Two-dimensional heat pipe and heat exchanger

The two-dimensional heat pipe comprises a heat pipe base body, the heat pipe base body comprises a condensation section and an evaporation section, a protrusion, a first coating and a second coating are arranged on the inner wall of the heat pipe base body, and the second coating is located at the joint of the protrusion and the inner wall and covers the protrusion by a certain distance in the length direction of the heat pipe. A first coating is arranged on the inner wall without the second coating and the surfaces of the protrusions, and coating materials of the first coating and the second coating have different friction coefficients. The purpose of automatically removing fine particles on the wall of the heat pipe is achieved, it can be guaranteed that equipment applying the heat pipe heat dissipation device has reliable heat dissipation performance for a long time, and the economic problem and the time problem caused by heat pipe replacement can be avoided. Therefore, the method has the advantages of bei