Dynamic mechanical characterization and sustainability of polyurethane foam and natural fiber laminates
March 26-31, 2017
Lightweight materials are of incredible enthusiasm to transportation applications. Auxiliary weight diminishment straightforwardly converts into fuel sparing and expanded payload limit. Permeable materials can give huge weight sparing yet their applications are restricted by their low quality and modulus. Higher gas mileage prerequisites for cars have additionally pushed them to search for lighter weight materials, where syntactic foams are required to be helpful in a few segments. Hollow molecule filled composites, called syntactic foams, are additionally named closed cell foams. Encasing porosity inside thin hardened shells of particles gives fortifying impact to each void present in the materials microstructure. Such composites can be custom-made to have higher particular modulus than the polymer matrix and an abnormal state of vitality retention under compression. In our group we have fabricated a laminated composite with polyurethane foam sandwiched between glass/kenaf fibers for fabricating structural components for ballistic purpose in mass transit. Fabricated laminates possessed high strain ballistic impact. Sustainability study of fabricated laminates was done. Polyurethane foam was chemical depolymerised and recycled polyol based polyurethane syntactic foams were also fabricated by incorporating rubber particles into it and characterised for tensile strength and modulus, flexural strength and modulus. Composite fabricated from recycled polyol and rubber particles possessed excellent mechanical properties suitable for structural applications.
Krishnan Kanny, "Dynamic mechanical characterization and sustainability of polyurethane foam and natural fiber laminates" in "Syntactic and Composite Foams V", Gary M. Gladysz (Empyreus Solutions, LLC, USA) Krishan K. Chawla (University of Alabama at Birmingham, USA) Aldo R. Boccaccini (University of Erlangen-Nuremberg, Germany) Manabu Fukushima (National Institute of Advanced Industrial Science and Technology (AIST), Japan) Eds, ECI Symposium Series, (2017). https://dc.engconfintl.org/syntactic_composite_foams_v/14