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Frequently Asked Questions
What is HTV silicone?
HTV (High Temperature Vulcanising) silicones are single-component elastomers designed to withstand high temperatures, mechanical stress, and repeated cycles.
They are used to manufacture reusable membranes, inflatable bladders and flexible tools for vacuum forming.
What is the difference between cured silicone and raw silicone?
- Vulcanised: already cross-linked, ready for use, ideal for cutting or direct fabrication.
- Unvulcanised: not cross-linked; allows for specific shaping or parts requiring custom processing before vulcanisation.
Are Diatex HTV silicones reusable?
Yes. They are specifically designed to produce reusable membranes for composite cycles, which reduces consumables and production costs.
How do I choose the right shore hardness for my application?
- Diasil 45: high elongation, ideal for inflatable bladders and highly flexible membranes
- Diasil 50: versatile, PTFE-compatible, ideal for reusable membranes
- Diasil 60: excellent chemical and thermal resistance for complex geometries
- Diasil 70: high stiffness for high-stress tooling or bladders requiring stability
The choice depends on the geometry, the applied pressures, and the type of cycle.
Can HTV silicones be used for inflatable bladders?
Yes. The Diasil 45, 50, and 70 are particularly well-suited for this application thanks to their combination of elasticity, strength, and heat resistance.
Which surface should you choose for the Diasil 50: smooth, textured, or PTFE?
- Smooth: easy to clean, highly versatile
- Textured: improved air evacuation for certain processes
- PTFE: Optimal non-stick properties, for molding delicate or sticky parts
