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பொருள் அறிவியல் & பொறியியல் இதழ்

ஐ.எஸ்.எஸ்.என்: 2169-0022

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தொகுதி 10, பிரச்சினை 11 (2021)

ஆய்வுக் கட்டுரை

MMT/Vinyl ester GFRP / CFRP Nano Composites Using High Shear Mixing for Mechanical, Thermal and Fire Retardation Properties

Bommanna K, Radha H R

This paper reports a first time use of combination of ultrasonication and twin screw extrusion for dispersing Montmorillonite (MMT) nanoclay in vinylester resin matrix. Two sets of specimens of MMT/vinylester, namely, Type-1 using ultrasonication and Type-2 using combination of ultrasonication and twin screw extrusion were processed for comparative studies. XRD studies showed superior exfoliation of MMT in vinylester in Type-2 specimens compared to that of Type -1. DSC and TGA studies showed superior glass transition temperature and lower thermal degradation for Type-2. Based on these results, 4 wt % MMT/ vinylester / carbon and 4 wt % MMT / vinylester / glass specimens were fabricated using the combination of ultrasonication and screw extrusion. The addition of 4 wt % MMT to vinylester/carbon increased UTS by, flexural strength, interlaminar shear strength and impact strength and fire retardation behaviour. The fractured specimens were studied using SEM.

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