Nonmetal gasoline antiknock agent and preparation method thereof

The invention provides a nonmetal gasoline antiknock agent and a preparation method thereof. The nonmetal gasoline antiknock agent comprises the following raw materials in parts by weight: 30-80 parts of N-methyl formamide, 2-8 parts of methyl tertiary butyl ether, 2-15 parts of 1-nitropropane, 5-20 parts of glycerol tripalmitate, 3-18 parts of nonyl phenol polyoxyethylene ether and 2-8 parts of a cosolvent. The cosolvent is methyl ethyl ketone, 2-naphthyl amine and 1,5-dimethyl hexyl amine. According to the nonmetal gasoline antiknock agent disclosed by the invention, the raw materials are scientifically compounded, have better compatibility and synergistically play a role, so that the purpose of improving the antiknock property of gasoline is achieved, sufficient combustion of gasoline is promoted, combustion carbon deposit in a cylinder is effectively eliminated, the combustion efficiency of gasoline is improved, and the requirements of refinery enterprises for blending international gasoline by using naph