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Investigation on mechanical, thermal, and flame retardant properties of particulate SiO 2 reinforced cardanol based composites
Author(s) -
Thenmozhi Sivalingam,
Murugavel Salem Chandrasekaran
Publication year - 2020
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.25443
Subject(s) - materials science , thermogravimetric analysis , composite material , cardanol , epoxy , composite number , thermal stability , fire retardant , differential scanning calorimetry , curing (chemistry) , thermosetting polymer , chemical engineering , physics , engineering , thermodynamics
Cardanol based epoxy thermosets and particulate SiO 2 incorporated composite systems were developed by blending various ratios of commercial diglycidyl ethers of bisphenol‐A (DGEBA) with epoxidized cardanol (EPC) using melt mixing method followed by sonication. Physico chemical properties of the prepared resins were studied. Various percentage of SiO 2 was incorporated in to the resin system [15% EPC + 85% DGEBA] (BEPC1)] to improve their thermo mechanical properties. The effect of loading content on the curing behavior, mechanical, and thermal properties were investigated by FT‐IR, mechanical tests, differential scanning calorimetry, and thermogravimetric analysis (TGA). Particle size and dispersion probability of SiO 2 in the composites were studied by field emission scanning electron microscope. These studies showed that 1% SiO 2 reinforced BEPC1 matrix system were effective in enhancing mechanical strength and thermal stability of composites. The prominent char residue value obtained in the TGA analysis predicted the good flame retardant property of the developed composite. This was evidenced in UL‐94 test and limited oxygen index (LOI) determination.