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

Patent metadata

Field	Value
Publication number	US-10526495-B2
Application number	US-201615543464-A
Country	US
Kind code	B2
Filing date	Jan 14, 2016
Priority date	Jan 16, 2015
Publication date	Jan 7, 2020
Grant date	Jan 7, 2020

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

We claim:

1. An electrical device comprising:
a substrate made from or a metal or non-metal, the substrate having a first part and a second part, the first part being selectively displaceable relative to the second part; and
an outer layer or coating positioned on the substrate, the outer layer or coating comprising a self-healing polymer, a first section of the self-healing polymer being positioned on the first part and a second section of the self-healing polymer being positioned on the second part at a location at which, upon selective displacement of the first part, the first section contacts, and securely self-bonds with, the second section.

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 a cross-linking agent and/or a catalyst.

5. The electrical device according to claim 1 , wherein the modified polyurea material further comprises triethyolamine (TEA) and tetra ethylene glycol (TEG) as cross-linking agents and dibutyl tin diacetate as a catalyst.

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.

Assignees

• Thomas & Betts Int Llc
• Abb Schweiz Ag

Inventors

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

Classifications

• C09D175/04

  Polyurethanes · CPC title

• C09D5/4419 Primary

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

• 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

• C09D5/4423

  Polyesters, esterified polyepoxides · CPC title

• G01R1/04

  Housings; Supporting members; Arrangements of terminals · CPC title