Method for producing circuit-breaker pole parts

Patent metadata

Field	Value
Publication number	US-2016181027-A1
Application number	US-201314907319-A
Country	US
Kind code	A1
Filing date	Aug 22, 2013
Priority date	Aug 22, 2013
Publication date	Jun 23, 2016
Grant date	—

Abstract

A process for producing a circuit-breaker pole part for use in a medium-voltage or high-voltage circuit-breaker comprising adjoining (a) an inner vacuum interrupter layer, (b) an intermediate compensation layer, and (c) an outer insulating sleeve layer, wherein the intermediate compensation layer is disposed between the inner vacuum interrupter layer and the outer insulating sleeve layer; wherein said layers are integrated with each other to form a circuit-breaker pole part; and wherein the intermediate compensation layer comprises the reaction product of (I) an epoxy-terminated prepolymer and (II) a curing agent; and a circuit-breaker pole part produced by the above process.

First claim

1 . A process for producing a circuit-breaker pole part for use in a medium-voltage or high-voltage circuit-breaker comprising adjoining (a) an inner vacuum interrupter layer, (b) an intermediate compensation layer, and (c) an outer insulating sleeve layer, wherein the intermediate compensation layer is disposed between the inner vacuum interrupter layer and the outer insulating sleeve layer; wherein said layers are integrated with each other to form a circuit-breaker pole part; and wherein the intermediate compensation layer comprises the reaction product of (I) an epoxy-terminated prepolymer and (II) a curing agent.

2 . The process of claim 1 , wherein the curing agent (II) is at least one amine curing agent compound.

3 . The process of claim 1 , wherein the epoxy-terminated prepolymer compound (I) comprises the reaction product of (i) a polyoxyalkyleneamine compound and (ii) an epoxide compound.

4 . The process of claim 3 , wherein the polyoxyalkyleneamine compound (i) has from 3 to about 12 active hydrogen atoms.

5 . The process of claim 3 , wherein the concentration of the polyoxyalkyleneamine compound (i) comprises from about 20 weight percent to about 80 weight percent.

6 . The process of claim 3 , wherein the epoxide compound (ii) has from 2 to about 5 epoxy groups.

7 . The process of claim 3 , wherein the concentration of the epoxide compound (ii) comprises from about 20 weight percent to about 80 weight percent.

8 . The process of claim 1 , wherein the curing agent (II) has from 2 to about 5 active hydrogen atoms.

9 . The process of claim 1 , wherein the epoxy amine group molar ratio is from about 0.5 to about 1.5.

10 . A circuit-breaker pole part prepared by the process of claim 1 .

11 . A circuit breaker pole part for use in a medium-voltage or high-voltage circuit breaker comprising (a) an inner vacuum interrupter, (b) an intermediate compensation layer, and (c) an outer insulating sleeve; wherein the intermediate compensation layer is disposed between the inner vacuum interrupter layer and the outer insulating sleeve layer; wherein said layers are integrated with each other to form a circuit-breaker pole part; and wherein the intermediate compensation layer comprises the reaction product of (I) an epoxy-terminated prepolymer and (II) a curing agent.

12 . (canceled)

13 . (canceled)

14 . A method for producing a circuit breaker pole part comprising the steps of:
(a) providing a first mold; (b) inserting an inner vacuum interrupter layer into the first mold; (c) preheating the first mold with the inner vacuum interrupter layer in the mold; (d) providing a curable elastomeric resin formulation comprising (I) at least one epoxy-terminated prepolymer, and (II) at least one amine curing agent compound blended together to form a curable elastomeric resin formulation; (e) injecting the curable elastomeric resin formulation into the preheated first mold to dispose the curable elastomeric resin formulation on at least a portion of the inner vacuum interrupter layer; (f) curing the curable elastomeric resin formulation in the first mold to form a first composite member comprising a cured compensation layer bonded to an inner vacuum interrupter layer; (g) removing the first composite member from the first mold; (h) placing the first composite member formed in the first mold into a second preheated mold; (i) injecting a curable epoxy resin into the second preheated mold to dispose the curable epoxy resin on at least a portion of the cured compensation layer; (j) curing the curable epoxy resin in the second mold to form a second composite member comprising a cured outer insulating sleeve layer bonded to the compensation layer of the first composite member; and (k) removing the second composite member from the second mold; wherein the second composite member comprising a cured outer insulating sleeve layer, the compensation layer and the inner vacuum interrupter layer is adapted for use as a circuit-breaker pole part.

15 . The method of claim 14 , wherein the inner vacuum interrupter layer is ceramic.

Assignees

• Dow Global Technologies Llc

Inventors

• Cao Yewen
• Chen Huan
• Chang Kwanho

Classifications

• H01H33/66207 Primary

  Specific housing details, e.g. sealing, soldering or brazing · CPC title

• H01H11/00 Primary

  Apparatus or processes specially adapted for the manufacture of electric switches (processes specially adapted for manufacture of rectilinearly movable switches having a plurality of operating members associated with different sets of contacts, e.g. keyboards, H01H13/88) · CPC title

• H01H2033/6623

  Details relating to the encasing or the outside layers of the vacuum switch housings · CPC title

• C08G59/5006

  aliphatic · CPC title

• C08G59/3227

  Compounds containing acyclic nitrogen atoms · CPC title