Chicken egg shells (ES) with 5%wt, 10%wt and 15%wt were incorporated and characterized as fillers in the production of flexible polyurethane foams. The results obtained were compared with conventional application of calcium carbonate (CaCO3). Physico-mechanical properties of the foam without fillers (unfilled), gave density of 20.87 kg/m3, compression set at room temperature (2.880C) and at higher temperature (70) had 3.960C, elongation at break (651.60%), tensile strength (112.10 KPa) and Indentation Force Deflection (hardness at 400C) was 187.20N. Subsequently, foams with 5% ES and 5% CaCO3 fillers depicted densities (21.72 and 21.50 kg/m3), compression set at room temperatures (3.66 and 3.450C), temperature at 700C (4.33 and 5.460C), elongation at break (312.70 and 328.50%), tensile strength (78.40 and 81.40 KPa) and Indentation Forces Deflections (Hardness at 400C) were 241.80 and 198N respectively. Foams with 10% CaCO3 and 10% ES also revealed densities of 21.68 and 21.80 kg/m3 respectively, Compression set at room temperature (6.96 and 4.120C), temperature at 700C (5.79 and 6.160C), elongation at break (359.50 and 362.40%), tensile strength (85.00 and 94.00 KPa) and Indentation Forces Deflections (Hardness at 400C) were 203.00 and 186.40N respectively. Consequently, 15% CaCO3 and 15% ES fillers depicted densities (22.14 and 22.39 kg/m3), compression set at room temperatures (5.24 and 3.030C), temperature at 700C (5.50 and 6.250C), elongation at break (383.10 and 397.50%), tensile strength (90.40 and 97.60 KPa) and Indentation Forces Deflections (Hardness at 400C) were 197.00 and 169.90N respectively. In all cases, the physcio-mechanical properties increased with increase in fillers weights. However, Eggshell-filled foams showed better quality in terms of density, compression set at room temperature, elongation at break and tensile strength than CaCO3-filled foams. Unfilled foams (foam without fillers) had the best compression set both at room temperature and intermediate temperature. All foam samples produced fell within the ASTM D-3574 set standard range of 1-10% for compression tests of polyurethane foams.
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