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2xMore Challenge

Affordable ballistic armor

  • Creator
    Submission
  • #3622

    AADHITHYA
    Participant
    @saadithya

    Cellulose nanocrystals (CNC) obtained from wood by-products materials such as wood chips and sawdust can be used to produce affordable low cost ballistic armor.Prepared properly, CNCs are stronger and stiffer than Kevlar or carbon fibers, so that putting CNC into composite materials results in high strength, low weight products. In addition, the cost of CNCs is less than ten percent of the cost of Kevlar fiber or carbon fiber. These qualities have attracted the interest of the military for use in lightweight armor and ballistic glass (CNCs are transparent), as well as companies in the automotive, aerospace, electronics, consumer products, and medical industries.

    Don’t be carried away by the looks of cellulose, common cellulose looks a little like wet tissue paper (not surprising, since paper is mostly cellulose), and isn’t especially strong. By processing cellulose further than has been the case to date, it’s possible to extract CNC fibrils with incredible tensile strength. Tensile strength and elasticity is measured in Pascals, and ballistic fiber most commonly in giga-Pascals (GPa). Kevlar 49 has an elasticity of 125 GPa and a tensile strength of 3.5GPa. CNC’s numbers are 150 GPa and 7.5 GPa, respectively.

    The only reinforcing material that is stronger than cellulose nanocrystals is a carbon nanotube, which costs about 100 times as much.

    References:-

    http://www.policeone.com/police-products/body-armor/articles/6040810-Future-tech-Ballistic-armor-made-of-wood/

    http://www.extremetech.com/extreme/134910-nanocellulose-a-cheap-conductive-stronger-than-kevlar-wonder-material-made-from-wood-pulp

     

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  • #3626

    Mathieu VERDET
    Member
    @mathieu

    For information, this concept was presented during the last conference at CRMR (centre de recherche des matériaux renouvelable) for glass in Québec and a member of FPinnovation have already a contact with the team of research and the Phd Student.

    But here, my major interrogation is : polluted particles represent a risk or not???

    For high technic implements and complex conceptions/chimistry…., I consider personnaly that the  ignorance of the exact composition of the raw materials is potential high problem and can imply consquences.

     

    #3627

    AADHITHYA
    Participant
    @saadithya

    Thanks for the information and good to know that FPinnovation is already exploring such innovative projects.

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