Unlike platinum silicone rubbers (Dragon Skin® or Smooth-Sil® products) which can be heat cured, tin-cured silicones do not respond to heat. Your only option is to add a chemical to accelerate the silicone.
Adding Accel-T® dramatically reduces the working time (pot life) and demold time of Mold Max® silicone rubbers. A small amount will speed up the material considerably. Accel-T® should be added to Part B by weight and thoroughly pre-mixed before adding Part A.
Very Important – Accel-T® will reduce the library life of the cured rubber mold in proportion to the amount used. For example, Mold Max® 30 normally has a library life of at least 5 years. Using 1% Accel-T® will reduce the library life to less than 1 year.
Note: Accel-T® does not have an effect on platinum-based silicones.
The following offers percentages of Accel-T® and the corresponding effects on pot-life and demold time:
| Mold Max® 10 | Mold Max® 20 | Mold Max® 30 | Mold Max® 40 | ||
|---|---|---|---|---|---|
| 0.2 % Accel-T® |
Pot Life | 20 min. | 15 min. | 15 min. | 15 min. |
| Cure Time | 3 hr. | 2 hr. | 3 hr. | 2 hr. | |
| 1 % Accel-T® |
Pot Life | 10 min. | 5 min. | 7 min. | 8 min. |
| Cure Time | 1 hr. | 1 hr. | 1 hr. | 1 hr. | |
Note: Full chart can be found on the Accel-T® Technical Bulletin.