为了制备性能优异的高阻尼复合材料，将石油树脂C5与氯化丁基橡胶（CIIR）共混，制备高阻尼型石油树脂C5/CIIR复合材料，研究复合材料的力学性能和阻尼性能。结果表明：随着C5掺量的增加，复合材料的拉伸强度逐渐降低，而断裂伸长率逐渐增大，压缩永久变形不断增大，高阻尼橡胶复合材料中石油树脂C5掺量不应超过40%；石油树脂C5的加入提高了复合材料的阻尼性能。石油树脂C5掺量占CIIR质量的30%时可以制备综合性能较好的高阻尼型石油树脂C5/CIIR复合材料；与不加石油树脂C5的材料相比，此时虽然复合材料的拉伸强度降低，压缩永久变形增大，但是仍然满足相关标准要求；复合材料的断裂伸长率提高54.6%，损耗因子-温度曲线包容面积（A _T）提高了14.0%。

In order to prepare high-performance high damping composites, high damping petroleum resin C5/CIIR composites were prepared by blending petroleum resin C5 with chlorinated butyl rubber (CIIR), and the mechanical and damping properties of the composites were studied. The results show that with the increase of C5 content, the tensile strength of the composites gradually decreases, while the elongation at break gradually increases, and the compression permanent deformation continuously increases. Moreover, the content of petroleum resin C5 in high damping rubber composites should not exceed 40%. The addition of petroleum resin C5 improves the damping performance of composites. When the content of petroleum resin C5 accounts for 30% of the CIIR mass, a high damping petroleum resin C5/CIIR composites with good comprehensive performance can be prepared. Compared with the material without petroleum resin C5, although the tensile strength of the composites is reduced and the compression permanent deformation is increased, it still meets the relevant standard requirements. The elongation at break of composite materials is increased by 54.6%, and the enclosed area of loss factor-temperature curve (A _T) is increased by 14.0%.