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Product Data Sheet
Version 06 / 2010
Biresin® M73
Areas of Application
Product Benefits
Machine application of paste on substructures t
for production of contour shaped machinable t
blanks for design-, styling- or cubing models
Hard, low density material with high dimensional
stability
High temperature resistance and good
mechanical properties without post curing
Immediately after mixing mixture gets thixotropic
and hangs on vertical surfaces
Fine, dense surface, easy to varnish
Easily workable
Description
Basis
Resin
Hardener
Filler
Two-component-PUR-system
Biresin ® M73, polyol, brown, filled
Biresin ® M70, MDI-based isocyanate, reddish brown, unfilled
Biresin ® Spachtel braun or weiß, two-component-polyester-system, brown or white
Processing Data
Resin
Biresin M73
Individual components
Hardener
Biresin ® M70
®
Viscosity, 25°C
mPas
~ 13,000
~ 175
Density
g/cm³
0.75
1.23
Mixing ratio resin to hardener
in parts by weight
100
56
Mixture
Mixed viscosity , 25°C
after 10 - 15 sec pasty
Potlife, RT, after machine application
min
Setting time (workable)
h
15 - 20
>8
Physical Data (approx. values)
Biresin ® M73 resin
with hardener
Colour
Biresin ® M70
brown
Density
ISO 845
g/cm³
0.9
Shore hardness
ISO 868
-
D 70
E-Modulus
ISO 178
MPa
1,000
Flexural strength
ISO 178
MPa
32
Impact resistance
ISO 179
kJ/m²
8
Glass transition temperature, Tg
ISO EN 61006
°C
65
Biresin ® M73 1 / 2
Tooling & Composites
Model paste
"
