Steady-state kinetics is a condition in a chemical reaction where the rate of formation of a reactive intermediate is equal to its rate of consumption. This means that the concentration of the intermediate remains constant over time. In polymerization, steady-state kinetics often applies to the concentration of growing chains in chain-growth polymerization. This assumption simplifies the kinetic equations and allows for easier analysis of the polymerization process.

稳态动力学是化学反应中的一种状态，其中活性中间体的形成速率等于其消耗速率。这意味着中间体的浓度随时间保持恒定。在聚合中，稳态动力学通常适用于链增长聚合中增长链的浓度。这种假设简化了动力学方程，并允许更容易地分析聚合过程。