Composite foam
AssigneeThe Regents of the University of California
InventorsVijay Gupta, Brian Jouse Ramirez, Utkarsh Misra
Life of this patent
Estimating the term…
Abstract
Composite materials having superior material properties useful as impact absorbing devices can be fabricated by embedding a lattice structure (e.g., polymer lattice structure) within a foam, so that the foam reinforces the lattice structure under impact. Materials and dimensions of the foam and the lattice structure may be selected to achieve composite materials having tailored impact absorbing elastic and/or viscoelastic responses over a wide range of temperatures.
Claims32
A composite material useful as an impact absorbing device, comprising:
- a lattice structure embedded in a foam, wherein:
- the lattice structure comprises struts having a length in a range from 1 micrometer to 100 centimeters and a width in a range of 1 micrometer to 100 centimeters;
- the foam comprises pores having a width in a range of 1-1000 micrometers;
- and
- the foam reinforces the lattice structure under impact.
A method of making an impact absorbing device, comprising:
- forming a composite material comprising a lattice structure embedded in a foam, wherein:
- the lattice structure comprises struts having a length in a range from 1 micrometer to 100 centimeters and a width in a range of 1 micrometer to 100 centimeters;
- the foam comprises pores having a width in a range of 1-1000 micrometers;
- and
- the foam reinforces the lattice structure under impact.
A polyurea foam useful as an impact absorbing material, comprising:
- an oligomeric diamine polyol combined with diisocyanate.
Dependencies are inferred from the claim text.