Silicone Condensation DC 3481 R (Medium Hard, Dry)
- Good liquid (self-deairing)
- Easy to mix
- After curing strongly
- Low shrinkage (<0.3%)
- Colour White
The silicone Condensation DC 3481 with the catalyst 3081 R is a professional 2-component (poly-condensation curing) castable molding silicone which cures at room temperature. The silicone has a good fluidity and gives great detail while still remaining strong. Silicone DC 3481 R is excellently suited for the casting of eg cement, plaster, wax, soap, and many other casting materials but also for aggressive resins like poly urethane, epoxy and polyester.
- Mixing ratio in weight: A:B = 100:5
- Pot life at 23°C: 90-120 minutes
- Viscosity mixture at 23°C: 20,000 mPa⋅s
- Hardness: Shore A 18~21
- Tensile strength: 46 Kg/cm2
- Tear strength: 26 Kg/cm
- Extensability till break: 622%
- Linear shrinkage: 0.2-0.4%
- Demold time max: 24 hours
- Full strength after: 3 days
Note: Pot life and de-mould time are highly dependent on the mixing ratio and Humidity! By adding more than 5% silicone B (hardener) or at high humidity, the pot life and de-mould time are shorter.
The silicone DC 3481 with catalyst 3081 R can easily be mixed by hand or by machine. Mix the A and B component carefully and in the indicated ratio (preferably 5%, you can add between 4 and 6% B comp)
Example: To 1 kg of A-Comp add preferably 50 grams of B-component. You can vary between 40 grams (4%) up to 60 grams (6%). Less or more will inhibit cure or alter the final properties of the rubber.
At 4%, the silicone will take longer to harden giving air bubbles more time to escape. With 6% B component the silicone will cure considerably faster. Process the mixture in the pot life and never take more than you can handle within pot-life.
Only de-mould after a complete cure. If you wish to make a mold by using a brush or spatula you need to add a 3rd component (0.6% -2% Thixo C). Typically 1% will do the trick. Thixo C thickens the mixture and makes it possible to set up the silicone agains vertical surfaces. Please be aware that the mold in this case must be provided with a support cap. This support cap may consist of gypsum bandages or epoxy support cover or acrylic resin with glass fibre fabric.
Provided that the silicone is kept in a sealed package and stored cool and frost-free, the shelf life is at least 1 year.
If you frequently work with the silicone is recommended to wear during processing gloves and properly ventilate the area. For safety instructions, see always the safety data sheet.
Further important safety information:
H317 May cause an allergic skin reaction.
H373 May cause damage to organs (Bladder, Kidney) through prolonged or repeated
exposure if swallowed.
P-Code Precautionary Statements
P260 Do not breathe dust/ fume/ gas/ mist/ vapours/ spray. P280 Wear protective gloves.
P314 Get medical advice/ attention if you feel unwell.
P333 + P313 If skin irritation or rash occurs: Get medical advice/ attention. P362 + P364 Take off contaminated clothing and wash it before reuse.
P501 Dispose of contents/ container to an approved waste disposal plant.