By Cameron Chai
Woodbridge Group, a developer and producer of polyurethane and expanded polypropylene products, has made a major breakthrough with the development of a new flame retardant foam material, WhisperTech V0, for acoustical and thermal insulating uses. The foam meets the UL-94 V0 rated flammability specifications required for noise, vibration and harshness (NVH) engine bay applications.
WhisperTech V0 foam provides improved transmission loss properties and sound absorption when compared to other materials, like engineered fibres and metals. The low density, flexible polyurethane formulation offers exceptional engine-bay sound management capabilities and surpasses the industry standards for flammability of polymeric materials. The foams can self extinguish, when they are exposed to an open flame. WhisperTech UL-94 V0 rated foam can be exclusively engineered to meet several specifications, including no-drip performance, humidity aging, heat aging and coloring.
Woodbridge’s polyurethane formulations can either be produced in mechanically cut sheets or molded to meet the required acoustical performance levels. These materials are utilized to balance NVH performance and cost requirements for Dash Insulators and Hood Liners.
In addition, they offer higher thermoforming performance by using a wide range of face materials to enhance the end product, commented Domenic Sinopoli of the Woodbridge Group.
Woodbridge offers WhisperTech V0 flame retardant foams in various thickness, hardness and density and they are available in sheets and molded components. The materials can combine mounting brackets and fasteners for easy assembling.