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SikaBiresin® F46

Filled polyurethane casting resin with long pot life for casting of thick sections

SikaBiresin® F46 is a filled fast curing 2-component polyurethane system with long pot life for casting of thick sections.  

  • Good flow behavior and good degassing
  • Casting of thick sections and true-to-size curing
  • Low odor
  • Long pot life and low reaction temperature
  • Good mechanical properties
  • Cured moldings can be machined
 
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PRODUCT BENEFITS

  • Good flow behavior and good degassing
  • Casting of thick sections and true-to-size curing
  • Low odor
  • Long pot life and low reaction temperature
  • Good mechanical properties
  • Cured moldings can be machined
 

Areas of Application

SikaBiresin® F46 is designed for manufacturing of master and core models, negatives and foundry patterns.
The Product is also well suited for control moldings and copy models.
This product is suitable for experienced professional users only.  

Packaging

    

SikaBiresin® F46 (A)

Hobbock

20 kg

SikaBiresin® F46 (B)

Canister

5 kg

 

Product Details

Typical Product Data
Properties

SikaBiresin® F46 (A)

SikaBiresin® F46 (B)

Chemical base

Polyol, filled

MDI-based isocyanate, unfilled

Color

 

mixed

Beige

Brown-transparent

Beige

Density

 

cured

1.8 kg/l

1.22 kg/l

1.7 kg/l

Mixing ratio

by weight

100 : 25

Viscosity (CQP029-4)

 

mixed

20 000 mPa·s

200 mPa·s

3000 mPa·s

Pot life (CQP021-4)

200 g

40 minutes

Demolding time

16 hours

Shore D hardness (CQP023-1 / ISO 868)

87 A

Tensile strength (CQP036-2 / ISO 527)

25 MPa A

Elongation at break (CQP036-2 / ISO 527)

2 % A

Compressive strength (CQP028-5 / ISO 604)

110 MPa A

Flexural strength (CQP027-2 / ISO 178)

65 MPa A

Flexural modulus (CQP027-2 / ISO 178)

6500 MPa A

Impact resistance (CQP038-2 / ISO 179)

6 kJ/m2 A

Linear shrinkage (CQP014-5)

500 x 40 x 40 mm

0.06 % A

Heat deflection temperature (CQP030-1 / ISO 75B)

50 °C A

75 °C B

Shelf life

12 months

CQP = Corporate Quality Procedure

A) curing condition: after demolding 7 days at 23 °C

B) post curing: 8 hours at 80 °C

Application

Application Information

Surface preparation

The material, processing and mold or master-model temperature shall be between 18 °C and 25 °C.
Make sure the mold or master model is clean, dry, dust and grease free.
If mold or master-model surface is porous, it must be sealed prior applying the release agent.
It is recommended to use wax-based release agents. For further information regarding Sika release agent consult the corresponding Product Data Sheet.

Application

Immediately after mixing pour the Product into the mold starting at the deepest point.
Demolding time may vary depending on casted thickness and room temperature.
Further post curing of the demolded part can improve the final mechanical properties.
Depending on the geometry and weight of the part, it is recommended to use a conformer while post curing.

STORAGE CONDITIONS

Both components must be stored at temperature between 15 °C and 25 °C in original unopened containers.