This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Sustainable Polyurethane Composite with Coconut Fiber for NVH Applications
Technical Paper
2016-28-0143
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
With increasing growth of vehicular population, there is an increasing demand for raw materials. This has added strain to the available resources, which is becoming more and more unsustainable. As a result, search for sustainable materials are continuously happening in our industry and there is a strong focus from everyone to incorporate more and such materials. One way of doing so, is by blending naturally available materials like fibers, with polymers. In this study, naturally available Coconut fibers have been blended successfully with Polyurethane foam, thereby improving the green footprint of the vehicle. Coconut fibers are naturally occurring fiber extracted from the husk of the coconut. Polyurethane foam is the most versatile polymeric foam used in several places of automobile for reducing the Noise, Vibration & Harshness. The composite was manufactured using reaction injection molding technique by reacting polyol with iso-cyanide. The fiber were added to the chemicals before reaction. In this work, various ratio of fibers were added to the PU and were evaluated for basic mechanical properties like tensile strength, elongation, tear strength, dynamic durability and vehicle level tests. The effects of fiber length and fiber content on the physical properties of the composite were also studied. The results were compared with pure PU matrix without the fibers. The test results showed improvement in the physical properties, dynamic properties and accepted NVH behaviour. A ratio was finalized based on the best balance between properties and production feasibility. Subsequently the composite was validated in vehicle, which showed improvement over pure PU foam. Process for bulk production was finalized after production trails.
Topic
Citation
Krishnamoorthy, K. and Saishanker, V., "Sustainable Polyurethane Composite with Coconut Fiber for NVH Applications," SAE Technical Paper 2016-28-0143, 2016, https://doi.org/10.4271/2016-28-0143.Also In
References
- Ali , M. Coconut Fibre - A Versatile Material and its Applications in Engineering Presented at Second International conference on sustainable construction materials and technologies June 2010
- Yamashita , T. , Suzuki , K. , Adachi , H. et al Effect of Microscopic Internal Structure on Sound Absorption Properties of Polyurethane Foam by X-ray Computed Tomography Observations Materials Transactions 50 2 2009 373 380 10.2320/matertrans.MRA2008207
- Davis et al Polyurethane foam fiber composite United States Patent, Patent No.: 4683246
- ISO standard Flexible cellular polymeric materials -Determination of tensile strength and elongation at break 2008
- ASTM standard Standard Test Methods for Flexible Cellular Materials - Slab, Bonded, and Molded Urethane Foams 2011
- ASTM standard Standard Test Method for Compressive Properties Of Rigid Cellular Plastics 2010
- ASTM Standard Standard Test Method for Impedance and Absorption of Acoustical Materials Using a Tube, Two Microphones and a Digital Frequency Analysis System 2012