SikaBiresin® G32 GC11

Epoxy resin used as gelcoat for all-purpose applications

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SikaBiresin® G32 GC11 is a 2-component epoxy resin used as a gelcoat mainly for manufacturing of all-purpose molds with good surface quality.  

  • Good spreading properties
  • Good mechanical properties
 

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Overview

PRODUCT BENEFITS

  • Good spreading properties
  • Good mechanical properties
 

Areas of Application

SikaBiresin® G32 GC11 is designed for manufacturing for all-purpose 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® GC11 (B)

Box with bottles12 x 0.05 kg

Bottle

0.5 kg

Canister9 kg
 

Product Details

Properties

Component A

SikaBiresin® G32

Component B

SikaBiresin® GC11

Chemical base

Epoxy resin, filled

Amine, unfilled

Color

 

mixed

Green

Amber

Green

Mixing ratio

by weight

100 : 8

Density

 

cured

1.7 kg/l

1.08 kg/l

1.6 kg/l

Viscosity (CQP029-4)

 

mixed

14 000 mPa·s

1400 mPa·s

13 000 mPa·s

Pot life (CQP021-4)

at 23 °C

36 minutes

Demolding time

24 hours

Shore D hardness (CQP023-1 / ISO 868)

91 A

Flexural strength (CQP027-2 / ISO 178)

85 MPa A

Flexural modulus (CQP027-2 / ISO 178)

7350 MPa A

Impact resistance (CQP038-2 / ISO 179)

10 kJ/m2 A

Compressive strength (CQP028-5 / ISO 604)

130 MPa A

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

69 °C A

Shelf life

18 months

24 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

Apply the gelcoat to the mold in a uniform thickness using a flat, short-haired brush. The material must be applied in a uniform direction to produce a homogeneous, gap-free surface layer.

 

A coupling layer or other backfill layer shall be applied as close as possible to the tacky phase to ensure proper adhesion and prevent bonding issues.
Further post curing of the demolded part can improve the final mechanical properties.
The duration of the post-curing process depends on the mass and thickness of the finished part.
Note: The post-curing requires a slow temperature increase and decrease process.
Depending on the geometry and weight of the part, it is recommended to use a counterpart (conformer) during post-curing.

STORAGE CONDITIONS

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