Enhancing Flame Retardancy and Smoke Suppression in EPDM Rubber Using Sepiolite-Based Systems

Area of Science:

• Materials Science
• Polymer Chemistry
• Environmental Science

Background:

• Ethylene-Propylene-Diene Monomer (EPDM) rubber combustion produces significant smoke, creating safety and environmental concerns.
• Traditional flame retardants are insufficient for current safety and environmental standards.
• There is a critical need for advanced flame retardants that also suppress smoke.

Purpose of the Study:

• To synthesize and evaluate novel flame-retardant and smoke-suppressing systems for EPDM rubber.
• To investigate the efficacy of sepiolite-based composite materials in enhancing EPDM's fire safety.
• To compare the performance of two specific systems, AEGS and PEGS, in EPDM composites.

Main Methods:

• Synthesis of two flame-retardant smoke suppression systems (AEGS and PEGS) using Enteromorpha (EN), graphene (GE), sepiolite (SEP), ammonium polyphosphate (APP), and/or piperazine pyrophosphate (PPAP).
• Incorporation of AEGS and PEGS into EPDM rubber to create composite materials.
• Comparative analysis of the flame-retardant and smoke suppression properties of the EPDM/AEGS and EPDM/PEGS composites.

Main Results:

• The developed AEGS and PEGS systems demonstrated significant flame-retardant and smoke-suppressing capabilities when applied to EPDM rubber.
• The porous structure of sepiolite was identified as a key factor in reducing smoke emissions from the EPDM composites.
• EPDM composites containing the novel systems exhibited improved fire safety characteristics compared to untreated EPDM.

Conclusions:

• The synthesized flame-retardant smoke suppression systems are effective in mitigating fire hazards associated with EPDM rubber.
• Sepiolite is a valuable component for developing advanced materials with enhanced smoke suppression properties.
• These findings offer a promising solution for improving the safety and environmental impact of EPDM applications.