Heat discoloration printing ink and method preventing board card from becoming too hot through heat discoloration printing ink

A technology of thermal discoloration and ink, applied in the direction of ink, thermometer with physical/chemical change, application, etc., can solve the problems of inaccurate temperature, expensive equipment, affecting equipment development, etc., to prevent overheating of boards and simple construction process , low-cost effect

Inactive Publication Date: 2016-02-24
LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The temperature is inaccurate when using temperature sensing lines and infrared thermal imaging cameras, the equipment is expensive, and the equipment relies on for

Method used

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Embodiment Construction

[0016] The thermochromic ink and the method for using the thermochromic ink to prevent overheating of boards in the present invention will be further described in detail below in conjunction with the embodiments.

[0017] The thermochromic ink of the present invention is made of acrylic resin, epoxy resin, polyvinyl alcohol, barium sulfate, carbamate, 1-hydroxycyclohexyl benzophenone, diarylethene, spiroindoline, iodine It is mixed with ferric oxide, and the mixed raw material is dispersed in a high-speed dispersant for 4 hours. The blended material was milled in a three-roll mill for 6 hours to a particle size of less than 3 microns. Thermochromic inks can display different colors as the temperature changes. When the temperature is 20-30 degrees, 30-40 degrees, 40-60 degrees, and above 60 degrees, different colors are displayed, and the color change of the thermochromic ink is reversible with temperature. When the temperature rises, Ink color changes. When the temperature ...

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Abstract

The invention discloses a heat discoloration printing ink and a method preventing a board card from becoming too hot through the heat discoloration printing ink and belongs to the technical field of electronic circuit equipment. The heat discoloration printing ink is formed by mixing acrylic resin, epoxy resin, polyvinyl alcohol, barium sulfate, carbamate, 1-hydroxycyclohexylphenylketone, diarylethene, spiral dihydrogen indole, iodine and ferric oxide. The mixed raw materials are added into a high-speed dispersing agent to be dispersed and then is ground through a three-roller grinder. Surface-mounted elements on a plug-in circuit board are shielded, and the surface of a printed circuit board is coated with the heat discoloration printing ink in a silk-screen printing or spraying mode. According to the heat discoloration printing ink and the method preventing the board card from becoming too hot through the heat discoloration printing ink, the color of the heat discoloration printing ink can be changed when using temperatures are different, the temperature of the surface of the PCB can be directly and conveniently read, and application and popularization value is very good.

Description

technical field [0001] The invention relates to the technical field of electronic circuit equipment, and specifically provides a thermochromic ink and a method for using the thermochromic ink to prevent boards from overheating. Background technique [0002] During the design and use of electronic equipment, there are inevitably problems such as uneven distribution of thermal design, poor heat dissipation, and partial short-circuit heating of PCB. When different areas of the PCB are designed with different loads, areas with high loads will generate severe heat, while areas with low loads will generate less heat. When the area of ​​high load does not exceed the maximum load temperature of the PCB board or part, no exception will occur. When the local load exceeds the maximum load temperature of the PCB board or parts, there will be local overheating, which will cause the device to fail and burn out. When a short circuit occurs locally on the PCB, the local temperature of the...

Claims

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Application Information

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IPC IPC(8): C09D11/50H05K1/02G01K11/16G01K11/12
CPCH05K1/0201G01K11/16C09D11/50
Inventor 史书汉
Owner LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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