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Electric equipment overheating alarm indicator and preparation method thereof

A technology for alarm indication and electrical equipment, applied in the field of thermochromic indicator and its preparation, which can solve the problems of easy sedimentation and stratification, inconvenient operation, insufficient insulation capacity, etc.

Active Publication Date: 2019-01-04
HAISAI NEW TECH CHANGSHA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are two main forms of overheating temperature indicating materials for existing electrical equipment: one is temperature-changing stickers, which are inconvenient to operate in individual narrow spaces; the other is ink, which is easy to operate, but still There are the following disadvantages: (1) The viscosity is low, and it is easy to show tear-like sagging or sagging after coating; (2) The storage stability of the solution is poor, and it is easy to settle and stratify; (3) The adhesion is insufficient or too strong, resulting in the coating It is easy to fall off after covering or the adhesive force is too strong to affect the replacement of electronic parts; (4) Insufficient insulation capacity can easily lead to leakage

Method used

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  • Electric equipment overheating alarm indicator and preparation method thereof
  • Electric equipment overheating alarm indicator and preparation method thereof

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specific Embodiment approach

[0038] According to a specific embodiment of the present invention, the electrical equipment overheating alarm indicator includes the following components:

[0039] 10-30 parts of color changing powder, 2-5 parts of ethylene acrylic acid copolymer, 0.5-2 parts of eicosanoic acid, 1-5 parts of aminopropylaminoethyl dimethoxysilane, 5-10 parts of n-heptane, pine 0.5-1 part of oleyl alcohol, 0.5-20 parts of polyvinyl alcohol, 0.5-2 parts of polyacrylamide, 0.5-2 parts of fatty alcohol polyoxyethylene ether, 0.5-2 parts of phosphate ester, 10-20 parts of melamine polymer, The balance is water.

[0040] The present invention also provides a preparation method of the above-mentioned electrical equipment overheating alarm indicator, comprising the steps of:

[0041] S1, dissolving the encapsulating material with an organic solvent, then adding the color-changing powder and an organic dispersant and stirring evenly to obtain the encapsulated color-changing powder solution;

[0042] ...

Embodiment 1

[0060] Take 2 grams of ethylene acrylic acid copolymer EAA580 and 1 gram of eicosanoic acid, add 10 grams of heptane, stir, and after completely dissolving, add 20 grams of discoloration powder and 1 gram of terpineol, and put it in a ball mill tank at 150r / min stirring for 20min. Then add it to 42 grams of water, then add 1 gram of polyacrylamide, 10 grams of polyvinyl alcohol, 10 grams of MCA, 2 grams of aminopropylaminoethyl dimethoxysilane, 1 gram of TBP, and finally add fatty alcohol polyoxyethylene ether 1 g, stirring constantly until uniform gel. The color-changing powder is compounded with silicon dioxide and organic pigment in a weight ratio of 3:7, wherein the organic pigment is Pigment Red 2030, and the average particle diameter of the color-changing powder after encapsulation is 2 μm.

Embodiment 2

[0062] As in Example 1, the difference is that the polyacrylamide is replaced with polyvinyl alcohol of the same content, and the organic pigment is pigment red 254 and 2BP red in a mass ratio of 5:1.

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Abstract

The invention discloses an electric equipment overheating alarm indicator. The electric equipment overheating alarm indicator comprises 10-30 parts of color changing powder, 2-10 parts of encapsulating material, 1-5 parts of aminopropylaminoethyl dimethoxysilane, 5-10 parts of organic solvent, 0.1-5 parts of organic dispersing agent , 0.5-25 parts of water-based thickener, 0.2-4 parts of non-ionicsurfactant, 0.5-5 parts of defoamer and 10-20 parts of flame retardant, the balance is water, the color change powder includes at least one of monoazo, bisazo and pyrrolopyrroledione organic pigments, and the encapsulating material includes organic acid. The invention further discloses a preparation method of the indicator. The indicator is advantaged in that an indicator temperature range is stable, further has good coating property, stability, flame retardancy, adhesion and insulation property, high hardness of coating film, good temperature sensitivity and heat resistance, and the need ofmost electrical equipment can be met.

Description

technical field [0001] The invention relates to a thermochromic indicator and a preparation method thereof, in particular to an irreversible thermochromic indicator capable of changing color in a predetermined temperature range, and is especially suitable for overheating alarm indication of electrical equipment. Background technique [0002] The thermal indicator is a material that changes color with the change of the ambient temperature. It is simple and convenient to indicate the temperature dynamically through the color. Temperature-changing materials are divided into two types: reversible temperature-changing materials and irreversible temperature-changing materials. Among them, there are many kinds of reversible temperature-changing materials. As the temperature rises and falls, the color change is reversible. However, because of the reversible color change, this kind of material is not suitable for overheating indication of electrical equipment. The irreversible tempe...

Claims

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Application Information

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IPC IPC(8): G01K11/16
CPCG01K11/16
Inventor 胡洛李素芳
Owner HAISAI NEW TECH CHANGSHA