Temperature indicating patch for electrical equipment and preparation method of patch

A technology for electrical equipment and temperature display, applied to thermometers, parts of thermometers, thermometers with physical/chemical changes, etc., to achieve the effects of protecting the environment from corrosion, simple preparation, and strong water absorption

Pending Publication Date: 2020-11-27
重庆地格科技有限责任公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the purpose of the present invention is to provide a temperature-indicating patch for electrical equipment and a preparation method thereof, aiming at the current lack of temperature-indicating paint corresponding to the typical temperature value of the heating failure of electrical equipment and the way of painting the paint is not suitable for electron donor color-changing materials To solve the problem, three temperature-indicating materials with thermochromic effect were prepared, which produced reversible color changes when the temperature reached 75°C, 80°C, and 90°C, respectively, and then pasted on the heating part of the electrical equipment in the form of a patch to achieve electrical The purpose of equipment heating fault early warning, easy to install and use, has a wide range of application prospects

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0026] The invention also discloses a method for preparing a temperature-indicating patch for electrical equipment, which includes the following steps:

[0027] a. Fully dissolve the leuco agent and the color developer in the solvent;

[0028] b. Immerse the white water-absorbing substrate in the solvent;

[0029] c. Cover the sealing surface on the sealing surface of the white water-absorbing substrate;

[0030] In this embodiment, in step a, the solvent is a solid. The solid solvent is firstly heated and melted, mixed evenly with the leuco agent and the color developer, and then immersed in the water-absorbing substrate. After the water-absorbing substrate is fully infiltrated, the temperature is displayed and cooled. The operation is simple and easy to use, which can solve the problem that the electronic donor-like color-changing material becomes liquid after discoloration and is inconvenient to apply, enhances the weather resistance of the temperature-indicating material,...

Embodiment 1

[0032] Preparation of temperature-indicating materials: raw materials: crystal violet lactone: boric acid: polyethylene wax. Specific steps are as follows:

[0033] S1: Weigh 50 parts of polyethylene wax in a beaker and heat it to 96°C until it is completely melted;

[0034] S2: Weigh 1 part of crystal violet lactone and 2 parts of boric acid into the solvent melted in the previous step, and heat and stir at 96°C for 10 minutes;

[0035] S3: Naturally cool the above mixture to room temperature to obtain a material showing a temperature of 90°C.

[0036] A method for preparing a temperature-indicating patch. Specific steps are as follows:

[0037] S1: Weigh a certain amount of polyimide for film blowing to obtain two 5*5cm sealing layer films;

[0038] S2: Weigh the polyacrylate, catalyst and cross-linking agent into the reactor, heat and dissolve, stir evenly and set aside;

[0039] S3: Cut the rice paper into a size of 4*4cm, immerse it in the heated and melted temperatu...

Embodiment 2

[0044] S1: Weigh 70 parts of polyethylene wax in a beaker and heat it to 96°C until it is completely melted;

[0045] S2: Weigh 1 part of crystal violet lactone and 2 parts of boric acid into the solvent melted in the previous step, and heat and stir at 96°C for 10 minutes;

[0046] S3: Naturally cool the above mixture to room temperature to obtain a material showing a temperature of 90°C.

[0047] S4: Prepare the temperature-indicating material obtained in the previous step into a temperature-indicating patch, and the specific steps are the same as in Example 1.

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Abstract

The invention discloses a temperature indicating patch for electrical equipment, the temperature indicating patch comprises a white water absorbing base material impregnated with a liquid temperatureindicating material and a sealing surface layer for sealing the surface of the water absorbing base material, and the liquid temperature indicating material comprises the raw materials including a leuco agent, a color developing agent and a solvent; the temperature indicating material can be matched with a typical temperature value of a heating fault of electrical equipment, is high in water absorption, can store enough temperature indicating material, is light in color, can effectively distinguish the color change process of the temperature indicating material, can isolate the temperature indicating material from the atmospheric environment, better protects the temperature indicating material from being corroded by the environment, and prolongs the service life of the temperature indicating material. The problem that an electron donor color-changing material is in a liquid state after color changing and is inconvenient to apply can be solved, the weather resistance of the temperatureindicating material is enhanced, and the temperature indicating material is easy to prepare, low in cost and capable of being widely applied to heating fault temperature monitoring of power transmission and transformation equipment.

Description

technical field [0001] The invention relates to the field of high-voltage and insulation technology (electrical equipment and electrical engineering), in particular to an electrical equipment temperature-indicating patch for temperature monitoring of heating faults of power transmission and transformation equipment and a preparation method thereof. Background technique [0002] The safety and reliability of power grid affects national life and industrial production, and is the foundation of economic development. Many factors affect the safe operation of the power grid, among which the safety accidents caused by electrical equipment heating faults have a greater impact, because most electrical equipment adopts a closed structure with poor heat dissipation, and it is easy to generate heat accumulation during long-term operation. Equipment failure, therefore, temperature monitoring of electrical equipment can effectively reduce safety accidents caused by electrical equipment he...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K11/16G01K1/14G01K1/10
CPCG01K1/10G01K1/14G01K11/16
Inventor 胡琴蒋兴良赵法强舒立春陈加文黄洪松周坤邓钰龙
Owner 重庆地格科技有限责任公司
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