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SikaBiresin® F190

Unfilled fastcast resin with low shrinkage

SikaBiresin® F190 is an unfilled fast curing 2-component polyurethane system which can be used for small parts. For larger parts, the product can be filled with SikaBiresin® AX150.  

  • Low viscosity
  • Low shrinkage
  • Adjustable filler content
  • Good flow behavior even with high-rate filler
  • User friendly mixing ratio
  • Filled with SikaBiresin® AX150 to limit exothermic reaction and get easy machining
 
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PRODUCT BENEFITS

  • Low viscosity
  • Low shrinkage
  • Adjustable filler content
  • Good flow behavior even with high-rate filler
  • User friendly mixing ratio
  • Filled with SikaBiresin® AX150 to limit exothermic reaction and get easy machining
 

Areas of Application

Unfilled version of SikaBiresin® F190 is designed for casting of negatives, molds masters and mock-ups. 
The filled version of the Product is suitable for higher volume castings. The filler reduces the exothermic reaction as well as the shrinkage.
This product is suitable for experienced professional users only.   

Packaging

      

SikaBiresin® F190 (A)

Canister

4.5 kg

18 kg

SikaBiresin® F190 (B)

Canister

4.5 kg

18 kg

SikaBiresin® AX150

Bag

25 kg

 

Product Details

Typical Product Data
Properties

SikaBiresin® F190 (A)

SikaBiresin® F190 (B)

 SikaBiresin® 
 AX150

Chemical base

Polyol, unfilled

MDI-based isocyanate, unfilled

Aluminum hydroxide powder

Color

 

mixed

Beige

Beige

Amber

 

White

Beige

Density

 

cured

0.99 kg/l

1.07 kg/l

1.11 kg/l

 

2.4 kg/l

1.67 kg/l A

Mixing ratio

by weight

100 : 100 : (360) B

Viscosity (CQP029-4)

 

mixed

80 mPa·s

125 mPa·s

110 mPa·s

 

2000 mPa·s A

Pot life (CQP021-4)

200 g at 23 °C

7 min. 30 sec.

11 min. A

Demolding time

10 mm thickness

40 mm thickness, filler

180 minutes

105 minutes A

Curing time

at 23 °C

3 days

Shore D hardness (CQP023-1 / ISO 868)

68 C

76 D

Compressive strength (CQP028-5 / ISO 604)

35 MPa C

47 MPa D

Flexural strength (CQP027-2 / ISO 178)

40 MPa C

30 MPa D

Flexural modulus (CQP027-2 / ISO 178)

1250 MPa C

4000 MPa D

Impact resistance (CQP038-2 / ISO 179)

20 kJ/m2 C

4 kJ/m2 D

Linear shrinkage (CQP014-5)

10 mm thickness

40 mm thickness, filler

5.5 mm/m

3.5 mm/m A

Coefficient of thermal expansion (CQP053-1 / ISO 11359)

15 °C to 90 °C

155 x 10-6 1/K C

90 x 10-6 1/K D

Glass transition temperature TMA (CQP053-1 / ISO 11359)

90 °C C

93 °C D

Shelf life

12 months

12 months

24 months

CQP = Corporate Quality Procedure

A) Filler 360 parts

B) Filler 0 to 360 parts
C) post curing: 16 hours at 70 °C / 100 : 100 : 0D) post curing: 16 hours at 70 °C / 100 : 100 : 360

Application

Application Information

Surface preparation

The material, processing and mold or master-model temperature shall be between 18 °C – 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.

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