Crosslinked Energetic Binder Mechanical Strength

The patent changes the chemical composition parameters of the binder system by introducing a polyisocyanate crosslinking agent and a crosslinking catalyst. This creates a crosslinked polymer network that fundamentally alters the mechanical properties of the binder, allowing high strength without sacrificing energy performance. The crosslinking density and catalyst amount are optimized to achieve the desired balance between mechanical strength and energy characteristics.

The patent introduces a crosslinking catalyst as an intermediary substance that facilitates the crosslinking reaction between the polyisocyanate crosslinking agent and the binder polymer. The catalyst (typically metal-based compounds at 0.1-5 wt%) mediates the chemical reaction, enabling crosslinking to proceed under milder conditions with better control over the reaction kinetics. This intermediary approach allows for more manageable formulation complexity while achieving the desired mechanical enhancement.

The patent optimizes the amount of crosslinking catalyst within a specific range (0.1-5 wt% relative to the crosslinking agent) to achieve adequate mechanical strength at cold temperatures while suppressing unwanted side reactions. This parameter optimization balances the competing requirements of cold-temperature performance and formulation stability, preventing excessive crosslinking or decomposition that would compromise reliability.