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Dynamic mechanical properties for polyurethane elastomers applied in elastomeric mortar

Authors

  • José Atílio Fritz Fidel Rocco,

    1. Departamento de Química do Instituto Tecnológico de Aeronáutica-ITA, Praça Mal. Eduardo Gomes, 50 Vila das Acácias, CEP 12228-901, São José dos Campos, Sao Paulo, Brasil
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  • José Eduardo Salgueiro Lima,

    1. Departamento de Química do Instituto Tecnológico de Aeronáutica-ITA, Praça Mal. Eduardo Gomes, 50 Vila das Acácias, CEP 12228-901, São José dos Campos, Sao Paulo, Brasil
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  • Vera Lúcia Lourenço,

    1. Divisão de Química do Instituto de Aeronáutica e Espaço-IAE, Praça Mal. Eduardo Gomes, 50 Vila das Acácias, CEP 12228-901, São José dos Campos, Sao Paulo, Brasil
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  • Natássia Lona Batista,

    1. Departamento de Química do Instituto Tecnológico de Aeronáutica-ITA, Praça Mal. Eduardo Gomes, 50 Vila das Acácias, CEP 12228-901, São José dos Campos, Sao Paulo, Brasil
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  • Edson Cocchieri Botelho,

    Corresponding author
    1. Departamento de Materiais e Tecnologia, Faculdade de Engenharia, UNESP, Av. Ariberto Pereira da Cunha 333, CEP 12500.000, Guaratinguetá, Sao Paulo, Brasil
    • Departamento de Materiais e Tecnologia, Faculdade de Engenharia, UNESP, Av. Ariberto Pereira da Cunha 333, CEP 12500.000, Guaratinguetá, Sao Paulo, Brasil
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  • Koshun Iha

    1. Departamento de Química do Instituto Tecnológico de Aeronáutica-ITA, Praça Mal. Eduardo Gomes, 50 Vila das Acácias, CEP 12228-901, São José dos Campos, Sao Paulo, Brasil
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Abstract

Dynamic mechanical properties of a polyurethane (PU) elastomer and a mortar processed with the same elastomer (modified polytetramethylene ether glycol (PTMEG)) were studied. The results obtained showed that the liquid aromatic amine ETHACURE® 300, used as cure agent, can be used to substitute the aromatic amine MOCA®, which is usually used as cure agent in high performance elastomers. The resulting mortar produced with ETHACURE® 300 presents similar dynamic-mechanical thermal properties when compared with MOCA ®. However, dynamic-mechanical thermal analysis studies showed that the mortar developed with ETHACURE® 300 presents some advantages such as the low values of tan δ, indicating a good capacity of recovery of the strain after retreating an applied force. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012

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