Study on carbonization process of coal tar pitch modified thermoplastic phenolic resin

In order to improve the carbon residual ratio of phenolic resin and optimize the structure and properties of its pyrolytic carbon, different quality coal tar pitches are added to the thermoplastic phenolic resin. Thereby, a coal tar pitch modified phenolic resin is obtained. After curing at 220°C, it is carbonized for 3 h under different conditions and test its carbon residue rate. The structure was characterized by SEM scanning electron microscopy. The results show that: 1) Coal tar pitch modified phenolic resin at a temperature of 900°C, the heating rate of carbonization is 10°C/min, and the addition of modifier is 10%, carbonization is the best process conditions for the formation of graphene. 2) Charging is the best process condition for carbon nanotubes formation at a temperature of 1100°C, a carbonization heating rate of 10°C/min, and a modifier addition of 25%.