Automotive Interior Polyurethane Foam Odor Control and Mechanism Analysis+

Abstract

With the continuous improvement of consumers' requirements for air quality inside vehicles, polyurethane foam, as a key material for automotive interiors, has become a focus of industry attention due to its odor control. This article systematically analyzes the origin
of odor generation and the mechanism of VOCs release in polyurethane foam from three aspects: raw material characteristics, processing
technology, and the role of additives. By studying the odor contribution mechanisms of raw materials such as polyether polyols and isocyanates, the generation pathways of VOCs during processing are explored, and the principles of action of new additives such as modified
activated carbon and inorganic montmorillonite are analyzed. Technical paths for odor control, including raw material optimization, process parameter adjustment, and additive innovation, are proposed. The optimized process and additive combination can significantly reduce
the VOCs emission from foam products, ensuring that the odor level meets the VDA270 standard requirements. This study provides a
theoretical basis for the green manufacturing of automotive interior polyurethane foam and promotes the improvement of environmental
protection standards in the industry.