Low density polyurethane foam, applied in general assembly, is being used as a replacement for rubber-based heat reactive baffles in automobile cavities to inhibit noise transmittance. Most chemically reactive urethane foam systems used in barrier applications are MDI-based (diphenylmethane diisocyanate). The use of classical MDI-based technology in assembly plants typically requires substantial levels of ventilation [1]. High capital and operating expenses associated with plant ventilation systems have hindered the growth of polyurethane technology.This paper describes benefits of using a low MDI polyurethane foam system in place of classical two-component MDI-based foam systems and conventional rubber-based heat reactive baffles. Severe industrial hygiene testing has indicated that ventilation requirements to use the low MDI foam system in assembly plants may be greatly reduced. Information presented includes industrial hygiene testing results, acoustical performance, and physical/performance properties.
New Low MDI Polyurethane Foam System for Acoustical Barrier Applications in the Automotive Industry
Sae Technical Papers
SAE 2000 World Congress ; 2000
1999-05-17
Aufsatz (Konferenz)
Englisch
Foams , Acoustics , Noise , Assembling
SAE Technical Papers | 1994
|Rigid polyurethane foam in the automotive industry
Tema Archiv | 1974
|Polyurethane structural foam for automotive spoiler applications
Kraftfahrwesen | 1994
|