Synergistic flame retardant effect of metal hydroxide and nanoclay in EVA composites

Synergistic effect of aluminum hydroxide and nanoclay on flame retardancy and mechanical properties of EPDM composites

“…The flatten top of the HRR curve for EPDM/ATH contrasting the sharp peak in HRR curve for EPDM indicates the formation of an aluminum oxide layer and the restriction of the combustion process. 18,19 At cone calorimeter measuring condition (heat flux of 50 kW/ m 2 ), the ignition times of the EPDM/ATH and EPDM/ATH/ nanoclay are similar in Figure 2(b), indicating the nanoclay does not decompose, and it accompanies the ATH in the latter ignition stage to promote the fire retardancy of the composite material. The same kind of phenomenon has been reported in literature.…”

“…15,18 Similar results have been obtained for other materials. 12,19 In Table II, the char yield at 600 C for EPDM/ATH/nanoclay composite is slightly higher than that of EPDM/ATH. The existence of a small amount of nanoclay (<6 wt %) would promote the production of char and cause the increase in the thermal stability of the EPDM composite.…”

“…7,8 The addition of the nanoclay into polymers has been identified that the composite can increase in some extent of thermal stability, flame retardancy, mechanical property, and the capability of smoke suppression. [12][13][14][15][16][17][18][19] Very limited studies have been done on the addition of the nanoclay into EPDM rubber as a flame retardant additive. 14,[20][21][22] Some aspects, like the best amount of the nanoclay, and some contrary facts in the flammability and smoke tests, deserve to be studied.…”

Effect of flame retardant fillers on the fire resistance and physical­mechanical properties of polymeric compositions

“…Research results have shown effectiveness of replacing magnesium hydroxide and aluminum hydroxide in the compositions of EVA with 1-2 % of nanoclay [8].…”

Synergistic effects of modified hydrotalcite on improving the fire resistance of ethylene vinyl acetate containing intumescent flame retardants

“…Ethylene vinyl acetate (EVA) copolymer is extensively used as an insulator in the wire, adhesive and cable industry due to its desirable physico‐chemical properties and its easy acceptance of additives . The ease of ignition and subsequent combustion with the release of large volumes of toxic smoke prohibits the application of EVA‐based materials .…”