Evaluation of char strength of polymer nanocomposites for propulsion systems

Hugo Redondo, Madhur Atreya, Michelle Kan, Joseph H. Koo

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    • 2 Citations

    Abstract

    The aim of this project is to develop a testing protocol to measure the strength of the char layer of internal insulation materials for solid rocket motors. The development of this protocol is an unexplored area of materials testing that can result in valuable insights for thermal protection applications. The mechanical properties of the char pose several challenges that prevent the usage of traditional testing methods. The fragileness of the char impedes the use of hardness testing, where plastic deformation can be used to measure properties. In the present phase of development, a prototype has been created to evaluate the protocol. The testing involves a measurement of the forces during penetration of the char layer. These forces are then analyzed and compared to previous tests to quantify the performance of the polymers being tested. Conclusions derived from the testing of a family of thermoplastic polyurethane elastomer nanocomposites (TPUNs) can lead to the replacement of state-of-the-art Kevlar®-filled EPDM rubber as internal insulation materials for use in solid rocket motors. The main advantages of using TPUNs are the materials are recyclable and easier to manufacture as compared to the Kevlar®-EPDM rubber.

    LanguageEnglish (US)
    Title of host publicationSAMPE 2010 Conference and Exhibition "New Materials and Processes for a New Economy"
    StatePublished - Dec 2 2010
    EventSAMPE 2010 Conference and Exhibition "New Materials and Processes for a New Economy" - Seattle, WA, United States
    Duration: May 17 2010May 20 2010

    Other

    OtherSAMPE 2010 Conference and Exhibition "New Materials and Processes for a New Economy"
    CountryUnited States
    CitySeattle, WA
    Period5/17/105/20/10

    Fingerprint

    Propulsion
    Nanocomposites
    Polymers
    Elastomers
    Polyurethanes
    Rubber
    Rocket engines
    Testing
    Thermoplastics
    Insulation
    Hardness testing
    Materials testing
    Plastic deformation
    Mechanical properties

    ASJC Scopus subject areas

    • Mechanical Engineering
    • Mechanics of Materials
    • Materials Science(all)

    Cite this

    Redondo, H., Atreya, M., Kan, M., & Koo, J. H. (2010). Evaluation of char strength of polymer nanocomposites for propulsion systems. In SAMPE 2010 Conference and Exhibition "New Materials and Processes for a New Economy"

    Evaluation of char strength of polymer nanocomposites for propulsion systems. / Redondo, Hugo; Atreya, Madhur; Kan, Michelle; Koo, Joseph H.

    SAMPE 2010 Conference and Exhibition "New Materials and Processes for a New Economy". 2010.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Redondo, H, Atreya, M, Kan, M & Koo, JH 2010, Evaluation of char strength of polymer nanocomposites for propulsion systems. in SAMPE 2010 Conference and Exhibition "New Materials and Processes for a New Economy". SAMPE 2010 Conference and Exhibition "New Materials and Processes for a New Economy", Seattle, WA, United States, 5/17/10.
    Redondo H, Atreya M, Kan M, Koo JH. Evaluation of char strength of polymer nanocomposites for propulsion systems. In SAMPE 2010 Conference and Exhibition "New Materials and Processes for a New Economy". 2010.
    Redondo, Hugo ; Atreya, Madhur ; Kan, Michelle ; Koo, Joseph H./ Evaluation of char strength of polymer nanocomposites for propulsion systems. SAMPE 2010 Conference and Exhibition "New Materials and Processes for a New Economy". 2010.
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    abstract = "The aim of this project is to develop a testing protocol to measure the strength of the char layer of internal insulation materials for solid rocket motors. The development of this protocol is an unexplored area of materials testing that can result in valuable insights for thermal protection applications. The mechanical properties of the char pose several challenges that prevent the usage of traditional testing methods. The fragileness of the char impedes the use of hardness testing, where plastic deformation can be used to measure properties. In the present phase of development, a prototype has been created to evaluate the protocol. The testing involves a measurement of the forces during penetration of the char layer. These forces are then analyzed and compared to previous tests to quantify the performance of the polymers being tested. Conclusions derived from the testing of a family of thermoplastic polyurethane elastomer nanocomposites (TPUNs) can lead to the replacement of state-of-the-art Kevlar\{circledR}-filled EPDM rubber as internal insulation materials for use in solid rocket motors. The main advantages of using TPUNs are the materials are recyclable and easier to manufacture as compared to the Kevlar\{circledR}-EPDM rubber.",
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