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Impact of Chemical Blowing Agent on Polypropylene Properties
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 01, 2021 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Event: International Conference on Advances in Design, Materials, Manufacturing and Surface Engineering for Mobility
Weight reduction in automotive applications have led to the processing of thermoplastic polymers by foam injection molding. The density of the foamed polymer can be reduced up to 20%. Whilst, work has been reported on the weight reduction of the foamed polymer by using different types of blowing agent technologies, there has been limited studies in the areas of the sound transmission loss and sound attenuation properties of these materials. The present study is intended to understand the effect of chemical blowing agent (CBA) on the properties of polypropylene. The molded specimens were characterized using density, Differential scanning colorimetry (DSC), Thermogravimetric analysis (TGA), Fourier transform infra-red spectroscopy (FT-IR) and sound transmission loss (STL) measurements. Specimens were also tested for tensile properties, flexural properties, Izod impact strength and Heat deflection temperature (HDT) as per standard test protocol. Cell structures were observed using stereo microscope. The obtained results indicated significant improvement in sound transmission loss at 3% and 5% chemical blowing agent dosage. This improvement was accompanied with a reduction in the density.
CitationShukla, S. and Balaji, K., "Impact of Chemical Blowing Agent on Polypropylene Properties," SAE Technical Paper 2021-28-0203, 2021, https://doi.org/10.4271/2021-28-0203.
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