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    Thermochromic Pigments

    Color change principle

    Thermochromic Pigments (commonly known as thermochromic powder) primarily consist of three components: Thermochromic dyes, color-developing agents, and solvents. 

    At high temperatures, the color-changing dyes and color-developing agents remain dispersed in the solvent, resulting in a white appearance. As the temperature decreases, the solvent gradually solidifies, causing the color-changing dyes and color-developing agents to come into close proximity. Under the action of the color-developing agent, the color-changing dyes undergo structural changes, enabling the system to display color. 

    By regulating the solidification temperature of the solvent, thermochromic products that change color at different temperatures can be manufactured.

      Product TYPE

      温变颜料-18℃
      02

      18 ℃ temperature change product

      Category of the product
      Cold change product, change color when cold.
      Product description
      When the temperature of the product is reduced to 18℃, the color begins to appear, and the color reaches the saturation color at 14℃.
      Main uses
      Primarily used in injection molding and coating processes for products such as cold drink cups and molded tableware.
      温变颜料-4
      02

      22 ℃ temperature change product

      Category of the product
      Cold change product, change color when cold.
      Product description
      When the temperature of the product drops to 22℃ after being cold, the color begins to appear, and the color reaches saturation at 18℃.
      Main uses
      For injection molding and coating process products, such as water cups, injection molding tableware, etc.
      温变颜料-28℃
      02

      28 ℃ temperature change product

      Category of the product
      Room temperature product, color changes with body temperature.
      Product description
      When the ambient temperature is below 24 ℃, the color of the product reaches the original saturated color, and with the increase of temperature, when the temperature of the product reaches 28 ℃, the color completely disappears.
      Main uses
      For textile and clothing, injection molding and coating process products, such as swimwear, beach pants.
      温变颜料-31℃
      02

      31 ℃ temperature change product

      Category of the product
      Room temperature product, color change with body temperature.
      Product description
      When the ambient temperature is below 27℃, the color of the product reaches the original saturation color. With the increase of temperature, when the temperature of the product reaches 31℃, the color completely disappears.
      Main uses
      For textile and clothing, injection molding and coating process products, such as beach pants, T-shirts, etc.
      温变颜料-33℃
      02

      33 ℃ temperature change product

      Category of the product
      Room temperature product, color change with body temperature.
      Product description
      When the ambient temperature is below 29℃, the color of the product reaches the original saturation color. With the increase of temperature, when the temperature of the product reaches 33℃, the color completely disappears.
      Main uses
      For textile and clothing, injection molding and coating process products, such as T-shirts.
      温变颜料-42℃
      02

      42 ℃ temperature change product

      Category of the product
      High temperature products,change color when hot.
      Product description
      When the ambient temperature is below 38℃, the color of the product reaches the original saturation color. With the increase of temperature, when the temperature of the product reaches 42℃, the color completely disappears.
      Main uses
      For injection molding and coating process products, such as temperature indicator wristband, temperature prompt for infant products, etc.
      温变颜料-7
      02

      45 ℃ temperature change product

      Category of the product
      High-temperature products change color when exposed to heat
      Product description
      The original color of the product is usually achieved at room temperature. When the temperature of the product is higher than 41℃, the color begins to fade gradually, and the color completely fades at 45℃.
      Main uses
      For injection molding and coating process products, such as hot drink cups.
      温变颜料-50℃
      02

      50 ℃ temperature change product

      Category of the product
      High temperature product, change color when hot
      Product description
      Under normal temperature environment, the color of the product reaches the original saturation color. When the temperature of the product is higher than 46℃, the color begins to fade gradually, and the color completely fades at 50℃.
      Main uses
      Used in injection molding and coating process products, this series of products are black, color fading in high temperature, will show the base color, can play a role in high temperature warning, such as bathroom coating products.

      colour atlas

      表格

      Instructions for use

      Product color change description
      The standard product is low temperature color to high temperature colorless, but also can be customized according Thermochromic Pigments to customer needs.

      Recommended use and dosage
      The content in the ink and coating is 2 ~20 wt%. For injection molding: 0.2 to 2 wt%.

      Product features
      Different colors of temperature change powder have different anti-photoaging properties. It can produce effects by being evenly dispersed in the system and is easy to use.

      matters need attention

      Avoid using highly polar solvents such as methanol or ethanol, as they may affect the capsule's internal environment through osmosis, thereby compromising color-changing performance. For high-temperature processes, the processing temperature should not exceed 220°C and the duration should not surpass 30 minutes. Consider adding heat stabilizers, lowering the processing temperature, or shortening the processing time.

      We recommend conducting a small test before use. For further technical support, please contact us.

      IN CONLUSION

      As a classic temperature-sensitive functional pigment, Thermochromic Pigments play an irreplaceable role in daily chemical, textile, plastic and packaging industries with its sensitive color change response, stable performance and broad application adaptability. With stable product quality, diversified application scenarios and reliable supply capacity, we are committed to providing high-quality Thermochromic Pigments and professional technical services for global customers.

      Choose our Thermochromic Pigments to meet your application needs in industrial production, product customization and intelligent temperature indication. Contact us for more product details and cooperation support.