CREATING TOMORROW’S SOLUTIONS
NEW HORIZONS THROUGH
INNOVATIVE APPLICATIONS
WITH ELASTOSIL ® FILM
ULTRATHIN SILICONE FILM
FOR HIGH-PRECISION SOLUTIONS
A New Product Form for Silicone
Elastomers
ELASTOSIL® Film from WACKER is an
ultrathin, high-precision film of crosslinked
silicone rubber that is available in various
layer thicknesses from 20 µm to > 400 µm
and is manufactured under clean-room
conditions entirely without solvents. The
unique patent-registered manufacturing
process produces immaculate, highprecision silicone film with a defined
thickness that is impossible by other
production processes. The maximum
thickness variation across the film width
is ±5%. This precision, combined with
the proven properties of silicone rubber
opens up potential applications that were
hardly conceivable until now, and could
certainly not be realized on an industrial
scale.
ELASTOSIL® Film is especially impressive
for its durability. Its outstanding dielectric
properties, Young’s modulus and rebound
resilience remain constant over a wide
range of temperatures and frequencies,
as well as over millions of load cycles.
Moreover, ELASTOSIL® Film is chemically
inert and suitable for food contact. Like
all silicone elastomers, ELASTOSIL® Film
is characterized by selective permeability
for gases and water vapor.
Diverse Applications
ELASTOSIL® Film is ideal for use as
a dielectric precision layer in innovative,
future-oriented electronics applications:
so-called EAPs (electroactive polymers),
especially in:
•Actuator technology
(“artificial muscles”)
•Electricity generation
(“energy harvesting”)
•Smart sensors
With its typical silicone properties,
ELASTOSIL® Film can also be used in
food packaging, technical textiles and
an extremely wide variety of industrial
applications.
ELASTOSIL® and SILPURAN® are registered trademarks
of Wacker Chemie AG.
Properties of ELASTOSIL® Film
Selective gas-permeable
High-precision
(±5%)
Permanently elastic
ELASTOSIL®
Film
Good dielectric
properties
Heat-resistant and flexible
at low temperatures
High stretch recovery
For applications in the medical sector
and for wound dressing, ask about our
biocompatible SILPURAN® Film.
Form of Delivery and Processing
ELASTOSIL® Film
•Produced under cleanroom
conditions, currently on a pilot scale,
at a width of 250 mm
•Available as sheet or roll stock on a
support film, from which it can be easily
stripped off for further processing
•Can be processed by conventional
die-cutting or laser techniques
•Can be permanently and reliably
bonded using silicone adhesive.
Different grades are available for
different applications. Ask us, and we
will recommend one that is optimum
for your application.
ELASTOSIL® Film 2030 Product Data
Starting material
Addition-curing
silicone rubber
Layer thickness
20 µm – 400 µm
Shore A
27
(DIN ISO 7619-1)
Elongation at break
450%
(ISO 527-3)
Tear strength
10 N/mm
(ASTM D624 B)
Glass transition
-126 °C
temperature (Tg)
Operating range
-45 °C to 200 °C
Gas permeability
CO2/N2 10:1
(selectivity)
Water vapor
3,000 g/m2/24 h
at 20 µm
permeability
1,200 g/m²/24 h
(JIS 1099 A1)
at 50 μm
800 g/m²/24 h
at 100 μm
Compression set, 22 h,
5%
100 °C
(ISO 815-B)
2.8
Permittivity εr
Dielectric strength
80 – 100 V/µm
(VDE 0303)
Volume resistivity
1014 Ω·cm
(IEC 60093)
Yes
Suitable for
food contact
(BfR/FDA)1
1
BfR recommendation:
„XV. Silicones“ / FDA CFR 21 § 177.2600
„Rubber articles intended f. repeated use“
These figures are only intended as a guide and should
not be used in preparing specifications.
Heat Resistance of Various Elastomers
±1.0
Elongation at break [%]
Thickness variation [μm]
Surface Precision of a 20 μm Thick ELASTOSIL® Film
±0.8
±0.6
±0.4
±0.2
±0
±-0.2
800
700
600
500
400
300
200
±-0.4
100
±-0.6
0
±-0.8
0
20
40
60
80
100
120
±-1.0
700
750
800
850
900
950
1,000
1,050
1,100
EPDM
NR
NBR (34% ACN)
Film width [μm]
Thickness Precision
The ELASTOSIL® Film process produces films that are a fraction
of the thickness of a human hair with state-of-art film thickness
uniformity.
Stress-Strain Curve of ELASTOSIL® Film
20 μm, 3 Samples, 1.0 Hz, 10 Cycles
160
Stretch Recovery of ELASTOSIL® Film and PU Film after 24 h at
300% Elongation
2.0
400
1.8
350
1.6
300
1.4
250
1.2
200
1.0
150
0.8
100
0.6
50
0.4
0
0.2
0
0.2
0.4
0.6
0.8
1.0
1.2
Silicone
HNBR (39% ACN)
Elongation at Break
Silicones high elongation at break remains practically constant
over a wide temperature range.
[%]
Force [MPa]
140
Temperature [°C]
1.4
1.6
1.8
ELASTOSIL®
Film
(20 μm)
ELASTOSIL®
Film
(100 μm)
ELASTOSIL®
Film
(200 μm)
2.0
PU 1
(ester)
film
(25 μm)
PU 2
(ether)
film
(50 μm)
Elongation [mm/mm]
Sample 1
Sample 2
Sample 3
Elongation in the test Elasticity and Resilience
ELASTOSIL® Film is highly elastic – permanently.
Initial length
Stretch Recovery
Compared to other materials, silicone, and therefore
ELASTOSIL® Film, has excellent elastic recovery.
Gas Permeability (ELASTOSIL® Film 20 µm) ISO 15105-1
Water-Vapor Permeability of ELASTOSIL® Film
2,500
[g/m2/24 h]
Barrer
Permanent elongation
2,000
1,500
5,000
4,000
3,000
1,000
2,000
500
1,000
0
0
P/I (N2)
P/I (O2)
P/I (CO2)
Gas Permeability and Selectivity
ELASTOSIL® Film is water repellent but selectively permeable
to gases. This permeability is significantly higher than that of
other polymers.
20 μm
50 μm
100 μm
Water-Vapor Permeability
The water-vapor permeability of ELASTOSIL® film depends
on the layer thickness.
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The data presented in this medium are in accordance with the present state of our knowledge but do not absolve the user from carefully checking all supplies immediately on
receipt. We reserve the right to alter product constants within the scope of technical progress or new developments. The recommendations made in this medium should be
checked by preliminary trials because of conditions during processing over which we have no control, especially where other companies’ raw materials are also being used.
The information provided by us does not absolve the user from the obligation of investigating the possibility of infringement of third parties’ rights and, if necessary, clarifying
the position. Recommendations for use do not constitute a warranty, either express or implied, of the fitness or suitability of the product for a particular purpose.
7091e/09.16 reprint 7091e/04.16
Wacker Chemie AG
Hanns-Seidel-Platz 4
81737 München, Germany
Tel. +49 89 6279-1741
Infoline +49 8677 83-7979
[email protected]