Energy absorbing material
First Claim
Patent Images
1. A self-supporting energy absorbing composite comprising:
- i) a solid foamed synthetic polymer matrix;
ii) a polymer-based dilatant, different from i) distributed through the polymer of the matrix and incorporated into the polymer of the matrix during formation of i); and
iii) a fluid distributed through the matrix,the combination of matrix, dilatant and fluid being such that the composite is flexible and resiliently compressible.
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Abstract
A self-supporting energy absorbing composite includes: i) a solid foamed synthetic polymer matrix; ii) a polymer-based dilatant, different from i) distributed through the matrix and incorporated therein during manufacture of i); and iii) a fluid distributed through the matrix. In another embodiment, a self-supporting energy absorbing composite includes: iv) a solid, closed cell foam matrix; v) a polymer-based dilatant, different from i), distributed through the matrix; and vi) a fluid distributed through the matrix. In both embodiments, the combination of matrix, dilatant and fluid is such that the composite is resiliently compressible.
41 Citations
19 Claims
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1. A self-supporting energy absorbing composite comprising:
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i) a solid foamed synthetic polymer matrix; ii) a polymer-based dilatant, different from i) distributed through the polymer of the matrix and incorporated into the polymer of the matrix during formation of i); and iii) a fluid distributed through the matrix, the combination of matrix, dilatant and fluid being such that the composite is flexible and resiliently compressible. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An energy absorbing composite obtained by a method comprising combining:
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i) a solid foamed synthetic polymer matrix; ii) a polymeric dilatant, different from i), and iii) a fluid whereby the dilatant is distributed throughout the polymer of the matrix by incorporating the dilatant into the foamed synthetic polymer of the matrix during manufacture of the matrix and the fluid is distributed substantially uniformly throughout the matrix to produce a resiliently compressible-material.
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16. An energy absorbing composite comprising:
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i) a solid foamed synthetic elastomeric polyurethane matrix; ii) a dilatant comprising polyborodimethylsiloxane (PBDMS) distributed through the polymer of the matrix and incorporated into the polymer of the matrix during formation of i); and iii) a gas distributed through the matrix, the combination of polyurethane matrix, PBDMS and gas being such that the composite is flexible and resiliently compressible.
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17. A self-supporting energy absorbing composite comprising:
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i) a solid foamed synthetic polymer matrix formed by reacting foam forming ingredients in the presence of a polymer-based dilatant; ii) a polymer-based dilatant, different from i) distributed through the polymer of the matrix and incorporated into the polymer of the matrix during formation of the foamed synthetic polymer matrix; and iii) a fluid distributed through the matrix, wherein the foamed synthetic polymer matrix is formed by reacting the foam forming ingredients in the presence of the dilatant, such that the dilatant is distributed through the foamed synthetic polymer matrix; the combination of matrix, dilatant and fluid being such that the composite is flexible and resiliently compressible. - View Dependent Claims (18, 19)
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Specification