Posted on: January 26th, 2016 by Chase Corpus

Polyimide Acoustic Foam 


Soundown LCF Polyimide Foam is an engineered flexible foam insulation for acoustic and thermal applications. The extreme light weight and highly fire resistant nature of Polyimide foam makes it ideal for a range of applications.

Polyimide foam is extremely light, with a density of 0.38lbs per cubic foot as opposed to other traditional insulation materials that range from 1.5lbs to as much as 8lbs per cubic foot. The resulting weight savings is important for high-speed naval and yacht applications, as it can reduce weight by a factor of better than 20 times when compared to 8lb mineral wool. Soundown LCF should be considered as an important component of any weight savings programs designed to increase range or speed.

Soundown LCF foam meets the requirements of Lloyd’s High Speed Craft (as a fire resisting material) and has been accepted by MCA as not readily ignitable. Fire rating of faced and fabricated LCF products vary and are tailored to specific applications. Our knowledgeable staff can help recommend the best configuration depending on your acoustic, thermal, and class approval needs.

LCF is widely used aboard military vessels and meets the requirements of DOD-I-24688 Types, I, Type II class 1, and Class II type 2. It also is included on the qualified products list (QPL) as Mil-Dtl-24688 Class I and Class III type 1.

Facing Options

8842n 59m 2mil aluminum navy cloth amau

 Foam Material


Typical Physical Properties, Unfaced


Typical Acoustic Properties, Unfaced