SikaBiresin® F40

Filled fastcast resin with high abrasion resistance

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SikaBiresin® F40 is a filled fast curing 2-component polyurethane system with high abrasion resistance.  

  • Low shrinkage
  • High abrasion resistance
  • Low viscosity
  • Almost odorless
 
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Overview

PRODUCT BENEFITS

  • Low shrinkage
  • High abrasion resistance
  • Low viscosity
  • Almost odorless
 

Areas of Application

SikaBiresin® F40 is designed for casting of foundry patterns and cold core-boxes, negatives and moldings of medium size.
The Product is also recommended for parts and tools requiring a good abrasion resistance.
This product is suitable for experienced professional users only.  

Packaging

    

SikaBiresin® F40 (A)

Box with tins

6 x 1 kg

SikaBiresin® F40 (B)

Box with bottles

6 x 0.2 kg

 

Product Details

Properties

SikaBiresin® F40 (A)

SikaBiresin® F40 (B)

Chemical base

Polyol, filled

MDI-based isocyanate, unfilled

Color

 

mixed

Blue

Dark amber

Blue

Density

 

cured

1.75 kg/l

1.22 kg/l

1.7 kg/l A

Mixing ratio

by weight

by volume

100 : 20

100 : 29

Viscosity (CQP029-4)

 

mixed, at 1 minute 30 seconds

3000 mPa·s

60 mPa·s

2000 mPa·s

Pot life (CQP021-4)

100 g 

6 minutes

Demolding time

8 mm thickness

60 minutes

Maximum casting thickness

50 mm

Shore D hardness (CQP023-1 / ISO 868)

84 A

Tensile strength (CQP036-2 / ISO 527)

23 MPa A

Tensile modulus (CQP036-2 / ISO 527)

4800 MPa A

Compressive strength (CQP028-5 / ISO 604)

57 MPa A

Compressive modulus (CQP028-5 / ISO 604)

2800 MPa A

Flexural strength (CQP027-2 / ISO 178)

61 MPa A

Flexural modulus (CQP027-2 / ISO 178)

3750 MPa A

Linear shrinkage (CQP014-5)

250 x 50 x 3 mm

1 mm/m A

Abrasion resistance (ISO 5470)

126 mg/100U A

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

97 °C B

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

15 – 110 °C

85 x 10-6 1/K A

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

69 °C A

108 °C B

Shelf life

9 months

12 months

CQP = Corporate Quality Procedure

A) curing condition: 23 °C for 7 days

B) post curing: 24 hours at 80 °C

Application

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.

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