Electrical devices and components used in electrical systems made with self-healing materials

Patent metadata

Field	Value
Publication number	US-2018002544-A1
Application number	US-201615543464-A
Country	US
Kind code	A1
Filing date	Jan 14, 2016
Priority date	Jan 16, 2015
Publication date	Jan 4, 2018
Grant date	—

Abstract

Self-healing polymers used to fabricate electrical devices or to coat electrical devices that have a metal or polymer substrate. The self-healing polymers can be made from modified polymers including polyurethanes, polyureas, polyamides and polyesters and, optionally, cross-linking agents and one or more catalysts. The self-healing polymers can be used to make cable ties, tape, conduit fittings and explosion-proof sealant materials.

First claim

1 . An electrical device made from or a metal or non-metal substrate having an outer layer or coating comprising a self-healing polymer.

2 . The electrical device according to claim 1 , wherein the self-healing polymer is modified polyurethanes, polyureas, polyamides or polyesters.

3 . The electrical device according to claim 2 , wherein the self-healing polymer is modified polyurea material comprising a first monomer that has isocyanate function groups and a second monomer that has amine function groups.

4 . The electrical device according to claim 2 , wherein the modified polyurea material further comprises cross-linking agents and a catalyst.

5 . The electrical device according to claim 4 , wherein the cross-linking agents are triethyolamine (TEA) and tetra ethylene glycol (TEG) and the catalyst is dibutyl tin diacetate.

6 . The electrical device according to claim 5 , wherein the molar ratio of TEA to the first monomer to TEG to the second monomer is 1:12:6.8:4.

7 . A cable fastener having an elongated body, a tail and a head with a locking mechanism, wherein the cable fastener is made from a material comprising a self-healing polymer.

8 . The cable fastener according to claim 7 , wherein the tail and head are made from or coated with the self-healing polymer.

9 . The cable fastener according to claim 7 , wherein the self-healing polymer comprises polyurethanes, polyureas, polyamides or polyesters.

10 . The cable fastener according to claim 7 , wherein a geometric feature is provided to initiate and maintain physical surface contact before the two parts of the self-healing polymers join by chemical bond.

11 . A self-bonding tape comprising a self-healing polymer.

12 . The self-bonding tape according to claim 11 , wherein the tape has at least two layers, wherein one layer is an outer, adhesive layer comprising the self-healing polymer.

13 . The self-bonding tape according to claim 11 , wherein the tape has at last two outer layers comprising the self-healing polymer.

14 . The self-bonding tape according to claim 11 , wherein the self-healing polymer comprises polyurethanes, polyureas, polyamides or polyesters.

15 . A conduit system comprising a conduit having an exterior surface and an interior surface and a fitting having an outer surface and an inner surface, wherein the fitting receives the conduit so that the inner surface of the fitting contacts the outer surface of the conduit, and wherein the conduit and the fitting comprise a self-healing polymer.

16 . The conduit system according to claim 15 , wherein a component will provide and maintain initial physical surface contact of the two self-healing materials to allow the self-healing materials to join into one with chemical bond.

17 . The conduit system according to claim 15 , wherein the inner surface of the fitting and the outer surface of the conduit are coated with the self-healing polymer.

18 . The conduit system according to claim 15 , wherein the self-healing polymer comprises polyurethanes, polyureas, polyamides or polyesters.

19 . An explosion-proof sealant material that is installed inside a connector housing, wherein the explosion-proof sealant material comprises a self-healing polymer and is a powder.

20 . The explosion-proof sealant material according to claim 19 , wherein the self-healing polymer comprises polyurethanes, polyureas, polyamides or polyesters.

Assignees

• Thomas & Betts Int Llc

Inventors

• Gao Yan
• Drane Mark
• Dinh Cong Thanh
• White Ronald
• De La Borbolla Ian Rubin

Classifications

• C09D177/00

  Coating compositions based on polyamides obtained by reactions forming a carboxylic amide link in the main chain (based on polyhydrazides C09D179/06; based on polyamide-imides C09D179/08); Coating compositions based on derivatives of such polymers · CPC title

• C09D5/4419 Primary

  with polymers obtained otherwise than by polymerisation reactions only involving carbon-to-carbon unsaturated bonds · CPC title

• C09D175/04

  Polyurethanes · CPC title

• G01R1/04

  Housings; Supporting members; Arrangements of terminals · CPC title

• C09D5/4461

  Polyamides; Polyimides · CPC title