SikaBiresin® F320

Unfilled fastcast resin for production of thin parts

SikaBiresin® F320 is an unfilled fast curing 2-component polyurethane system for manufacturing of prototype parts.  

  • Very quick setting product
  • User friendly mixing ratio
  • Low aggressiveness to silicone molds
  • Opaque even in small thickness
  • Good ability to be painted
  • Odorless
 

Overview

PRODUCT BENEFITS

  • Very quick setting product

  • User friendly mixing ratio

  • Low aggressiveness to silicone molds

  • Opaque even in small thickness

  • Good ability to be painted

  • Odorless

 

Areas of Application

SikaBiresin® F320 is designed for manufacturing of prototype parts and scale models. This product is suitable for experienced professional users only.  

Packaging

 

SikaBiresin® F320 (A)

Canister

4.5 kg

SikaBiresin® F320 (B)

Canister

4.5 kg

 

Product Details

Properties

SikaBiresin® F320 (A)

SikaBiresin® F320 (B)

Chemical base

Polyol, unfilled

MDI-based isocyanate, unfilled

Color

 

mixed

Off-white

Dark amber

Beige

Density

 

cured

0.98 kg/l

1.14 kg/l

1.10 kg/l

Mixing ratio

by weight

by volume

100 : 100

100 : 86

Viscosity (CQP029-4)

 

mixed

43 mPa·s

35 mPa·s

53 mPa·s

Pot life (CQP021-4)

150 g at 23 °C

2 minutes 10 seconds

Demolding time

2 mm thickness

20 minutes

Maximum casting thickness

5 mm

Shore D hardness (CQP023-1 / ISO 868)

74 A

Flexural strength (CQP027-2 / ISO 178)

36 MPa A

Flexural modulus (CQP027-2 / ISO 178)

1000 MPa A

Flexural strain at flexural strength (CQP027-2 / ISO 178)

7.2 % A

Impact resistance (CQP038-2 / ISO 179)

31 kJ/m2 A

Linear shrinkage (CQP014-5)

250 x 50 x 3 mm

0.4 mm/m A

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

90 °C B

Glass transition temperature TMA (CQP053-1 / ISO 11359)

103 °C B

Shelf life

12 months

CQP = Corporate Quality Procedure

A) curing condition: 23 °C for 7 days

B) post curing: 80 °C for 24 hours

Application

Surface preparation

The material, processing and mold or master-model 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 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.
Further post curing of the demolded part can improve the final mechanical properties.
Depending on the geometry and weight of the part, it is recommended to use a conformer while post curing.
With SikaBiresin® F320 it is recommended using SikaBiresin® SI125 (silicone) for molds.

STORAGE CONDITIONS

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