Monomer stabilizers are chemicals used to stabilize polymer monomers (i.e., unpolymerized monomer molecules). During the polymer preparation process, monomer stabilizers can help control the rate of polymerization, prevent unnecessary polymerization, and improve product quality and stability. These stabilizers can usually be achieved by inhibiting the generation of free radicals or other reactive intermediates. In the polymer industry, monomer stabilizers play an important role, helping to ensure the controllability of the production process and the stability of product quality.