JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 50

P.U.
lent fibre/matrix bond, which contributes to the outstanding mechanical and
dynamic properties of the polyurethane
composite. Generally, the cured polyurethane infusion resin exhibits outstanding
tensile, compressive and flexural strength,
as well as excellent compressive modulus
of elasticity and tensile modulus of elasticity in the direction of and perpendicular
to the fibre. For example, in tensile tests
perpendicular to the fibre, epoxy resin fails
far earlier because it is relatively brittle, and
tears.
By contrast, the polyurethane resin is more
flexible and does not exhibit the brittle
fractures commonly seen during tensile
tests of epoxy resin (see Figure 1). Consequently, no premature laminate damage is
seen in similar load situations. The excellent long-term dynamic fatigue strength
of the polyurethane resin deserves special
mention. In fatigue tests in the direction
of the fibre based on DIN 50100 (Wöhler
tests), it proved far stronger and therefore

more stable in the long term than standard
epoxy resin - even after over a million load
cycles (see Figure 2).

Even suitable for very
long rotor blades
The excellent mechanical properties of
the polyurethane system, its low heat
generation during curing and the fact that
it barely shrinks while solidifying make it
easier to produce thick-walled and large
components. This means that the polyurethane resin can also be used to produce
very long rotor blades with ease.
State-of-the-art facilities are already in
place for the solvent-free production of rotor blades made of polyurethane infusion
resin. In cooperation with Bayer MaterialScience, HÜBERS Verfahrenstechnik
Maschinenbau GmbH (Bocholt, Germany) has developed and tailored a manufacturing technology that enables controlled
and therefore constant mould filling. Highlights of the technology include extremely

Fig. 3: Windpower station

careful degassing of raw materials and a
precise metering and mixing technology
that enables continuous, bubble-free and
demand-based mixing of the polyurethane
raw material components isocyanate and
polyol. This way, the polyurethane reaction resin always delivers the same quality
during the infusion process. This results in
a filling process with fixed, reproducible
fill times. The filling speed and pressure
can also be controlled during the infusion
process. n
More information:
www. bayer.com

Rocky waters call
for steady performers.

In uncertain times, you can be certain Ashland is your best choice.
With Maxguard™ gelcoats and AME™ and Aropol™ resins, Ashland is pushing marine
technology and performance to new levels - and boat shops have taken notice! With a
combination of superior application properties, durability, repairability and enduring life
spans, Ashland's suite of gelcoats and resins offers unparalleled choices for builders. For more
information on how Ashland can help you craft the finest boats, visit ashland.com or email
PMeuropesales@ashland.com.

® Registered trademark, Ashland or its subsidiaries,
registered in various countries
™ Trademark, Ashland or its subsidiaries, registered in
various countries
© 2009-2011, Ashland
AD-10204.2

50 jec composites magazine / No84 October 2013

With good chemistry great things happen.™


http://www.bayer.com http://www.ashland.com

JEC COMPOSITES MAGAZINE - Issue #84 - October 2013

Table of Contents for the Digital Edition of JEC COMPOSITES MAGAZINE - Issue #84 - October 2013

Cover
Edito
Point of view: global player
Contents
Agenda of Events
COMPANY & BUSINESS In Brief
APPLICATIONS
Industrial
Security
Automotive
MARKET
Trends
Bio-based
Basalt
FEATURE MARINE
Simulation
High-performance
TPT
Natural fibre
Core materials
Hybrid composite
China
RESEARCH & DEVELOPMENT
Curing agent
Delamination
TECHNOLOGY & INNOVATIONS
P.U.
Services
VARTM
Metrology
Index
In the world
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - Cover
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 2
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - Edito
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - Point of view: global player
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 5
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - Contents
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 7
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - Agenda of Events
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 9
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - Ad1
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - Ad2
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - COMPANY & BUSINESS In Brief
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 11
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - Industrial
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 13
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - Security
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 15
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - Automotive
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 17
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - Trends
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 19
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - Bio-based
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 21
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - Basalt
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - Simulation
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 24
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 25
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - High-performance
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 27
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 28
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 29
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - TPT
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 31
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 32
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - Natural fibre
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 34
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 35
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - Core materials
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 37
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - Hybrid composite
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 39
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - China
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - Curing agent
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 42
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 43
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - Delamination
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 45
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 46
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 47
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - P.U.
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 49
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 50
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - Services
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 52
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 53
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - VARTM
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 55
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - Metrology
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - Index
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - In the world
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 59
JEC COMPOSITES MAGAZINE - Issue #84 - October 2013 - 60
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