Diamine monomer with nitrogen heterocyclic ring and siloxane structure as well as preparation method and application of diamine monomer

The invention discloses a diamine monomer with a nitrogen heterocyclic ring and siloxane structure as well as a preparation method and application of the diamine monomer, and belongs to the field of functional polymer materials. The diamine monomer has a structural formula shown in the following formula (I): # imgabs0 #, and W is an organic group containing a nitrogen heterocyclic ring. A diamine monomer with a nitrogen heterocyclic ring and siloxane structure is introduced into a resin precursor, and then the photosensitive resin composition is prepared. The diamine monomer contains a nitrogen heterocyclic structure and can promote a dehydration cyclization reaction of a resin precursor, so that the curing temperature is reduced, the problem of insufficient imidization of the resin during low-temperature curing is solved, and meanwhile, the adhesiveness of the resin and a base material can be effectively improved due to the existence of a siloxane structure. In addition, the existence of N heteroatoms can re