Tunable mechanical and acoustic properties of anisotropic magnetic polyurethane foams with different carbonyl iron powder magnetic particle contents

WANG Caiping; ZHANG Jiahua; WANG Xiaojie

doi:10.13801/j.cnki.fhclxb.20200401.001

Volume 37 Issue 12

Dec. 2020

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WANG Caiping, ZHANG Jiahua, WANG Xiaojie. Tunable mechanical and acoustic properties of anisotropic magnetic polyurethane foams with different carbonyl iron powder magnetic particle contents[J]. Acta Materiae Compositae Sinica, 2020, 37(12): 3102-3110. doi: 10.13801/j.cnki.fhclxb.20200401.001

Citation:

WANG Caiping, ZHANG Jiahua, WANG Xiaojie. Tunable mechanical and acoustic properties of anisotropic magnetic polyurethane foams with different carbonyl iron powder magnetic particle contents[J]. Acta Materiae Compositae Sinica, 2020, 37(12): 3102-3110. doi: 10.13801/j.cnki.fhclxb.20200401.001

Citation:

WANG Caiping, ZHANG Jiahua, WANG Xiaojie. Tunable mechanical and acoustic properties of anisotropic magnetic polyurethane foams with different carbonyl iron powder magnetic particle contents[J]. Acta Materiae Compositae Sinica, 2020, 37(12): 3102-3110. doi: 10.13801/j.cnki.fhclxb.20200401.001

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Tunable mechanical and acoustic properties of anisotropic magnetic polyurethane foams with different carbonyl iron powder magnetic particle contents

doi: 10.13801/j.cnki.fhclxb.20200401.001

WANG Caiping^1
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ZHANG Jiahua^{1, 2
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WANG Xiaojie^{1
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1.
Institute of Advanced Manufacturing Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Changzhou 213164, China
2.
College of Electronic and Mechanical Engineering, Nanjing Forestry University, Nanjing 210037, China

Received Date: 2020-01-07
Accepted Date: 2020-03-23

Available Online: 2020-04-01

Publish Date: 2020-12-15

Abstract

Abstract

Polyurethane foams (PUFs) have been widely used in aircrafts, vehicles and many other facilities for noise control. Magnetic polyurethane foams (MPUFs) are a new kind of smart foams whose mechanical and acoustic properties can be controlled by magnetic fields. In this paper, the anisotropic MPUFs was studied which were prepared by one-step full water foaming method with carbonyl iron powders (CIPs) magnetic particles. During the foaming process, the magnetic field was applied, and the CIPs were arrayed into a chain-like structure along the direction of the magnetic field. The movement of CIPs inside MPUFs under the magnetic field induces a change towards the mechanical and sound absorption properties. The influence of the external magnetic field on the mechanical properties and sound absorption properties of CIPs/MPUFs was investigated by experiments. The results show that under the magnetic field, the storage modulus and loss modulus of CIPs/MPUFs increase with the increase of CIPs content. The variation of the average sound absorption coefficient is between 1% and 7%. For the sample with 5wt% CIPs foamed under 200 mT, the increment of its average sound absorption coefficient under 1.5 A is 6.5%, which is maximum.
- anisotropic,
- external magnetic field,
- magnetic polyurethane foams,
- mechanical properties,
- acoustic properties
Long Abstrsct
Innovation Points

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References(20)

References

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