Preparation and anti‐migration performance of ethylene propylene diene terpolymer composites modified with <scp>GO‐SiO₂</scp> hybrid nanomaterials

Abstract

Abstract The anti‐migration ethylene propylene diene terpolymer ( EPDM) inhibitor coating was prepared by using EPDM as a composite matrix and silicon‐functionalized graphene oxide ( GO‐SiO 2 ) as modifiers to prevent the migration of energetic plasticizers in propellants. The anti‐migration performance at different temperatures was analyzed by investigating the diffusion of dioctyl sebacate ( DOS ) using thermal analysis and immersion tests. After adding 1.0 wt% GO‐SiO 2 , the overall performance of the inhibitor coating was the best, and the concentration of DOS that migrated into the inhibitor coating at 30 °C was reduced from 45.1% to 38.8% (13.9% decrease). The results confirmed that the introduction of GO‐SiO 2 prevented the migration of dioctyl sebacate to the EPDM inhibitor coating. The scanning electron microscopy results showed that GO‐SiO 2 was well‐dispersed in the inhibitor coating, and the tensile strength increased from 1.80 to 2.11 MPa . Migration kinetics analysis showed that the anti‐migration performance was closely related to the crosslink density.