| Study on High Damping Compound Formulation for Building Isolation Bearing |
| Received:July 02, 2021 Revised:July 02, 2021 |
| DOI：10.12136/j.issn.1000-890X.2021.11.0843 |
| Key Words: high damping compound；building isolation bearing；compound formulation；NR；BIIR；equivalent damping ratio |
| Author Name | Affiliation | E-mail | | LUO Mingming* | Qingdao Agricultural University | 57075404@qq.com |
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| Abstract: |
| The high damping compound for building isolation bearings was prepared with natural
rubber（NR）/brominated butyl rubber（BIIR） blend as the main material，and the effects of NR/BIIR
blending ratio，the type and dosage of carbon black and tackifier type on the properties of the compounds
were investigated. The results showed that，the equivalent damping ratio of the compound was improved
with the decrease of the NR/BIIR blending ratio，for example，by increasing the dosage of BIIR，but the
strength and deformation ability of the compound were reduced. Selecting carbon black N220 which had
high specific surface area and increasing its dosage could effectively improve the equivalent damping ratio of
the compound. However，when the dosage of the carbon black increased to a certain extent，the strength and
deformation ability of the compound would decrease rapidly. The type of resin tackifier had little effect on
the properties of the compound，but phenol acetylene resin would reduce the equivalent damping ratio of the
compound. |
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