Work

The Effect of Metal Oxide and Polycarbosilane on Flame Retardancy and Combustion Behavior of Eva/MH Composites

Year: 2025

Type: article

Abstract: ABSTRACT Low smoke halogen‐free flame retardant ethylene‐vinyl acetate copolymer (EVA) composites with magnesium hydroxide (MH) as a flame retardant have been widely used in wire and cable, electrical equipment, and other fields; however, the overall performance of the composites is very difficult to regulate due to the low flame retardancy of MH. In this work, the metal oxides (ferric oxide Fe2O3 and nickel oxide NiO) together with polycarbosilane, were added in EVA/MH composites; the flame retardancy and combustion behaviors were evaluated, and the thermal degradation behavior and the gaseous product of the composites were studied. The results show that Fe2O3 or NiO, together with PCS, exhibits a synergistic effect in EVA/MH composites; the oxygen index increased by 154.9% and 135.3%, respectively, and the total heat release decreased by 20.4% and 11.3%, respectively. The synergistic effect between metal oxide and PCS is well reflected in the combustion process of the composites; the suppression of combustion depends on the further improved barrier effect of the residue by metal oxide.

Source: Journal of Applied Polymer Science

DOI: 10.1002/app.57043

Authors: Tiefeng Zhang, Chunfeng Wang, Ruitian Bo, Zhidong Han

Institutions: Harbin University of Commerce, Harbin University of Science and Technology

Language: English

Topic: Flame retardant materials and properties

Subfield: Polymers and Plastics

Field: Materials Science

Domain: Physical Sciences

Open Access status: bronze

Funder: Natural Science Foundation of Heilongjiang Province

Award: G5480717537