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Noise, Vibration, and Harshness (NVH) Systems

NVH solutions for a quieter ride

Redefining the passenger experience

When it comes to the premium automotive experience, Dow technologies in the automotive acoustics space are reimagining what it means to have a quieter ride. Our expertise and products range from polyurethane foams, polyolefin elastomers and resins, to coating materials – all with a focus on developing holistic NVH systems. With a robust acoustics product portfolio coupled with our unique testing suite, we create innovative, tailor-made NVH solutions.

Polyurethane foams

Used in myriad applications, polyurethane foams, like BETAFOAMTM and Flex Foam Systems, serve as superior sound absorbers in automotives, dispersing the noise before it reaches the driver’s ear.

BETAFOAM™ cavity fill foams maximize NVH performance when compared to baffle technology while minimizing costs and providing superior lightweighting options; provides increased structural support; and helps seal out the cabin against road and engine noise and dust.

With excellent sealing and form-fitting, lightweight cavity fill capabilities, BETAFOAM™ polyurethane foams can be used wherever cavity sealing or stiffening is required, including:

  • Body-side joints
  • Door panels
  • Engine cradles
  • Frame rails
  • Hydroformed replacements
  • Lateral rails
  • Longitudinal structure
  • Pillars
  • Sills
  • Underbody cross-car structure

Flex Foam Systems are optimized for cost, weight, and performance. Our in-house expertise with formulated systems enables the development of a specialized acoustic absorption layer in flooring applications.

Advantages:

  • Excellent tensile properties
  • Outstanding color retention during processing
  • Excellent adhesion to substrates such as vinyl skin
  • Durable
  • Fast curing

Polyolefin elastomers and resins

Serving as a key component of the acoustic barrier, polyolefins help improve layer processability and ability to block sound waves from entering the passenger cabin. By improving the NVH performance of carpeted flooring applications while reducing the weight of the acoustic barrier, Dow’s polyolefin solutions are constantly anticipating rigorous consumer demands to drive the industry forward.

ENGAGE™ Polyolefin Elastomers enable the fabrication of high quality NVH Heavy Layer products that are easy to process, shape and install.

Advantages:

  • Outstanding flexibility (Low Modulus) and low temperature ductility
  • Exceptional filler acceptance enabling very high filler levels
  • Recyclable for in-process scrap re-use minimizing environmental impact
  • Low odor and VOC emissions
  • Excellent melt elongation and processability

NORDEL™ EPDM enables high quality vibration dampening in vibration absorbers and shock mounts.

Advantages:

  • High molecular weight enable high filler acceptance
  • Broad molecular weight distribution and tailored molecular architecture for excellent processability
  • Tailored composition provides excellent physical properties and low temperature flexibility performance

KELDAX™ Sound Barrier Resin is a filled, ethylene-based polymer that provides acoustical sound barrier performance in automotive and other applications.

Advantages:

  • Fully formulated NVH solution
  • Easy to process and form
  • Easy to process and form

Coating materials

ACOUSTICRYL™ Acrylic Resins for liquid applied sound damping (LASD) offer easy spray alternatives to asphaltic membranes and viscoelastic materials across a range of applications where damping solutions are needed.

Uses:

  • Marine/Rail
  • Passenger cars
  • RV/Van/Bus
  • Agriculture and construction equipment

Advantages:

  • Better damping options
  • Lower weight options
  • Lower odor
  • Non-reactive on the line
  • Simpler application
  • Lower VOC


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