Temperature change powder pigment commonly known temperature change, temperature or temperature change powder pink. Color theory and color pigments temperature structure: the temperature change of the electron transfer-type pigment is prepared Photoluminescent Masterbatch organic system. Electron transfer-type compounds are a class of organic hair color system with a special chemical structure. At a specific temperature due to the molecule structure of electron transfer of the organism changes, in order to achieve color change. This discoloration is not only colorful material, and can be achieved from "colored === colorless" state of color change, which is a heavy metal complex salt complex type and reversible temperature change of liquid crystal substances are not available.
Microencapsulation reversible temperature change substance called reversible temperature change color pigments, the pigment particles cylindrical spherical, with an average diameter of 2 to 7 microns (one micron equals one thousandth millimeter). Its interior is color material, the external layer is 0.2 to 0.5 microns thickness neither dissolved nor melted transparent shell, which is protected from erosion color material other chemicals. Therefore, to avoid damage to this layer of the shell is very important in use.
1, temperature change basic colors: 2, temperature change basic temperature: -5 ℃, 0 ℃, 5 ℃, 10 ℃, 16 ℃, 21 ℃, 31 ℃, 33 ℃, 38 ℃, 43 ℃, 45 ℃, 50 ℃, 65 ℃, 70 ℃, 78 ℃. 3, temperature change with increasing temperature can be dropped repeatedly will change color. (To 31 ℃ red, for example, more than 31 ℃ discoloration in the form of colorless presented below 31 ℃ is red). 4, temperature change color microcapsules containing particles, particle size between 1 ~ 10UM, and has a high temperature, oxidation and other changes in the characteristics of capsules.
The temperature change product design to high-temperature environment and changes color as the demands of low-temperature environment, and mostly applied to the body temperature of the series, but also can use the security design.
Temperature change powder Application: 1, temperature change photoluminescent pigments microencapsulated powder was feeling reversible temperature change substance called reversible temperature-sensitive color pigments (commonly known as: temperature change color, temperature or temperature change powder pink). 2, can be used in a polypropylene (PP), soft PVC (S-PVC), AS, ABS and silica gel transparent or translucent plastic injection molding, extrusion molding. Can also be mixed with unsaturated polyester, epoxy, acrylic or nylon single body casting, molding, curing inks suitable substrate. 3, for injection molding, extrusion molding or machining, molding, curing time, color pigments in an amount of 0.4 to 3.0% of the amount of plastic is usually 0.6 to 2.0%. Color pigments mixed with plastic particles to fully uniform (you can use a small amount of white oil mixed). If an ordinary paint and color pigments mixed colors, the common pigment (or dye) is about 0.5-2.5% of the amount of color pigment.
Masterbatch: When mass color pigments may be added to the first or polystyrene wax, polyethylene wax having pigment content of 10% of the masterbatch, and then mixed with the use of plastic particles. This allows a more uniform dispersion of the pigment color. Preparation masterbatch can refer to the technical information provided by the Division. Temperature: processing temperature should be controlled below 200 ℃, photoluminescent powder the maximum should not exceed 230 ℃, heating time and minimize the material. (High temperature, prolonged heating will damage the color properties of the pigment).
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