Generally speaking, the thicker the coating, the higher the discoloration temperature. This is because the thicker the coating and the relatively more pigment content, the greater the energy required to send the reaction. Therefore, it is necessary to increase the reaction temperature to produce the same discoloration. Practice has proved that the thickness of the coating is generally suitable for 20-40μm.
In short, the discoloration temperature of the temperature-indicating paint is greatly affected by the use conditions, so when using it to measure temperature, it is necessary to pay attention to the appropriate use conditions to obtain reliable data. In other words, due to the influence of the above-mentioned conditions, the multi-purpose of one variety of temperature-indicating paint has been limited to a certain extent. Therefore, temperature measuring paper cannot completely replace the temperature measuring instrument to solve the temperature display problem.
Of course, for the temperature display paper, its limitations lie in the irreversible reasons, the limitation of the temperature range, and the inability to monitor the temperature display process.
