Polycarbosilane and method of producing the same

A method of producing polycarbosilane, comprising:

• dispersing metal sodium in an organic solvent;
• pre-mixing an allylmethyldichlorosilane monomer with a phenylmethyldichlorosilane monomer, and injecting the mixed monomer solution into the solution in which the metal sodium is dispersed;
• polymerizing polyallylphenylsilane by reaction of the mixed solution of the monomers and the metal sodium at 90 to 130° C.;
• separating a precipitate of the polymerized polyallylphenylsilane;
• performing a first conversion reaction on the separated polyallylphenylsilane precipitate under 5 to 30 atm at 300 to 370° C. for 5 to 20 hours;
• and
• performing a second conversion reaction on the resulting product under 5 to 30 atm at 400 to 470° C. for 5 to 20 hours,
• wherein the operations are performed in an inert gas atmosphere.