Phthalonitrile resin is a kind of high-performance and high-temperature resistant thermosetting resin terminated with the phthalonitrile structure

which has excellent thermal oxygen stability

flame retardancy

mechanical strength

low water absorption

low thermal expansion coefficient and dielectric constant. It can be used to prepare advanced composite matrix materials

coatings

adhesives

etc

.

and has been widely used in aviation technology

electronics

machinery

military and other fields. In this paper

the structures of phthalonitrile resin

the types of phthalonitrile monomer

curing agents

autocatalytic phthalonitrile

biological phthalonitrile and the modification methods of phthalonitrile resin were reviewed. The future research directions of phthalonitrile resin were prospected.