Profile
Color changes of Thermochromic pigments are induced by temperature change. The pigments are composed by microcapsules that change colors reversibly.
Properties
Fine particle size: the average size is 6-9μm
Good dispersibility: With special surface treatment, it could be dispersed well in most carriers, like ink, paint and plastic.
Good heat resistance: It’s stable under 140℃ / 30mins; 200℃ / 10mins.
Good solvent resistance: Insoluble in organic solvent
Application
Solvent base ink/ paint
Water base ink/ paint
Plastic
Product Range
TCX series reversible heat sensitive color fading pigments, When temperature rises to a specified temperature, the color starts fading and back to the original color as the pigment is cooled down.
Available Activation Temperatures: 10-70℃.
Multi color available: 10 standard colors for each activation temperature. Yellow, Red, Pink, Magenta, Royal Blue, Yellowish Green, Green, Bluish Green, Brown, Black. Beside this, all the colors can be mixed with each other or added other pigments.
TCX series reversible heat sensitive color revealing pigments, It’s colorless under low temperature. When temperature rises to a specified temperature, the color starts revealing and back to colorless as the pigment is cooled down.
Available Activation Temperatures: 60-65℃.
Multi color available: Magenta, Blue, Green, all the colors can be mixed with each other or added other pigments.
Reference colors for Application
A. Match any color as your expect. You may mix different colors of thermochromic pigments with the same temperature to create more colors.
B. Two-phase Color Change. They also can be mixed with regular pigments, so that the color can be changed from one to another. At lower temperature, the color reveals matched shade. When the temperature is increased, the thermochromic pigment start fading to colorless. It only shows color of the regular pigments.
C. Multi-phase Color Change. By mixing the thermochromic pigments with different temperature ranges, the color can be varied for more than two colors.
Remark
Don’t recommend to mix with other opaque pigments and fillers, it will be lower the effecting.
Avoid dispersing by high-speed shearing machine, like ball-grinding machine, sand-milling machine, three-rolling machine, etc. Otherwise, the protection layer may be destroyed and lose the effecting.
Avoid processing with high temperature (>230℃).
For printing inks / paint, it is recommended to adjust the pH value of resin between 5-8.
Avoid using toluene as single solvent. If the formulation is a mixed solvent, less toluene is recommended.