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    • Aged and unaged PBIA-based copolymer testing for soft body armor applications

    Metadata Updated: July 29, 2022

    Traditionally, soft body armor has been made from materials such as poly(p-phenylene terephthalamide) (PPTA) and ultra-high molar mass polyethylene (UHMMPE). However, to diversify the fiber choices in the United States body armor market, copolymer fibers based on the combination of 5-amino-2-(p-aminophenyl) benzimidazole (PBIA) and PPTA were introduced. Little is known regarding the long-term stability of PBIA fibers, but as condensation polymers, they have potential sensitivity to moisture and humidity. Ballistic resistance and other critical structural properties of these fibers are predicated on their superior mechanical properties. Therefore, it is important to characterize the strength of these materials and understand their vulnerability to environmental conditions to evaluate their use lifetime in safety applications. Three PBIA-based fibers were selected for the study. The fibers were thoroughly washed to remove an organic coating, which held the individual fibers in each yarn bundle together, allowing for the disentangling of single fibers for mechanical testing. Molecular spectroscopy and single fiber tensile testing were performed on the fibers to characterize changes in their chemical structure, tensile strength, and strain to failure as a function of exposure time to four different hydrothermal ageing conditions.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: See this page for license information.

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    References

    http://dx.doi.org/10.3791/58124

    Dates

    Metadata Created Date March 11, 2021
    Metadata Updated Date July 29, 2022

    Metadata Source

    Harvested from NIST

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date March 11, 2021
    Metadata Updated Date July 29, 2022
    Publisher National Institute of Standards and Technology
    Maintainer
    Identifier ark:/88434/mds2-2123
    Data First Published 2019-10-07
    Language en
    Data Last Modified 2019-09-09 00:00:00
    Category Materials:Materials characterization
    Public Access Level public
    Bureau Code 006:55
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 33f4baf2-323c-4eb0-b8b2-fe0421603e91
    Harvest Source Id 74e175d9-66b3-4323-ac98-e2a90eeb93c0
    Harvest Source Title NIST
    Homepage URL https://data.nist.gov/od/id/mds2-2123
    License https://www.nist.gov/open/license
    Program Code 006:045
    Related Documents http://dx.doi.org/10.3791/58124
    Source Datajson Identifier True
    Source Hash db2a07686bcf51e73ba07ebcc70a12eda74557ac
    Source Schema Version 1.1

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