Robustness analysis of dynamic properties of polyurethane damping materials based on multi-index control

SU Yi; LI Ting; LI Aiqun

doi:10.13801/j.cnki.fhclxb.20200825.001

Volume 38 Issue 6

Jun. 2021

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SU Yi, LI Ting, LI Aiqun. Robustness analysis of dynamic properties of polyurethane damping materials based on multi-index control[J]. Acta Materiae Compositae Sinica, 2021, 38(6): 1859-1869. doi: 10.13801/j.cnki.fhclxb.20200825.001

Citation:

SU Yi, LI Ting, LI Aiqun. Robustness analysis of dynamic properties of polyurethane damping materials based on multi-index control[J]. Acta Materiae Compositae Sinica, 2021, 38(6): 1859-1869. doi: 10.13801/j.cnki.fhclxb.20200825.001

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Robustness analysis of dynamic properties of polyurethane damping materials based on multi-index control

doi: 10.13801/j.cnki.fhclxb.20200825.001

SU Yi^{1
,
,},
LI Ting^2
,,
LI Aiqun^{2, 3
,}

1.
Civil Engineering, Nanjing Forestry University, Nanjing 210037, China
2.
Civil Engineering, Southeast University, Nanjing 210096, China
3.
Beijing University of Civil Engineering and Architecture, Beijing 100044, China

Received Date: 2020-06-11
Accepted Date: 2020-08-13

Available Online: 2020-08-25

Publish Date: 2021-06-23

Abstract

Abstract

The isolation devices and dampers in architectural structure have large force and deformation under strong earthquake or wind, which requires high damping coefficient of damping material, suitable temperature matching with outdoor environment, and large damping temperature range. Currently, polyurethane damping materials are difficult to satisfy the above-mentioned performance indexes simultaneously, therefore they can not be widely used in structure engineering. In this paper, glass fiber, graphene, tetra-needle like ZnO whiskers (T-ZnOw) and hindered phenol were selected to improve the damping, mechanical properties and temperature properties. Through orthogonal design, polyurethane with different additions were prepared. And the robustness of loss peak value (tanδ_max), damping temperature range (ΔT_0.5) and glass transition temperature (T_g) were analyzed based on the dynamic thermomechanical analysis (DMA) test. According to the degree of importance of each index, weight assignment was carried out. The optimization scheme was obtained based on analytic hierarchy process (AHP), which is a multi-index weighting evaluation method. The validation test shows that tanδ_max is 1.24, ΔT_0.5 is 57℃, and T_g is 21.8℃.Compared with the initial group, the improvement rate of tanδ_max reaches 16.98 %, and the improvement rate of ΔT_0.5 reaches 46.91 %.
- polyurethane,
- Taguchi method,
- robustness analysis,
- variance analysis,
- damping performance
Long Abstrsct
Innovation Points

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References(23)

References

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