Description
TROLLFACTORY - Type 17 - Moulding silicone Shore 20 - 1kg
TFC Silicone Rubber Type 17 RTV NV whitish Shore 20 condensation 100:5
Condensation-curing 2-component silicone rubber that vulcanises at room temperature.
TFC Silicone Rubber Type 17 is very well suited for the production of sophisticated, elastic and durable moulds with pronounced undercuts.
TFC Silicone Rubber Type 17 can be used to produce single- or multi-part moulds for casting original models made of wood, glass, metal, plastic, wax or ceramic casting compounds.
You can use all water-soluble casting materials in the moulds produced, such as relief casting compounds like Stewalin, Plastalin Super, Keraflott or plaster, Keramin, Alabit, modelling and model-making plaster, casting clay, cement, concrete, etc.
Soap moulding compounds (soap glycerine) for making your own soap or waxes for candle-making are also easily used, as is casting with casting resins.
Due to its favourable pricing, longer working time and high durability, TFC Silicone Type 17 is the preferred choice for casting larger models (garden figures, tiles) or for casting with more aggressive materials such as concrete.
As it is a condensation-curing silicone, any inhibition problems are significantly minimised.
Properties and application:
- easy to work with
- Mix the components 100:5 by weight
- very good flowability, mixture is easy to pour
- whitish (silicone) and transparent (cross-linking agent)
- Cross-linking to form a durable, rubber-elastic vulcanised compound without exothermic reaction
- Temperature-resistant up to 200 degrees Celsius
- High chemical resistance to aggressive components of certain
types of plastic
- Good tear resistance (wear and tear)
- High level of detail reproduction for very small features
- High dimensional stability over a long period and non-deformable
- Excellent non-stick properties
Further product information:
Colour: whitish (Component A) and colourless (Component B)
Mixing ratio: 100:5 by weight
Specific gravity: 1.19
Viscosity 25,000 mPas
Working time (pot life) at 23 degrees Celsius approx. 90 minutes
Curing time at 23 degrees Celsius approx. 1440 minutes
Shore A hardness after 24 hours 20 +/- 2
Breaking load 2.5 N/mm²
Elongation at break 350 ± 20%
Tensile strength 18.0 ± 2 N/mm
Dimensional change after 24 hours 0.1%
Product advantages at a glance
- Pourable impression silicone
✓ With a Shore A hardness of 20, this vulcanising, liquid impression material is ideal for demanding and rubber-elastic silicone moulds.
- Contents
✓ Highly detailed and odourless duplicating silicone with high tear resistance. Mixing ratio of 100:5 for components A (base) and B (cross-linker).
- Properties
✓ Short-term temperature resistance up to 200°C, no exothermic reaction. With high chemical resistance, dimensional stability and anti-adhesive effect.
Applications
✓ Particularly suitable for producing medium-sized impressions up to 50 cm.
- TFC Troll Factory Silicone 1 x 1 kg, 1 x 0.05 kg
✓ Supplied in a practical plastic container. High-quality ingredients for true-to-life models – Quality Made in Germany.
General application
To produce silicone moulds, you must first determine what you wish to replicate and what casting material the object will be made of. This is of great importance, as there are different types of silicone with varying degrees of hardness and flexibility. Heat resistance is also an important factor. Please refer to the application areas and individual product properties of the silicones in the respective descriptions.
Once you have selected the appropriate silicone, the following materials should be prepared: moulding frame, modelling clay, object to be moulded, pouring container, wooden spoon (or similar), scales, separating vaseline, brush and a knife. Due to the short working times, place these within easy reach right at the start. The moulding frame should then be positioned so that there is at least 2 cm of space between the frame and the object. To seal the mould, roll out a layer of non-hardening modelling clay (e.g. plasticine) onto the base plate; any remaining gaps in the corners must also be sealed. The object can then be brushed with release vaseline and pressed into the compound at the base to secure it.
Next, the selected silicone is mixed in the ratio specified by the manufacturer (usually 1:1 by weight). Using a set of scales, the base (A) and the catalyst (B) can then be mixed in the specified ratio. Both components are then thoroughly mixed together for approx. 1 minute to form a homogeneous mass. The silicone is then poured evenly into the prepared moulding frame.
The final step is curing. Here, the silicone must cure completely within the time specified by the manufacturer, usually at 23°C. Once fully cured, the frame and the modelling clay can be removed. With a soft silicone, the object being moulded can be easily removed from the mould. If a medium-hard silicone has been chosen, it may be necessary to cut it with a knife. The resulting gap can be sealed with rubber during the subsequent casting process. The cured silicone mould can now be filled with various casting materials. These vary depending on the type of silicone rubber selected. Examples include ceramics, plaster, concrete, tin, foodstuffs, etc.
