The effect of zinc oxide nanoparticles on thermo-physical properties of diglycidyl ether of bisphenol A/2,2′-Diamino-1,1′-binaphthalene nanocomposites

Cuprous oxide nanoparticles in epoxy network: Cure reaction, morphology, and thermal stability

“…The larger area of the exotherm refers to a faster conversion, which in turn denotes that the presence of nCOP which facilitates the cross linking process of epoxy at a faster rate. The increase of the heat of reaction relative to neat polymer also emphasizes the higher crosslinking density in the nanocomposites as reported in literature . For concentrations > 5 phr, the reaction heat decreases as nCOP distribution becomes more heterogeneous at these stages.…”

“…This is a substantial evidence for the mutual dependence catalytic efficiency of nanofillers and its number of parts inside the composite material. Zabihi et al reported similar results based on investigations using ZnO nanofiller on the curing reaction of epoxy and concluded that the reaction heat of the sample having 5 phr ZnO nanoparticles was higher than that of the others. More recently Karasinski et al reported similar results where they have discussed the catalytic effect of different (zinc oxide and aluminum oxide) nanoparticles in the epoxy‐amine reaction and found that even 3% of Al 2 O 3 or ZnO nanoparticles could induce meaningful changes on the matrix cure reaction.…”

Investigation of metal xanthates as latent curing catalysts for epoxy resin via formation of in-situ metal sulfides

“…Curing is defined as transformation of low molecular epoxy oligomer into a highly cross-linked polymeric network achieved by utilizing curing agents 22 . Due to high commercial significance, cure processing conditions and curing agents have been receiving tremendous scientific pursuit 23 . Conventional curing agents consisting of Lewis acids 24 and bases 25 are reported to have restricted application potential due to instigation of curing even at ambient conditions 26 thereby reducing the shelf-life 27 of the formulated composite mixture.…”

Copper oxide nanoparticles in an epoxy network: microstructure, chain confinement and mechanical behaviour

“…Even though the previous research works display the extensive use of particulate fillers in imparting multifunctional capability to polymeric matrices, the mechanism of reinforcement has not been well understood and the issue is being still debated among polymer physics community. [11][12][13][14][15][16][17][18][19][20][21][22] One among the strong arguments is the 'percolation concept' in which the filler particles/domains percolate through the system, resulting in a direct pathway for the propagation of stress which in turn can lead to the mechanical reinforcement of host matrix. [23][24][25][26] In contrast to this "particle-only" scenario, other arguments involve both the fillers and polymer chains.…”