SikaBiresin® UR132

Elastomeric casting resin for foundry pattern making

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SikaBiresin® UR132 is a 2-component polyurethane elastomeric casting resin for foundry pattern making.  

  • Both components without toxic classification
  • Simple hand casting without post curing
  • Very high abrasion resistance
  • Insensitive to moisture
  • Short demolding time without brittleness phase
  • High tensile strength and elongation
 
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Overview

PRODUCT BENEFITS

  • Both components without toxic classification
  • Simple hand casting without post curing
  • Very high abrasion resistance
  • Insensitive to moisture
  • Short demolding time without brittleness phase
  • High tensile strength and elongation
 

Areas of Application

SikaBiresin® UR132 is designed for casting of high tear and impact resistant parts and tools, e.g. core boxes and match plates.
The Product is also well suited for casting of tough-hard coatings.
This product is suitable for experienced professional users only. Tests under actual processing conditions and with additional materials such as coatings and release agents must be performed to proof material compatibility.  

Packaging

     

SikaBiresin® UR132 (A)

Canister

5 kg

10 kg

SikaBiresin® UR132 (B)

Canister

2 kg

8 kg

 

Product Details

Properties

SikaBiresin® UR132 (A)

SikaBiresin® UR132 (B)

Chemical base

Isocyanate prepolymer

Amine

Color

 

mixed

Yellowish-transparent

Beige

Beige

Density

 

cured

1.10 kg/l

1.15 kg/l

1.15 kg/l

Mixing ratio

by weight

100 : 40

Viscosity (CQP029-4)

 

mixed

14 000 mPa·s

270 mPa·s

8000 mPa·s

Pot life (CQP021-4)

500 g at 23 °C

16 minutes

Demolding time

16 hours

Recommended casting thickness

6 – 8 mm

Curing time

at 23 °C

5 days

Shore D hardness (CQP023-1 / ISO 868)

62 A

Tensile strength (CQP036-6 / ISO 527)

50 MPa A

Elongation at break (CQP036-6 / ISO 527)

330 % A

Abrasion resistance (CQP112-1 / ISO 4649)

70 mm3 A

Shelf life

12 months

CQP = Corporate Quality Procedure

A) curing condition: 23 °C for 7 days

Application

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.
If using wood as support core or PUR foam boards with low to middle density, a previous sealing is necessary.
The compatibility of the sealing on PUR foam must be tested separately.

STORAGE CONDITIONS

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

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