Thermobatch® is a range of temperature sensitive thermochromic monobatches which change from coloured to colourless as the temperature rises. After the temperature is reduced, the colour reappears again.
Thermobatch is supplied in Powder Concentrate form or as a finished pellet form and is ideally suited for use in Polyolefins, PS, PVC and ABS.
The capsules are individual droplets of chromogenic material with an impervious polymeric wall. The particle size is below 6 micron. The microcapsule wall can withstand most standard mixing and application procedures. If too much shear energy is used (e.g. bead mills) the microcapsules can be crushed, therefore, the ChromaZone and the thermochromic functionality will be destroyed.
Colour changing effects can be varied infinitely by blending Thermobatch with other transulcent or opaque masterbatches.
Image sources: www.wellpromo.com, http://chromazone.co.uk
The color changing reaction can be disrupted by several external influences such as:
- High exposure to UV light;
- Presence of polar solvents;
- Very high temperatures.
In the image below you may see how the color changes.
Image source: www.colorchange.com
Color state
If the temperature is below the melting point of the solvent, the color forming components are in contact. Due to electron interaction a visible color occurs.
Colorless state
if the temperature is above the melting point of the solvent, the color forming components are separated. Therefore no electron interaction and no visible color occurs.
Image sources: http://vv-wine.com, www.drinkpromo.com, www.alibaba.com
Examples of current applications are:
- Plastic cups;
- Packaging containers;
- Kitchen appliances;
- Drinking straws;
- Baby Feeding spoons;
- Drink stirrers / swizzle sticks.
Gracias por sus comentarios perspicaces. Espero visitar su sitio web en breve.
This is a fantastic post. I’m always looking for smart resources to show clients and coworkers, and your post is definitely worth sharing!