SikaBiresin® RG53

Low pressure RIM system – simulation of PE / PP

SikaBiresin® RG53 is a very fast 2-component polyurethane low pressure RIM which can be used for a wide range of parts with different shapes and structures.
The Product must be processed with an adequate equipment.  

  • Simulation of PE / PP
  • Good flow behavior
  • High temperature resistance
  • Short demolding time
  • Cured parts can be machined
 
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Overview

PRODUCT BENEFITS

  • Simulation of PE / PP

  • Good flow behavior

  • High temperature resistance

  • Short demolding time

  • Cured parts can be machined

 

Areas of Application

SikaBiresin® RG53 is designed for manufacturing of housings, coverings and claddings for machines and electronic devices with medium stiffness. 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® RG53 beige (A)

Hobbock

20 kg

SikaBiresin® RG53 black (A)

Hobbock

20 kg

Drum200 kg

SikaBiresin® RG530 (B)

Bottle

0.975 kg

Canister

10 kg

20 kg

Drum200 kg
 

Product Details

Properties

Component A

SikaBiresin® RG53

Component B

SikaBiresin® RG530

Chemical base

Polyol

MDI-based isocyanate

Color

 

mixed

Beige, black

 Amber

Beige, black

Density

 

cured

1.03 kg/l

1.23 kg/l

1.2 kg/l

Mixing ratio

by weight

by volume

100 : 80

100 : 66

Viscosity (CQP029-4)

2200 mPa·s

175 mPa·s

Pot life (CQP021-4)

at 23 °C

60 seconds

Demolding time

10 minutes

Curing time

at 23 °C

1 day

Shore D hardness (CQP023-1 / ISO 868)

80 A

Tensile strength (CQP036-2 / ISO 527)

38 MPa A

Tensile elongation (CQP036-2 / ISO 527)

25 % A

Flexural strength (CQP027-2 / ISO 178)

58 MPa A

Flexural modulus (CQP027-2 / ISO 178)

1400 MPa A

Impact resistance (CQP038-2 / ISO 179)

90 kJ/m2 A

60 kJ/m2 B

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

60 °C A

110 °C B

Shelf life

12 months

CQP = Corporate Quality Procedure

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

B) 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® RG53 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.

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