Polyurethane filled graphene nanoplatelets foam nanocomposites for sound absorption and heat resistance

Mohd Sapeli, Ahmad Zulfadhli (2018) Polyurethane filled graphene nanoplatelets foam nanocomposites for sound absorption and heat resistance. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Polyurethane (PU) foams are producing by the mixture of Polyoil (part A) and an isocyanate (MDI) (part B) in the ratio of 1: 0.25. The purpose of the research is to introducing the way of developing PU foams reinforced with graphene nanoplatelets (GNPs). GNPs itself is capable to provide and improve the physical and thermal properties of the produced sample. The preparation of PU/GNPs involving ultrasonication and solution compounding methods. The procedures of the preparation involving different GNPs loading (0.00 wt%, 0.25 wt%, 0.50 wt%, 0.75 wt%, 1.00 wt%). The best optimum composition will be critical and important in determine the mechanical and thermal properties of PU/GNPs nanocomposites foams by relate to the sound absorption and heat resistance testing. Lastly, surface morphologies of PU/GNPs will be analysed further and detail by using SEM observation tools. The testing is important to find at which composition is the most suitable to improve the sound absorption and heat resistance application of the PU/GNPs nanocomposites foams. The results from sound absorption test show that 0.75 wt% of GNPs addition show the best absorption coefficient towards the PU/GNPs nanocomposites foams which the absorption coefficient show 0.7610 out of 1.000. The research also applicable to control thermal improvement of the PU/GNPs nanocomposites foams. Besides, addition of GNPs into the sample will significantly improve the heat resistance as it will residue about 38 % with the 1.00 wt% of GNPs and heat flow also will increase as well as with the increasing of GNPs values. This show that GNPs can be new advance nanomaterial and improve properties of the nanocomposites foams.

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