the role of n,n-dimethylcyclohexylamine in automotive interior materials introduction the choice of automotive interior materials is crucial to the overall performance, comfort and safety of the car. n,n-dimethylcyclohexylamine (n,n-dimethylcyclohexylamine, referred to as dmcha) plays an indispensable role in automotive interior materials as an important chemical substance. this article will introduce in detail the chemical properties...