Flame retardant diglycidylphenylphosphate and diglycidyl ether of bisphenol-A resins containing Borassus fruit fiber composites
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Natural fiber composites containing diglycidylphenylphosphate (DGPP) resin were prepared from DGPP, diglycidyl ether of bisphenol-A (DGEBA), and Borassus fruit fiber. Morphology, thermal, and mechanical properties of blends and fiber-reinforced composites were investigated. The tensile strength, flexural strength, and tensile modulus increased up to 10% addition of DGPP and decreased with high percentage of DGPP. The flexural strength of composites was increased up to 15% addition of DGPP due to good dispersion and toughening of DGPP in DGEBA. As observed by the SEM analysis, the matrix–fiber adhesion was poor in the case of 20% DGPP containing composites and failure occurred through fiber pullout whereas for composites with 5 and 10% of DGPP, interaction of fiber and matrix was strong and failure occurred through fiber breakage rather than fiber pullout. Addition up to 15% DGPP improved desired thermal and mechanical properties of these composites.
KeywordsFlexural Strength Impact Strength Flame Retardant Fiber Composite Fire Retardant
The P.K gratefully acknowledges the financial support from Department of Science and Technology, New Delhi, India, under the SERC Scheme (Ref. Sanction No. SR/S1/PC-14/2003). P.S sincerely acknowledges the Council of Scientific and Industrial Research (CSIR), New Delhi, India, for the award of Senior Research Fellowship.
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