New product concept

BREAKTRHOUGH: Low Frequency Sound Absorption Technology Reducing Vehicle Noise

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Type of Solution sought


A novel automotive technology allows 30% sound absorbing improvement at low frequency wavelength without compromising on weight compared to conventional materials.

Who might be interested?
Equipment makers and OEMs in the automotive/transportation industry facing challenges with regards to NVH (Noise, Vibration, Harshness), including:
  • Complying with new regional standards and regulations for vehicles noise reduction.
  • Managing completely new noise perspectives when developing autonomous, connected, and electric automobiles.

Description of Desired Solution

A novel automotive technology allows 30% sound absorbing improvement at low frequency wavelength without compromising on weight compared to conventional materials.

Detailed Solution Description

Overcoming successfully one challenge may rouse another. Carbon neutral is one of the major trends for environmentally friendly vehicles. However, to reduce automobiles’ low frequency noise engineers have no choice but to use heavy weight sound absorption materials. This results in increased vehicle weight and CO2 emissions volume.
An innovative material successfully overcomes this issue offering new opportunities for automotive manufacturers.
Technology Benefits Technology benefits
  • 30% sound absorbing enhancement at low frequency wavelength
  • Thinner thickness | 11 mm
  • Flexibility to fit curved surface
  • Adjustable sound absorption frequency range
  • High durability
  • Reduce heat radiation
Outstanding NOISE ABSORPTION and THINNER THICKNESS
vs conventional materials
Road Noise
ADJUSTABLE sound absorption frequency range
based on the specific application needs
Frequency range
Excellent DURABILITY when exposed to heat and humidity conditions
Heat cycle and humidity cycle test
DURABILITY
New technology
Initial state
New technology |
After heat exposure and humidity cycles


Test conditions:
-30°C, 12 hrs → 120°C, 12 hrs → -30°C, 12 hrs →
500°C/95%RH, 12 hrs x 4 cycles
Keep SHAPE and FLEXIBILITY without shrinkage
Appearance
Initial state After heat exposure
and humidity cycles
Top
Top Initial state Top After exposure
Side
Side Initial state Side After exposure
Bottom
Bottom Initial state Bottom After exposure
Additional data available on demand:
  • Chipping Resistance Type
  • Heat endurance test
  • Tensile strength
  • Thermal insulation performance