Self-healing material

Inactive Publication Date: 2015-06-11
PEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, their use is limited due to the difficulty in damage detection and repair, as well as lack of extended fatigue a

Method used

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Examples

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Embodiment Construction

[0012]The inventors discovered that a vinyl ester resin and a methyl ethyl ketone peroxide (“MEKP”) catalyst can serve well as a self-healing material system for FRP composites due, at least in part, to the following advantages:

[0013]1. The vinyl ester can be cured at room temperature when contacted or mixed with a MEKP catalyst.

[0014]2. The viscosity of both the vinyl ester resin and the MEKP catalyst is very low (<2,000 centipoises), which allows hollow glass fibers or microcapsules to be easily filled with each.

[0015]It was found that the vinyl ester resin / MEKP catalyst self-healing system can increase the service life of the panel and recover performance soon after initial damage.

[0016]According to aspects of the present invention, an example is hereinafter described,

[0017]Part I. Base materials

[0018]1. Self-Healing Agent:

[0019]A vinyl ester resin (e.g., product designation Derakane 411-350) was commercially obtained from Ashland, Inc. The MEKP catalyst was commercially obtained...

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Abstract

A glass fiber-reinforced polymer composite includes a polymer matrix, a plurality of glass fibers embedded within the polymer matrix, a first hollow glass fiber containing a resin embedded within the polymer matrix, a second hollow glass fiber containing a catalyst suitable for curing the resin embedded within the polymer matrix. When damage occurs to such a composite, the glass fibers containing the resin and the catalyst are ruptured, resulting in their mixing together so that the resin is cured for repairing the ruptured location.

Description

[0001]This application claims priority to U.S. Provisional Patent Application Ser. No. 61 / 648,306, which is hereby incorporated by reference herein.BACKGROUND INFORMATION[0002]Composite materials are ideal for structural applications where high strength-to-weight and stiffness-to-weight ratios are important. Weight sensitive applications, such as construction, aircraft, and space vehicles, are primary consumers of composites, especially fiber-reinforced polymer matrix composites. However, their use is limited due to the difficulty in damage detection and repair, as well as lack of extended fatigue and impact resistance. One way to protect material degradation is through the incorporation of a self-healing ability.[0003]To date, there has been significant research in self-healing polymeric materials, and numerous studies, specifically in fiber-reinforced polymers. Polymer composites have been attractive candidates to introduce the autonomic healing concept into modern day engineering...

Claims

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Application Information

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IPC IPC(8): D06M15/507
CPCD06M2101/00D06M15/507C08J5/043C08J2363/00C08J5/08C08J2331/00Y10T442/2934Y10T442/2951Y10T442/2992C08J5/249C08J5/248
Inventor MAO, DONGSHENGFINK, RICHARD LEEYANIV, ZVI
Owner PEN
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