| 摘要 |
A precursor composition includes: (1) at least one cross-linking compound represented by formula (I) wherein: u and x are independently selected positive integers, v and w are independently selected integers greater than or equal to zero, R1, R2, R3, R4, R5, R6, R7 and R8 are independently selected from the group consisting of alkyl, aryl, alkylaryl, haloalkyl, haloaryl, and mixtures thereof; A and E are independently selected from the group consisting of O, an aliphatic bridge, an aryl bridge and mixtures thereof; and R9 and R10 are unsubstituted or substituted vinyl or ethynyl groups; (2) at least one organosilicon compound containing at least two silicon hybride moieties per molecule, and (3) a hydrosilation catalyst. A cross-linked polymer is formed by reacting the cross-linking compound of formula (I) with the organosilicon compound via a hydrosilation reaction. A thermoset polymer is formed by thermally curing the cross-linked polymer. A boron-carbon-silicon ceramic formed by pyrolyzing the cross-linked polymer.
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