Publication Type:

Journal Article

Source:

Plastics, Rubber and Composites, Taylor and Francis Ltd., Volume 48, Number 8, p.356-363 (2019)

URL:

https://www2.scopus.com/inward/record.uri?eid=2-s2.0-85067702731&doi=10.1080%2f14658011.2019.1630200&partnerID=40&md5=29c4bd00758bf689e050883b3e1e3ed8

Keywords:

Activation energy, degradation, degradation kinetics, Dielectric Properties, Dielectric properties of solids, Ethers, Flame resistance, Foams, Glass transition, Heat resistance, High heat resistance, High-glass transition temperatures, kinetics, Low dielectric constants, Low thermal conductivity, Nano-silica, Nanocomposites, phase separation, Polymeric glass, Silica, Smoke, Solvents, Thermal conductivity, Thermal conductivity of solids, Thermal degradation kinetics, Thermogravimetric analysis, Vapor-induced phase separation

Abstract:

In this paper, polyether imide (PEI) having properties such as a high glass transition temperature of 216°C, high heat resistance, high flame resistance, low smoke generation and a high melting point within the range of 400°C, having low thermal conductivity and low dielectric constant was chosen to be a polymeric foam. Water vapor-induced phase separation method was used to prepare PEI foams. PEI foams were reinforced with nano-silica (weight 1, 3 and 5%) in order to alter the dielectric properties, thermal conductivity and degradation kinetics of foamed polymer. The tested samples showed a reduction in dielectric constant than that of solid PEI but at a higher loading, it showed a higher value due to threshold percolation and a reduction in thermal conductivity was observed for foamed PEI. From thermogravimetric analysis, we can conclude that PEI with 3% filler loading showed better thermal stability compared to other PEI foam compositions. © 2019, © 2019 Institute of Materials, Minerals and Mining Published by Taylor & Francis on behalf of the Institute.

Notes:

cited By 0

Cite this Research Publication

S. Dastakeer, Saminathan, P., Venkatesan, S., Sudha, P. G., and Kannan, M., “Studies on thermal degradation kinetics and dielectric properties of polyether imide foam/nanosilica-based nanocomposites”, Plastics, Rubber and Composites, vol. 48, pp. 356-363, 2019.