Effect of the carbonyl iron particles on acoustic absorption properties of magnetic polyurethane foam

Jialu Geng; Caiping Wang; Honglang Zhu; Xiaojie Wang

doi:10.1117/12.2294518

22 March 2018 Effect of the carbonyl iron particles on acoustic absorption properties of magnetic polyurethane foam

Jialu Geng, Caiping Wang, Honglang Zhu, Xiaojie Wang

Proceedings Volume 10596, Behavior and Mechanics of Multifunctional Materials and Composites XII; 105961W (2018) https://doi.org/10.1117/12.2294518
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2018, Denver, Colorado, United States

Abstract

Elastomeric matrix embedded with magnetic micro-sized particles has magnetically controllable properties, which has been investigated extensively in the last decades. In this study we develop a new magnetically controllable elastomeric material for acoustic applications at lower frequencies. The soft polyurethane foam is used as matrix material due to its extraordinary elastic and acoustic absorption properties. One-step method is used to synthesize polyurethane foam, in which all components including polyether polyols 330N, MDI, deionized water, silicone oil, carbonyl iron particle (CIP) and catalyst are put into one container for curing. Changing any component can induce the change of polyurethane foam’s properties, such as physical and acoustic properties. The effect of the content of MDI on acoustic absorption is studied. The CIPs are aligned under extra magnetic field during the foaming process. And the property of polyurethane foam with aligned CIPs is also investigated. Scanning electron microscope (SEM) is used to observe the structure of pore and particle-chain. The two-microphone impedance tube and the transfer function method are used to test acoustic absorption property of the magnetic foams.

Citation Download Citation

Jialu Geng, Caiping Wang, Honglang Zhu, and Xiaojie Wang "Effect of the carbonyl iron particles on acoustic absorption properties of magnetic polyurethane foam", Proc. SPIE 10596, Behavior and Mechanics of Multifunctional Materials and Composites XII, 105961W (22 March 2018); https://doi.org/10.1117/12.2294518

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available