Phenolic epoxy acronyms are notable for their durability and chemical stability: The penetration of phenolic epoxy hardeners cures them. The hardener undergoes reaction with epoxy groups in phenolic resins, therefore intercrossing a polymer network. as a result, the product obtained is capable of exceptional thermal stabilities and can withstand very high temperatures without degrading. In addition, the cured epoxy is resistant to the severe chemical environment found in oil refineries, chemical processing plants, and even high-temperature insulation materials; phenolic epoxy hardener improves its chemical stability.