Siraya Tech Defiant Technical Data (10A/15A/25A)
1. Introduction
Defiant Series (10A, 15A, 25A), a premium line of ultra-flexible platinum-cure silicones designed specifically for high-performance mold making. Co-developed with professional prop makers, Defiant silicone features exceptional resistance to curing inhibition and is food safety certified.
Ideal for:
- Edible Molds: Chocolates, candies, fondants, ice, etc.
- DIY & Crafts: Soap, candle, wax, and plaster molds.
- 3D Printing model making: Resist inhibition from UV resin prints. (See adaptation list below)
- Industrial Prototyping: Soft-touch components, gaskets, and industrial-grade parts.
2. Technical Data
|
Mechanical Properties |
Defiant 25 |
Defiant 15 |
Defiant 10 |
|
Mix Ratio By Volume |
1A:1B |
1A:1B |
1A:1B |
|
Mix Ratio By Weight |
1A:1B |
1A:1B |
1A:1B |
|
Pot Life @ 25℃ |
15 min |
15 min |
15 min |
|
Cure Time @ 25℃ |
4 - 6 h |
4 - 6 h |
4 - 6 h |
|
Shore Hardness A |
25 |
15 |
10 |
|
Specific Gravity (g/cc) |
1.1 |
1.1 |
1.1 |
|
Tensile Strength (Mpa) |
6 |
5.5 |
4.5 |
|
100% Modulus (psi) |
45 |
35 |
28 |
|
Elongation at Break (%) |
550 |
650 |
800 |
|
Die B Tear Strength (K N/m) |
20 |
15 |
12 |
|
Useful Temperature (min) ℃ |
-45 |
-45 |
-45 |
|
Useful Temperature (max) ℃ |
200 |
200 |
200 |
|
Shrinkage (in. / in.) |
0.1 |
0.1 |
0.1 |
|
Mixed Viscosity (pcs) |
12000 |
9000 |
6000 |
|
Specific Volume (cu. in./lb.) |
25 |
25 |
25 |
|
Mix Density (g/cm³) |
1.1 |
1.1 |
1.1 |
3. Compatible resins
Siraya Tech Fast, Build, Blu, or Sculpt resins, as they require no additional coating.
4. Resin Master Model Post-Processing
To ensure Defiant silicone works perfectly with resin prints, follow these critical preparations.
|
Action |
Method & Details |
|
Clean |
Wash with 90%+ IPA/Ethanol. Use an ultrasonic bath (5 mins) or a hair-based brush to remove all uncured resin. |
|
Dry |
Use a hairdryer to ensure the print is completely dry. |
|
Water Cure |
Critical: Cure for at least 30 minutes under a UV light fixture while submerged (do not use sunlight). |
|
Dry |
Use a hairdryer to ensure the print is completely dry. Or use a low-heat oven set to 45°C for 10 minutes.（Recommend） |
|
Ready |
Your master model is now ready for the mold-making process. |
5. Defiant Silicone Mixing & Pouring Step
The Defiant series is a two-part platinum silicone with a 1:1 mix ratio.
|
Action |
Method & Details |
|
1. Preparation |
Mother mold and clean containers; glass is preferred as it does not inhibit curing. |
|
2. Bottle Mixing |
Stir Part A and Part B thoroughly inside their respective bottles before pouring to ensure consistency.
|
|
3. Measurement |
Use a scale to measure Part A and Part B at a 1:1 ratio by weight. |
|
4. Thorough Mixing |
Combine both parts and mix thoroughly, making sure to scrape the walls and bottom of the container. |
|
5. Degassing |
While Defiant releases bubbles quickly, vacuum degassing is recommended for the best professional results. |
|
6. Pouring |
Pour or brush the mixture over your master model to create the mold. |
6. Curing & Environmental Recommendations
- Operating Temperature: Recommended for use indoors at temperatures above 20°C.
- Pot Life: Approximately 15 minutes.
- Full Cure Time: 4–6 hours (at 25°C ambient temperature).
- Compatibility: Guaranteed for Siraya Tech resins; 3rd party resins may work but have not been specifically tested.
7. Troubleshooting
- Silicone remains tacky or liquid near the print surface
This is a classic sign of silicone poisoning. Ensure you follow the water-submerged curing step precisely for at least 30 minutes. If 30 minutes is insufficient, extend the curing time, typically to 30-60 minutes.
- Localized uncured spots
Often caused by residual resin in deep recesses. For complex models, increase the water-curing time and ensure all IPA has evaporated before pouring silicone.
- Silicone cures too slowly
Please check your ambient temperature; Defiant requires an indoor environment above 20°C for optimal curing speed.
- Incomplete cure throughout the mold
Ensure Part A and Part B were mixed at a strict 1:1 weight ratio and stirred thoroughly, scraping the sides and bottom.
- Bubbles in the final mold
While the formula releases bubbles quickly, you may need to degas using a vacuum chamber if working in temperatures below 20°C.
- 3rd party resins compatibility is not guaranteed
We cannot guarantee results with non-Siraya Tech resins. If poisoning occurs with other brands, try applying a specialized primer coating or switch to Siraya Tech Fast, Build, Blu, or Sculpt.