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An air-conditioning transformer potting glue

A technology of transformer and potting glue, applied in the directions of adhesives, epoxy resin glue, chemical instruments and methods, etc., can solve the problems of easily cracking epoxy resin, affecting the insulation performance of transformers, etc., to ensure the resistance to ultraviolet radiation. properties, good adhesion, good heat resistance

Active Publication Date: 2016-06-08
MINGGUANG RUICHUANG ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it is operated at high temperature, the transformer will expand due to heat, and it will easily crack the epoxy resin; if it is operated at low temperature, the transformer will shrink due to cold, and a certain gap will easily form between the transformer and the epoxy resin, thereby affecting the transformer. Insulation properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] An air-conditioning transformer potting glue, comprising the following raw materials in parts by weight: 100 parts of bisphenol F epoxy resin, 35 parts of bisphenol A epoxy resin, 35 parts of novolak epoxy resin, low viscosity methyl vinyl poly 40 parts of siloxane, 40 parts of phthalic anhydride, 3 parts of defoamer, 5 parts of curing agent, 8 parts of coupling agent, 6 parts of release agent, and 3 parts of silicon dioxide.

[0014] The preparation method of the air-conditioning transformer potting glue of this embodiment: take bisphenol F type epoxy resin, bisphenol A type epoxy resin, novolac epoxy resin, low viscosity methyl vinyl polysiloxane by weight Alkane, phthalic anhydride, defoamer, curing agent, coupling agent, mold release agent, active filler silica; put them into a mechanical stirring tank in turn, and mix and stir at 120°C for 10 hours under nitrogen protection That is the product.

Embodiment 2

[0016] An air-conditioning transformer potting glue, comprising the following raw materials in parts by weight: 100 parts of bisphenol F epoxy resin, 25 parts of bisphenol A epoxy resin, 25 parts of novolac epoxy resin, low viscosity methyl vinyl poly 35 parts of siloxane, 35 parts of phthalic anhydride, 1 part of defoamer, 3 parts of curing agent, 3 parts of coupling agent, 3 parts of release agent, 1 part of aluminum oxide.

[0017] The preparation method of the air-conditioning transformer potting glue of this embodiment: take bisphenol F type epoxy resin, bisphenol A type epoxy resin, novolac epoxy resin, low viscosity methyl vinyl polysiloxane by weight Alkane, phthalic anhydride, defoamer, curing agent, coupling agent, release agent, active filler aluminum oxide; put them into a mechanical stirring tank in turn, under nitrogen protection, mix and stir at 80 ° C for 5 The product is obtained within hours.

Embodiment 3

[0019] An air-conditioning transformer potting glue, comprising the following raw materials in parts by weight: 100 parts of bisphenol F epoxy resin, 28 parts of bisphenol A epoxy resin, 28 parts of novolac epoxy resin, low viscosity methyl vinyl poly 36 parts of siloxane, 36 parts of phthalic anhydride, 2 parts of defoamer, 4 parts of curing agent, 4 parts of coupling agent, 4 parts of release agent, and 2 parts of active filler aluminum oxide.

[0020] The preparation method of the air-conditioning transformer potting glue of this embodiment: take bisphenol F type epoxy resin, bisphenol A type epoxy resin, novolac epoxy resin, low viscosity methyl vinyl polysiloxane by weight Alkane, phthalic anhydride, defoamer, curing agent, coupling agent, release agent, active filler aluminum oxide; put them into a mechanical stirring tank in turn, under nitrogen protection, mix and stir at 100 ° C for 9 The product is obtained within hours.

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PUM

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Abstract

The invention relates to the technical field of the transformer pouring sealants and discloses an air-conditioning transformer pouring sealant. The air-conditioning transformer pouring sealant is prepared from the following raw materials in parts by weight: 100 parts of bisphenol F epoxy resin, 25-35 parts of bisphenol A epoxy resin, 25-35 parts of phenol formaldehyde epoxy resin, 35-40 parts of low-viscosity methyl vinyl polysiloxane, 35-40 parts of phthalic anhydride, 1-3 parts of defoamer, 3-5 parts of curing agent, 3-8 parts of coupling agent, 3-6 parts of release agent and 1-3 parts of active filler. Added with the mixed resin of the bisphenol F epoxy resin, the bisphenol A epoxy resin and the phenol formaldehyde epoxy resin, the air-conditioning transformer pouring sealant has good heat resistance, waterproofness and electrical properties; the ultraviolet radiation resistance of the pouring material can be guaranteed, and the requirements on cold-heat impact resistance and chemical corrosion resistance of the pouring material also can be met; the air-conditioning transformer pouring sealant has good adhesion, damp-heat aging resistance, cold-heat impact resistance and long-term ultraviolet radiation resistance, and does not crack due to chalking.

Description

technical field [0001] The invention relates to the technical field of potting glue for transformers, in particular to a potting glue for transformers for air conditioners. Background technique [0002] Transformer, also known as instrument transformer, is a general term for current transformer and voltage transformer. It can change high voltage into low voltage and high current into small current for measurement or protection system. Its function is mainly to convert high voltage or high current into standard low voltage or standard small current in proportion, so as to realize the standardization and miniaturization of measuring instruments, protection equipment and automatic control equipment. At the same time, the transformer can also be used to isolate the high-voltage system to ensure the safety of people and equipment. The production process of air-conditioning transformers generally includes the following steps: winding, tinning, shaking, first test, vacuum casting...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J163/00C09J183/07C09K3/10
Inventor 徐志敏
Owner MINGGUANG RUICHUANG ELECTRIC