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Adhesive for bonding lacquered wires in transposed conductor and production method thereof

A technology of transposition wires and enameled wires, applied in the direction of adhesives, connections, coupling devices, etc., can solve the problems of melting, heat-bonded transposition wires lose meaning, enameled wires lose cohesion, etc., and achieve the effect of reducing the danger of deformation

Active Publication Date: 2008-10-08
无锡锡东新农村投资发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After using thermally bonded transposed wires to make transformer windings, use the process temperature during drying and shaping to make the thermal adhesive cured on the surface of each enameled wire solidify again, so that the bonding between adjacent enameled wires occurs. At this time, Several enameled wires are bonded into a whole, and when a certain temperature is reached, the cured adhesive will melt again, so that the enameled wires lose their cohesive force, and it also makes thermally bonded transposition wires meaningless

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of production method of the adhesive that is used for bonding enameled wire in the transposition wire of the present invention adopts the following process steps, and its formula ratio is counted by parts:

[0022] Take 16 parts of polyvinyl butyral, 11 parts of cresol formaldehyde resin and 1 part of hydrochloric acid; 18 parts of ethanol, 42 parts of butanol and 10 parts of xylene; 2 parts of KH-550 (aminopropyltriethoxysilane) .

[0023] First add 16 parts of polyvinyl butyral and 11 parts of cresol formaldehyde resin into the reaction kettle, filter through a filter, and heat with a steam jacket at a heating temperature of 100°C to make polyvinyl butyral and cresol formaldehyde resin The melting is in a viscous flow state, and the temperature is gradually raised to 145°C, the heating time is 3.5 hours, and the sub-blade stirring wheel is started to stir for 3 hours, and the viscosity and solid content are measured by sampling. The viscosity is 650±100 seconds...

Embodiment 2

[0029] A kind of production method of the adhesive used for bonding the enameled wire in the transposition wire of the present invention adopts the following process steps: the formula ratio is counted by the number of parts:

[0030] Take 15 parts of polyvinyl butyral, 11 parts of cresol formaldehyde resin and 1 part of hydrochloric acid; 20 parts of ethanol, 39 parts of butanol and 10 parts of xylene; 4 parts of KH-550 (aminopropyltriethoxysilane) .

[0031] First add 15 parts of polyvinyl butyral and 11 parts of cresol formaldehyde resin into the reaction kettle, and filter through a filter; use a steam jacket to heat at a heating temperature of 105°C to make polyvinyl butyral and cresol formaldehyde resin The melting is in a viscous flow state, and the temperature is gradually raised to 150°C, the heating time is 4 hours, the split-blade stirring wheel is started to stir for 4 hours, the viscosity and solid content are measured by sampling, the viscosity is 650 ± 100 secon...

Embodiment 3

[0036] A kind of production method of the adhesive used for bonding the enameled wire in the transposition wire of the present invention adopts the following process steps: the formula ratio is counted by the number of parts:

[0037] Take 15 parts of polyvinyl butyral, 12 parts of cresol formaldehyde resin and 1 part of hydrochloric acid; 17 parts of ethanol, 42 parts of butanol and 10 parts of xylene; 3 parts of KH-550 (aminopropyltriethoxysilane) . First add 15 parts of polyvinyl butyral and 12 parts of cresol formaldehyde resin into the reaction kettle, filter through a filter, and heat with a steam jacket at a heating temperature of 95°C to make polyvinyl butyral and cresol formaldehyde resin The melting is in a viscous flow state, and the temperature is gradually raised to 140°C, the heating time is 3 hours, the split-blade stirring wheel is started to stir for 2 hours, and the viscosity and solid content are measured by sampling. The viscosity is 650±100 seconds (No. 4 ...

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PUM

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Abstract

The invention relates to adhesive used for the adhesion of the enameled wire in the transposition conducting wire and the production method which belong to the winding wire material production field. The adhesive and the production method are characterized in that polyvinyl butyral and cresol-formol resin are added to the reaction kettle, and stirred, filtered and heated, enabling the polyvinyl butyral and cresol-formol resin to be fused and in the viscous flow state; catalyst is added to the reaction kettle and the mixture in the reaction kettle is reacted to be fused mixture; and then the reaction kettle is heated to enable the fused mixture to have polycondensation; and then ethanol, butanol, xylene and 3-aminopropyl triethoxysilane are added to the reaction kettle and stirred continuously; the product adhesive is obtained after the fused mixture is filtered; when the transposition conducting wire is manufactured to a winding, the adhesive and the production method can set the fusion time to 1 to 2 times during the drying and shaping process; when the production is finished, the adhesive becomes permanent curing and can resist the ultra-high temperature fusion which enables thetransposition to lose the adhesive force, reduces the mechanical intensity to have the transformation danger and is caused by the short circuit impact of the transformer winding; when the adhesive isused, the transposition conducting wire in the transformer winding is ensured not to be fused under any temperature.

Description

technical field [0001] The invention relates to an adhesive used for bonding enameled wires in transposed wires and a production method thereof, in particular to bonding between single enameled wires in transposed wires, and belongs to the field of winding wire material manufacturing. Background technique [0002] At present, a large number of power transformers use transposed wires to make windings, and the transposed wires are made of several enamelled flat wires according to certain rules. In order to enhance the mechanical strength of the transformer winding and improve its impact resistance during operation, a liquid thermal adhesive is coated on the surface of each enamelled flat wire. The liquid thermal adhesive is mainly made of polyvinyl butyral, cresol formaldehyde resin and ethanol and other components in a certain proportion, melted, stirred and polycondensed. After the enameled flat wire coated with liquid hot adhesive is baked, a cured adhesive layer is formed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J187/00H01R31/06
Inventor 陆炳兴廖和安
Owner 无锡锡东新农村投资发展有限公司