Blend
No
Chemical Family
Single Ingredient
Yes

Features & Benefits

Labeling Claims
Ready-to-Use Product Features
Features
  • Can be used for thermoformable semi-rigid foam and batch block foam for lightweight applications
  • Offers great flexibility in manufacturing
  • Available in Non-Burning Rate (NBR) and Self-Extinguishing (SE) versions
Product Features
  • Up to a 20% raw material saving compared to the 15 kg/m² variants for lighter weight and faster processing
  • Very good sound absorption for quieter vehicles
  • Ease of thermoforming allows thicker, more complex shapes and customizable designs of component parts
  • Ratio change to tune stiffness (bonnet liner) and thermoformability (dash insulator) possible for a wider processing windov
  • No waiting time for block slicing and thermoforming to reduce processing time and storage cost
  • Developed for thermoformable semi-rigid foam with improved sound absorption and lightweighting
  • Consistent acoustics and density through the block
  • Cost efficient production, consistent batch-to-batch quality
  • Flammability characteristics - MVSS 302, UL-94VO
  • Phenolic free formulations
  • Self-support - reduced number of clips are required for faster assembly
  • Can be used for thermoformable semi-rigid foam and batch block foam for lightweight applications
  • Offers great flexibility in manufacturing
  • Available in Non-Burning Rate (NBR) and Self-Extinguishing (SE) versions
Product Sustainability Benefits
  • Acoustic comfort
  • Low Volatile Organic Compound (VOC) emissions
  • Low odor
  • Fast cool down and cycle time
  • Quality consistency
  • Lower production waste level
  • Low density to support lightweight design
  • Ease of thermoforming

Applications & Uses

Product End Uses
Markets
Applications
Application Details

Include semi-structural components such as:

  • Engine and trunk compartments
  • Tunnel insulation
  • Outer tunnel absorber
  • Outer dash panel absorber
  • Engine hood liners

Technical Details & Test Data

Technical Details

ACOUSTIFLEX® S NBR/SE polyurethane systems can meet different customer needs.The following table provides an overview of typical properties:

FEATURES AND BENEFITS ACOUSTIFLEX® S NBR/SE 4

ACOUSTIFLEX® S NBR/SE 5

Number of system components 4

5 (water stream added)

Tunable density via separate water stream

   
Core density (kg/m³) 12-14 12-14
Tensile strength ISO 1798 (flexible) – Stress at max load 25 ± 10 35 ± 10
Tensile strength ISO 1926 (rigid) – Stress at max load 40 ± 10 50 ± 10
Elongation – ISO1926 18 ± 5 18 ± 5
Flammability – MVSS302 NBR/SE NBR/SE

Typical properties can vary depending on local circumstances and application

 

Packaging & Availability

Regional Availability
  • Global