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eSUN Temperature Color-Changing (Thermochromic) Technology integrates microencapsulated thermochromic pigments into premium 3D printing base materials (such as PLA and TPU). As external temperatures cross specific thermal thresholds, the molecular arrangement of the pigment shifts, causing vivid, reversible color transitions.
Utilizes micro-encapsulated organic dyes that switch between colored and colorless states through electron transfer when heat is applied.
The color change process is completely reversible. When the ambient temperature drops back, the material seamlessly returns to its initial hue.
Formulated to trigger near human body temperature (~31°C / 88°F) or hot beverage thresholds, offering clear visual feedback.
Designed for smooth printing, durability, and vibrant visual appeal, eSUN's temperature-change filaments combine aesthetic versatility with engineering precision.
High-saturation transitions (e.g., Purple to Pink, Dark Green to Light Yellow) ensure crisp and instant visual recognition.
Responds rapidly to temperature shifts caused by human touch, warm liquids, or ambient climate changes.
Maintains standard PLA printing characteristics with minimal warping, strong layer adhesion, and low odor.
eSUN offers various thermochromic filaments catering to diverse aesthetic and structural requirements.
| Product Name | Base Material | Color Transition Range | Transition Trigger |
|---|---|---|---|
| ePLA-Temp-Change Purple to Pink | PLA | Purple (< 31°C) → Pink (> 31°C) | Touch / Warm Water |
| ePLA-Temp-Change Green to Yellow | PLA | Dark Green (< 31°C) → Bright Yellow (> 31°C) | Touch / Sun/Ambient Heat |
| eTPU-Temp-Change | TPU (Flexible) | Blue (< 31°C) → White (> 31°C) | Body Heat / Friction |
Temperature-change materials offer functional utility alongside decorative charm across multiple industries.
Hot drink coasters, temperature-sensing cups, tea pets, and bath bath toys that signal thermal safety or readiness.
Action figures, chameleon models, custom keychains, and interactive fidget toys that change color upon touch.
STEM teaching aids demonstrating thermodynamics, conduction, heat transfer, and physical chemistry principles.
| Parameter | Recommended Value | Notes |
|---|---|---|
| Nozzle Temperature | 190°C - 220°C | Standard PLA printing range. Avoid exceeding 230°C to prevent pigment degradation. |
| Bed Temperature | 45°C - 60°C | Bed heating may cause initial color change during early print layers. |
| Printing Speed | 40 - 100 mm/s | Adjust based on printer capability and overhang geometry. |
| Cooling Fan | 100% | Full fan speed ensures clean details and proper layer cooling. |