Novel ablation resistant additive (Li2Mn4)O(CO3)4·H2O and its application in silicone rubber.

This study shows the beneficial properties of using (Li 2 Mn 4)O(CO 3) 4 ·H 2 O (P–LiMn 2 O 4) as an anti-ablation additive in silicone rubber, effectively inhibiting ablation at all temperature ranges studied, indicating its potential as a valuable material. The experimental results show that P–LiMn 2 O 4 enhances the anti-ablation process of silicone rubber through several mechanisms, including dehydration, decarbonization, gas production, and solid-solid phase change. These mechanisms induce heat absorption, gas film formation and ceramic phase formation. Furthermore, P–LiMn 2 O 4 effectively improves the resistance of silicone rubber to ablation without compromising its mechanical properties. This study presents a method to enhance ablation resistance through multiple pathways, which can extend the application of phase change materials under extreme thermal conditions. [ABSTRACT FROM AUTHOR]