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Method of making a blast or shock wave mitigating material

  • US 10,183,423 B2
  • Filed: 02/01/2015
  • Issued: 01/22/2019
  • Est. Priority Date: 09/09/2011
  • Status: Active Grant
First Claim
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1. A method of making a blast or shock wave mitigating material, comprising:

  • providing a compound that is curable to form a polymer;

    providing a mold cavity having an internal height adapted and configured to produce cured polymer suitable to be used in a helmet or as a sheet of material to be used in blast protection panel, the mold cavity configured to provide geometric features within the cured polymer;

    placing the compound in the mold cavity;

    permitting curing of the compound to proceed for at least about five minutes to provide a partially cured material;

    exposing the partially cured material in the mold cavity to pressure less than ambient pressure for a period of time after said permitting during which curing progresses to provide a substantially polymerized material;

    removing the substantially polymerized material from the mold;

    filling the geometric features of the substantially polymerized material with a fluid; and

    , after said filling, forming the substantially polymerized material as an interior portion of a helmet or as the blast protection panel.

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