SikaBiresin® RG56

Low pressure RIM system – simulation of PE / PP and ABS

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SikaBiresin® RG56 is a very fast 2-component polyurethane low pressure RIM system for manufacturing of housings, coverings and car tuning parts. The Product must be processed with an adequate equipment.  

  • Simulation of PE / PP and ABS
  • Good flow behavior
  • Short demolding time
  • High flexural and impact strength
  • Good heat resistance
 
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Overview

PRODUCT BENEFITS

  • Simulation of PE / PP and ABS
  • Good flow behavior
  • Short demolding time
  • High flexural and impact strength
  • Good heat resistance
 

Areas of Application

SikaBiresin® RG56 is designed for manufacturing of housings, coverings and claddings for machines and electronic devices.
Its good mechanical properties make it particularly suitable for components in vehicle construction and car tuning, such as spoilers, front and side skirts, and engine coverings.
Its good flow behavior is well suited for the production of thin-walled parts with complex shapes, such as ventilation ducts or grid-shaped radiator panels, and parts with integrated reinforcement elements.
This product is suitable for experienced professional users only.  

Packaging

  

SikaBiresin® RG56 beige (A)

IBC

1000 kg

SikaBiresin® RG56 grey, black (A)

Hobbock

20 kg

Drum200 kg

SikaBiresin® RG500 (B)

Canister

20 kg

Drum250 kg
 

Product Details

Properties

Component A

SikaBiresin® RG56

Component B

SikaBiresin® RG500

Chemical base

Polyol

MDI-based isocyanate

Color

 

mixed

Beige, grey, black

 Brown

Beige, grey, black

Density

 

cured

1.06 kg/l

1.23 kg/l

1.18 kg/l

Mixing ratio

by weight

100 : 80

Viscosity (CQP029-4)

2900 mPa·s

110 mPa·s

Pot life (CQP021-4)

at 23 °C

50 seconds

Demolding time

6 minutes A

Curing time

at 23 °C

1 day

Shore D hardness (CQP023-1 / ISO 868)

82 A, B

Tensile strength (CQP036-2 / ISO 527)

45 MPa A, B

Tensile elongation (CQP036-2 / ISO 527)

15 % A, B

Flexural strength (CQP027-2 / ISO 178)

67 MPa A, B

Flexural modulus (CQP027-2 / ISO 178)

1650 MPa A, B

Impact resistance (CQP038-2 / ISO 179)

60 kJ/m2 A, B

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

 

after post curing

100 °C A, B

125 °C C

Shelf life

12 months

CQP = Corporate Quality Procedure

A) 60 °C mold temperature

B) curing condition: after demolding 7 days at 23 °C

C) post curing: 4 hours at 80 °C + 2 hours at 120 °C

Application

Surface preparation

Surfaces must be clean, dry, and free from grease, oil and dust.
It is recommended to use wax-based release agents. For further information regarding Sika release agent consult the corresponding Product Data Sheet.

Application

The material and processing temperature shall be between 18 °C and 25 °C.
The mold temperature shall be between 20 °C and 60 °C. Increased mold temperature results in a shorter demolding time.
SikaBiresin® RG56 is processed using 2-component low-pressure equipment. These equipment must be specifically set up for processing the parts to be manufactured.

The mixing process is performed by dynamic or static-dynamic mixing units.

 

The mold temperature has a significant influence on the mechanical and thermal properties of the final part. In case of lower mold temperature those properties may be improved by a post curing process.
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.