3M™ Thinsulate™ High Temperature Acoustic Absorber HT500C

Automotive Noise Reduction at High Temperatures
Featuring advanced fiber technology, 3M™ Thinsulate™ High Temperature Acoustic Absorber HT500C (PDF, 299.41 Kb) is designed for durable automotive NVH reduction in high-temperature environments such as automotive engine compartment applications. This material is designed and tested to withstand temperatures up to 302°F/150°C for 336 hours or 356°F/180°C for 48 hours. Its internal polyester web is designed specifically to absorb vibration and help reduce unwanted noise from traveling throughout vehicles, and its black external scrim resists common engine fluids. The material can be die-cut into complex shapes and configurations.

Properties of 3M™ Thinsulate™ Acoustic Absorber HT500C
Thinsulate High Temperature Acoustic Absorber HT500C features an overall thickness of 23 mm and a basis weight of 568 g/m2. Non-irritating fiber material won't produce dust during processing or installation and doesn't require any special handling. The fiber web is hydrophobic, meaning it resists moisture and greatly reduces the chance for mold and mildew to develop over time. The black scrim designed for to resist fluids and to give a finished appearance that integrates well into the engine compartment.

Highly Convertible for Design Freedom
Easily processed by conventional techniques such as die-cutting, our Thinsulate High Temperature Acoustic Absorber HT500C can be converted into a wide range of shapes and configurations to fit OEM and Tier application needs. It attaches to many substrates using conventional clips, heat staking or ultrasonic welding.

Recommended Applications:

• Automotive underhood
• Engine under covers and beauty covers
• Battery covers
• Hoodliners
• Front of dash panels

The Science Behind Noise Absorption with Thinsulate Products
All sound is transmitted through physical vibrations. Where many acoustic insulation products act as a damper or a barrier that simply blocks the transmission of these vibrations from a source to other locations, our Thinsulate acoustic absorbers and insulation are engineered to absorb them instead. Tiny fibers are manufactured to exact diameters and assembled into a web. As physical vibrations pass through this web, it essentially tunes them to differing frequencies. This absorption process converts vibration from physical energy — which causes noise and discomfort — into heat, which dissipates quickly and quietly. The result is a quieter, smoother, more comfortable space inside the vehicle cabin, and another example of how 3M applies science to life.