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Flame retardancy, Thermal and mechanical properties of Kenaf fiber reinforced Unsaturated polyester/Phenolic composite

Marliana, M. M. and Hassan, A. and Yuziah, M. Y. N. and Khalil, H. P. S. A. and Inuwa, I. M. and Syakir, M. I. and Haafiz, M. K. M. (2016) Flame retardancy, Thermal and mechanical properties of Kenaf fiber reinforced Unsaturated polyester/Phenolic composite. Fibers and Polymers, 17 (6). pp. 902-909. ISSN 1229-9197

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Abstract

Unsaturated polyester (UP) resin has been blended with phenolic resin (PF) resole type at various ratios to obtain a homogeneous blend with improved flame resistance compared to its parent polymers. The polymer blend was reinforced with 20 wt% kenaf using hand lay out technique. Fourier transform infrared spectroscopy (FT-IR) was used to characterize changes in the chemical structure of the synthesized composites. The thermal properties of the composites were investigated using thermogravimetric analysis (TGA). The thermal stability of UP/PF kenaf composites co-varies with the PF content, as shown by the degradation temperature at 50 % weight loss. The char yield of the composites increases linearly with PF content as shown by the TGA results. The flammability properties of the composites were determined using the limiting oxygen index (LOI) and UL-94 fire tests. The LOI increased with the PF content while the composites exhibit improved flame retardancy as demonstrated by UL-94 test. The mechanical and morphological properties of the composites were determined by tensile test and scanning electron microscopy (SEM), respectively. The tensile strength and the Young’s modulus of the blend/composites slightly decreased with increasing PF content albeit higher than PF/kenaf fiber composites.

Item Type:Article
Uncontrolled Keywords:Blending, Flame resistance, Flammability testing, Fourier transform infrared spectroscopy, Hemp, Mechanical properties, Phenolic resins, Polyester resins, Polymer blends, Reinforcement, Resins, Scanning electron microscopy, Tensile strength, Tensile testing, Thermodynamic stability, Thermogravimetric analysis, Degradation temperatures, Flame-retardance, Fourier transform infra red (FTIR) spectroscopy, Kenaf, Morphological properties, Thermal and mechanical properties, Unsaturated polyester, Unsaturated polyester resin, Unsaturated polymers
Subjects:T Technology > TP Chemical technology
Divisions:Chemical Engineering
ID Code:72481
Deposited By: Narimah Nawil
Deposited On:26 Nov 2017 03:37
Last Modified:26 Nov 2017 03:37

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