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    Vibro-acoustic products from re-cycled raw materials using a cold extrusion process. A continuous cold extrusion process has been developed to tailor a porous structure from polymeric waste, so that the final material possesses particular vibro-acoustic properties.

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    Chapter1.pdf (168.1Kb)
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    Chapter 2 (272.6Kb)
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    Chapter 3 (1.398Mb)
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    Chapter 4 (2.381Mb)
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    Chapter 5 (567.4Kb)
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    Chapter 6 (142.8Kb)
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    Chapter 7 (862.0Kb)
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    Chapter 8 (303.7Kb)
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    Contents (29.02Kb)
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    Abstract (9.404Kb)
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    Acknowledgements (9.104Kb)
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    List of Figures (40.09Kb)
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    List of Tables (26.77Kb)
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    Table of Notation (53.74Kb)
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    References (38.92Kb)
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    Publication date
    2010-05-07T11:32:02Z
    Author
    Khan, Amir
    Supervisor
    Horoshenkov, Kirill V.
    Benkreira, Hadj
    Keyword
    Re-cycling polymeric waste
    Cold extrusion
    Vibro-Acoustic materials
    Thermal insulation materials
    Acoustic insulation materials
    Porous polymeric materials
    Rights
    Creative Commons License
    The University of Bradford theses are licenced under a Creative Commons Licence.
    Institution
    University of Bradford
    Department
    School of Engineering, Design and Technology.
    Awarded
    2008
    
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    Abstract
    A cold extrusion process has been developed to tailor a porous structure from polymeric waste. The use of an extruder to manufacture acoustic materials from recycled waste is a novel idea and the author is not aware of any similar attempts. The extruder conveys and mixes the particulates with a reacting binder. The end result is the continuous production of bound particulates through which a controlled amount of carbon dioxide gas that is evolved during the reaction is used to give the desired acoustic properties. The cold extrusion process is a low energy consuming process that reprocesses the post manufacturing waste into new vibro-acoustic products that can be used to meet the growing public expectations for a quieter environment. The acoustical properties of the developed products are modelled using Pade approximation and Johnson-Champoux-Allard models. Applications for the developed products are widespread and include acoustic underlay, insulation and panels in buildings, noise barriers for motorways and railway tracks, acoustic insulation in commercial appliances and transport vehicles.
    URI
    http://hdl.handle.net/10454/4289
    Type
    Thesis
    Qualification name
    PhD
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    Theses

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