Puncture-healing Engineered Polymer Blends

materials and coatings
Puncture-healing Engineered Polymer Blends (LAR-TOPS-224)
Several puncture healing engineered melt formulations, consisting of a non-healing and a self-healing polymer
Overview
NASA inventors have developed a set of puncture self-healing materials comprised of commercially available, known self-healing polymer resin and additive blends. A range of puncture healing blends was developed by melt blending self-healing polymers with non-self-healing polymeric materials.

The Technology
Puncture healing melt blends were developed by melt blending self-healing polymers with non self-healing polymeric materials. The self-healing polymeric materials consisted of Surlyn&#174 8940, Affinity&#8482 EG 8200 G, and poly(butadiene)-graft-poly(methyl acrylate-co-acrylonitrile) or Barex&#174 210 IN. The non-self-healing polymeric materials consisted of poly(ether ether ketone) (PEEK), LaRC phenyl ethynyl terminated imide 330 (LaRC PETI 330), and Raptor Resins Bismaleimide-1 (BMI-1). Puncture healing blends were also prepared with chopped glass and chopped carbon fibers. The overall goal was to develop a product with superior properties relative to either of the starting materials. The melt blends were prepared in varying compositions to optimize desired properties of the resulting matrix. Ballistic testing was conducted to determine the self-healing characteristics of several developmental polymers subjected to micrometeoroid type damage.
NASA inflatable space habitat Stuffed Whipple Shield Configuration. Image credit: NASA/Keith Gordon
Benefits
  • Puncture healing capability of the melt blends improves at higher temperatures
  • Thermoplastic materials that can repeatedly and intrinsically self-heal without the need for foreign inserts or fillers (such as microencapsulated monomer)
  • Blend of self-healing polymer materials with high strength polymer resins potentially enables the materials to be used in structural, load bearing applications

Applications
  • Radiation shielding
  • Fuel tank liners
  • Healing layers in ballistic protection for armor, helmets and other personal protective equipment
  • Packaging material
  • Human prosthetics
  • Wire insulation material
  • Space habitats and structures
  • Micrometeoroid and orbital debris protective liners
Technology Details

materials and coatings
LAR-TOPS-224
LAR-18412-1
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