Remix each of the two components (part A and B) every time before using.
1. Mixing of the two components
Add 100 parts of BLUESIL RTV 3535 A to 100 parts of BLUESIL RTV 3535 B. The two components may be intimately mixed either by hand or using a low-speed electric or pneumatic mixer to minimize the introduction of air into the mixture.
Since this product cures very quickly it is advisable to process the material using an automatic dosing machine, the use of such an equipment prevents air from introducing during the mixing into the two parts, which have been previously degassed just upon production. If no automatic equipment is available, then it is recommended to degas the mixed product in order to eliminate the air introduced during the mixing BLUESIL RTV 3535 A&B is degassed under a 30 to 50 mbar vacuum. When the vacuum is applied the product expands 3-4 times its initial volume and bubbles form on the surface. Once bubbles disappear, the mixture collapses back to its initial volume. To complete degassing simply wait few minutes before releasing the vacuum, the product will then be ready to use.
Remark: release the vacuum several times improves the degassing. For easier degassing only fill a recipient to 1/3 of its height. Pour the degassed material slowly in a steady stream from one edge of the mould box so that the material flows evenly over the model minimizing the entrapment of air bubbles under the flowing rubber.
3. Cross linking
At room temperature (23°C) BLUESIL RTV 3535 A&B completes curing in approximately 24 hours regardless the thickness of the sleeve.
Be aware that contact with certain materials can inhibit the curing of this RTV:
• Natural rubbers vulcanized with sulphur
• Polycondensation RTV catalysed with metal salts
• PVC stabilizing agents
• Amine cured epoxies
• Sulphur containing clays.
If doubts exist it is recommended to run a quick test with a small quantity of material in order to assess compatibility. Take duly note that the cross contamination due to not well cleaned tools or devices is frequently the main cause of inhibition. The best way is to use only dedicated gear when processing polyaddition RTVs.
|BLUESIL RTV 3535 A may be stored at a temperature below 40 °C/ 104 °F for up to 12 months from its date of manufacturing.||Please consult the Safety Data Sheet of this product.|
BLUESIL RTV 3535 A
The BLUESIL RTV 3535 A&B – is a two component, silicone elastomer which cures at room temperature by a polyaddition reaction (1:1 ratio).
The BLUESIL RTV 3535 A&B is available in two colours: WHITE and TRANSLUCENT.
2 Part RTV
- High fluidity
- Fast curing
- Good mechanical properties
- Low linear shrinkage
- No release of toxic substances during and after curing
The BLUESIL RTV 3535 A&B is specifically formulated to produce the silicone external layer of printing rollers, used for ceramic tiles printing application.
The product can find application also for general moldmaking, where a medium hardness is required.
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