company tower banner
Silicones Inc Company Logo

Silicones Inc GI-739

Silicones GI-739 is a thixotropic (resistant to flow) tin catalyzed silicone designed to be used when painting or spraying onto vertical surfaces.

Polymer Name: Silicone Elastomer

End Uses: Prototyping

Features: Good Elongation, Good Tear Strength, High Tensile Strength, Long Shelf Life, Low Flow, Thixotropic

Technical Data Sheet
  • TypeDocument Name
View All Documents

Knowde Enhanced TDS

Identification & Functionality

Chemical Family
Polymer Name
Technologies

Features & Benefits

Applications & Uses

Markets
Cure Method
Plastics & Elastomers End Uses
Applications

GI-739 does not contain the mold rotting thixoadditives widely used today, but offers the end user the same ease of use and detail reproducibility. When catalyzed with one of our library life extending catalysts (see supplemental products) and stored correctly, a longer life of the cured mold should be expected. Its high tear strength, elongation and tensile strength make it an excellent choice for any mold making application. It is also resistant to inhibition by most common mold making substrates, eliminating the need to use mold sealers.

Properties

Typical Properties
ValueUnitsTest Method / Conditions
ActivatorTeal--
Activator900 - 1100--
Volume100 / 11.1--
Coverage25.2in^3 / lb-
Cure Time (Hours)16 - 18--
Elongation500 ± 50%ASTM D412
Mixed Viscosity300000 - 350000cps-
Mixing Ratio (B/A)100 / 10--
Service Temperature-60 - 350°F-
Hardness (±4)15.0Shore A-
Shrinkage0.1%-
Specific Gravity1.1--
Tear Resistance70 ± 10ppiASTM D624
Tensile Strength275 ± 25psiASTM D412
Viscosity325000 - 400000cps-
Working Time (Hours)1 - 1.5--

Storage & Handling

Shelf Life
6 months