SikaBiresin® PX205

Vacuum casting polyurethane for prototypes and mock-ups

SikaBiresin® PX205 is a 2-component vacuum casting polyurethane system for manufacturing of prototypes and mock-ups.  

  • Very good mechanical strength
  • Quick hardening
  • Thermoplastic aspect
  • Easy processing
 
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Overview

PRODUCT BENEFITS

  • Very good mechanical strength

  • Quick hardening

  • Thermoplastic aspect

  • Easy processing

 

Areas of Application

SikaBiresin® PX205 is designed for manufacturing of transparent prototypes and mock-ups by vacuum casting with mechanical properties close to those of thermoplastics like polypropylene and HDPE by casting in silicone 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® PX205 (A)

Box with tins

6 x 1 kg

SikaBiresin® PX205 (B)

Box with bottles

6 x 0.5 kg

 

Product Details

Properties

SikaBiresin® PX205 (A)

SikaBiresin® PX205 (B)

Chemical base

Isocyanate

Polyol

Color

 

mixed

White

Amber

Beige

Density

 

cured

1.08 kg/l

1.08 kg/l

1.08 kg/l

Mixing ratio

by weight

100 : 50

Viscosity (CQP538-2 / BROOKFIELD LVT)

 

mixed

3000 mPa·s

150 mPa·s

1600 mPa·s

Pot life (CQP021-3 / Gel Timer TECAM)

150 g at 23 °C

12 minutes

Demolding time

60 minutes

Maximum casting thickness

5 mm

Shore D hardness (CQP023-1 / ISO 868)

70 A

Flexural modulus (CQP027-2 / ISO 178)

500 MPa A

Flexural strength (CQP027-2 / ISO 178)

30 MPa A

Tensile modulus (CQP036-2 / ISO 527)

530 MPa A

Tensile strength (CQP036-2 / ISO 527)

25 MPa A

Elongation at break (CQP036-2 / ISO 527)

100 % A

Linear shrinkage (CQP014-5)

3 x 50 x 250 mm

7 mm/m A

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

55 °C A

Glass transition temperature (CQP053-1 / ISO 11359)

90 °C A

Shelf life

12 months

CQP = Corporate Quality Procedure

A) curing condition: 80 °C for 16 hours

Application

METHOD OF APPLICATION

The material and processing temperature shall be between 18 °C and 25 °C. Temperature of a silicone mold shall be 70 °C.
The material can only be used in a vacuum casting machine.

Application

Immediately after mixing pour the Product into the preheated silicone mold. After casting, place the mold in a preheated oven (70 °C) for 60 minutes to cure.
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.

STORAGE CONDITIONS

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

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