Evaluation of mechanical and thermal properties of tamarind seed filler reinforced vinyl ester composites

Abstract

This article deals with the usage of tamarind seed filler (TSF) as reinforcement in vinyl ester (VE) composites. The composite plates have been fabricated by compression molding machine with TSFs of varying wt% from 5 to 50 as reinforcement material, and their properties such as tensile, flexural, impact, hardness, water absorption, heat deflection tests, and thermogravimetric analysis are studied. The mechanical properties of TSF reinforced VE composites are optimum at 15 wt% filler. The tensile strength and flexural strength of TSF‐VE composites are estimated to be around 34.1 and 121 MPa, respectively. The better impact strength of TSF‐VE composites is found to be 14.02 kJ/m2, and barcol hardness can hold a value up to 42.33. Thermo gravimetric analysis and heat deflection test of TSF reinforced VE composite have improved the thermal stability. The fiber matrix interaction of the fractured mechanical testing specimen has been analyzed by scanning electron microscope. The TSF‐VE composites are used to fabricate the wheel hubcap of heavy‐duty buses, bus seat backrest cover, and silencer guard of the motorcycle. J. VINYL ADDIT. TECHNOL., 25:E114–E128, 2019. © 2019 Society of Plastics Engineers

Physico‐mechanical properties of tamarind pod shell‐based composite

“…[60] It was observed that microhardness increased with the addition of TPS particles into the matrix. A similar observation was also made by previous researchers in case of tamarind seed, [18] walnut shell, [61] rice husk, [62] coconut shell, [16,63] and hazelnut shell [64] particles. The lowest value of hardness of the matrix before reinforcement was 21.04 HV.…”

“…Results showed that maximum values of mechanical properties were obtained for 15 wt% of rice husk and walnut shell content. Stalin et al [18] developed the composite using tamarind seed as a filler in the vinyl ester matrix. The mechanical and thermal properties of the composite were examined.…”

Effect of cellulosic filler loading on mechanical and thermal properties of date palm seed/vinyl ester composites

“…Moreover, the tamarind seed filler reinforced vinyl ester composite has been investigated in the recent work of Stalin et al [17]. The results have shown that addition of tamarind seed filler increased the impact, tensile and flexural strengths by 21.5%, 39% and 55%, respectively.…”

“…Finally, they were dried in an oven for 24 hours at 60 o C. The dried seeds were milled in a ball mill, and an excellent morphology of 30 -60 µm was obtained and therefore, ready to be used as a reinforcement. Commercially available industrial bisphenol-A-epoxy vinyl ester resin (styrene -45%) with a density of 1.145 g/cm 3 [17]. Without any treatment, vinyl ester resin was used as a matrix.…”

“…The impact strength was evaluated using the Charpy test method in accordance with ASTM D-256 (65 x 13 x 3 mm) standard [15]. Also, hardness was measured using Barcol Hardness tester (Model: VBH2), according to ASTM 2583 standard [17].…”