SikaBiresin® G32

Epoxy casting resin for backfilling applications

SikaBiresin® G32 is a 2-component epoxy casting resin with good flow behavior for backfilling applications.
The Product is applicable with high admixture of filler, e.g. with aluminum grit up to 100 : 100 parts per weight on component A.  

  • Good flow behavior
  • Good mechanical properties
  • Long pot life
  • Casting thickness up to 40 mm unfilled, depending on thermal conductivity of the mold material
  • Low viscosity
 
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Overview

PRODUCT BENEFITS

  • Good flow behavior
  • Good mechanical properties
  • Long pot life
  • Casting thickness up to 40 mm unfilled, depending on thermal conductivity of the mold material
  • Low viscosity
 

Areas of Application

SikaBiresin® G32 is designed for backfilling applications for foundry patterns and molds.
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® G32 (A)

Pail

5 kg

SikaBiresin® G40 (B)

Canister

2.5 kg

 

Product Details

Properties

Component A

SikaBiresin® G32

Component B

SikaBiresin® G40

Chemical base

Epoxy resin, filled

Amine, unfilled

Color

 

mixed

Green

Colorless

Green

Mixing ratio

by weight

100 : 7

Density

 

cured

1.7 kg/l

0.87 kg/l

1.6 kg/l

Viscosity (CQP029-4)

 

mixed

14 000 mPa·s

10 mPa·s

2100 mPa·s

Pot life (CQP021-4)

at 23 °C

70 minutes

Demolding time

24 hours

Maximum casting thickness

40 mm

Shore D hardness (CQP023-1 / ISO 868)

90 A

Flexural strength (CQP027-2 / ISO 178)

70 MPa A

Flexural modulus (CQP027-2 / ISO 178)

6100 MPa A

Impact resistance (CQP038-2 / ISO 179)

8 kJ/m2 A

Compressive strength (CQP028-5 / ISO 604)

112 MPa A

Linear shrinkage (CQP014-5)

500 x 40 x 25 mm

0.12 % A

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

51 °C A

Shelf life

18 months

12 months

CQP = Corporate Quality Procedure

A) curing condition: 23 °C for 7 days

Application

Surface preparation

The material, processing and mold or mastermodel 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 properly sealed prior applying the release agent.
Wax-based release agents are recommended. 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.

STORAGE CONDITIONS

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

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