Boron-modified phenolic resin composites are critical aerospace thermal protection materials due to their ability to form boron-containing ceramic layers during ablation, which provides exceptional ablation resistance. This article systematically reviews recent research progress on boron-modified phenolic resin ablation-resistant composites from two primary design perspectives. Firstly, from the perspective of the resin matrix level, strategies for chemically bonding boron elements to phenolic resins are summarized. Using boron-containing compounds like boric acid or phenylboronic acid introduces high-bond-energy BO bonds, fundamentally enhancing the resin’s thermal stability and performance under extreme conditions. Building on this, introducing boron-containing ceramic precursors into phenolic resins can further optimize their ablation resistance and high-temperature performance.
Pour en savoir plus : Research Progress on Boron-Modified Phenolic Resin Ablation-Resistant Composites
