Enhancing Thermal Insulation of EPDM Ablators via Constructing Alternating Planar Architectures.

ABSTRACT: Ethylene-propylene-diene monomer (EPDM) composites were usually enhanced with ablative additives to protect solid rocket motor (SRMs) casings. However, the poor thermal insulation caused by the high thermal conductive ablative fillers can lead to rocket motor failure. Herein, the novel EPDM composites containing alternating layers of ablative EPDM (AM) and heat-insulated EPDM (HM) were prepared through layer-multiplying extrusion. Compared with conventional EPDM ablative material, the multilayer composites showed enhanced thermal insulation and mechanical properties that could be further improved by tuning the number of layers. The ablation and thermal insulation properties possessing in AM and HM layers could be combined by forced assembly during co-extrusion, and the alternating multilay

SUBMITTER: Qu H 

PROVIDER: S-EPMC9028349 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature