Bluesil™ RTV 3460 A

Bluesil™ RTV 3460 A is a silicone elastomer which cures at room temperature by a polyaddition reaction (10:1 ratio). It is designed as a high durometer rubber offering high mechanical strength and a long mold life.

Principal: Elkem Silicones USA Corp.

Chemical Family: Silicones

End Uses: Casting Resin, Furniture, Industrial Castings, Polyether PU Foams, Prototyping, Urethane Foam

Features: High Mechanical Strength, Mechanical Resistance

Applicable Processes: Molding Applications

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Enhanced TDS

Identification & Functionality

Features & Benefits

Industrial Additives Features
Materials Features
Product Benefits
  • Outstanding mechanical resistance at high durometer.
  • Resistance to common casting resins.
  • Low density.
  • Excellent details reproduction.

Applications & Uses

Applicable Processes
Compatible Polymers & Resins
Industrial Additives End Use
Plastics & Elastomers End Uses
Markets
Applications
Application and Usage Information
  • Usage Information:
    • Remix each of the two components (parts A and B) every time before using.
    • Mixing of the two components:
      • Add 100 parts of Bluesil™ RTV 3460 A  to 10 parts of Bluesil™ RTV 3460 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.
    • Degassing
      • After mixing BLUESIL RTV 3460 A&B, it is recommended to eliminate entrapped air. If the processing is done with the help of a mixing machine both parts are degassed before mixing.
      • The BLUESIL RTV 3460 A&B is degassed under a vacuum of 30 to 50 mbar. Under vacuum, the product expands 3 at 4 times its initial volume and forms bubbles on its surface. These bubbles will disappear gradually and the mixture will sink back down to its initial volume within 5 minutes. Release the vacuum and repeat the operation a few minutes later.
      • Remark: release the vacuum several times improves the degassing. For easier degassing only fill a recipient to 1/3 of its height.
    • Cross linking
      • The best curing conditions are at 23°C. The use of products at higher temperatures will reduce the pot life and increase the setting rate. As opposed to this, lower temperatures will increase the pot life and decrease the setting time. It is recommended not to use the product at temperatures below 20°C; under these conditions, the final product performance levels will be difficult to achieve.
      • At 23°C, the molds can be demolded after 16 hours. In order to achieve the best possible performance levels from the molds; it is preferable to wait for 24 hours before using them.
      • Room temperature curing assures the lowest possible shrinkage, if accelerated cure is desired, mild heat should be preferred. To minimize shrinkage cure the elastomer at maximum temperature of 60°C for 3-4 hours, higher temperatures will cause higher shrinkage.
      • Conversely at lower temperature polymerization is much slower, at 20°C 36 hours may be necessary to complete cross-linking.
      • Be aware that contact with certain materials can inhibit the curing of this RTV:
        • Natural rubbers vulcanized with sulfur
        • Polycondensation RTV catalyzed with metal salts
        • PVC stabilizing agents
        • Amine cured epoxies
        • Sulfur containing clays.
      • If doubts exist it’s recommendable to run a quick test with a small quantity of material in order to assess compatibility. Take duly note that 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.
  • Product Application: This product is specifically formulated for use with casting materials and urethane foams for architectural, prototyping and furniture molding applications. Bluesil™ RTV 3460 A and Bluesil™ RTV 3460 B is also used in high pressure applications (PU Foam, RIM).

Properties

Physical Form

Packaging & Availability

Packaging Type

Principal Information

Group Principal Number
S002177
Principal

Storage & Handling

Storage and Shelf Life Information
  • When stored in its original packaging, Bluesil™ RTV 3460 A may be stored at a temperature below 40°C / 104°F for up to 18 months from its date of manufacturing.

Other

Appearance
Viscous fluid
Color (SDS)
Colorless
Insoluble in (SDS)
Water
Item Number
Miscible in (SDS)
Diethyl ether
Odor (SDS)
Odorless
Oxidizing Properties (SDS)
Not oxidizing
USA/DOT UN Number
Not Applicable
Shelf Life & Stability
ValueUnitsTest Method / Conditions
Shelf Life18.0 momo
Mechanical Properties
ValueUnitsTest Method / Conditions
Elongation230.0 %%after curing 60 minutes at 175°C bluesil™ rtv 3460 a and bluesil™ RTV 3460 B, at break
Hardness58.0 Shore AShore AShore Durometer Scale
Tear Strength25.0 kN/mkN/mBluesil™ RTV 3460 A and Bluesil™ RTV 3460 B
Tensile Strength6.0 MPaMPa
Physical Properties
ValueUnitsTest Method / Conditions
Density1.2 g/mLg/mL
Viscosity95000.0 mPa.smPa.sISO 3219 at 23°C
Viscosity65000.0 mPa.smPa.sISO 3219 at 23°C, Bluesil™ RTV Pt catalyst 100 parts, Bluesil™ RTV 3460 B 10 parts, mixed
Application Information
ValueUnitsTest Method / Conditions
Linear Mold Shrinkagemax. 0.1 %%Bluesil™ RTV 3460 A and Bluesil™ RTV 3460 B
Pot Life210.0 mmat 23°C, Bluesil™ RTV Pt catalyst 100 parts, Bluesil™ RTV 3460 B 10 parts
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Density (SDS)1.2 kg/dm³kg/dm³at 20°C
Flash Point (SDS)min. 190.0 °C°CASTM D56
Kinematic Viscosity (SDS)79000.0 mm²/smm²/sAt 20°C