Thermochromic pigment temperature sensitive color changing pigment

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Thermochromic Color Heat Sensitive Pigments Thermochromic changing pigment for thermochromic paint

Thermochromic Powders are thermochromic micro capsules in a powder pigment form. They have been specially designed for use in non aqueous based ink systems although their use is not limited to this. They can be used to formulate non aqueous based flexographic, UV, Screen, Offset, Gravure and Epoxy Ink formulations (for aqueous applications we would recommend using Thermochromic slurries). `Thermochromic Powders’ are colored below a specific temperature, and change to colorless as they are heated through the temperature range. These pigments are available in various colors and activation temperatures.

Thermochromic pigment color to colorless reversible 5-70℃
Thermochromic pigment color to colorless irreversible 60℃,70℃,80℃,100℃,120℃
Thermochromic pigment colorless to color reversible 33℃ ,35℃,40℃ ,50℃,60℃,70℃

High-Quality Thermochromic Pigment for Industrial Applications

1、Plastics and Rubber Products

Daily Plastic Products

Suitable for injection molding and extrusion forming of transparent or translucent materials such as polypropylene (PP), ABS, PVC, and silicone. The addition amount is generally 0.4%-3.0% of the total plastic volume, commonly used in products like children’s toys, plastic soft spoons, and makeup sponges. For example, temperature-sensitive spoons change color when contacting hot food, indicating whether the food temperature is suitable.

Industrial Components

Used for casting or compression molding of materials such as epoxy resin and nylon monomers to manufacture industrial parts requiring temperature warning, such as radiator housings and electronic device accessories. Color indication in high-temperature areas warns of overheating risks.

2、Textiles and Apparel

Functional Apparel

Thermochromic pigments are applied to clothing through processes like printing and dyeing, enabling the apparel to change color according to body temperature or environmental temperature, enhancing (fun) and fashion sense. Examples include T-shirts, sweatshirts, and skirts with color-changing effects.

Fashion Design and Accessories

Used for color-changing scarves, shoes, and hats. Applying thermochromic pigments on the surface makes them present different colors under varying temperatures, adding unique visual effects to shoes, meeting consumers’ demand for personalized footwear, and enhancing product (fun).

3、Printing and Packaging

Anti-counterfeiting Labels

Thermochromic inks are used for product labels, tickets, etc. For anti-counterfeiting logos of e-cigarettes and high-value commodities, thermochromic pigments can be used to make anti-counterfeiting labels, verifying product authenticity through temperature changes. Thermochromic powders with different formulas have different color-changing temperatures, which are difficult for counterfeiters to replicate accurately, thus improving anti-counterfeiting reliability.

Smart Packaging

Applied in food and beverage packaging:

Cold drink cups: Display a specific color below 10°C to indicate the refrigerated state;
Hot drink cups: Change color above 45°C to warn of high temperatures and avoid scalding.

4、Consumer Electronics

E-cigarette Casings
Brands like ELF BAR and LOST MARY use temperature-sensitive coatings that dynamically change color with usage time (temperature rise), enhancing visual technology sense and user experience.
Temperature Control Indication for Electronic Devices
Thermochromic pigments are used on the casings of electronic devices (e.g., phone cases, tablet cases, earphone cases), enabling them to change color according to the device’s usage or environmental temperature, bringing a more personalized user experience. Color indication in high-temperature areas intuitively warns of overheating risks.

5、Beauty and Personal Care Products

Nail Polish

Adding thermochromic pigments triggers color changes from colorless to peach or gold, achieving “thousands of colors for thousands of people”.

Fever-Reducing Patches and Body Temperature Indication

Patches change color as body temperature rises (e.g., above 38°C), intuitively reflecting cooling effects or fever status.

6、Anti-counterfeiting and Temperature Control Indication

Industrial and Safety Fields

Temperature Indication: Used to make temperature indicators on industrial equipment, visually displaying the equipment’s operating temperature through color changes, facilitating staff to timely understand its working status and ensure normal operation.
Safety Signs: Making safety warning signs, such as setting thermochromic safety signs around fire-fighting equipment, electrical equipment, chemical equipment, etc. When the temperature rises abnormally, the sign color changes to remind people to pay attention to safety, playing a role in early warning and protection.
Usage Limitations and Precautions
- Environmental Tolerance: Prolonged exposure to UV rays will cause fading, suitable for indoor use;
- Temperature Limits: Processing temperature should be ≤230°C/10 minutes, and long-term operating temperature ≤75°C.
The core value of thermochromic pigments lies in dynamic interactivity and functional indication, with significant potential in the future for smart wearables, biomedical fields (e.g., bandage temperature monitoring), and IoT packaging