Novel low-temperature co-curing high-damping composite material and preparation method thereof

The invention discloses a novel low-temperature co-curing high-damping composite material and a preparation method thereof. The preparation method comprises the following steps: (1) mixing rubber with a mercapto compound to obtain a viscoelastic material; (2) cutting fiber cloth into a required size, and brushing the viscous-elastic material prepared in the step (1) on two sides of the fiber cloth by adopting a double-side brushing method to prepare prepreg fiber cloth of which the two sides are brushed with the viscous-elastic material; (3) preparing prepreg fiber cloth containing an epoxy resin mixture; and (4) spraying a release agent on a metal template, sequentially laying the prepreg fiber cloth of which the two sides are coated with the viscous-elastic materials and prepared in the step (2) and the prepreg fiber cloth containing the epoxy resin mixture and prepared in the step (3) on a lower metal template, and performing hot-pressing curing to obtain the low-temperature co-curing high-damping composit