MULTIPLE FUNCTION, SELF-REPAIRING COMPOSITES WITH SPECIAL ADHESIVES

• US 20070087198A1
• Filed: 06/30/2006
• Published: 04/19/2007
• Est. Priority Date: 07/01/2005
• Status: Active Grant

• Current Assignee: Carolyn Dry
• Original Assignee: Carolyn Dry
• Inventors: Dry, Carolyn
• Granted Patent: US 7,811,666 B2
• Time in Patent Office: Days
• US Class Current: 428/408
• CPC Class Codes: B29C 73/22 the article containing elements including a sealing composition, e.g. powder being liberated when the article is damaged
• CPC Class Codes: B29K 2105/06 containing reinforcements, fillers or inserts
• CPC Class Codes: B32B 2250/05 5 or more layers
• CPC Class Codes: B32B 2250/42 Alternating layers, e.g. ABAB(C), AABBAABB(C)
• CPC Class Codes: B32B 2262/101 Glass fibres
• CPC Class Codes: B32B 2307/306 Resistant to heat
• CPC Class Codes: B32B 2307/558 Impact strength, toughness
• CPC Class Codes: B32B 2307/762 Self-repairing, self-healing
• CPC Class Codes: B32B 2419/00 Buildings or parts thereof walls, panels B32B2607/00
• CPC Class Codes: B32B 2457/00 Electrical equipment
• CPC Class Codes: B32B 2603/00 Vanes, blades, propellers, rotors with blades
• CPC Class Codes: B32B 2605/00 Vehicles
• CPC Class Codes: B32B 7/04 Interconnection of layers
• CPC Class Codes: B32B 9/007 comprising carbon, e.g. graphite, composite carbon
• CPC Class Codes: B32B 9/02 comprising animal or vegetable substances , e.g. cork, bamboo, starch
• CPC Class Codes: B32B 9/04 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to a glass layer B32B17/06; layered products with at least two ceramic layers composed mainly of ceramic B32B18/00
• CPC Class Codes: C04B 14/34 Metals , e.g. ferro-silicon
• CPC Class Codes: C04B 14/42 Glass
• CPC Class Codes: C04B 2111/00612 as one or more layers of a layered structure
• CPC Class Codes: C04B 2111/28 Fire resistance, i.e. materials resistant to accidental fires or high temperatures
• CPC Class Codes: C04B 24/24 : Macromolecular compounds C04B24/14 takes precedence; macromolecular compounds comprising sulfonate or sulfate groups C04B24/16
• CPC Class Codes: C04B 28/02 : containing hydraulic cements other than calcium sulfates
• CPC Class Codes: Y10T 428/24744 : Longitudinal or transverse tubular cavity or cell
• CPC Class Codes: Y10T 428/249921 : Web or sheet containing structurally defined element or component
• CPC Class Codes: Y10T 428/249924 : Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity
• CPC Class Codes: Y10T 428/249954 : With chemically effective material or specified gas other than air, N, or carbon dioxide in void-containing component
• CPC Class Codes: Y10T 428/249971 : Preformed hollow element-containing
• CPC Class Codes: Y10T 428/249974 : Metal- or silicon-containing element
• CPC Class Codes: Y10T 428/249994 : Composite having a component wherein a constituent is liquid or is contained within preformed walls [e.g., impregnant-filled, previously void containing component, etc.]
• CPC Class Codes: Y10T 428/2902 : Channel shape
• CPC Class Codes: Y10T 428/2913 : Rod, strand, filament or fiber
• CPC Class Codes: Y10T 428/2924 : Composite
• CPC Class Codes: Y10T 428/2971 : Impregnation
• CPC Class Codes: Y10T 428/30 : Self-sustaining carbon mass or layer with impregnant or other layer
• CPC Class Codes: Y10T 428/31678 : Of metal
• CPC Class Codes: Y10T 442/2008 : Fabric composed of a fiber or strand which is of specific structural definition

Abstract

A system for self-repairing matrices such as concrete or cementitous matrices, polymeric matrices, and/or fibrous matrices, including laminates thereof. The system includes repair agents retained in and/or on vessels, such as hollow fibers, within the matrix. Upon impact, the vessel rupture, releasing the chemicals. For multi-layer laminates, the systems provides a total dynamic energetic circulation system that functions as an in situ fluidic system in at least one layer or area. The energy from the impact ruptures the vessels to release the chemical(s), and mixes the chemical(s) and pushes the chemical(s) and/or resulting compound through the matrix. The repair agents can withstand high temperatures, such as the heat of processing of many laminates, e.g., 250-350° F.

Claims

4-1. The laminate of claim 1, wherein the modifying agent is configured to repair the laminate after an impact of 5 to 50 joules to the laminate, the repair being at least 80% of that prior to the impact.

15. A chemical modifying agent for use in a self-repair system, the modifying agent configured to resist a temperature of at least 250°

F. for at least one hour without degradation.

6. The laminate of claim 17, further comprising a second conduit having therein a reagent for the modifying agent

16. The modifying agent of claim 15 further comprising a color-change additive.

17. The modifying agent of claim 15, wherein after reaction, resists a temperature of at least 250°

F. for at least one hour without degradation.

18. The modifying agent of claim 17, wherein after reaction, resists liquid water without degradation.

19. The modifying agent of claim 17, wherein after reaction, is capable of repairing damage to a composite from an impact of 5 to 50 joules to at least 70% of that prior to the impact.

20. The modifying agent of claim 19, wherein after reaction, is capable of repairing damage to a composite from an impact of 5 to 50 joules to at least 80% of that prior to the impact.

21. The modifying agent of claim 15, wherein the modifying agent reacts by one of ROMP (ring-opening metathesis polymerization), Bergman cyclization, Dehls Alder, or Shrock chemistry.

22. The modifying agent of claim 15, wherein the modifying agent comprises DCDP (dicyclopentadiene), Grubbs ruthenium, tin or iron.

23. A self-repair system for a composite comprising:

a matrix; and

at least one conduit having retained therein a modifying agent that is released to flow in the matrix in response to an external stimulus, the modifying agent configured to resist a temperature of at least 250°

F. for at least one hour without degradation, wherein the system is capable of repairing damage to the composite from an impact of 5 to 50 joules to at least 70% of that prior to the impact.

24. The self-repair system of claim 23, wherein the composite is a laminate.

25. The self-repair system of claim 23, wherein the at least one conduit comprises fiberglass, cement, asphalt, hydroxyapatite, glass, ceramic, metal, polyolefin, polyester, polycarbonate, polyacrylate, polyarylate, polyamide, polyimide, polyaramide, polyurethane, carbon, graphite, cellulose, nitrocellulose, hydrocarbon, or piezoelectric material.

26. The self-repair system of claim 23 wherein the modifying agent reacts with a reagent present in the matrix.

27. The self-repair system of claim 23 wherein the modifying agent reacts with a reagent present in a second conduit.

28. The self-repair system of claim 27, wherein the conduit and the second conduit are in close proximity to each other.

29. The self-repair system of claim 28, wherein the conduit and the second conduit are intertwined or twisted.