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Insulating varnish and preparation method thereof

An insulating varnish, No. 1 technology, applied in the field of coatings, can solve problems such as unsatisfactory insulation properties, achieve high insulation levels, meet high temperature resistance requirements, and have a wide range of applications

Active Publication Date: 2014-10-08
西安经建油漆有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problem that the existing insulating varnish has unsatisfactory insulation performance in a high-temperature environment above 200°C, the present invention provides a new type of insulating varnish, which can maintain good insulation performance at 180-250°C for a long period of time. Meet the requirements of electrical equipment in aerospace and other fields for high temperature resistance and insulation performance of insulating varnish

Method used

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  • Insulating varnish and preparation method thereof
  • Insulating varnish and preparation method thereof
  • Insulating varnish and preparation method thereof

Examples

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preparation example Construction

[0032] The preparation method of insulating varnish of the present invention, comprises the steps:

[0033] (1) Hydrolysis

[0034] 1.1) Add tap water and xylene to the hydrolysis tank, wherein the amount of xylene added is 1 / 3 of its weight percentage.

[0035] 1.2) Add methylphenyldichlorosilane, monophenyltrichlorosilane, diphenyldichlorosilane and xylene into the batching tank, stir evenly and then pump into the high level tank, among which, the amount of xylene added is its share 1 / 3 of the weight percentage.

[0036] 1.3) After turning on the stirring device and interlayer cooling water of the hydrolysis kettle, evenly drop the mixture in the high-level tank into the hydrolysis kettle. The hydrolysis temperature in the hydrolysis kettle is controlled within the range of 25°C to 30°C. Insulate and stir for half an hour, turn off the stirring device and interlayer cooling water of the hydrolysis kettle.

[0037] The chemical reaction formula of hydrolysis is:

[0038] ...

Embodiment 1

[0074] As a preference for the present invention, the insulating varnish described in this implementation includes the following components in weight percentage: 5% of methylphenyldichlorosilane, 6% of monophenyltrichlorosilane, 3.5% of diphenyldichlorosilane, caprylic acid Zinc 0.02%, xylene 25%, tap water 60.48%. The zinc octoate described in this example is self-made zinc octoate.

[0075] The preparation method of insulating varnish described in the present embodiment comprises the steps:

[0076] (1) Hydrolysis

[0077] 1.1) Add 60.48 parts of tap water and xylene to the hydrolysis kettle. It should be noted that the amount of xylene added is 25 / 3 parts, which is about 8.33 parts.

[0078] 1.2) Add 5 parts of methylphenyldichlorosilane, 6 parts of monophenyltrichlorosilane, 3.5 parts of diphenyldichlorosilane and xylene into the batching kettle, stir evenly and then pump into the high level tank. It should be noted that, The addition of xylene is 25 / 3 parts, about 8.33...

Embodiment 2

[0090] As a preference for the present invention, the insulating varnish described in this implementation includes the following components in weight percentage: 4% of methylphenyldichlorosilane, 5% of monophenyltrichlorosilane, 3% of diphenyldichlorosilane, octanoic acid Zinc 0.01%, xylene 30%, tap water 57.89%. The zinc octoate described in this embodiment is commercially available zinc octoate.

[0091] The preparation method of insulating varnish described in the present embodiment comprises the steps:

[0092] (1) Hydrolysis

[0093] 1.1) Add 57.89 parts of tap water and xylene to the hydrolysis tank. It should be noted that the amount of xylene added is 10 parts.

[0094] 1.2) Add 4 parts of methylphenyldichlorosilane, 5 parts of monophenyltrichlorosilane, 3 parts of diphenyldichlorosilane and 10 parts of xylene into the batching tank, stir well and then pump into the high level tank.

[0095]1.3) After turning on the stirring device and interlayer cooling water of th...

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Abstract

The invention discloses an insulating varnish and a preparation method thereof, belonging to the technical field of paints. The invention mainly overcomes the technical problem that a conventional insulating varnish does not have ideal insulating properties under the condition of high temperature. The insulating varnish comprises, by weight, 3 to 5.1% of dichloromethyl phenylsilane, 4 to 6.9% of monophenyltrichlorosilane, 2 to 3.5% of diphenyltrichlorosilane, 0.01 to 0.02% of zinc octoate and 20 to 30% of xylene, with the balance being tap water. The preparation method for the insulating varnish comprises the following steps: hydrolysis; washing; concentration; condensation; etc. The insulating varnish provided by the invention has a high insulation grade, strong high temperature resistance and a wide application scope.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to an insulating varnish with excellent high-temperature resistance and insulation performance for motors and a preparation method thereof. Background technique [0002] Insulating varnish is an important insulating material based on high molecular polymer, which can be cured into an insulating film or an insulating whole under certain conditions. Insulating varnish generally consists of three parts: paint base, solvent or thinner and auxiliary materials. Lacquer base mainly refers to film-forming materials, including natural resin, synthetic resin, drying oil, etc. Lacquer base has a high viscosity or is solid at room temperature. Solvents or diluents and auxiliary materials generally dissolve the paint base and adjust the viscosity, but do not participate in film formation. [0003] For electrical and electrical products, insulating varnish is an indispensable mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/08C09D5/25C08G77/24C07C51/41C07C53/126
Inventor 赵绍芬杜宏印姚江柳景引利宋广杰
Owner 西安经建油漆有限责任公司
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