Polymetalcarbosilane, and preparation method and application thereof

The invention relates to polymetalcarbosilane, and a preparation method and an application thereof. The structural formula of the polymetalcarbosilane is shown in the specification. In the formula, R is a methyl group, an ethyl group, a propyl group, a vinyl group, a chloromethyl group, a phenyl group or a phenylethyl group; M is Ti, Zr or Hf; and m is an integer not less than 1, n is an integer not less than 0, and Cp1 and Cp2 respectively represent a cyclopentadienyl group or a substituted cyclopentadienyl group. The method for generating polymetalcarbosilane through catalyzing an organosilane addition polymerization reaction by metallocene has the advantages of adjustability of the content of metals in polymer, simple reaction step, mild reaction conditions and low preparation cost. The polymetalcarbosilane undergoes heat treatment at above 1100DEG C in inert atmosphere to form highly pure SiC.MC diphase ceramic.